CN2865977Y - Electric resistance spot welding electrode capable of preventing fusing pit from splashing - Google Patents
Electric resistance spot welding electrode capable of preventing fusing pit from splashing Download PDFInfo
- Publication number
- CN2865977Y CN2865977Y CN 200520124094 CN200520124094U CN2865977Y CN 2865977 Y CN2865977 Y CN 2865977Y CN 200520124094 CN200520124094 CN 200520124094 CN 200520124094 U CN200520124094 U CN 200520124094U CN 2865977 Y CN2865977 Y CN 2865977Y
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- China
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- electrode
- nugget
- resistance spot
- welding
- spot welding
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Abstract
The utility model discloses a resistance spot-welding electrode against nugget spatter in the field of resistance spot-welding electrode technology. In detail, the electrode includes electrode body and electrode tip extended from one electrode end. It is characterized in that a tension spring joints with the electrode tip. Besides, top end of the tension spring connects with electrode body and changeover portion of electrode tip. And the bottom end is equipped with an insulated pressure ring matched for electrode tip actively. Therefore, the utility model features simple structure and easy production. The spot-welding electrode emits no nugget during wielding stainless steel and aluminum alloy sheet and guarantees welding quality of high-precision plate welding.
Description
Technical field
The utility model relates to a kind of lifetime of resistance spot welding electrode that prevents that nugget from splashing, and belongs to the lifetime of resistance spot welding electrode technology.
Background technology
The modern industry numerous areas relates to the resistance spot welding technology of sheet metal, auto industry particularly, at the technological competitiveness, the energy savings that strengthen enterprise and aspect such as cut down the consumption of energy, the quality detection technology that improves resistance spot welding is to realize one of approach that its purpose is main.Splashing between the sheet material workpiece is one of key factor that influences quality, because the sheet material spot welding time is short, the volume that the back nugget takes place that splashes is difficult to recover, and will cause the volume of nugget significantly to reduce, and impression is crossed dark and had a strong impact on internal flaws such as strength of joint, structure property and nugget form.
The processing now commonly used method of splashing is: 1, adjust welding parameter, reduce promptly that welding current is excessive, electrode pressure produces, reduce the inside generation of splashing; 2, cleaning surface of the work.Splashing in the pinpoint welding procedure mainly occurs in contact surface between workpiece, and relevant with the surface appearance of weldment, and handling as surface of the work badly can both increase the generation of splashing.
In a word, generally believe at present and should manage to avoid pinpoint welding procedure to splash as much as possible, splash, must in standard parameter, cleaning and operation, look for reason in case produce.
The electrode force butt welding point forms double action.It had both influenced the contact resistance of solder joint, promptly influenced the intensity and the distribution of thermal source; Influence the effect of electrode heat radiation and the compactness extent of weld zone plastic deformation and nugget inside again.Increase electrode force when other parameter constant, then contact resistance reduces, and heat radiation is strengthened, thereby the total amount of heat minimizing, and nugget size reduces, and special penetration rate reduces very fast, even does not have through welding; If electrode force is too small, though then between plate contact bad. its contact resistance is unstable greatly, even occurs splashing and defective such as burn.In the nugget forming process, the electrode pressure servo-actuated is good, can regulate, and present most of mash welder can only be the weighing apparatus potential source, has increased the nugget generation of splashing.
As everyone knows, nugget, plasticity ring and on every side the part of base metals constituted tack-weld.The plasticity ring is meant around the nugget to have certain thickness plastic metal district, and it helps the tack-weld bearing load.From welding effect, compress the plasticity ring, the generation of splashing in can effectively preventing.
During spot welding, surrounded by the high-temp plastic metal around the nugget, the metal of contact-making surface welds together under heat and electrode force effect, form the plastic metal ring (Fig. 1) of sealing nugget, it is in generation, expansion all the time, part is converted into this dynamic changing process of liquid nugget, promptly form and follow nugget to grow up together all the time prior to nugget, make the nugget metal can not be excessive, and it is isolated with gas phase, prevent the metal generation metallurgical reaction in the atmosphere and nugget in the air, to keep the nugget metal ingredient constant substantially.When the plasticity ring breakage, the deposite metal ejects, and promptly produces and splashes.
Owing to still there is not the lossless detection method that uses in resistance spot welding is produced, the internal soundness of solder joint (nugget size) is difficult to determine, therefore adopts to guarantee that moulding ring does not break, and has directly reduced the generation of splashing, and is an efficient ways.
Summary of the invention
The purpose of this utility model is to provide a kind of lifetime of resistance spot welding electrode that prevents that nugget from splashing, and this lifetime of resistance spot welding electrode has simple in structure, implements the good characteristics of point of resistance welding quality.
The utility model is realized by following technical proposals.The lifetime of resistance spot welding electrode that a kind of anti-nugget splashes, this electrode comprises that the electrode tip 3 that electrode body 1 and electrode body one end stretch out constitutes, it is characterized in that, tension spring 2 of suit outside electrode tip 3, the upper end of this spring and electrode body and electrode tip changeover portion tight fit, the lower end of tension spring connect one with electrode tip insulating pressure ring 4 movingly.
Above-mentioned electrode tip diameter is 1～10mm:
The internal diameter of above-mentioned dead ring is greater than electrode tip overall diameter 0.5～1.5mm, and the external diameter of dead ring and the difference of internal diameter are 6～18mm.
Advantage of the present utility model is simple in structure, easily manufactured, uses no matter this spot-wedling electrode is to stainless steel, when aluminium alloy sheet is implemented resistance spot welding, does not all produce splashing of nugget, particularly welds accurate sheet material, can guarantee welding quality.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 carries out the device schematic diagram of point of resistance welding for adopting the utility model.
Among the figure: 1-electrode body, 2-tension spring, 3-electrode tip, 4-dead ring, 5-lifetime of resistance spot welding electrode, 6-workpiece, 7-bottom electrode.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further specified: electrode body and electrode tip adopt chrome zirconium copper alloy material turning processing and manufacturing, electrode body diameter 9mm, height 20mm; Electrode tip diameter 4.5mm, long 6mm, suit tension spring outside electrode tip, its upper end is connected with the electrode tip changeover portion with electrode body, and the lower end is connected with dead ring, and this tension spring adopts carbon steel, steel wire diameter 1mm, spring diameter 6mm, the insulation pressure ring adopts ceramic material, internal diameter 5.5mm external diameter 12mm.Bottom electrode adopts tack end face chrome zirconium copper alloy, and diameter is 16mm.The spot welding workpiece material is uniform thickness corrosion resistant plate not, last stainless steel thickness of slab 0.2mm, and following stainless steel thickness of slab 0.8mm, material surface has electrodeposited coating.Adopt the electrode soldering stainless steel plate of said structure, process conditions are: electric current: 2000A pressure: 0.15MPa, time: 60ms.Every point of 50mm welding, pad is up-to-standard, does not splash.Under same process conditions, adopt conventional frustum shape spot-wedling electrode, all pads all have and splash.
Claims (3)
1. lifetime of resistance spot welding electrode that anti-nugget splashes, this electrode comprises that the electrode tip (3) that electrode body (1) and electrode body one end stretch out constitutes, it is characterized in that, a tension spring of suit (2) outside electrode tip (3), the upper end of this tension spring and electrode body and electrode tip changeover portion tight fit, the lower end of spring connect one with electrode tip insulating pressure ring (4) movingly.
2. the lifetime of resistance spot welding electrode that splashes by the described anti-nugget of claim 1 is characterized in that, the electrode tip diameter is 1～10mm.
3. the lifetime of resistance spot welding electrode that splashes by the described anti-nugget of claim 1 is characterized in that, the internal diameter of dead ring is greater than electrode tip overall diameter 0.5～1.5mm, and the external diameter of dead ring and the difference of internal diameter are 6～18mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520124094 CN2865977Y (en) | 2005-12-19 | 2005-12-19 | Electric resistance spot welding electrode capable of preventing fusing pit from splashing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520124094 CN2865977Y (en) | 2005-12-19 | 2005-12-19 | Electric resistance spot welding electrode capable of preventing fusing pit from splashing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2865977Y true CN2865977Y (en) | 2007-02-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520124094 Expired - Fee Related CN2865977Y (en) | 2005-12-19 | 2005-12-19 | Electric resistance spot welding electrode capable of preventing fusing pit from splashing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2865977Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104107993A (en) * | 2014-07-07 | 2014-10-22 | 力帆实业(集团)股份有限公司 | Point welding spattering-protection device and point welding machine |
| CN105014219A (en) * | 2015-07-15 | 2015-11-04 | 东风商用车有限公司 | Combined type floating electrode and use method thereof |
| CN105189013A (en) * | 2013-03-19 | 2015-12-23 | 株式会社神户制钢所 | Spot welded joint |
| CN106378525A (en) * | 2016-11-30 | 2017-02-08 | 佛山三友汽车部件制造有限公司 | Spot welding machine |
-
2005
- 2005-12-19 CN CN 200520124094 patent/CN2865977Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105189013A (en) * | 2013-03-19 | 2015-12-23 | 株式会社神户制钢所 | Spot welded joint |
| CN105189013B (en) * | 2013-03-19 | 2018-06-08 | 株式会社神户制钢所 | Tack-weld |
| CN104107993A (en) * | 2014-07-07 | 2014-10-22 | 力帆实业(集团)股份有限公司 | Point welding spattering-protection device and point welding machine |
| CN104107993B (en) * | 2014-07-07 | 2016-08-17 | 力帆实业(集团)股份有限公司 | A kind of spot welding splatter guard device and a kind of mash welder |
| CN105014219A (en) * | 2015-07-15 | 2015-11-04 | 东风商用车有限公司 | Combined type floating electrode and use method thereof |
| CN106378525A (en) * | 2016-11-30 | 2017-02-08 | 佛山三友汽车部件制造有限公司 | Spot welding machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |