CN1080226A - Copper and low-carbon steel resistance diffusion welding process - Google Patents
Copper and low-carbon steel resistance diffusion welding process Download PDFInfo
- Publication number
- CN1080226A CN1080226A CN 93102201 CN93102201A CN1080226A CN 1080226 A CN1080226 A CN 1080226A CN 93102201 CN93102201 CN 93102201 CN 93102201 A CN93102201 A CN 93102201A CN 1080226 A CN1080226 A CN 1080226A
- Authority
- CN
- China
- Prior art keywords
- welding
- copper
- carbon steel
- auxiliary electrode
- resistance diffusion
- 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 36
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 22
- 239000010949 copper Substances 0.000 title claims abstract description 22
- 229910001209 Low-carbon steel Inorganic materials 0.000 title claims abstract description 14
- 238000009792 diffusion process Methods 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 11
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 4
- 239000010937 tungsten Substances 0.000 claims abstract description 4
- 239000011248 coating agent Substances 0.000 claims description 11
- 238000000576 coating method Methods 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 7
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 abstract description 4
- 239000003973 paint Substances 0.000 abstract 2
- 230000007547 defect Effects 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 239000002994 raw material Substances 0.000 abstract 1
- 229910000679 solder Inorganic materials 0.000 description 6
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910000604 Ferrochrome Inorganic materials 0.000 description 1
- 206010053615 Thermal burn Diseases 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- LQBJWKCYZGMFEV-UHFFFAOYSA-N lead tin Chemical compound [Sn].[Pb] LQBJWKCYZGMFEV-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052752 metalloid Inorganic materials 0.000 description 1
- 150000002738 metalloids Chemical class 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Landscapes
- Manufacture Of Motors, Generators (AREA)
Abstract
A resistance diffusion welding process method for copper and low-carbon steel solves the defects of poor quality caused by firstly removing a paint layer, preheating and throwing tin after welding in the prior art. The welding device is characterized in that the main electrode is made of copper-based materials, the auxiliary electrode is made of tungsten-based materials, no obvious welding spot exists after welding, the appearance is attractive, the operation is simple, the period is short, the work efficiency is improved, a large number of raw materials and equipment are saved, and the cost is reduced. And a third metal does not exist on the welding surface, so that the internal resistance and useless power consumption of the motor are reduced. The method can be used for resistance diffusion welding between the motor stator shell made of low-carbon steel and the copper outgoing line of the pole coil with the high-strength paint layer.
Description
The present invention relates to a kind of welding technique, carry out the copper and the low-carbon steel resistance diffusion welding process of resistance Diffusion Welding between the copper lead wire of the motor stator casing that particularly a kind of material is a mild steel and the band high strength enamelled coating of pole coil or enamelled coating.
When welding between the pole coil copper lead wire of motor stator casing and band high strength enamelled coating, exist certain particularity.After domestic and international known welding method is the high strength enamelled coating of removing earlier on the pole coil lead at present, scalds soldering with 500 watts ferrochrome, even want just can weld after the motor stator casing preheating earlier.Need the weld interval of usefulness long, operating personnel's work under bad environment.Because the fusing point of tin-lead solder has only 180 ℃, and the solder joint place needs the electric current by 600-1100A, tin very easily to melt and produce and get rid of the tin phenomenon.Particularly when carrying out platform experiment, this kind phenomenon is more obvious, thereby seriously influences welding quality.
The objective of the invention is to overcome above-mentioned weak point of the prior art, and provide a kind of simple to operate, with low cost, the efficient height, with short production cycle, all can normal starting and operation in the environment temperature of motor between subzero 25 ℃ and 180 ℃, guarantee the copper and the low-carbon steel resistance diffusion welding process of welding quality.
Purpose of the present invention can reach by following measure: according to the size of the volume of weld needs heating, determine the size of the work area of main electrode, for make welding current can be rapidly by solder side and make outward appearance injury-free, the working face of auxiliary electrode must be greater than the working face of main electrode.Determine to buckle the thickness of circle according to the maximum heat of lead thickness and weld heating needs.Motor stator casing when welding, will be with the enamelled coating lead to buckle circle and fasten and be placed on the welding position with copper.Welding machine is selected the source of welding current of doing more than the 25KVA for use, electric current is selected for use more than the 8000A, the air pressure of pressure at right angle is selected for use more than the 0.25MPa, and it is the material as electrode of base that main electrode adopts with copper, and it is the material as electrode of base that auxiliary electrode adopts with tungsten, after the energising heating, weld zone heat high concentration, copper and mild steel produce plastic deformation simultaneously, spread then, after second, make it integrally welded through 0.5-1.
The present invention has following advantage compared to existing technology:
1, solder side is that copper directly combines with mild steel, does not have the 3rd metalloid, thereby has reduced the resistance in the motor, has reduced useless power consumption.When the big electric current of 600-1100A by the time, can overcome exist in the weld prior art get rid of the tin phenomenon.This has just improved the power output of motor widely, reduced temperature rise, ensured the reliability of the stable and motor of welding quality, made in the environment temperature of motor between subzero 25 ℃ and 180 ℃, all energy normal starting and operations, and can be smoothly by bench test.
