200920537 九、發明說明： 【發明所屬之技術領域】 本發明係提供一種雙電極氣體金屬電弧銲接之方法及 其系統，尤指其技術上提供一種銲接方法及系统，該方法 及系統使用單一電源供應上下雙GMAW的銲搶同步銲接。 【先前技術】 單一的電源供應器結合兩個銲接電極，在丨998年有 發表篇文早’文章中提及利用單一的電源供應器結合兩 個銲接電極’其中上電極為鎢極氬弧銲（篇，一200920537 IX. Description of the Invention: [Technical Field] The present invention provides a two-electrode gas metal arc welding method and system thereof, and more particularly to a technically provided welding method and system using a single power supply The welding of the upper and lower double GMAW is synchronous welding. [Prior Art] A single power supply combines two welding electrodes. It was published in 丨 998. 'The article mentions the use of a single power supply to combine two welding electrodes. The upper electrode is tungsten argon arc welding. (Article, one
Tungsten Arc Welding)，而下電極為電漿電弧電極，因 其沒有溶化之電極使銲接深度有限制，所以只能實施在薄 板工作物的銲接。 於199Θ年發表之文章，俜利用i 早你利用早一的電源供 應盗，配合雙電極GTAW分別裝f _ & & & $ ^ 衣直於板件的兩側，並用立 Γ方式對6 0 6 1銘合金進行鲜接實驗，惟其板件採用立 式之銲接，其考慮因素與平銲/仰銲並不相同。 再就開槽形式，如果單面開槽將使溶填面積大幅 ，不利於快速銲接，也使得填 曰 ,Ε 叶自耗增加，及銲接時η 長，而如果以雙面開槽的方式，將 、曰 熔填面積大幅減小。 ’、一問題’使 是以，針對上述習知壯播 m “冓所存在之問題點 —種更具理想實用性之創新έ 仃開發 構’實消費者所殷切企盼， 亦係相關業者須努力研發突破之目標及方向。 有…’發明人本於多年從事相關產品之製造開發 5 200920537 與設計經驗，針對上述之目標，詳加設計與審慎評估後， 終得一確具實用性之本發明。 【發明内容】 欲解決之技術問題點：習知之電極分為消耗性電極及 非消耗性電極，如氬銲及電漿銲接之電極都是屬於非消耗 !·生電極’所以能夠熔填的效率較差，而且習知雖有使用單 電源供應系統之雙面銲接，但其非為使用雙弧氣體金屬 極電弧銲（GMAW，Gas Metal Arc Welding)，所以工作物 厚度仍然受限。 解決問題之技術特| 曰 八！叉电视軋菔金屬電弧 :Γ Γ方法及其系统’主要以單—電源供應系統供應氣體 金屬極電狐銲（GMAW)上電極及氣體金屬極電 = :::作物設有不對…㈣，鲜接時氣體金屬 銲電極採仰鲜在前，而氣體金屬極電弧 較佳之m 奸幻交冑仰如先舖底，如此可得 、接合品質，而厚板益須翻面, 增加多请A 予极…、肩翻面，也只需要在後續 夕道次平銲銲接即可解決。 對照先前技術之功效： 先‘技術有採平銲仰銲同步去 鎢極氩弧銲 ，/、採用上電極為 下電極為電漿電弧雷搞m 性電極，所υ $ 電極，因兩者皆為非消耗 所乂溶透深度及熔填效率受到在,丁 Α人 厚板銲挺 又W限制’不適合用在 。而本發明之平銲仰銲均採 (GMAW ) , ® 、 木用礼體金屬極電弧銲 屬於消耗性電極，可以开彡士 〇 且兼顧銲接祐φ ^成口口質良好之銲道， 攻率’而工作物可採不對 +對稱雙V型開槽，所以 6 200920537 厚板只須在銲接後；kΑ τ 、牡杆获傻增加多道次平銲銲接即可解步 板也可不用翻面之雙面銲接。 /、，所以厚 2.先前技術之工作物採用立式之雙 均為平銲之單面銲接，要或雙電極 大。而本發明雙面係為一平鋒而一仰銲，戶斤 差異不 異大，與立式雙面銲接明顯不同。 條件差 有關本發明所採用之技術、手段及其功 佳實施例並配合圖式哞细1^ 鉍舉一較 口叭孑細5兒明於后，相信本發 的、構造及特徵，去可ά夕/曰 述之目 田了由之侍一深入而具體的瞭 【實施方式】 參閱第一圖所示， 電弧銲接之方法及其系 包含有： 本發明係提供一種雙電極氣體金屬 統’所要達成其方法’裝置上至少 使用單-GMAW電源供應系統（丄〇 )，分接到 線機構（1 1 )、（ 1 2 )，提供平銲搶體（2 〇 )及仰銲 搶體（2 1 )正極電源，鲜接工作物（3 〇 )則接到單— :MAW電源供應系統（1 〇 )電源的負極，並利用氣體混 器（4 0 )及分流閥（4工）將混合氣體分別送至平銲 搶體（2 0 )及仰銲槍體（2 i )，以進行雙弧gmaw銲接 上述該鲜接過程中，得藉由示波器記錄電壓脈衝頻率 可作為銲接電性量測的重要工具，在電壓脈衝頻率的調 整上，可提供相當多的重要資訊。 上述該氣體可為氬氣及二氧化碳或混合氣體。 7 200920537 參閱第二圖路- η ψ 3jl r i* 不 發明係以平銲與仰銲雙槍同步進 订雙孤隹干接方式，以 開梓& -^ 在厚板件之工作物（3 〇)銲接時 開槽的s又叶將採用 的開槽形式進行，由於雙槍使用線 瓜並不相同，因此 φ a、加工成上大下小的雙V形式，其 中α和/5角為上下開样 為 曰的角度，a為平銲開槽的深度，b h咕 反7子口^ ’ t為工作物（3 〇 )板厚。 參閱第三圖所示，仰… 卩1于‘逼外觀的平整與熔深，除了 與达線速度有關外，平 .干搶體（2 0 )與仰銲搶體（2 1 弧間的距離（兩銲搶間的距離）（ 然平銲搶體（2 〇 ) a此 1 曰 月1J ’可使仰銲槍體（2 1 )仰銲嫁 沐效率較好，但仰錯捏、音 β -、<部有過熔低陷的問題發生，而仰 銲槍體之下電極在前的銲接方式’無過熔低陷的問題。第 三圖中之銲搶銲接方向（2 2)係朝箭頭方向。 在不影響仰鮮銲道外觀之條件下，將仰鲜能量增加， 使仰銲線峨〇.9mm，以增加仰銲搶體（2 "下電極 的仰銲能力’ a μ求仰銲銲冠外觀平整，t仰銲送線速 j設定在9cm/s日夺’兩弧間距在〇至—間皆可形成銲 尬外硯相當平整之銲道，此時根面深約為—肖，可達到 全溶透之目的。另者’將送線速度增加為，在“ 的根面深下也可使工作物（3 〇 )全炫透，即當根面深J 厚則送、線ϋ度也要配合增加。或者將所冑參數取其令間值 ，根面深減為1.5·，仰銲送線速度設為1〇cm/s，及兩弧 間距設為〇. 5mm ’也可達成全熔透之目的。 為了顧及仰銲銲道之外觀品質及增加上電極之熔深狀 8 200920537 況’適當的雙弧銲接距齙 ^ 距離將疋—個重要的變數，當進行栗 電源雙弧平/仰辉接過程中，可使用下電極在前的鲜接方 式，距離間隔約i〇cm〜lcm之間，可在峰保仰鲜鲜道外觀 品質平整及平銲熔深增加等優 寻便點下使成一較佳的銲道σ 質。