CN109048019A - A kind of welding procedure for Copper-Aluminum compound row - Google Patents
A kind of welding procedure for Copper-Aluminum compound row Download PDFInfo
- Publication number
- CN109048019A CN109048019A CN201811067305.9A CN201811067305A CN109048019A CN 109048019 A CN109048019 A CN 109048019A CN 201811067305 A CN201811067305 A CN 201811067305A CN 109048019 A CN109048019 A CN 109048019A
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- CN
- China
- Prior art keywords
- welding
- copper
- aluminum compound
- compound row
- dedicated
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Classifications
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- 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
- B23K11/10—Spot welding; Stitch welding
- B23K11/11—Spot welding
- B23K11/115—Spot welding by means of two electrodes placed opposite one another on both sides of the welded parts
-
- 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
- B23K11/24—Electric supply or control circuits therefor
-
- 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
- B23K11/36—Auxiliary equipment
Abstract
The present invention provides a kind of welding procedures for Copper-Aluminum compound row, comprising the following steps: (1), overlapped Copper-Aluminum compound row's welding surface will be needed to smear dedicated scaling powder；(2), in two welding surfaces, one of part faying surface is selected, dedicated solder(ing) paste is smeared；(3) it after overlapping the faying surface of two pieces weldment, with resistance welder clamping cylinder, after being compressed by graphite electrode, is welded, is placed in cooling in water after the completion, dries welding can be completed later.The present invention solves the problems, such as the overlap joint welding of Copper-Aluminum compound row, had both remained the efficient easy to operate of resistance-welding process, and had in turn ensured that copper aluminum composite material was not destroyed in welding process, and welding surface shearing bond strength is greater than 15MPa；By this welding procedure, workpiece size variation easily can ensure welding quality by adjusting the parameters such as welding current size, weld interval, pulse number, can also change the shape of electrode to adapt to the welding of different shape product.
Description
Technical field
The invention belongs to welding technology fields, relate in particular to a kind of welding procedure for Copper-Aluminum compound row.
Background technique
As energy conservation and environmental protection is increasingly paid attention in the whole world, it is desirable that higher and higher, the application of Copper-Aluminum compound row is growing, very
More clients are energy-saving and emission-reduction cost declining, propose the requirement of overlap joint welding, i.e., the narrow row of overlap joint superposition part on main row, will be general
Logical rectangular section Copper-Aluminum compound row becomes local thickness increase abnormity row, with this come solve space limitation current-carrying not
Sufficient problem.The common resistance welding technology of Copper-Aluminum compound mining, certainly will will lead to welding and be difficult to realize, because resistance welding is sharp
It is cooled and solidified, the Jin Errong after super-high-current fever causes workpiece welding position instant melting of the contact resistance between conductor
Conjunction is welded together.Copper-Aluminum compound row is since there is the presence of aluminium in centre, and copper-copper contact surface (will guarantee conductive requirement, contact greatly
Face must be big), the electric property factor of material itself leads to contact resistance very little, this requires with resistance welding contact resistance big
Technology theory method just contradiction；If therefore copper energy fusion welding, the resistance of that aluminium is bigger, melts already under same electric current
Change, raw material property can be destroyed, so conventional, electric-resistance welding procedure cannot achieve requirement.
Summary of the invention
The present invention provides a kind of welding procedure for Copper-Aluminum compound row to solve the above-mentioned problems.
The technical scheme of the present invention is realized as follows: a kind of welding procedure for Copper-Aluminum compound row, including following step
It is rapid:
(1), overlapped Copper-Aluminum compound row's welding surface will be needed to smear dedicated scaling powder；
(2), in two welding surfaces, one of part faying surface is selected, dedicated solder(ing) paste, 1 ~ 1.5mg/mm are smeared2, welding temperature
320 DEG C of degree；
(3) it after overlapping the faying surface of two pieces weldment, with resistance welder clamping cylinder, after being compressed by graphite electrode, carries out
Welding, welding parameter are 30 ~ 100x100A of primary current, 100 ~ 500ms of time, 25 ~ 80x100A of secondary current, the time 100 ~
500ms, secondary current pulse number are 0 ~ 3, are placed in cooling in water after the completion, dry welding can be completed later；
Preferably, the dedicated scaling powder mainly at include concentration be 30 ~ 40% hydrochloric acid, the nitric acid and water that concentration is 60 ~ 70%,
Three's mixing quality ratio is 5:1:5, and mixing ratio error controls within 5%；
Preferably, the industrial alcohol that the dedicated solder(ing) paste includes silver-colored glass putty and concentration is 85 ~ 95%, the silver glass putty includes 3 ~
3.5% silver and 96.5 ~ 97% tin, silver-colored glass putty and industrial alcohol mixing quality ratio are 7:1, and mixing ratio error is no more than 10%.
The beneficial effects of the present invention are: the present invention solves the problems, such as the overlap joint welding of Copper-Aluminum compound row, resistance is both remained
Welding it is efficient easy to operate, in turn ensure that copper aluminum composite material is not destroyed in welding process, welding surface shearing bond strength
Greater than 15MPa；By this welding procedure, when workpiece size variation can easily pass through adjusting welding current size, welding
Between, the parameters such as pulse number ensure welding quality, the shape of electrode can also be changed to adapt to the welding of different shape product.
Since Copper-Aluminum compound arranges material property, it is difficult to surface resistance self-heating, which is overlapped, using material welds to complete fusion,
So this patent is that electrode is made to generate heat in moment by transient high-current, pass through even more subpulse current control temperature twice
The high heat that electrode generates is transmitted to faying surface, fusing solder(ing) paste realizes weldering using the high thermal conductivity of copper aluminium material material itself by degree
Connect purpose.
Detailed description of the invention
Fig. 1 is pad schematic diagram of the present invention；
Fig. 2 is Copper-Aluminum compound row schematic diagram used in inventive embodiments.
Part explanation: 1, graphite electrode, 2, Copper-Aluminum compound row.
Specific embodiment
For a better understanding and implementation, the invention will be further described below in conjunction with the accompanying drawings: (1) by needs, overlapped
Copper-Aluminum compound arranges welding surface and smears dedicated scaling powder with cotton balls, and dedicated scaling powder is mainly at the hydrochloric acid including concentration for 35%, concentration
For 68% nitric acid and water, three's mixing quality ratio is 5:1:5, it is therefore an objective to remove oxide layer on surface of material, increase solder(ing) paste stream
Dynamic property, smearing the scaling powder can effectively solve the scarce weldering phenomenon of welding surface；
(2) in two welding surfaces, one of part faying surface is selected, uniformly smears dedicated solder(ing) paste 1.5mg/mm2, dedicated weldering
The industrial alcohol that tin cream includes silver-colored glass putty and concentration is 95%, the silver glass putty include the 3% silver-colored tin with 97%, silver-colored glass putty and work
Industry alcohol mixing quality ratio be 7:1,320 DEG C of solder(ing) paste welding temperature；
(3) it after overlapping the faying surface of two pieces weldment, with resistance welder clamping cylinder, is compressed by 31 circular graphitic electrode of Φ
(see figure 1) afterwards is welded, since lengthwise dimension is more than electrode diameter, it is therefore desirable to weld twice, primary current
40x100A, time 200ms, secondary current 35x100A, time 200ms, secondary current pulse number 2, the center welded every time
Point row length 51.6(see Fig. 2) dimensional directions 1/3 at, primary current is rapidly heated, and secondary current is more slightly lower than primary current
5x100A, and the purpose that 2 subpulses are arranged is to continue short time heating 2 times, prevents from cooling down to workpiece held for some time, so as to
Temperature can complete the welding process of fusing soldering paste for delivery to weld seam, and the weld seam of welded workpiece can see that apparent scolding tin is equal
Even fusing is full of, and it is qualified for showing to weld, and is placed in cooling in water after the completion, is dried welding can be completed later.
Welding parameter should guarantee that Copper-Aluminum compound row's temperature will not melt aluminium layer, guarantee the fusing of seam crossing solder(ing) paste again
Temperature reaches 320 DEG C, and different size material welding qualities are mainly by scolding tin paste composition, welding current, current time, electric current
The cooling of the contact area, electrode welder of number, electrode material physical property, welding material physical property, materials to be welded and electrode
What the parameters such as rate were influenced, the variation of any one parameter all can welding quality bring certain influence, in application process
Influence factor is quantified, to ensure reliable welding quality.
Claims (3)
1. a kind of welding procedure for Copper-Aluminum compound row, it is characterised in that the following steps are included:
(1), overlapped Copper-Aluminum compound row's welding surface will be needed to smear dedicated scaling powder；
(2), in two welding surfaces, one of part faying surface is selected, dedicated solder(ing) paste, 1 ~ 1.5mg/mm are uniformly smeared2, weldering
320 DEG C of jointing temp；
(3), it after overlapping the faying surface of two pieces weldment, with resistance welder clamping cylinder, is compressed by graphite electrode (1) laggard
Row welding, welding parameter is 30 ~ 100x100A of primary current, 100 ~ 500ms of time, 25 ~ 80x100A of secondary current, time 100
~ 500ms, secondary current pulse number are 0 ~ 3, are placed in cooling in water after the completion, dry welding can be completed later.
2. a kind of welding procedure for Copper-Aluminum compound row as described in claim 1, it is characterised in that the dedicated scaling powder
Including concentration be 30 ~ 40% hydrochloric acid, the nitric acid and water that concentration is 60 ~ 70%, three's mixing quality ratio be 5:1:5, proportion miss
Difference control is within 5%.
3. a kind of welding procedure for Copper-Aluminum compound row as described in claim 1, it is characterised in that the dedicated solder(ing) paste
The industrial alcohol for being 85 ~ 95% including silver-colored glass putty and concentration, the silver glass putty include 3 ~ 3.5% silver and 96.5 ~ 97% tin, silver
Glass putty and industrial alcohol mixing quality ratio are 7:1, and mixing ratio error is no more than 10%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811067305.9A CN109048019B (en) | 2018-09-13 | 2018-09-13 | Welding process for copper-aluminum composite bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811067305.9A CN109048019B (en) | 2018-09-13 | 2018-09-13 | Welding process for copper-aluminum composite bar |
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| Publication Number | Publication Date |
|---|---|
| CN109048019A true CN109048019A (en) | 2018-12-21 |
| CN109048019B CN109048019B (en) | 2021-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811067305.9A Active CN109048019B (en) | 2018-09-13 | 2018-09-13 | Welding process for copper-aluminum composite bar |
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| CN (1) | CN109048019B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109664012A (en) * | 2019-02-01 | 2019-04-23 | 泰州天科电子科技有限公司 | The direct welding procedure of lithium battery copper aluminium electrode |
| CN110814495A (en) * | 2019-11-14 | 2020-02-21 | 高力 | Spot welding method for resistance element |
| CN110814494A (en) * | 2019-11-14 | 2020-02-21 | 高力 | Resistance electric welding machine |
| CN113414460A (en) * | 2021-07-09 | 2021-09-21 | 陕西斯瑞新材料股份有限公司 | Welding process of MW-level wind power copper bar |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109664012A (en) * | 2019-02-01 | 2019-04-23 | 泰州天科电子科技有限公司 | The direct welding procedure of lithium battery copper aluminium electrode |
| CN110814495A (en) * | 2019-11-14 | 2020-02-21 | 高力 | Spot welding method for resistance element |
| CN110814494A (en) * | 2019-11-14 | 2020-02-21 | 高力 | Resistance electric welding machine |
| CN110814495B (en) * | 2019-11-14 | 2021-12-07 | 中科同帜半导体(江苏)有限公司 | Spot welding method for resistance element |
| CN110814494B (en) * | 2019-11-14 | 2021-12-21 | 浙江腾洋电器有限公司 | Resistance electric welding machine |
| CN113414460A (en) * | 2021-07-09 | 2021-09-21 | 陕西斯瑞新材料股份有限公司 | Welding process of MW-level wind power copper bar |
| CN113414460B (en) * | 2021-07-09 | 2022-10-25 | 陕西斯瑞新材料股份有限公司 | Welding process of MW-level wind power copper bar |
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| Publication number | Publication date |
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| CN109048019B (en) | 2021-01-26 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A welding process for copper aluminum composite row Effective date of registration: 20211210 Granted publication date: 20210126 Pledgee: Yantai Zhonglian Industry Co.,Ltd. Pledgor: YANTAI FISEND BIMETAL Co.,Ltd. Registration number: Y2021980014584 |
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Date of cancellation: 20220725 Granted publication date: 20210126 Pledgee: Yantai Zhonglian Industry Co.,Ltd. Pledgor: YANTAI FISEND BIMETAL Co.,Ltd. Registration number: Y2021980014584 |
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