CN103962696A - Tool and method for welding copper pipe and stainless steel pipe - Google Patents
Tool and method for welding copper pipe and stainless steel pipe Download PDFInfo
- Publication number
- CN103962696A CN103962696A CN201410190291.5A CN201410190291A CN103962696A CN 103962696 A CN103962696 A CN 103962696A CN 201410190291 A CN201410190291 A CN 201410190291A CN 103962696 A CN103962696 A CN 103962696A
- Authority
- CN
- China
- Prior art keywords
- stainless steel
- welding
- steel tube
- copper pipe
- receiving electrode
- 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.)
- Granted
Links
- 238000003466 welding Methods 0.000 title claims abstract description 64
- 239000010935 stainless steel Substances 0.000 title claims abstract description 56
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 56
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 35
- 239000010949 copper Substances 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims description 12
- 239000011810 insulating material Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000007791 liquid phase Substances 0.000 abstract description 4
- 229910000881 Cu alloy Inorganic materials 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 abstract 2
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 229910000679 solder Inorganic materials 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
Classifications
-
- 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
- B23K11/02—Pressure butt welding
-
- 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
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/06—Tubes
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/12—Copper or alloys thereof
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
The invention discloses a tool for welding a copper pipe and a stainless steel pipe. The tool comprises a T-type pull rod and a baffle. An external electrode is arranged at the position, needing to be welded, of the exterior of the copper pipe, an internal electrode is arranged at the position, needing to be welded, of the interior of the stainless steel pipe, and the external electrode and the internal electrode are connected with power lines. When the copper pipe and the stainless steel pipe are welded through the welding tool, the internal electrode is extruded by a T-type head of the T-type pull rod, the pressure is transmitted to the wall of the stainless steel pipe, the pressure borne by the wall of the stainless steel pipe ranges from 1.8 Kg/cm2 to 4.5 Kg/cm2, a direct current is applied to enable discharging to be generated between the internal electrode and the external electrode, the discharging time ranges from 70 ms to 240 ms, the maximum current ranges from 18000 A to 35000 A, after welding is completed, the T-type pull rod is pushed to enable the internal electrode to be separated from the stainless steel pipe, and a completely-welded welding piece can be taken out. According to the tool, circumference welding is carried out on the copper pipe or a copper alloy pipe and the stainless steel pipe through the specially-made electric-resistance-welding welding tool and the welding technology, complete liquid-phase nuggets can be obtained, and true welding is achieved.
Description
Technical field
The invention belongs to electric resistance welding technical field, specifically relate to welding tooling and the welding method of a kind of copper pipe and stainless steel tube.
Background technology
At present in metal solder field, to the welding between stainless steel tube and copper pipe etc., great majority all adopt scaling powder to add the mode of gas brazing, between copper pipe and stainless steel tube, adding solder melts solder with the thermal-flame that oxygen adds acetylene again, thereby reach welding object, but the shortcomings such as these welding manners have inefficiency, and welding cost is high, and welding surroundings is poor.
Electric resistance welding is to utilize the resistance of soldered metal itself to pass to the resistance heat producing after electric current, when welding, soldered metal is applied to certain pressure, thereby reach the object of welding, but the fusing point of copper and alloy thereof is 1080 DEG C of left and right, and the fusing point of stainless steel tube is 1470 DEG C of left and right, both fusing points differ approximately 400 DEG C, the metal solder that the method for conventional, electric-resistance weldering is difficult to this two classes fusing point to differ greatly arrives together, a lot of Bian are that copper pipe connects with stainless steel tube solid phase by the result that electric resistance welding method welding copper pipe and stainless steel tube obtain, instead of real liquid phase welding, conventionally cry " dry joint ".
Summary of the invention
The present invention solves the existing technical problem of above-mentioned prior art, and welding tooling and the welding method of a kind of copper pipe and stainless steel tube is provided.
Above-mentioned technical problem of the present invention is mainly solved by following technical proposals: the welding tooling of a kind of copper pipe and stainless steel tube, described welding tooling comprises T-shaped pull bar and baffle plate, on described T-shaped pull bar, T connector is set, at copper pipe outside need weld, external electrode is set, external electrode connecting power line; Need weld that interior receiving electrode is set in stainless steel tube inside, interior receiving electrode connecting power line, the tapering of described T connector is 6～10 degree, when convenient welding, the internal receiving electrode of T-shaped pull bar is exerted pressure.
As preferably, on described interior receiving electrode, tapering is also set, its tapering is consistent with the tapering of T connector, makes interior receiving electrode stressed more even.
As preferably, described T-shaped pull bar is insulating materials manufacture.
