CN102699507A - Spot-welding method for workpieces with coating layers - Google Patents
Spot-welding method for workpieces with coating layers Download PDFInfo
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- CN102699507A CN102699507A CN2012101997174A CN201210199717A CN102699507A CN 102699507 A CN102699507 A CN 102699507A CN 2012101997174 A CN2012101997174 A CN 2012101997174A CN 201210199717 A CN201210199717 A CN 201210199717A CN 102699507 A CN102699507 A CN 102699507A
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- spot welding
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Abstract
The invention provides a spot-welding method for workpieces with coating layers. A long reinforcement connection point sheet and a compensation sheet in a relay are provided with the coating layers, so that the spot-welding firmness is reduced, and potential hazards of unfirm welding and accidents exist. The key point is that: before spot-welding, a thick workpiece is put on stamping equipment; an annular bulge is processed at a welding spot position; and the bulge is 0.2 to 0.4 millimeter high. The spot-welding method has the advantages that welding is firm, and potential safety hazard is eliminated.
Description
Technical field
The present invention relates to a kind of method of welding, is the workpiece method welded together with two band coating specifically.
Background technology
The JYJXC-160/260 relay key component that my company produces is strengthened in the contact unit spot welding processing, comprises the operation that long reinforcement contact strip is spoted weld with the subsidy sheet.The long contact strip of strengthening is copper spare with the subsidy sheet, and at its plating nickel on surface.Because the fusing point of nickel metal is higher than the copper metal, if not removing coating does not carry out spot welding, then the firm degree of spot welding reduces, and has the hidden danger that welding is insecure, have an accident, and once electricity is engaged in Shanghai, and a spot welding to occur insecure and produce the obstructed situation of conduction for section.Along with increasing of this relay output, the hidden danger of this welding method grows with each passing day.If remove coating before the weldering, not only increase processing cost, and prolonged the process-cycle, the spot-wedling electrode of common silver contact can not satisfy coating spot welding requirement of mass production simultaneously.
Summary of the invention
For solving the problems of the technologies described above, the purpose of this invention is to provide a kind of band coating spot welding method.
The objective of the invention is to realize like this: before spot welding, the workpiece that one of them is thick is placed on the pressing equipment, and nest of punching press on the position of solder joint processes an annular protrusion around the nest, and protruding height h is 0.2～0.4mm.In high spot spot welding, make the contact of two workpiece, make into a little to contact by face and contacting of face with face, contact area is descended, local current intensity increases, and heat is concentrated, and forms weldering nuclear easily.
Compare with existing band coating spot-welding technology, good effect of the present invention is: seam is firm, has eliminated potential safety hazard; Compare with removing the coating spot-welding technology, good effect of the present invention is: saved and removed the coating operation, improved working (machining) efficiency.
The specific embodiment
Below provide embodiment, specify the present invention.
1, uses long contact strip and the subsidy sheet strengthened of spot welding of the present invention
(1) strengthen contact strip and subsidize in the sheet, it is thicker than the subsidy sheet to strengthen contact strip, so get long reinforcement contact strip, be placed on the pressing equipment, and annular protrusion of processing on the position of solder joint, protruding height is 0.3mm;
(2), will strengthen contact strip and the welding of subsidy sheet in high spot spot welding.
Use above method again spot welding six group leaders strengthen contact strip and subsidy sheet, amount to seven groups.
2, use existing band coating spot-welding technology spot welding three group leaders to strengthen contact strip and subsidy sheet.
3, the reinforcement contact strip that above ten assembly weldings is connected carries out tension test with the subsidy sheet.The tension test test result is (wherein sequence number 1-3 represents three groups that use the spot welding of existing band coating spot-welding technology respectively, and sequence number 4-10 represents seven groups that use spot welding of the present invention respectively) as follows:
| Sequence number | Tensile force/N | Failure mode | Remarks |
| 1 | 500 | Break away from | Do not do the convex annular starting point, weld 1 place. |
| 2 | 800 | Break away from | Do not do the convex annular starting point, weld 2 places; Below all be 2 place's annular protrusions. |
| 3 | 2 000 | Break away from | Spot welding and annular protrusion position deviation. |
| 4 | 1 100 | Break away from | The spot welding malposition. |
| 5 | 2 000 | Break away from | Spot welding and annular protrusion position deviation. |
| 6 | 2 000 | Break away from | AnnularProtruding too small. |
| 7 | 2 100 | Fracture | |
| 8 | 2 000 | Fracture | |
| 9 | 2 100 | Fracture | |
| 10 | 2 100 | Fracture |
Stretched experimental test, the spot welding workpiece of not doing annular protrusion is destroyed when 800N, and the destruction place shows as coating has weld mark, but does not form complete weldering nuclear.
Do the spot welding that improves technology, except No. 4, the not right sequence number in position, all greater than 2kN, failure mode shows as the fracture of subsidy sheet, spot welding place no change.
Phenolic moulding powder is invaded contrast test, uses in the spot welding workpiece of the present invention phenolic moulding powder less relatively.
Claims (2)
1. be with the coating spot welding method for one kind, it is characterized in that: before spot welding, the workpiece that one of them is thick is placed on the pressing equipment, annular protrusion of processing on the position of solder joint, and protruding height is 0.2～0.4mm.
2. according to the described band coating of claim 1 spot welding method, it is characterized in that:
(1) get the long contact strip of strengthening, be placed on the pressing equipment, annular protrusion of processing on the position of solder joint, protruding height is 0.3mm;
(2), will strengthen contact strip and the seam of subsidy sheet in high spot spot welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101997174A CN102699507A (en) | 2012-06-18 | 2012-06-18 | Spot-welding method for workpieces with coating layers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101997174A CN102699507A (en) | 2012-06-18 | 2012-06-18 | Spot-welding method for workpieces with coating layers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102699507A true CN102699507A (en) | 2012-10-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101997174A Pending CN102699507A (en) | 2012-06-18 | 2012-06-18 | Spot-welding method for workpieces with coating layers |
Country Status (1)
| Country | Link |
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| CN (1) | CN102699507A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109103401A (en) * | 2017-06-20 | 2018-12-28 | 矢崎总业株式会社 | welding structure |
| CN115213579A (en) * | 2022-06-22 | 2022-10-21 | 首钢集团有限公司 | Method and device for controlling salient points on surface of welding spots of coated steel plate |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3114030A (en) * | 1961-07-10 | 1963-12-10 | Ruskin Dev & Mfg Corp | Resistance welding |
| DE3605115A1 (en) * | 1986-02-18 | 1987-08-20 | Bbc Brown Boveri & Cie | Spot-welded joint between adjacent sheets and method of making the spot-welded joint |
| CN1746482A (en) * | 2004-09-10 | 2006-03-15 | 株式会社电装 | Common rail |
| CN101234453A (en) * | 2007-01-30 | 2008-08-06 | 通用电气公司 | Projection weld and method for creating the same |
-
2012
- 2012-06-18 CN CN2012101997174A patent/CN102699507A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3114030A (en) * | 1961-07-10 | 1963-12-10 | Ruskin Dev & Mfg Corp | Resistance welding |
| DE3605115A1 (en) * | 1986-02-18 | 1987-08-20 | Bbc Brown Boveri & Cie | Spot-welded joint between adjacent sheets and method of making the spot-welded joint |
| CN1746482A (en) * | 2004-09-10 | 2006-03-15 | 株式会社电装 | Common rail |
| CN101234453A (en) * | 2007-01-30 | 2008-08-06 | 通用电气公司 | Projection weld and method for creating the same |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109103401A (en) * | 2017-06-20 | 2018-12-28 | 矢崎总业株式会社 | welding structure |
| CN109103401B (en) * | 2017-06-20 | 2021-12-21 | 矢崎总业株式会社 | Welding structure |
| CN115213579A (en) * | 2022-06-22 | 2022-10-21 | 首钢集团有限公司 | Method and device for controlling salient points on surface of welding spots of coated steel plate |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121003 |