JPH07132380A - Resistance welding method of different kinds of metal and resistance welding material - Google Patents
Resistance welding method of different kinds of metal and resistance welding materialInfo
- Publication number
- JPH07132380A JPH07132380A JP5307035A JP30703593A JPH07132380A JP H07132380 A JPH07132380 A JP H07132380A JP 5307035 A JP5307035 A JP 5307035A JP 30703593 A JP30703593 A JP 30703593A JP H07132380 A JPH07132380 A JP H07132380A
- Authority
- JP
- Japan
- Prior art keywords
- aluminum
- steel plate
- welding
- plate
- iron
- 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.)
- Withdrawn
Links
Landscapes
- Resistance Welding (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、自動車、鉄道車両、船
舶、建築構造物等の組立時に用いられる鋼板とアルミニ
ウム系材料の板との異種金属抵抗溶接方法、およびそれ
に用いる抵抗溶接用材料に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resistance welding method for dissimilar metals between a steel plate used for assembling automobiles, railway vehicles, ships, building structures, etc. and a plate made of an aluminum-based material, and a resistance welding material used therefor. It is a thing.
【０００２】[0002]
【従来の技術】鋼板とアルミニウム系材料の板等の異種
金属同士を抵抗溶接する場合、鉄／アルミニウム２層ク
ラッド材をインサート材に用い、鋼板とアルミニウム板
とをスポット溶接する方法については、既に多くの提案
がなされ、出願もされている（例えば、特開平４−５５
０６６号、特開平４−２５３５７８号）。しかし、これ
ら従来の方法では、２ステップの通電を必要としたり、
大電流を必要とするなどの問題点があった。2. Description of the Related Art When resistance-welding dissimilar metals such as a steel plate and a plate made of an aluminum-based material, a method of spot-welding a steel plate and an aluminum plate using an iron / aluminum two-layer clad material as an insert material is already known. Many proposals have been made and applications have been filed (for example, JP-A-4-55).
066, JP-A-4-253578). However, these conventional methods require two steps of energization,
There was a problem that a large current was required.
【０００３】また、クラッド材をインサート材に用いた
鋼板あるいはメッキ鋼板とアルミニウム板とのスポット
溶接においては、鋼板側に何らかの皮膜を塗布したクラ
ッド材あるいは何らかの皮膜を塗布した鋼板あるいはメ
ッキ鋼板を用いて溶接を行った例はない。また、幅広い
電流域で高い継手強度を維持し、かつ、電極へのアルミ
ニウムあるいはメッキの溶着量を最小限に抑える溶接法
は未だなされていない。Further, in spot welding of a steel plate or a plated steel plate using a clad material as an insert material and an aluminum plate, a clad material coated with some coating on the steel sheet side or a steel sheet coated with some coating or a plated steel sheet is used. There is no example of welding. Further, there has not yet been developed a welding method that maintains high joint strength in a wide current range and minimizes the amount of aluminum or plating deposited on the electrode.
【０００４】[0004]
【発明が解決しようとする課題】上記のように従来の溶
接方法によると、例えばメッキ鋼板の場合、溶接電流８
〜１１ｋＡ程度の低電流では鋼板側でメッキ層が妨げと
なってナゲットが形成されにくく溶接に高い電流を要す
る。According to the conventional welding method as described above, for example, in the case of a plated steel sheet, the welding current is 8
At a low current of about 11 kA, the plating layer on the steel sheet side hinders formation of a nugget, and a high current is required for welding.
【０００５】さらに、１０ｍｓ以下の短時間通電で溶接
を行おうとすると、溶接に大電流が必要となる。たしか
に溶接部の強度を上げるためには電流値を高くすること
が望ましいが、電流値を上げるとアルミニウムの板側の
電極にアルミニウムが、またメッキ鋼板の板側の電極に
はメッキが付着して板と電極が溶着したり、電極の寿命
が短くなったり、また、電流が不安定になり強度にばら
つきが生じたりして強度が低下する等の理由で電流を高
くすることにも限界がある。また、２ステップの通電に
おいては通電方向を変化させなくてはならないという煩
わしさがある。Further, if it is attempted to carry out welding by energizing for a short time of 10 ms or less, a large current is required for welding. Certainly, it is desirable to increase the current value in order to increase the strength of the weld, but when the current value is increased, aluminum adheres to the electrode on the aluminum plate side and plating adheres to the electrode on the plate side of the plated steel plate. There is also a limit to increasing the current because the plate and the electrode are welded, the life of the electrode is shortened, the current becomes unstable and the strength varies, and the strength is reduced. . In addition, in the two-step energization, the energizing direction has to be changed, which is troublesome.
【０００６】本発明はかかる従来の課題を解決するため
になされたもので、２ステップ通電や大電流を必要とせ
ず、高い継手強度が得られかつ、各電極へのアルミニウ
ムあるいはメッキの溶着量を最小限に抑えて溶接するこ
とが可能な異種金属の抵抗溶接方法及び抵抗溶接用材料
を提供することを目的とする。The present invention has been made in order to solve the above-mentioned conventional problems. It does not require two-step energization or large current, high joint strength can be obtained, and the amount of aluminum or plating deposited on each electrode can be increased. An object of the present invention is to provide a resistance welding method and a resistance welding material for dissimilar metals that can be welded with a minimum amount of welding.