2, process operations is simple, can shorten the production cycle, improves work efficiency, saves materiel and equipments such as a large amount of man-hours, scolder, cleaning agent, reduces cost.
3, the postwelding motor stator casing does not have tangible solder joint, good looking appearance.
But 4 welding lead maximum secting areas are about 20 square millimeters.
The present invention is described in further detail below in conjunction with embodiment: the size of determining the main electrode work area according to the size of the volume of weld needs heating.For make welding current can be rapidly by solder side and make outward appearance injury-free, the working face of auxiliary electrode must be greater than the working face of main electrode.Motor stator casing when welding, will be with the enamelled coating lead to buckle circle and fasten with copper after, place the welding position.Mash welder can be selected the source of welding current of doing more than the 25KVA for use, and electric current is selected for use more than the 8000A, more than the vertical moulding pressure 0.25MPa, weld is directly contacted.It is the material of base that main electrode adopts with copper, it is the material of base that auxiliary electrode adopts with tungsten, the working face of major and minor electrode makes the cambered surface identical with welded piece or the required cambered surface energising of moulding adds the thermosetting potential difference, weld zone heat high concentration, and copper and mild steel produce plastic deformation simultaneously, make enamelled coating depolymerization liquefaction, under the effect of pressure, liquid lacquer is extruded the weld zone, spreads then then, after second, make it integrally welded through 0.5-1.Can be used for carrying out the resistance Diffusion Welding between the copper lead wire of pole coil of motor stator casing that material is a mild steel and one or more band high strength enamelled coating, also can be used for the direct Diffusion Welding of copper and mild steel.
Claims (1)
1, a kind of welding technique, carry out the copper and the low-carbon steel resistance diffusion welding process of resistance Diffusion Welding between the copper lead wire of the pole coil of the motor stator casing that particularly a kind of material is a mild steel and band high strength enamelled coating or enamelled coating, use mash welder, have main electrode and auxiliary electrode, take vertical pressurization, it is characterized in that, determine the size of main electrode work area according to the size of the volume of weld needs heating, the working face of auxiliary electrode must be greater than the working face of main electrode, during welding, after will being with the enamelled coating lead to buckle circle and fasten with copper, place the welding position, the thickness of button circle is determined by the thickness of lead and the maximum heat of weld heating needs, mash welder can be selected the source of welding current of doing more than the 25KVA for use, electric current is selected for use more than the 8000A, vertical moulding pressure is more than the 0.25MPa, weld is directly contacted, it is the material of base that main electrode adopts with copper, it is the material of base that auxiliary electrode adopts with tungsten, main, the working face of auxiliary electrode is made cambered surface identical with welded piece or that moulding is required, the energising heating, form potential difference, spread then, after second, make it integrally welded through 0.5-1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93102201 CN1080226A (en) | 1993-02-25 | 1993-02-25 | Copper and low-carbon steel resistance diffusion welding process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93102201 CN1080226A (en) | 1993-02-25 | 1993-02-25 | Copper and low-carbon steel resistance diffusion welding process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1080226A true CN1080226A (en) | 1994-01-05 |
Family
ID=4983995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93102201 Pending CN1080226A (en) | 1993-02-25 | 1993-02-25 | Copper and low-carbon steel resistance diffusion welding process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1080226A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100382923C (en) * | 2004-04-02 | 2008-04-23 | 本田技研工业株式会社 | Resistance welding method of different kinds of materials, and resistance welding member of aluminum alloy material and different kind of material |
| CN100448588C (en) * | 2006-11-06 | 2009-01-07 | 鹏煜威科技(深圳)有限公司 | Resistance welding method for copper and iron |
| CN100562396C (en) * | 2008-07-11 | 2009-11-25 | 广州（从化）亨龙机电制造实业有限公司 | A kind of electric resistance welding method |
| CN101452762B (en) * | 2008-09-18 | 2010-12-15 | 天津市天发重型水电设备制造有限公司 | Pole winding winding and molding method |
-
1993
- 1993-02-25 CN CN 93102201 patent/CN1080226A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100382923C (en) * | 2004-04-02 | 2008-04-23 | 本田技研工业株式会社 | Resistance welding method of different kinds of materials, and resistance welding member of aluminum alloy material and different kind of material |
| CN100448588C (en) * | 2006-11-06 | 2009-01-07 | 鹏煜威科技(深圳)有限公司 | Resistance welding method for copper and iron |
| CN100562396C (en) * | 2008-07-11 | 2009-11-25 | 广州（从化）亨龙机电制造实业有限公司 | A kind of electric resistance welding method |
| CN101452762B (en) * | 2008-09-18 | 2010-12-15 | 天津市天发重型水电设备制造有限公司 | Pole winding winding and molding method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |