1364330 . 六、發明說明： ·· 【發明所屬之技術領域】 •. 本發明係關於在造船、橋樑、建築等領域中所使用的τ 型鋼（T-bar) °本發明的T型鋼特別適用為船體構造用 (shipbuilding)材料，其中更適用為τ縱肋（i〇ngitudinal)材。 【先前技術】 船體構造的補強用型鋼(shape steel bar)，習知以來便有使 # 用球緣板材(bulb plate)，但隨船體的大型化，在截面性能提 •升與減輕使用鋼材重量等目的下，大多已使用具有圖9所示 截面形狀的不專邊不等厚角鋼(NAB: unequal leg and thickness angle)。但是，不等邊不等厚角鋼為左右不對稱的截面形狀， 因而用於補強船體時在截面性能上具有方向性，若承受來自 船體外部的水壓等力’在截面内便會發生扭轉力（torsional stress)。所以，為能滿足構造上所要求的性能，便必需使用 •具有能承受上述扭轉力之截面性能的型鋼，但因使用截面積 尺寸較大之物，會有導致出現船體重量增加的缺點。 再者，近年新製造的原油油輪，受近年修訂的海洋污染防 止條約規疋’而被賦予採用下述(a)、（b)任一項義務：⑷雙 層船殼(double hull)構造(double hull type)(船底與船側形成 為雙層構造，構成即使因觸樵或碰撞等導致船體破裂，原油 仍不易流出之狀態）；（b)中層水平中隔艙構造（mid-deck type)(將原油槽分為上下二層，僅將船側部分形成雙層構 098120384 3 1364330 刀隔出上下槽的中間甲板配置於吃水線之下方，靠下 側槽的原4壓力經常彳緒較周圍的水壓為低，即使因觸礁等 V致船底出現開〇 ’靠下侧槽的原油會因浸人之海水的壓力 ， 被往上擠而形成封鎖於槽内之狀S)。特別在雙層船殼内， 在無載貨時’使用為注人海水以使船純安定航行的壓艘水 櫃。所以，在船底或船壁所配置的縱肋材可能直接浸潰於海 水中’因而施以防録塗裝使其具備充分的耐钱性，並要求確 保該塗膜的密接性。 _ 近年’將具有如圖10所示τ形截面形狀(型鋼寬度方向上 的截面形狀）'以腹板為中心而呈線對稱橫截面之形狀的τ 縱肋材使用為船體補強用構件。該Τ縱肋材廣泛使用以厚 板切斷而炼接組I所成之物，此種τ縱肋材（以下有時亦稱 熔接Τ縱肋材」(welded T-bar))在腹板(web)與翼板⑺ange) 的接合部設有炫接部。但是，當在該熔接部上塗裝時，因為 熔接焊珠具有凹凸的形狀’因而塗膜厚度會不均勻，成為炼# 接後未經其他處理(as_welded)的表面㈣部分或邊緣部分 遭受選擇性舰的原因，會導致船體構造構件遭受腐截劣化 的重大問題。㈣止形成此種瑕師mpe如ti㈣塗膜，為使 炼接T縱肋材之炼接焊珠部表面形成平滑狀態，以研磨機 等補修後才塗裝。此種在塗裝前對熔接焊珠部之補修因為 必須跨越型鋼的長邊方向全長而檢查需要補修之部位而頗 耗人工’再加上因為以研磨機等補修而耗費時間，且亦會因 098120384 4 1364330 人工作業成本增加而導致成本上升β 另一方面’相對於此種熔接Τ縱肋材，亦有將以熱軋所 獲得之型鋼利用為τ縱肋材，此種Τ縱肋材’因未施行熔 接τ縱肋材等炫接組裝’因而不會有如上述因熔接部所造 成的塗裝問題。在專利文獻1有揭示：將以熱軋成形為Η 型鋼後再將腹板部裁半(2分割）而製得的Τ型鋼（以下稱「切 割Τ型鋼」（cutT-bar))，使用為Τ縱肋材。此外，在專利文 獻2、3中有揭示：將以熱軋直接獲得的τ型鋼（以下稱「軋 延Τ型鋼」（r〇iied T_bar))，使用為τ縱肋材。 專利文獻1:日本專利特開2002-301501號公報 專利文獻2:曰本專利特開平1^3424^號公報 專利文獻3:日本專利特開2007-331027號公報 【發明内容】 (發明所欲解決之問題） 然而’上述習知技術由切割T型鋼或軋延T型鋼所形成 的T縱肋材，會有如下述問題。 T縱肋材大多使用為沿船體長邊方向的長條構件 (longitudinal)。此情況下，將複數條長度10〜2〇m左右的τ 縱肋材(T型鋼)在長邊方向上熔接接合，而形成長條的船體 構造材(補強材）。此種T縱肋材間的熔接接合部，在船體構 造材的性質上，全都要求具有適當強度。然而，使用習知技 術的切割T型鋼或軋延T型鋼時，會有T縱肋材間的熔接 098120384 5 接合部發生龜裂並進展，導致接合部強度降低的問題發生之 可月bl1生為防止此現象，習知必需採取會大幅降低熔接施工 作業效率的預備作業。 而根據本發明者等探討的結果發現，若使軋延τ型 鋼的形狀適當化’便可大幅改善上述預備作業的負擔。 所以’本發明目的在於提供解決此種習知技術問題而可在 以船、橋樑、建築等領域中使用為構造材等的T型鋼，尤 其在使用為船體構造用T縱肋材時，T縱肋材間的熔接接合 施工性優異之T型鋼。 (解決問題之手段） 本發明者等，針對習知將切割T型鋼或軋延T型鋼使用 為T縱肋材的技術，探討T縱肋材間的熔接接合所發生問 題與其對策，獲得如下述發現。 §在T縱肋材的端部間施行溶接接合時，將突接部斜切 後熔接。此時，為避免因翼板與腹板的熔接線交叉而造成材 質劣化與熔接缺陷，對接觸到翼板的腹板之一部分施以扇形 缺口（scallop)加工，切出扇形缺口。 圖11所示係T縱肋材(τ型鋼)接合部的斜切例。同圖中， 左側係T縱肋材端部的側視圖，右側係τ縱肋材端部的正 視圖’虛線所包圍部分係扇形缺口加工部。另外，如圖所示， 刀另j斜切翼板與腹板的突合部。在此，切割τ型鋼或乳延τ 里鋼’在其腹板與翼板的結合部具有截面呈圓弧狀之填角部 098120384 6 1364330 (fillet)(在圖11或後述圖1中’依「fi」所示圓弧部），而上 述扇形缺口加工必需將填角部除去而使翼板内面成為平 ‘· 垣。若因除去該填角部後的加工面精加工不足，導致成為具 有凹凸的粗糙加工面時，便可能發生如上述之問題，即因應 力集中或應變集中等，導致熔接接合部發生龜裂並進展，而 有產生接合部強度降低等問題的可能性。 T縱肋材所使用的習知切割T型鋼或乳延τ型鋼，從如下 • 述理由，具有截面呈圓弧狀而圓弧半徑（一般稱「填角R」） 在13mm程度以上的填角部。 首先，切割T型鋼因為係將熱軋所獲得之η型鋼(軋延Η 型鋼）的腹板部裁半(2分割）而製造，因此具有相當於軋延η 型鋼的填角部。軋延Η型鋼填角部的填角R之尺寸由日本 工業規格(JIS)規格化’ Η型鋼尺寸越大，填角R亦越大。 一般’船體構造用Τ縱肋材之腹板的高度大多達150mm以 _ 上’且腹板咼度為翼板寬度2倍以上的尺寸。因為在日本工 業規格(JIS)中，腹板高度3〇〇mm的軋延Η型鋼之填角R為 13mm ’因此欲從軋延η型鋼獲得腹板高度達150mm以上 的T縱肋材時’所使用的切割τ型鋼之填角R便達13mm 以上。 另一方面，軋延T型鋼之填角R的尺寸，並未如軋延η 型鋼般規格化，習知軋延Τ型鋼的製造方法’如同軋延η 型鋼般’不得不成為相當程度的龐然大物。例如製造專利文 098120384 7 獻3的乳延T型鋼之方法，使用萬能粗輥軋機(universal mill) 與萬能精㈣機’施行鋼的熱。該熱軋時，應成為τ 型鋼填肖部㈣分’ 純錢的水平輥(horizontal roll)之輥角落部（翼板側之輥肖落部）乾延，再以萬能精親乳 機的水平._落部（翼板側之輥角落部）成形而製成圓 弧狀截面該等萬此粗輥軋機與萬能精輥軋機的水平報角落 R(半從）夕數大致相同，該輥角落R因下述理由並無法縮 得太小。 (a) 若將輥角落R縮小，輥角落部與翼板内面的接觸條件 便趨於嚴苛，二者間會發生疤痕(sc〇ring)。所以，在翼板内 面會發生疤痕瑕疵’導致無法製造適當品質的製品型鋼。 (b) 輥角落部的輥磨損變大，除隨著持續軋延而導致輥角 落R變大之外，亦可能破壞圓弧形狀而導致無法成形為平 滑的單一半徑圓弧。所以，必需頻繁地更換輥，除生產性降 低之外，亦造成製造成本增加。即，難以在低成本下大量生 產製品。 (C)輥角落R越縮小，輥角落部的溫度越容易上升，因此 會因熱而導致輥讨質劣化或損傷。若㈣落部發生龜裂或缺 損等情况時，便不松不更換輥·，導致生產性降低。 如上述問題’在軋延次數較多且壓縮率高的萬能粗輥軋機 中特別明顯。所以，為避免水平報的耗角$以發生上述(a)〜(c) 的問題’必須具有充分大的尺寸，結果，所製得之軋延τ 098120384 8 型銅的填角R尺寸亦會具有相當大的尺寸。 再者，製造專利文獻2所載軋延T型鋼之方法，使用設 有上下輕的孔模軋延機(tw〇-r〇ll type mill)施行T型鋼的熱 乾該熱乳中，應成為τ型鋼填角部（fiUet)的部分藉由上下 ^中構成孔㈣特定部位軋延，若該特定㈣位的圓弧半徑 縮小’在翼板内面成為接近垂直角度的上親中’於該挺部位 的圓弧前端與翼板内面會產生疤痕 。所以，翼板内面發生疤 ，瑕疲，無法獲得適當品質的製品型鋼。因而，應軋延填角 二的輕部位之祕+徑，為避免發生上述問題，必須具有充 的尺寸，結果，所製得之軋延T型鋼的填角R，其尺寸 、八有相田的大小。另外，專利文獻2的型鋼具有T形截 i_翼板厚度之哉面形狀被賦予越靠前端越薄的推拔，專 2獻2所載型鋼的製造方法，並無法製造翼板 勻的T型鋼。 j ril者述屬形缺口加工中，填角R(圖U中，填角厌以 ㈣的體㈣寬度也越大，在扇形缺口加 力：it的體積與應精加工為平坦部分的範圍隨之增 加。即，如習知切刦 ^ s1364330 . VI. Description of the invention: ·· Technical field to which the invention pertains. The present invention relates to a T-bar used in the fields of shipbuilding, bridges, construction, etc. The T-shaped steel of the present invention is particularly suitable as Shipbuilding material, which is more suitable as a τ ituitudinal material. [Prior Art] The shape steel bar for the hull structure has been known to have a bulb plate, but with the enlargement of the hull, the cross-sectional performance is improved and reduced. For the purpose of steel weight and the like, most of the unequal leg and thickness angles (NAB: unequal leg and thickness angle) having the cross-sectional shape shown in Fig. 9 have been used. However, the unequal angles of the thick angle steel are left and right asymmetrical cross-sectional shapes, so that when used to reinforce the hull, the cross-sectional performance is directional. If the water pressure from the outside of the hull is received, the force will occur in the cross section. Torsional stress. Therefore, in order to satisfy the structurally required performance, it is necessary to use a steel having a cross-sectional property capable of withstanding the above-mentioned torsional force, but the use of a large-sized cross-sectional area may cause a disadvantage of an increase in the weight of the hull. Furthermore, the newly manufactured crude oil tankers in recent years have been given the following obligations (a) and (b) by the revised marine pollution prevention treaty regulations in recent years: (4) double hull structure ( Double hull type) (The bottom of the ship and the side of the ship are formed in a double-layer structure, which constitutes a state in which the crude oil is not easily discharged even if the hull is broken due to contact or collision, etc.); (b) Mid-deck type in the middle level (The crude oil tank is divided into upper and lower layers, and only the side part of the ship is formed into a double layer. 098120384 3 1364330 The middle deck of the upper and lower slots is disposed below the waterline, and the original 4 pressure of the lower side groove is often compared with the surrounding area. The water pressure is low, even if the bottom of the ship is opened due to the V-resistance, etc., the crude oil in the lower tank will be squeezed up to form a blockade in the tank due to the pressure of the seawater. Especially in double-hulled hulls, when there is no cargo, use a pressurized water tank that is intended to seawater for the ship to be safely sailed. Therefore, the longitudinal ribs disposed on the bottom of the ship or the ship wall may be directly immersed in the sea water. Thus, the anti-recording coating is provided to have sufficient durability, and the adhesion of the film is required to be ensured. _ In recent years, a τ vertical rib having a τ-shaped cross-sectional shape (a cross-sectional shape in the width direction of the steel section) as shown in Fig. 10 and having a shape of a line-symmetric cross section centering on the web is used as a member for hull reinforcement. The escapement rib is widely used as a material obtained by sizing and splicing the group I, and the τ vertical rib (hereinafter sometimes referred to as a welded rib) is formed on the web. A joint portion is provided between the joint of the web and the flap (7) ange. However, when the coating is applied to the welded portion, since the welded bead has a concave-convex shape, the thickness of the coating film may be uneven, and the surface (four) portion or the edge portion which has not been subjected to other treatment (as_welded) may be selected after the refining. The cause of the sex ship will cause major problems in the hull structural members to be degraded by the rot. (4) Forming such a mask of the mpe such as ti (4), in order to form a smooth state on the surface of the welded bead of the welded T longitudinal rib, and then repairing it with a grinder or the like. This kind of repair of the welded bead part before painting is necessary because it has to cross the entire length of the longitudinal direction of the steel and it is necessary to repair the part to be repaired. It is also time consuming because it is repaired by a grinder or the like, and it is also caused by 098120384 4 1364330 Increase in labor costs and increase in cost β On the other hand, 'relative to such welded escapement ribs, there are also steels obtained by hot rolling as τ longitudinal ribs, such escapement ribs' Since the fusion τ longitudinal ribs and the like are not assembled, the coating problem caused by the welded portion is not caused. Patent Document 1 discloses that a Τ-shaped steel (hereinafter referred to as "cutT-bar") obtained by forming a Η-shaped steel by hot rolling and cutting the web portion (two-division) is used as Escaped ribs. Further, Patent Documents 2 and 3 disclose that a τ-shaped steel (hereinafter referred to as "r〇iied T_bar") which is directly obtained by hot rolling is used as a τ vertical rib. Patent Document 1: Japanese Laid-Open Patent Publication No. JP-A-2002-301501, No. JP-A No. Hei. No. Hei. No. Hei. No. 2007-331027. Problem) However, the above-mentioned conventional technique consists of cutting T-shaped steel or rolled T-shaped steel T-shaped ribs, which has the following problems. Most of the T longitudinal ribs are used as longitudinal members along the long side of the hull. In this case, a plurality of τ vertical ribs (T-shaped steel) having a length of about 10 to 2 〇m are welded and joined in the longitudinal direction to form a long hull structural material (reinforcing material). The fusion joint between the T longitudinal ribs is required to have an appropriate strength in the properties of the hull structure. However, when the T-shaped steel or the rolled T-shaped steel is cut by a conventional technique, the joint between the T longitudinal ribs 098120384 5 is cracked and progresses, and the problem that the joint strength is lowered may occur. To prevent this, it is necessary to take preparatory work that will greatly reduce the efficiency of welding construction work. As a result of investigation by the inventors of the present invention, it has been found that the burden of the preparatory work can be greatly improved by appropriately shaping the shape of the rolled τ-shaped steel. Therefore, the present invention aims to provide a T-shaped steel which can be used as a structural material or the like in the fields of ships, bridges, buildings, etc., in particular, in the case of using T-longitudinal ribs for hull construction. T-shaped steel with excellent weldability between longitudinal ribs. (Means for Solving the Problem) The inventors of the present invention have studied the problem of using a T-shaped steel or a rolled T-shaped steel as a T vertical rib, and have studied the problems occurring in the fusion joining between the T longitudinal ribs and the countermeasures thereof, and obtained the following. Find. § When the fusion bonding is performed between the ends of the T longitudinal ribs, the protruding portions are chamfered and welded. At this time, in order to avoid deterioration of the material and welding defects due to the intersection of the wing and the web, a sector scallop is applied to a portion of the web contacting the blade to cut out the fan-shaped notch. Fig. 11 shows an example of the chamfering of the joint portion of the T longitudinal rib (τ steel). In the same figure, a side view of the end portion of the T-longitudinal rib on the left side, and a portion surrounded by a broken line at the end of the right-side rib longitudinal rib is a sector-shaped notch processing portion. In addition, as shown in the figure, the knife j cuts the protruding portion of the flap and the web. Here, the cut τ-shaped steel or the lacquered steel '' has a fillet portion 098120384 6 1364330 (fillet) having an arc-shaped cross section at the joint portion between the web and the flap (in FIG. 11 or FIG. 1 described later) The arc-shaped portion shown by "fi" is required to remove the fillet portion and to make the inner surface of the flap flat. When the finished surface after the removal of the fillet portion is insufficiently finished to form a rough surface having irregularities, the above problem may occur, that is, cracking occurs in the welded joint due to stress concentration or strain concentration. Progress, there is the possibility of problems such as a decrease in the strength of the joint. The conventionally cut T-shaped steel or the emulsion-extended τ-shaped steel used for the T longitudinal rib has a rounded corner with an arc-shaped cross section and a radius of the arc (generally referred to as "filled angle R") of 13 mm or more for the following reasons. unit. First, the cut T-shaped steel is manufactured by cutting a half (two-part) of the web portion of the n-type steel (rolled Η steel) obtained by hot rolling, and therefore has a fillet portion corresponding to the rolled n-type steel. The size of the fillet R of the rolled fillet steel fillet is standardized by the Japanese Industrial Standard (JIS). The larger the size of the tantalum steel, the larger the fill angle R. In general, the height of the web of the escapement rib for the hull structure is as large as 150 mm or more and the web twist is twice the width of the flap. Because in the Japanese Industrial Standard (JIS), the fill angle R of the rolled Η steel with a web height of 3 〇〇 mm is 13 mm. Therefore, when it is desired to obtain a T longitudinal rib having a web height of 150 mm or more from rolling η steel. The fill angle R of the cut τ-shaped steel used is 13 mm or more. On the other hand, the size of the fillet R of the rolled T-shaped steel is not as normalized as that of the rolled n-shaped steel. It is known that the manufacturing method of rolled rolled steel is 'like rolling η-shaped steel' and has to become a considerable monster. . For example, a method of manufacturing a tempered T-shaped steel of Patent No. 098120384 7 is used, and the heat of the steel is performed using a universal mill and a universal fine (4) machine. In the hot rolling, it should be the τ-type steel filling section (4), the corner of the horizontal roll of the pure money (the roll-side part of the wing side of the wing), and then the level of the universal fine pro-milk machine. ._The falling part (the corner portion of the roll on the side of the flap) is formed into an arc-shaped cross section. The horizontal corner of the rough rolling mill and the universal fine rolling mill are substantially the same as the number of corners of the horizontal corner (semi-s). R cannot be shrunk too small for the following reasons. (a) If the roll corner R is narrowed, the contact conditions between the corner portion of the roll and the inner face of the flap tend to be severe, and sc〇ring occurs between the two. Therefore, creases may occur on the inside of the flaps, resulting in the inability to manufacture a product of appropriate quality. (b) The roll wear at the corner portion of the roll becomes large, and the roll angle R becomes larger in addition to the continuous rolling, and the arc shape may be broken to cause a single radius arc which cannot be formed into a smooth shape. Therefore, it is necessary to frequently change the rolls, and in addition to the decrease in productivity, the manufacturing cost is also increased. That is, it is difficult to produce a large amount of products at a low cost. (C) The smaller the roll corner R is, the more easily the temperature of the corner portion of the roll rises, so that the roll is deteriorated or damaged due to heat. If there is a crack or a defect in the (4) part, the roller will not be replaced, resulting in a decrease in productivity. The above problem is particularly remarkable in a universal rough rolling mill having a large number of rolling passes and a high compression ratio. Therefore, in order to avoid the problem of the horizontal report, the problem of the above (a) to (c) must have a sufficiently large size. As a result, the angle R of the type 2 copper obtained by the rolling τ 098120384 will also be Has a considerable size. Further, the method for producing a rolled T-shaped steel as disclosed in Patent Document 2 is carried out by using a hot-drying of a T-shaped steel using a tw〇-r〇ll type mill equipped with a top and bottom light, which should be The part of the τ-shaped steel fillet portion (fiUet) is rolled by a specific portion of the upper and lower holes (4), and if the radius of the arc of the specific (four) position is reduced, the inner surface of the wing plate becomes close to the vertical angle. The front end of the arc of the part and the inner surface of the wing may be scarred. Therefore, the inner surface of the wing plate is smashed and exhausted, and it is impossible to obtain a product steel of an appropriate quality. Therefore, the secret + diameter of the light part of the fillet 2 should be rolled. In order to avoid the above problems, it is necessary to have a sufficient size. As a result, the fill angle R of the rolled T-shaped steel is obtained, and the size thereof is eight. size. In addition, the profile of the steel of Patent Document 2 has a T-shaped cut-thickness, and the thickness of the face is given thinner at the front end, and the steel is not required to be manufactured. Steel. In the case of j ril, the fillet R (in Figure U, the fillet is dissipated with (4) the width of the body (four) is also larger, and the force is added to the fan-shaped notch: the volume of it and the range that should be finished into a flat portion Increase, that is, as the customary robbing ^ s
者，因為扇形缺口 I:軋延T型鋼般具有較大填角R :低=::分’峨成為如一接作業效率 具體而言，屬形缺口加工時α 加丄吁，利用例如氣體切斷而除去腹 098120384 板與填角部時，—般利用手動作業以研磨機精加卫氣體切割 面所以’精加工面積越大，精加工精度亦容易出現變異， 為充分除去氣體切口所f的作業時間便會拉長，導致溶接作 業的效率大幅降低。此外，以研削機械加工時，因為精加工 的面積較大’亦會增加研削碎片的損耗，導致更換頻度增 加’而降低加卫效率。但是，若精加工精度不；1，則在^ 接合後便會應力集+或應變集中而導致龜裂發生並進 展1^成溶接接合部的強度降低，因而即便炫接作業的效率 會變差，仍必需對加卫面施以高精度的精加工。 >根據如上述的發現，針對做為T縱肋材使用的τ型鋼探 4其填角部之最佳形狀、大小，得到以下結論：藉由將截面 圓弧狀填角部的填角R設為IGmm以下、8mm以下尤佳， 便不會因扇形切σ加卫的精加卫不良而造成炼接接合部強 度降低，可大幅提升扇形切口加工的作業效率^此外，τ縱 肋材亦必需施以彎曲加工以形成沿著船殼之形狀，若填角r 較小，則填角部的截面亦變小，而可提升彎曲加工性，所以， 在對T縱肋材彎曲加工時，作業效率亦會提高。 本發明根據此種發現而完成，主旨如下。 (1)一種T型鋼，係腹板高度達15〇mm以上且不具有熔接 部的T型鋼，其特徵在於：形成在腹板與翼板結合部的填 角部，於型鋼寬度方向的截面形狀，呈與腹板及翼板相接的 圓弧狀，且該圓弧的半徑rl為2〜10mm。 098120384 10 種τ型鋼，在上述(1)的τ型鋼中，上述腹板的高度 為上述翼板寬度的2倍以上。 ()種Τ型鋼，在上述⑴或(2)的Τ型鋼中，以熱軋加工 出Τ型鋼。 、、最好對素材鋼片使用萬能魏乾機施以熱軋，而加工出 T型鋼。 ‘ )種T型鋼，在上述（1)〜(3)中任一項之τ型鋼中，腹 板面側的填角部之圓弧半徑，分別跨越型鋼之全長而呈一 定。 ()種T型鋼，在上述⑴〜(4)中任一項之τ型鋼中，翼 板月’』端的角落部在型鋼寬度方向上的截面形狀呈 圓弧狀，且 圓弧的半徑達2mm以上。 ⑹種Τ型鋼，在上述⑴〜(5)中任-項之τ型鋼中，其 為船體構造用T型鋼。 (發明效果） 本發月的T型鋼最佳化形成在腹板與翼板之結合部的填 角。卜之^/狀與大小’相較於習知τ型鋼而縮小其填角R。藉 由本發月在作為τ縱肋材並熔接接合其端部間時，不會 因所施行之細彡缺口加工的精加玉不L麟接接合部 強度降低，可大幅提升扇形切口加工的作業效率，且對τ 縱肋材施以彎曲加工而成沿著船殼之形狀時，亦具有提升彎 曲加工性的效果。所以’適用於船體構造用τ型鋼，尤其 098120384 11 1364330 適用於τ縱肋材。 【實施方式】 圖1所示係本發明Τ型鋼的型鋼寬度方向截面形狀之— 例，f係翼板，W係腹板，fi係腹板w與翼板f的結合部， 即形成在由腹板w與翼板f所構成之角落部的填角部。此 外，表示尺寸的A係腹板高度、B係翼板寬度、u係腹板 厚f、t2係翼板厚度。另外，rl係填角部fi的圓弧半徑（型 鋼寬度方向截面的圓孤半徑）’ r2係翼板前端内面側的角落 部之圓弧半徑（型鋼寬度方向截面的圓弧半徑），『3係翼板前 端外面侧的角落部之圓狐半徑(型鋼寬度方向截面的圓弧半 徑）。 本發明的τ型鋼係腹板高度Aitl5〇mm以上而不具有炫 接部的T型鋼，填角$pfi在型鋼寬度方向的截面形狀呈與 腹板w及翼板f相接的圓弧狀，且圓弧半徑：丨(以下亦稱「填 角R」）设為2〜l〇mm。 不具有熔接部，即非以厚板溶接組裝而得的炼接Τ型鋼， 但仍可為將熱軋所得Η型鋼的腹板裁半(2分割）而得之所謂 切割Τ型鋼。但，就生產性、或因追加將腹板裁半的步二 Τ成成本增加之觀點，以藉由熱軋加續得τ型 。月軋延τ型鋼輕n就熔接施工性之觀點， 厚度除填角部與翼板前端附近之外，全部均呈均句的 098120384 12 1364330 因為本發明之效果，藉由規定填角r而獲得，因此τ型 鋼的腹板高度Α與翼板寬度Β係任意。但，使用為船體構 造用構件時，以腹板高度A達翼板寬度B的2倍以上為佳。 .腹板高度A與翼板寬度B的組合可選擇如： 250mmxl〇〇mm 、300mmxl00mm 、300mmxl25mm 、 350mm><125mm 、400mmxl25mm 、500mmxl50mm 、 600mmxl50mm、700mmxl50mm、800mmx 150mm 等任意組 • 合。腹板厚度tl與翼板厚度t2的組合亦是任意。例如可根 據切割T型鋼的板厚（規格化Η型鋼的腹板厚度與翼板厚度) 進行選擇，當使用為船體構造用構件時，較佳翼板厚度t2 大於腹板厚度tl。另外，一般腹板高度A為翼板寬度β的 10倍以下。 本發明的T型鋼中’填角部fi的填角R(圓弧半徑！·1)無關 於腹板南度Α與翼板寬度Β，均設為2〜10mm、設為2〜8mm _ 尤佳。如前所述，炼接接合T縱肋材的端部間時，在斜切 突接部之後熔接，但為避免因翼板與腹板的熔接線交又而造 成材質劣化與熔接缺陷’而對鄰接翼板的腹板與填角部中一 部分施以扇形缺口加工，切出扇形缺口（參照圖11)。若填角 R超過10mm，填角部的體積與寬度會變為過大，因而在施 行該項扇形缺口加工時，為避免導致熔接接合部強度降低等 的精加工不良，會導致包含有精加工步驟的扇形缺口加工作 業效率降低，且在將T縱肋材彎曲加工為沿著船殼之形狀 098120384 1364330 時，亦會造成彎曲加工性降低。 表1所示係填角R為13mm〜2mm的T型鋼之填角部截面 積與填角寬。其中，填角截面積指圖11右侧的正視圖或圖 1的單側填角部fi(腹板部與翼板部除外）之截面積，當填角 R為零，腹板與翼板形成直角時，填角部截面積便為零。此 外，填角寬指同圖中從單側填角部fi開始起至包夾腹板之 對向側填角部ίϊ的長度。 根據表1可知，相較於填角R為13mm(習知切割Τ型鋼 的最小填角R)，若將填角R縮小至l〇mm，填角部截面積 便減少41%，填角寬減少17%。若在扇形缺口加工中應被 除去的填角部截面積與寬度縮小至此種程度，對包括有精加 工步驟之扇形缺口加工作業的效率化，便具有極大效果。 且，若將填角R縮小至8mm，則相較於填角R為13mm， 填角部截面積減少62%、填角寬減少28%，若將填角R更 加縮小至5mm，同樣的，填角部截面積減少85%、填角寬 減少44%，可獲得更大的效果。 [表1] 填角R (mm) 填角截面積 (mm2) 截面積比 填角寬4 (mm) 填角寬比 13 36.27 1.000 36 1.000 10 21.46 0.592 30 0.833 8 13.73 0.379 26 0.722 5 5.37 0.148 20 0.556 2 0.86 0.024 14 0.389 *腹板厚度l〇mm的情況 098120384 14 1364330 另 ” 方面’本發明的τ型鋼如後所述，利用不同於習知 技術手法的製造方法製造，可將填角R形成l〇mm以下， 但此種製造方法仍難以將填角R形成為未滿2mm。 通常’利用熱軋製造本發明之T型鋼時，使用萬能粗親 軋機與萬能精輥軋機，當利用該等萬能輥軋機軋延時，利用 水平輥的輥角落部軋延、成形填角部。