JP2984074B2 - Welding method for surface treated steel sheet - Google Patents
Welding method for surface treated steel sheetInfo
- Publication number
- JP2984074B2 JP2984074B2 JP3056169A JP5616991A JP2984074B2 JP 2984074 B2 JP2984074 B2 JP 2984074B2 JP 3056169 A JP3056169 A JP 3056169A JP 5616991 A JP5616991 A JP 5616991A JP 2984074 B2 JP2984074 B2 JP 2984074B2
- Authority
- JP
- Japan
- Prior art keywords
- welding
- steel sheet
- projection
- treated steel
- plating layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Description
【０００１】[0001]
【産業上の利用分野】本発明は、鋼板表面に形成された
Ｚｎ，Ａｌ等のめっき層を破壊することなく、表面処理
鋼板を溶接する方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of welding a surface-treated steel sheet without destroying a plated layer of Zn, Al or the like formed on the surface of the steel sheet.
【０００２】[0002]
【従来の技術】建材として使用される鋼板には、通常
１．６〜６．０ｍｍの比較的厚い板厚をもっているもの
がある。鋼板から所定形状の構造物を構築するとき、炭
酸ガスアーク溶接，スポット溶接等によって鋼板相互を
溶接している。なかでも、スポット溶接は、作業性に優
れていることから製造工程で多用されている。2. Description of the Related Art Some steel plates used as building materials have a relatively large thickness of 1.6 to 6.0 mm. When constructing a structure having a predetermined shape from steel plates, the steel plates are welded to each other by carbon dioxide arc welding, spot welding, or the like. Among them, spot welding is frequently used in the manufacturing process because of its excellent workability.
【０００３】ところが、めっき鋼板を建材として使用し
溶接を行うとき、溶接時の受熱によって鋼板表面のめっ
き層が破壊され易い。たとえば、めっき金属の代表的な
材料であるＺｎは、蒸気圧が高いため、溶接時に鋼板が
高温に加熱されたとき、鋼板表面から迅速に揮散する。
その結果、溶接部周辺の鋼板表面が露出され、腐食発生
の起点となる。[0003] However, when welding is performed using a plated steel sheet as a building material, the plating layer on the surface of the steel sheet is easily broken by heat received during welding. For example, Zn, which is a typical material of a plated metal, has a high vapor pressure, so that when the steel sheet is heated to a high temperature during welding, it quickly evaporates from the steel sheet surface.
As a result, the surface of the steel plate around the welded portion is exposed and becomes a starting point of the occurrence of corrosion.
【０００４】めっき層の破壊は、スポット溶接において
もみられ、溶接部表面のめっき層が損傷を受けると共
に、電極接触部のめっき層が消失する。そこで、めっき
層が損傷或いは消失した部分の耐食性を確保するため、
ジンクリッチペイント等で後補修を行っている。しか
も、後補修等は自動化されておらず人手によるところが
多く、塗装管理や作業環境の問題がある。この後補修を
省略することができれば、作業性が向上するばかりでな
く、作業者に与える負担も軽減される。[0004] Destruction of the plating layer is also observed in spot welding, in which the plating layer on the surface of the weld is damaged and the plating layer on the electrode contact portion disappears. Therefore, to ensure the corrosion resistance of the part where the plating layer has been damaged or disappeared,
Post-repair is performed with zinc rich paint. In addition, post-repair and the like are not automated and are often performed manually, which poses problems with coating management and work environment. If the repair can be omitted thereafter, not only the workability is improved, but also the burden on the operator is reduced.
