CN101961814A - Method for performing spot welding on Al-Zn hot-coated steel plate - Google Patents
Method for performing spot welding on Al-Zn hot-coated steel plate Download PDFInfo
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- CN101961814A CN101961814A CN2009100552932A CN200910055293A CN101961814A CN 101961814 A CN101961814 A CN 101961814A CN 2009100552932 A CN2009100552932 A CN 2009100552932A CN 200910055293 A CN200910055293 A CN 200910055293A CN 101961814 A CN101961814 A CN 101961814A
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Abstract
The invention provides a method for performing spot welding on an Al-Zn hot-coated steel plate. In the method, a foil belt is arranged between a copper electrode and an Al-Zn hot-coated steel plate workpiece; a step type large-contact planar electrode is adopted, a two-section welding current mode is adopted; and the two-section welding current adopts a constant current control mode, so that the foil belt is not adhered to the workpiece and the electrode and each welding spot has fine appearance and stable quality. The copper electrode is only contacted with a non-tinplated surface of the foil plate, so the method solves the problem that the electrode is alloyed by a zinc aluminium coating fundamentally, prolongs the service life and improves the welding spot quality of a spot-welding electrode of the zinc aluminium plated steel plate, prolongs the service life of the electrode and has favorable popularization and application prospects.
Description
Technical field
The invention belongs to the materials processing technology field, the resistance spot welding that applies to hot-dip aluminizing zincium steel plate connects, and relates in particular to a kind of spot welding method of hot-dip aluminizing zincium steel plate.
Background technology
Spot welding method extensively applies to various panel beatings field, comprises numerous industries such as household electrical appliances, auto parts and components and five metals.As one of metallic sheet stock interconnection technique of main flow, spot welding has high efficiency, low production cost, process and is easy to advantages such as automation.
The hot-dip aluminizing zincium steel plate coating structure is the fine and close quaternary crystalline solid that is formed by aluminium-iron-silicon-zinc, and this coating combines the high corrosion resistance of aluminium and zinc has the advantage of protective effect to side cut, has characteristics such as good corrosion resistance, high heat resistance.Compare with traditional galvanized steel plain sheet, the antiseptic power of hot-dip aluminizing zincium steel plate be equal conditions galvanized steel plain sheet 4--6 doubly, under the weight condition identical with thickness of coating, the aluminum-zinc alloy layer is bigger more than 30% than the area of zinc coat, can significantly save and produce and use cost.
Hot-dip aluminizing zincium steel plate is in resistance spot welding process, the adhesion of coating and copper electrode is very serious, except influencing the stability of solder joint appearance and Joint Strength, the problem of most critical is significantly to have reduced the copper electrode life-span, cause production efficiency low, consumption of electrode is big, have a strong impact on the streamline production operation beat, become production bottleneck, welding engineering technical staff thinks always that for a long time hot-dip aluminizing zincium steel plate spot welding is not suitable for applying to large-scale production, still mainly use in the occasion that relies on mechanical connection such as riveted joint method up to present hot-dip aluminizing zincium steel plate, open source literature and data are almost without any the report about hot dip aluminum zinc plate resistance spot welding technical elements both at home and abroad.
The patent aspect, the Chinese application publication number of Fu Luoniusi house journal " method for resistance welding " is the patent of CN1665636A, patent name is " electrode protecting device, spot-welding tool and an electric resistance welding method ", relate to coated plate reference point soldering method, its metal tape of selecting for use is that two-layer and above different material is formed, and cooperates the electrode special pincers could realize correlation function, the equipment complexity, the use cost height is suitable for the spot welding of aluminium sheet;
United States Patent (USP); patent No. US5552573A; patent name " Resistance Welding Processfor Aluminum and Aluminum Alloy Materials " i.e. " aluminium alloy pinpoint welding method " also relates to the paper tinsel band of guard electrode; adopt coated on both sides; coating material is made up of precious metals such as nickel, titanium, niobium, molybdenum, chromium, cobalts, and production cost is high.
In general, there is following defective respectively in said method: sticking utmost point phenomenon is serious, and electrode life is low; Paper tinsel band production consuming cost height; The equipment complexity is difficult on the existing device and cooperates simple frock can realize reliable utilization.
Summary of the invention
The spot welding method that the purpose of this invention is to provide a kind of hot-dip aluminizing zincium steel plate, based on the practice condition, between electrode and coating workpiece, be encased inside assistant metal paper tinsel band, avoid electrode directly to be subjected to the scheme that coating adheres to, because be added in electrode and the workpiece contact position of paper tinsel band form inferior high-temperature region, the joint area temperature field is tending towards evenly, thereby is beneficial to the formation of nugget between workpiece.Solve hot-dip aluminizing zincium steel plate conventional, electric-resistance spot welding method extremely short deadly defect electrode life.
Technical scheme of the present invention is as follows: the present invention proposes spot welding method, has fundamentally improved the service life and the quality of welding spot of zinc-plated aluminum steel plate spot-wedling electrode.The combination of paper tinsel band and original electrode also can be regarded a kind of combination electrode as in fact, but distinguishes to some extent with the combination electrode of routine, and conventional combination electrode is meant on copper or copper alloy electrode matrix inlays a kind of electrode that heat proof materials such as W or Mo obtain.Combination electrode of the present invention is: increase one deck paper tinsel carrying material between workpiece and copper electrode, this paper tinsel carrying material plays the effect of isolated electrode and workpiece as consumptive material, position of a solder joint paper tinsel of every weldering Tape movement, guarantee preceding electrode of each solder joint welding and paper tinsel band, the contact surface of paper tinsel band and workpiece all is fresh.The uneven coating that workpiece and paper tinsel band form in welding process is spared or other a small amount of alloying substances is pulled away along with moving of paper tinsel band, is equivalent to solder joint electrode dressing of every weldering once.Because copper electrode only contacts with not zinc-plated of paper tinsel band, has fundamentally eliminated electrode by the problem of the laminated aurification of zinc, has improved electrode life.
The object of the present invention is achieved like this: increase the paper tinsel band between electrode and hot-dip aluminizing zincium steel plate workpiece; It is the step plane electrode that electrode adopts the end; Adopt two-part welding current pattern, first section electric current fusing tin coating make its fully fill contact between paper tinsel band and workpiece regional, second section electric current is used to form nugget between workpiece (nugget nugget is meant that the metal core that the back forms is solidified in the deposite metal on the weldment binding face when carrying out resistance spot welding, projection welding and seam weldering).
Preferably, described paper tinsel band is chosen the single face ferrostan, and zinc-plated contacts with workpiece, and not zinc-plated contacts with electrode.Problems such as effective like this direct sticking utmost point that contacts and bring thus of having avoided workpiece coating and copper electrode, alloying, fixed intervals of paper tinsel Tape movement after finishing a welding interval, this just rebulids and previous welding interval of on all four technical conditions, has guaranteed the relative stability of all pinpoint welding procedures.
Preferably, described paper tinsel band and electrode contact surface are cold rolling attitude, and thickness range is 0.05-0.35mm, and material is the mild steel of low-cost high conduction performance.
Preferably, described zinc-plated zinc-plated amount is 1-10g/m
2
Preferably, the 2-3 that described step plane electrode contact-making surface diameter is required nugget size doubly guarantees to obtain excellent contact and cooling condition.
Big plane contacts with workpiece and can increase contact area and create better electrode cooling condition, unique step electrode helps nugget forms except producing additional moment by the circumferential center of circle at contact-making surface, the inboard face of cylinder also can be used as the datum level of electrode dressing, simple and convenient and the dimensional accuracy of reconditioning work also can well be guaranteed, and actual operation is good.
In welding process, first section electric current fusing tin coating is fully filled between paper tinsel band and workpiece it and contact the zone, changes solidus, the wire contact is liquid planar contact, effectively reduces contact resistance, increase electric current by area and heat conduction path, reduce the generation of this place's heat; Can reduce the contact area temperature middle cool time rapidly, effectively reduces the probability of happening that splashes, thereby guarantee follow-up welding process stability; Second section electric current is used to form nugget between workpiece, early stage the paper tinsel band contact on the good basis with workpiece, the second end electric current is bigger than first section electric current, produce big heat by big electric current and concentrate between workpiece, thereby nugget between the workpiece that needing to obtain.