所以，若縮小該輥角 落部的輥角落R,便可縮小填角R，如上述專利文獻3所述， =單純縮小輥角落&，可能發生⑷輥祕部與翼板内面的接 觸條件趨於嚴苛，因二者間發 4广广 門發生的疤痕，導致在翼板内面產 生疤痕瑕疵，而益法劍$此 μ ‘ 適當品質的製品型鋼，（b)軺备茨 部的輥磨損變大，除隨著 （）輥角落 亦可能破壞圓弧形狀k大之外， 弧等問題，_習知技21^細彡騎滑料—半徑圓 形成如本發明般小尺寸的填角t縮小輥角落R’結果亦無法 相對於此’本發明者等择由 乳機軋延時，對特定9在以萬能粗缝機與萬能精輥 關此製造方法容後詳述）^射乳延潤滑油(bbricam)等(有 小，因此導致填角R的尺即便在使水平輕的輥角落R縮 生上述問題之情況下軋延尺:成為非常小時，仍可在不會發 若水平輥的輥角落尺未達然而，即便採用此種製造方法，Because the fan-shaped notch I: has a large fillet angle like a rolled T-shaped steel: low =:: minutes '峨 becomes a work efficiency, specifically, when the shape is notched, α is added, for example, gas cut When the 098120384 plate and the fillet are removed, the grinder is used to grind the gas cutting surface by hand. Therefore, the larger the finishing area, the more precise the finishing precision is, so as to completely remove the gas cut. The time will be lengthened, resulting in a significant reduction in the efficiency of the welding operation. In addition, in the case of grinding machining, the larger the area of finishing, the more the grinding debris will be lost, resulting in an increase in the frequency of replacement, which will reduce the efficiency of the reinforcement. However, if the finishing precision is not 1, the stress concentration + or the strain concentration will occur after the joining, and the crack will occur and the strength of the molten joint will be lowered, so that the efficiency of the splicing operation will be deteriorated. It is still necessary to apply high precision finishing to the garret. > According to the above findings, for the optimum shape and size of the fillet portion of the τ-type steel probe 4 used as the T longitudinal rib, the following conclusion is obtained: by filling the corner of the circular arc-shaped fillet portion It is preferable to set it to IGmm or less and 8mm or less, so that the strength of the joint of the refining joint will not be reduced due to the poor edging of the scalloped σ, and the work efficiency of the fan-shaped slit machining can be greatly improved. It is necessary to apply a bending process to form a shape along the hull. If the fill angle r is small, the cross section of the fillet portion is also small, and the bending workability can be improved. Therefore, when bending the T longitudinal rib, Work efficiency will also increase. The present invention has been completed on the basis of such findings, and the gist thereof is as follows. (1) A T-shaped steel having a web height of 15 mm or more and having no welded portion, characterized in that a fillet portion formed at a joint portion between the web and the flap is formed in a cross-sectional shape in the width direction of the steel section. The arc is in contact with the web and the wing, and the radius rl of the arc is 2 to 10 mm. 098120384 10 kinds of τ steels, wherein in the τ steel of the above (1), the height of the web is twice or more the width of the flap. () A type of steel, in the above-mentioned (1) or (2) tantalum steel, hot rolled to produce a niobium steel. It is better to apply hot rolling to the material steel sheet using the universal Wei dryer, and to process the T-shaped steel. In the τ type steel according to any one of the above (1) to (3), the radius of the arc of the fillet portion on the web surface side is different over the entire length of the steel. In the τ steel of any one of the above (1) to (4), the cross-sectional shape of the corner portion of the wing's end in the width direction of the steel is arc-shaped, and the radius of the circular arc is 2 mm. the above. (6) A steel of the type Τ, which is a T-shaped steel for hull structure, in the τ steel of any of the above (1) to (5). (Effect of the Invention) The T-shaped steel of the present month is optimized to form a fillet at the joint portion between the web and the flap. The shape and size of the cloth are reduced by the fill angle R compared to the conventional τ-shaped steel. When this month is used as the τ vertical rib and the joint between the ends is welded, the strength of the fine jade joint without the fine notch processing is reduced, and the operation of the fan-shaped slit can be greatly improved. When the τ longitudinal rib is bent and formed along the shape of the hull, it also has the effect of improving the bending workability. Therefore, it is suitable for τ type steel for hull construction, especially 098120384 11 1364330 for τ longitudinal ribs. [Embodiment] Fig. 1 shows a cross-sectional shape of a profiled steel in the width direction of a profiled steel of the present invention, for example, an f-based blade, a W-shaped web, a joint portion of a fi-web and a flap f, that is, formed by The fillet portion of the corner portion formed by the web w and the flap f. Further, the A-type web height, the B-system blade width, the u-system web thickness f, and the t2-based blade thickness of the size are shown. In addition, the radius of the arc of the rl-filled corner portion fi (circular radius of the section in the width direction of the section steel)' r2 is the radius of the arc of the corner portion on the inner surface side of the tip end of the blade (the radius of the arc of the section in the width direction of the section), "3 The radius of the round fox at the corner of the outer side of the front end of the wing (the radius of the arc of the section in the width direction of the section). In the T-shaped steel having a height of Aitl 5 〇 mm or more and having no splicing portion, the cross-sectional shape of the fillet $pfi in the width direction of the steel is an arc shape that is in contact with the web w and the flap f. And the arc radius: 丨 (hereinafter also referred to as "fill angle R") is set to 2 to l 〇 mm. There is no welded joint, that is, a welded steel which is not assembled by thick plate fusion, but a so-called cut Τ steel obtained by cutting the web of the Η-shaped steel obtained by hot rolling into two (two divisions) may be used. However, in terms of productivity, or the addition of the step of cutting the web to half, the cost is increased by the hot rolling. The monthly rolling τ steel is light n, and the construction is the same. The thickness is 098120384 12 1364330 except for the corners and the front end of the wing. The effect of the present invention is obtained by specifying the fill angle r. Therefore, the web height Α of the τ-shaped steel and the width of the blade are arbitrary. However, when a member for hull construction is used, it is preferable that the web height A is twice or more the width B of the blade. The combination of web height A and wing width B can be selected as: 250mmxl〇〇mm, 300mmxl00mm, 300mmxl25mm, 350mm><125mm, 400mmxl25mm, 500mmxl50mm, 600mmxl50mm, 700mmxl50mm, 800mmx 150mm, etc. The combination of the web thickness tl and the flap thickness t2 is also arbitrary. For example, the thickness of the cut T-shaped steel (the thickness of the web of the normalized Η steel and the thickness of the wing) can be selected. When the member for the hull structure is used, the thickness t2 of the preferred wing is greater than the thickness tl of the web. Further, the general web height A is 10 times or less the width β of the flap. In the T-shaped steel of the present invention, the fillet angle R (the radius of the arc!·1) of the fillet portion fi is not related to the width of the web and the width of the flap, and is set to 2 to 10 mm, and is set to 2 to 8 mm. good. As described above, when the ends of the T longitudinal ribs are joined and joined, the bevel joints are welded after the beveled joints, but in order to avoid the material deterioration and the weld defects due to the weld line connection between the flaps and the webs. A sector notch is formed on a portion of the web and the corner portion of the adjoining flap, and a fan-shaped notch is cut out (see Fig. 11). If the fillet angle R exceeds 10 mm, the volume and width of the fillet portion become excessively large. Therefore, in order to avoid poor finishing such as a decrease in the strength of the fusion bonded portion during the processing of the scalloping, the finishing step is included. The efficiency of the scalloping process is reduced, and when the T longitudinal rib is bent into the shape of the ship hull 098120384 1364330, the bending workability is also lowered. Table 1 shows the cross-sectional area of the fillet portion of the T-shaped steel with a fill angle R of 13 mm to 2 mm and the fillet width. Wherein, the cross-sectional area of the fill angle refers to the front view on the right side of FIG. 11 or the cross-sectional area of the one-side fillet portion fi (excluding the web portion and the flap portion) of FIG. 1 , when the fill angle R is zero, the web and the flap When a right angle is formed, the cross-sectional area of the fillet is zero. In addition, the fillet width refers to the length from the one-side fillet portion fi to the opposite side fillet portion of the web. According to Table 1, it can be seen that compared with the fill angle R of 13 mm (the minimum fill angle R of the conventional cut Τ steel), if the fill angle R is reduced to l〇mm, the cross-sectional area of the fillet portion is reduced by 41%, and the fill angle is wide. Reduced by 17%. If the cross-sectional area and width of the fillet portion to be removed in the scalloping process are reduced to such an extent, the efficiency of the fan-shaped notch processing including the finishing step is extremely effective. Moreover, if the fill angle R is reduced to 8 mm, the cross-sectional area of the fillet portion is reduced by 62% and the fillet width is reduced by 28% compared to the fillet angle R. If the fill angle R is further reduced to 5 mm, the same is true. The cross-sectional area of the fillet is reduced by 85% and the fillet width is reduced by 44% for greater effect. [Table 1] Fillet angle R (mm) Fillet cross-sectional area (mm2) Cross-sectional area is wider than fillet angle (mm) Fillet width ratio 13 36.27 1.000 36 1.000 10 21.46 0.592 30 0.833 8 13.73 0.379 26 0.722 5 5.37 0.148 20 0.556 2 0.86 0.024 14 0.389 *The case where the thickness of the web is l〇mm 098120384 14 1364330 In addition, the τ-shaped steel of the present invention is manufactured by a manufacturing method different from the conventional technique, and the fillet R can be formed. L〇mm or less, but such a manufacturing method is still difficult to form the fillet R to less than 2 mm. Generally, when the T-shaped steel of the present invention is produced by hot rolling, a universal rough rolling mill and a universal fine rolling mill are used, and when such a utilization is utilized The rolling mill has a rolling delay, and the corner portion of the roll of the horizontal roll is rolled and formed into a corner portion. Therefore, if the roll corner R of the corner portion of the roll is reduced, the fill angle R can be reduced, as described in the above Patent Document 3, Simply narrowing the roll corner & may occur. (4) The contact condition between the roller part and the inner surface of the wing tends to be severe, and the scar on the inner surface of the wing is caused by the keloid on the inner surface of the wing. Sword $ this μ ' Appropriate quality product type Steel, (b) The wear of the roller of the spare part becomes larger, except that the corner of the roll may also break the arc shape k, the arc and other problems, _ _ _ _ _ _ _ _ _ _ The result of forming a small-sized fillet t-reducing roll corner R' as in the present invention is also incapable of being relative to this. The present inventors have chosen to delay the rolling of the machine, and the specific 9 is closed by the universal rough sewing machine and the universal fine roll. The manufacturing method is described in detail later.) ^Brushing lubricant (bbricam), etc. (there is a small size, so the ruler of the fillet R is rolled even if the horizontal corner of the roll is reduced.) In an hour, it is still possible to not reach the corner of the roller where the horizontal roller is not reached. However, even with this manufacturing method,
症痕瑕痴，且= ’仍無法防止翼板内面發生 乾進行T型鋼的量產、。^較大’導致實質上無法利用熱 098120384 本發明的T型鋼便將填角R 1364330 下限設為2mm。 基於以上理由，本發明的T型鋼將填角R的大小設為 2〜10mm。 填角部在型鋼寬度方向上的截面形狀（圖U中右側的截 面形狀）’形成與腹板及翼板相接的圓弧狀。此處所謂「圓 弧狀」不必為嚴格精確的圓弧狀，但不包括在熔接T型鋼、 或以角落粗糙之水平輥所獲得的軋延τ型鋼 '切割τ型鋼 中所見明顯偏離圓弧的情況。最好將從半徑rl圓弧的偏離 收束於rl之土20%範圍内者定義為半徑ri的圓弧狀。 本發明的T型鋼在圖1中左右填角部fi(腹板二面側的填 角部）的填角R，最好分別跨越型鋼全長而呈一定。若以熱 軋製造本發明的T型鋼，因為左右填角部fi以萬能輥軋機 的水平輥輥角落部軋延、成形，因而可獲得跨越全長而呈相 同半徑的填角部fi。即，不會有如熔接τ型鋼的接合部般在 長邊方向呈不均勻之形狀，而可獲得均勻的填角部fi，故具 有構件。σ質管理較為谷易的優點。此處，若填角r的變異 在±20%範圍内，則跨越型鋼全長均可視為一定。 再者，本發明的τ型鋼為能確保塗裝的完美(perfecti〇n)， 翼板前端之祕部（翼板前端内面側的角落部與翼板前端外 面側的角落部合計4處角落部），在型鋼寬度方向上的截面 形狀最好呈圓弧狀，且圓狐半徑r2、r3(參照圖⑽2麵以 上。r2、r3的上限並無需特別限制，即使例如達翼板厚度u 098120384 1364330 的〆半，仍不會構成問題。該圓孤亦容許稱微變形。 其次’說明獲付本發明τ型銅(軋延τ型鋼)的較佳製造方 法。 •.該製造方法使用萬能粗挺札機與萬能精輥軋機等，以熱軋 製造Τ型鋼。具體而言’例如將以開胚軋延機_ak d〇wn mill)等所獲得T型鋼片，依序❹第丨萬能粗減機、邊 軋機、第2萬能粗報軋機、萬能精棍札機施行乳延，而製得 • T_。此種使用萬能_乾機與萬能精機的製造方法 •中，以萬能輥軋機的水平報之親角落部乾延、成形填角部 在此’在將萬能粗親軋機與萬能精親軋機的水平親棍角落 R(半徑），設為可成形出欲製造之本發明Τ型鋼填角 R(2〜H)·)的尺寸後，於軋延中對萬能粗輥軋機及萬 軋機朝水平輥魏角落部，從潤滑油供職置嘴射出軋延潤 滑油（熱軋用潤滑油）’而潤滑水平輥角落部。此時，若對翼 板内面亦喷射軋延潤滑油，便可更加提升防止范痕之效果， 並可更進-步有效物止㈣落部與翼油面產生症痕。 再者，親角落R越小㈣落部的溫度越容易上升導致 輥越容易發生損傷’作為對此項問題輯策，至少在萬妒粗 輥軋機的軋延出口側配置水平㈣落料科卻水嘴时 嘴，從該冷卻水翁噴嘴朝水平㈣落料射出冷卻水，而 強化輕㈣部的冷卻’藉此可防均溫度過度上升，以防止 098120384 17 1364330 輥遭受損傷。 利用如上述製造方法，可製得本發明填角R較小的τ型 鋼。另外，本發明τ型鋼的製造方法，當然並不僅侷限於 上述製造方法。 ' 依如上所述，本發明τ型鋼最適用為船體構造用，尤其 使用為τ縱肋材’而在橋樑、建築等頜域中亦可使用為構 造材等。 [實施例1] 本發明T型鋼（船體構造用τ型鋼）截面尺寸之一例，如表 2、表3所示。基準的外形尺寸（參照圖丨），腹板高度a為 300mm、翼板寬度b為i25mm。此外，腹板厚度tl係 9〜12mm、翼板厚度t2係16〜25mm。 表2所示係内部尺寸(inside dimensi〇n) 一定的製品，其腹 板高度A扣減掉翼板厚度〇後的長度(腹板前端距翼板内面 的長度），與翼板寬度B扣減掉腹板厚度ti後的長度呈一鲁 定，隨腹板厚度tl與翼板厚度t2的變化，腹板高度a與翼 板寬度B會有數宅米的差異。此種内部尺寸一定的製品系 列，藉由在後述圖6所示第2萬能粗輥軋機4中將腹板前端 側的立輥(vertical r〇ll)42b與水平輥4丨a、4丨b的間隔設為一 定之下乾延’即可製造。此外’表3所示係外型尺寸(〇utside dimension)—定之製品，其腹板高度A與翼板寬度B呈一 定’即使腹板厚度tl與翼板厚度t2有變化，腹板高度a與 098120384 18 1364330 翼板寬度B仍呈一定。此種外型尺寸一定的製品系列，藉 由在後述圖6所示第2萬能粗輥軋機4中，調整腹板前端侧 的立輥42b與水平輥41a、41b的間隔，使被軋延材的腹板 - 而度呈一定而乾延，即可製造。 另外’表2、表3中各部位的r尺寸，填角部的圓弧半徑 rl(填角R)為8mm、翼板前端内面側角落部的圓弧半徑r2 為5mm、翼板前端外面侧角落部的圓弧半徑r3為3mm。 • 將表2所示本發明T型鋼的戴面特性，與習知不等邊不 等厚角鋼(NAB)相比較，其結果如圖2所示。船體構造中， 型鋼主要為補強厚板而使用，在船體設計時’與型鋼同受應 力作用的厚板部分，亦視為型鋼之一部分。所以，在考慮型 鋼的截面性能時，接合某寬度之板的截面係數極為重要，因 而此處以附有寬61 Ommx厚15mm之板的截面係數為指標。 所謂「附板截面係數」，指對在T型鋼的翼板外面接合有既 ® 定面積之板的截面，計算出通過重心之轴的截面二次矩，再 將該值除以該通過重心之軸距截面最遠處之距離所獲得的 值。 如圖2所示，腹板高度A為300mm、翼板寬度B為125mm . 的T型鋼之附板截面係數，可獲得接近於300mmx90mm、 350mmxl00mm、400mmxl00mm之不等邊不等厚角鋼的性 能，因此以300mmxl25mm之T型鋼1個系列即可涵蓋 300mm><90mm、350mmx 100mm、400mmx 100mm 之不等邊 098120384 19 1364330 不等厚角鋼等3個系列。 [表2] 系列 戴面尺寸(mm) A B tl t2 rl r2 r3 300x125 300 124 9 16 8 5 3 303 124 9 19 8 5 3 300 125 10 16 8 5 3 303 125 10 19 8 5 3 303 126 11 19 8 5 3 306 126 11 22 8 5 3 306 127 12 22 8 5 3 309 127 12 25 8 5 3 [表3] 系列 截面尺寸（mm) A B tl t2 rl r2 r3 300x125 300 124 9 16 8 5 3 303 124 9 19 8 5 3 300 125 10 16 8 5 3 303 125 10 19 8 5 3 303 126 11 19 8 5 3 306 126 11 22 8 5 3 306 127 12 22 8 5 3 309 127 12 25 8 5 3 以熱軋製造本發明的T型鋼（軋延T型鋼）之例如下所述。 其中，設備構造、軋延機構造、輥形狀、各尺寸等均僅為一 例，本發明並不僅侷限於該等。 使用圖3所示幸L延設備，從具有厚250mm、寬310mm之 長方形截面的鋼胚，軋延出目標尺寸為腹板高度300mm、 翼板寬度l〇〇mm、腹板厚度9mm、翼板厚度16mm的T型 098120384 20 136433.0 以開胚軋延機1軋延成戴面略呈τ形狀的τ型鋼片。該τ 型鋼片之腹板厚度40mm、翼板厚度75mm、腹板^戶 375mm、翼板寬度130mm。 接著，利用由第1萬能粗輥軋機2、邊軋機3、及第2萬 能粗輥軋機4相靠近配置所成的軋延設備列對該τ型鋼片 施行5道往復軋延，而壓縮T型鋼片的腹板與翼板（中間軋 延步驟6)。 在該中間軋延步驟中，首先’於第i萬能粗輥軋機2中， 如圖4所示，利用水平輥21a、21b跨腹板w之全長而壓縮 其板厚方向’再利用立輥22a與水平輥21a、21b側面壓縮 翼板f之板厚方向。接著，於邊軋機3中，如圖5所示，在 水平輥31a、31b的大徑輥部33間誘導腹板w，而利用小徑 輥部32將翼板f端面朝翼板寬度方向壓縮。接著，於第2 萬月b粗親軋機4中，如圖6所示，利用水平輥41 a、41 b將 腹板w之大部分朝其板厚方向壓縮，且利用立輥42a與水 平親41a、41b側面將翼板f朝板厚方向壓縮，更利用立輥 42b將腹板w前端部朝腹板高度方向壓縮，藉此調整腹板之 高度。 將依此藉由中間軋延步驟所獲得的T型鋼，利用萬能精 輥軋機5精軋成為製品尺寸。在該萬能精輥軋機5中，如圖 7所示，利用水平輥51a、5比將腹板w全長朝其板厚方向 小幅壓縮，並利用立輥52a與水平輥51a、51b侧面將翼板 098120384 22 f的傾斜整形為垂直。The symptoms are ridiculous, and = ‘ still cannot prevent the inner surface of the wing from drying for mass production of T-shaped steel. ^Larger' causes substantially no heat to be utilized 098120384 The T-shaped steel of the present invention sets the lower limit of the fillet R 1364330 to 2 mm. For the above reasons, the T-shaped steel of the present invention has a fill angle R of 2 to 10 mm. The cross-sectional shape of the fillet portion in the width direction of the steel (the cross-sectional shape on the right side in Fig. U) is formed in an arc shape that is in contact with the web and the flap. The so-called "arc shape" does not have to be a strictly precise arc shape, but it does not include a significant deviation from the arc in the rolled T-shaped steel 'cutting τ steel obtained from the welded T-shaped steel or the horizontally rough horizontal roller. Happening. It is preferable to define the deviation from the radius of the radius rl into the range of 20% of the soil of rl as the arc of the radius ri. In the T-shaped steel of the present invention, the fill angle R of the right and left corner filling portions fi (filled portions on the two sides of the web) in Fig. 1 is preferably constant across the entire length of the steel. When the T-shaped steel of the present invention is produced by hot rolling, the right and left corner fill portions fi are rolled and formed at the corner portions of the horizontal rolls of the universal roll mill, so that the fillet portions fi having the same radius across the entire length can be obtained. In other words, there is no uneven shape in the longitudinal direction as in the joint portion of the welded τ-shaped steel, and a uniform fillet portion fi can be obtained, so that it has a member. σ quality management is more advantageous than Gu Yi. Here, if the variation of the fill angle r is within ±20%, the full length of the spanned steel can be regarded as constant. Further, the τ-shaped steel of the present invention is capable of ensuring the perfection of the coating, and the secret portion of the tip end of the flap (the corner portion on the inner surface side of the flap front end and the corner portion on the outer surface side of the flap front end are totaled at four corner portions The cross-sectional shape in the width direction of the steel is preferably arc-shaped, and the radius of the round fox is r2 and r3 (refer to the surface of Fig. (10) 2 or more. The upper limit of r2 and r3 is not particularly limited, even if, for example, the thickness of the wing is u 098120384 1364330 The second half will still not pose a problem. The round shape also allows micro-deformation. Next, it describes the preferred manufacturing method for the τ-type copper (rolling τ-shaped steel) of the present invention. • The manufacturing method uses universal roughening In the case of the machine and the universal fine rolling mill, hot-rolled steel is used for the production of Τ-shaped steel. Specifically, for example, the T-shaped steel sheet obtained by the _ak d〇wn mill, etc., is sequentially reduced. The machine, the side mill, the second universal roughing mill, and the universal fine stick machine are used to implement the milk extension, and the T_ is obtained. In the use of the omnipotent_dry machine and the universal fine machine manufacturing method, the level of the universal roll mill is reported to the pro-corner dry section, and the forming fillet is here at the level of the universal rough rolling mill and the universal fine rolling mill. The pro-stick corner R (radius) is set to the size of the Τ-type steel fillet R (2~H)·· which can be manufactured according to the invention, and the universal rough roll mill and the 10,000-roll mill are horizontally rolled in the rolling process. In the corner part, the rolling lubricant (hot lubricating oil) is injected from the lubricating oil supply nozzle to lubricate the corner portion of the horizontal roller. At this time, if the inner surface of the wing is also sprayed with the rolling lubricant, the effect of preventing the flaw can be further enhanced, and the effect of the (4) falling portion and the wing oil surface can be further improved. Furthermore, the smaller the pro-corner R is. (4) The temperature of the falling part is more likely to rise, resulting in the more likely the roll is damaged. As a solution to this problem, at least on the rolling exit side of the rolling mill, the level is placed. At the mouth of the nozzle, the cooling water is discharged from the cooling water nozzle toward the horizontal (four), and the cooling of the light (four) portion is strengthened, thereby preventing the temperature from rising excessively to prevent the 098120384 17 1364330 roller from being damaged. With the above production method, a τ-shaped steel having a small fillet angle R of the present invention can be obtained. Further, the method for producing the τ-shaped steel of the present invention is of course not limited to the above-described production method. As described above, the τ-shaped steel of the present invention is most suitably used for hull construction, and is particularly used as a τ vertical rib ‘, and can also be used as a structural material in a jaw region such as a bridge or a building. [Example 1] An example of the cross-sectional dimension of the T-shaped steel (the τ-shaped steel for hull structure) of the present invention is shown in Table 2 and Table 3. The outer dimensions of the reference (see Figure 丨), the web height a is 300 mm, and the wing width b is i25 mm. Further, the web thickness tl is 9 to 12 mm, and the thickness t2 of the blade is 16 to 25 mm. Table 2 shows the inner dimensions (inside dimensi〇n) of a certain product, the web height A is deducted from the thickness of the wing 〇 (the length of the web front from the inner surface of the wing), and the width of the flap B The length after the thickness ti of the web is reduced is abundance. With the thickness of the web tl and the thickness t2 of the flap, the height a of the web and the width B of the flap may differ from each other. Such a product series having a constant internal size is provided with a vertical roller 42b on the front end side of the web and horizontal rollers 4a, 4b in the second universal roughing mill 4 shown in Fig. 6 which will be described later. The interval can be made by setting it to a certain length. In addition, the 〇utside dimension, which is shown in Table 3, has a web height A and a wing width B which are constant 'even if the web thickness tl and the wing thickness t2 vary, the web height a and 098120384 18 1364330 Wing width B is still constant. In the second product rough roll mill 4 shown in FIG. 6 described later, the distance between the vertical rolls 42b on the front end side of the web and the horizontal rolls 41a and 41b is adjusted to obtain a rolled product. The web - while the degree is constant and dry, can be manufactured. In addition, the r dimension of each part in Table 2 and Table 3, the arc radius rl (filler angle R) of the fillet portion is 8 mm, and the arc radius r2 of the inner side corner portion of the tip end of the blade is 5 mm, and the outer side of the tip end of the blade The arc radius r3 of the corner portion is 3 mm. • Comparing the wearing characteristics of the T-shaped steel of the present invention shown in Table 2 with the conventional unequal thickness angle steel (NAB), the results are shown in Fig. 2. In the hull structure, the section steel is mainly used to reinforce the thick plate. In the design of the hull, the part of the slab that is subjected to the stress of the section steel is also considered as one part of the section steel. Therefore, when considering the cross-sectional properties of steel, it is extremely important to join the section coefficient of a plate of a certain width. Therefore, the section coefficient of a plate having a width of 61 mm and a thickness of 15 mm is used as an index. The "attachment section coefficient" refers to a section of a plate to which a predetermined area is joined to the outside of a wing of a T-shaped steel, and the second moment of the section passing through the axis of the center of gravity is calculated, and the value is divided by the center of gravity. The value obtained by the distance from the farthest distance of the wheelbase section. As shown in Fig. 2, the web height A is 300 mm and the wing width B is 125 mm. The section coefficient of the T-shaped steel plate can obtain the performance of the unequal-angled angle steel which is close to 300mmx90mm, 350mmx100mm and 400mmx100mm. One series of 300mmxl25mm T-shaped steel can cover 300mm><90mm, 350mmx 100mm, 400mmx 100mm inequality 098120384 19 1364330 3 series including unequal angle steel. [Table 2] Series wearing size (mm) AB tl t2 rl r2 r3 300x125 300 124 9 16 8 5 3 303 124 9 19 8 5 3 300 125 10 16 8 5 3 303 125 10 19 8 5 3 303 126 11 19 8 5 3 306 126 11 22 8 5 3 306 127 12 22 8 5 3 309 127 12 25 8 5 3 [Table 3] Series section dimensions (mm) AB tl t2 rl r2 r3 300x125 300 124 9 16 8 5 3 303 124 9 19 8 5 3 300 125 10 16 8 5 3 303 125 10 19 8 5 3 303 126 11 19 8 5 3 306 126 11 22 8 5 3 306 127 12 22 8 5 3 309 127 12 25 8 5 3 The production of the T-shaped steel (rolled T-shaped steel) of the present invention is as follows. Among them, the equipment structure, the structure of the rolling mill, the shape of the rolls, the dimensions, and the like are only one example, and the present invention is not limited to these. Using the lucky extension device shown in Fig. 3, from a steel embryo having a rectangular cross section of 250 mm thick and 310 mm wide, the target size is 300 mm, the width of the web is 10 mm, the thickness of the web is 9 mm, and the flap is rolled. The T-shaped 098120384 20 136433.0 having a thickness of 16 mm is rolled into a τ-shaped steel sheet having a slightly zigzag shape by the open rolling mill 1 . The τ-shaped steel sheet has a web thickness of 40 mm, a flap thickness of 75 mm, a web of 375 mm, and a flap width of 130 mm. Next, five-way reciprocating rolling is performed on the τ-shaped steel sheet by the rolling equipment row formed by the first universal rough rolling mill 2, the side rolling mill 3, and the second universal rough rolling mill 4, and the T-shaped steel is compressed. The web of the sheet and the flap (intermediate rolling step 6). In the intermediate rolling step, first, in the i-th rough roll mill 2, as shown in FIG. 4, the horizontal rolls 21a and 21b are used to compress the thickness direction of the web w by the entire length of the web w. The side faces of the horizontal rollers 21a and 21b compress the thickness direction of the flap f. Next, in the edge rolling mill 3, as shown in Fig. 5, the web w is induced between the large-diameter roller portions 33 of the horizontal rollers 31a and 31b, and the end surface of the flap f is oriented toward the width of the flap by the small-diameter roller portion 32. compression. Next, in the second month b rough rolling mill 4, as shown in Fig. 6, most of the web w is compressed in the thickness direction by the horizontal rolls 41a, 41b, and the vertical roller 42a is used to horizontally The side surfaces 41a and 41b compress the flap f in the thickness direction, and the front end portion of the web w is compressed toward the web height by the vertical roller 42b, thereby adjusting the height of the web. The T-shaped steel obtained by the intermediate rolling step is then subjected to finish rolling using a universal fine rolling mill 5 to become a product size. In the universal fine rolling mill 5, as shown in Fig. 7, the horizontal rolls 51a, 5 are used to compress the entire length of the web w in the thickness direction thereof, and the flaps are formed by the side rollers of the vertical rolls 52a and the horizontal rolls 51a, 51b. 098120384 22 f is tilted to be vertical.
及萬2所述—連串軋延步驟所使㈣萬能_軋機2、4 在2 ::輥軋機5巾，就水平輥角落部咖落R(半徑)， 設^ 4能吨軋機2、4中設為9軸，萬能精減機5則 所^ _。且，在水平輕角落部的附近設置如圖8A、圖8B 角Ι::=Γ應裝置x，從該潤滑油供應裝置x朝水平輥 角各抑應軋延卿油（熱制麟油And the Wan 2 described - a series of rolling steps to make (four) universal _ rolling mill 2, 4 in the 2: 2 rolling mill 5 towel, on the horizontal roller corners R (radius), set ^ 4 energy tons mill 2, 4 Set to 9 axes, the universal reduction machine 5 is ^ _. Moreover, in the vicinity of the horizontal light corner portion, as shown in Fig. 8A, Fig. 8B, the angle:: = Γ 装置 device x, from the lubricating oil supply device x toward the horizontal roll angle, respectively, the rolling of the oil (heat-made oil)
所示係在筮！话从 mShown in the 筮! Words from m
帛1萬月匕粗輕軋機2中設置潤滑油供應裝置χ的 ^圖8Β係正視圖’圖8Α係水平輥的侧視圖。因為以 2 口萬能粗輕軋機2、4施行往復札延，因而在札延機前面（上 游側)與後面（下游側)分別設置潤滑油供應裝置X，並從成為 軋延入π側的潤滑油供應裝置χ喷射出軋延潤滑油，在乳 L潤/月油附著於水平報角落部上的狀態下軋延。此外，在萬 匕精親軋機5中，因為僅施行1道軋延，因而潤滑油供應裝 置X僅6又置於軋延機的前面（上游侧），如同萬能粗輥軋機 般，在軋延入口側喷射軋延潤滑油，同時軋延。依此一邊供 應軋延潤滑油—邊軋延的結果，親與翼板内©不會發生症 痕，翼板内面不會有疤痕瑕疵，可軋延出具有良好表面的製 品。此外，在經軋延出1〇〇〇t〇n以上的製品後，輥角落部仍 不會有明顯的磨才員，截至最後為止幾乎均可軋延出相同填角 R的製品。熱軋用潤滑油可毫無問題地使用通常熱軋鋼材等 時所使用物質。本例使用大同化學工業製SH-105，可毫無 098120384 23 問題地軋延出製品。 另方面，在未供給軋延濶滑油的情況下軋延，則翼板内 面會發生泡痕瑕疵’無法製造出品質完好的製品。 、八人使用圖3所示軋延設備，製造出與上述製造例同尺 :的T型鋼’即填角部的圓弧半徑fl(填角R)為5mm之製 on ° 水平_落部的輥肖落R(半徑），在2台萬能粗減機設 為，萬能精輥軋機則設為5丽。如同上述製造例，在鲁 萬Hi軋機2、4、5的水平輥角落部從潤滑油供應裝置 X噴射出軋延潤滑油的情況下軋延’結果雖可防止水平報與 翼板内面發生鎌，但經軋延出15GtQn左右的製品後因 為2台萬能粗輥軋機2、4的水平輥角落部出現龜裂，因而 乾延中斷。此龜裂的原因可認為因則落部的溫度過度上升 所致’因而對策便是在萬能粗輥軋機2、4鄰接潤滑油供應 裝置X位置處，設置噴射出冷卻水的冷卻水噴射喷嘴，藉 籲 由從該冷卻水噴射噴嘴朝軋延出口側的水平輥角落部噴射 出冷卻水，可將水冷接觸到被軋延材後的水平輥角落部。 即，相對於水平輥角落部，在軋延入口側噴射軋延潤滑油， 而在軋延出口側喷射冷卻水，在此情況下軋延。結果，可確 認即使已軋延出約l〇〇〇ton填角部圓弧半徑rl為5mm的製 品’水平輥角落部仍不會發生龜裂。 (產業上之可利用性） 098120384 24 1364330 本發明的τ型鋼相較於習知的τ型鋼，因為填角部呈圓 弧狀且填角R經適當小徑化，因而使用作為τ縱肋材而在 - 端部間施行熔接接合時’不會因扇形缺口加工之精加工不良 .•而導致熔接接合部強度降低，可大幅提升扇形缺口加工的作 業效率。此外，使用本發明的τ型鋼，在將τ縱肋材彎曲 加工成沿著船殼之形狀時，亦可提升彎曲加工性。 【圖式簡單說明】 • 圖1為本發明之τ型鋼的截面形狀一例說明圖。 圖2為表2所示本發明Τ型鋼的附板截面係數(m〇dulus〇f • secti〇n with welded plate)與製品單位重量的關係，與習知不 等邊不等厚角鋼相比較的圖。 圖3為供製造本發明之τ型鋼的軋延設備一例之說明圖。 圖4為圖3所示軋延設備的第i萬能粗輥軋機之輥構造示 思正視圖。 ❿® 5為圖3所示軋延設備的邊軋機(edger _)之報構造示 意正視圖。 