【０００７】[0007]
【課題を解決するための手段】上記の目的を達成するた
めに、本発明は、請求項１において、鋼板あるいはメッ
キ鋼板と、アルミニウム系材料の板との間に、鋼板とア
ルミニウム系材料の板からなる２層の鉄／アルミニウム
クラッド材を同種材同士が向かい合うようにインサート
し、鋼板あるいはメッキ鋼板と、アルミニウム系材料の
板とを１回の通電でスポット溶接する異種金属の抵抗溶
接方法において、厚さ０．３〜３．０μｍの樹脂膜が鋼
板側に塗布された２層の鉄／アルミニウムクラッド材を
用い、溶接電流７．５〜１５．５ｋＡ、溶接時間８０〜
２８０ｍｓの条件で溶接を行う方法か、請求項２におけ
る厚さ０．３〜３．０μｍの樹脂膜が塗布された前記鋼
板あるいはメッキ鋼板を用い、溶接電流７．５〜１５．
５ｋＡ、溶接時間８０〜２８０ｍｓの条件で溶接を行う
方法によるものか、もしくは請求項３における３５０〜
４５０℃、時間１０分〜４時間の条件で大気中加熱して
鋼板側に酸化膜を形成させた鉄／アルミニウムクラッド
材を用い、溶接電流７．５〜１５．５ｋＡ、溶接時間８
０〜２８０ｍｓの条件で溶接を行うものであり、また、
抵抗溶接用材料としては、請求項４のインサートする２
層の鉄／アルミニウムクラッド材は厚さ０．３〜３．０
μｍの樹脂膜が鋼板側に塗布された２層の鉄／アルミニ
ウムクラッド材もしくは、請求項５のインサートする２
層の鉄／アルミニウムクラッド材は、導電性粒子が分散
された厚さ２．５μｍ以上の樹脂膜が鋼板側に塗布され
た２層の鉄／アルミニウムクラッド材もしくは、請求項
６の温度３５０〜４５０℃、時間１０分〜４時間の条件
で大気中加熱して鋼板側に酸化膜を形成させた２層の鉄
／アルミニウムクラッド材であるか、さらに、請求項７
の鋼板あるいはメッキ鋼板は、厚さ０．３〜３．０μｍ
の樹脂膜が塗布された鋼板あるいはメッキ鋼板を用いる
か、または、請求項８の鋼板あるいはメッキ鋼板は、導
電性粒子が分散された厚さ２．５μｍ以上の樹脂膜が塗
布された鋼板あるいはメッキ鋼板を用いるものである。In order to achieve the above object, the present invention provides a steel plate and a plate made of an aluminum material between a steel plate or a plated steel plate and a plate made of an aluminum material in claim 1. In a resistance welding method for dissimilar metals, a two-layer iron / aluminum clad material consisting of is inserted so that similar materials face each other, and a steel plate or a plated steel plate and a plate of an aluminum-based material are spot-welded with one energization, Using a two-layer iron / aluminum clad material with a resin film having a thickness of 0.3 to 3.0 μm applied to the steel plate side, a welding current of 7.5 to 15.5 kA and a welding time of 80 to
The welding current is 7.5 to 15% by using the welding method under the condition of 280 ms or the steel plate or the plated steel plate coated with the resin film having the thickness of 0.3 to 3.0 μm in claim 2.
According to the method of welding under the conditions of 5 kA and welding time of 80 to 280 ms, or 350 to 350 in claim 3.
Using an iron / aluminum clad material that was heated in the atmosphere at 450 ° C. for 10 minutes to 4 hours to form an oxide film on the steel sheet side, welding current was 7.5 to 15.5 kA, and welding time was 8
Welding is performed under the condition of 0 to 280 ms.
As the resistance welding material, the insert 2 according to claim 4 is used.
Layer iron / aluminum clad material has a thickness of 0.3-3.0
A two-layer iron / aluminum clad material in which a resin film of μm is applied to the steel sheet side, or the insert 2 according to claim 5.
The iron / aluminum clad material of the layer is a two-layer iron / aluminum clad material in which a conductive film-dispersed resin film having a thickness of 2.5 μm or more is applied to the steel plate side, or a temperature of 350 to 450 according to claim 6. 8. A two-layer iron / aluminum clad material in which an oxide film is formed on the steel sheet side by heating in the atmosphere at a temperature of 10 ° C. for 10 minutes to 4 hours.
Steel plate or plated steel plate has a thickness of 0.3-3.0 μm
9. A steel sheet or a plated steel sheet coated with the resin film according to claim 8 is used, or the steel sheet or the plated steel sheet according to claim 8 is a steel sheet or a plated sheet coated with a resin film having a thickness of 2.5 μm or more in which conductive particles are dispersed. A steel plate is used.
【０００８】[0008]
【作用】本発明によれば、２ステップ通電や大電流を必
要とせずに、高い継手強度が得られる。According to the present invention, high joint strength can be obtained without requiring two-step energization or large current.
【０００９】また、本発明による厚さ０．３〜３．０μ
ｍの樹脂膜が鋼板側に塗布された２層の鉄／アルミニウ
ムクラッド材あるいは、厚さ０．３〜３．０μｍの樹脂
膜が塗布された鋼板あるいはメッキ鋼板あるいは、厚さ
０．３〜３．０μｍの酸化膜が鋼板側に形成された鉄／
アルミニウムクラッド材では樹脂膜または酸化膜が部分
的に欠陥を含むことにより、また、鋼板の面粗さやうね
りのために、局部的に樹脂が被覆されていない部分また
は樹脂膜厚あるいは酸化膜厚が薄い（平均厚の１／２以
下）部分があるため、溶接時の加圧によって、一部金属
同士の接触によって部分的に通電が生じるため、あるい
は、導電性粒子が分散された厚さ２．５μｍ以上の樹脂
膜が鋼板側に塗布された２層の鉄／アルミニウムクラッ
ド材、あるいは、導電性粒子が分散された厚さ２．５μ
ｍ以上の樹脂膜が塗布された鋼板あるいはメッキ鋼板で
は導電性粒子同士の接触によって、部分的に通電が生じ
て、鋼板あるいはメッキ鋼板側の電流密度を上げて発熱
量を高める。但し、導電性粒子を含まない場合の樹脂膜
の厚さあるいは酸化膜の厚さは０．５μｍ〜１．５μｍ
位が望ましい。The thickness according to the present invention is 0.3 to 3.0 μm.
2 layers of iron / aluminum clad material coated with a resin film of m on the steel plate side, or a steel plate coated with a resin film of 0.3 to 3.0 μm or a plated steel plate, or a thickness of 0.3 to 3 Iron with an oxide film of 0.0 μm formed on the steel plate side /
In the aluminum clad material, the resin film or oxide film partially contains defects, and due to the surface roughness and waviness of the steel sheet, the part where the resin is not locally coated or the resin film thickness or oxide film thickness is Since there is a thin portion (1/2 or less of the average thickness), the current is partially applied due to the pressure applied at the time of welding, or the thickness where the conductive particles are dispersed 2. Two layers of iron / aluminum clad material coated with a resin film of 5 μm or more on the steel plate side, or a thickness of 2.5 μm in which conductive particles are dispersed
In a steel plate or a plated steel plate coated with a resin film having a thickness of m or more, the conductive particles come into contact with each other to partially generate electricity, thereby increasing the current density on the steel plate or plated steel plate side and increasing the amount of heat generation. However, the thickness of the resin film or the oxide film when the conductive particles are not included is 0.5 μm to 1.5 μm.
Rank is desirable.
【００１０】この局部通電によって発熱量を高めること
により、低電流域（７．５〜１１．０ｋＡ）における鋼
板あるいはメッキ鋼板側でのナゲットの生成・成長を助
長させる。また、この時の発熱は熱伝導によってアルミ
ニウム系材料の板側にも影響を及ぼすため、結果として
アルミニウム側のナゲットの生成・成長をも助長させ、
溶接部の強度を向上させる。すなわち、引張試験時の破
断はアルミニウム板側で起こるため、アルミニウム側の
ナゲットが成長すれば継手強度も向上する。By increasing the amount of heat generated by this local energization, generation and growth of nuggets on the steel plate or plated steel plate side in the low current region (7.5 to 11.0 kA) is promoted. Further, the heat generated at this time also affects the plate side of the aluminum-based material due to heat conduction, and as a result, promotes the generation and growth of the nugget on the aluminum side.
Improve the strength of the weld. That is, since the fracture during the tensile test occurs on the aluminum plate side, the joint strength is improved as the aluminum side nugget grows.
【００１１】従って、低電流域でも高い継手強度を得る
ことができれば、幅広い電流域で高い継手強度を維持す
ることが可能となり、アルミニウムやメッキの溶着量の
少ない電流域（７．５〜１３．５ｋＡ）で溶接を行え
る。それによって、アルミニウム板側での電極へのアル
ミニウムの溶着量あるいはメッキ鋼板側での電極へのメ
ッキの溶着量を最小限に防ぐことができる。Therefore, if a high joint strength can be obtained even in a low current region, it is possible to maintain a high joint strength in a wide current region, and a current region (7.5 to 13. Welding can be performed at 5 kA). As a result, the amount of aluminum deposited on the electrode on the aluminum plate side or the amount of plated deposit on the electrode on the plated steel plate side can be minimized.
【００１２】また、鉄／アルミニウムクラッド材の鋼板
側、鋼板あるいはメッキ鋼板への樹脂膜の厚さを０．３
〜３．０μｍもしくは、導電性粒子が分散された樹脂膜
の厚さを２．５μｍ以上としたのは、これより薄いと電
流を集中させる効果が少なくなり、また、前者の場合、
これより厚いと導通しなくなるためである。樹脂として
は、アクリル系、エポキシ系、ポリ系、塩化ビニル系な
どの非導電性のものであれば何でも良い。また、導電性
粒子はＮｉ粉、Ｆｅ粉等、導電性の良いものならよい。
塗布法は、ロールコートやスプレー法のように均一に塗
布できるものであれば何でも良い。Further, the thickness of the resin film on the steel plate side of the iron / aluminum clad material, the steel plate or the plated steel plate is 0.3.
.About.3.0 .mu.m or the thickness of the resin film in which the conductive particles are dispersed is set to 2.5 .mu.m or more. If the thickness is less than this, the effect of concentrating the current is reduced, and in the case of the former,
This is because if it is thicker than this, it will not conduct electricity. The resin may be any non-conductive resin such as acrylic, epoxy, poly, or vinyl chloride. The conductive particles may be Ni powder, Fe powder, or the like, as long as they have good conductivity.
Any coating method may be used as long as it can be uniformly coated, such as roll coating and spraying.
【００１３】また、酸化膜形成の際、熱処理温度を４５
０℃より高い温度で加熱すると鉄／アルミニウム界面で
金属間化合物が生成し、クラッド材が剥離してしまうの
で、それより低い温度で熱処理を行うのが良い。溶接荷
重は板厚に合わせて、２．４５ｔｋＮ（但し、ｔは鋼
板、メッキ鋼板、クラッド材、アルミニウム板の中で一
番薄い板の板厚）を目安に決めればよい（例えば、１．
４７ｋＮ〜３．４３ｋＮ程度）。これ以外の荷重では、
例えばこれより荷重が低くなると溶接電流が不安定にな
るためであり、また、これより荷重が高くなると、接触
抵抗が低くなって発熱量が低下したり、電極との接触に
よる鋼板、メッキ鋼板あるいはアルミニウム板側の変形
が大きくなりすぎるためである。溶接電流を７．５〜１
５．５ｋＡとしたのは、これより低い電流では継手強度
が低く、また、これより高い電流では、アルミニウムあ
るいはメッキの溶着量が極度に増えるためである。溶接
時間を８０〜２８０ｍｓとしたのは、これより短時間で
は、ナゲットの成長が不十分で強度が低く、また、これ
より長い時間をかけても強度があまり変化しないからで
ある。実際には、強度の安定性より１４０〜２４０ｍｓ
が望ましい。なお、溶接に用いるクラッド材の厚さは、
厚さが厚くなり過ぎると、施工上不都合であったりする
ので、０．２〜１．２ｍｍが望ましい。また、メッキの
種類は導伝性のものならどれでも可能（Ｚｎ、Ｚｎ−Ｆ
ｅ、Ｚｎ−Ａｌ、Ｚｎ−Ｎｉ等）であるが、目付量は両
面で１００／１００ ｇ／ｍ2以下のものが望ましい。
なお、本溶接で用いる鉄／アルミニウムクラッド材は、
冷延法、爆着法、ＨＩＰ法、拡散接合法など冶金学的に
接合されたものなら、いずれの方法で製造されていても
よい。When forming the oxide film, the heat treatment temperature is set to 45.
When heated at a temperature higher than 0 ° C., an intermetallic compound is generated at the iron / aluminum interface and the clad material is peeled off. Therefore, it is preferable to perform the heat treatment at a temperature lower than that. The welding load may be determined according to the plate thickness by using 2.45 tkN (where t is the thinnest plate thickness among steel plate, plated steel plate, clad material, and aluminum plate) as a guide (for example, 1.
47 kN to 3.43 kN). For other loads,
This is because, for example, when the load is lower than this, the welding current becomes unstable, and when the load is higher than this, the contact resistance decreases and the amount of heat generation decreases, or the steel plate, plated steel plate or This is because the deformation on the aluminum plate side becomes too large. Welding current 7.5-1
The reason why the current is 5.5 kA is that the joint strength is low at a current lower than this, and the amount of aluminum or plating deposited is extremely increased at a current higher than this. The reason why the welding time is set to 80 to 280 ms is that the nugget growth is insufficient and the strength is low in a shorter time, and the strength does not change much even if a longer time is exceeded. Actually, the stability of intensity is 140 ~ 240ms
Is desirable. The thickness of the clad material used for welding is
If the thickness becomes too thick, it may be inconvenient in construction, so 0.2 to 1.2 mm is desirable. In addition, any kind of plating can be used as long as it is conductive (Zn, Zn-F
e, Zn-Al, Zn-Ni, etc.), but the basis weight is preferably 100/100 g / m 2 or less on both sides.
The iron / aluminum clad material used in this welding is
It may be manufactured by any method as long as it is metallurgically bonded such as a cold rolling method, a bombardment method, a HIP method and a diffusion bonding method.
【００１４】[0014]
（第１の実施例）図１（ａ），（ｂ）は本発明の各実施
例の概略を説明するための断面図である。(First Embodiment) FIGS. 1A and 1B are sectional views for explaining the outline of the respective embodiments of the present invention.
【００１５】図１（ａ）に示すように、厚さ０．３９ｍ
ｍの冷延鋼板２と厚さ０．４０ｍｍのアルミニウム板３
（Ａ１０５０）からなる３０×３０×０．７９ｍｍの鉄
／アルミニウム２層のクラッド材４の鉄側に、ロールコ
ート法で厚さ１．０μｍのエポキシ系樹脂膜６ａを塗布
し、この樹脂膜６が塗布されたクラッド材４の鉄側に３
０×６０×０．８０ｍｍの冷延鋼板１を配置し、また、
アルミニウム側に３０×６０×１．００ｍｍのアルミニ
ウム板５（Ａ５０５２）を配置して、交流型の溶接機で
スポット溶接を行った。As shown in FIG. 1A, the thickness is 0.39 m.
m cold rolled steel plate 2 and 0.40 mm thick aluminum plate 3
An epoxy resin film 6a having a thickness of 1.0 μm is applied by a roll coating method to the iron side of a clad material 4 of 30 × 30 × 0.79 mm iron / aluminum two layers made of (A1050). 3 on the iron side of the clad material 4 coated with
The cold rolled steel plate 1 of 0 × 60 × 0.80 mm is arranged, and
An aluminum plate 5 (A5052) having a size of 30 × 60 × 1.00 mm was arranged on the aluminum side, and spot welding was performed with an AC welding machine.
【００１６】また、図１（ｂ）に示すように、樹脂膜が
塗布されていない鉄／アルミニウム２層のクラッド材の
鉄側に、厚さ１．０μｍのエポキシ系樹脂膜６ｂが塗布
された３０×６０×０．８０ｍｍの冷延鋼板１を配置
し、また、アルミニウム側に３０×６０×１．００ｍｍ
のアルミニウム板５（Ａ５０５２）を配置してスポット
溶接をおこなった。結果を表１（試験Ｎｏ１〜Ｎｏ４お
よび試験Ｎｏ５〜Ｎｏ８）に示す。また、比較として樹
脂膜が塗布されていない鉄／アルミニウムクラッド材お
よび冷延鋼板を用いて同様のスポット溶接を行った結果
を表１（試験Ｎｏ９〜Ｎｏ１２）に示す。それぞれの溶
接電流における鉄側およびアルミニウム側のナゲット
径、引張せん断強さ、およびアルミニウムの電極への溶
着量の程度を表１に示す。樹脂膜が塗布された鉄／アル
ミニウムクラッド材あるいは冷延鋼板を用いた場合に
は、樹脂膜が塗布されていない場合と比較すると、いず
れの場合も低電流（例えば８．５ｋＡ）で大きなナゲッ
トが形成されており、引張せん断強さも大きな値を示し
ていた。なお、引張せん断試験時には、破断がアルミニ
ウム板５内で起こった。すなわち樹脂膜を塗布した場合
には塗布しない場合に比べて、幅広い電流範囲で高い継
手強度を得ることが可能であった。また、樹脂膜が塗布
されていない場合には、高い強度を得るためには高い電
流を要し、その結果、その時のアルミニウムの溶着量は
多くなったが、樹脂膜を塗布した場合には、同じ強度を
得るための電流値が低いため、即ち、アルミニウムの溶
着量を最小限に抑え、継手の強度を確保することが可能
となる。 （第２の実施例）第１の実施例において、図１（ａ）に
示すように、樹脂膜６ａが塗布された鉄／アルミニウム
２層クラッド材４の鋼板側に３０×６０×０．８０ｍｍ
の亜鉛メッキ鋼板１（両面メッキ材、目付量；６０／６
０ ｇ／ｍ2）を配置し、また、アルミニウム側に３０
×６０×１．００ｍｍのアルミニウム板５（Ａ５０５
２）を配置して、交流型の溶接機でスポット溶接を行っ
た。また、図１（ｂ）に示すように、樹脂膜が塗布され
ていない鉄／アルミニウム２層クラッド材の鉄側に厚さ
１．５μｍの樹脂膜６ｂが塗布された３０×６０×０．
８０ｍｍの亜鉛メッキ鋼板１（両面メッキ材、目付量；
６０／６０ ｇ／ｍ2）を配置し、また、アルミニウム
側に３０×６０×１．００ｍｍのアルミニウム板５（Ａ
５０５２）を配置して、スポット溶接を行った。結果を
表１（試験Ｎｏ１３〜Ｎｏ１６および試験Ｎｏ１７〜Ｎ
ｏ２０）に示す。また、比較として、樹脂膜が塗布され
ていない鉄／アルミニウムクラッド材および亜鉛メッキ
鋼板を用いて同様のスポット溶接を行った結果を表１
（試験Ｎｏ２１〜Ｎｏ２４）に示す。それぞれの溶接電
流におけるナゲット径、引張せん断強さ、メッキおよび
アルミニウムの電極への溶着量の程度を同様に表１に示
す。樹脂膜が塗布された鉄／アルミニウムクラッド材お
よびメッキ鋼板を用いた場合には、樹脂膜が塗布されて
いない場合と比較すると、いずれの場合もナゲットが形
成される電流値が低下しており、また、低電流で大きな
ナゲットが形成され、引張せん断強さも大きな値を示し
ていた。すなわち樹脂膜を塗布した場合には、塗布しな
い場合に比べて、幅広い電流範囲で高い継手強度を得る
ことが可能であった。Further, as shown in FIG. 1B, an epoxy resin film 6b having a thickness of 1.0 μm is applied to the iron side of the iron / aluminum two-layer clad material to which the resin film is not applied. The cold rolled steel sheet 1 of 30 × 60 × 0.80 mm is arranged, and 30 × 60 × 1.00 mm is placed on the aluminum side.
The aluminum plate 5 (A5052) was placed and spot welding was performed. The results are shown in Table 1 (test No1 to No4 and test No5 to No8). For comparison, Table 1 (Test Nos. 9 to 12) shows the results of similar spot welding using an iron / aluminum clad material and a cold-rolled steel sheet to which a resin film has not been applied. Table 1 shows the nugget diameters on the iron side and the aluminum side, the tensile shear strength, and the extent of the amount of aluminum deposited on the electrodes at each welding current. When an iron / aluminum clad material coated with a resin film or a cold-rolled steel sheet is used, a large nugget is produced at a low current (for example, 8.5 kA) in both cases as compared with the case where the resin film is not coated. It was formed, and the tensile shear strength also showed a large value. During the tensile shear test, fracture occurred inside the aluminum plate 5. That is, when the resin film was applied, it was possible to obtain higher joint strength in a wider current range than when the resin film was not applied. Further, when the resin film is not applied, a high current is required to obtain high strength, and as a result, the amount of aluminum deposited at that time is large, but when the resin film is applied, Since the current value for obtaining the same strength is low, that is, it is possible to minimize the amount of aluminum deposited and ensure the strength of the joint. (Second Embodiment) In the first embodiment, as shown in FIG. 1A, the steel / aluminum two-layer clad material 4 coated with the resin film 6a has a steel plate side of 30 × 60 × 0.80 mm.
Galvanized steel sheet 1 (double-sided plated material, basis weight: 60/6
0 g / m 2 ), and on the aluminum side 30
Aluminum plate 5 (A505 x 60 x 1.00 mm)
2) was arranged and spot welding was performed using an AC welding machine. Further, as shown in FIG. 1 (b), a resin film 6b having a thickness of 1.5 μm is applied to the iron side of the iron / aluminum two-layer clad material to which the resin film is not applied.
80 mm galvanized steel sheet 1 (double-sided plated material, basis weight;
60/60 g / m 2 ), and an aluminum plate 5 (A of 30 × 60 × 1.00 mm) on the aluminum side.
5052) was arranged and spot welding was performed. The results are shown in Table 1 (test No13 to No16 and test No17 to N).
o20). In addition, as a comparison, the results of performing similar spot welding using an iron / aluminum clad material not coated with a resin film and a galvanized steel sheet are shown in Table 1.
(Test Nos. 21 to 24). Table 1 also shows the nugget diameter, the tensile shear strength, the degree of plating, and the amount of aluminum deposited on the electrode at each welding current. In the case of using the iron / aluminum clad material coated with the resin film and the plated steel sheet, the current value at which the nugget is formed is lower in both cases as compared with the case where the resin film is not coated, Moreover, a large nugget was formed at a low current, and the tensile shear strength also showed a large value. That is, when the resin film was applied, it was possible to obtain higher joint strength in a wider current range than when the resin film was not applied.
【００１７】また、樹脂膜が塗布されていない場合に
は、高い強度を得るためにには高い電流を要し、その結
果、その時のメッキおよびアルミニウムの溶着量は多く
なったが、樹脂膜が塗布された鉄／アルミニウムクラッ
ド材およびメッキ鋼板を用いた場合には、同じ強度を得
るための電流値が低いため、メッキおよびアルミニウム
の溶着量が少ない電流範囲で溶接することが可能であ
る。即ち、メッキおよびアルミニウムの溶着量を最小限
に抑え、継手の強度を確保することが可能となる。な
お、メッキ鋼板側に樹脂を塗布する場合には、通電によ
ってメッキが溶融し、部分通電から全面通電へ移行しや
すくなるため、樹脂は厚めに塗布する方が望ましい。If the resin film is not applied, a high current is required to obtain high strength, and as a result, the amount of plating and aluminum deposition at that time is large, but the resin film When the coated iron / aluminum clad material and the plated steel sheet are used, the current value for obtaining the same strength is low, so that welding can be performed in the current range in which the amount of plating and aluminum deposition is small. That is, it is possible to minimize the amount of plating and aluminum deposition and to secure the strength of the joint. When the resin is applied to the plated steel sheet side, it is preferable to apply the resin thicker because the plating is melted by energization and the transition from partial energization to full-surface energization becomes easy.
【００１８】また、内部に導電性粒子が分散された厚さ
２．５μｍ以上の樹脂膜が鋼板側に塗布された２層の鉄
／アルミニウムクラッド材あるいは導電性粒子の分散さ
れた厚さ２．５μｍ以上の樹脂膜が塗布された鋼板ある
いはメッキ鋼板に関しての実施例は省略したが、前述の
実施例で述べたと同じような効果を奏することは勿論で
ある。 （第３の実施例）図２は本発明の一実施例の概略を説明
するための断面図である。Further, a two-layer iron / aluminum clad material in which a conductive film-dispersed resin film having a thickness of 2.5 μm or more is applied to the steel plate side or a dispersed thickness of conductive particles of 2. Although an example of a steel plate or a plated steel plate coated with a resin film having a thickness of 5 μm or more is omitted, it is needless to say that the same effects as those described in the above-mentioned embodiments are obtained. (Third Embodiment) FIG. 2 is a sectional view for explaining the outline of an embodiment of the present invention.
【００１９】図２において、厚さ０．３９ｍｍの冷延鋼
板１２と厚さ０．４０ｍｍのアルミニウム板１３（Ａ１
０５０）からなる３０×３０×０．７９ｍｍの鉄／アル
ミニウム２層のクラッド材１４を大気中で４５０℃、３
０分の条件で加熱し、酸化膜７を形成させた。このクラ
ッド材１４の鋼板側に図１に示すように、３０×６０×
０．８０ｍｍの冷延鋼板１１を配置し、また、アルミニ
ウム側に３０×６０×１．００ｍｍのアルミニウム板１
５（Ａ５０５２）を配置して、交流型溶接機でスポット
溶接を行った。また、クラッド材１４の鉄側に、冷延鋼
板の代わりに３０×６０×０．８０ｍｍの亜鉛メッキ鋼
板（両面メッキ材、目付量；６０／６０ｇ／ｍ2）を配
置して、スポット溶接を行った。結果を表２（試験Ｎｏ
１〜Ｎｏ４および試験Ｎｏ５〜Ｎｏ８）に示す。ただし
表２は、それぞれの溶接電流における鉄側およびアルミ
ニウム側のナゲット径、引張せん断強さ、メッキおよび
アルミニウムの電極へ溶着量の程度を示す。酸化膜が形
成された鉄／アルミニウムクラッド材を用いた場合に
は、いずれの場合も低電流（例えば８．５ｋＡ）で大き
なナゲットが形成されており、引張せん断強さも大きな
値を示していた。すなわち酸化膜を形成させた場合には
形成させない場合に比べて、幅広い電流範囲で高い継手
強度を得ることが可能であった。また、酸化膜が形成さ
れていないクラッド材を用いた場合には、高い強度を得
るためにには高い電流を要し、その結果、その時のアル
ミニウムおよびメッキの溶着量は多くなったが、酸化膜
が形成された鉄／アルミニウムクラッド材を用いた場合
には、同じ強度を得るための電流値が低いため、アルミ
ニウムおよびメッキの溶着量が少ない電流範囲（８．５
〜１３．５ｋＡ）で溶接することが可能であった。すな
わち、アルミニウムの溶着量を最小限に抑え、継手の強
度を確保することが可能となる。In FIG. 2, a cold rolled steel plate 12 having a thickness of 0.39 mm and an aluminum plate 13 (A1 having a thickness of 0.40 mm) are used.