， 口口 在上電極1.2_至下電極〇 9丽線徑的搭配下，為了 確保其仰鲜鲜道鲜冠外觀之平整，送線速度需維持在 1 5Cm/S~9cm/s，雖然增加仰銲送線速度可達到全炼透之目 的，但銲冠將不如仰銲送線速度在9cm/s時來得平整，可 透過開槽尺寸來解決此—問 J ^ 右要確保雙弧銲時，工作 物：^ 〇 )之穿透能力’根面深建議維持在間 ’較谷S在確保仰銲銲冠外觀平整之條件了，形成一全溶 透之銲道。 參閱第四圖所示，-次雙弧同步銲後即可達到一次熔 透之銲接品質，其已驗證係為成功可行者，如第四圖之試 片斷面（5 Q )所示’在單—電源供應系統之隱雙狐 銲接，除了可同時對工作物進行接合之外，並可確保其銲 道全炼透之目的。而其雙V槽的開槽方式，結合雙弧同步 平銲/仰銲1 了可大大降低料面積外，且在—次溶透 之優點下無須顧慮厚板炫融不良的銲接缺陷下，對於平銲 ㈣填的部份’可經由二次平焊來完成，此技術不需將板 件翻面，即可完成厚板對接，在製程效率上也將大幅提升 0 a 參閱第五圖所示’該單純只作平銲之工作物（3 0 9 200920537 )，其所需銲接的面積相當大，而以 其工作物（3 0 )銲接油面…發明之雙弧銲接， 討論’只作平銲之工作 而…熱變形方向 心只往薛接方向變形，而本發明之 方向 C 3 0 )銲後埶變形方 f接，/、工作物 吁便…、览化方向η2, n3分別朝平 形，如此# U^與仰&方向變 ^如此付以相互抵消而減少變形量。 J良 ，閱第/、圖所不，在雙弧同步銲接時， 規則的明滅交替，而此情況的發生 :電弧先呈現 結果來說明，在雙弧銲* σ以從波形的量測 電流將平分到平俨 電源供應器，其 + 4千#與仰鋅搶體電極’因 其電壓電流必定互相影響，從雙弧的波形量程中 ，其電墨波形間會呈現交替的脈衝現“如：:果中得知 ，當兩極的送線速度相近 /、圖所不） π 近％其波型也極為相似，而3 -明顯的交替脈衝現象，為了更進— 而呈現 特性，我們脾雔zr力日士 雙弧銲的銲接 字雙弧鋅時量測到的波形 電極送線逑厣沾決4 4’隨著仰銲 的週期皆變大之外ο 月顯的變化’除了兩弧 “ 外’仰知的脈衝電壓峰值時間變县^ 峰值時間則有變短等現象發生，兩 需維持在一正f % %線速度必 常靶圍内，不可差距過於極端，术， 無法呈現藉~， 否則波形將 t疋的脈衝波形，一旦兩弧間 線速度的！ S门的脈衝波形因為送 、差異過大’而無法互相搭配時，雔 弧現象，Β作β 又弧各易產生斷 I 且^接外觀也將受到影響。 另者，將仰鐸電極送線速度固定， 平 度下推t 4 艾十#达線速 订波形量測’隨著平銲電極送線速度的減少，其平 200920537 銲波型將有.明顯的變化，除 銲的脈衝電壓峰值時間* 4的週期皆變大之外，平 但背景時間則增加。支長’仰銲的電壓峰值時間不變， 由上述可知，任一 會影響另-電極之銲接==少送線速度之影響下’皆 質與銲兩狐的送線速度，將是決定_ 安月b $分布的重要因素。 〜仰二Ϊ接使電源供應系統進行_雙弧平 銲之舖底，使平銲更為：：仃之雙弧銲接，且得以藉由仰 仰銲可同步6 1 ,工作物不用翻面’且平銲/ 生的二ΓΓ間。為1避免仰銲銲道因重力產 制，從實作，A #所限制’仰銲線徑將有所限 從貫作仔知在進行碳鋼 仰銲電極可選用η β η 丁 了視工作物厚度， 电7 了選用0·6,0.9關 過—/s，否則將有炫瘤產牛 d線速度不宜超 限制。 Ί t @平鲜電極的線徑無此 兩弧的鋅接距離，對銲道品質有相 極在前’仰鮮輝道銲冠外觀因“仰銲電 過熔低陷現象發4 X平銲電極的熱影響，無 俗低現象發生’但因為仰銲電弧力較弱 極在前之預熱效果，其熔透能力較差，因 干電 觀平整且熔深充；？ ，s 確保鲜道外 正且熔，未充足，必須增加仰銲時之能 徑及送線速度來達成，或是從 σ由增加線 λ飞疋從開槽根面深度來解央 雙弧的銲接電壓波型，施銲時皆呈 ^。 形，並有交錯的現象，從此可知使用單電源進=脈衝波 电哪進仃雙弧銲時 200920537 ’其施置可規律的互相分布，而益互相 …互相干擾之情形發4 在無須將厚板翻面施銲的程序下，透過雙弧 銲接製程設計，即可達到全炫透之目#，對於更厚之] :銲:在確保第一道次全溶透之目標下，進行後續= 本發明功效增進之處如下： ，卜本發明冑電極氣體金屬冑孤銲接之方法 <、’、肩將厚板翻面，銲接更快速方便。 ，' 2、本發明雙電極氣體金屬電弧銲接之方法及" 。“單-電源供應系，统，且雙弧銲時無相互干擾之情 3 、本發明雙電極氣體金 ,. ^ i屬罨弧鲜接之方法及其系 、β亥仰銲之下電極於平辉之上雷掹* ‘ 提升^ (上電極之前，使銲後良 月1J文係針對本發明之較佳竇 進杵 佳貫％例為本發明之技術特 仃具體之說明；惟，孰养此 本於明 ‘、…^此項技術之人士當可在不脫 X月之精神與原則下對本 變fJ 4 %月進仃變更與修改，而該 -、修改，皆應涵蓋於如 中。 τ明寻利靶圍所界定之範 的 作 道 統 統 形 統 率 徵 離 等 疇 第一圖 $二圖 第三圖 圖式簡單說明 係本發明之其一實施例系統配置圖 係本發明《工作，開槽I態示意圖 係本發明之平銲與仰銲搶體位置圖 第四 ，叮陌肚m直圖 圖.係本發明之其一較佳成品斷面示意 圖 12 200920537 第五圖：係平銲及雙弧銲之銲接面積與熱變形方向示意圖 〇 第六圖：係本發明雙弧銲之電壓波形呈現交替脈衝現象圖 〇 【主要元件符號說明】 (1 0 )單一 GMAW電源供應系統 (1 1 )送線機構 (1 2 )送線機構 (2 0 )平銲槍體 (2 1 )仰銲搶體 (2 2 )銲接方向 (3 0 )工作物 (3 0 a )工作物 (4 0 )氣體混合器 (41)分流閥 (5 0 )試片斷面 (α )上開槽角度 (/3 )下開槽角度 (a )平銲開槽深度 (b )預留未開槽的板厚部份 (t )工作物板厚 (X )兩銲槍間的距離 (nl )熱變形方向 (n2 )熱變形方向 13 200920537Tungsten Arc Welding), while the lower electrode is a plasma arc electrode, because it has no melting electrode to limit the welding depth, so it can only be applied to the welding of the sheet metal. In the article published in 199, I used i to use the power supply of the first one, and the two-electrode GTAW was equipped with f _ &&&& $ ^ clothing directly on both sides of the board, and used the vertical way 6 0 6 1 Ming alloy for the fresh joint experiment, but the plate is made of vertical welding, the consideration is not the same as the flat welding / overhead welding. In the case