CN103962696B - 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
- CN103962696B CN103962696B CN201410190291.5A CN201410190291A CN103962696B CN 103962696 B CN103962696 B CN 103962696B CN 201410190291 A CN201410190291 A CN 201410190291A CN 103962696 B CN103962696 B CN 103962696B
- Authority
- CN
- China
- Prior art keywords
- stainless steel
- steel tube
- welding
- 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.)
- Expired - Fee Related
Links
- 238000003466 welding Methods 0.000 title claims abstract description 61
- 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 11
- 239000011810 insulating material Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims 2
- 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 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 229910000679 solder Inorganic materials 0.000 description 3
- 238000005219 brazing Methods 0.000 description 2
- 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
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 239000000945 filler Substances 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, namely between copper pipe and stainless steel tube, add solder add the thermal-flame of acetylene brazing filler metal melts with oxygen again, thus reach welding object, but these welding manners have inefficiency, and welding cost is high, the shortcomings such as welding surroundings difference.
Electric resistance welding is the resistance heat produced after utilizing the resistance of soldered metal itself to pass to electric current, during welding, certain pressure is applied to soldered metal, thus reach the object of welding, but the fusing point of copper and alloy thereof is about 1080 DEG C, and the fusing point of stainless steel tube is about 1470 DEG C, both fusing point differences about 400 DEG C, the method of conventional, electric-resistance weldering is difficult to the metal solder that differed greatly by this two classes fusing point to together, the result that a lot of Bian electric resistance welding method welding copper pipe and stainless steel tube obtain is all that copper pipe connects with stainless steel tube solid phase, instead of real liquid phase welding, usually cry " dry joint ".
Summary of the invention
The present invention mainly solves the technical problem existing for above-mentioned prior art, provides welding tooling and the welding method of a kind of copper pipe and stainless steel tube.
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, described T-shaped pull bar arranges T connector, external electrode is set at copper pipe outside need weld, external electrode connecting power line; Need weld to arrange interior receiving electrode in stainless steel tube inside, interior receiving electrode connecting power line, the tapering of described T connector is 6 ~ 10 degree, and during convenient welding, the internal receiving electrode of T-shaped pull bar applies pressure.
As preferably, described interior receiving electrode also arranges tapering, and 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.
The method using above-mentioned welding tooling to weld copper pipe and stainless steel tube is: (1) is outside at copper pipe, needs weld to arrange external electrode, external electrode connecting power line; (2) first stainless steel tube is fixed on baffle plate, then inner at stainless steel tube, need 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 be 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 that stainless steel tube wall is subject to is 1.8Kg/cm
2to 4.5Kg/cm
2; (6) then apply direct current by power line on external electrode and interior receiving electrode, discharge between internal and external electrode, discharge time is 70 to 240ms, and maximum current is 18000A to 35000A, and weld period T connector continues to apply 1.8Kg/cm to stainless steel tube wall
2to 4.5Kg/cm
2pressure; (7) after having welded, promote T-shaped pull bar, make interior receiving electrode depart from stainless steel tube, the weldment welded can be taken out.
The beneficial effect that the present invention has: utilize electric resistance welding General Principle, by special electric resistance welding frock and welding procedure, carries out boxing to copper pipe or copper alloy tube and stainless steel tube and can obtain liquid phase nugget completely, realize real welding.The wherein welding direct current that provides of the source of welding current, discharge time is 70 to 240ms, and maximum current is 18000A to 35000A, and during welding, the pressure of welding tooling to welding copper pipe and stainless steel tube is 1.8Kg/cm
2to 4.5Kg/cm
2.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present invention.
Fig. 2 is a kind of structural representation of the present invention when 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, and T-shaped pull bar arranges T connector, arranges external electrode, external electrode connecting power line at copper pipe outside need weld; Need weld to arrange interior receiving electrode in stainless steel tube inside, interior receiving electrode connecting power line, the tapering of described T connector is 6 ~ 10 degree, and during convenient welding, the internal receiving electrode of T-shaped pull bar applies pressure; Interior receiving electrode also arranges tapering, 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.