050) 30 × 30 × 0.79 mm iron / aluminum two-layer clad material 14 in air at 450 ° C. for 3 days.
The film was heated under the condition of 0 minutes to form the oxide film 7. On the steel plate side of the clad material 14, as shown in FIG. 1, 30 × 60 ×
A cold rolled steel plate 11 of 0.80 mm is arranged, and an aluminum plate 1 of 30 × 60 × 1.00 mm is provided on the aluminum side.
5 (A5052) was arranged and spot welding was performed with an AC welding machine. Further, instead of the cold-rolled steel plate, a 30 × 60 × 0.80 mm zinc-plated steel plate (double-sided plated material, basis weight: 60/60 g / m 2 ) is arranged on the iron side of the clad material 14 for spot welding. went. The results are shown in Table 2 (Test No.
1 to No4 and tests No5 to No8). However, Table 2 shows the nugget diameter on the iron side and the aluminum side, the tensile shear strength, and the degree of welding of the plating and the aluminum to the electrode at each welding current. When the iron / aluminum clad material having the oxide film was used, a large nugget was formed at a low current (for example, 8.5 kA) in all cases, and the tensile shear strength also showed a large value. That is, when the oxide film was formed, it was possible to obtain high joint strength in a wider current range than when the oxide film was not formed. Further, when a clad material without an oxide film was used, a high current was required to obtain high strength, and as a result, the amount of aluminum and plating deposited at that time increased, but When the iron / aluminum clad material on which the film is formed is used, the current value for obtaining the same strength is low, so that the amount of aluminum and plating deposited is small in the current range (8.5
It was possible to weld at ~ 13.5 kA). That is, it is possible to minimize the amount of aluminum deposited and ensure the strength of the joint.
【００２０】[0020]
【発明の効果】以上説明した通り、本発明の異種金属の
抵抗溶接においては、厚さ０．３〜３．０μｍの樹脂膜
が鋼板側に塗布された２層の鉄／アルミニウムクラッド
材、もしくは、厚さ０．３〜３．０μｍの樹脂膜が鋼板
側に塗布された鋼板あるいはメッキ鋼板、または、導電
性粒子が分散された厚さ２．５μｍ以上の樹脂膜が鋼板
側に塗布された２層の鉄／アルミニウムクラッド材、も
しくは、導電性粒子が分散された厚さ２．５μｍ以上の
樹脂膜が塗布された鋼板あるいはメッキ鋼板を用いるこ
とにより、また、温度３５０〜４５０℃、時間１０分〜
４時間の条件で大気中加熱して鋼板側に酸化膜を形成さ
せた鉄／アルミニウムクラッド材をインサート材とする
ことにより、幅広い電流域で高い継手強度を維持し、か
つ電極へのアルミニウムまたはメッキの溶着量を最小限
に抑えることが可能になる。As described above, in resistance welding of dissimilar metals according to the present invention, a two-layer iron / aluminum clad material having a resin film having a thickness of 0.3 to 3.0 μm applied to the steel plate side, or A steel plate or a plated steel plate on which a resin film having a thickness of 0.3 to 3.0 μm is applied to the steel plate side, or a resin film having a thickness of 2.5 μm or more in which conductive particles are dispersed is applied to the steel plate side. By using a two-layer iron / aluminum clad material, or a steel sheet or a plated steel sheet coated with a resin film having conductive particles dispersed therein and having a thickness of 2.5 μm or more, a temperature of 350 to 450 ° C. and a time of 10 Min ~
By using the iron / aluminum clad material with the oxide film formed on the steel sheet side by heating in the atmosphere under the condition of 4 hours as an insert material, high joint strength is maintained in a wide current range and aluminum or plating is applied to the electrode. It becomes possible to minimize the amount of welding.
【００２１】[0021]
【表１】 [Table 1]
【００２２】[0022]
【表２】 [Table 2]
【図１】本発明の各実施例の概略を説明するための断面
図である。FIG. 1 is a cross-sectional view for explaining the outline of each embodiment of the present invention.
【図２】本発明の一実施例の概略を説明するための断面
図である。FIG. 2 is a sectional view for explaining the outline of an embodiment of the present invention.
１ 冷延鋼板またはメッキが施された冷延鋼板 ２ 鉄層 ３ アルミニウム層 ４ 鉄／アルミニウムクラッド材 ５ アルミニウム板 ６ 樹脂膜 ８ 電極 １１ 冷延鋼板またはメッキが施された冷延鋼板 １２ 鉄層 １３ アルミニウム層 １４ 鉄／アルミニウムクラッド材 １５ アルミニウム層 １７ 酸化膜 １８ 電極 1 Cold Rolled Steel Plate or Plated Cold Rolled Steel Plate 2 Iron Layer 3 Aluminum Layer 4 Iron / Aluminum Clad Material 5 Aluminum Plate 6 Resin Film 8 Electrode 11 Cold Rolled Steel Plate or Plated Cold Rolled Steel Plate 12 Iron Layer 13 Aluminum layer 14 Iron / aluminum clad material 15 Aluminum layer 17 Oxide film 18 Electrode
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 // Ｂ２３Ｋ 11/24 ４００ Ｂ２３Ｋ 103:20 ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 6 Identification code Internal reference number FI technical display location // B23K 11/24 400 B23K 103: 20
Claims (8)
ム系材料の板との間に、鋼板とアルミニウム系材料の板
からなる２層の鉄／アルミニウムクラッド材を同種材同
士が向かい合うようにインサートし、鋼板あるいはメッ
キ鋼板と、アルミニウム系材料の板とを１回の通電でス
ポット溶接する異種金属の抵抗溶接方法において、厚さ
０．３〜３．０μｍの樹脂膜が鋼板側に塗布された２層
の鉄／アルミニウムクラッド材を用い、溶接電流７．５
〜１５．５ｋＡ、溶接時間８０〜２８０ｍｓの条件で溶
接を行うことを特徴とする異種金属の抵抗溶接方法。1. A two-layer iron / aluminum clad material composed of a steel plate and a plate of an aluminum-based material is inserted between a steel plate or a plated steel plate and a plate of an aluminum-based material so that the same kind of material faces each other, and a steel plate Alternatively, in a resistance welding method for dissimilar metals in which a plated steel plate and a plate made of an aluminum-based material are spot-welded with one energization, a two-layer resin film having a thickness of 0.3 to 3.0 μm is applied to the steel plate side. Welding current 7.5 using iron / aluminum clad material
A resistance welding method for dissimilar metals, characterized in that welding is performed under conditions of ˜15.5 kA and a welding time of 80 to 280 ms.