of slotting, if the single-sided slotting will make the filling area large, it is not conducive to rapid welding, and also makes the filling, the 自 leaf self-consumption increase, and the welding η long, and if the double-sided grooved, The area of the crucible is greatly reduced. ', a problem' is based on the above-mentioned well-known and strong broadcast m "the problem of the existence of the problem - a more ideal and practical innovation 仃 development structure" real consumers are eagerly awaiting, also related to the industry must work hard The goal and direction of research and development breakthroughs. There are... 'The inventor has been engaged in the manufacturing and development of related products for many years 5 200920537 and design experience. After the detailed design and careful evaluation of the above objectives, the invention will be practical. [Disclosed] Technical problems to be solved: Conventional electrodes are divided into consumable electrodes and non-consumable electrodes, such as argon welding and plasma welding electrodes are non-consumable! · Raw electrodes 'so can be melted The efficiency is poor, and although there is a double-sided welding using a single power supply system, it is not the use of Gas Metal Arc Welding (GMAW), so the thickness of the work is still limited. Technical special | 曰 eight! Fork TV rolling metal arc: Γ Γ method and its system 'mainly supply gas metal arc welding (GMAW) upper electrode by single-power supply system Gas metal pole electric =::: The crop is not right... (4), the gas metal welding electrode is fresh in the front, and the gas metal arc is better in the m. The illusion is like the first floor, so available, Bonding quality, and the thick plate needs to be turned over, increase the amount of A to the extreme ..., shoulder turn, can only be solved in the subsequent evening pass welding. Compare the effect of the prior art: First 'Technology has mining Welding up-welding synchronous tungsten argon arc welding, /, using the upper electrode as the lower electrode for the plasma arc lightning to make the m-electrode, the 电极 $ electrode, because both are non-consumed, the penetration depth and the filling efficiency In the case of Ding, the thick plate welding and the W limit are not suitable for use. However, the flat welding of the present invention (GMAW), ®, wood metal arc welding is a consumable electrode, which can be opened. 〇 〇 兼 兼 兼 兼 兼 兼 兼 兼 兼 成 成 成 成 ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ Stupid to increase multi-pass flat welding can solve the step board or double-sided welding without turning over. /,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, Different, it is obviously different from vertical double-sided welding. Condition difference related to the technology, means and good examples of the invention, and with the drawings 哞 1 ^ ^ ^ 较 较 较 较 5 5 5 5 5 5 I believe that the hair, the structure and the characteristics of the hair, the singer, the singer, the singer, the singer, the singer, the singer, the singer, the singer, the singer, the singer, the The present invention provides a two-electrode gas metal system "to achieve its method" device using at least a single-GMAW power supply system (丄〇), which is connected to the wire mechanism (1 1 ), (1 2 ) to provide flat welding Grab the body (2 〇) and the back welding body (2 1 ) positive power supply, the fresh work object (3 〇) is connected to the single - : MAW power supply system (1 〇) power supply negative pole, and use the gas mixer ( 4 0 ) and the diverter valve (4 workers) send the mixed gas to the flat welding body (2 0) and The gun body (2 i ) for double arc gmaw welding. In the above process, the voltage pulse frequency can be recorded by the oscilloscope as an important tool for welding electrical measurement, and the voltage pulse frequency can be adjusted. More important information. The above gas may be argon gas and carbon dioxide or a mixed gas. 7 200920537 Refer to the second road - η ψ 3jl ri* Not invented by the flat welding and the overhead welding double gun synchronous binding double orphan dry connection method to open the 梓 & -^ in the thick plate work (3 〇) The grooved s and the leaves will be grooved in the form of welding. Since the double guns are not the same, the φ a is processed into a double V form with a large upper and lower, wherein the α and /5 angles are The upper and lower opening is the angle of the cymbal, a is the depth of the flat welding groove, and the bh 咕 7 7 sub-port is ''''''''' Referring to the third figure, 仰1 '1 in 'forced appearance of flatness and penetration, in addition to the line speed, flat. Dry body (2 0) and overhead welding (2 1 arc distance) (The distance between the two welding grabs) (Ranping welding grabs the body (2 〇) a this 1 month 1J 'can make the overhead welding gun body (2 1) the back welding marrying efficiency is better, but the tilting pinch, sound β - , <There is a problem of over-melting and depression, and the welding method of the electrode in front of the gun body is 'no over-melting. The welding direction in the third figure (2 2) is the arrow In the condition that does not affect the appearance of the fresh-welded bead, the energy of the fresh-keeping is increased, so that the overhead welding wire is 9.9mm, so as to increase the overhead welding force (2 " the lower electrode's overhead welding ability' a μ The welding crown has a flat appearance, and the t-welding wire speed j is set at 9cm/s. The two arcs are spaced apart from each other to form a weld bead with a relatively flat weld bead. At this time, the root depth is about —— Xiao can achieve the purpose of full dissolution. In addition, 'the line speed will be increased to "the depth of the root surface can also make the work (3 〇) all dashed, that is, when the root surface is deep J thick, then send, The twist should also be increased. Or take the parameter from the order, the root surface is reduced to 1.5·, the overhead welding line speed is set to 1〇cm/s, and the two arc spacing is set to 〇. 5mm 'also The purpose of full penetration can be achieved. In order to take into account the