Use the method for above-mentioned welding tooling welding copper pipe and stainless steel tube to be: (1), in copper pipe outside, needs weld that external electrode is set, external electrode connecting power line; (2) first stainless steel tube is fixed on baffle plate, then in stainless steel tube inside, needs weld that interior receiving electrode is set, interior receiving electrode connecting power line; (3) T-shaped pull bar is packed into stainless steel tube inside, the T connector of T-shaped pull bar is contacted with interior receiving electrode; (4) stainless steel tube is inserted in copper pipe, makes external electrode and interior receiving electrode on same vertical line; (5) pull T-shaped pull bar, receiving electrode in the T connector extruding of T-shaped pull bar, and transfer the pressure on stainless steel tube wall, the pressure being subject on stainless steel tube wall is 1.8Kg/cm
2to 4.5Kg/cm
2; (6) then by power line to applying direct current on external electrode and interior receiving electrode, between internal and external electrode, discharge, be 70 to 240ms discharge time, maximum current is 18000A to 35000A, weld period T connector continues stainless steel tube wall to apply 1.8Kg/cm
2to 4.5Kg/cm
2pressure; (7) after having welded, promote T-shaped pull bar, make interior receiving electrode depart from stainless steel tube, can take out the weldment having welded.
The beneficial effect that the present invention has: utilize electric resistance welding General Principle, by special electric resistance welding frock and welding procedure, copper pipe or copper alloy tube and stainless steel tube are carried out to boxing and can obtain liquid phase nugget completely, realize real welding.The welding direct current that wherein source of welding current provides, be 70 to 240ms discharge time, and maximum current is 18000A to 35000A, and when welding, welding tooling is 1.8Kg/cm to the pressure of welding copper pipe and stainless steel tube
2to 4.5Kg/cm
2.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the present invention.
Fig. 2 is a kind of structural representation of the present invention while welding.
In figure: 1, copper pipe; 2, stainless steel tube; 3, external electrode; 4, power line; 5, T-shaped pull bar; 6, interior receiving electrode; 7, baffle plate; 8, T connector.
Detailed description of the invention
Below by embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is described in further detail.
Embodiment: as shown in Figure 1, the welding tooling of a kind of copper pipe and stainless steel tube, comprises T-shaped pull bar and baffle plate, on T-shaped pull bar, T connector is set, and at copper pipe outside need weld, external electrode is set, external electrode connecting power line; Need weld that interior receiving electrode is set in stainless steel tube inside, interior receiving electrode connecting power line, the tapering of described T connector is 6～10 degree, when convenient welding, the internal receiving electrode of T-shaped pull bar is exerted pressure; Tapering is also set on interior receiving electrode, and its tapering is consistent with the tapering of T connector, makes interior receiving electrode stressed more even; T-shaped pull bar is insulating materials manufacture.
Use the method for above-mentioned welding tooling welding copper pipe and stainless steel tube to be: (1), in copper pipe outside, needs weld that external electrode is set, external electrode connecting power line; (2) first stainless steel tube is fixed on baffle plate, then in stainless steel tube inside, needs weld that interior receiving electrode is set, interior receiving electrode connecting power line; (3) T-shaped pull bar is packed into stainless steel tube inside, the T connector of T-shaped pull bar is contacted with interior receiving electrode; (4) stainless steel tube is inserted in copper pipe, makes external electrode and interior receiving electrode on same vertical line; (5) pull T-shaped pull bar, receiving electrode in the T connector extruding of T-shaped pull bar, as shown in Figure 2, and transfers the pressure on stainless steel tube wall, and the pressure being subject on stainless steel tube wall is 1.8Kg/cm
2to 4.5Kg/cm
2; (6) then by power line to applying direct current on external electrode and interior receiving electrode, between internal and external electrode, discharge, be 70 to 240ms discharge time, maximum current is 18000A to 35000A, weld period T connector continues stainless steel tube wall to apply 1.8Kg/cm
2to 4.5Kg/cm
2pressure; (7) after having welded, promote T-shaped pull bar, make interior receiving electrode depart from stainless steel tube, can take out the weldment having welded.
The present invention utilizes electric resistance welding General Principle, by special electric resistance welding frock and welding procedure, copper pipe or copper alloy tube and stainless steel tube is carried out to boxing and can obtain liquid phase nugget completely, realizes real welding.The welding direct current that wherein source of welding current provides, be 70 to 240 milliseconds discharge time, and maximum current is 18000A to 35000A, and when welding, welding tooling is 1.8Kg/cm to the pressure of welding copper pipe and stainless steel tube
2to 4.5Kg/cm
2.
Finally, it should be pointed out that above embodiment is only the more representational example of the present invention.Obviously, the invention is not restricted to above-described embodiment, can also have many distortion.Any simple modification, equivalent variations and modification that every foundation technical spirit of the present invention is done above embodiment, all should think and belong to protection scope of the present invention.
Claims (4)
1. a welding tooling for copper pipe and stainless steel tube, is characterized in that described welding tooling comprises T-shaped pull bar and baffle plate, on described T-shaped pull bar, T connector is set, and at copper pipe outside need weld, external electrode is set, external electrode connecting power line; Need weld that interior receiving electrode is set in stainless steel tube inside, interior receiving electrode connecting power line, the tapering of described T connector is 6～10 degree, when convenient welding, the internal receiving electrode of T-shaped pull bar is exerted pressure.
