TW201114536A - Out-of-plane gusset weld joints and manufacturing method therefor - Google Patents

Out-of-plane gusset weld joints and manufacturing method therefor Download PDF

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TW201114536A
TW201114536A TW099127938A TW99127938A TW201114536A TW 201114536 A TW201114536 A TW 201114536A TW 099127938 A TW099127938 A TW 099127938A TW 99127938 A TW99127938 A TW 99127938A TW 201114536 A TW201114536 A TW 201114536A
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gusset
welded
notch
sheet
substrate
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TW099127938A
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Chinese (zh)
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TWI396600B (en
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Hiroshi Shimanuki
Teppei Okawa
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Nippon Steel Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/02—Seam welding; Backing means; Inserts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
    • B23K31/12—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to investigating the properties, e.g. the weldability, of materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D7/00—Modifying the physical properties of iron or steel by deformation
    • C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
    • C21D7/04—Modifying the physical properties of iron or steel by deformation by cold working of the surface

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Plasma & Fusion (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)

Abstract

A manufacturing method for an out-of-plane gusset weld joint including a base plate, a gusset plate protruding from a surface of the base plate, and a fillet weld portion, the method including: preparing a cutout portion by cutting an edge in a width direction of an end portion in a longitudinal direction of the gusset plate to the width direction; forming the fillet weld portion having a leg length d2' in a side of the gusset plate of 1/3 or more of a thickness t2 of the gusset plate and satisfying x'+d1'=d2'/sin θ ', where d2' is the leg length in the side of the gusset plate, d1' is a leg length in a side of the base plate, x' is a penetration length, and θ ' is a penetration angle, by disposing of the gusset plate on the surface of the base plate and performing a fillet welding of a provisional leg length d2 in a side of the gusset plate equal to or greater than a cutout height; and performing an impact treatment in a weld toe portion in a side of the base plate of at least boxing portion in the fillet weld portion to improve the fatigue characteristic.

Description

201114536 六、發明說明： 【發明所屬之技彳时領域】 發明領域 本發明係有關以填角熔接(fillet weld)將二個板構材加 以熔接而成的面外角板熔接接頭及其製作方法。尤其，係 有關具良好疲勞特性的面外角板熔接接頭及其製作方法。 本申請基於2009年8月24日於日本所申請之專利申請 案2009-193201號，主張優先權，並於此引用其内容。201114536 VI. Description of the Invention: [Technical Field of the Invention] Field of the Invention The present invention relates to an out-of-plane gusset welded joint in which two plate members are welded by fillet welding and a method of manufacturing the same. In particular, it relates to an out-of-plane gusset welded joint having good fatigue characteristics and a method of manufacturing the same. The present application claims priority based on Japanese Patent Application No. 2009-193201, filed on Jan. 24, 2009,,,,,

t 才支身椅]I 發明背景 為了加固（stiffen)構造體之板構材、或將該構造體之板 構材裝設到其他構材（例如其他板構材），而以從板構材之板 面突出作為附屬金屬材料的方式，於構造體之板構材填角 炼接、裝設其他板構材，而形成有面外角板熔接接頭。 眾知’當邊炼接接頭有重複應力（repeated stress)作用 時’由於例如有顯著的應力集中於熔接止端部、或有拉伸 殘留應力形成於熔接止端部，則從該熔接止端部會產生疲 勞龜裂，且疲勞特性會顯著下降。 作為其對策’習知，為了抑制熔接止端部的應力集中， 歷來，採取了如對炼接接頭的炼接止端部，施加研磨處理、 TIG炼修（dressing)處理、或裝飾推熔接（dec〇rative buikJupt 椅 chair]I BACKGROUND OF THE INVENTION In order to stiffen the structural member of the structural body, or to construct the structural member of the structural body to other members (for example, other plate members), The surface of the plate is protruded as an auxiliary metal material, and the plate member of the structure is angled and assembled, and other plate members are installed to form an outer gusset welded joint. It is known that 'when the side joint has a repeated stress effect', since for example, a significant stress concentrates on the welded end portion, or a tensile residual stress is formed at the welded end portion, the welded end is obtained from the welded end. Fatigue cracks occur in the department, and fatigue characteristics are significantly reduced. As a countermeasure, it is conventionally known to apply a polishing treatment, a TIG dressing process, or a decorative push weld to the refining end portion of the refining joint in order to suppress the stress concentration at the welded end portion. Dec〇rative buikJup

Welding)等，來增大止端部的曲率之方法。又，為了減低熔 接止&部的拉伸殘留應力，歷來，採取了如對熔接止端部 施加喷珠法(shotpeening)、鎚擊法(ha_erpeening)、雷射 201114536 衝擊法(laser peening)、或水喷流撞擊(water jet peening)等 衝擊處理（impact treatment)(鎚擊處理）或溶接後熱處理之 方法。 近年，有提出如實施已用超音波振動之衝擊處理（以下 有時亦記為UIT處理（Ultrasonic Impact Treatment:超音波衝 擊處理)）’將壓縮殘留應力導入熔接止端部、或改善熔接止 端部之形狀之方法。 例如，專利文獻1中，為了以壓縮殘留應力之導入，促 使提升材料的疲勞特性，而揭示有下述方法：對欲使改善 疲勞特性之方向，在直角方向的材料表面上形成依超音波 衝擊處理之複數條加工帶，並使於該加工帶之中形成3處以 上的邊緣至少與加工帶呈直角方向。又，專利文獻2中，為 了促使提升熔接部的疲勞強度，而揭示有下述方法：以超Welding), etc., to increase the curvature of the end portion. Further, in order to reduce the tensile residual stress of the fusion-sealing portion, it has been conventionally employed to apply a shotpeening method, a hammering method (ha_erpeening), a laser 201114536 impact method (laser peening), and the like. Or a method such as impact treatment (hammer treatment) or post-fusion heat treatment such as water jet peening. In recent years, it has been proposed to introduce an impact treatment of ultrasonic vibration (hereinafter sometimes referred to as UHT processing (Ultrasonic Impact Treatment)) to introduce a residual residual stress into a welded end portion or to improve a welded end. The method of the shape of the department. For example, in Patent Document 1, in order to promote the fatigue characteristics of the material by the introduction of the compressive residual stress, it is revealed that the ultrasonic wave impact is formed on the surface of the material in the direction perpendicular to the direction in which the fatigue characteristic is to be improved. Processing a plurality of processing belts, and forming at least three edges in the processing belt at least in a right angle direction with the processing belt. Further, in Patent Document 2, in order to promote the fatigue strength of the welded portion, the following method is disclosed:

曰波衝擊處理裝置，於熔接止端部的附近形成曲率半徑R 在2mm以上、且寬在lmm以上之溝，並以丨丨次/爪爪以上的 方法，來形成熔接止端部之每單位長度的衝擊密度。又， 專利文獻3中，揭示有利用超音波的衝擊處理裝置及衝擊處 理方法。 第7A圖〜第7D圖係顯示習知的面外角板熔接接頭之製 作順序的立體示意圖’乃顯示有面外角板熔接接頭⑻的端 部周邊熔接(boxing)部11〇附近的狀況。 將角板片1〇3填角炼接至基板1〇2(第圖〜第7B圖），而 於填角炫接部1G9形成麵接止端部 107 、 107,。 而且如第7C _〜第7D圖所示，於填角熔接部丄〇9當 4 201114536 中’對端部周邊熔接部uo的熔接止端部107施加衝擊處 理’而形成有衝擊處理痕111。而，第7A圖〜第7D圖乃顯示 有於基板102側的熔接止端部丨〇7施加有衝擊處理之狀態。 先行技術文獻 專利文獻 專利文獻1 :特開2006-167724號公報 專利文獻2 :特開2006-175512號公報 專利文獻3 .美國專利第6、171、415號公報 C ;务明内J 發明概要 發明欲解決之課題 如上述藉由對面外角板.熔接接頭的炼接止端部施加衝 擊處理，以將熔接止端部的形狀，製成應力難以集中且平 順的（曲線性)形狀，ϋ緩和、祕止端部及其附近的拉伸殘留 應力，而賦有壓縮殘留應力。其結果，可防止裂縫自熔接 止端部及其附近產生，而改善疲勞特性。以此種方法，可 大幅抑制來自炼接止端部之疲勞裂縫的產生所引發的疲勞 壽命之降低，㈣顯地提升疲㈣性，但在以⑽炼接的 面外角板雜接财’對疲勞特性之提升有其極限。 本發明人等為了可使面外角板炫接接頭之疲勞特性更 加提升，而對面外角祕接接頭之端部周歧接部之溶接 止端部’施加超音波衝擊處理，輕織㈣命加以檢討。 其結果發現，衫的疲㈣縫是從_根部發生而妨礙 到疲勞特性之改善。即，由於以魏接止端部之衝擊處理， 201114536 可抑制住來自熔接止端部的裂縫之發生，但熔接止端部的 下一個是從容易發生疲勞裂縫的熔接根部，發生及顯露疲 勞裂縫，而對面外角板之疲勞壽命造成影響。 對於來自此種填角熔接部的熔接根部之疲勞裂縫之發 生，很明顯地，只要將填角熔接的熔接部作成完全熔接滲 透的熔接部，便可去除熔接根部，而提升疲勞特性。但， 為了進行完全炼接渗透的溶接，‘必須實施廣㈣的溝槽 (groove)加工，而熔接作業上需要很長的時間，且在角板片a 的定位點熔接(tack welding)時難以環扣住角板片。因此， 炼接作業的負担極大，且會增加成本。 在本發明中，有鑑於上述狀況，以提供一種可在對熔 接止端部施加衝擊處理後使疲勞特性加以提升的面外角板 熔接接頭中，進一步使疲勞特性提升之熔接接頭及其製作 方法為目的。 用以欲解決課題之手段 本發明人等檢討了解除應力集中到熔接根部的一 效的方法。 第6A圖及第6B圖係說明重複應力起作用時，應力集中 到面外角板熔接接頭1之端部周邊熔接部丨〇的剖面示意 圖。如第6A圖所示，本發明人等藉由使熔接根部8的位置， 從第6B圖顯示之習知的位置c(角板片3之基板2側之長邊方 向端部）’往較該位置C更靠近角板片3内側的位置B移動， 來控制填角熔接之腿長(leg length)，而發現了可使疲勞特 性提升的效果。即，如第6A圖所示，以控制填角熔接之腿 201114536 長，緩和應力的分散途徑之陡度，並避免應力集中到熔接 根部8 ’而有效地使喉深(throat depth)增加。因而，可抑制 裂縫發生在熔接根部8及喉深部。於是，可充分發揮對熔接 止端部的衝擊處理之效果，而進一步使疲勞特性加以提 升。本發明人等經由上述檢討之結果，而完成了本發明。 即’本發明之要旨如下。 (1) 本發明之一態樣的面外角板熔接接頭之製作方法， 係具備基板、從該基板之表面突出的角板片、及填角熔接 部者。其係將前述角板片之長邊方向之端部的板寬方向之 一端，往板寬w之方向切開，形成一個具有缺口高度缺 口長度X、及小於80。以下之缺口角度0的缺口部；並以具 有前述缺口部之前述角板片之前述板寬W之方向之端面，與 别述基板之表面呈相對向的方式，來配置前述角板片，且 以使前述角板片側之預定腿長4大於前述缺口高度a以上 的方式，進行填角炼接，來形成前述填角溶接部；前述填 角熔接部係前述角板片側之腿長屯，大於前述角板片之板厚 t：2的1/3以上，且遠腿長a’、前述基板側之腿長山，' 溶接渗 透長度X’、及熔接滲透角度Θ，滿足乂’+山，>(12，/^116>，者；並 且，於前述填角熔接部當中，對至少端部周邊熔接部之前 述基板側的熔接止端部，施加可使疲勞特性改善的衝擊處 理。 (2) 上述（丨)之面外角板熔接接頭之製作方法中前述缺 口角度0為大於45。以上、小於75。以下亦可。 (3) 本發明之—態樣的面外角板熔接接頭，係具備基 201114536 板、從該基板之表面突出的角板月、及填角熔接部者，在 前述填角熔接部中，前述角板片側之腿長屯，大於前述角板 片之板厚tz的1/3以上，且該腿長山，、前述基板側之腿長 山’、熔接滲透長度X，'及熔接滲透角度0 ’滿足χ，+山，>d2，/sin 0 ，並且，於前述填角、熔接部當中，至少端部周邊溶接部 之前述基板側的熔接止端部，形成有衝擊處理痕跡。 (4)上述(3)之面外角板熔接接頭中，前述熔接滲透角度 0 ’為大於30°以上、小於75。以下亦可。 但，在角板片之長邊方向的剖面端部，炼接滲透長度X， 係從點C’到熔接根部8為止的長度，該點c’係從角板片側的 炫接止端部7’垂下至基板的垂線之垂足（f〇〇t 〇f ^ perpendicular)。熔接滲透角度0，係由線段7,8與線段8C，所 形成之角度。此外，缺口高度a係從基板之表面到角板片缺 口部之缺口位置A之高度。缺口長度X係從形成缺口部前的 角板片之基板側之長邊方向的端部角C，到形成缺口部後的 角板片之基板側之長邊方向的端部位置B為止的長度。缺口 角度0係由缺口部之線段AB與線段BC所形成之角度。 發明效果 與未於角板片設置缺口之熔接根部相比，將角板片之 長邊方向端面的基板側之角部予以切開，而於角板片設置 缺口部，並將該角板片加以填角熔接至基板所得的熔接接 頭中，熔接根部更可確實地往角板片之長邊方向大幅熔接 滲透，而增加喉深。此外，在該熔接接頭中，由於有對應 溶接根部位置來調整腿長，因此與以同長度將角板片側之 201114536 腿長及基板側之腿長加以填角炫接之情況相比，更可加深 喉深。 如此一來，與習知的熔接接頭相比，可將喉深增深大 約25%以上，因此如第6A圖所示，可缓和應力集中至端部 周邊熔接部，以防止來自熔接根部的疲勞破壞，而促使大 幅提申面外角板熔接接頭之端部周邊熔接部的疲勞強度。 圖式簡單說明 第1圖係示意性顯示本發明之—實施形態中，炫接後的 面外角板溶接接頭之第4B圖的A-A視局部剖面圖。 第2圖係示意性顯示本實施形態中，衝擊處理後的面外 角板熔接接頭之第4D圖的B-B視局部剖面圖。 第3圖係顯示本實施形態中，面外角板溶接接頭之其他 形態的局部剖面圖。 第4A圖係顯示本實施形態中面外角板溶接接頭之製作 順序的立體示意圖。 第4B圖係顯示本實施形態中面外角板溶接接頭之製作 順序的立體示意圖。 面外角板熔接接頭之製作 第4C圖係顯示本實施形態中 順序的立體示意圖。 第’係顯示本實施形態中面外角板炼接接頭 順序的立體示意圖。 氣作 第5圖係顯示本實施形態中面外角板炼接接 片之其他形態的立體示意圖。 板 第6A圖係說明在本實施形態中，重複應力起作用時， 201114536 應力集中至面外角板熔接接頭之端部周邊熔接部之狀況的 剖面不意圖。 第6B圖係說明重複應力起作用時，應力集中至面外角 板_ _ < %部周姐接部之狀況的剖 面示意圖。 $6C@U系說明重複應力起作用時，應力集中至面外角 板熔接接頭部周邊溶接部之狀況㈣面示意圖。 第7A®係_示習知的面外角板熔接接頭之製作順序的 立體示意圖。 第7B圖係、1員示習知的面外角板熔接接頭之製作順序的 立體示意圖。 第7C圖係顯示習知的面外角板熔接接頭之製作順序的 立體示意圖。 $ 7D® 示習知的面❹板溶接接頭之製作順序的 立體示意圖。 第8圖係_示喉深及喉深之位置的剖面示意圖。 【實施令式】 用以貫施發明之形•離 以下，將具體朗本發明。 第1圖係顯示在第4B圖之面外角板熔接接頭1的角板片 3之長邊方向的縱剖面〜_即第4B圖之A_A視剖面_的示意 圖’乃顯示有對熔接止端部7實施衝擊處理前之狀態。第2 圖係顯示第4D圖之B_B視剖面的示意圖，乃顯示有對熔接 止端部7施加衝擊處理而形成有衝擊處理痕後之狀態。 在本發明之一實施形態中，為了促使提升熔接接頭之 10 201114536 =二於角板片的角部設置缺D部，—夠大喉 ^ 應力對炫接根部之集令得以減少。即，如從第 中圖圖可知，喉深將會變大。而，唉深細z遍 ’乂 ：’’從填角炼接之剖面的根部(炫接根部8)到表面 面盘’為第8財的距^。因此，依贿接金屬表 I基材表面交接的炫接止端部7、7，之位置或炼接金屬 =接桃接根部8到炼接金屬表面為止之最短 ，9成聽接根部8舰接止端部7之距離、或熔 即，從炫接根部8到炼接 13(喉听之山.、之距離呈最小的溶接金屬5之表面上的點 致(。侯冰之I點），有時會與炫接止端部7或炫接止端部7,一 、▲ 2側之&接止端部7的位置係定義為點7,角 =側之繼端部7,的位置係定義為點7，，炫接根部8 立置係疋義為點8,而從角板片3側之溶接止端部7,往溶 ^前基板2之表面（線段78)垂下的垂線之垂足^義為點 C’。又，賴後接根部8與耽，之距離係定義為炼接渗 透長度x，(mm) ’賴7,8與線段吧_叙歧係定義為 炫接渗透_，〇，、_〇大小係定義絲板2側之腿 長M—，而線段rc’之大小係定義為角板片3側之腿長 CV—)。而，腿長係定義為從點c，到填角溶接之止雜接 止端部7、7，）為止之距離。如德诂及抑 ； 料’㈣叫贿接條件及 腿長等條件而設置有❹部，肖板〇，加轉_接至 201114536 基板2，而製造出如第1圖所示之熔接接頭1。對該熔接接頭 1之端部周邊熔接部10的熔接止端部7，施加超音波衝擊處 理後，以疲勞試驗調查出如第2圖所示之熔接接頭1的疲勞 特性。又’分別調查出基板2側之腿長山’(《1111)、角板片3側 之腿長cb (mm)、熔接滲透角度0，（。）、及熔接滲透長度 x’(mm)與疲勞特性之關係。而，端部周邊熔接部1〇係由以 端部周邊熔接而形成之熔接部，以及形成於角板片之長邊 方向端面之熔接部所形成。 其結果可知，在以於角板片3設置缺口部4、並進行熔 接所得之熔接接頭1中，較未於角板片設置缺口部的熔接接 頭相比，更可加深喉深，且具良好疲勞特性。但，當腿長 山’很小時，喉深部(熔接金屬5最薄的部分)之端點（在第8圖 之點13)可能會靠近最有可能從角板片3側發生疲勞裂縫之 基板2側之熔接止端部7。因此，從促使提升基板2側之熔接 止端部7的疲勞特性之觀點可知，不宜將腿長山，作得太小。 因而，在本實施形態中，係以熔接滲透長度X’及腿長 山，滿足下述式<：1>的方式，而規定有熔接後之基板2側的熔 接止端部7之位置、與最低限度的熔接滲透量。藉此，可避 免喉深部之端點13成為基板2側之熔接止端部7，而確保具 良好疲勞特性》 x’+di’>d27sin0 ’……<!> 又，熔接滲透長度X’及腿長山’亦可滿足下述式<1，>0 ，……<，> 而，由於往角板片3中之熔接滲透(熔融線6往角板片3 12 201114536 中之移動）變得愈深’炫接滲透角度θ，會變得愈小，因此在 確保喉殊之點上相當適宜。但，例如，在預先所需的溝槽 加工上費時費力、為了確保炫接滲透而變得必須有複數條 熔接路徑、或在熔接前的構材之環扣上費時費力，而使熔 接作業時間增長。因此，炼接渗透角度0，以35。〜6〇。為佳。 又，當熔接滲透角度6»，超過75。時，熔接滲透長度乂，會很 小，因此為了確保夠大的喉深而必須增加腿長七，，且多層 熔接(multilayer welding)等熔接作業相當費力。 本發明人等為進一步促使提升面外角板熔接接頭之疲 勞特性，而調查出在具備形成有缺口部之角板片之熔接接 頭之腿長的影響。即’以設置有缺口部的角板片，使角板 片側之熔接腿長’在角板片之板厚。的1/3倍到板厚。之 5/7倍之間作變化來進行填角熔接，而製作出熔接接頭。 而，以滿足<1>式的方式，使熔接滲透角度Θ，在3〇。〜75。之 間作變化，而使基板側之腿長山，大致呈恆定。對如此所製 作出的熔接接頭之端部周邊熔接部的熔接止端部，施加用 以改善疲勞特性的超音波衝擊處理後，以疲勞試驗，調查 出熔接接頭之疲勞特性。 其結果發現，在已用設置在缺口部之角板片的熔接接 頭中，一旦角板片側之腿長很小，則可能會有如第6C圖所 不，在喉深部有強烈的應力流動，而從角板片3側之熔接止 端部7’附近發生疲勞裂縫、或從熔接根部8發生疲勞裂縫， 而貫通熔接金屬5的情況發生。因此，從促使提升疲勞特性 之點可知，不宜將角板片側之腿長作得很小。故，再就角 13 201114536 板片側之腿長加以檢討後之結果可知，為了使流過溶接金 屬喉深部的應力降低，可藉由將角板片側之腿長d2’設在大 於角板片之板厚Ϊ2的1 /3以上，來大幅提升疲勞特性。 因此，在本實施形態中，角板片側之腿長d2,乃在大於 角板片之板厚t2的1/3以上。在本實施形態之面外角板熔接 接頭中，可藉由以角板片之板厚，來決定角板片側之腿長， 而緩和在喉深部的應力集中。因此，可有效地發揮衝擊處 理對熔接止端部7的疲勞特性之改善效果，而使熔接接頭之 疲勞特性大幅提升。而，在慮及角板片之尺寸下，則是將 腿長屯’設在小於角板片之板寬…以下。 在本實施形態之面外角板熔接接頭中，係如上述來規 定角板片側之腿長屯’與角板片之板厚。之關係，並且以 式而規定有熔接滲透長度x，、熔接滲透角度0，、基板側之 腿長山’、以及角板片側之腿長之間的關係。由該等關 係，可充分確保熔接部之喉深，並緩和在喉深部的應力集 中。此外，對端部周邊熔接部之熔接止端部，施加用以改 善疲勞特性的超音波衝擊處理，以使疲勞特性提升。再者， 為了使應力集中減低，可增大基板側之腿長山’、或可將熔 接止端部7之形狀預先製作呈滑順狀態。 以下，將說明本發明一實施形態之面外角板熔接接頭 之有效率的製作方法。 第4A圖〜第4D圖係示意性地說明本實施形態之面外角 板'熔接接頭之製作方法順序的局部立體圖。面外角板炫接 接頭1具備基板2(板厚ti(mm))及角板片3(板厚t2(mm))，該角 201114536 板片3係已填角溶接在基板2之表面上者。而，垂直於基⑽ ^面之方向（基板2之板厚【丨方向）與角板片3之板寬w方向 (问度方向）一致。又’與角板片3之板寬w方向及板厚h方向 呈正乂之方向’乃角板片3之長邊方向。包含與板厚t2(在該 長邊方向之端面者)呈同方向之邊(角隅)的部分，乃角板片3 之角部。 在本實施形態之面外角板溶接接頭巾，於矩形之角板 片形成有缺口部4’該缺口部4係其基板以則之角部（角隅部) 朝高度（板寬w)方向有切口者（第仏圖）。該缺口部4具有 a(mm)及x(_)之尺寸，前者係從與基板2呈相對向之角板 片3之角部’到角板片3之高度方向（角板片3之板寬^方向） 之尺寸，而後者係從與基板2呈相對向之角板片3之角部， 到角板片3之長邊方向(朝向角板片3之長邊方向之中心的 方向）之尺寸。 以具有缺口部4之角板片3的板寬w方向之端面與基板2 之表面呈相對向的方式’將角板片配置在基板2上。爾後， 將具有缺°部4的肖板W加以填㈣接於基板2。其結果是 於角板片3與基板2呈相對向之面的周圍（四邊附近），將形成 填角炼接部9’而於該填祕接部9#中，角板片3之長邊方 向的端#(第4Β圖所示之角板片3的右側端部）的周圍，將形 成端部周邊_部1()(第侧）。於如此卿成的填角溶接 部9當中’對至少端部周雜接部⑺之溶接止端部7、7，附 近’例如以超音波衝擊處理裝置12，施加使絲特性改善 的衝擊處理(第4C圖其結果，係將在炼接止端部7、Μ 15 201114536 成衝擊處理痕11(第4D圖）。 如第4A圖〜第4D圖所*，面外角板炼接接頭通常多具 有角板片之商度方向的長度（板寬w)大於板厚方向之長度 (板厚t2)以上之形狀(t2$w) ^即，係以板厚方向之端面與基 板之板面呈相對向的方式，配置角板片，並將該端面之周 圍（四邊）予以填角溶接至基板，而形成有如第4A圖〜第4D 圖所示之形狀的面外角板熔接接頭。因此，以下以如第4A 圖〜第4DSI所不之形狀的面外角板炼接接頭為例加以説明。 而’在本實施形態中’角板片之形狀並不限於以第4A 圖〜第4D圖所示之形狀(t2gw)。例如’角板片之形狀亦可 為如第5圖所不之形狀(t2>w)。即，亦可為角板片之高度方 向的長度(板寬w)小於板厚方向之長度(板厚t2)之形狀。 又，端部周邊熔接部係形成於具有缺口部之角板片之 角部（板厚方向之端面四角）。在此，為了簡便説明，以形成 於角板片之長邊方向端部的端部周邊熔接部為例加以説 明。 第1圖係顯示有在第4B圖之面外角板熔接接頭丨的角板 片3之長邊方向的縱剖面。即，第1圖係顯示第圖之a a 視剖面的示意圖，乃顯示出對熔接止端部7施加衝擊處理前 之狀態。第2圖係顯示第4d圖之B-B視剖面的示意圖，乃顯 不出形成有對溶接止端部7施加改善疲勞特性之衝擊處理 後的衝擊處理痕11之狀態。 如第1圖及第4B圖所示，角板片3之長邊方向之端部（形 成端部周邊熔接部10之端部）的角部當中’基板2側之角部 16 201114536 呈缺口，而形成有缺口部4。該缺口部4乃用以增大以炫接 金屬5所接合之面積、以充分確保喉深而形成者。 於第1圖中定義在填角炫接前之缺口部4之各點及各尺 寸。缺口前的四角形狀之角板片3的長邊方向之端部—基板 2側之角一係定義為角C。又’從角板片3側的基板2表面到 基板2的高度方向離有缺口高度a(mm)、且在角板片3之長邊 方向的端面位置，乃定義為位置A。即，在第1圖中的位置 A，係從角C到角板片3之寬w方向（基板2之高度方向）離有缺 口高度a(mm)之位置。此外，從角板片3之角C到角板片3之 内側（從角板片3之端部、朝向角板片3之長邊方向之中心的 方向）離有缺口長度x(mm)之位置，乃定義為位置B。而且， 從位置A往熔接前之基板2表面（線段78)垂下的垂線之垂 足，乃定義為點C”。該點C”與位置B之間的距離，乃定義 為表面上看起來的缺口長度X”。在第1圖中，以位置A、位 置B及角C所包圍之三角形的範圍，係往板厚方向呈缺口， 而形成有缺口部4。又，在第1圖中，缺口長度X與表面上看 起來的缺口長度乂”一致。 在此，在第1圖及第2圖中，角C與點C，一致。即，從缺 口位置A往溶接前之基板2表面（線段78)垂下的垂線之垂 足、與從角板片3側之止端部7’往熔接前之基板2表面（線段 78)垂下的垂線之垂足，乃以重疊的同一位置顯示。此時， 角板片3之長邊方向的端面，乃對與基板2之上面呈正交。 而，該兩者有時亦有未呈正交之關係。例如，在第3圖 中示意性顯示的熔接接頭之局部剖面圖中，缺口前的角板 17 201114536 片3之形狀與第1圖所示之形狀相異。如此一來，在如第3圖 所示之梯形的角板片的情況下，角C與點C’之位置將會相 異。又，第3圖中的缺口長度X，與第1圖中的缺口長度X相 較之下，會依照角C與點C”之間的距離而變長。以下，將以 第1圖之面外角板熔接接頭1的情況為例加以説明。又，在 扇形部的填角熔接的情況下，缺口長度X會依照角C與點C” 之間的距離而變短。 該缺口高度a(從位置A到角C為止之長度），必須以小於 熔接接頭1之角板片3側的預定腿長d2以下的方法而設定。 一旦缺口高度a超過預定腿長d2，則於角板片3側之端部周 邊熔接部，可能將殘留無法以熔接金屬5覆蓋的缺口部，而 無法取得健全的熔接部。又，缺口部4只要形成於角板片3 即可，因此對缺口高度a之下限並無特別規定。但，若缺口 高度a過小，則以熔接而接合之面積會變小，因而會使抑制 疲勞裂縫發生之效果降低。在一般以三條路徑以下熔接角 板片3的情況下，係以缺口高度a在角板片3側之預定腿長d2 的80〜90%為佳。 即，缺口高度a與預定腿長d2之關係必須滿足下述<2> 式，而以滿足下述<3>式為佳。 0<a^d2......<2> 0.8d2^a^0.9d2……<3> 又，缺口高度a與角板片3側之腿長d2’之關係，係滿足 下述<4>式。 d2，>a......<4> 18 201114536 預定腿長d,、4係作為填㈣接時之目標之腿長。 另一方面，如第1圖所示’將線段AB與線段BC所形成 之角度定義為缺口角度該缺D角度㈣減片3之缺口 部4的缺㈣、與㈣前之基板2表面所形成之角度(形成 缺口面之線段、與形成校垃於+ w , ^ 1之基板上面之線段所形成的 又、度0、缺口長度x、與缺口高度3之間的關係， 為了滿足下述少式’而從下述<6>式導出下述<7>式。、 a/x = tan 〇......<5〉 a= ......<6> xtan Θ ^d2......<7> 之尺H Γ以狀上述<7>式的方式―部4 之尺寸（缺口長度x及缺σ角度Θ)。但 〇 I + 古慮及第3圖之情 況，則表面上看^來的缺σ長度χ” 足下述<8>式。 /、缺4度Θ必須滿 x^tan Θ ^d2......<8> 缺口長度咖吨或表面上看起來的缺口長 滿足上述關係即可，並無特別規定。但，— .A E ,, ^ ’右缺口長度X變得 過長，則缺口角度0會變得過小。 ^ ^ 因此，會有以線段AB鱼 線咖所包圍之部分_:，在位置叫 狹 ⑽職時傳送.職線或炫接棒等_材=的= 況發生。此時，可能會產生熔接金屬無法充八、 B，而造成熔接金屬之填充不足或炫接渗== 的狀況發生。 疋寻熔接不良 又，一旦缺W變大，則缺D長度χ會變短、或缺 201114536 口部之表面積會變小。因此，缺口部4—將以熔接所接合之 面積予以增大而使發生於根部之應力減低—之效果將會變 因此，為了使以熔接所接合之面積增大，係在χ滿足上 述<1>式的範圍内，以不會產生熔接不良又可確保缺口面積 增大的方式，來選定缺口角度0與缺口長度X即可。 、 又，為了減少熔接止端部7之應力集中，腿長山，以盡可 月匕大的程度為佳。又’為使易於後續之超音波衝擊處理， 熔接止端部7及7’以盡可能可滑順熔接者為佳。 本發明人等準備形成有缺口部（以缺口高度a、缺口角 度Θ、及缺口長度\當中至少—個條件相異的方式而形 的各種角板片，以恆定的預定腿長七之填角炼接而製; 熔接接頭。對祕接接頭之端部周邊炼接部之溶接 進行超音波衝擊處理後，以疲勞試驗調查出疲勞特性1 結果證實，當缺口角度Θ在小於8〇。以下時，可確實接 接頭之疲勞特性加以提升。因此，缺口部之缺口角^ 小：。以下。而’缺口角度Θ之下限並無特別限制二缺 口角度Θ在大於45。以上時，基板與角板片之 ^ 口部之_)私足，因而可卿錄接料=缺 此時，可在較短時間内，有效又穩定地取得充妾根‘ 透。又，當缺口角度Θ在小於75。以下時，=炫接渗 ?度：：。此時，接接頭之疲勞特性有充:提Γ: 疋，缺口角度Θ以在45。以上、75。以下為 、 該缺口角度0在50。以上、7〇。以下。 平乂佳者，疋 201114536 如以上，與未形成缺口之情況相比，藉由將缺口部設 置在施有端邊㈣的角板片之長邊方向之端部、並加 以填角炫接’可使填角雜之雜根部遠離祕止端部， 而使喉深增加。其結果，可緩和时複應力之力之流動集 中至溶接根部’而⑽接接頭之絲特性加以提升(參考第 从圖）。為了避免如上述於填⑽接部產生賴渗透不足等 炫接不良的情況，通常’料保充分的料滲透並加以炫 接。在本實施形態中，亦是以於包含炼接根部之位置Β(參 考第上圖、及第2圖）的部分，不會產纽接滲透不足料接 不良的方式，確保充分的熔接滲透而加以熔接。 如前述’係以炫接滲透長度χ，與基板側之腿長士，滿足 上述 <卜式的方式’將腿長dl，、d2，與炼接參透角度0，列入 考量來進行⑽。其結果，可纽接後之基板側的炼接止 端部確保最低限度⑽接渗透量。於是，可職喉深的最 薄部分成為基板側的止端部，而確保良好的疲勞特性。 而’腿長山，、d2,相對於預定腿長山鳴，乃分別滿足 下述<9>及<10>式。 (1,^(1,......<9> d2，gd2......<10> 藉由如上述設置缺口部，可有效土也製作如滿足上述少 式之熔接接頭。 本發明人等為了如前述使面外角板嫁接接頭之疲勞特 性更加以提升，而以形成有缺口部之角板片，調查了在填 角熔接部之腿長山’及之影響。其結果發現，一旦角板片 21 201114536 側之腿長屯’很小，則相對於角板片之板厚。，喉深會變小， 因此在喉深部的應力會變高。此外並發現，藉由將角板片 側之腿長屯’設成大於角板片之板厚。的^以上，可使熔接 接頭之疲勞特性大幅提升。 因此，在本實施形態之熔接接頭之製作方法中，係以 角板片側之腿長屯，大於角板片之板厚12的1/3以上（下述 <11>式）的方式，來進行熔接。由於藉由控制角板片側之腿 長屯’與角板片之板厚t2之關係，可進一步確保充分的喉 深，因此可使熔接根部之發生應力降低，而使炫接接頭之 疲勞特性大幅提升。 d25^t2/3......<11> 而，在平時的熔接中，基板側之腿長山，與角板片側之 腿長屯’多呈大致同樣的長度。但，必須基板側之腿長…，滿 足上述<1>式，且角板片側之腿長屯，滿足上述<1；>式及上述 <11> 式。 如上述，在本實施形態之面外角板熔接接頭之製作方 法中，係以在角板片設置預定缺口部，使角板片側之腿長 毛’大於角板片之板厚tz的1/3以上、且滿足<ι>式的方式，來 取得充分的炼接渗透，進行填角炼接。 而’宜以角板片之缺口角度0在45。以上、75。以下的 範圍内，形成缺口部。又，宜以取得充分的熔接滲逯進〜 熔接之方式，來取得熔接滲透角0，在30。以上、75。以下矿 圍内的填角熔接部。 如此一來，可藉由在角板片設置缺口部，充分確保熔 22 201114536 接滲透來進行熔接’而使以熔接金屬所接合之各構材的剖 面積增加’而大為確保喉深。因而可使發生於熔接根部的 應力降低’並有效地使炫接接頭之疲勞特性大幅提升。 其次，在本實施形態之熔接接頭中，係於如上述所形 成之填角熔接部當中，對至少端部周邊熔接部之熔接止蠕 部，施加使熔接止端部本身之疲勞特性改善的衝擊處理。 該衝擊處理至少必須對在加有重複應力時’易發生疲 勞裂縫的端部周邊熔接部之基板側之熔接止端部實施。 但，亦可對端部周邊熔接部、或填角熔接部的所有熔接止 端部施加衝擊處理。 使疲勞特性改善的衝擊處理亦可為噴珠法、鎚擊法等 鎚擊處理。該衝擊處理方法並無特別限定。即，只要將熔 接止端部加以衝擊到無法判別出衝擊處王里前之熔接止端部 的止端線之位置的程度’而使滑順的谷部形成於溶接止端 部，以塑性流動(plastic flow)賦予壓縮殘留應力即可。 但’由於超音波衝擊處理裝置之衝擊處理(υιτ處理)相 當有效率’因此非常合適。祕接止端部的該聊衝擊處理 之條件並無特別限定。此時，以因應材料(構材)所需之疲勞 特性，進行適宜的UIT衝擊處理為佳。 以下，將舉例明示以超音波衝搫裝置❹㈣處理 (ΙΠΤ處理)的情況。衝擊處理中’宜在下述範圍内使超音波 衝擊痕⑽成：即，垂直麟接止端部之熔接線的剖面之 曲率半徑咖.0麵以上、iO.Omm以下，而從鋼材（基板或角 板片）表面往鋼材的厚度方向之深度如.〇5_以上、^瞧 23 201114536 以下。較佳者，是該深度£在〇 lmm以上、〇.4mm以下。 衝擊處理痕（超音波衝擊痕）11之曲率半徑r在大於 1.0mm以上時，可充分緩和應力集中至填角熔接部。又， 該曲率半徑r在10.〇mm以下時，隨著曲率半之增加，緩 和應力集中之效果亦會增加。此時，可進一步使熔接接頭 之而ί疲勞特性加以提升。可慮及處理時間來適宜地決定該 曲率半徑r。而，衝擊處理痕(超音波衝擊痕）11通常係以熔 接止端部7、7,為中心而形成。但，衝擊處理痕(超音波衝擊 痕）11宜以包含熔接金屬5及熔接熱影響部之至少一部分的 方式而形成。因此，宜以慮及促使衝擊處理痕11形成的位 置’來選定超音波衝擊位置、及超音波衝擊痕之曲率半徑r。 又’對基板2或角板片3的衝擊處理痕(超音波衝擊痕)ιι 之深度f在小於l.〇mm以下時，隨著該深度f之增加，解放炼 接止端部7附近的拉伸殘留應力之效果、或賦予壓縮殘留應 力之效果亦會增加。因此，可預期熔接接頭的耐疲勞特性 的大幅度提升。又，一旦增大深度f，則需要有充分的時間， 因此需慮及效率來決定深度f。於是，超音波衝擊痕丨丨之深 度f以在小於1.0mm以下為宜。而，超音波衝擊痕11之深度f 並無特別限制。以無法判別衝擊處理前之熔接止端部的止 端線之位置之量而言，超音波衝擊痕丨丨之深度邱彳如亦可在 0.05mm以上。 又’用以實施超音波衝擊處理的超音波衝擊裝置12， 例如，可使用前述專利文獻1〜3中所揭示之裝置。可在慮及 使形成的超音波衝擊痕11之形狀等條件的情況下，選定超 24 201114536 音波衝擊裝置12之振動端子（稍）的形狀。 例如’宜將超音波衝擊裝置12前端之軸方向剖面的曲 率半徑設在1.0mm以上、i〇mm以下。該前端形狀，將成為 衝擊處理後超音波衝擊痕n的形狀。因此，一旦該曲率半 徑過小，則於熔接止端部會形成缺口狀之溝，且應力集中 會變高。另一方面，一旦曲率半徑過大，則因熔接垾珠之 形狀，即便以衝擊處理衝擊熔接止端部，亦難以使預定曲 率半徑r的超音波衝擊痕丨丨形成。於是，為了確實形成預定 曲率半徑r的超音波衝擊痕，超音波衝擊裝置12前端之軸方 向剖面的曲率半徑在1 .Omm以上、l〇mm以下的範圍内為 佳。又，s玄曲率半徑在1.5mm以上、5.Omm以下較佳。 有關超音波衝擊處理之條件，亦只要依照用途所需之 疲勞特性來適當地選擇即可。因此，超音波衝擊處理之條 件並無特別限定。例如，宜以2〇kHz以上、5〇kHz以下的頻 率使振動端子振動，並以〇 〇lkw以上、4kw以下的功率 (power)實施超音波衝擊。但，由於未有須以超音波振動進 行衝擊之必要，因此亦可在#2〇kHz以下的低頻率 、或不連 續週期來進行衝擊。藉此，熔接止端部表面之金屬可塑性 流動，來解放伴隨填角熔接部之冷卻而形成之拉伸殘留應 力，而使壓縮之殘留應力場形成。又，藉由以加工所發生 之熱不會從炫接止端部表面逸散的絕熱狀態，來施加重複 超音波衝擊處理，可對熔接止端部附近施予如與熱鍛(h〇t forging)相同的仙。其結果，可麟接止端賴近之結晶 組織小型化’而改善熔接_之疲勞特性。 25 201114536 實施例 基板中，使用了 JIS G3106所記載之鋼種JIS SM490B的 鋼板(板厚14mmx寬50mmx長度500mm)。又，角板片中，使 用了與基板同鋼種的鋼板（板厚14mmx寬50mmx長度 100mm)。如第4A圖所示’將該角板片配置在基板上。即， 使角板片之長邊方向與基板2之長邊方向一致，並使角板片 之寬方向、與垂直於基板上面之方向一致。又，於基板之 長邊方向及寬方向之大致中央部（上面的中心部）配置有角 板片。 將如上述所配置之角板片填角熔接於基板，而製作出 面外角板炼接接頭的試驗體。而，於基板下面亦設置有與 基板上面的角板片相同的角板片（未圖示）。該下面之角板片 的位置，係與上面之角板片的位置相同的位置。製作2〇體 的面外角板炫接接頭之試驗體，並於該等2〇體當中，就其 中16體於角板片設置有缺口部。此外，於該等16體當中， 就其中2體’使用了與基板為同鋼種、且較其他μ體之角板 片板厚更厚的鋼板(板厚20mmx寬50mmx長度i〇〇mm)作為 角板片。又’如第7B圖所示，於角板片未形成缺口部之4 體的試驗體，係習知例的面外角板熔接接頭試驗體。 上述試驗體當中，就其中16體的試驗體，將角板片的 長邊方向兩端的基板側之角部切開一部分缺口，而形成了 缺口部4。此時，以滿足<2>式的方式決定缺口高度3與預定 腿長屯，並且使缺口角度Θ(基板表面與角板片之缺口面所 形成之角度)在25〜80°之間變化，而改變了缺口長度χ。 26 201114536 而，角板片側之預定腿長d2及基板側之預定腿長山係基 於熔接設計基準等而分別設定。 上述試驗體皆以作為熔接線而用有YGW-11(JIS Z332l :線徑l.4mm)之二氧化碳氣體半自動熔接(GMAW : 電壓35V、電流350A、速度3mm/sec、及氣體組成C02100%) 加以炼接。 又’角板片側之腿長d2,係在角板片之板厚t2的1/4以 上、3/4以下範圍内。又，基板側之腿長山，除了鳴的試驗 體以外，乃與角板片側之腿長4，呈大致同等長度。該等腿 長山’及屯’除了 1體的試驗體以外，分別大於基板側之預定 腿長山、及角板片側之預定腿長心以上。 對如此所製作之面外角板熔接接頭試驗體之端部周邊 熔接部之基板側的熔接止端部，以超音波衝擊處理裝置實 施UIT處理，而形成了衝擊處理痕。該超音波衝擊處理裝置 之振動端子（稍）前端之軸方向剖面的曲率半徑為 1.0〜10.0mm。又，UIT處理之條件為振動數：2πΗζ'功率： IkW。此外，在端部周邊熔接部之基板側的熔接止端部附 近’形成有曲率半枚r在1.〇〜i〇.〇mm、且表面深度f在小於 1.0mm以下的衝擊處理痕。而，為加以比較，而未對上述 20體之試驗體當中的2體施加UIT處理。 對最終所製作的所有面外角板炼接接頭之試驗體，施 加了疲勞試驗。在該疲勞試驗中，測試了在應力振幅 lOOMPa及應力比(U的條件下直至斷裂為止之重複次數。 又’疲勞试驗後，沿著長邊方向將角板片板厚的大約 27 201114536 中心部分予以切斷，而製作出用於剖面觀察之試料。以硝 太蝕劑（nital)腐蝕該試料（試驗體）的長邊方向兩端部的端部 周邊熔接部附近，而測定了熔接滲透長度(熔接金屬之侵入 長度)x’、腿長山’、腿長d2’、與喉深t。又，觀察了熔接止 端部之衝擊處理部的形狀。 其結果顯示於表1。 而，表1之腿長山’、腿長d2’、及喉深t，係形成有端部 周邊熔接部之各位置（四個地方）的平均値。即，對腿長山’、 腿長d2’、及喉深t，乃有慮及角板片之長邊方向兩端部之端 部周邊熔接部、及基板兩面之端部周邊熔接部。疲勞特性 (直至斷裂為止的重複次數)係各試驗體之値。 28 201114536In the chopper impact processing device, a groove having a radius of curvature R of 2 mm or more and a width of 1 mm or more is formed in the vicinity of the welded end portion, and each unit of the welded end portion is formed by a method of a stroke or more. The impact density of the length. Further, Patent Document 3 discloses an impact processing device and an impact processing method using ultrasonic waves. Figs. 7A to 7D are perspective views showing the order of fabrication of a conventional outer gusset welded joint. The same is shown in the vicinity of the end peripheral boxing portion 11 of the faceted gusset welded joint (8). The gusset sheet 1 〇 3 is resected to the substrate 1 〇 2 (Fig. 7B), and the fillet splicing portion 1G9 is formed with the surface end portions 107, 107. Further, as shown in Figs. 7C to 7D, the impact welding mark 111 is formed in the fillet welding portion 9 by applying an impact treatment to the welded end portion 107 of the end peripheral welded portion uo in 4 201114536. On the other hand, the seventh embodiment to the seventh drawing show a state in which the welding end portion 丨〇7 on the side of the substrate 102 is subjected to the impact treatment. CITATION LIST Patent Literature Patent Literature 1: JP-A-2006-167724, JP-A-2006-175512, JP-A No. 2006-175512, Japanese Patent No. 6, 171, 415, C. The problem to be solved is as follows: by applying an impact treatment to the refining end portion of the outer gusset and the welded joint, the shape of the welded end portion is made into a shape in which stress is difficult to concentrate and smooth (curve), and the relief is smoothed. The tensile residual stress at the end and its vicinity is secreted, and compressive residual stress is imparted. As a result, cracks can be prevented from occurring at the ends of the weld self-welding and the vicinity thereof, and the fatigue characteristics can be improved. In this way, the reduction in fatigue life caused by the generation of fatigue cracks from the end of the refining joint can be greatly suppressed, and (4) the fatigue (four) property is significantly improved, but in the outer surface of the (10) refining splicing The improvement of fatigue characteristics has its limits. In order to improve the fatigue characteristics of the surface slanting joint of the fascia, the inventors of the present invention applied ultrasonic shock treatment to the fused end portion of the end portion of the outer corner splicing joint, and the light woven (four) life was reviewed. . As a result, it was found that the fatigue (four) seam of the shirt occurred from the root portion and hindered the improvement of the fatigue characteristics. That is, due to the impact treatment of the end portion of the Wei, 201114536 can suppress the occurrence of cracks from the welded end portion, but the next portion of the welded end portion is from the root of the weld which is prone to fatigue cracks, and the occurrence of fatigue cracks occurs. And the impact on the fatigue life of the outer gusset. For the occurrence of fatigue cracks in the welded root portion of such a fillet welded portion, it is obvious that the welded portion can be removed by the welded portion of the fillet weld to completely weld the welded portion, thereby improving the fatigue characteristics. However, in order to perform the fusion of the complete refining and infiltration, it is necessary to carry out the wide (four) groove processing, and it takes a long time for the welding operation, and it is difficult to carry out the tack welding at the positioning point of the gusset sheet a. The ring buckles the gusset. Therefore, the burden of the refining operation is enormous and the cost is increased. In the present invention, in view of the above circumstances, in order to provide an outer surface gusset welded joint which can improve the fatigue characteristics after applying a shock treatment to the welded end portion, the welded joint which further improves the fatigue characteristics and the manufacturing method thereof are purpose. Means for Solving the Problem The inventors of the present invention have reviewed a method of relieving the stress concentration to the root of the fusion. Figs. 6A and 6B are schematic cross-sectional views showing the stress concentrated to the peripheral portion of the outer surface gusset welded joint 1 when the repeated stress acts. As shown in Fig. 6A, the present inventors have made the position of the welded root portion 8 from the conventional position c (the end portion in the longitudinal direction of the substrate 2 side of the gusset sheet 3) shown in Fig. 6B. The position C is moved closer to the position B inside the gusset sheet 3 to control the leg length of the fillet welding, and the effect of improving the fatigue characteristics is found. That is, as shown in Fig. 6A, by controlling the angle of the fillet of the fillet 201114536, the steepness of the dispersion path of the stress is alleviated, and stress is concentrated to the welded root portion 8' to effectively increase the throat depth. Therefore, it is possible to suppress the occurrence of cracks in the welded root portion 8 and the deep throat portion. Therefore, the effect of the impact treatment on the welded end portion can be sufficiently exerted, and the fatigue characteristics can be further improved. The present inventors completed the present invention based on the results of the above review. That is, the gist of the present invention is as follows. (1) A method of manufacturing an out-of-plane gusset welded joint according to an aspect of the present invention includes a substrate, a gusset sheet protruding from the surface of the substrate, and a fillet welded portion. One end of the end portion of the gusset sheet in the longitudinal direction of the gusset sheet is cut in the direction of the sheet width w to form a notched height gap length X and less than 80. In the following, the notch portion having the notch angle of 0; and the end plate in the direction of the plate width W of the gusset portion having the notch portion is disposed so as to face the surface of the substrate, and the gusset plate is disposed. The angle-filled joint is formed by corner-slurrying so that the predetermined leg length 4 on the gusset sheet side is greater than the gap height a, and the fillet-welded portion is the leg length of the gusset sheet side, which is larger than The thickness of the gusset sheet is t: 2 or more, and the long leg length a', the leg side of the substrate side is long, the 'solubility penetration length X', and the fusion penetration angle Θ satisfy the 乂'+ mountain, &gt Further, in the corner fillet portion, an impact treatment for improving the fatigue characteristics is applied to the welded end portion of the substrate side of at least the end peripheral welded portion. In the method of manufacturing the outer surface gusset welded joint of the above (丨), the notch angle 0 is greater than 45. The above-mentioned notch is less than 75. (3) The surface gusset welded joint of the present invention is provided. Base 201114536 board, protruding from the surface of the substrate In the gusset month and the fillet welding portion, in the fillet welding portion, the leg length on the gusset sheet side is larger than 1/3 of the plate thickness tz of the gusset sheet, and the leg is long. , the leg side of the substrate side, the weld penetration length X, 'and the weld penetration angle 0 ' satisfy χ, + mountain, > d2, / sin 0 , and at least the end periphery of the aforementioned fillet and weld portion (4) In the surface gusset welded joint of the above (3), the fusion penetration angle 0' is more than 30° or more and less than 75. However, at the end of the section in the longitudinal direction of the gusset sheet, the penetration penetration length X is the length from the point C' to the welded root portion 8, and the point c' is the splicing end from the gusset sheet side. The portion 7' hangs down to the vertical line of the substrate (f〇〇t 〇f ^ perpendicular). The fusion penetration angle 0 is formed by the angle formed by the line segments 7, 8 and the line segment 8C. Further, the notch height a is from the substrate. The height of the surface to the notch position A of the notch of the gusset sheet. The length of the notch X is formed from the gap The end angle C of the longitudinal direction of the substrate sheet on the front side of the gusset sheet is the length of the end portion position B in the longitudinal direction of the substrate side of the gusset sheet after the notch portion is formed. The angle formed by the line segment AB and the line segment BC. The effect of the invention is that the corner portion of the substrate side in the longitudinal direction end surface of the gusset sheet is cut away from the slanted root portion where the gusset sheet is not provided with the notch. The sheet is provided with a notch portion, and the gusset sheet is corner-welded to the fusion joint obtained by the substrate, and the welded root portion can be surely welded to the longitudinal direction of the gusset sheet to greatly penetrate and increase the throat depth. In the fusion splice, since the leg length is adjusted corresponding to the position of the root of the fusion, the throat depth can be deepened compared with the case where the leg length of the stencil sheet side of the 201114536 leg length and the leg length of the substrate side are spliced by the same length. In this way, the throat depth can be increased by about 25% or more as compared with the conventional fusion joint, so that as shown in FIG. 6A, stress concentration can be alleviated to the end peripheral welded portion to prevent fatigue from the welded root. Destruction, which promotes the fatigue strength of the welded portion around the end of the outer gusset welded joint. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a partial cross-sectional view, taken along the line A-A of Fig. 4B, showing the outer surface gusset fusion joint of the present invention in the embodiment. Fig. 2 is a partial cross-sectional view, taken along line B-B, of Fig. 4D of the face-to-face gusset welded joint after the impact treatment in the present embodiment. Fig. 3 is a partial cross-sectional view showing another embodiment of the faceted gusset-sealed joint in the embodiment. Fig. 4A is a perspective view showing the procedure for fabricating the faceted gusset-sealed joint in the present embodiment. Fig. 4B is a perspective view showing the procedure for fabricating the face-to-face gusset-sealed joint in the present embodiment. Production of the outer gusset welded joint Fig. 4C is a perspective view showing the sequence in the present embodiment. The figure is a schematic perspective view showing the procedure of the face gusset refining joint in the present embodiment. Fig. 5 is a perspective view showing another embodiment of the face gusset refining piece in the embodiment. Fig. 6A is a cross-sectional view showing the state in which the stress is concentrated to the welded portion around the end portion of the outer surface gusset welded joint in the case where the repeated stress acts in the present embodiment. Figure 6B shows that when the repeated stress acts, the stress concentrates to the out-of-plane corner plate _ _ < A schematic cross-sectional view of the condition of the % sister's joint. $6C@U is a schematic diagram showing the condition (4) of the state where the stress is concentrated to the peripherally welded portion of the outer joint of the frustum joint. The 7A® system is a perspective view showing the order of fabrication of the outer gusset welded joint of the prior art. Fig. 7B is a perspective view showing the production sequence of the outer surface gusset welded joint of the first member. Fig. 7C is a perspective view showing the fabrication sequence of a conventional out-of-plane gusset welded joint. $ 7D® Schematic diagram of the production sequence of the masked joints. Figure 8 is a schematic cross-sectional view showing the position of the throat and the depth of the throat. [Implementation Order] The form used to implement the invention. 1 is a longitudinal section of the gusset sheet 3 of the outer gusset welded joint 1 of FIG. 4B, which is a longitudinal section of the gusset 3 of FIG. 4B, which is a schematic view of the A_A cross section of FIG. 4B, which shows a pair of welded end portions. 7 The state before the impact treatment is implemented. Fig. 2 is a view showing a cross section taken along the line B_B of Fig. 4D, showing a state in which an impact treatment is applied to the welded end portion 7 to form an impact treatment mark. In an embodiment of the present invention, in order to promote the splicing of the welded joint 10 201114536 = the corner portion of the gusset sheet is provided with the missing portion D, the set of the large throat pressure to the dashed root portion is reduced. That is, as can be seen from the middle figure, the throat depth will become larger. However, the depth of the z z 乂 ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ Therefore, the position of the dazzling end portions 7, 7 of the surface of the base material of the metal table I is bribed, and the position of the refining metal = the root of the peach to the root of the metal to the metal surface of the metallurgy is the shortest. The distance from the end portion 7 or the melting point is from the dazzling root portion 8 to the refining joint 13 (the distance between the throat and the mountain is the smallest point on the surface of the molten metal 5 (I point of Hou Bing) The position of the end portion 7 of the splicing end portion 7 or the splicing end portion 7 and the ▲ 2 side is defined as the position of the point 7 and the angle = the side end portion 7 of the side. Defined as point 7, the dazzling root 8 is positioned as the point 8, and the vertical line from the splicing end 7 of the gusset 3 side to the surface of the front substrate 2 (line 78) The foot ^ meaning is the point C'. In addition, the root is connected to the root 8 and the 耽, the distance is defined as the refining penetration length x, (mm) 'Lai 7,8 and the line segment _ 〗 〖Syntax is defined as splicing penetration _ The size of the 〇, 〇 〇 defines the leg length M of the silk plate 2 side, and the size of the line segment rc ' is defined as the leg length CV of the gusset 3 side. Further, the leg length is defined as the distance from the point c to the miscellaneous end portions 7, 7 of the fillet. Such as Germany and Germany; material '(4) called bribe conditions and leg length and other conditions are set up with a crotch, Xiao Banyu, add _ to 201114536 substrate 2, and manufacture the fusion joint 1 as shown in Figure 1 . After the ultrasonic shock treatment was applied to the welded end portion 7 of the welded portion 10 around the end portion of the welded joint 1, the fatigue characteristics of the welded joint 1 as shown in Fig. 2 were investigated by a fatigue test. 'Investigate separately the leg of Changshan on the side of the substrate 2' ("1111", leg length cb (mm) on the side of the gusset sheet 3, weld penetration angle 0, (.), and weld penetration length x' (mm) and fatigue The relationship of characteristics. Further, the end peripheral welded portion 1 is formed by a welded portion formed by welding the end portion and a welded portion formed on the end surface of the gusset sheet in the longitudinal direction. As a result, it is understood that the welded joint 1 in which the notch portion 4 is provided in the gusset sheet 3 and welded is provided, and the throat depth can be deeper than that of the welded joint in which the notch portion is not provided in the gusset sheet, and is good. Fatigue properties. However, when the leg is long, the end of the throat (the thinnest part of the welded metal 5) (at point 13 in Figure 8) may be close to the substrate 2 which is most likely to have fatigue cracks from the gusset 3 side. The side of the fusion end portion 7. Therefore, from the viewpoint of promoting the fatigue characteristics of the welded end portion 7 on the side of the substrate 2, it is not preferable to make the leg length mountain too small. Therefore, in the present embodiment, the fusion penetration length X' and the leg length are satisfied, and the following formula is satisfied. In the manner of <:1>, the position of the fusion end portion 7 on the side of the substrate 2 after welding and the minimum amount of fusion penetration are defined. Thereby, it is possible to prevent the end point 13 of the deep throat portion from becoming the welded end portion 7 on the substrate 2 side, and ensuring good fatigue characteristics x'+di'>d27sin0'... <!> In addition, the fusion penetration length X' and the leg length mountain ' can also satisfy the following formula <1,>0 ,... <,> However, since the penetration penetration in the gusset sheet 3 (the movement of the molten wire 6 into the gusset sheet 3 12 201114536) becomes darker, the oscillating penetration angle θ becomes smaller, so It is quite suitable at the point of ensuring the throat. However, for example, it takes time and labor in the groove processing required in advance, and it is necessary to have a plurality of welding paths in order to ensure the penetration of the splicing, or it takes time and effort on the buckle of the material before welding, and the welding operation time is made. increase. Therefore, the refining penetration angle is 0, to 35. ~6〇. It is better. Also, when the penetration angle is 6», it exceeds 75. At the time of fusion, the penetration length 乂 is small, so the leg length must be increased in order to secure a large throat depth, and the welding operation such as multilayer welding is laborious. The inventors of the present invention investigated the influence of the leg length of the welded joint having the gusset sheet having the notched portion in order to further promote the fatigue characteristics of the gusset welded joint of the outer surface. That is, the gusset sheet provided with the notched portion has a thickness of the gusset sheet on the side of the gusset sheet. 