JP2014113641A - ARC WELDING METHOD OF Zn-PLATED STEEL SHEET MEMBER, AND ARC WELDING MEMBER AND ITS MANUFACTURING METHOD - Google Patents

ARC WELDING METHOD OF Zn-PLATED STEEL SHEET MEMBER, AND ARC WELDING MEMBER AND ITS MANUFACTURING METHOD Download PDF

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JP2014113641A
JP2014113641A JP2013236528A JP2013236528A JP2014113641A JP 2014113641 A JP2014113641 A JP 2014113641A JP 2013236528 A JP2013236528 A JP 2013236528A JP 2013236528 A JP2013236528 A JP 2013236528A JP 2014113641 A JP2014113641 A JP 2014113641A
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arc welding
protrusion
members
welding
joint
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JP6505359B2 (en
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Takefumi Nakako
武文 仲子
Takayuki Yoshida
剛之 吉田
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Nippon Steel Nisshin Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To solve such a problem that the Zn-based plating is evaporated due to heat in the welding and is made to vaporize when the arc-welding of a Zn-plated steel sheet member is performed, so that the Zn vapor remains in a weld metal and may cause weld defects as referred to as a blowhole, and therefore, normally some gaps are made between members to be welded and the welding is performed to prevent the occurrence of the blowhole, however it is difficult to secure some gaps with a simple and easy method.SOLUTION: Compression or shearing deformation is applied in some area of the end of one member among two members to be welded to form a protrusion at the end of the member, or half die cutting shearing is performed on some area of the surface to form the protrusion at the unilateral surface of the member. The two members to be welded are brought into abutment with each other through the protrusion, and thereby the arc welding is performed in the state where the gaps between the members are secured reliably.

Description

本発明は、Ｚｎ系めっき鋼板製の型鋼を切断した部材に、部材加工を行う現場あるいは溶接作業を行う施工現場等で簡単な塑性加工を施すことにより、接合部の溶接部材間の間隔を確実に確保してブローホールのない健全な溶接部を得ることができるアーク溶接方法に関する。   The present invention ensures the interval between the welded members at the joint by applying simple plastic working to the member cut from the Zn-plated steel sheet steel at the site where the member is processed or at the site where the welding operation is performed. It is related with the arc welding method which can ensure and can obtain the healthy weld part without a blowhole.

Ｚｎめっき鋼板同士、あるいはＺｎ系めっき鋼板と鋼板をアーク溶接により接合する場合、双方の隙間を設けずに溶接すると、溶接時に気化したＺｎ蒸気が溶接金属中に残留してブローホールを生じる。ブローホールは溶接継手の強度を損なう懸念があることから、溶接長さに占めるブローホール長さの和を例えば３０％程度以下に抑制することが好ましい。 When joining Zn-plated steel plates or between Zn-based plated steel plates and steel plates by arc welding, if welding is performed without providing a gap between the two, Zn vapor evaporated during welding remains in the weld metal and a blow hole is generated. Since blowholes are likely to impair the strength of welded joints, it is preferable to suppress the sum of blowhole lengths in the weld length to, for example, about 30% or less.

Ｚｎ系めっき鋼板の溶接においてブローホールを防止する方法として、溶接する双方の部材の間に若干の隙間を設けることが有効である。引用文献１によれば、１ｍｍ弱程度の隙間を設けることによりブローホールを抑制できるとの結果が報告されている。また、部材の溶接部近傍を曲げ加工により凸部を設けて隙間を確保する方法が特許文献１に開示されている。部材の素材となる板材として両面全体に最大高さ０．０５〜０．３ｍｍの突起を所定の密度で配置した鋼板を用いることで隙間を確保する方法が特許文献２に開示されている。 As a method for preventing blowholes in welding of a Zn-based plated steel sheet, it is effective to provide a slight gap between both members to be welded. According to the cited document 1, the result that a blowhole can be suppressed by providing the clearance gap of about 1 mm is reported. Further, Patent Document 1 discloses a method for securing a gap by providing a convex portion near a welded portion of a member by bending. Patent Document 2 discloses a method for securing a gap by using a steel plate in which protrusions having a maximum height of 0.05 to 0.3 mm are arranged at a predetermined density on both sides as a plate material that is a material of a member.

「亜鉛めっき鋼板のアーク溶接―気孔欠陥と溶接作業に及ぼす影響因子―」，溶接技術，２００６年１０月号，ｐ１２５，図４"Arc welding of galvanized steel sheets-Porosity defects and influencing factors on welding work", Welding Technology, October 2006, p125, Fig. 4

特開昭６２−１７９８６９号公報Japanese Patent Laid-Open No. 62-179869 特開平０５−２１２４０５号公報Japanese Patent Laid-Open No. 05-212405