圖6為圖3所示軋延設備的第2萬能粗輥軋機之輥構造示 思正視圖。 -、圖7為圖3所示軋延減的萬能純軋機之輥構造示意玉 _ 視圖。 圖8A為在圖4所示萬能粗親軋機的水平輕角落部附近， 設置潤滑油供應裝置X狀態的水平輥侧視圖。 098120384 25 1364330 圖8B為在圖4所示萬能粗輥軋機的水平輥角落部附近， 設置潤滑油供應裝置X之狀態的正視圖。 圖9為不等邊不等厚角鋼的截面形狀一例之說明圖。 圖10為T型鋼的大略截面形狀一例之說明圖。 圖11為對T縱肋材熔接接合其端部間時的斜切之一例， T縱肋材端部的側視圖（左側）與正視圖（右側）。 【主要元件符號說明】 1 開胚軋延機 2 第1萬能粗輥軋機 3 邊軋機 4 第2萬能粗輥軋機 5 萬能精輥軋機 6 中間軋延步驟 21a ' 21b 水平輥 22a、22b 立輥 31a、31b 水平輥 32 小徑輥部 33 大徑輥部 41a、41b 水平輥 42a、42b 立輥 51a、51b 水平輥 52a ' 52b 立輥 098120384 26帛 帛 帛 匕 润滑油 润滑油 润滑油 润滑油 润滑油 润滑油 润滑油 润滑油 润滑油 润滑油 润滑油 润滑油 润滑油 润滑油 润滑油 润滑油 润滑油 润滑油 润滑油 润滑油 润滑油 润滑油 润滑油 润滑油 润滑油 润滑油 润滑油 润滑油 润滑油 润滑油 润滑油Since the two-way universal roughing mills 2 and 4 perform the reciprocating zigzag, the lubricating oil supply device X is disposed in front of the front (upstream side) and the rear (downstream side), and the lubrication is rolled into the π side. The oil supply device χ ejects the rolling lubricant, and rolls it in a state where the milk L/moon oil adheres to the corner portion of the horizontal report. In addition, in the Wanhao Jingjia rolling mill 5, since only one rolling is performed, the lubricating oil supply device X is only placed on the front side (upstream side) of the rolling mill, as in the case of a universal rough rolling mill, in rolling The inlet side spray rolls the lubricating oil while rolling. On the one hand, the rolling lubricant is supplied, and as a result of the rolling, the inside of the flap does not cause a flaw, and there is no keloid on the inner surface of the flap, and the product having a good surface can be rolled and rolled. In addition, after rolling the product of 1 〇〇〇t〇n or more, there is still no obvious wearer at the corner of the roll, and the product of the same fillet R can be rolled up almost until the end. The lubricating oil for hot rolling can use a material which is usually used for hot-rolled steel or the like without any problem. In this case, the SH-105 manufactured by Datong Chemical Industry Co., Ltd. can be used to roll out the product without any problem. On the other hand, if the rolling is carried out without rolling the rolling oil, a bubble plaque will occur on the inner surface of the flap, and it is impossible to produce a product of good quality. Eight people used the rolling equipment shown in Fig. 3 to produce the same size as the above-mentioned manufacturing example: the T-shaped steel, that is, the arc radius fl (filled corner R) of the fillet portion is 5 mm on ° level _ falling portion Roller roll R (radius) is set to 2 sets for the universal roughing machine and 5 sets for the universal fine roll mill. As in the above-described manufacturing example, in the corner portion of the horizontal roller of the Luwan Hi rolling mills 2, 4, and 5, the rolling of the lubricating oil is ejected from the lubricating oil supply device X, and the result is that the horizontal report and the inner surface of the flap are prevented from occurring. However, after rolling out the product of about 15 GtQn, the crack occurred in the corner portion of the horizontal rolls of the two universal rough rolling mills 2 and 4, and the dry extension was interrupted. The reason for this crack is considered to be caused by an excessive rise in the temperature of the falling portion. Therefore, the countermeasure is to provide a cooling water spray nozzle that sprays the cooling water at the position of the universal rough rolling mill 2, 4 adjacent to the lubricating oil supply device X. The cooling water is sprayed from the cooling water spray nozzle toward the corner portion of the horizontal roll on the rolling outlet side, so that the water can be brought into cold contact with the corner portion of the horizontal roll after the rolled material. That is, the rolling lubricant is sprayed on the rolling inlet side with respect to the corner portion of the horizontal roll, and the cooling water is sprayed on the rolling outlet side, and in this case, rolling is performed. As a result, it was confirmed that cracks did not occur even in the corner portion of the horizontal roll of the product having a circular arc radius rl of about 5 mm. (Industrial Applicability) 098120384 24 1364330 The τ-shaped steel of the present invention is used as a τ vertical rib because the fillet portion has an arc shape and the fill angle R is appropriately reduced in diameter as compared with the conventional τ steel. When the fusion bonding is performed between the ends, it is not caused by the poor finishing of the scalloping process. The strength of the fusion bonded joint is lowered, and the work efficiency of the scalloping process can be greatly improved. Further, with the τ-shaped steel of the present invention, when the τ vertical rib is bent into a shape along the hull, the bending workability can be improved. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an explanatory view showing an example of a cross-sectional shape of a τ steel according to the present invention. Figure 2 is a graph showing the relationship between the section coefficient (m〇dulus〇f • secti〇n with welded plate) of the tantalum steel of the present invention shown in Table 2 and the unit weight of the product, compared with the conventional unequal thickness angle steel. Figure. Fig. 3 is an explanatory view showing an example of a rolling apparatus for producing a τ-shaped steel of the present invention. Fig. 4 is a front elevational view showing the roller structure of the i-th rough roll mill of the rolling apparatus shown in Fig. 3. ❿® 5 is a schematic front view of the structure of the edge mill (edger _) of the rolling equipment shown in Fig. 3. Fig. 6 is a front elevational view showing the roller structure of the second universal rough rolling mill of the rolling apparatus shown in Fig. 3. - Figure 7 is a schematic view of the roll configuration of the universal rolling mill shown in Figure 3. Fig. 8A is a side view of a horizontal roller in which the state of the lubricating oil supply device X is disposed in the vicinity of the horizontal light corner portion of the universal rough rolling mill shown in Fig. 4. 098120384 25 1364330 Fig. 8B is a front elevational view showing the state in which the lubricating oil supply device X is disposed in the vicinity of the corner portion of the horizontal roll of the universal rough rolling mill shown in Fig. 4. Fig. 9 is an explanatory view showing an example of a sectional shape of an unequal thickness angle steel. Fig. 10 is an explanatory view showing an example of a roughly sectional shape of a T-shaped steel. Fig. 11 is a side elevational view (left side) and a front view (right side) of the end portion of the T longitudinal rib when the T longitudinal rib is welded and joined between the ends thereof. [Main component symbol description] 1 Open blank rolling mill 2 First rough rolling mill 3 Side rolling mill 4 Second universal rough rolling mill 5 Universal fine rolling mill 6 Intermediate rolling step 21a ' 21b Horizontal roller 22a, 22b Vertical roller 31a 31b Horizontal roller 32 Small diameter roller portion 33 Large diameter roller portion 41a, 41b Horizontal roller 42a, 42b Vertical roller 51a, 51b Horizontal roller 52a ' 52b Vertical roller 098120384 26