Preferably, described two-part welding current all adopts the constant current control model.
After welding was finished, because the tin fusing point is far below the aluminium-zinc coating fusing point, when low, strip and workpiece, copper electrode all can not adhere to the paper tinsel band, paper tinsel band and workpiece, copper electrode meeting natural separation after the tin coating cooled and solidified with the control of workpiece contact position temperature when welding.Certainly pinpoint welding procedure is had relatively high expectations to the control accuracy of the source of welding current on the whole, and welding equipment can adopt the constant current control model usually, and the two-part electric current also all adopts the constant current control model.
The present invention makes it compared with prior art owing to adopted above technical scheme, has the following advantages and good effect:
1) utilize spot welding method of the present invention, paper tinsel band and workpiece and electrode all do not adhere to, and the solder joint outward appearance is good, steady quality.
2) utilize spot welding method of the present invention, can significantly improve electrode life during the hot-dip aluminizing zincium steel plate resistance spot welding, stablize the nugget quality when enhancing productivity, reduce production costs.
Description of drawings
The invention will be further described below in conjunction with the drawings and specific embodiments.
Fig. 1 is (a before the spot welding method precompressed of the present invention
1), (b) stage schematic diagram after the precompressed;
Fig. 2 is spot welding method preheating of the present invention (c), welding (e) stage schematic diagram;
Fig. 3 is the step copper electrode;
Fig. 4 is the single face tin plate;
Fig. 5 is spot welding method electric current of the present invention, pressure sequential chart;
Fig. 6 is conventional spot welding method hot dip aluminum zinc plate test curve electrode life;
Fig. 7 is for adopting the hot-dip aluminizing zinc spot-wedling electrode life test curve of this spot welding method;
Fig. 8 is spot welding method A of the present invention and general point soldering method B difference schematic diagram.
Among the figure: paper tinsel band, 7-bottom electrode, 8-nugget, 9-cold-rolled substrate, 10-contact-making surface, 11-step, 12-water cooling passageway, a under workpiece, the 6-under 1-top electrode, the last paper tinsel band of 2-, 3-tin coating, the last workpiece of 4-, the 5-
1Before-the precompressed, b-precompressed, c-preheating, d-at interval, e-welding, f-protect carry, a
2-unloading.
The specific embodiment
Be illustrated in figure 8 as spot welding method A of the present invention and general point soldering method B difference schematic diagram, between upper and lower electrode and upper and lower workpiece, insert upper and lower paper tinsel band, what be worth particularly pointing out is, the paper tinsel band is that single face taggers tin (as shown in Figure 4) and zinc-plated all contact with workpiece among the present invention, not zinc-plated then contacts with copper electrode, separate copper electrode and contact, avoided the prerequisite of aluminium, zinc element and copper generation alloying with the direct of workpiece aluminium-zinc coating.As shown in Figure 1 and Figure 2.
In addition, in order to realize that follow-up welding process is stable and practical operation is easy, this method adopts the step spot-wedling electrode as shown in Figure 3, and cooperates two-part welding current pattern as shown in Figure 5.Be specially: a before the precompressed
1, inserting paper tinsel band 2,6 respectively between ready spot welding top electrode 1 and the last workpiece 4 and between bottom electrode 7 and the following workpiece 5, wherein zinc-plated 3 on paper tinsel band is towards workpiece, and not zinc-plated then towards upper and lower copper electrode; Precompressed b applies electrode pressure to upper and lower electrode after fixing relative position, makes upper and lower electrode compress paper tinsel band and workpiece at place to be welded; Subsequently the preheating c stage by first section little electric current of electrode conduction, improve and stablize each contact-making surface and particularly contact situation between paper tinsel band and workpiece, reduce the resistance of getting an electric shock indirectly of paper tinsel band and workpiece really; Through a bit of interval d cooling, the conducting second means of spot welds electric current when welding e forms nugget 8 between required workpiece: protect and carry f, keep electrode pressure a period of time: unloading a
2, unloading pressure, upper and lower electrode is opened, and the paper tinsel band separates automatically with copper electrode, workpiece after the tin coating cooled and solidified; Upper and lower electrode moves to next position to be welded subsequently and carries out next one welding interval.
It is the auxiliary paper tinsel band of mild steel single face plating tinfoil paper band (zinc-plated amount 5.6g/m2) conduct of 0.18mm that utilization the inventive method is selected thickness for use, hot-dip aluminizing zincium steel plate DC52D+AZ (coating weight 45/45g to Baosteel 0.8mm thickness specification, environmental protection passivation post processing) carries out spot-welding test, to contrast its electrode life result respectively as follows with the general point soldering method, chromium-copper is about 150 points electrode life under the general point soldering method situation as seen from Figure 6, and dispersion-strengthened Cu is about 300 points electrode life; Adopt spot welding method of the present invention, can reach electrode life about 1100 as shown in Figure 7, it is on the low side to solve the hot dip aluminum zinc plate spot-wedling electrode life-span substantially, cause having a strong impact on production efficiency and quality of welding spot stability problem, but scale applies to actual production.
In sum, utilization is based on spot welding method of the present invention, can significantly improve electrode life during the hot-dip aluminizing zincium steel plate resistance spot welding, promptly increase electrode and change (reconditioning) time interval, stablize the nugget quality when enhancing productivity, reduce production costs, workpiece to adopting hot-dip aluminizing zincium steel plate to process especially as raw material, its streamline large-scale production is consistent with other thickness coating such as grade commonly used such as pure zinc coating material substantially, give full play to its high corrosion-resistant for the hot-dip aluminizing zincium steel plate material, low-cost advantage has good value thereby further promote the use.
Be noted that above enumerate only for a specific embodiment of the present invention, obviously the invention is not restricted to above embodiment, many similar variations are arranged thereupon.If those skilled in the art all should belong to protection scope of the present invention from all distortion that content disclosed by the invention directly derives or associates.
Claims (6)
1. the spot welding method of a hot-dip aluminizing zincium steel plate is characterized in that: increase the paper tinsel band between electrode and hot-dip aluminizing zincium steel plate workpiece; It is the step plane electrode that electrode adopts the end; Adopt two-part welding current pattern, first section electric current fusing tin coating fully fills it contact regionally between paper tinsel band and workpiece, and second section electric current is used to form nugget between workpiece.
2. the spot welding method of hot-dip aluminizing zincium steel plate as claimed in claim 1, it is characterized in that: described paper tinsel band is chosen the single face ferrostan, and zinc-plated contacts with workpiece, and not zinc-plated contacts with electrode.
3. the spot welding method of hot-dip aluminizing zincium steel plate as claimed in claim 2, it is characterized in that: described paper tinsel band and electrode contact surface are cold rolling attitude, and thickness range is 0.05-0.35mm, and material is the mild steel of low-cost high conduction performance.
4. the spot welding method of hot-dip aluminizing zincium steel plate as claimed in claim 2, it is characterized in that: described zinc-plated zinc-plated amount is 1-10g/m
2
5. as the spot welding method of any described hot-dip aluminizing zincium steel plate of claim 1-4, it is characterized in that: the 2-3 that described step plane electrode contact-making surface diameter is required nugget size doubly guarantees to obtain excellent contact and cooling condition.
6. the spot welding method of hot-dip aluminizing zincium steel plate as claimed in claim 5, it is characterized in that: described two-part welding current all adopts the constant current control model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100552932A CN101961814A (en) | 2009-07-24 | 2009-07-24 | Method for performing spot welding on Al-Zn hot-coated steel plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100552932A CN101961814A (en) | 2009-07-24 | 2009-07-24 | Method for performing spot welding on Al-Zn hot-coated steel plate |
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| CN101961814A true CN101961814A (en) | 2011-02-02 |
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| CN2009100552932A Pending CN101961814A (en) | 2009-07-24 | 2009-07-24 | Method for performing spot welding on Al-Zn hot-coated steel plate |
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Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102133682A (en) * | 2011-03-18 | 2011-07-27 | 华霆（合肥）动力技术有限公司 | Resistance welding method |
| CN102672332A (en) * | 2012-05-15 | 2012-09-19 | 上海交通大学 | Method for prolonging service life of resistance spot welding electrode of galvanized thin steel plate |
| CN102950373A (en) * | 2011-08-25 | 2013-03-06 | 通用汽车环球科技运作有限责任公司 | Weld schedule for resistance spot welding of alouminum alloy workpieces |
| JP2013103273A (en) * | 2011-11-17 | 2013-05-30 | Jfe Steel Corp | Resistance spot welding method for high-tensile steel sheet |
| CN104511687A (en) * | 2013-09-20 | 2015-04-15 | 通用汽车环球科技运作有限责任公司 | Resistance spot welding steel and aluminum workpiece with hot welding electrode at aluminum workpiece |
| CN104661784A (en) * | 2012-09-24 | 2015-05-27 | 新日铁住金株式会社 | Spot welding method for high-strength steel sheet excellent in joint strength |
| CN105142847A (en) * | 2013-04-17 | 2015-12-09 | 新日铁住金株式会社 | Spot welding method |
| CN105252130A (en) * | 2015-11-11 | 2016-01-20 | 攀钢集团攀枝花钢铁研究院有限公司 | Spot welding method of galvanized steel sheets |
| CN102950373B (en) * | 2011-08-25 | 2016-11-30 | 通用汽车环球科技运作有限责任公司 | Welding method for the resistance spot welding of Al alloy parts |
| CN106425070A (en) * | 2016-12-07 | 2017-02-22 | 上汽大众汽车有限公司 | Welding method of galvanized steel plate |
| CN106735806A (en) * | 2016-12-22 | 2017-05-31 | 惠州市毅隆机电设备有限公司 | A kind of welding equipment for laminated aluminium foil resistance welding |
| CN107350613A (en) * | 2017-08-03 | 2017-11-17 | 东北大学 | The resistor spot welding process method of steel workpiece with coated layer |
| CN107530820A (en) * | 2015-03-30 | 2018-01-02 | 新日铁住金株式会社 | The spot welding method of clad steel sheet |
| CN107999947A (en) * | 2017-12-06 | 2018-05-08 | 吉林大学 | A kind of steel-Al dissimilar materials process bands auxiliary resistance spot-welding technology |
| CN108098125A (en) * | 2017-12-27 | 2018-06-01 | 北京北冶功能材料有限公司 | A kind of foil material welding method |
| CN109014535A (en) * | 2018-10-10 | 2018-12-18 | 安徽巨自动化装备有限公司 | A kind of spot welding method for not uniform thickness aluminium sheet |
| CN109048020A (en) * | 2018-09-14 | 2018-12-21 | 上海工程技术大学 | A kind of band pole weldering welding procedure suitable for aluminum steel dissimilar metal |
| CN110461527A (en) * | 2017-03-30 | 2019-11-15 | 日本制铁株式会社 | The manufacturing method and welding point of welding point |
| CN110814496A (en) * | 2019-11-18 | 2020-02-21 | 中国航发贵州黎阳航空动力有限公司 | Method and structure for welding bush on flat pipe |
| CN111822841A (en) * | 2019-04-22 | 2020-10-27 | 矢崎总业株式会社 | Ultrasonic joining method |
| CN113751848A (en) * | 2021-09-08 | 2021-12-07 | 福建南平南孚电池有限公司 | Battery collector electron resistance welding process |
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| CN102133682A (en) * | 2011-03-18 | 2011-07-27 | 华霆（合肥）动力技术有限公司 | Resistance welding method |
| CN102950373A (en) * | 2011-08-25 | 2013-03-06 | 通用汽车环球科技运作有限责任公司 | Weld schedule for resistance spot welding of alouminum alloy workpieces |
| CN102950373B (en) * | 2011-08-25 | 2016-11-30 | 通用汽车环球科技运作有限责任公司 | Welding method for the resistance spot welding of Al alloy parts |
| JP2013103273A (en) * | 2011-11-17 | 2013-05-30 | Jfe Steel Corp | Resistance spot welding method for high-tensile steel sheet |
| CN102672332A (en) * | 2012-05-15 | 2012-09-19 | 上海交通大学 | Method for prolonging service life of resistance spot welding electrode of galvanized thin steel plate |
| CN104661784A (en) * | 2012-09-24 | 2015-05-27 | 新日铁住金株式会社 | Spot welding method for high-strength steel sheet excellent in joint strength |
| CN104661784B (en) * | 2012-09-24 | 2017-11-07 | 新日铁住金株式会社 | The spot welding method of the excellent high-strength steel sheet of strength of joint |
| CN105142847A (en) * | 2013-04-17 | 2015-12-09 | 新日铁住金株式会社 | Spot welding method |
| CN105142847B (en) * | 2013-04-17 | 2018-03-30 | 新日铁住金株式会社 | Spot welding method |
| CN104511687B (en) * | 2013-09-20 | 2017-07-18 | 通用汽车环球科技运作有限责任公司 | Utilize the thermal weld electrode resistance point welding steel and aluminium workpiece at aluminium workpiece |
| CN104511687A (en) * | 2013-09-20 | 2015-04-15 | 通用汽车环球科技运作有限责任公司 | Resistance spot welding steel and aluminum workpiece with hot welding electrode at aluminum workpiece |
| CN107530820B (en) * | 2015-03-30 | 2019-04-19 | 新日铁住金株式会社 | The spot welding method of clad steel sheet |
| CN107530820A (en) * | 2015-03-30 | 2018-01-02 | 新日铁住金株式会社 | The spot welding method of clad steel sheet |
| CN105252130A (en) * | 2015-11-11 | 2016-01-20 | 攀钢集团攀枝花钢铁研究院有限公司 | Spot welding method of galvanized steel sheets |
| CN106425070A (en) * | 2016-12-07 | 2017-02-22 | 上汽大众汽车有限公司 | Welding method of galvanized steel plate |
| CN106425070B (en) * | 2016-12-07 | 2018-10-19 | 上汽大众汽车有限公司 | The welding method of galvanized steel plain sheet |
| CN106735806A (en) * | 2016-12-22 | 2017-05-31 | 惠州市毅隆机电设备有限公司 | A kind of welding equipment for laminated aluminium foil resistance welding |
| CN110461527A (en) * | 2017-03-30 | 2019-11-15 | 日本制铁株式会社 | The manufacturing method and welding point of welding point |
| CN107350613B (en) * | 2017-08-03 | 2020-02-14 | 东北大学 | Resistance spot welding process for steel workpiece with coating layer |
| CN107350613A (en) * | 2017-08-03 | 2017-11-17 | 东北大学 | The resistor spot welding process method of steel workpiece with coated layer |
| CN107999947A (en) * | 2017-12-06 | 2018-05-08 | 吉林大学 | A kind of steel-Al dissimilar materials process bands auxiliary resistance spot-welding technology |
| CN108098125A (en) * | 2017-12-27 | 2018-06-01 | 北京北冶功能材料有限公司 | A kind of foil material welding method |
| CN108098125B (en) * | 2017-12-27 | 2020-07-03 | 北京北冶功能材料有限公司 | Foil strip welding method |
| CN109048020A (en) * | 2018-09-14 | 2018-12-21 | 上海工程技术大学 | A kind of band pole weldering welding procedure suitable for aluminum steel dissimilar metal |
| CN109014535A (en) * | 2018-10-10 | 2018-12-18 | 安徽巨自动化装备有限公司 | A kind of spot welding method for not uniform thickness aluminium sheet |
| CN111822841A (en) * | 2019-04-22 | 2020-10-27 | 矢崎总业株式会社 | Ultrasonic joining method |
| CN110814496A (en) * | 2019-11-18 | 2020-02-21 | 中国航发贵州黎阳航空动力有限公司 | Method and structure for welding bush on flat pipe |
| CN113751848A (en) * | 2021-09-08 | 2021-12-07 | 福建南平南孚电池有限公司 | Battery collector electron resistance welding process |
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Application publication date: 20110202 |