JPH02284775A - Resistance welding method of coated steel plate and device therefor - Google Patents
Resistance welding method of coated steel plate and device thereforInfo
- Publication number
- JPH02284775A JPH02284775A JP1302290A JP30229089A JPH02284775A JP H02284775 A JPH02284775 A JP H02284775A JP 1302290 A JP1302290 A JP 1302290A JP 30229089 A JP30229089 A JP 30229089A JP H02284775 A JPH02284775 A JP H02284775A
- Authority
- JP
- Japan
- Prior art keywords
- coated steel
- welding
- temperature
- base material
- steel plate
- 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.)
- Pending
Links
- 238000003466 welding Methods 0.000 title claims abstract description 53
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 38
- 239000010959 steel Substances 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims description 12
- 239000000463 material Substances 0.000 claims abstract description 66
- 230000005611 electricity Effects 0.000 claims abstract description 3
- 238000003825 pressing Methods 0.000 claims 1
- 238000000576 coating method Methods 0.000 abstract description 33
- 239000011248 coating agent Substances 0.000 abstract description 32
- 238000002844 melting Methods 0.000 abstract description 11
- 230000008018 melting Effects 0.000 abstract description 11
- 230000020169 heat generation Effects 0.000 abstract description 3
- 239000010953 base metal Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/16—Resistance welding; Severing by resistance heating taking account of the properties of the material to be welded
- B23K11/163—Welding of coated materials
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Resistance Welding (AREA)
- Control Of Resistance Heating (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、被覆鋼板の抵抗熔接方法及びその装置に係
るもので、特に鍍金の厚さが厚い鍍金鋼板やクラッド（
ｃｌａｄ）鋼板等の被覆鋼板の抵抗熔接に適合な方法及
びその装置に係るものである。Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a method and apparatus for resistance welding coated steel sheets, and is particularly applicable to coated steel sheets with thick coatings and cladding (
The present invention relates to a method and apparatus suitable for resistance welding of coated steel plates such as clad steel plates.
（従来の技術）
鋼板等の構造材の耐蝕性能を向上させるために、鋼板に
鍍金または接合される被覆材としては、通常アルミニウ
ムや亜鉛、銅等が使用されるが、金属の腐食は電気化学
的作用であるので、母材の腐食を防止するための被覆材
の電低的な性質は母材である鋼板に比べて抵抗値が低い
のが普通である９ところが、第１図に示したように、こ
のような二枚の被覆鋼板Ｓを相互被覆材Ｃ側を突き合わ
せて抵抗熔接しようとする場合には、母材Ｐと被覆材Ｃ
の抵抗値が異なるので、熔接機のチップＷによって加圧
通電された場合に発生される発熱量が各々異なるように
なる（Ｑ＝０．２４ＲＸｉ２Ｑは発熱量、Ｒは抵抗値、
ｉは電流）。(Prior art) In order to improve the corrosion resistance of structural materials such as steel plates, aluminum, zinc, copper, etc. are usually used as coating materials that are plated or bonded to steel plates. Therefore, the resistance value of the coating material used to prevent corrosion of the base metal is usually lower than that of the steel plate as the base metal.9 However, as shown in Figure 1, In this way, when attempting to resistance weld two such coated steel plates S by abutting the coating material C side against each other, the base material P and the coating material C are
Since the resistance values of are different, the amount of heat generated when pressurized and energized by the tip W of the welding machine is different (Q=0.24RXi2Q is the amount of heat generated, R is the resistance value,
i is current).
即ち、第２図で見るように、抵抗が大きい母材Ｐは発熱
量が大きいので、温度が急上昇して熔融温度Ｔｐに至る
ことになり、また、抵抗が小さい被覆材Ｃは発熱量が小
さいので、温度が母材Ｐより遅く上昇して熔融温度Ｔｃ
に至ることになる（未説明符号 ｔ、ｐ’、ｔｅ’ は
各々母材及び被覆材の熔融到達時間）。That is, as shown in Fig. 2, the base material P, which has a high resistance, has a large calorific value, so the temperature rises rapidly to reach the melting temperature Tp, and the coating material C, which has a low resistance, has a small calorific value. Therefore, the temperature rises slower than the base material P and the melting temperature Tc
(The unexplained symbols t, p', and te' are the melting times of the base material and coating material, respectively).