appearance quality of the overhead weld bead and increase the penetration of the upper electrode 8 200920537 condition 'appropriate double arc welding distance 龅 ^ distance will be an important variable when the power supply In the process of double arc flat/upright glow connection, the fresh connection method of the lower electrode in front can be used, and the distance between the distances is about i〇cm~lcm, which can improve the appearance quality of the fresh and fresh road and the increase of the flat welding penetration. It is better to find a better weld sigma. The mouth is matched with the upper electrode 1.2_ to the lower electrode 〇9 线 wire diameter, in order to ensure the smooth appearance of the fresh fresh crown, the wire is sent. The speed needs to be maintained at 15 Cm/S~9cm/s. Although the increase of the overhead welding wire speed can achieve the purpose of full refining, the welding crown will not be as flat as the overhead welding wire speed at 9cm/s, and can be slotted. Size to solve this - ask J ^ right to ensure double arc welding, work: ^ 〇) penetration ability 'root deep construction Maintaining the condition of the 'Big Valley S' to ensure the appearance of the overhead welding crown is smooth, forming a fully-dissolved weld bead. Referring to the fourth figure, one-time double-arc synchronous welding can achieve one penetration weld. Quality, which has been verified as a success, as shown in the test piece (5 Q) in the fourth figure, in the single-power supply system, the hidden double-fox welding, in addition to the simultaneous engagement of the work, and It can ensure the full refining of the weld bead. The double V-groove slotting method combined with the double-arc synchronous flat welding/ups welding 1 can greatly reduce the material area, and there is no need to worry about the advantages of the first dissolution. Under the welding defects of thick plate and poor fusion, the part of the flat welding (four) can be completed by secondary flat welding. This technology can complete the thick plate docking without turning the plate, and the process efficiency is also improved. It will be greatly improved by 0 a. Refer to the figure shown in the fifth figure, 'The work is only for flat welding (3 0 9 200920537). The required welding area is quite large, and the working oil (3 0 ) is used to weld the oil surface... Invented double arc welding, discussion 'only for flat welding work... hot deformation direction heart Deformed in the direction of the Xue joint, and the direction of the invention C 3 0) after the welding, the deformed side f is connected, /, the work object is called ..., the viewing direction η2, n3 respectively toward the flat shape, so # U^ and Yang & direction The changes are thus offset to cancel each other and reduce the amount of deformation. J Liang, read the /, the figure does not, in the double arc synchronous welding, the rule of the Ming and the other alternate, and this happens: the arc first presents the result to illustrate that in the double arc welding * σ to measure the current from the waveform will Equally divided into the flat power supply, its + 4 thousand # and the zinc-pushing body electrode 'because its voltage and current must affect each other, from the double-arc waveform range, the alternating ink waveform will appear alternate pulses now "such as: : It is known that when the sending speeds of the two poles are similar / the figure is not) π is nearly the same, the wave pattern is also very similar, and the 3 - distinct alternating pulse phenomenon, in order to be more advanced - and the characteristics, we spleen zr The welding of the double-arc welding of the Li Ri Shi double arc is measured by the waveform of the electrode. The wire is applied to the wire. 4 4' As the cycle of the overhead welding becomes larger, the change of the month is 'except for the two arcs'. 'The peak time of the pulse voltage of the peak is changed. The peak time is shortened. The two need to maintain a positive f%. The line speed must be within the target range. The difference cannot be too extreme. Otherwise the waveform will t疋 the pulse waveform once the line speed between the two arcsWhen the pulse waveforms of the S gates cannot be matched with each other because of the difference in the transmission, the arc phenomenon, the β and the arc are easy to generate the break I and the appearance of the joint will also be affected. In addition, the wire feeding speed of the tilting electrode is fixed, and the flatness pushes the t 4 Ai 10 line up the speed of the waveform measurement. With the reduction of the wire feeding speed of the flat welding electrode, the flat wave of the 200920537 welding wave type will be obvious. The change in the pulse voltage peak time of the soldering *4 period is increased, but the background time is increased. The peak length of the 'supporting voltage' does not change. It can be seen from the above that any one will affect the welding of the other electrode == the wire feeding speed of the two foxes will be determined by the influence of the wire feeding speed. An important factor in the distribution of An Yue b $. ~ Yang 2 Ϊ 使 电源 电源 电源 电源 电源 电源 电源 电源 电源 电源 双 双 双 双 双 双 双 双 双 双 双 双 双 双 双 双 双 双 双 双 双 双 双 双 双 双 双 双 双 双 双 双 双 双 双 电源And flat welding / raw two. In order to avoid the production of the overhead weld bead due to gravity, from the implementation, the limit of the 'A' of the weld line will be limited from the perspective of the carbon steel up welding electrode can be selected η β η Thickness, electricity 7 has been selected 0. 6, 0.9 off - / s, otherwise there will be a dazzling tumor cattle d line speed should not exceed the limit. Ί t @平鲜电极's wire diameter does not have the zinc arc connection distance of the two arcs, the quality of the weld bead has a phase in front of the front of the Yanghuai Huidao crown due to the "ups welding electric over-melting depression phenomenon 4 X flat welding electrode The heat effect, the vulgar low phenomenon occurs 'but because the arc welding force of the overhead welding is weaker than the pre-heating effect, the penetration ability is poor, because the dry