【０００５】そこで、溶接部表面のめっき層に加えられ
る損傷が比較的少ない溶接方法として、プロジェクショ
ン溶接が一部で採用されている。たとえば、特開昭５８
−１９２６８５号方法では、めっき鋼板に形成したプロ
ジェクションの凹部に導電性材料を充填し、この導電性
材料を介してめっき鋼板を溶接することが提案されてい
る。また、特開平１−２５８８７３号公報では、重ね合
わせた２枚の被溶接材料に複数のプロジェクションを形
成し、被溶接材料の両面を一対の平電極で挾みプロジェ
クションを順次溶接することが提案されている。Therefore, projection welding is partially adopted as a welding method in which damage to a plating layer on a surface of a weld is relatively small. For example, Japanese Patent Application Laid-Open
No. 192,686 proposes that a conductive material is filled in a projection recess formed in a plated steel sheet, and the plated steel sheet is welded through the conductive material. Japanese Patent Application Laid-Open No. 1-258873 proposes that a plurality of projections are formed on two superposed materials to be welded, and the projections are sequentially welded by sandwiching both surfaces of the material to be welded with a pair of flat electrodes. ing.
【０００６】[0006]
【発明が解決しようとする課題】後補修を必要としない
溶接条件下でめっき鋼板をプロジェクション溶接すると
き、めっき層の破壊はある程度抑えられる。しかし、溶
接部の接合強度は、従来のスポット溶接に比較して著し
く小さい。そのため、溶接部の信頼性に欠け、プロジェ
クション溶接が採用される対象に制約を受ける。When a plated steel sheet is subjected to projection welding under welding conditions that do not require post-repair, the destruction of the plated layer can be suppressed to some extent. However, the joining strength of the weld is significantly lower than that of conventional spot welding. For this reason, the reliability of the welded portion is lacking, and the target to which projection welding is adopted is limited.
【０００７】プロジェクション溶接自体は、スポット溶
接の適用が困難な板厚の異なる材料を溶接する、いわゆ
る差厚溶接法の一手段として開発・普及されてきたもの
であり、めっき層を破壊することなくスポット溶接に匹
敵する溶接強度を得る検討は、これまでのところ実質的
に行われていない。[0007] Projection welding itself has been developed and spread as a means of so-called differential thickness welding in which materials having different thicknesses are difficult to apply to spot welding. So far, there has been virtually no study to obtain a welding strength comparable to spot welding.
【０００８】このプロジェクション溶接によって必要と
する溶接強度をもち、しかもめっき層の破壊がない溶接
部を形成できれば、溶接後の後補修を省略することが可
能になると共に、作業性が大幅に向上する。この利点
は、建築構造物の組立て作業に留まらず、自動車車体，
家具製品，電気機器等の広範な分野においても活かされ
るものである。[0008] If a projection having the required welding strength and no destruction of the plating layer can be formed by this projection welding, post-welding repair after welding can be omitted and workability is greatly improved. . This advantage is not limited to the assembly of building structures,
It can be used in a wide range of fields such as furniture products and electrical equipment.
【０００９】本発明は、このような要求を満足すべく開
発されたものであり、プロジェクションの形状に改良を
加えることによって、めっき層を破壊することなく表面
処理鋼板をプロジェクション溶接し、しかも優れた溶接
強度をもった溶接部を得ることを目的とする。The present invention has been developed to satisfy such a demand. By improving the shape of the projection, the surface-treated steel sheet can be projection-welded without breaking the plating layer. An object is to obtain a welded part having welding strength.
【００１０】[0010]
【課題を解決するための手段】本発明の溶接方法は、そ
の目的を達成するため、Ｚｎ，Ｚｎ合金，Ｓｎ，Ｓｎ合
金，Ａｌ又はＡｌ合金めっき層が形成された表面処理鋼
板を他の表面処理鋼板又は普通鋼鋼板にプロジェクショ
ン溶接する際、前記表面処理鋼板の板厚をＴ（ｍｍ）と
するとき、直径Ｄ（ｍｍ）が（４〜６）×Ｔ1/2 ，中心
部の最大張出し高さＨ（ｍｍ）が０．５〜２．０ｍｍ，
曲率半径Ｒ（ｍｍ）が５〜１０ｍｍのプロジェクション
を前記表面処理鋼板に形成することを特徴とする。According to the welding method of the present invention, in order to achieve the object, a surface-treated steel sheet having a Zn, Zn alloy, Sn, Sn alloy, Al or Al alloy plating layer formed on another surface. At the time of projection welding to a treated steel sheet or a plain steel sheet, when the thickness of the surface-treated steel sheet is T (mm), the diameter D (mm) is (4 to 6) × T 1/2 , and the maximum overhang of the central part is obtained. Height H (mm) is 0.5 to 2.0 mm,
A projection having a radius of curvature R (mm) of 5 to 10 mm is formed on the surface-treated steel sheet.
