CN103753008B - Copper pipe enlarging is at copper-aluminium thin-wall tube method for resistance welding - Google Patents
Copper pipe enlarging is at copper-aluminium thin-wall tube method for resistance welding Download PDFInfo
- Publication number
- CN103753008B CN103753008B CN201310700993.9A CN201310700993A CN103753008B CN 103753008 B CN103753008 B CN 103753008B CN 201310700993 A CN201310700993 A CN 201310700993A CN 103753008 B CN103753008 B CN 103753008B
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- Prior art keywords
- welding
- copper pipe
- copper
- pipe
- enlarging
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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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
- B23K31/027—Making tubes with soldering or 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
- B23K11/16—Resistance welding; Severing by resistance heating taking account of the properties of the material to be welded
- B23K11/20—Resistance welding; Severing by resistance heating taking account of the properties of the material to be welded of different metals
-
- 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
- B23K11/34—Preliminary treatment
-
- 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
- B23K2103/10—Aluminium or alloys thereof
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Resistance Welding (AREA)
Abstract
A kind of copper pipe enlarging, at copper-aluminium thin-wall tube method for resistance welding, adopts following steps: copper pipe blanking, copper pipe enlarging, cleaning, reducing, electric resistance welding; Electric resistance welding adopts following steps: 1, open resistance welder power supply, welding parameter regulated by the scope that subordinate list is given.Whether 2, to fetch boiling water circulation motor, observe water route and circulate normally, next step work is carried out at the normal rear of water circulation.3, process duct debugging welding, ready copper pipe process duct and aluminum pipe process duct are docked, then will be placed in slot electrode to the aluminum pipe connected and copper pipe, laying method is that aluminum pipe is placed on the fixture that electrode is housed, the justified margin of aluminum pipe edge and electrode, copper pipe is placed in red copper electrode.4, step on the floor push of welding machine, welding machine carries out automatic welding, after the upper and lower fixture of welding machine opens, take out part, the aluminium pill produced after then removing welding.
Description
Technical field
The present invention relates to a kind of copper pipe enlarging at copper-aluminium thin-wall tube method for resistance welding.
Background technology
Electric resistance welding (resistancewelding) is pressed in by welded piece between two electrodes, and impose electric current, the resistance heat effect utilizing electric current to flow through work piece interface and adjacent domain generation is heated fusing or mecystasis, makes it a kind of method forming corrupt split.
One, present situation on product and technical requirement:
Material specification: aluminum pipe 1060-O φ 8 × 0.75mm carries out docking with copper pipe TU2M φ 8 × 0.75mm and copper pipe TU2M φ 6 × 0.75mm and welds.
Technical requirement:
1, rear surface is welded without weighing wounded;
2, the bonding length >=4mm after welding;
3, welding (evenly the dissecting four parts of Lars inspections) intensity after welding meets the requirements.
Processing difficulties: because electric resistance welding is in the process of welding, need carry out φ 8 × 0.75mm aluminum pipe and φ 8 × 0.75mm copper pipe and switch between φ 8 × 0.75mm aluminum pipe and φ 6 × 0.75mm copper pipe, so must clamp-replacing be carried out after each more conversion materials, need after clamp-replacing to regulate the series of parameters such as welding current, time, be not easy to carry out quality and manufacturing schedule control.
Two, the technology situation of major part employing now:
1, any process is not carried out in aluminum pipe 1060-O φ 8 × 0.75mm welding end, copper pipe TU2M φ 8 × 0.75mm is carried out reducing process, then aluminum pipe and copper pipe is welded by resistance welder.
2, any process is not carried out in aluminum pipe 1060-O φ 8 × 0.75mm welding end, after first for copper pipe TU2M φ 6 × 0.75mm enlarging to external diameter φ 8 length 8-10mm, is carrying out reducing process, then aluminum pipe and copper pipe is being welded by resistance welder.
Shortcoming: the replacing that weld jig must be carried out like this when welding, and welding current, the time after changing must reset, just can reach the length after welding and requirement of strength, and change that fixture is follow-up carries out a series of inspection work strictly to guarantee that product quality meets the requirements.
Summary of the invention
The object of the invention is to overcome deficiency of the prior art, thus provide a kind of copper pipe enlarging at copper-aluminium thin-wall tube method for resistance welding.