（発明が解決しようとする課題）
このような傾向は、被覆材Ｃの厚さが薄い場合には母材
Ｐから伝導される熱によって被覆材Ｃの温度上昇が促進
されるので別に問題はないが、鍍金の厚さが厚くなると
か、クラツド鋼板等の被覆材Ｃの厚さが大きくなる場合
には十分な熱伝導がなされないので、母材Ｐが先に熔融
し、被覆材Ｃが遅く熔融することになって、第３図に示
したように、溶入部Ｍが充分な深さにならない。したが
って、外見」二は熔接されているように見えるが、外力
が加えられる場合には、溶接部位が容易に破断されてし
まう問題点があった。そればかりでなく、このような問
題点を防止するために、被覆材Ｃが熔融されるまで溶接
時間を延長させる場合には、先ず、熔融された母材Ｐが
熔接機のチップＷの加圧によって甚だしく変形され、特
に熱影響部（ＨＡＺ ： Ｈｅａｔ Ａｆｆｅｃｔｅ
ｄ Ｚｏｎｅ）が拡大さ汎て、構造上の脆弱部となる問
題点があった。(Problem to be Solved by the Invention) This tendency is not a problem because when the thickness of the coating material C is thin, the temperature increase of the coating material C is promoted by the heat conducted from the base material P. However, when the thickness of the plating increases or the thickness of the coating material C such as a clad steel plate increases, sufficient heat conduction is not achieved, so the base material P melts first and the coating material C melts later. As a result, as shown in FIG. 3, the welded part M does not have a sufficient depth. Therefore, although it appears to be welded from the outside, there is a problem in that the welded portion is easily broken when external force is applied. In addition, in order to prevent such problems, if the welding time is extended until the coating material C is melted, the melted base material P must first be pressurized by the tip W of the welding machine. The heat affected zone (HAZ) is severely deformed by
There was a problem in that the area (d Zone) was expanded and became a weak part of the structure.
上述の従来の問題点を勘案して、本発明の目的は鍍金鋼
板やクラツド鋼板等の被ｒＩＩ鋼板の抵抗熔接において
、被覆材を母材より先に熔融させることにより、短時間
内に充分な溶入部を持つ抵抗熔接を施行し得る方法及び
これを実施するのに適合する装置を提供するものである
。In consideration of the above-mentioned conventional problems, the object of the present invention is to melt the coating material before the base material in resistance welding of RII steel sheets such as coated steel sheets and clad steel sheets, thereby achieving sufficient welding within a short time. It is an object of the present invention to provide a method for performing resistance welding with a weld and a device suitable for performing the same.
（課題を解決するための手段）
このような目的を達成するために、本発明の被覆鋼板の
抵抗熔接方法は、夫々母材と被覆材とからなった被覆鋼
板らを抵抗熔接する方法において、上記被覆鋼板らを加
圧及び通電させて発熱を開始させたのち、電源を遮断さ
せて上記母材の熱を被覆材に伝導させることによって被
覆材の温度を上昇させたのち、再び電源を供給して熔接
を完了することを特徴とする。(Means for Solving the Problems) In order to achieve such an object, the method for resistance welding coated steel sheets of the present invention includes the following steps: After the coated steel plates are pressurized and energized to start generating heat, the power is cut off and the heat of the base metal is conducted to the coating material to raise the temperature of the coating material, and then power is supplied again. It is characterized by completing the welding.
上述の本発明の方法を実施するのに適合する本発明の被
覆鋼板の抵抗熔接装置は、被覆鋼板を加圧及び通電させ
るチップと、該チップに電源を供給する熔接機回路とか
らなった被覆鋼板の抵抗熔接装置において、上記チップ
に電源を供給して熔接を開始したのちに所定の待機時間
の間、」二記電源の供給を遮断したのちに上記待機時間
の経過後、再び電源供給を開始させる電源制御回路を具
備してなることを特徴とする。The resistance welding apparatus for coated steel plates of the present invention, which is suitable for carrying out the method of the present invention described above, is a coated steel plate comprising a tip for pressurizing and energizing the coated steel plate, and a welding machine circuit for supplying power to the tip. In a resistance welding apparatus for steel plates, after supplying power to the chip and starting welding, the power supply is cut off for a predetermined standby time, and after the standby time has elapsed, the power supply is turned off again. It is characterized by comprising a power supply control circuit for starting.