【００１１】ここで、プロジェクションは、表面処理鋼
板をめっき層と共にプレス加工することにより形成する
ことができる。表面処理鋼板としては、Ｚｎ，Ｚｎ合
金，Ｓｎ，Ｓｎ合金，Ａｌ，Ａｌ合金等があり、その種
類によって本発明が制約を受けるものではない。Here, the projection can be formed by pressing a surface-treated steel sheet together with a plating layer. Examples of the surface-treated steel sheet include Zn, Zn alloy, Sn, Sn alloy, Al, and Al alloy, and the present invention is not limited by the type.
【００１２】[0012]
【作 用】鋼板に形成されるプロジェクションは、溶接
時の電流密度を規制し、必要とするナゲットを形成する
上で重要な役割を受け持つ。たとえば、小さなプロジェ
クションでは、溶接電流により加熱される範囲が小さ
く、ナゲットも小径となるため、所定の溶接強度が得ら
れない。逆に、大きなプロジェクションでは、広面積の
界面を介して通電が行われるので、所定のナゲット径が
形成される電流密度を得るために供給電流を増加させる
ことが必要となる。しかも、被溶接材料が表面処理鋼板
であることから、プロジェクションの形成時に下地鋼板
からめっき層が剥離することがないようにすることが要
求される。[Operation] The projection formed on the steel sheet plays an important role in regulating the current density during welding and forming the required nugget. For example, in a small projection, the range heated by the welding current is small and the nugget also has a small diameter, so that a predetermined welding strength cannot be obtained. Conversely, in the case of a large projection, power is supplied through a wide-area interface, so that it is necessary to increase the supply current in order to obtain a current density at which a predetermined nugget diameter is formed. In addition, since the material to be welded is a surface-treated steel sheet, it is required that the plating layer does not peel off from the base steel sheet during projection formation.
【００１３】本発明者等は、このような前提にたって、
プロジェクションの形状及びサイズを検討した。その結
果、図１に示すように、表面処理鋼板１の板厚をＴとす
るとき、直径Ｄ＝（４−６）×Ｔ1/2,中心部の最大張出
し高さＨ＝０．５〜２．０ｍｍ，曲率半径Ｒ＝５〜１０
ｍｍのプロジェクション２が、めっき層に損傷を与え
ず、しかも優れた溶接強度をもつ溶接部を得る上で有効
なものであることを多数の実験から見い出した。The present inventors have made such a premise that
The shape and size of the projection were studied. As a result, as shown in FIG. 1, when the thickness of the surface-treated steel sheet 1 is T, the diameter D = (4-6) × T 1/2 , and the maximum overhang height H at the center is 0.5 to 2.0 mm, radius of curvature R = 5-10
It has been found from a number of experiments that the projection 2 having a thickness of 2 mm is effective for obtaining a weld having excellent welding strength without damaging the plating layer.
【００１４】規定された範囲に直径Ｄ，最大張出し高さ
Ｈ及び曲率半径Ｒを維持し、表面処理鋼板１に溶接電極
を押し付けて溶接電流を供給し通電加熱を行うとき、要
求される溶接強度を得る上で必要な径のナゲットを形成
することができる。また、電圧を過度に大きくすること
なく、供給電流を３０ｋＡ以上にすることができるた
め、瞬時の通電で必要径のナゲットが形成され、溶接作
業の迅速化が図られる。しかも、極めて短時間の通電で
あるため、めっき層に与えられる熱影響に起因した損傷
を最小限に押さえることが可能となる。When the diameter D, the maximum overhang height H, and the radius of curvature R are maintained in the specified ranges, the welding current is supplied by pressing the welding electrode against the surface-treated steel sheet 1 and the electric current is heated, the required welding strength is obtained. Can be formed into a nugget having a required diameter. Further, since the supply current can be increased to 30 kA or more without excessively increasing the voltage, a nugget having a required diameter is formed by instantaneous energization, and the welding operation can be sped up. In addition, since the current is applied for a very short time, it is possible to minimize damage caused by the thermal effect on the plating layer.