Ｚｎ系めっき鋼板製部材の用途分野の一つとして住宅などの構造材が挙げられる。このような構造材は、Ｚｎ系めっき鋼板を素材とした溝形鋼やリップ溝形鋼等の軽量形鋼を溶接等の接合手段により組立てたものが多く用いられている。このように汎用のＺｎ系めっき鋼板製軽量形鋼を溶接用途に使用する場合、特許文献１に開示されているように部材に予め凸部を設ける方法や、特許文献２に開示されているように表面に突起を配置した鋼板を適用することは、技術的あるいは経済的な理由により困難である。 As one of the application fields of the member made of Zn-based plated steel sheet, there is a structural material such as a house. As such a structural material, a material obtained by assembling a light-weight shaped steel such as a grooved steel or a lip grooved steel made of a Zn-based plated steel sheet by welding or the like is often used. Thus, when using a general-purpose Zn-based plated steel lightweight section steel for welding applications, as disclosed in Patent Document 1, a method of providing a protrusion in advance on a member, or disclosed in Patent Document 2 It is difficult to apply a steel plate having protrusions on the surface for technical or economic reasons.

また、軽量形鋼を切断する際に突起を残して切断することも可能である。しかし、加工可能な部位が長手方向端面に限られること、専用の切断金型を要することから任意の継手形状に対応することができず、また高価な金型が必要となるといった問題がある。 It is also possible to cut the lightweight shape steel leaving a protrusion. However, there is a problem that the portion that can be processed is limited to the end face in the longitudinal direction and a dedicated cutting die is required, so that it is not possible to cope with any joint shape, and an expensive die is required.

部材の仮組みの際に、スペーサを用いて部材の隙間を確保する、あるいは治具を用いて部材の隙間を確保した状態で仮固定するといった方法も可能である。しかし、前者は作業が煩雑となること、後者は慎重な作業が要求されること、ならびに溶接中の熱ひずみにより予め設定した隙間が変化すること等の問題がある。 When the members are temporarily assembled, it is possible to secure the gap between the members using a spacer, or temporarily fix the gap while securing the gap using a jig. However, the former has problems such as complicated work, the latter requires careful work, and a preset gap changes due to thermal strain during welding.

本発明は、以上のような問題点を解決し、Ｚｎ系めっき鋼板のアーク溶接を行う場合に、簡単且つ経済的な方法で種々の継手形状に対応可能な隙間設定方法を提供するものである。 The present invention solves the above-described problems and provides a clearance setting method capable of dealing with various joint shapes by a simple and economical method when arc welding of a Zn-based plated steel sheet is performed. .

本発明にかかるＺｎ系めっき鋼板のＴ字継手溶接法は、その目的を達成するため、Ｚｎ系めっき鋼板同士あるいはＺｎ系めっき鋼板と鋼板をＴ字継手にてアーク溶接する際に、一方の鋼板製部材の長手方向あるいは幅方向の端面に塑性変形により形成された１つ以上の突起を設け、突起を設けた鋼板製部材を、該突起を介して他方の鋼板の表面に突き当てることにより、他方の鋼板表面と一方の鋼板製部材の端部に該突起の突き出し量に相当する隙間を設け、該当接部分をアーク溶接によりＴ字突合せ接合することを特徴とする。 In order to achieve the purpose of the T-shaped joint welding method for Zn-based plated steel sheets according to the present invention, one of the steel sheets when arc welding the Zn-based plated steel sheets or between the Zn-based plated steel sheets and the steel sheet with a T-shaped joint. By providing one or more protrusions formed by plastic deformation on the end face in the longitudinal direction or the width direction of the manufacturing member, by abutting the steel plate member provided with the protrusion against the surface of the other steel plate via the protrusion, A gap corresponding to the protrusion amount of the protrusion is provided at the other steel plate surface and the end of the one steel plate member, and the corresponding contact portion is T-shaped butted by arc welding.

また、本発明にかかるＺｎ系めっき鋼板の重ね隅肉継手の溶接法は、その目的を達成するため、Ｚｎ系めっき鋼板同士あるいはＺｎ系めっき鋼板と鋼板を重ね隅肉継手にてアーク溶接する際に、一方の鋼板製部材の端部表面に塑性変形によって形成された１つ以上の突起を設け、突起を設けた鋼板製部材を、該突起を介して他方の鋼板の表面に重ね合せることにより、他方の鋼板表面と一方の鋼板製部材の表面に該突起の突き出し量に相当する隙間を設け、該当接部分をアーク溶接により重ね隅肉接合することを特徴とする。 Moreover, the welding method of the lap fillet joint of the Zn-based plated steel sheet according to the present invention is performed when arc welding of the Zn-based plated steel sheets or between the Zn-based plated steel sheets and the steel sheet with the lap fillet joint in order to achieve the object. In addition, by providing one or more protrusions formed by plastic deformation on the end surface of one steel plate member, the steel plate member provided with the protrusion is superimposed on the surface of the other steel plate via the protrusion. A gap corresponding to the protruding amount of the protrusion is provided on the surface of the other steel plate and the surface of the one steel plate member, and the contact portion is overlapped and joined by arc welding.

本発明により加工した、溝形鋼である部材１ａの長手方向端部の端面方向に形成された突起２ａの例及びその拡大図An example of the protrusion 2a formed in the end face direction of the longitudinal end portion of the member 1a made of channel steel processed according to the present invention and its enlarged view 図１に示した溝形鋼である部材１ａの長手方向端部の端面方向に突起２ａを形成するための構成の説明図Explanatory drawing of the structure for forming the processus | protrusion 2a in the end surface direction of the longitudinal direction edge part of the member 1a which is the channel steel shown in FIG. 図１に示した溝形鋼である部材１ａの長手方向端部の端面方向に突起２ａを形成するためのもう一つの構成を示す説明図Explanatory drawing which shows another structure for forming the processus | protrusion 2a in the end surface direction of the longitudinal direction edge part of the member 1a which is the channel steel shown in FIG. 本発明により加工した、溝形鋼である部材１ｂの長手方向の表面に形成された突起２ｂの例ならびに突起２ｂを形成するための構成の説明図The explanatory view of the structure for forming the example of the processus | protrusion 2b and the example of the processus | protrusion 2b formed in the surface of the longitudinal direction of the member 1b which is a grooved steel processed by this invention 図４に示した部材１ｂの長手方向端部の表面に形成された突起２ｂの拡大図Enlarged view of the protrusion 2b formed on the surface of the longitudinal end of the member 1b shown in FIG. 長手方向端部の端面に突起２ａが形成された溝形鋼である縦部材１ａを溝形鋼である横部材１ｃのウエブ表面に突き当てたＴ字溶接継手部の例を示す説明図Explanatory drawing which shows the example of the T-shaped welded joint part which contact | abutted the longitudinal member 1a which is the grooved steel in which the protrusion 2a was formed in the end surface of a longitudinal direction edge part on the web surface of the horizontal member 1c which is a grooved steel 長手方向端部の表面に突起２ｂが形成された溝形鋼である上部材１ｂを溝形鋼である下部材１ｄのウエブ表面に載置した重ね隅肉溶接継手部の例を示す説明図Explanatory drawing which shows the example of the overlap fillet welded joint part which mounted the upper member 1b which is the grooved steel in which the processus | protrusion 2b was formed in the surface of a longitudinal direction edge part on the web surface of the lower member 1d which is a grooved steel 長手方向端部の端面に突起２ａが形成された一方の溝形鋼である部材１ａと、幅方向端部の端面方向に突起２ａが形成された他方のリップ溝形鋼である部材（１ａ）を組合せた溶接継手の例を示す説明図A member 1a which is one grooved steel having protrusions 2a formed on the end face at the end in the longitudinal direction, and a member (1a) which is the other lip grooved steel having protrusions 2a formed in the end face direction at the end in the width direction. Explanatory drawing which shows the example of the welded joint which combined 図６に示した溝形鋼である継手部をアーク溶接により接合したＴ字溶接継手の外観図External view of a T-shaped welded joint in which the joint, which is the channel steel shown in FIG. 6, is joined by arc welding 図７に示した溝形鋼である継手部をアーク溶接により接合した重ね隅肉溶接継手の外観図External view of a lap fillet welded joint in which the joint, which is the channel steel shown in FIG. 7, is joined by arc welding ９０°Ｖ型パンチで加工した突起の形状例を示す図The figure which shows the example of the shape of the processus | protrusion processed with the 90 degree V type punch 図１１に示した突起のつぶし率と高さ６ａの関係を示す図The figure which shows the relationship between the crushing ratio of the protrusion shown in FIG. 11, and the height 6a 突き合わせ部の隙間（ルートギャップ）とブローホール数の関係を示す図A diagram showing the relationship between the gap (root gap) of the butting part and the number of blow holes

図１に、本発明による部材１ａの長手方向端部の端面方向に形成された突起２ａ及びその拡大図を示す。また図２に、部材１ａの長手方向端部の端面方向に突起２ａを形成するための構成を示す。端面に面した領域を表裏より塑性圧縮して厚みを減じて、その際に発生する圧縮方向と直行する方向の塑性流動を利用して自由境界である端面方向に突起２ａを形成する。 FIG. 1 shows a protrusion 2a formed in the end surface direction of the longitudinal end portion of the member 1a according to the present invention and an enlarged view thereof. FIG. 2 shows a configuration for forming the protrusion 2a in the end face direction of the longitudinal end portion of the member 1a. The region facing the end surface is plastically compressed from the front and back sides to reduce the thickness, and the protrusion 2a is formed in the end surface direction which is a free boundary by utilizing the plastic flow in the direction perpendicular to the compression direction generated at that time.