ム系材料の板との間に鋼板とアルミニウム系材料の板か
らなる２層の鉄／アルミニウムクラッド材を同種材同士
が向かい合うようにインサートし、鋼板あるいはメッキ
鋼板と、アルミニウム系材料の板とを１回の通電でスポ
ット溶接する異種金属の抵抗溶接方法において、厚さ
０．３〜３．０μｍの樹脂膜が片面または両面に塗布さ
れた前記鋼板あるいはメッキ鋼板を用い、溶接電流７．
５〜１５．５ｋＡ、溶接時間８０〜２８０ｍｓの条件で
溶接を行うことを特徴とする異種金属の抵抗溶接方法。2. A steel plate or a plated steel plate, and a plate made of an aluminum-based material, a two-layer iron / aluminum clad material made of a steel plate and a plate made of an aluminum-based material is inserted so that the same kind of materials face each other. In the resistance welding method for dissimilar metals, in which a plated steel plate and a plate made of an aluminum-based material are spot-welded with one energization, the steel plate coated with a resin film having a thickness of 0.3 to 3.0 μm on one side or both sides, or Welding current 7.
A resistance welding method for dissimilar metals, characterized in that welding is performed under the conditions of 5 to 15.5 kA and a welding time of 80 to 280 ms.
ム系材料の板との間に、鋼板とアルミニウム系材料の板
からなる２層の鉄／アルミニウムクラッド材を同種材同
士が向かい合うようにインサートし、鋼板あるいはメッ
キ鋼板と、アルミニウム系材料の板とを１回の通電でス
ポット溶接する異種金属の抵抗溶接方法において、温度
３５０〜４５０℃、時間１０分〜４時間の条件で大気中
加熱して鋼板側に酸化膜を形成させた鉄／アルミニウム
クラッド材を用い、溶接電流７．５〜１５．５ｋＡ、溶
接時間８０〜２８０ｍｓの条件で溶接を行うことを特徴
とする異種金属の抵抗溶接方法。3. A steel plate or a plated steel plate, and a plate made of an aluminum-based material, a two-layer iron / aluminum clad material made of a steel plate and a plate made of an aluminum-based material is inserted so that the same kind of material faces each other. Alternatively, in a resistance welding method for dissimilar metals in which a plated steel plate and a plate made of an aluminum-based material are spot-welded with one energization, the steel plate side is heated in the atmosphere under the conditions of a temperature of 350 to 450 ° C. and a time of 10 minutes to 4 hours. 1. A resistance welding method for dissimilar metals, which comprises using an iron / aluminum clad material having an oxide film formed thereon and performing welding under conditions of a welding current of 7.5 to 15.5 kA and a welding time of 80 to 280 ms.
ム系材料の板との間に、鋼板とアルミニウム系材料の板
からなる２層の鉄／アルミニウムクラッド材を同種材同
士が向かい合うようにインサートし、鋼板あるいはメッ
キ鋼板と、アルミニウム系材料の板とを溶接電流７．５
〜１５．５ｋＡ、溶接時間８０〜２８０ｍｓの条件で溶
接を行う際、インサートする２層の鉄／アルミニウムク
ラッド材は厚さ０．３〜３．０μｍの樹脂膜が鋼板側に
塗布された２層の鉄／アルミニウムクラッド材であるこ
とを特徴とする抵抗溶接用材料。4. A steel plate or a plated steel plate and a plate made of an aluminum-based material, two layers of iron / aluminum clad material made of a steel plate and a plate made of an aluminum-based material are inserted so that the same kind of material faces each other. Alternatively, a galvanized steel plate and a plate made of an aluminum material are welded with a welding current of 7.5.
When welding is performed under the conditions of ˜15.5 kA and welding time of 80 to 280 ms, the two layers of iron / aluminum clad material to be inserted are two layers in which a resin film having a thickness of 0.3 to 3.0 μm is applied to the steel plate side. A material for resistance welding, characterized by being an iron / aluminum clad material.
ム系材料の板との間に、鋼板とアルミニウム系材料の板
からなる２層の鉄／アルミニウムクラッド材を同種材同
士が向かい合うようにインサートし、鋼板あるいはメッ
キ鋼板と、アルミニウム系材料の板とを溶接電流７．５
〜１５．５ｋＡ、溶接時間８０〜２８０ｍｓの条件で溶
接を行う際、インサートする２層の鉄／アルミニウムク
ラッド材は、導電性粒子が分散された厚さ２．５μｍ以
上の樹脂膜が鋼板側に塗布された２層の鉄／アルミニウ
ムクラッド材であることを特徴とする抵抗溶接用材料。5. A steel plate or a plated steel plate, and a plate made of an aluminum-based material, a two-layer iron / aluminum clad material made of a steel plate and a plate made of an aluminum-based material is inserted so that the same kind of material faces each other. Alternatively, a galvanized steel plate and a plate made of an aluminum material are welded with a welding current of 7.5.
When welding is performed under the conditions of ˜15.5 kA and welding time 80 to 280 ms, the two-layer iron / aluminum clad material to be inserted has a resin film with a thickness of 2.5 μm or more in which conductive particles are dispersed on the steel plate side. A resistance welding material, which is a coated two-layer iron / aluminum clad material.