【００１５】この形状及びサイズのプロジェクション２
は、図２に示した従来のプロジェクションに比較して、
特に表面処理鋼板の溶接に効果的なものである。たとえ
ば、図２（ａ）の円筒状に成形したプロジェクション２
ａでは、相手部材に対する表面処理鋼板１の接触面積が
過度に大きくなるばかりでなく、プロジェクション２ａ
に屈曲部があり、めっき層に亀裂，剥離等の欠陥が発生
し易くなる。また、図２（ｂ）のリング状プロジェクシ
ョン２ｂでは、めっき層に与える損傷が大きくなると共
に、接合界面が一定しないことから溶接条件が不安定に
なる。更に、図２（ｃ）に示した円錐状のプロジェクシ
ョン２ｃでは、形成されるナゲットの径が小さく、溶接
強度が低下し易い。Projection 2 of this shape and size
Is compared to the conventional projection shown in FIG.
It is particularly effective for welding surface-treated steel sheets. For example, a projection 2 formed into a cylindrical shape in FIG.
a, the contact area of the surface-treated steel sheet 1 with respect to the mating member is not only excessively large, but also the projection 2a
Has a bent portion, and defects such as cracks and peeling easily occur in the plating layer. Further, in the ring-shaped projection 2b of FIG. 2B, damage to the plating layer is increased, and welding conditions become unstable because the bonding interface is not constant. Furthermore, in the conical projection 2c shown in FIG. 2 (c), the diameter of the formed nugget is small, and the welding strength tends to decrease.
【００１６】図１に示したプロジェクションにおいて、
直径Ｄが４×Ｔ1/2 よりも小さい場合、ナゲット径が小
さくなり、溶接強度を低下させる原因となる。逆に、直
径Ｄが６×Ｔ1/2 を超える条件では、大面積の接合界面
に所定の溶込みを行わせる上から、供給電流を高めるこ
とが必要となり、大電力の溶接電源が要求される。ま
た、過度に大きな直径Ｄは、溶接後の表面性状を劣化さ
せる原因となる。In the projection shown in FIG.
When the diameter D is smaller than 4 × T 1/2 , the nugget diameter becomes small, which causes a decrease in welding strength. Conversely, under the condition that the diameter D exceeds 6 × T 1/2 , it is necessary to increase the supply current in order to perform a predetermined penetration at the joint interface of a large area, and a high power welding power source is required. You. Further, the excessively large diameter D causes deterioration of the surface properties after welding.
【００１７】最大張出し高さＨが０．５ｍｍ未満である
と、溶接電極を押し付けたときに相手部材に対する表面
処理鋼板の面圧が不足し、界面反応が十分に進行せず、
部分的にポアが生じた接合部が形成される。他方、最大
張出し高さＨが２．０ｍｍを超えると、軟化した溶接部
が溶接電極の加圧力によって座屈し、皺等の欠陥が発生
し易くなる。If the maximum overhang height H is less than 0.5 mm, when the welding electrode is pressed, the surface pressure of the surface-treated steel sheet against the mating member becomes insufficient, and the interfacial reaction does not proceed sufficiently.
A joint having a partially formed pore is formed. On the other hand, if the maximum overhang height H exceeds 2.0 mm, the softened welded portion buckles due to the pressing force of the welding electrode, and defects such as wrinkles are likely to occur.
【００１８】５ｍｍ未満の曲率半径Ｒでは、プロジェク
ション２が急峻で、めっき層の剥離が生じ易くなる。他
方、曲率半径Ｒが１０ｍｍを超えると、相手部材に接触
する表面処理鋼板１の接触界面が大きくなるため、溶接
時に大電流を供給する大型の溶接電源が必要とされる。When the radius of curvature R is less than 5 mm, the projection 2 is steep, and the plating layer is easily peeled off. On the other hand, if the radius of curvature R exceeds 10 mm, the contact interface of the surface-treated steel sheet 1 that comes into contact with the mating member becomes large, so that a large welding power supply that supplies a large current during welding is required.