（実施例）
以下に本発明の望ましい実施例を添付図面を参照して詳
細に説明する。(Embodiments) Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
本発明の抵抗熔接装置は、第４図に示したように、電圧
■の供給を受けて熔接される被覆鋼板Ｓの両側を加圧通
電させるチップＷと、このチップＷに適切な電流の電圧
を供給する熔接機回路と、この熔接機回路に電源の供給
を開始したのち所定時間経過後にこれを遮断し、所定時
間待機後に再び電源を供給する電源制御回路を具備して
構成される。As shown in FIG. 4, the resistance welding apparatus of the present invention includes a tip W which applies pressure and electricity to both sides of a coated steel plate S to be welded by receiving a voltage (2), and a voltage of an appropriate current to this tip W. The welding machine circuit includes a welding machine circuit that supplies power to the welding machine circuit, and a power supply control circuit that starts supplying power to the welding machine circuit, shuts off the supply after a predetermined period of time, and supplies power again after waiting for a predetermined period of time.
このような＠源制御回路は、例えば第５図に示したよう
に構成され得るが、制御部（ＣＯＮＴＲ）によって設定
された所定間隔のパルス信号を発生させるパルス発生部
（ＣＬＯＣＫ）と、このパルス発生部（ＣＬＯＣＫ）か
ら発生された所定個数のパルス信号を検知及び計数して
スイッチ部（ＳＷ）をＯＦＦさせる第１計数部（ＣＯＵ
ＮＴｌ）と、やはり、所定個数のパルス信号を検知及び
計数して上記スイッチ部（ＳＷ）をＯＮさせる第２計数
部（ＣＯＵＮＴ２）とから構成される。Such a source control circuit may be configured as shown in FIG. 5, for example, and includes a pulse generator (CLOCK) that generates a pulse signal at a predetermined interval set by a controller (CONTR), and a pulse generator (CLOCK) that generates a pulse signal at a predetermined interval set by a controller (CONTR), A first counting unit (COU) detects and counts a predetermined number of pulse signals generated from the generating unit (CLOCK) and turns off the switch unit (SW).
NTl) and a second counting section (COUNT2) that also detects and counts a predetermined number of pulse signals and turns on the switch section (SW).
ここで、第２計数部（ＣＯＵＮＴ２）と第１計敷部（Ｃ
ＯＵＮＴＩ）とが各々３１数するパルス信号の個数の差
異が、熔融到達時間（定量的には、待機時間＝パルス信
号の個数の差異Ｘパルス間隔）になる。この待機時間は
約０．０１秒乃至０゜５秒、望ましくは約０．１秒にな
り、被覆鋼板の構成材質及び厚さにより各々異なってセ
ツティングされるのが望ましい。Here, the second counting section (COUNT2) and the first counting section (C
The difference in the number of pulse signals, each of which is 31 in number (OUNTI), becomes the melting arrival time (quantitatively, waiting time = difference in the number of pulse signals x pulse interval). This waiting time is approximately 0.01 seconds to 0.5 seconds, preferably approximately 0.1 seconds, and is preferably set differently depending on the constituent material and thickness of the coated steel plate.
したがって、第１計数部（ＣＯＵＮＴＩ）及び第２計数
部（ＣＯＵＮＴ２）が各々Ａ１数するパルス信号の個数
、またはパルス発生部（ＣＬＯＣＫ）から発生されるパ
ルス間隔は、各々制御部（ｃＯＮＴＲ）によって調整さ
れ得るように構成するのが望ましい。Therefore, the number of pulse signals A1 produced by the first counting section (COUNTI) and the second counting section (COUNT2), or the pulse interval generated from the pulse generating section (CLOCK), are each adjusted by the control section (cONTR). It is desirable to configure the system so that it can be used.
上述の構成の本発明の抵抗熔接装置の作動を、第６図を
参照して説明すると次のようである。The operation of the resistance welding apparatus of the present invention having the above-mentioned structure will be explained with reference to FIG. 6 as follows.