2. the welding tooling of a kind of copper pipe and stainless steel tube according to claim 1, is characterized in that, on described interior receiving electrode, tapering is also set, and its tapering is consistent with the tapering of T connector.
3. according to the welding tooling of a kind of copper pipe and stainless steel tube described in claim 1 or 2, it is characterized in that described T-shaped pull bar is insulating materials manufacture.
4. right to use requires a method for 1～3 arbitrary described welding tooling welding copper pipe and stainless steel tube, it is characterized in that described welding method is:
(1), in copper pipe outside, need weld that external electrode is set, external electrode connecting power line;
(2) first stainless steel tube is fixed on baffle plate, then in stainless steel tube inside, needs weld that interior receiving electrode is set, interior receiving electrode connecting power line;
(3) T-shaped pull bar is packed into stainless steel tube inside, the T connector of T-shaped pull bar is contacted with interior receiving electrode;
(4) stainless steel tube is inserted in copper pipe, makes external electrode and interior receiving electrode on same vertical line;
(5) pull T-shaped pull bar, receiving electrode in the T connector extruding of T-shaped pull bar, and transfer the pressure on stainless steel tube wall, the pressure being subject on stainless steel tube wall is 1.8Kg/cm
2to 4.5Kg/cm
2;
(6) then by power line to applying direct current on external electrode and interior receiving electrode, between internal and external electrode, discharge, be 70 to 240ms discharge time, maximum current is 18000A to 35000A, weld period T connector continues stainless steel tube wall to apply 1.8Kg/cm
2to 4.5Kg/cm
2pressure;
(7) after having welded, promote T-shaped pull bar, make interior receiving electrode depart from stainless steel tube, can take out the weldment having welded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410190291.5A CN103962696B (en) | 2014-05-07 | 2014-05-07 | Tool and method for welding copper pipe and stainless steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410190291.5A CN103962696B (en) | 2014-05-07 | 2014-05-07 | Tool and method for welding copper pipe and stainless steel pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103962696A true CN103962696A (en) | 2014-08-06 |
| CN103962696B CN103962696B (en) | 2015-07-08 |
Family
ID=51232963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410190291.5A Expired - Fee Related CN103962696B (en) | 2014-05-07 | 2014-05-07 | Tool and method for welding copper pipe and stainless steel pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103962696B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111590180A (en) * | 2020-06-23 | 2020-08-28 | 爱美达（深圳）热能***有限公司 | Resistance welding equipment and welding method of heat pipe |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07246478A (en) * | 1994-03-09 | 1995-09-26 | Mitsubishi Nuclear Fuel Co Ltd | Method for welding end plug of fuel rod |
| CN101319741A (en) * | 2007-06-04 | 2008-12-10 | 左铁军 | Plug-in type copper aluminum pipe welded joint and method of producing the same |
| CN101382215A (en) * | 2007-09-05 | 2009-03-11 | 左铁军 | Copper and aluminium connecting tubes with hard sleeve and method for making same |
| CN101653860A (en) * | 2009-03-11 | 2010-02-24 | 江苏星星家电科技有限公司 | Resistance welding method for conducting and heating by utilizing resistance values of different metal materials |
| CN102909470A (en) * | 2012-10-19 | 2013-02-06 | 东莞市金瑞五金制品有限公司 | Production process for realizing welding of copper and iron |
-
2014
- 2014-05-07 CN CN201410190291.5A patent/CN103962696B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07246478A (en) * | 1994-03-09 | 1995-09-26 | Mitsubishi Nuclear Fuel Co Ltd | Method for welding end plug of fuel rod |
| CN101319741A (en) * | 2007-06-04 | 2008-12-10 | 左铁军 | Plug-in type copper aluminum pipe welded joint and method of producing the same |
| CN101382215A (en) * | 2007-09-05 | 2009-03-11 | 左铁军 | Copper and aluminium connecting tubes with hard sleeve and method for making same |
| CN101653860A (en) * | 2009-03-11 | 2010-02-24 | 江苏星星家电科技有限公司 | Resistance welding method for conducting and heating by utilizing resistance values of different metal materials |
| CN102909470A (en) * | 2012-10-19 | 2013-02-06 | 东莞市金瑞五金制品有限公司 | Production process for realizing welding of copper and iron |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111590180A (en) * | 2020-06-23 | 2020-08-28 | 爱美达（深圳）热能***有限公司 | Resistance welding equipment and welding method of heat pipe |
| CN111590180B (en) * | 2020-06-23 | 2022-02-18 | 爱美达（深圳）热能***有限公司 | Resistance welding equipment and welding method of heat pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103962696B (en) | 2015-07-08 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 |
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| CF01 | Termination of patent right due to non-payment of annual fee |