ム系材料の板との間に鋼板とアルミニウム系材料の板か
らなる２層の鉄／アルミニウムクラッド材をを、同種材
同士が向かい合うようにインサートし、鋼板あるいはメ
ッキ鋼板とアルミニウム系材料の板とを溶接電流７．５
〜１５．５ｋＡ、溶接時間８０〜２８０ｍｓの条件で溶
接を行う際、インサートする２層の鉄／アルミニウムク
ラッド材は温度３５０〜４５０℃、時間１０分〜４時間
の条件で大気中加熱して鋼板側に酸化膜を形成させた２
層の鉄／アルミニウムクラッド材であることを特徴とす
る抵抗溶接用材料。6. A two-layer iron / aluminum clad material composed of a steel plate and a plate of an aluminum-based material is inserted between a steel plate or a plated steel plate and a plate of an aluminum-based material so that the same kind of material faces each other, Welding current 7.5 between steel plate or plated steel plate and aluminum material plate
When welding is performed under the conditions of ˜15.5 kA and welding time of 80 to 280 ms, the two-layer iron / aluminum clad material to be inserted is heated in the atmosphere under the conditions of a temperature of 350 to 450 ° C. and a time of 10 minutes to 4 hours. Oxide film formed on the side 2
A material for resistance welding, characterized in that it is a layered iron / aluminum clad material.
ム系材料の板との間に、鋼板とアルミニウム系材料の板
からなる２層の鉄／アルミニウムクラッド材を同種材同
士が向かい合うようにインサートし、鋼板あるいはメッ
キ鋼板と、アルミニウム系材料の板とを溶接電流７．５
〜１５．５ｋＡ、溶接時間８０〜２８０ｍｓの条件で溶
接を行う際、前記鋼板あるいはメッキ鋼板は、厚さ０．
３〜３．０μｍの樹脂膜が片面または両面に塗布された
鋼板あるいはメッキ鋼板であることを特徴とする抵抗溶
接用材料。7. A steel plate or a plated steel plate, and a plate made of an aluminum material, a two-layer iron / aluminum clad material made of a steel plate and a plate made of an aluminum material is inserted so that the same kind of materials face each other. Alternatively, a galvanized steel plate and a plate made of an aluminum material are welded with a welding current of 7.5.
When welding is performed under the conditions of ˜15.5 kA and welding time 80 to 280 ms, the steel sheet or plated steel sheet has a thickness of 0.
A resistance welding material, which is a steel plate or a plated steel plate having a resin film of 3 to 3.0 μm applied to one side or both sides.
ム系材料の板との間に、鋼板とアルミニウム系材料の板
からなる２層の鉄／アルミニウムクラッド材を同種材同
士が向かい合うようにインサートし、鋼板あるいはメッ
キ鋼板と、アルミニウム系材料の板とを溶接電流７．５
〜１５．５ｋＡ、溶接時間８０〜２８０ｍｓの条件で溶
接を行う際、前記鋼板あるいはメッキ鋼板は、導電性粒
子が分散された厚さ２．５μｍ以上の樹脂膜が片面また
は両面に塗布された鋼板あるいはメッキ鋼板であること
を特徴とする抵抗溶接用材料。8. A steel plate or a plated steel plate, and a plate made of an aluminum-based material, a two-layer iron / aluminum clad material made of a steel plate and a plate made of an aluminum-based material is inserted so that the same kind of material faces each other. Alternatively, a galvanized steel plate and a plate made of an aluminum material are welded with a welding current of 7.5.
˜15.5 kA and welding time 80 to 280 ms, the steel sheet or plated steel sheet is a steel sheet having conductive particles dispersed therein and a resin film having a thickness of 2.5 μm or more applied to one side or both sides. Alternatively, a resistance welding material characterized by being a plated steel sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5307035A JPH07132380A (en) | 1993-11-15 | 1993-11-15 | Resistance welding method of different kinds of metal and resistance welding material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5307035A JPH07132380A (en) | 1993-11-15 | 1993-11-15 | Resistance welding method of different kinds of metal and resistance welding material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07132380A true JPH07132380A (en) | 1995-05-23 |
Family
ID=17964261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5307035A Withdrawn JPH07132380A (en) | 1993-11-15 | 1993-11-15 | Resistance welding method of different kinds of metal and resistance welding material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07132380A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT413502B (en) * | 2003-08-12 | 2006-03-15 | Schweisstechnische Zentralanst | Welding steel and aluminum structural components by means of bimetal welding wire |
| WO2011070978A1 (en) * | 2009-12-10 | 2011-06-16 | 株式会社神戸製鋼所 | Process for production of steel plate/aluminum plate joint structure, and steel plate and aluminum plate produced by the process |
| CN110270750A (en) * | 2018-03-14 | 2019-09-24 | 通用汽车环球科技运作有限责任公司 | Resistance spot welding job stacking including steel workpiece and aluminium workpiece with steel plate |
-
1993
- 1993-11-15 JP JP5307035A patent/JPH07132380A/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT413502B (en) * | 2003-08-12 | 2006-03-15 | Schweisstechnische Zentralanst | Welding steel and aluminum structural components by means of bimetal welding wire |
| WO2011070978A1 (en) * | 2009-12-10 | 2011-06-16 | 株式会社神戸製鋼所 | Process for production of steel plate/aluminum plate joint structure, and steel plate and aluminum plate produced by the process |
| JP2011140067A (en) * | 2009-12-10 | 2011-07-21 | Kobe Steel Ltd | Process for production of steel plate/aluminum plate joint structure, and steel plate/aluminum plate joint structure produced by the process |
| GB2488056A (en) * | 2009-12-10 | 2012-08-15 | Kobe Steel Ltd | Process for production of steel plate/aluminum plate joint structure, and steel plate and aluminum plate produced by the process |
| CN102665996A (en) * | 2009-12-10 | 2012-09-12 | 株式会社神户制钢所 | Process for production of steel plate/aluminum plate joint structure, and steel plate and aluminum plate produced by the process |
| CN110270750A (en) * | 2018-03-14 | 2019-09-24 | 通用汽车环球科技运作有限责任公司 | Resistance spot welding job stacking including steel workpiece and aluminium workpiece with steel plate |
| US11065710B2 (en) | 2018-03-14 | 2021-07-20 | GM Global Technology Operations LLC | Resistance spot welding workpiece stack-ups having a steel workpiece and an aluminum workpiece with a steel plate |
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Legal Events
| Date | Code | Title | Description |
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| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20010130 |