先ず、熔接機のチップＷの間に熔接される被覆鋼板Ｓを
位置させ、熔接機回路に電圧Ｖを供給すると、熔接機の
チップＷは熔接される被覆鋼板Ｓを加圧通電させること
になり、これにより被覆鋼板Ｓの母材Ｐ及び被覆材Ｃは
、各々
Ｑ”０．２４Ｒｉ”の関係によって発熱を開始して温度
が上昇される（第６図参照）。First, the coated steel plate S to be welded is placed between the tips W of the welding machine, and a voltage V is supplied to the welding machine circuit, so that the tip W of the welding machine pressurizes and energizes the coated steel plate S to be welded. As a result, the base material P and the coating material C of the coated steel plate S each start to generate heat due to the relationship of Q"0.24Ri", and the temperature is increased (see FIG. 6).
上記電圧■の供給開始により、パルス発生部（ＣＬＯＣ
Ｋ）はセツティングされた所定パルス間隔のパルス信号
を発生させ、このパルス信号は各々第１計数部（ＣＯＵ
ＮＴＩ）及び第２計数部（ＣＯＵＮＴ２）に印加されて
各々の計数部が計数を開始する。With the start of the supply of the above voltage ■, the pulse generator (CLOC)
K) generates a pulse signal with a set predetermined pulse interval, and each of these pulse signals is sent to a first counting unit (COU).
NTI) and the second counting section (COUNT2), each counting section starts counting.
第１計数部（ＣＯＵＮＴＩ）が所定個数のパルスを計数
すると（即ち、溶接開始後、所定時間が経過するように
なると）、第１計数部（ＣＯＵＮＴｌ）は、スイッチ部
（ＳＷ）に電源遮断信号を印加させるようになり、これ
によりスイッチ部（ＳＷ）がＯＦＦされて熔接機のチッ
プＷに対する電力の供給が遮断され、これにより母材Ｐ
及び被覆材Ｃの発熱も中断される。When the first counting section (COUNTI) counts a predetermined number of pulses (that is, when a predetermined time has elapsed after the start of welding), the first counting section (COUNTI) sends a power cutoff signal to the switch section (SW). As a result, the switch section (SW) is turned OFF, and the power supply to the tip W of the welding machine is cut off.
And the heat generation of the covering material C is also interrupted.
即ち、第６図に温度（Ｔ□）まで温度が上昇されると、
上昇された母材Ｐは、発熱中断された待機時間Δｔの間
に、温度（Ｔ２）の被覆材Ｃに熱を伝導させて温度（Ｔ
３）に下降し、母材Ｐから熱の伝導を受けた被覆材Ｃは
温度（Ｔ３）に上昇するようになる。ここで、母材Ｐ及
び被覆材Ｃの温度がＴ、として均一化されるものとした
が、これは被覆材Ｃが母材Ｐから充分な熱伝達を受ける
と云う意味で、被覆材Ｃが母材Ｐからの伝導熱によって
充分に加熱されるとしたら、同一温度にならなくとも本
発明の構成には差し支えない。That is, when the temperature is raised to the temperature (T□) shown in Figure 6,
During the standby time Δt during which heat generation is interrupted, the elevated base material P conducts heat to the coating material C at the temperature (T2) and reaches the temperature (T2).
3), the coating material C receives heat conduction from the base material P and rises to temperature (T3). Here, it is assumed that the temperatures of the base material P and the coating material C are equalized as T, which means that the coating material C receives sufficient heat transfer from the base material P. As long as they are sufficiently heated by conductive heat from the base material P, there is no problem with the configuration of the present invention even if the temperatures are not the same.
溶接開始から継続的にパルス信号を計数してあった第２
計数部（ＣＯＵＮＴ２）が所定個数のパルス信号を計数
すると、スイッチ部（ＳＷ）に電源供給信号を印加させ
るようになり、これによりスイッチ部（ＳＷ）はＯＮさ
れて、再び熔接機のチップＷに電力供給を開始し、母材
Ｐ及び被覆材Ｃは再発熱を開始して温度が上昇される。The second pulse signal was continuously counted from the start of welding.
When the counting section (COUNT2) counts a predetermined number of pulse signals, it applies a power supply signal to the switch section (SW), which turns on the switch section (SW) and again applies the power supply signal to the tip W of the welding machine. Power supply is started, and the base material P and the coating material C start reheating and their temperatures are increased.
温度（Ｔ、）に上昇された被覆材Ｃは、熔融温度（Ｔｃ
）に先に到達されて熔融を開始し、次の母材Ｐが熔融温
度（Ｔｐ）に至ることになって熔融される（第６図のｔ
ｐ、ｔｃは、各々母材及び被覆材の熔融到達時間である
。）。The coating material C raised to a temperature (T, ) has a melting temperature (Tc
) and starts melting, and the next base material P reaches the melting temperature (Tp) and is melted (t in Figure 6).
p and tc are the melting time of the base material and the coating material, respectively. ).