1/3 times the thickness of the board. A 5/7 times change is made to fill the corners to make a welded joint. And to meet In the manner of <1>, the fusion penetration angle Θ is 3 〇. ~75. The change between the two sides makes the leg on the side of the substrate long and substantially constant. After the ultrasonic shock treatment for improving the fatigue characteristics was applied to the welded end portion of the end portion welded portion of the welded joint thus produced, the fatigue characteristics of the welded joint were investigated by a fatigue test. As a result, it has been found that in the welded joint in which the gusset plate provided in the notch portion is used, once the leg length on the gusset sheet side is small, there may be a strong stress flow in the deep throat portion as in Fig. 6C. Fatigue cracks occur in the vicinity of the welded end portion 7' of the gusset sheet 3 side, or fatigue cracks occur from the welded root portion 8, and the molten metal 5 is passed through. Therefore, from the point of promoting the improvement of the fatigue characteristics, it is not preferable to make the leg length on the side of the gusset sheet small. Therefore, after reviewing the leg length on the side of the corner 13 201114536, it can be seen that in order to reduce the stress flowing through the deep portion of the molten metal throat, the leg length d2' on the gusset sheet side can be set larger than the gusset sheet. The thickness of the plate is 1/2 or more, which greatly improves the fatigue characteristics. Therefore, in the present embodiment, the leg length d2 on the gusset sheet side is larger than 1/3 or more of the sheet thickness t2 of the gusset sheet. In the face gusset welded joint of the present embodiment, the leg length on the gusset sheet side can be determined by the thickness of the gusset sheet, and the stress concentration in the deep throat portion can be alleviated. Therefore, the effect of improving the fatigue characteristics of the welded end portion 7 by the impact treatment can be effectively exerted, and the fatigue characteristics of the welded joint can be greatly improved. However, considering the size of the gusset, the leg length 屯 is set to be smaller than the width of the gusset sheet. In the face gusset welded joint of the present embodiment, the leg length 屯' of the gusset sheet side and the gusset sheet are defined as described above. The relationship between the welding penetration length x, the fusion penetration angle 0, the leg length of the substrate side, and the leg length of the gusset sheet side is defined by the formula. From these relationships, the throat depth of the welded portion can be sufficiently ensured and the stress concentration in the deep throat can be alleviated. Further, ultrasonic welding treatment for improving the fatigue characteristics is applied to the welded end portion of the end peripheral welded portion to improve the fatigue characteristics. Further, in order to reduce the stress concentration, the leg length of the substrate side can be increased, or the shape of the fusion end portion 7 can be made into a smooth state in advance. Hereinafter, an efficient method of producing the face gusset welded joint according to the embodiment of the present invention will be described. 4A to 4D are partial perspective views schematically showing the procedure of the method of manufacturing the outer surface gusset 'weld joint of the embodiment. The outer gusset splicing joint 1 includes a substrate 2 (thickness ti (mm)) and a gusset sheet 3 (thickness t2 (mm)), and the corner 201114536 slab 3 is filled with a fillet on the surface of the substrate 2 . Further, the direction perpendicular to the base (10) surface (the thickness of the substrate 2 [丨 direction] coincides with the plate width w direction (question direction) of the gusset sheet 3. Further, the direction w and the thickness h direction of the gusset sheet 3 are the direction of the positive direction, which is the longitudinal direction of the gusset sheet 3. The portion including the side (corner 呈) in the same direction as the plate thickness t2 (the end face in the longitudinal direction) is the corner portion of the gusset plate 3. In the outer corner plate of the present embodiment, the joint towel is formed, and the rectangular corner plate is formed with a notch portion 4'. The notch portion 4 has a corner portion (corner portion) of the substrate, and has a height (plate width w) direction. Incisor (Figure )). The notch portion 4 has dimensions of a (mm) and x (-), and the former is from the corner portion of the gusset plate 3 opposite to the substrate 2 to the height direction of the gusset plate 3 (the plate of the gusset plate 3) The width of the width direction, and the latter is from the corner of the gusset sheet 3 opposite to the substrate 2 to the longitudinal direction of the gusset sheet 3 (the direction toward the center of the longitudinal direction of the gusset sheet 3) The size. The gusset sheet is placed on the substrate 2 such that the end surface of the corner sheet 3 having the notch portion 4 in the plate width w direction faces the surface of the substrate 2. Thereafter, the slab W having the missing portion 4 is filled (four) to the substrate 2. As a result, the gusset sheet 3 and the substrate 2 are in the vicinity of the facing surface (near the four sides), and the corner-filling portion 9' is formed, and in the filling portion 9#, the long side of the gusset sheet 3 is formed. Around the end # of the direction (the right end of the gusset 3 shown in Fig. 4), the end portion _ portion 1 () (the side) is formed. In the corner fillet portion 9 thus formed, the impact treatment of the at least the end portion of the end of the miscellaneous portion (7) is applied to the vicinity of the end portion, for example, by the ultrasonic shock treatment device 12, and the impact resistance is improved. The result of Fig. 4C is that the impact processing mark 11 (Fig. 4D) is formed at the end portion 7 of the refining end, and the Μ 15 201114536. As shown in Fig. 4A to Fig. 4D, the outer gusset refining joint usually has many The length of the directional plate (the plate width w) is larger than the length of the plate thickness direction (thickness t2) (t2$w) ^that is, the end face in the thickness direction is opposite to the plate surface of the substrate In the manner of aligning, the gusset sheet is disposed, and the periphery (four sides) of the end surface is angularly fused to the substrate to form an outer gusset welded joint having a shape as shown in FIGS. 4A to 4D. Therefore, the following The outer gusset splicing joint of the shape of the 4th to 4th DSI is described as an example. In the present embodiment, the shape of the gusset sheet is not limited to the one shown in Figs. 4A to 4D. The shape (t2gw). For example, the shape of the gusset sheet may be a shape as shown in Fig. 5 (t2 > w). The length in the height direction of the gusset sheet (plate width w) may be smaller than the length in the thickness direction (thickness t2). Further, the end peripheral welded portion is formed at a corner portion of the gusset sheet having the notch portion ( Here, for the sake of brevity, the end peripheral welded portion formed at the end portion in the longitudinal direction of the gusset sheet will be described as an example. Fig. 1 shows the surface of Fig. 4B. The longitudinal section of the gusset sheet 3 of the outer gusset welded joint 之 in the longitudinal direction. That is, the first drawing shows a schematic view of the aa cross section of the drawing, and shows a state before the impact treatment is applied to the welded end portion 7. Fig. 2 is a schematic view showing a BB cross section of Fig. 4d, showing a state in which the impact treatment trace 11 after the impact treatment for applying the fatigue resistance to the melted end portion 7 is formed. Figs. 1 and 4B. As shown in the figure, the corner portion 16 201114536 on the side of the substrate 2 is notched in the corner portion of the end portion of the gusset sheet 3 in the longitudinal direction (the end portion forming the end peripheral welded portion 10), and the notch portion 4 is formed. The notch portion 4 is for increasing the area to be joined by the dazzling metal 5 to charge In the first figure, each point and each dimension of the notch portion 4 before the fillet is spliced is defined in Fig. 1. The end portion of the corner plate 3 of the square shape of the square shape before the notch-substrate The angle of the two sides is defined as the angle C. Further, 'the end surface of the substrate 2 from the gusset sheet 3 side to the height direction of the substrate 2 is notched with a notch height a (mm) and the end face in the longitudinal direction of the gusset sheet 3 The position is defined as the position A. That is, the position A in Fig. 1 is a position from the corner C to the width w direction of the gusset sheet 3 (the height direction of the substrate 2) from the notch height a (mm). Further, from the corner C of the gusset sheet 3 to the inner side of the gusset sheet 3 (the direction from the end of the gusset sheet 3 toward the center of the longitudinal direction of the gusset sheet 3), there is a notch length x (mm). The position is defined as position B. Further, the vertical line of the perpendicular line hanging from the position A to the surface (the line segment 78) of the substrate 2 before welding is defined as a point C". The distance between the point C" and the position B is defined as a surface appearance. In the first figure, the range of the triangle surrounded by the position A, the position B, and the angle C is notched in the thickness direction, and the notch portion 4 is formed. Further, in Fig. 1, The length X of the notch coincides with the length of the notch 看起来 on the surface. Here, in the first and second figures, the angle C coincides with the point C. That is, the vertical line of the perpendicular line which hangs from the notch position A to the surface (the line segment 78) of the substrate 2 before the splicing, and the surface of the substrate 2 (the line segment 78) before the splicing from the gusset 3 side end portion 7' The vertical line of the vertical line is displayed in the same position overlapping. At this time, the end faces in the longitudinal direction of the gusset sheet 3 are orthogonal to the upper surface of the substrate 2. However, the two are sometimes not orthogonal. For example, in a partial cross-sectional view of the welded joint schematically shown in Fig. 3, the shape of the gusset 17 201114536 sheet 3 before the notch is different from the shape shown in Fig. 1. As a result, in the case of a trapezoidal gusset as shown in Fig. 3, the positions of the angle C and the point C' will be different. Further, the notch length X in Fig. 3 is longer in accordance with the distance between the angle C and the point C" as compared with the notch length X in Fig. 1. Hereinafter, the surface of Fig. 1 will be used. The case of the outer gusset welding joint 1 will be described as an example. Further, in the case of the fillet welding of the scallop portion, the notch length X becomes shorter in accordance with the distance between the angle C and the point C". The notch height a (the length from the position A to the angle C) must be set to be smaller than the predetermined leg length d2 of the corner piece 3 side of the fusion splice 1 or less. When the notch height a exceeds the predetermined leg length d2, the end portion of the gusset sheet 3 side is welded to the end portion, and the notch portion which cannot be covered with the weld metal 5 may remain, and a stable welded portion cannot be obtained. Further, the notch portion 4 is only required to be formed on the gusset sheet 3, and therefore the lower limit of the notch height a is not particularly limited. However, if the notch height a is too small, the area to be joined by welding is reduced, so that the effect of suppressing the occurrence of fatigue cracks is lowered. In the case where the corner sheet 3 is generally welded by three paths or less, it is preferable that the notch height a is 80 to 90% of the predetermined leg length d2 on the gusset sheet 3 side. That is, the relationship between the notch height a and the predetermined leg length d2 must satisfy the following <2>, to satisfy the following The <3> formula is preferred. 0 <a^d2...... <2> 0.8d2^a^0.9d2...... <3> Further, the relationship between the notch height a and the leg length d2' on the gusset sheet 3 side satisfies the following <4> formula. D2,>a... <4> 18 201114536 The leg length d, and the 4 series are predetermined as the leg length of the target when filling (four). On the other hand, as shown in Fig. 1, the angle formed by the line segment AB and the line segment BC is defined as the notch angle of the missing D angle (4) the defect of the notch portion 4 of the negative film 3 (four), and the surface of the substrate 2 before the (four) The angle (the relationship between the line segment forming the notch surface and the line segment formed on the substrate above the surface of + w , ^ 1 , the degree 0, the length of the notch x, and the height 3 of the notch, in order to satisfy the following 'from the following <6> formula derives the following <7> , a/x = tan 〇... <5> a= ...... <6> xtan Θ ^d2...... <7><7> The mode of the portion - the size of the portion 4 (the notch length x and the missing σ angle Θ). However, 〇 I + ancient considerations and the situation of the third figure, on the surface, the length of the missing σ is χ" <8> /, lack of 4 degrees, must be full x^tan Θ ^d2...... <8> The length of the notch or the length of the notch on the surface is sufficient to satisfy the above relationship, and there is no particular regulation. However, if the .A E , , ^ ′ right notch length X becomes too long, the notch angle 0 becomes too small. ^ ^ Therefore, there will be a part of the line surrounded by the line AB fish line _:, in the position called the narrow (10) job transfer. Line or dazzle bar, etc. At this time, there may be a situation in which the welded metal cannot be filled with eight or B, and the filling of the welded metal is insufficient or the smear is swelled ==.疋 Looking for poor welding. Once the W is large, the length of the missing D will become shorter or shorter. The surface area of the mouth will become smaller. Therefore, the effect of the notch portion 4 - the area to be joined by the welding is increased and the stress occurring in the root portion is reduced - therefore, in order to increase the area joined by the welding, the χ is satisfied In the range of the <1> formula, the notch angle 0 and the notch length X may be selected so as not to cause welding failure and to ensure an increase in the notch area. Further, in order to reduce the stress concentration of the welded end portion 7, the leg length is preferably as large as possible. Further, in order to facilitate the subsequent ultrasonic shock treatment, it is preferable that the welded end portions 7 and 7' are welded as smoothly as possible. The inventors of the present invention are prepared to form various gussets having a notch portion (at least one of the notch height a, the notch angle Θ, and the notch length\), with a constant predetermined leg length of seven fillets. After welding and welding, the fatigue characteristics of the welded joints around the end of the joint are ultrasonically investigated. The results show that when the notch angle Θ is less than 8〇. The fatigue characteristics of the joint can be improved. Therefore, the notch angle of the notch is small: below. The lower limit of the notch angle 并无 is not particularly limited. When the angle is greater than 45, the substrate and the gusset The mouth of the film _) private, so you can record the material = lack of this time, in a relatively short period of time, effectively and stably obtain the roots. Also, when the notch angle Θ is less than 75. When the following, = dazzle penetration degree::. At this point, the fatigue characteristics of the joint are filled: Lifting: 疋, the notch angle is at 45. Above, 75. The following is , the gap angle 0 is 50. Above, 7〇. the following. As for the above, compared with the case where no notch is formed, the notch is provided at the end of the longitudinal direction of the gusset plate to which the end edge (4) is applied, and the corner is spliced. The roots of the fillet can be moved away from the end of the secret, and the depth of the throat is increased. As a result, the flow of the force of the complex stress can be moderated to the root of the fusion and the characteristics of the wire of the (10) joint can be improved (refer to the figure). In order to avoid the occurrence of poor splicing such as insufficient penetration in the filling portion (10), it is generally required to allow sufficient material to penetrate and splicing. In the present embodiment, the portion including the position of the root of the refining (refer to the top view and the second drawing) is not in a manner that the joint is insufficiently penetrated, and sufficient weld penetration is ensured. Spliced. As described above, the length of the penetration is 炫, and the length of the leg on the substrate side is satisfied. The <type of the method' takes the leg lengths dl, d2, and the refining penetration angle of 0 into consideration (10). As a result, it is possible to ensure the minimum (10) penetration amount at the end of the refining end on the substrate side after the bonding. Thus, the thinnest portion of the serviceable throat becomes the end portion on the substrate side, ensuring good fatigue characteristics. And the 'legged mountain, d2, relative to the predetermined leg length, is the following, respectively. <9> and <10> formula. (1,^(1,... <9> d2, gd2... <10> By providing the notch portion as described above, it is possible to efficiently produce a welded joint which satisfies the above-described less type. In order to improve the fatigue characteristics of the face-to-face gusset graft joint as described above, the present inventors investigated the influence of the leg-length mountain in the fillet-welded portion with the gusset sheet in which the notch portion was formed. As a result, it was found that once the leg length 屯' of the gusset sheet 21 201114536 side is small, it is thicker than the gusset sheet. The throat depth will become smaller, so the stress in the deep part of the throat will become higher. Further, it has been found that the leg length of the gusset sheet is set to be larger than the thickness of the gusset sheet. Above ^, the fatigue characteristics of the welded joint can be greatly improved. Therefore, in the method of manufacturing the fusion splice according to the present embodiment, the leg length on the gusset sheet side is larger than 1/3 or more of the sheet thickness 12 of the gusset sheet (described below) The method of <11>) is performed by welding. By controlling the relationship between the leg length of the gusset sheet and the thickness t2 of the gusset sheet, a sufficient throat depth can be further ensured, so that the stress at the root of the weld can be reduced, and the fatigue characteristics of the splicing joint can be greatly reduced. Upgrade. D25^t2/3... <11> In the usual welding, the leg-length mountain on the substrate side has substantially the same length as the leg length 屯' on the gusset sheet side. However, it is necessary to have a leg length on the side of the substrate... to satisfy the above <1>, and the legs on the gusset side are long, satisfying the above <1;> and the above <11> As described above, in the method of manufacturing the face gusset welded joint of the present embodiment, the predetermined notch portion is provided in the gusset sheet, so that the leg hair on the gusset sheet side is larger than 1/3 of the sheet thickness tz of the gusset sheet. And satisfied In the manner of <ι>, a sufficient refining penetration is obtained, and the corner-filling and refining is performed. And the angle of the gap of the gusset should be 0 at 45. Above, 75. A notch is formed in the following range. Further, it is preferable to obtain a fusion penetration angle of 0 by obtaining a sufficient weld penetration-welding method. Above, 75. Fillet welds in the following mines. In this way, by providing the notch portion in the gusset sheet, it is possible to sufficiently ensure the penetration of the melt 22 201114536 to perform the fusion erection and increase the sectional area of each member joined by the weld metal to greatly ensure the throat depth. Therefore, the stress occurring at the root of the weld can be lowered and the fatigue characteristics of the splice joint can be effectively improved. Further, in the fusion splice according to the present embodiment, in the fillet welded portion formed as described above, an impact of improving the fatigue characteristics of the welded end portion itself is applied to at least the welded portion of the welded portion at the end portion of the end portion. deal with. The impact treatment must be performed at least on the substrate-side welding end portion of the end peripheral welded portion where the fatigue crack is likely to occur when the repeated stress is applied. However, it is also possible to apply an impact treatment to all the welded end portions of the end peripheral welded portion or the fillet welded portion. The impact treatment for improving the fatigue characteristics may be a hammering treatment such as a beading method or a hammering method. The impact treatment method is not particularly limited. In other words, the welded end portion is impacted to such an extent that it is impossible to determine the position of the end line of the welded end portion of the front portion of the impact portion, and the smooth valley portion is formed at the melting end portion to plastically flow. (plastic flow) can be given a compressive residual stress. However, it is very suitable because the impact treatment (υιτ processing) of the ultrasonic shock treatment device is relatively efficient. The conditions of the chat impact processing of the secret end portion are not particularly limited. At this time, it is preferable to perform an appropriate UIT impact treatment in accordance with the fatigue characteristics required for the material (member). Hereinafter, a case where the ultrasonic processing device (4) is processed (ΙΠΤ processing) will be exemplified. In the impact treatment, it is preferable to make the ultrasonic impact mark (10) into the following range: that is, the radius of curvature of the cross section of the welded end of the vertical rib joint end is not less than 0 surface, iO.Omm or less, and from steel (substrate or The depth of the surface of the gusset sheet to the thickness of the steel is as follows: 〇5_ or more, ^瞧23 201114536 or less. Preferably, the depth is 〇 lmm or more and 〇.4 mm or less. When the radius of curvature r of the impact treatment mark (ultrasonic impact mark) 11 is more than 1.0 mm or more, stress concentration can be sufficiently alleviated to the fillet welded portion. Further, when the radius of curvature r is less than 10. 〇 mm, the effect of mitigating stress concentration increases as the curvature is increased by half. At this time, the fatigue characteristics of the welded joint can be further improved. The radius of curvature r can be appropriately determined in consideration of the processing time. On the other hand, the impact treatment marks (ultrasonic shock marks) 11 are usually formed mainly by the fusion end portions 7, 7. However, the impact treatment mark (ultrasonic impact mark) 11 is preferably formed to include at least a part of the weld metal 5 and the heat affected portion. Therefore, it is preferable to select the ultrasonic impact position and the curvature radius r of the ultrasonic shock mark by taking into consideration the position where the impact treatment mark 11 is formed. Further, when the depth f of the impact treatment mark (ultrasonic shock mark) of the substrate 2 or the gusset sheet 3 is less than 1. 〇mm or less, as the depth f increases, the vicinity of the smelting end portion 7 is liberated. The effect of stretching residual stress or the effect of imparting compressive residual stress also increases. Therefore, a significant increase in the fatigue resistance of the welded joint can be expected. Moreover, once the depth f is increased, sufficient time is required, so the depth f needs to be determined in consideration of efficiency. Therefore, the depth f of the ultrasonic shock marks is preferably less than 1.0 mm. However, the depth f of the ultrasonic shock mark 11 is not particularly limited. In the case where the position of the end line of the welded end portion before the impact treatment cannot be discriminated, the depth of the ultrasonic impact mark may be 0.05 mm or more. Further, the ultrasonic percussion device 12 for performing the ultrasonic shock treatment can be, for example, the device disclosed in the above Patent Documents 1 to 3. The shape of the vibration terminal (slightly) of the supersonic 24 201114536 sonication device 12 can be selected in consideration of conditions such as the shape of the ultrasonic percussion mark 11 to be formed. For example, it is preferable to set the curvature radius of the axial direction cross section of the distal end of the ultrasonic impact device 12 to 1.0 mm or more and i 〇 mm or less. The shape of the front end will be the shape of the ultrasonic shock mark n after the impact treatment. Therefore, when the radius of curvature is too small, a notch-like groove is formed at the end portion of the fusion, and the stress concentration becomes high. On the other hand, when the radius of curvature is too large, the shape of the bead is welded, and even if the end portion is welded by the impact treatment, it is difficult to form an ultrasonic shock mark having a predetermined curvature radius r. Therefore, in order to surely form an ultrasonic shock mark having a predetermined radius of curvature r, the radius of curvature of the axial cross section of the tip end of the ultrasonic impact device 12 is preferably in the range of 1.0 mm or more and l〇 mm or less. Further, the s-curvature radius is preferably 1.5 mm or more and 5.0 mm or less. The conditions for the ultrasonic shock treatment can be appropriately selected in accordance with the fatigue characteristics required for the use. Therefore, the conditions of the ultrasonic shock treatment are not particularly limited. For example, it is preferable to vibrate the vibration terminal at a frequency of 2 kHz or more and 5 kHz or less, and perform ultrasonic shock with a power of 〇 〇 lkw or more and 4 kW or less. However, since it is not necessary to perform an impact by ultrasonic vibration, it is possible to perform an impact at a low frequency of less than #2 kHz or a discontinuous period. Thereby, the metal of the surface of the welded end portion is plastically flowed to release the tensile residual stress which is formed by the cooling of the fillet welded portion, and the residual stress field of the compression is formed. Further, by applying a repeated ultrasonic shock treatment in a heat-insulating state in which heat generated by the processing does not escape from the surface of the dazzling end portion, the vicinity of the welded end portion can be applied, for example, with hot forging (h〇t Forging) the same fairy. As a result, the crystal structure of the adjacent end can be miniaturized, and the fatigue characteristics of the fusion joint can be improved. 25 201114536 Example A steel sheet (thickness: 14 mm x width 50 mm x length: 500 mm) of the steel type JIS SM490B described in JIS G3106 was used for the substrate. Further, in the gusset sheet, a steel sheet having the same steel type as the substrate (thickness: 14 mm x width 50 mm x length: 100 mm) was used. The gusset sheet is placed on the substrate as shown in Fig. 4A. That is, the longitudinal direction of the gusset sheet is made to coincide with the longitudinal direction of the substrate 2, and the width direction of the gusset sheet is aligned with the direction perpendicular to the upper surface of the substrate. Further, a gusset sheet is disposed at a substantially central portion (the center portion of the upper surface) in the longitudinal direction and the wide direction of the substrate. The gusset sheet which was disposed as described above was welded to the substrate to prepare a test body of the face gusset refining joint. Further, a gusset sheet (not shown) similar to the gusset sheet on the upper surface of the substrate is provided on the lower surface of the substrate. The position of the lower corner plate is the same as the position of the upper corner plate. A test body of a two-body slanted gusset joint was produced, and among the two scorpions, a 16-piece gusset was provided with a notch. In addition, among the 16 bodies, a steel plate (thickness 20 mm x width 50 mm x length i 〇〇 mm) which is the same steel type as the substrate and thicker than the other slabs of the other body is used as the two bodies. Corner plate. Further, as shown in Fig. 7B, the test body in which the notch portion of the gusset sheet is not formed is a conventional outer surface gusset welded joint test body. In the test body of the above-mentioned test body, the notch portion 4 was formed by cutting a corner portion of the substrate side at both ends in the longitudinal direction of the gusset sheet. At this time, to meet The manner of <2> determines the notch height 3 and the predetermined leg length 屯, and changes the notch angle Θ (the angle formed by the surface of the substrate and the notch surface of the gusset sheet) between 25 and 80°, and the gap is changed. Length χ. 26 201114536 On the other hand, the predetermined leg length d2 on the gusset sheet side and the predetermined leg length on the substrate side are set based on the welding design standard or the like. The above test bodies were all semi-automatically welded (GMAW: voltage 35V, current 350A, speed 3mm/sec, and gas composition C02100%) using a carbon dioxide gas of YGW-11 (JIS Z332l: wire diameter 1.4 mm) as a weld line. Refining. Further, the leg length d2 on the side of the gusset sheet is in the range of 1/4 or more and 3/4 or less of the thickness t2 of the gusset sheet. Further, the leg-long mountain on the substrate side has a length equal to 4 in the leg piece side except for the sounding test body, and has substantially the same length. These legs, the long legs 'and the 屯', are larger than the predetermined leg length of the substrate and the predetermined leg length of the gusset sheet side, except for the test body of the one body. The welding end portion of the substrate-side welded portion of the end surface gusset welded joint test body thus produced was subjected to UIT treatment by an ultrasonic shock treatment device to form an impact treatment mark. The radius of curvature of the axial direction cross section of the distal end of the vibration terminal (slightly) of the ultrasonic shock absorbing apparatus is 1.0 to 10.0 mm. Further, the condition of the UIT processing is the number of vibrations: 2πΗζ' power: IkW. Further, an impact treatment mark having a curvature half r of 1.〇~i〇.〇mm and a surface depth f of less than 1.0 mm is formed in the vicinity of the fusion end portion on the substrate side of the end peripheral welded portion. However, for comparison, the UIT treatment was not applied to the two bodies of the above-mentioned 20-body test bodies. A fatigue test was applied to the test body of all the outer gusset welded joints finally produced. In the fatigue test, the number of repetitions of the stress amplitude of 100 MPa and the stress ratio (U to the fracture) was tested. After the fatigue test, the thickness of the gusset plate was approximately 27 201114536 along the longitudinal direction. The sample was cut off to prepare a sample for cross-section observation, and the vicinity of the end portion of the end portion in the longitudinal direction of the sample (test body) was etched with a nital etchant to measure the penetration penetration. The length (intrusion length of the weld metal) x', the leg length mountain ', the leg length d2', and the throat depth t. Further, the shape of the impact treatment portion of the welded end portion was observed. The results are shown in Table 1. 1 leg Changshan', leg length d2', and throat depth t, the average 値 of each position (four places) where the end peripheral welded portion is formed. That is, the leg is long mountain', the leg length is d2', and the throat In the deep t, the end portion of the gusset sheet is welded to the end portion of the end portion of the gusset sheet, and the end portion of the substrate is welded to the end portion. The fatigue characteristics (the number of repetitions until the break) are the entanglements of the test bodies. 28 201114536

備註 習知例 習知例 習知例 習知例 直至斷 裂為止 的次數 (萬次） (Ν m r—Η 〇 All 寸 (Ν Ο Γ^Ί ο ι〇 All 卜 〇 «—Η 〇 S Η g § o 寸 o 沄 All CN 〇 o (N CN Ο 寸 喉厚 (mm) (N 一 (Ν 一 in 〇6 00 \ό (Ν iri Τί· »«·Ή 00 (Ν 1〇 寸 rn CN — in 〇6 00 <N »ri 〇6 m 卜 r—H σ\ OO oo d2'/sin0' r—* vd 〇〇 od 寸 Γ-； ^- in 寸 Ο — 〇 〇 〇〇 CTn od o 〇\ *r> o 0 1 < (Ν σ< (N Os σ\ ο 1 1 « 00 od ίη ο r-^ + X οο 卜 G\ (Ν r*H 00 d i—Η ο ο (Ν r-； 一 00 卜 od On (N 〇\ (N r-^ G\ r^ Ο) m c> OO ο Η α> (Ν ^"Η ON 熔接 渗透 角度 Θ， (°) ζ cn 00 OJ Q) in <〇 -Μ- ΓΟ 熔接 滲透 長度 X, (mm) ο 卜 ο in <Ν ο ο r—^ O — U^) iT) \D 卜 1 1礴 oo iT) V〇 l〇 oo 腿長 d2， (mm) νο m vd ro (Ν Ο r-H ο 寸 寸 ί~Ή <N vd (N \D m \ό \〇 m m \〇 ο ^―Η 山， (mm) (Ν cn 寸 ν〇 cn (Ν ^6 寸 Ο ο (Ν 寸· r-H m 寸 \ό 寸 寸 vd (Ν 寸 v〇 ^t； r*H 00 CN 寸 寸 Η 5 墉 杷 杷 杷 碟 杯 杷 杯 杷 杯 杯 杷 缺口部 D _ x百 靠本旦 1 I in cn Τ"Η ο Ο 1 寸 卜 ο 1 (N 1 Ή ^―Η VO v〇 v〇 rn 卜 (Ν D制c«百 袭彳《 旦 1 I ο ο 1 寸 寸 1 Ό ν〇 \o vo ν〇 卜 D铡 ^ 茏瓶：①L ο ο |〇 jn g g 〇 g JO jri in in (N D匕 4sp 杷 杷 墉 杷 杯 你 +? 杷 杷 杷 預定腿長 d2 (mm) Ο VO ο ο 寸 寸 寸 v〇 V〇 di (mm) ο \〇 ο Η ο »—Η 寸 寸 寸 \〇 Ό 角板片 板厚 h (mm) 寸 寸 寸 寸 r—^ 寸 寸 寸 Τ~Η 寸 寸 寸 »—Η 宕 寸 寸 寸 寸 寸 寸 寸 r—Η 寸 6 Z (Ν m 寸 ν〇 卜 〇〇 〇\ 〇 F· H (N m T-H 寸 i/Ί v〇 卜 00 ^H Os o (N 29 201114536 在實施有UIT處理的No.2〜5、7〜20之試驗體中，於熔接 止端部皆形成有衝擊處理痕，在曲率半徑!"為1.〇〜10.0mm、 且從鋼材表面到基板之厚度方向的深度f在小於1 .〇mm以下 範圍内，而熔接止端部之形狀為曲線形。Remarks The number of times in the conventional example of the conventional example until the break (10,000 times) (Ν mr—Η 〇All inch (Ν Ο Γ^Ί ο ι〇All 〇〇«—Η 〇S Η g § o inch o 沄All CN 〇o (N CN Ο inch throat thickness (mm) (N one (Ν一 in 〇6 00 \ό (Ν iri Τί· »«·Ή 00 (Ν 1〇 inch rn CN — in 〇 6 00 <N »ri 〇6 m 卜r-H σ\ OO oo d2'/sin0' r-* vd 〇〇od ΓΓ-; ^-in inch Ο — 〇〇〇〇CTn od o 〇\ * r> o 0 1 < (Ν σ< (N Os σ\ ο 1 1 « 00 od ίη ο r-^ + X οο 卜 G\ (Ν r*H 00 di-Η ο ο (Ν r-; 00 od On (N 〇\ (N r-^ G\ r^ Ο) m c> OO ο Η α> (Ν ^"Η ON fusion penetration angle Θ, (°) ζ cn 00 OJ Q) in &lt ;〇-Μ- 熔 fused penetration length X, (mm) ο οο in <Ν ο ο r—^ O — U^) iT) \D 卜 1 1礴oo iT) V〇l〇oo leg length d2 , (mm) νο m vd ro (Ν Ο rH ο 寸 inch ί~Ή <N vd (N \D m \ό \〇mm \〇ο ^―Η山, (mm) (Ν cn 〇ν〇cn ( ^6 inch Ο ο (Ν inch · rH m inch ό inch inch vd (Ν inch v〇^t; r*H 00 CN inch inch Η 5 墉杷杷杷 cup cup 杷 cup 杷 cup 杷 gap D _ x hundred By Benden 1 I in cn Τ"Η ο Ο 1 inch Bu ο 1 (N 1 Ή ^ Η VO v〇v〇rn Bu (Ν D system c «百袭彳 "1 1 ο ο 1 inch inch 1 Ό 〇〇o vo 〇 铡 D铡^ 茏 bottle: 1L ο ο |〇jn gg 〇g JO jri in in (ND匕4sp 杷杷墉杷杯你+? 杷杷杷Predetermined leg length d2 (mm) Ο VO ο ο 寸 inch inch v〇V〇di (mm) ο \〇ο Η ο »-Η inch inch inch 〇Ό 角 板 plate thickness h (mm) inch inch inch r-^ inch inch inch Η 寸 inch inch» Η 宕 inch inch inch inch inch inch r-Η inch 6 Z (Ν m inch ν〇卜〇〇〇 \ 〇F· H (N m TH inch i/Ί v〇卜 00 ^H Os o (N 29 201114536 in implementation In the test body No. 2 to 5 and 7 to 20 of the UIT treatment, impact treatment marks were formed on the welded end portions, and the radius of curvature was 1. 〇 10.0 mm, and the steel was obtained. Surface to the substrate thickness direction of the depth f in the range of less than 1 .〇mm, the shape of the end stop of fused curvilinear.

如表1所示，於角板片未設置缺口部時，未施加有UIT 處理的習知例一No. 1之試驗片’與施加有UIT處理的習知例 —No.2之試驗片在相較之下，其疲勞特性較為劣化。以此 比較’確認了以UIT處理之疲勞特性之改善。又，在Νο·6 之試驗片中，雖於角板片設置有充分的缺口部，且熔接接 頭之各尺寸（例如，腿長山’、d2’）皆滿足了 <1>式，但未施加 有UIT處理。因此，直至斷裂為止的重複次數為30萬次左 右。該重複次數，與未施有UIT的No.l試驗體為同水準。如 此一來，即便在形成有缺口部，且確保有腿長山，、d2,之情 況下’亦無法發揮因喉深之擴大所帶來的疲勞特性之改善 效果。 在Νο·8及No.ll之試驗體中，未於角板片設置缺口部， 且熔接接頭之各尺寸並未滿足〇式。此外，角板片側之腿 長屯’亦不夠充分。因此，即便施加有UIT處理，亦無法使 熔接接頭之疲勞特性提升。 又，在Νο.9、1〇及12之試驗體中，雖於角板片設置有 缺口部，但角板片側之腿長d2，並未滿足上述<11；>式。因 此，無法使熔接接頭之疲勞特性提升。 在No.ll及12之試驗體中，由於相對於角板片之板厚 t2，腿長d2,較短，因而無法取得對應角板片之板厚t2的喉 30 201114536 深。因此、，在喉深部之應力變高、且溶接金屬斷裂，而N〇 u 及12之試驗體之壽命皆不太長。 a相對於上述試驗體，於角板片形成具有充分尺寸的缺 口部、且以滿足填角炼接部之尺寸（例如，上述〈卜式）的條 件加以填角料而施加有UIT處理之^ 3及4之試驗體中， 如表1中所示可知"職接頭之疲勞特性有大幅提升。 在Νο.13之試驗體中，與Ν〇3之試驗體相較下其缺口 角度Θ較小’且初期的缺口角度0小於45。。於是為了充 刀確保對炫接根部的炫接滲透，而加長了炼接時間。其結 果發現，可充分確絲終龍接滲透量、且雜渗透長度χ， 滿足<1>式’而使疲勞特性提升之效果。而，當缺口角度0 很小時，為了確保對熔接根部的熔接滲透，必須有高度熔 接技術及時間。因此，卫業上，宜將缺口角度Θ設定在適 當範圍内。 在Νο.5之試驗體中，具有充分的尺寸之缺口部及填角 熔接部。因此，與於角板片未形成缺口部的N〇.2i試驗體 相較下，其熔接接頭之疲勞特性有改善。 在No.14之試驗體中，與N〇13之試驗體相異，其缺口 角度0有超過75。在該試驗體中，最終以熔接使缺口部充 分熔接滲透。此時，熔接滲透角度0，為75。，且填角熔接 部之尺寸有滿足上述<1>式。其結果發現了熔接接頭之疲勞 壽命的延長效果。又，由於No.14之試驗體的熔接滲透角度 0,較Νο.5之試驗體更小，因此No.i4之試驗體的疲勞特性 較Νο.5之試驗體更高。 31 201114536 在N〇·15之試驗體中，熔接滲透角度Θ，小於45。、並發 現有疲勞壽命之延長。與Νο·13之試驗體相同，炫接渗透角 度0’愈小愈好，但若慮及如上述現實面_接之炼接渗透 量，則以大於30°以上為宜。 Νο.16及17之t式驗體係其基板側之腿長山，相對上較小 之例。在No.16之試驗體中，由於填角熔接部之尺寸未滿足 <*1>式，因祕接止端部之應力集中變大，而無法取得疲勞 哥命之延長效果。另-方面，在No l7之試驗體中，填角炼 接部之尺寸有滿足<1>式’且確認有舰接接頭之疲勞特性 提升之效果。 又，Νο·18之試驗體係其熔接滲透長度χ，相對上較小之 例。在該試驗體中，由於填角熔接部之尺寸未滿足<丨>式， 因此炫接止端部之應力集中變大，而無法取得疲勞齡之 延長效果。As shown in Table 1, when the notch portion was not provided in the gusset sheet, the test piece of the conventional example No. 1 to which the UIT treatment was not applied and the test piece of the conventional example in which the UIT treatment was applied - No. 2 were In comparison, its fatigue characteristics are degraded. This comparison confirmed the improvement in the fatigue characteristics of the UIT treatment. Further, in the test piece of Νο·6, although the gusset sheet is provided with a sufficient notch portion, and the respective dimensions of the welded joint (for example, leg length mountain ', d2') satisfy the <1> formula, UIT processing is applied. Therefore, the number of repetitions until the break is about 300,000 times. The number of repetitions was the same as that of the No. 1 test body to which no UIT was applied. As a result, even if a notch is formed and the leg is long and d2 is secured, the effect of improving the fatigue characteristics due to the expansion of the throat depth cannot be exhibited. In the test bodies of Νο·8 and No. 11, the notch portion was not provided in the gusset sheet, and the respective dimensions of the welded joint did not satisfy the 〇 type. In addition, the leg 屯 on the gusset side is not sufficient. Therefore, even if UIT processing is applied, the fatigue characteristics of the welded joint cannot be improved. Further, in the test pieces of Νο.9, 1〇, and 12, although the notch portion was provided in the gusset sheet, the leg length d2 on the gusset sheet side did not satisfy the above-mentioned <11;> formula. Therefore, the fatigue characteristics of the welded joint cannot be improved. In the test bodies of Nos. 11 and 12, since the leg length d2 was short with respect to the plate thickness t2 of the gusset sheet, the throat 30 201114536 deep corresponding to the plate thickness t2 of the gusset sheet could not be obtained. Therefore, the stress in the deep part of the throat becomes high and the molten metal is broken, and the life of the test bodies of N〇 u and 12 is not too long. With respect to the above-mentioned test body, a notch having a sufficient size is formed on the gusset sheet, and a UIT treatment is applied to the fillet to satisfy the size of the fillet-finished portion (for example, the above-described formula). In the test bodies of 3 and 4, as shown in Table 1, the fatigue characteristics of the "joint joints were greatly improved. In the test body of Νο. 13, the notch angle Θ was smaller than that of the test piece of Ν〇3 and the initial notch angle 0 was less than 45. . Therefore, in order to fill the knife to ensure the penetration of the dazzling roots, the length of the refining time is lengthened. As a result, it has been found that the effect of the fatigue property can be improved by satisfying the <1>formula' However, when the notch angle 0 is small, in order to ensure the penetration penetration of the welded root, high-fusion technology and time must be available. Therefore, in the Wei industry, it is advisable to set the gap angle Θ within the appropriate range. In the test body of Νο. 5, a notch portion having a sufficient size and a fillet welded portion are provided. Therefore, the fatigue characteristics of the welded joint are improved as compared with the N〇.2i test body in which the gusset sheet is not formed with a notch portion. In the test body of No. 14, it was different from the test piece of N〇13, and the notch angle 0 exceeded 75. In the test body, the notch portion was finally welded and infiltrated by welding. At this time, the penetration penetration angle is 0, which is 75. And the size of the fillet weld portion satisfies the above <1> formula. As a result, the effect of prolonging the fatigue life of the welded joint was found. Further, since the weld penetration angle of the test piece No. 14 was smaller than that of the test piece of Νο. 5, the test body of No. i4 had higher fatigue characteristics than the test piece of Νο. 31 201114536 In the test body of N〇·15, the penetration penetration angle Θ is less than 45. And concurrently extend the fatigue life. The same as the test body of Νο·13, the smaller the penetration angle 0' is, the better, but it is preferable to use more than 30° or more in consideration of the above-mentioned actual surface. Tο.16 and 17 t test system, the leg side of the substrate side of the mountain, relatively small example. In the test body of No. 16, the size of the fillet welded portion did not satisfy the <*1> formula, and the stress concentration of the end portion was increased, and the effect of prolonging fatigue was not obtained. On the other hand, in the test body of No. 7, the size of the fillet refining portion satisfies the <1>formula' and the effect of improving the fatigue characteristics of the ship joint is confirmed. Moreover, the test system of Νο·18 has a splicing penetration length χ, which is relatively small. In the test body, since the size of the fillet welded portion does not satisfy the <丨> formula, the stress concentration at the end portion of the dazzle is increased, and the effect of prolonging the fatigue age cannot be obtained.

No.19之試驗體係其缺口高度3較預定腿長屯及腿長γ 更大之例。在該試驗體中，於角板片側之端部周邊炫接部 會殘留未轉接金㈣蓋的細部，並㈣板“之炫接 止端部7’發生龜裂’而無法取得充分的疲勞特性。而在The test system of No. 19 has an example in which the notch height 3 is larger than the predetermined leg length and leg length γ. In the test body, the portion of the splicing portion on the side of the gusset sheet is left with a detail of the unreceived gold (four) cover, and the (four) plate "cracking end portion 7' is cracked" and sufficient fatigue cannot be obtained. Characteristic

No.19之試驗體中，由於無法定義熔接滲透角度^，(表丨中的 §己號*)’因此使用位置A來取代炫接止端部7，，以評估炼接 滲透角度0 ’。 在Νο·20之試驗體中，係與N〇3&N〇13之試驗體相較 下’其缺口角度0更小之例。在該試驗體中，並無法確保 充分的熔接滲透達至缺口部之前端為止。但，熔接滲透長 32 201114536 度χ’有滿足<1>式，且有觀察到使疲勞特性提升之效果。 而，在Νο·3及No.13之試驗體中，與]^〇 2〇之試驗體相較下， 其熔接作業之負擔較小，而可輕易地確保對熔接根部的熔 接滲透。因此，工業上，宜將缺口角度0設定在適當的範 圍内。 從該等結果確認出，藉由製作滿足上述條件的熔接接 頭，可使熔接接頭之疲勞特性大幅提升。 產業上之可利用性 依據本發明，由於可在面外角板之熔接接頭，有效地 加深熔接根部之熔接滲透、使喉深增大，而可緩和在熔接 根部之應力的集中。於是，以如喷珠法或UIT處理之衝擊處 理，可充分活用使熔接止端部之疲勞特性提升的效果而 可促使面外角板熔接接頭全體之疲勞特性更加提升。 【圖式簡單說^明】 第1圖係示意性顯示本發明之一實施形態中，熔接後的 面外角板炫接接頭之第4Β圖的Α-Α視局部剖面圖。 第2圖係示思性顯示本實施形態中，衝擊處理後的面外 角板熔接接頭之第4D圖的Β-Β視局部剖面圖。 第3圖係顯示本實施形態中，面外角板熔接接頭之其他 形態的局部剖面圖。 第4Α圖係顯示本實施形態中面外角板熔接接頭之製作 順序的立體示意圖。 第4Β圖係顯示本實施形態中面外角板熔接接頭之製作 順序的立體示意圖。 33 201114536 圖係顯示本實施形態中面外角板炫接接頭之製作 順序的立體示意圖。In the test body of No. 19, since the weld penetration angle ^ (the § number * in the table 无法) could not be defined, the position A was used instead of the splicing end portion 7, to evaluate the refining penetration angle 0'. In the test body of Νο·20, it is an example in which the notch angle 0 is smaller than that of the test body of N〇3&N〇13. In this test body, sufficient weld penetration could not be ensured until the front end of the notch portion. However, the weld penetration length 32 201114536 degrees χ' has satisfied the <1> formula, and the effect of improving the fatigue characteristics has been observed. On the other hand, in the test bodies of Νο.3 and No. 13, the welding work was less burdened than the test body of 〇2, and the welding penetration of the welded root portion was easily ensured. Therefore, it is desirable in the industry to set the notch angle 0 within an appropriate range. From these results, it was confirmed that the fatigue characteristics of the welded joint can be greatly improved by producing a welded joint satisfying the above conditions. Industrial Applicability According to the present invention, since the welded joint of the outer gusset can effectively increase the penetration penetration of the welded root portion and increase the throat depth, the concentration of stress at the welded root portion can be alleviated. Therefore, the impact treatment such as the bead blasting method or the UIT treatment can sufficiently utilize the effect of improving the fatigue characteristics of the welded end portion, and the fatigue characteristics of the entire gusset welded joint can be further improved. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a partial cross-sectional view, partly in elevation, of a fourth embodiment of an ellipsoidal splicing joint in accordance with an embodiment of the present invention. Fig. 2 is a partial cross-sectional view showing the fourth embodiment of the outer surface gusset welded joint after the impact treatment in the present embodiment. Fig. 3 is a partial cross-sectional view showing another embodiment of the face gusset welded joint in the embodiment. Fig. 4 is a perspective view showing the manufacturing procedure of the faceted gusset welded joint in the present embodiment. Fig. 4 is a perspective view showing the manufacturing procedure of the faceted gusset welded joint in the present embodiment. 33 201114536 The figure shows a three-dimensional schematic diagram of the production sequence of the face-to-face gusset joint in the present embodiment.