electricity is smooth and deep-filled; ?, s to ensure that the fresh road is outside and If the melting is not sufficient, the energy diameter and the wire feeding speed of the overhead welding must be increased to achieve the welding voltage waveform of the double arc from the σ by increasing the line λ and the depth of the grooved root surface. They are all in shape and have a staggered phenomenon. From then on, it can be seen that when using a single power supply, the pulse wave, which is in the double arc welding, 200920537 'the application can be regularly distributed to each other, and the mutual interference... Under the procedure of no need to turn the thick plate over the welding, through the double arc welding process design, you can achieve the full dazzling eye #, for thicker]: welding: under the goal of ensuring the first pass Follow-up = The improvement of the efficacy of the present invention is as follows: The method of orphan welding <, ', shoulder to turn the thick plate, the welding is faster and more convenient. , 2, the method of the two-electrode gas metal arc welding of the present invention " "single-power supply system, system, and double There is no mutual interference during arc welding. 3. The two-electrode gas gold of the present invention, ^ i is a method of simmering the arc and its system, and the electrode below the beta galax is on the top of the flat ray * ' 提升 ^ ( Prior to the upper electrode, the preferred example of the invention is that the preferred embodiment of the present invention is a specific description of the technical features of the present invention; however, this is the case of Yu Ming', ... Those who are technically able to make changes and modifications to this change under the spirit and principle of X-month, and the - and amendments should be covered in the above. The system of the invention is the same as the first embodiment of the present invention. The second embodiment of the present invention is a system configuration diagram of the present invention. Welding and overhead welding position map fourth, 叮 肚 belly m straight map. One of the preferred embodiments of the present invention Schematic diagram of product section 12 200920537 Figure 5: Schematic diagram of welding area and thermal deformation direction of flat welding and double arc welding 〇 Sixth figure: The voltage waveform of double arc welding of the present invention exhibits alternating pulse phenomenon 〇 [Main component symbol description 】 (1 0) single GMAW power supply system (1 1) wire feeding mechanism (1 2) wire feeding mechanism (2 0) flat welding gun body (2 1) overhead welding body (2 2) welding direction (3 0) work Object (30 a) working object (40) gas mixer (41) diverter valve (50) test piece surface (α) groove angle (/3) groove angle (a) flat weld groove depth (b) Reserved unslotted plate thickness portion (t) Workpiece plate thickness (X) Distance between two welding guns (nl) Thermal deformation direction (n2) Thermal deformation direction 13 200920537
V (η 3 )熱變形方向 14V (η 3 ) thermal deformation direction 14