【００１９】表面処理鋼板１にこのような半球状のプロ
ジェクション２を形成することにより、数ｍｓｅｃの極
めて短い時間に数十ｋＡ程度の大電流を供給し、十分に
大きな溶接強度をもったプロジェクション溶接が可能と
なる。By forming such a hemispherical projection 2 on the surface-treated steel sheet 1, a large current of about several tens of kA is supplied in a very short time of several milliseconds, and projection welding having a sufficiently large welding strength is performed. Becomes possible.
【００２０】なお、溶接条件としては、本発明を拘束す
るものではないが、表面処理鋼板１に押し付ける溶接電
極の押圧力を１０〜５０ｋｇｆ／ｍｍ2に設定し、電圧
１５０〜１８０Ｖで４０〜５０ｋＡの電流を供給するこ
とが好ましい。押圧力が１０ｋｇｆ／ｍｍ2 未満では、
溶融金属の飛散が激しく、溶接強度の低下及びバラツキ
が多くなる。逆に押圧力が５０ｋｇｆ／ｍｍ2 を超える
とき、本発明が対象とする鋼板の板厚においてはプロジ
ェクション形状が崩れる問題が生じる。また、１５０Ｖ
未満の電圧及び４０ｋＡ未満の電流では所定の強度が得
られず、１８０Ｖを超える電圧及び５０ｋＡを超える電
流では熱影響によるめっき層の損傷が生じ易くなる。た
だし、これらの条件は、後述する実施例で使用した鋼板
の板厚２．３ｍｍに関するものであり、板厚の如何に応
じて押圧力，電圧，電流等の好適条件が変わることは勿
論である。The welding conditions are not limited to the present invention, but the pressing force of the welding electrode pressed against the surface-treated steel sheet 1 is set to 10 to 50 kgf / mm 2 and the voltage is 150 to 180 V and 40 to 50 kA. Is preferably supplied. If the pressing force is less than 10 kgf / mm 2 ,
Molten metal scatters vigorously, resulting in a decrease in welding strength and variations. Conversely, when the pressing force exceeds 50 kgf / mm 2 , there is a problem that the projection shape is broken in the thickness of the steel sheet targeted by the present invention. In addition, 150V
At a voltage of less than 40 kA and a current of less than 40 kA, a predetermined strength cannot be obtained, and at a voltage of more than 180 V and a current of more than 50 kA, the plating layer is easily damaged by the influence of heat. However, these conditions relate to a thickness of 2.3 mm of the steel plate used in the examples described later, and it goes without saying that suitable conditions such as pressing force, voltage, current and the like change according to the thickness of the steel plate. .
【００２１】[0021]
【実施例】板厚２．３ｍｍの亜鉛めっき鋼板に、直径Ｄ
＝８．０ｍｍ，最大張出し高さＨ＝１．０ｍｍ，曲率半
径Ｒ＝８ｍｍの半球状プロジェクションを形成した。こ
の表面処理鋼板１を、図３に示すように平板の表面処理
鋼板３と重ね合わせた。表面処理鋼板３側にフラットバ
ー電極４を配置し、プロジェクション２を形成した表面
処理鋼板１側に直径２２ｍｍの溶接電極５を押し付け
た。EXAMPLE A galvanized steel sheet having a thickness of 2.3 mm was coated with a diameter D.
= 8.0 mm, the maximum overhang height H = 1.0 mm, and the radius of curvature R = 8 mm. This surface-treated steel sheet 1 was overlapped with a flat surface-treated steel sheet 3 as shown in FIG. The flat bar electrode 4 was arranged on the surface-treated steel sheet 3 side, and the welding electrode 5 having a diameter of 22 mm was pressed against the surface-treated steel sheet 1 on which the projection 2 was formed.
【００２２】溶接電極５の加圧力を６ＫＮの一定値に保
ち、電圧１５０Ｖで溶接電流を１．６ｍｓｅｃ供給し、
表面処理鋼板１を平板の表面処理鋼板３に溶接した。な
お、溶接機としては、衝撃電流圧接機を使用した。The welding pressure of the welding electrode 5 is maintained at a constant value of 6 KN, and a welding current is supplied at a voltage of 150 V for 1.6 msec.
The surface-treated steel sheet 1 was welded to a flat surface-treated steel sheet 3. In addition, as the welding machine, an impact current welding machine was used.
【００２３】溶接電流を変化させて、形成された溶接部
の溶接強度を調査した。図４は、この溶接強度と溶接電
流との関係を示したグラフである。なお、溶接電流とし
てはピーク電流で、溶接強度としては引張り剪断強さで
表している。図４から明らかなように、溶接電流を大き
くするに従って、溶接強度が向上していることが判る。
特に、溶接電流を４０ｋＡ以上に設定するとき、従来の
スポット溶接に比較して遜色のない引張り剪断強さ１０
ＫＮ以上の溶接強度が得られている。しかも、溶接部周
辺のめっき層に損傷が見られず、ジンクリッチペイント
等を使用した補修作業を不要とする良好な表面性状を呈
していた。The welding strength of the formed weld was investigated by changing the welding current. FIG. 4 is a graph showing the relationship between the welding strength and the welding current. The welding current is represented by a peak current, and the welding strength is represented by a tensile shear strength. As is clear from FIG. 4, it can be seen that the welding strength is improved as the welding current is increased.
In particular, when the welding current is set to 40 kA or more, the tensile shear strength is not inferior to that of the conventional spot welding.
A welding strength of KN or more is obtained. Moreover, the plating layer around the welded portion was not damaged, and exhibited good surface properties that did not require repair work using zinc rich paint or the like.
【００２４】また、直径Ｄ，最大張出し高さＨ及び曲率
半径Ｒの何れかを本発明で規定する範囲を超えて変動さ
せたプロジェクションを表面処理鋼板に形成し、同様な
条件下の溶接を行った。直径Ｄ及び曲率半径Ｒが大きす
ぎるプロジェクションを形成したものにあっては、表面
処理鋼板１及び３の接触界面が広がったため、同じ電力
供給の下では十分なナゲットが形成されず、溶接強度が
２ＫＮ以下と不足していた。また、最大張出し高さＨ及
び曲率半径Ｒが小さなプロジェクションを形成したもの
にあっては、小さな径のナゲットが形成され、引張り剪
断強度５ＫＮ以下の溶接強度であった。Further, a projection is formed on the surface-treated steel sheet by changing any of the diameter D, the maximum overhang height H and the radius of curvature R beyond the ranges specified in the present invention, and welding is performed under the same conditions. Was. In the case where the projection having the diameter D and the radius of curvature R that is too large was formed, the contact interface between the surface-treated steel sheets 1 and 3 was widened, so that a sufficient nugget was not formed under the same power supply and the welding strength was 2 KN. The following were insufficient. In the projections having a small maximum overhang height H and a small radius of curvature R, a nugget with a small diameter was formed, and the welding strength was 5 KN or less.
【００２５】[0025]
【発明の効果】以上に説明したように、本発明において
は、直径Ｄ，最大張出し高さＨ及び曲率半径Ｒを規定し
た半球状のプロジェクションを形成することにより、従
来のスポット溶接に匹敵する溶接強度をもった溶接部を
プロジェクション溶接で得ることが可能となる。しか
も、形成された溶接部のめっき層に与えられる損傷が最
小限に抑えられ、ジンクリッチペイント等を使用した後
補修を必要とせず、溶接ままの状態で使用可能な溶接部
が得られる。その結果、溶接工程の作業性が大幅に改善
される。As described above, according to the present invention, by forming a hemispherical projection in which the diameter D, the maximum overhang height H, and the radius of curvature R are defined, the welding comparable to the conventional spot welding is performed. A weld having high strength can be obtained by projection welding. Moreover, damage to the plating layer of the formed welded portion is minimized, and a welded portion which can be used as is without using any repair after using zinc rich paint or the like is obtained. As a result, the workability of the welding process is greatly improved.
【図１】 本発明に従って形成されるプロジェクション
を示す。FIG. 1 shows a projection formed in accordance with the present invention.
【図２】 従来のプロジェクションを数例示す。FIG. 2 shows several examples of conventional projection.
【図３】 本発明実施例を説明するための図FIG. 3 is a diagram for explaining an embodiment of the present invention.
【図４】本発明の効果を具体的に表したグラフFIG. 4 is a graph specifically showing the effect of the present invention.
【符号の説明】 １ 表面処理鋼板， ２ プロジェクション，
３ 平板な鋼材，４ フラットバー電極， ５
溶接電極，Ｄ プロジェクションの直径，Ｈ 最大張出
し高さ， Ｒ 曲率半径[Description of Signs] 1 Surface-treated steel sheet, 2 Projection,
3 flat steel, 4 flat bar electrode, 5
Welding electrode, D projection diameter, H maximum overhang height, R radius of curvature
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) B23K 11/16 B23K 11/14 ──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. 6 , DB name) B23K 11/16 B23K 11/14
Claims (2)
又はＡｌ合金めっき層が形成された表面処理鋼板を他の
表面処理鋼板又は普通鋼鋼板にプロジェクション溶接す
る際、前記表面処理鋼板の板厚をＴ（ｍｍ）とすると
き、直径Ｄ（ｍｍ）が（４〜６）×Ｔ1/2 ，中心部の最
大張出し高さＨ（ｍｍ）が０．５〜２．０ｍｍ，曲率半
径Ｒ（ｍｍ）が５〜１０ｍｍのプロジェクションを前記
表面処理鋼板に形成することを特徴とする表面処理鋼板
の溶接方法。1. Zn, Zn alloy, Sn, Sn alloy, Al
Or, when the surface-treated steel sheet having the Al alloy plating layer formed thereon is projection-welded to another surface-treated steel sheet or an ordinary steel sheet, when the thickness of the surface-treated steel sheet is T (mm) , the diameter D (mm) is Forming a projection of (4-6) × T 1/2 , a maximum overhang height H (mm) at the center of 0.5-2.0 mm, and a radius of curvature R (mm) of 5-10 mm on the surface-treated steel sheet. A method for welding a surface-treated steel sheet.
面処理鋼板をめっき層と共にプレス加工することにより
形成されることを特徴とする表面処理鋼板の製造方法。2. The method according to claim 1, wherein the projection is formed by pressing a surface-treated steel sheet together with a plating layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3056169A JP2984074B2 (en) | 1991-02-26 | 1991-02-26 | Welding method for surface treated steel sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3056169A JP2984074B2 (en) | 1991-02-26 | 1991-02-26 | Welding method for surface treated steel sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04270076A JPH04270076A (en) | 1992-09-25 |
| JP2984074B2 true JP2984074B2 (en) | 1999-11-29 |
Family
ID=13019600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3056169A Expired - Lifetime JP2984074B2 (en) | 1991-02-26 | 1991-02-26 | Welding method for surface treated steel sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2984074B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010248720A (en) * | 2009-04-13 | 2010-11-04 | Nisshin Steel Co Ltd | Method of manufacturing channel steel building member |
| JP5613521B2 (en) * | 2010-10-08 | 2014-10-22 | 新日鐵住金株式会社 | Automotive structural member having a weld nut and method for manufacturing the same |
| KR101664610B1 (en) | 2014-12-05 | 2016-10-10 | 현대자동차주식회사 | Welding device and welding system of automobile parts |
| CN104668759A (en) * | 2015-02-03 | 2015-06-03 | 上海诚烨汽车零部件有限公司 | Method of optimizing projection welding process of galvanized steel sheets |
-
1991
- 1991-02-26 JP JP3056169A patent/JP2984074B2/en not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| 浜崎正信「重ね抵抗溶接」（昭４６−８−１５）株式会社産報 ｐ．１９５ |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04270076A (en) | 1992-09-25 |
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