表裏面より圧縮する工具として図２に示すような部材１ａの表面との接触面積の狭いパンチ３と接触面積の広いアンビル４（金床）を用いると、接触面圧の高いパンチ３と接触している面のみが陥没して、図１に示すような形状の突起２ａが得られる。端面から突起の先端までの距離で定義される突き出し量６ａは、工具により排除された材料の体積に依存することから、パンチ３と部材１ａの表面との接触面積とパンチ３の押し込み量（パンチ３とアンビル４の間隔）を選択することで突き出し量６ａを調整することが出来る。
なお、図では、パンチ３の先端形状が丸い平面形状であるが、その平面型は丸型に限らず、半丸型、矩形、台形等でも良く、さらに先端が平坦でないＶ字の楔形状あるいはその先端にＲが設けられたもの等でもよい。 When a punch 3 having a small contact area with the surface of the member 1a and an anvil 4 (anvil) having a large contact area as shown in FIG. Only the surface to be depressed is depressed to obtain a protrusion 2a having a shape as shown in FIG. Since the protrusion amount 6a defined by the distance from the end surface to the tip of the protrusion depends on the volume of the material removed by the tool, the contact area between the punch 3 and the surface of the member 1a and the pressing amount of the punch 3 (punch The distance 6a can be adjusted by selecting (the distance between 3 and the anvil 4).
In the drawing, the tip shape of the punch 3 is a round planar shape. However, the planar shape is not limited to a round shape, and may be a semicircular shape, a rectangle, a trapezoid, or the like. The tip provided with R may be used.

図３には、部材１ａの長手方向端部の端面方向に突起を形成するためのもう一つの構成を示す。工具形状としては、このように互いに狭い領域を圧下するパンチ３を対向させて加工を行ってもよい。 FIG. 3 shows another configuration for forming a protrusion in the end face direction of the longitudinal end portion of the member 1a. As the tool shape, the punch 3 that squeezes a narrow area may be opposed to each other.

図４には、部材１ｂの長手方向端部の表面に突起２ｂを形成するための構成を、また図５に、部材１ｂの表面に形成された突起２ｂの拡大図を示す。図２、図３に示したアンビル４に換えてパンチ３に対向する表面に窪みを設けたダイ５を使用することにより、パンチ３により押し込まれた材料が厚み方向に圧縮されることなくダイ５の窪みの中にせん断変形を伴って移動し、パンチ３の反対側の部材表面に突起２ｂが形成される。この加工は、一般的に半抜き加工と呼ばれる。このように部材１ｂの表面に突起を形成する方法においては工具により部材１ｂの厚みを減じるような変形がほとんど生じないことから、部材１ｂ表面と突起の先端の距離で定義される突き出し量６ｂは部材１ｂ表面に対するパンチ３の押し込み量とほぼ等しくなる。 FIG. 4 shows a configuration for forming the protrusion 2b on the surface of the longitudinal end of the member 1b, and FIG. 5 shows an enlarged view of the protrusion 2b formed on the surface of the member 1b. By using a die 5 having a depression on the surface facing the punch 3 in place of the anvil 4 shown in FIGS. 2 and 3, the material pushed by the punch 3 is not compressed in the thickness direction. The projection 2b is formed on the surface of the member on the opposite side of the punch 3. This processing is generally referred to as half punching. In this way, in the method of forming protrusions on the surface of the member 1b, deformation that reduces the thickness of the member 1b by the tool hardly occurs. Therefore, the protrusion amount 6b defined by the distance between the surface of the member 1b and the tip of the protrusion is The amount of pressing of the punch 3 into the surface of the member 1b is almost equal.

図６に、４個の突起２ａが形成された縦部材１ａを、横部材１ｃの表面に突き当てたＴ字溶接継手の例を示す。突起２ａにより縦部材１ａの端面と、横部材１ｃの表面の間に突起２ａの突き出し量に相当する隙間が確実に形成され、該隙間部を炭酸ガスアーク溶接等により溶接することでブローホールの少ない溶接部が得られる。 FIG. 6 shows an example of a T-welded joint in which the vertical member 1a formed with four protrusions 2a is abutted against the surface of the horizontal member 1c. The protrusion 2a reliably forms a gap corresponding to the protruding amount of the protrusion 2a between the end surface of the vertical member 1a and the surface of the horizontal member 1c, and the blow hole is reduced by welding the gap by carbon dioxide arc welding or the like. A weld is obtained.

図７に、外側表面に突起２ｂが形成された上部材１ｂを、下部材１ｄの外側表面に直交して載置した重ね隅肉溶接継手の例を示す。突起２ｂにより上部材１ｂの外側表面と、下部材１ｄの外側表面との間に突起２ｂの突き出し量に相当する隙間が確実に形成され、突起２ｂが設けられた上部材１ｂの端部を炭酸ガスアーク溶接等により重ね隅肉溶接することでブローホールの少ない溶接部が得られる。 FIG. 7 shows an example of a lap fillet welded joint in which the upper member 1b having the protrusion 2b formed on the outer surface is placed perpendicular to the outer surface of the lower member 1d. The protrusion 2b reliably forms a gap corresponding to the protrusion amount of the protrusion 2b between the outer surface of the upper member 1b and the outer surface of the lower member 1d, and the end of the upper member 1b provided with the protrusion 2b is carbonated. A welded portion with few blow holes can be obtained by lap fillet welding by gas arc welding or the like.