The method using above-mentioned welding tooling to weld copper pipe and stainless steel tube is: (1) is outside at copper pipe, needs weld to arrange external electrode, external electrode connecting power line; (2) first stainless steel tube is fixed on baffle plate, then inner at stainless steel tube, need 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 be 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 transfer the pressure on stainless steel tube wall, the pressure that stainless steel tube wall is subject to is 1.8Kg/cm
2to 4.5Kg/cm
2; (6) then apply direct current by power line on external electrode and interior receiving electrode, discharge between internal and external electrode, discharge time is 70 to 240ms, and maximum current is 18000A to 35000A, and weld period T connector continues to apply 1.8Kg/cm to stainless steel tube wall
2to 4.5Kg/cm
2pressure; (7) after having welded, promote T-shaped pull bar, make interior receiving electrode depart from stainless steel tube, the weldment welded can be taken out.
The present invention utilizes electric resistance welding General Principle, by special electric resistance welding frock and welding procedure, carries out boxing and can obtain liquid phase nugget completely, realize real welding to copper pipe or copper alloy tube and stainless steel tube.The wherein welding direct current that provides of the source of welding current, discharge time is 70 to 240 milliseconds, and maximum current is 18000A to 35000A, and during welding, the pressure of welding tooling to welding copper pipe and stainless steel tube is 1.8Kg/cm
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, many distortion can also be had.Every above embodiment is done according to technical spirit of the present invention any simple modification, equivalent variations and modification, 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, arranges extrusion head, arranges external electrode at copper pipe outside need weld, it is characterized in that described welding tooling comprises T-shaped pull bar and baffle plate, described T-shaped pull bar arranges T connector, external electrode connecting power line; Need weld to arrange interior receiving electrode in stainless steel tube inside, interior receiving electrode connecting power line, the tapering of described T connector is 6 ~ 10 degree, and during convenient welding, the internal receiving electrode of T-shaped pull bar applies pressure.
2. the welding tooling of a kind of copper pipe and stainless steel tube according to claim 1, it is characterized in that described interior receiving electrode also arranges tapering, its tapering is consistent with the tapering of T connector.
3. the welding tooling of a kind of copper pipe and stainless steel tube according to claim 1 or 2, is characterized in that described T-shaped pull bar is insulating materials manufacture.
4. the arbitrary described welding tooling of claim 1 ~ 3, arranges extrusion head, arranges external electrode at copper pipe outside need weld, it is characterized in that the method using this welding tooling to weld copper pipe and stainless steel tube is:
(1) external electrode connecting power line;
(2) first stainless steel tube is fixed on baffle plate, then inner at stainless steel tube, need 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 be 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 that stainless steel tube wall is subject to is 1.8Kg/cm2 to 4.5Kg/cm2;
(6) then direct current is applied by power line on external electrode and interior receiving electrode, discharge between internal and external electrode, discharge time is 70 to 240ms, and maximum current is 18000A to 35000A, and weld period T connector continues pressure stainless steel tube wall being applied to 1.8Kg/cm2 to 4.5Kg/cm2;
(7) after having welded, promote T-shaped pull bar, make interior receiving electrode depart from stainless steel tube, the weldment welded can be taken out.
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 CN103962696A (en) | 2014-08-06 |
| CN103962696B true 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) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111590180B (en) * | 2020-06-23 | 2022-02-18 | 爱美达（深圳）热能系统有限公司 | Resistance welding equipment and welding method of heat pipe |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Family Cites Families (1)
| 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 |
-
2014
- 2014-05-07 CN CN201410190291.5A patent/CN103962696B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103962696A (en) | 2014-08-06 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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Granted publication date: 20150708 |
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| CF01 | Termination of patent right due to non-payment of annual fee |