A kind of copper pipe enlarging, at copper-aluminium thin-wall tube method for resistance welding, adopts following steps:
Step one, copper pipe blanking: φ 6 × 0.75mm copper pipe is carried out blanking by process stipulation length.
Step 2, copper pipe enlarging: the enlarging on pipe-expanding machine of φ 6 × 0.75mm copper pipe, to external diameter φ 8 ± 0.1mm, length 20-35mm, is checked that enlarging rear surface quality can not have bulge, pull or crack defect.
Step 3, cleaning: carried out by the semi-finished product after enlarging soaking, rinsing and wash in trichloro-ethylene, soak time is 2-5min, then rinses and washes 10-15s.
Step 4, reducing: the copper pipe semi-finished product after cleaning are carried out reducing, and reducing length, external diameter meet technological requirement.
Step 5, electric resistance welding, adopt following steps:
Step 1, open resistance welder power supply, welding parameter is regulated by the scope that subordinate list is given.
Whether step 2, circulation motor of fetching boiling water, observe water route and circulate normally, next step work is carried out at the normal rear of water circulation.
Step 3, process duct debugging welding, ready copper pipe process duct and aluminum pipe process duct are docked, then will be placed in slot electrode to the aluminum pipe connected and copper pipe, laying method is that aluminum pipe is placed on the fixture that electrode is housed, the justified margin of aluminum pipe edge and electrode, copper pipe is placed in red copper electrode.
Step 4, step on the floor push of welding machine, welding machine carries out automatic welding, welding current 6-12A, weldingvoltage 380 ± 5V, weld interval 0.5-1.2s, welding time delay 0.3-0.8s, retention time 0.1-0.6s, welding pressure 0.38-0.62MPa, part is taken out after the upper and lower fixture of welding machine opens, then the aluminium pill produced after removing welding, observe the surface quality after welding, can not there be ring, burning in the surface after welding or have damaged defect by pressure.
The beneficial effect of employing technique scheme is:
The present invention improves rear φ 8 and increases due to length, can directly and the general secondary weld jig of copper pipe TU2M φ 8 × 0.75mm, not change at needs to weld jig; When welding except the inspection of necessity controls, no longer need to carry out a series of measuring means after changing fixture.Thus be conducive to the control of quality and manufacturing schedule.
Detailed description of the invention
Below the present invention is described in further detail:
A kind of copper pipe enlarging, at copper-aluminium thin-wall tube method for resistance welding, adopts following steps:
Step one, copper pipe blanking: φ 6 × 0.75mm copper pipe is carried out blanking by process stipulation length.
Step 2, copper pipe enlarging: by φ 6 × 0.75mm copper pipe on pipe-expanding machine enlarging to external diameter φ 8 ± 0.1mm, length 20-35mm, check enlarging rear surface quality can not bulge again, pull or crack defect.
Step 3, cleaning: carried out by the semi-finished product after enlarging soaking, rinsing and wash in trichloro-ethylene, soak time is 2-5min, then rinses and washes 10-15s.
Step 4, reducing: the copper pipe semi-finished product after cleaning are carried out reducing, and reducing length, external diameter meet technological requirement.
Step 5, electric resistance welding, adopt following steps:
Step 1, open resistance welder power supply, welding parameter is regulated by the scope that subordinate list is given.
Whether step 2, circulation motor of fetching boiling water, observe water route and circulate normally, next step work is carried out at the normal rear of water circulation.
Step 3, process duct debugging welding, ready copper pipe process duct and aluminum pipe process duct are docked, then will be placed in slot electrode to the aluminum pipe connected and copper pipe, laying method is that aluminum pipe is placed on the fixture that electrode is housed, the justified margin of aluminum pipe edge and electrode, copper pipe is placed in red copper electrode.
Step 4, step on the floor push of welding machine, welding machine carries out automatic welding, welding current 6-12A, weldingvoltage 380 ± 5V, weld interval 0.5-1.2s, welding time delay 0.3-0.8s, retention time 0.1-0.6s, welding pressure 0.38-0.62MPa, part is taken out after the upper and lower fixture of welding machine opens, then the aluminium pill produced after removing welding, observe the surface quality after welding, can not there be ring, burning in the surface after welding or have damaged defect by pressure.