^ 4D '、顯示本實施形態中面外角板炫接接頭之製作 順序的立體示意圖。 第圖係顯示本實施形態中面外角板溶接接頭之角板 片之其他形態的立心㈣。 第6Α圖係說明在本實施形態中，重複應力起作用時， 應力集中至面外角板熔接接頭之端部周邊熔接部之狀況的 剖面示意圖。 第6Β圖係說明重複應力起作用時，應力集中至面外角 板’熔接接碩 部周邊熔接部之狀況的剖面示意圖。 第6C圖係說明重複應力起作用時，應力集中至面 板溶接接頭、部周歧接部之狀況❹!面示意圖。 第7Α圖係顯示習知的面外角板熔接接頭之製 立體示意圖。 外的 第7Β圖係顯示習知的面外角板炫接接頭之製作 立體不意圖。 、 第7 C圖係顯示習知的面外角板熔接接頭之製作順序 立體示意圖。 的 第7D圖係顯示習知的面外角板熔接接頭之製作順序的 立體示意圖。 ‘ 第8圖係顯示喉深及喉深之位置的剖面示意圖。 【主要元件符號說明】 1…面外角板熔接接頭(熔接接頭） 34 201114536 2…基板(鋼板） 3···角板片（鋼板） 4".角板片之缺口部(缺口部） 5···炫接金屬 6…溶融線(Fusion Line) 7···熔接止端部(基板側之熔接止端部） 7’…熔接止端部（角板片側之熔接止端部） 8…炫接根部 9·..填角熔接部 10…端部周邊熔接部 101…面外角板熔接接頭 102…基板 103…角板片 107、107’…熔接止端部 109…填角熔接部 11…衝擊處理痕(超音波衝擊痕） 110…端部周邊熔接部 111···衝擊處理痕 12…超音波衝擊處理裝置(衝擊處理裝置） 13…離熔接根部最短距離的熔接金屬表面之位置 A…角板片之缺口部的高度方向端部之位置 B…角板片之缺口部的長邊方向端部之位置 C…形成缺口部前的角板片之長邊方向端部(角） C’…從角板片側之熔接止端部往基板垂下之垂線與基板表面之 交點 35 201114536 c”…從角板片 R…曲率半徑 之缺口位置A往基板垂下之_絲板表面之交點 S…角板片之缺口面 a."缺口部之高度(晒） w…板寬 X...缺口部之長度㈣(從形成缺σ部前的角板片之基板側端部 C ’到形成缺π後的角板片之基板側端部β為止之長度） 炫歸透長度(mm)(㈣㈣默雜止端雜基=垂下 之垂線與基板表面的交點，到熔接根部為止之長度） X”…表面上看起來的缺口長度 0…缺口角度(°)(基板表面與缺口面S之間的角度） 溶接渗透角度(。)(連結角板片側之炼接止端又部細妾根部 之線、及連結從角板片側之熔接止端部往基板垂下之垂線 與基板表面之交點之線所形成之角度） dl···基板側之預定腿長(mm) dr · ·角板片側之預定腿長(mm) di’···基板側之腿長(mm) 山’…角板片側之腿長(mm) f· · ·衝擊處理痕之深度(mm) r···衝擊處理痕之曲率半徑(mm) t..·喉深 h、tr··板厚 36^ 4D ', showing a three-dimensional schematic diagram of the production sequence of the face-to-face gusset joint in the present embodiment. The figure shows the center of the other form of the gusset sheet of the faceted gusset-sealed joint in the present embodiment (4). Fig. 6 is a schematic cross-sectional view showing the state in which the stress concentrates on the peripheral welded portion of the end portion of the outer surface gusset welded joint in the case where the repeated stress acts. Fig. 6 is a schematic cross-sectional view showing the state in which the stress concentrates on the outer peripheral gusset 'welding the peripheral welded portion of the outer portion when the repeated stress acts. Fig. 6C is a view showing the state in which stress is concentrated to the joint of the panel and the peripheral portion of the joint when the repeated stress acts. Fig. 7 is a perspective view showing a conventional method of manufacturing an out-of-plane gusset welded joint. The 7th image shows the production of the conventional gusseted joints. Figure 7C shows a schematic view of the fabrication sequence of a conventional out-of-plane gusset welded joint. Figure 7D is a perspective view showing the fabrication sequence of a conventional out-of-plane gusset weld joint. ‘ Figure 8 is a schematic cross-sectional view showing the location of the depth of the throat and the depth of the throat. [Explanation of main component symbols] 1...Outer gusset welding joint (weld joint) 34 201114536 2...Substrate (steel plate) 3···Corner plate (steel plate) 4". Notch of notch plate (notch) 5· ··Hybrid metal 6...Fusion line 7···welding end portion (welding end portion on the substrate side) 7'...welding end portion (welding end portion on the gusset sheet side) 8...Hyun Rooting portion 9·. fillet welding portion 10... end portion welding portion 101...outer corner gusset welding joint 102...substrate 103...corner sheet 107,107'...welding end portion 109...corner welding portion 11...impingement Treatment mark (ultrasonic impact mark) 110...end peripheral welded portion 111···shock treatment mark 12...ultrasonic shock treatment device (impact treatment device) 13...the position of the welded metal surface at the shortest distance from the welded root A...the angle The position B of the end portion in the height direction of the notch portion of the plate piece... The position C of the end portion in the longitudinal direction of the notch portion of the gusset plate... The end portion (angle) of the gusset sheet before the notch portion is formed. The intersection of the perpendicular line hanging from the splicing end of the gusset sheet toward the substrate and the surface of the substrate 3 5 201114536 c"...from the corner plate R...the notch position of the radius of curvature A to the substrate _the intersection of the surface of the wire plate S...the notch surface of the gusset plate a."the height of the notch portion (sun) w...board width X: the length of the notch portion (four) (the length from the substrate-side end portion C' of the gusset sheet before the σ-deficient portion is formed to the length of the substrate-side end portion β of the gusset sheet after the π-deflection) (mm) ((4) (4) Miscellaneous miscellaneous base = intersection of the vertical line of the drop and the surface of the substrate, to the length of the welded root) X"... the length of the notch on the surface 0... the notch angle (°) (substrate surface and notch) The angle between the faces S) the penetration penetration angle (.) (the line connecting the splicing end of the gusset sheet side and the fine root portion, and the perpendicular line connecting the splicing end portion of the gusset sheet side to the substrate and the substrate surface The angle formed by the line of the intersection point) dl···The predetermined leg length on the substrate side (mm) dr · The predetermined leg length on the gusset sheet side (mm) di'···The leg length on the substrate side (mm) Mountain' ...the length of the leg on the gusset side (mm) f· · The depth of the impact treatment mark (mm) r···the radius of curvature of the impact treatment mark (mm) t..·throat depth h tr ·· thickness 36

Claims (1)

201114536 七、申請專利範圍： 1. 一種面外角板熔接接頭之製作方法，係具備基板、從該 基板之表面突出的角板片、及填角溶接（fillet we丨d)部 者， 其特徵在於： 將前述角板片之長邊方向之端部的板寬方向之一 端，往板寬w之方向切開，形成一個具有缺口高度a、缺 口長度X、及小於80°以下之缺口角度0的缺口部； 以具有前述缺口部之前述角板片的前述板寬w之方 向之端面與前述基板之表面呈相對向的方式，來配置前 述角板片，且以使前述角板片側之預定腿長d2大於前述 缺口高度a以上的方式，進行填角熔接，來形成前述填 角熔接部，該填角熔接部係前述角板片側之腿長d2’為前 述角板片之板厚t2的1/3以上，且該腿長d2’、前述基板側 之腿長山’、熔接滲透長度X’、及熔接滲透角度0 ’滿足 x,+di，>d2,/sin Θ '^ ； 於前述填角熔接部中，對至少端部周邊熔接 (boxing)部之前述基板側的炫接止端部，施加衝擊處理 (impact treatment) 〇 2. 如申請專利範圍第1項之面外角板熔接接頭之製作方 法，其中前述缺口角度Θ為45°以上、75°以下。 3. —種面外角板熔接接頭，係具備基板、從該基板之表面 突出的角板片、及填角熔接部者， 其特徵在於： 37 201114536 在前述填角熔接部中，前述角板片側之腿長d2’為前 述角板片之板厚t2的1/3以上，且該腿長d2’、前述基板側 之腿長d,’、熔接滲透長度X’、及熔接滲透角度0 ’滿足 x’+di’scb’/sine’，並且，前述填角炫接部中，至少端部 周邊熔接部之前述基板側的熔接止端部形成有衝擊處 理痕跡。 4.如申請專利範圍第3項之面外角板熔接接頭，其中前述熔 接滲透角度為30°以上、75°以下。 38201114536 VII. Patent application scope: 1. A method for manufacturing an outer surface gusset welding joint, comprising: a substrate, a gusset sheet protruding from a surface of the substrate, and a fillet wedd portion, wherein : one end of the end portion of the gusset sheet in the longitudinal direction of the gusset sheet is cut in the direction of the sheet width w to form a notch having a notch height a, a notch length X, and a notch angle of 0 or less. The gusset sheet is disposed such that the end surface of the gusset sheet having the notch portion in the direction of the sheet width w faces the surface of the substrate so as to have a predetermined leg length on the side of the gusset sheet D2 is larger than the gap height a or more, and is subjected to fillet welding to form the fillet weld portion. The fillet weld portion has a leg length d2' on the gusset sheet side which is 1/2 of the sheet thickness t2 of the gusset sheet. 3 or more, and the leg length d2', the leg side of the substrate side, the weld penetration length X', and the weld penetration angle 0' satisfy x, +di, > d2, /sin Θ '^; In the welded portion, at least the end A method for manufacturing an outer surface gusset welded joint of the first aspect of the invention, wherein the notch angle Θ is 45° or more and 75° or less. 3. An outer surface gusset welding joint, comprising: a substrate, a gusset sheet protruding from a surface of the substrate, and a fillet welded portion, wherein: 37 201114536 wherein the gusset sheet side is in the fillet welding portion The leg length d2' is 1/3 or more of the sheet thickness t2 of the gusset sheet, and the leg length d2', the leg length d on the substrate side, the weld penetration length X', and the weld penetration angle 0' are satisfied. x'+di'scb'/sine', and at least the end portion of the end portion of the welded portion of the end portion of the welded portion is formed with an impact treatment trace. 4. The face gusset welded joint of claim 3, wherein the aforementioned penetration penetration angle is 30 or more and 75 or less. 38
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