即ち、相互溶接される被覆材Ｃ側が先に熔融されるので
、抵抗熔接が完了された溶接部位は、第７図に示したよ
うに熔入部Ｍが充分な深さを持つばかりでなく、熔接さ
れる被覆材Ｃが完全に熔融されるので完全な接合が可能
になる。That is, since the side of the covering material C to be mutually welded is melted first, the welded area where resistance welding is completed not only has a welded part M of sufficient depth as shown in FIG. Since the coating material C to be applied is completely melted, complete bonding is possible.
また、溶接完了に所要される時間も、従来には少なくと
も被覆材熔融に所要される時間（ｔｅ’）以上でなけれ
ばならないことに比べ、本発明においては、溶接過程中
に待機時間（Δｔ）があるにも拘わらず、母材の熔融に
所要される時間（ｔｐ）に減少される。Furthermore, the time required to complete welding must be longer than the time required to melt the coating material (te') in the past, but in the present invention, the waiting time (Δt) during the welding process However, the time required for melting the base material (tp) is reduced.
（発明の効果）
このように、本発明の被ｒ！ｉ１１板の抵抗熔接及び装
置によると、熔入部が充分な深さを持ち、完全熔融され
て完全溶接が行なわれるので、溶接品質が向上されるば
かりでなく、溶接所要時間も短縮されるので、サイクル
タイムの減少による生産性の向上と、入熱ｊｉ （ｈｅ
ａｔ １ｎｐｕｔ）の減少による強度上の欠陥の減少等
を期待し得る長所がある７(Effects of the Invention) In this way, the benefits of the present invention! According to the resistance welding and equipment for I11 plates, the welded part has sufficient depth and is completely melted to perform complete welding, which not only improves the welding quality but also shortens the welding time. Improved productivity due to reduced cycle time and reduced heat input (he
It has the advantage that it can be expected to reduce defects in strength due to the reduction in
第１図は被ｒ！！鋼板の抵抗熔接を示す概略側面図、第
２図は従来の方法及び装置を利用した抵抗熔接過程にお
いて、母材と被覆材の温度」二昇曲線図、第３図は従来
の方法及び装置によって抵抗熔接が完了された被覆鋼板
の熔接部の断面図、第４図は本発明の抵抗熔接装置の構
成を示す概略ブロック図、第５図は第４図における電源
制御回路の一構成例を示したブロック図、第６図は本発
明の方法及び装置を利用した抵抗熔接過程における母材
と被覆材との温度曲線図、第７図は本発明の方法及び装
置による抵抗熔接が完了された被［ｆｆ板の熔接部の断
面図である。
図中、符号Ｓ：被覆鋼板、Ｗ： （熔接部の）チップ（
ｔｉｐ） 、 Ｃ０ＮＴＲ：制御部、ＣＬＯＣＫ ：パ
ルス発生部、Ｃ０ＵＮＴＩ ：第１計数部、Ｃ０ＵＮＴ
２ ：第２計数部、ＳＷ：スイッチ部。
吋亥Figure 1 is covered! ! A schematic side view showing resistance welding of steel plates; Figure 2 is a temperature rise curve diagram of the base material and coating material during the resistance welding process using the conventional method and equipment; FIG. 4 is a schematic block diagram showing the configuration of the resistance welding apparatus of the present invention, and FIG. 5 shows an example of the configuration of the power supply control circuit in FIG. 4. FIG. 6 is a temperature curve diagram of the base material and coating material during the resistance welding process using the method and apparatus of the present invention, and FIG. [It is a cross-sectional view of the welded part of the ff board. In the figure, S: coated steel plate, W: chip (of welded part) (
tip), C0NTR: Control unit, CLOCK: Pulse generation unit, C0UNTI: First counting unit, C0UNT
2: second counting section, SW: switch section. Boar
Claims (1)
接する方法において、 上記被覆鋼板らを加圧及び通電させて発熱を開始させた
後、 電源を遮断させて上記母材の熱を被覆材に伝導させるこ
とによって被覆材の温度を上昇させた後、再び電源を供
給して熔接を完了することを特徴とする被覆鋼板の抵抗
熔接方法。 ２ 被覆鋼板を加圧及び通電させる熔接機のチップと、
該チップに電源を供給する熔接機回路からなった被覆鋼
板の抵抗熔接装置において、上記チップに電源を供給し
て熔接を開始した後に所定の待機時間の間、上記電源の
供給を遮断したのちに所定の待機時間の経過後に電源の
供給を再開させる電源制御回路を具備してなることを特
徴とする被覆鋼板の抵抗熔接装置。 ３ 前記電源制御回路が制御部によって設定された間隔
のパルス信号を発生させるパルス発生部と、上記パルス
信号が各々印加される第１計数部及び第２計数部と、上
記第１計数部及び第２計数部から発生された信号によっ
て各々ＯＦＦ及びＯＮされて上記電源を遮断及び供給す
るスイッチ部とで構成されたことを特徴とする請求項１