Claims (1)
1. copper pipe enlarging is at a copper-aluminium thin-wall tube method for resistance welding, it is characterized in that: adopt following steps:
Step one, copper pipe blanking: φ 6 × 0.75mm copper pipe is carried out blanking by process stipulation length;
Step 2, copper pipe enlarging: the enlarging on pipe-expanding machine of φ 6 × 0.75mm copper pipe, to external diameter φ 8 ± 0.1mm, length 20-35mm, is checked that enlarging rear surface quality can not have bulge, pull or crack defect;
Step 3, cleaning: carried out by the semi-finished product after enlarging soaking, rinsing and wash in trichloro-ethylene, soak time is 2-5min, then rinses and washes 10-15s;
Step 4, reducing: the copper pipe semi-finished product after cleaning are carried out reducing, and reducing length, external diameter meet technological requirement;
Step 5, electric resistance welding, adopt following steps:
Step 1, open resistance welder power supply, welding parameter is regulated by the scope that subordinate list is given;
Step 2, circulation motor of fetching boiling water, whether observe water route and circulate normally, next step work is carried out at the normal rear of water circulation;
Step 3, process duct debugging welding, ready copper pipe process duct and aluminum pipe process duct are docked, then will be placed in slot electrode to the aluminum pipe connected and copper pipe, laying method is that aluminum pipe is placed on the fixture that electrode is housed, the justified margin of aluminum pipe edge and electrode, copper pipe is placed in red copper electrode;
Step 4, step on the floor push of welding machine, welding machine carries out automatic welding, welding current 6-12A, weldingvoltage 380 ± 5V, weld interval 0.5-1.2s, welding time delay 0.3-0.8s, retention time 0.1-0.6s, welding pressure 0.38-0.62MPa, part is taken out after the upper and lower fixture of welding machine opens, then the aluminium pill produced after removing welding, observe the surface quality after welding, can not there be ring, burning in the surface after welding or have damaged defect by pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310700993.9A CN103753008B (en) | 2013-12-19 | 2013-12-19 | Copper pipe enlarging is at copper-aluminium thin-wall tube method for resistance welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310700993.9A CN103753008B (en) | 2013-12-19 | 2013-12-19 | Copper pipe enlarging is at copper-aluminium thin-wall tube method for resistance welding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103753008A CN103753008A (en) | 2014-04-30 |
| CN103753008B true CN103753008B (en) | 2016-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310700993.9A Expired - Fee Related CN103753008B (en) | 2013-12-19 | 2013-12-19 | Copper pipe enlarging is at copper-aluminium thin-wall tube method for resistance welding |
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| CN (1) | CN103753008B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107775167A (en) * | 2016-08-24 | 2018-03-09 | 浙江康盛股份有限公司 | A kind of Cu-AL pipe thermal resistance composite connecting method |
| CN112536522B (en) * | 2019-09-23 | 2023-11-17 | 常州市常蒸制冷科技有限公司 | Full-automatic resistance welder for copper aluminum pipe |
| CN114515942A (en) * | 2022-04-02 | 2022-05-20 | 武汉银海铜业有限公司 | Traceless welding process for internal thread copper pipe |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2504469B2 (en) * | 1987-06-25 | 1996-06-05 | 亮拿 佐藤 | Butt resistance welding method for pipes |
| CN2813184Y (en) * | 2005-06-20 | 2006-09-06 | 赵华 | Thin wall metal welding structure |
| CN101070937A (en) * | 2007-02-02 | 2007-11-14 | 深圳市沃尔核材股份有限公司 | Copper-aluminium pipe connection device for welding |
| CN201014083Y (en) * | 2007-03-30 | 2008-01-30 | 朱弋 | Copper-aluminium welding pipe |
| CN101319741B (en) * | 2007-06-04 | 2011-05-04 | 左铁军 | Plug-in type copper aluminum pipe welded joint and method of producing the same |
| CN201196315Y (en) * | 2007-12-14 | 2009-02-18 | 赵越 | Connecting structure of thin-wall copper pipe and thin-wall aluminum pipe |
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- 2013-12-19 CN CN201310700993.9A patent/CN103753008B/en not_active Expired - Fee Related
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| CN103753008A (en) | 2014-04-30 |
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Granted publication date: 20160420 Termination date: 20201219 |
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