図１から図７は部材の長手方向端面に突起を形成する方法について説明しているが、幅方向端面についても同様の加工を行って突起を形成することが可能である。幅方向の端部に突起を形成した例として、図８に長手方向端部の端面に突起２ａが形成された一方の部材１と、幅方向端部の端面方向に突起２ａが形成された他方の部材を組合せた溶接継手の例を示す。本例についても、図６及び図７に示した例と同様に溶接継手部に突起２ａの突き出し量に相当する隙間が形成されることから、ブローホールの少ない健全な溶接部が得られる。 Although FIGS. 1 to 7 describe a method of forming protrusions on the end surface in the longitudinal direction of the member, it is possible to form protrusions by performing similar processing on the end surface in the width direction. As an example in which the protrusion is formed at the end in the width direction, one member 1 in which the protrusion 2a is formed on the end face of the end in the longitudinal direction in FIG. The example of the welding joint which combined these members is shown. Also in this example, since a gap corresponding to the protrusion amount of the protrusion 2a is formed in the weld joint as in the examples shown in FIGS. 6 and 7, a sound weld with few blowholes can be obtained.

図９には、図６に示した部材１ａと部材１ｃをアーク溶接により接合したＴ字継手の外観を示す。また、図１０には、図７に示した上部材１ｂと下部材１ｄをアーク溶接により接合した重ね隅肉継手の外観を示す。部材に設けた突起により部材間の隙間を確保して溶接を行っても、突起は溶接時に溶融して溶接金属の中に溶け込んでしまう。そのため、この図９または図１０に示すように、溶接後の継手の外観は、突起を設けない部材から製造した継手と同様である。   In FIG. 9, the external appearance of the T-shaped joint which joined the member 1a and the member 1c shown in FIG. 6 by arc welding is shown. FIG. 10 shows the appearance of the lap fillet joint in which the upper member 1b and the lower member 1d shown in FIG. 7 are joined by arc welding. Even when welding is performed with a gap provided between the members secured by the protrusions provided on the member, the protrusions melt during welding and melt into the weld metal. Therefore, as shown in FIG. 9 or FIG. 10, the appearance of the joint after welding is the same as that of a joint manufactured from a member not provided with a protrusion.

図１１には、９０°Ｖ型で先端に１．５ｍｍのＲが設けられたパンチと平坦なアンビルとの間で板の端面から約１．５ｍｍの範囲を板厚方向に圧縮することにより、端面に形成された突起の外観を示す。元の板厚に対するパンチの押込み量（横軸、潰し率）と突起の高さ（縦軸）の関係を図１２に示す。この図より、例えば３０％厚みを減じるようにパンチを圧下することにより、ブローホールの削減に有効な隙間１ｍｍに相当する大きさの突起が得られる。 In FIG. 11, a range of about 1.5 mm from the end face of the plate is compressed in the plate thickness direction between a 90 ° V type punch with a 1.5 mm R at the tip and a flat anvil. The external appearance of the processus | protrusion formed in the end surface is shown. FIG. 12 shows the relationship between the punch push-in amount (horizontal axis, crushing rate) and the projection height (vertical axis) relative to the original plate thickness. From this figure, for example, by reducing the punch so as to reduce the thickness by 30%, a projection having a size corresponding to a gap of 1 mm effective for reducing blowholes can be obtained.

図１３は半抜きせん断加工によって種々の突出量の図５に示す突起を設けた板厚２．３ｍｍ、付着量４５ｇ／ｍ２（片面）の合金化溶融亜鉛めっき鋼板を、図７に示す重ねすみ肉溶接継手の上部材１ｂとして用い、炭酸ガスアーク溶接法により溶接電流２２０Ａ、溶接速度毎分１２０ｃｍの条件で水平重ねすみ肉溶接した際に、溶接ビードに発生したブローホール数を突起高さ（ルートギャップ）で整理した結果である。 FIG. 13 shows an alloyed hot-dip galvanized steel sheet having a thickness of 2.3 mm and an adhesion amount of 45 g / m 2 (single side) provided with the protrusions shown in FIG. The number of blowholes generated in the weld bead when the fillet weld joint is used as the upper member 1b of the fillet welded joint by horizontal carbonization welding under the conditions of a welding current of 220A and a welding speed of 120cm / min. The results are organized by route gap.

ウエブ幅１５０ｍｍ、フランジ高さ５０ｍｍ、公称板厚４．５ｍｍ、片面めっき付着量４５ｇ／ｍ２の、亜鉛−６％アルミニウム−３％マグネシウム溶融めっき鋼板製溝形鋼の一方の長手方向端部のウエブ部に２箇所、左右フランジ部に各１箇所について、夫々端面から約１．５ｍｍの領域を先端角度９０°、先端Ｒ＝１．５ｍｍのパンチ３と対向するアンビル４で挟み込むことによって元厚の約３０％押し潰して厚さを減じ、押し潰した領域の端面部分に図１１に示すような形状の突起高さ約１ｍｍの突起２ａを形成した。この４箇所の突起部が形成された溝形鋼端部を縦部材１ａとして、横部材となる同寸法の片面めっき付着量４５ｇ／ｍ２の、亜鉛−６％アルミニウム−３％マグネシウム溶融めっき鋼板製溝形鋼１ｃのウエブ外面に図６に示すような状態で双方が直交するように突き当てて、縦部材先端と横部材のウエブ表面に約１ｍｍの隙間を有するＴ字突合せ継手を構成した。この隙間を含む突合せ部を、溶接電流１４０Ａ、溶接速度毎分４０ｃｍの条件で炭酸ガスアーク溶接したところ、ブローホールの発生率（溶接長に対するブローホールの投影長さの和）は約７％であった。突起を設けないで同様にアーク溶接した場合、約４０％のブローホール率であった。 One longitudinal end of a grooved steel made of zinc-6% aluminum-3% magnesium hot-dip galvanized steel with a web width of 150 mm, a flange height of 50 mm, a nominal plate thickness of 4.5 mm, and a single-sided plating deposit of 45 g / m 2 . The original thickness is obtained by sandwiching an area of about 1.5 mm from the end face with an anvil 4 facing the punch 3 having a tip angle of 90 ° and a tip R = 1.5 mm at two locations on the web portion and one on each of the left and right flange portions. The protrusion 2a having a protrusion height of about 1 mm having a shape as shown in FIG. 11 was formed on the end surface portion of the crushed area. The end portion of the grooved steel formed with the four protrusions is a vertical member 1a, and a zinc-6% aluminum-3% magnesium hot-dip galvanized steel sheet having a single-side plating coating amount of 45 g / m 2 of the same size as a horizontal member. A T-shaped butt joint having a gap of about 1 mm between the front end of the vertical member and the web surface of the horizontal member was formed by abutting against the web outer surface of the grooved steel 1c so as to be orthogonal to each other in the state shown in FIG. . When the butt portion including this gap was subjected to carbon dioxide arc welding under the conditions of a welding current of 140 A and a welding speed of 40 cm per minute, the blow hole generation rate (the sum of the blow hole projection length and the weld length) was about 7%. It was. When arc welding was similarly performed without providing protrusions, the blowhole ratio was about 40%.

本発明によるアーク溶接用部材とＺｎ系めっき鋼板のアーク溶接法によれば、軽量形鋼を切断した部材の溶接箇所に簡単な作業により突起を形成することで、確実に部材間の隙間を確保できるのでブローホールのない溶接部を得ることができる。また、突起を形成する加工作業は、簡易な工具により可能であり、しかも溶接現場で施工できるので、作業性にも優れる。 According to the arc welding method of an arc welding member and a Zn-based plated steel sheet according to the present invention, a clearance is reliably ensured by forming a protrusion by a simple operation at a welding position of a member cut from a light-weight shaped steel. As a result, it is possible to obtain a weld without a blowhole. Further, the processing operation for forming the protrusions can be performed with a simple tool and can be performed at the welding site, so that the workability is excellent.

１ 被溶接部材
１ａ Ｔ字継手の縦部材
１ｂ 重ね隅肉継手の上部材
１ｃ Ｔ字継手の横部材
１ｄ 重ね隅肉継手の下部材
２ａ 突起 （端面方向）
２ｂ 突起 （表面方向）
３ パンチ
４ アンビル（金床）
５ ダイ
６ａ、６ｂ 突き出し量

DESCRIPTION OF SYMBOLS 1 To-be-welded member 1a Vertical member 1b of T-shaped joint Top member 1c of lap fillet joint Horizontal member 1d of T-shaped joint Lower member 2a of lap fillet joint Projection (end face direction)
2b Protrusion (surface direction)
3 Punch 4 Anvil (Anvil)
5 Die 6a, 6b Projection amount

Claims (6)

少なくとも一方の部材にＺｎ系めっきが被覆されている二つの部材の当接部を接合してＴ字継手を形成するアーク溶接方法であって、
二つの部材のうち、部材の表面が当接部となる部材を横部材、部材の端面が当接部となる部材を縦部材と呼ぶとき、
縦部材の端面に厚み方向に圧縮する塑性加工により当該端面に対して***する１つ以上の突起を設け、縦部材をその突起を介して横部材に突き当てることにより、縦部材と横部材の間に突起の突き出し量に相当する大きさの隙間を形成した後にアーク溶接を行うことを特徴とするＺｎ系めっき鋼板のアーク溶接方法。 An arc welding method for forming a T-shaped joint by joining abutting portions of two members coated with Zn-based plating on at least one member,
Of the two members, when a member whose surface is a contact portion is called a horizontal member, and a member whose end surface is a contact portion is called a vertical member,
By providing one or more protrusions protruding from the end face of the longitudinal member by plastic working that compresses in the thickness direction, the longitudinal member is abutted against the transverse member through the protrusion, thereby allowing the longitudinal member and the transverse member to An arc welding method for a Zn-based plated steel sheet, characterized in that arc welding is performed after a gap having a size corresponding to the protrusion amount of the protrusion is formed therebetween. 少なくとも一方の部材にＺｎ系めっきが被覆されている二つの部材の当接部を接合して重ね隅肉継手を形成するアーク溶接方法であって、
二つの部材のうち、部材の表面が当接部となる部材を下部材、部材の端面部が当接部となる部材を上部材と呼ぶとき、
上部材の端面部に厚み方向に半抜きせん断する塑性加工により下部材に対向する面に対して***する１つ以上の突起を設け、上部材をその突起を介して下部材に重ね合わせることにより、上部材と下部材の間に突起の突き出し量に相当する大きさの隙間を形成した後にアーク溶接を行うことを特徴とするＺｎ系めっき鋼板のアーク溶接方法。 An arc welding method for forming a lap fillet joint by joining abutting portions of two members coated with Zn-based plating on at least one member,
Of the two members, when a member whose surface is a contact portion is called a lower member, and a member whose end surface is a contact portion is called an upper member,
By providing one or more protrusions that protrude with respect to the surface facing the lower member by plastic working that is half-cut and sheared in the thickness direction in the end surface portion of the upper member, and superimposing the upper member on the lower member via the protrusions An arc welding method for a Zn-based plated steel sheet, wherein arc welding is performed after forming a gap having a size corresponding to the protrusion amount of the protrusion between the upper member and the lower member. 二つの部材をアーク溶接により接合してＴ字継手を形成するための一方の部材であって、
部材端部の一部の領域を当該部材の厚み方向に圧縮し、圧縮方向に直角の方向に塑性変形させて、当該部材の端面に突起を形成したことを特徴とするアーク溶接用部材。 One member for joining two members by arc welding to form a T-shaped joint,
A member for arc welding characterized in that a partial region of a member end is compressed in the thickness direction of the member and plastically deformed in a direction perpendicular to the compression direction to form a protrusion on the end surface of the member. 二つの部材をアーク溶接により接合して重ね隅肉継手を形成するための一方の部材であって、
部材表面の一部の領域を当該部材の厚み方向に半抜きせん断加工して、当該部材の表面の一部の片側の面に突起を形成したことを特徴とするアーク溶接用部材。 One member for joining two members by arc welding to form a lap fillet joint,
A member for arc welding, wherein a part of the surface of the member is subjected to half-punching and shearing in the thickness direction of the member to form a protrusion on one side of the surface of the member. 二つの部材をアーク溶接により接合してＴ字継手を形成するための部材の製造方法であって、
部材端部の一部の領域を当該部材の厚み方向に圧縮し、圧縮方向に直角の方向に塑性変形させて、当該部材の端面に突起を形成することを特徴とするアーク溶接用部材の製造方法。 A method of manufacturing a member for joining two members by arc welding to form a T-shaped joint,
Manufacturing a member for arc welding characterized in that a part of the end of the member is compressed in the thickness direction of the member and plastically deformed in a direction perpendicular to the compression direction to form protrusions on the end surface of the member. Method. 二つの部材をアーク溶接により接合して重ね隅肉継手を形成するための部材の製造方法であって、
部材表面の一部の領域を当該部材の厚み方向に半抜きせん断加工して、当該部材の表面の一部の片側の面に突起を形成することを特徴とするアーク溶接用部材の製造方法。 A method for producing a member for joining two members by arc welding to form a lap fillet joint,
A method for manufacturing a member for arc welding, characterized in that a part of a surface of a member is subjected to half-cut shearing in a thickness direction of the member to form a protrusion on one side of a part of the surface of the member.
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016084423A1 (en) * 2014-11-27 2016-06-02 日新製鋼株式会社 ARC WELDING METHOD FOR Zn PLATED STEEL SHEET AND ARC WELDED JOINT
CN106180359A (en) * 2016-08-31 2016-12-07 无锡市光彩机械制造有限公司 A kind of adjustable steel plate rushes louvered die
CN109926701A (en) * 2019-04-30 2019-06-25 重庆川船大业钢结构有限公司 T-type plate unrooted list groove welding method
WO2019244605A1 (en) 2018-06-22 2019-12-26 株式会社神戸製鋼所 Method for joining plated steel sheet and joint structure
EP3909713A4 (en) * 2019-02-25 2022-03-09 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) Method for joining plated steel plates, and joined structure

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS532362A (en) * 1976-06-30 1978-01-11 Hitachi Ltd Butt welding
JPH04238607A (en) * 1990-12-14 1992-08-26 Ishikawajima Harima Heavy Ind Co Ltd Method and device for joining hot rolled stock
JPH05212405A (en) * 1992-01-31 1993-08-24 Sumitomo Metal Ind Ltd Plated steel sheet having excellent fillet weldability
JPH06238438A (en) * 1993-02-15 1994-08-30 Mitsubishi Heavy Ind Ltd Machining and welding of fillet joint
JP2003136243A (en) * 2001-11-06 2003-05-14 Nissan Motor Co Ltd Lap joint structure using aluminium base material and welding method thereof
JP2009255179A (en) * 2002-06-27 2009-11-05 Sumitomo Metal Ind Ltd Material for welding, weld product and automobile body
JP2013022646A (en) * 2011-07-19 2013-02-04 Aizemu:Kk Method of forming welding connection part of joining member

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS532362A (en) * 1976-06-30 1978-01-11 Hitachi Ltd Butt welding
JPH04238607A (en) * 1990-12-14 1992-08-26 Ishikawajima Harima Heavy Ind Co Ltd Method and device for joining hot rolled stock
JPH05212405A (en) * 1992-01-31 1993-08-24 Sumitomo Metal Ind Ltd Plated steel sheet having excellent fillet weldability
JPH06238438A (en) * 1993-02-15 1994-08-30 Mitsubishi Heavy Ind Ltd Machining and welding of fillet joint
JP2003136243A (en) * 2001-11-06 2003-05-14 Nissan Motor Co Ltd Lap joint structure using aluminium base material and welding method thereof
JP2009255179A (en) * 2002-06-27 2009-11-05 Sumitomo Metal Ind Ltd Material for welding, weld product and automobile body
JP2013022646A (en) * 2011-07-19 2013-02-04 Aizemu:Kk Method of forming welding connection part of joining member

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2017258938B2 (en) * 2014-11-27 2018-05-10 Nisshin Steel Co., Ltd. Arc welded joint of Zn plated steel sheet
EP3330030A1 (en) * 2014-11-27 2018-06-06 Nisshin Steel Co., Ltd. Arc welding joint assembly with zn plated steel sheets obtained by an arc welding method
WO2016084423A1 (en) * 2014-11-27 2016-06-02 日新製鋼株式会社 ARC WELDING METHOD FOR Zn PLATED STEEL SHEET AND ARC WELDED JOINT
CN107107244A (en) * 2014-11-27 2017-08-29 日新制钢株式会社 The arc welding method and arc-welded joint of Zn systems clad steel sheet
KR20170131718A (en) * 2014-11-27 2017-11-29 닛신 세이코 가부시키가이샤 ARC WELDED JOINT FOR Zn PLATED STEEL SHEET
AU2015351713B2 (en) * 2014-11-27 2017-12-14 Nisshin Steel Co., Ltd. Arc welding method for Zn plated steel sheet and arc welded joint
AU2015351713B9 (en) * 2014-11-27 2017-12-21 Nisshin Steel Co., Ltd. Arc welding method for Zn plated steel sheet and arc welded joint
KR101994255B1 (en) * 2014-11-27 2019-06-28 닛테츠 닛신 세이코 가부시키가이샤 ARC WELDED JOINT FOR Zn PLATED STEEL SHEET
KR101849058B1 (en) 2014-11-27 2018-04-13 닛신 세이코 가부시키가이샤 ARC WELDING METHOD FOR Zn PLATED STEEL SHEET AND ARC WELDED JOINT
US10518351B2 (en) 2014-11-27 2019-12-31 Nippon Steel Nisshin Co., Ltd. Arc welding method for Zn plated steel sheet and arc welded joint
RU2654226C1 (en) * 2014-11-27 2018-05-17 Нисшин Стил Ко.,Лтд. METHOD OF ARC WELDING OF STEEL SHEET WITH Zn COATING AND WELDED CONNECTION IMPLEMENTED BY ARC WELDING
JP2016101593A (en) * 2014-11-27 2016-06-02 日新製鋼株式会社 Arc welding method for galvanized steel sheet and arc-welded joint
TWI622447B (en) * 2014-11-27 2018-05-01 Nisshin Steel Co Ltd Arc welding method for zinc-based electroplated steel plate
TWI632018B (en) * 2014-11-27 2018-08-11 日新製鋼股份有限公司 Arc welding joint of zinc-based electroplated steel plate
RU2686400C2 (en) * 2014-11-27 2019-04-25 Нисшин Стил Ко., Лтд. Steel sheet with zinc coating joining, made by arc welding
CN106180359B (en) * 2016-08-31 2018-11-16 无锡市光彩机械制造有限公司 A kind of adjustable steel plate rushes louvered die
CN106180359A (en) * 2016-08-31 2016-12-07 无锡市光彩机械制造有限公司 A kind of adjustable steel plate rushes louvered die
WO2018041223A1 (en) * 2016-08-31 2018-03-08 无锡市光彩机械制造有限公司 Steel sheet gap-punching die
US11982307B2 (en) 2018-06-22 2024-05-14 Kobe Steel, Ltd. Method for joining plated steel sheet and joint structure
WO2019244605A1 (en) 2018-06-22 2019-12-26 株式会社神戸製鋼所 Method for joining plated steel sheet and joint structure
KR20210009378A (en) 2018-06-22 2021-01-26 가부시키가이샤 고베 세이코쇼 Bonding method and bonding structure of plated steel plate
EP3909713A4 (en) * 2019-02-25 2022-03-09 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) Method for joining plated steel plates, and joined structure
CN109926701A (en) * 2019-04-30 2019-06-25 重庆川船大业钢结构有限公司 T-type plate unrooted list groove welding method

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