記載の被覆鋼板の抵抗熔接装置。[Scope of Claims] 1. A method of resistance welding coated steel plates each consisting of a base material and a covering material, which comprises applying pressure and electricity to the coated steel plates to start generating heat, and then cutting off the power supply. A method for resistance welding coated steel sheets, characterized in that the temperature of the coated material is increased by transmitting the heat of the base material to the coated material, and then power is supplied again to complete welding. 2. A welding machine tip that pressurizes and energizes the coated steel plate;
In a resistance welding device for coated steel plates, which is comprised of a welding machine circuit that supplies power to the chip, after supplying power to the chip and starting welding, the power supply is cut off for a predetermined standby time; 1. A resistance welding apparatus for coated steel sheets, comprising a power control circuit that restarts power supply after a predetermined standby time has elapsed. 3. A pulse generating section in which the power supply control circuit generates pulse signals at intervals set by the control section, a first counting section and a second counting section to which the pulse signals are respectively applied, and the first counting section and the second counting section. Claim 1 characterized in that it is comprised of a switch section that is turned off and on by signals generated from two counting sections to cut off and supply the power source, respectively.
A resistance welding device for coated steel sheets as described above.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR89-546 | 1989-01-19 | ||
| KR1019890000546A KR900011542A (en) | 1989-01-19 | 1989-01-19 | Resistance welding method of coated steel sheet and apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02284775A true JPH02284775A (en) | 1990-11-22 |
Family
ID=19283248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1302290A Pending JPH02284775A (en) | 1989-01-19 | 1989-11-22 | Resistance welding method of coated steel plate and device therefor |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPH02284775A (en) |
| KR (1) | KR900011542A (en) |
| GB (1) | GB2227198B (en) |
| MY (1) | MY105903A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2289020B (en) * | 1994-04-14 | 1997-07-30 | Seiko Epson Corp | Serial printer |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5921273A (en) * | 1982-07-26 | 1984-02-03 | Matsushita Electric Ind Co Ltd | Linear motor |
| JPS6021185A (en) * | 1983-07-18 | 1985-02-02 | Nippon Kokan Kk <Nkk> | Resistance spot welding method of laminated metallic plate having electrical insulating film |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1411196A (en) * | 1972-03-22 | 1975-10-22 | Oraltechnic Anstalt | Electrical resistance welding apparatus |
-
1989
- 1989-01-19 KR KR1019890000546A patent/KR900011542A/en not_active Application Discontinuation
- 1989-11-22 JP JP1302290A patent/JPH02284775A/en active Pending
-
1990
- 1990-01-12 MY MYPI90000053A patent/MY105903A/en unknown
- 1990-01-19 GB GB9001313A patent/GB2227198B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5921273A (en) * | 1982-07-26 | 1984-02-03 | Matsushita Electric Ind Co Ltd | Linear motor |
| JPS6021185A (en) * | 1983-07-18 | 1985-02-02 | Nippon Kokan Kk <Nkk> | Resistance spot welding method of laminated metallic plate having electrical insulating film |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2289020B (en) * | 1994-04-14 | 1997-07-30 | Seiko Epson Corp | Serial printer |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2227198B (en) | 1993-01-06 |
| GB9001313D0 (en) | 1990-03-21 |
| MY105903A (en) | 1995-02-28 |
| GB2227198A (en) | 1990-07-25 |
| KR900011542A (en) | 1990-08-01 |
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