CN1836815A - Soft vacuum brazing process for aluminum alloy workpiece - Google Patents
Soft vacuum brazing process for aluminum alloy workpiece Download PDFInfo
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- CN1836815A CN1836815A CN 200510033834 CN200510033834A CN1836815A CN 1836815 A CN1836815 A CN 1836815A CN 200510033834 CN200510033834 CN 200510033834 CN 200510033834 A CN200510033834 A CN 200510033834A CN 1836815 A CN1836815 A CN 1836815A
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Abstract
The present invention is low vacuum brazing process of aluminum alloy workpiece, and belongs to the field of metal welding technology. The low vacuum brazing process includes the following steps: setting aluminum alloy workpiece and small amount of magnesium powder inside vacuum furnace and evacuating the furnace to 0.1-5 Pa with one vacuum system; heating at rise rate of 10-30 deg.c/min to 500-600 deg.c to expand the aluminum alloy workpiece and stretch its surface; maintaining for homogenizing the temperature; heating for the second time in the rise rate of 15-20 deg.c/min to 620-640 deg.c; and maintaining for 3-20 min to complete the brazing. The process has simple operation, low cost, short brazing period, low power consumption and good brazing effect.
Description
Technical field:
The present invention relates to a kind of soft vacuum brazing process of Al alloy parts, it belongs to the vacuum brazing field in metal solder field, particularly metal.
Background technology:
Existing aluminium alloy brazing adopts high vacuum soldering and two kinds of technology of atmosphere soldering usually.High vacuum soldering vacuum requires high, needs 10
-2The vacuum that Pa is above.The process that such vacuum need vacuumize by two-stage just can reach needed vacuum, and brazing equipment need be equipped with diffusion pump, and therefore existing soldering tech investment is high, and the holding time is long, and efficient is low; The atmosphere protection soldering needs the fluoride salt scaling powder, and scaling powder very easily corrodes vacuum equipment and other frock, and welding reliability is low.
Summary of the invention:
Content of the present invention provides that a kind of technology is simple, and processing cost is low, the low vacuum soldering tech of the Al alloy parts that soldering reliability is high.
A kind of low vacuum soldering tech of Al alloy parts is characterized in that it comprises following processing step:
A: vacuumize: just have the magnesium powder Al alloy parts or Al alloy parts and small amount of magnesium powder put into vacuum drying oven, after Al alloy parts advances stove, utilize pumped vacuum systems to vacuumize in the vacuum drying oven, make its vacuum reach 0.1-5Pa;
B: heating is rapidly heated: reach the vacuum of expection in stove after, programming rate with per minute 10-30 ℃ improves temperature in the stove rapidly, be warmed up to 500-600 ℃, Al alloy parts is expanded, the surface is stretched, and under the effect of magnesium powder, Al alloy parts surface alchlor is broken, expose fresh aluminium surface; Being incubated in all stoves Al alloy parts then, to reach temperature even;
C: secondary temperature elevation heating: with per minute 15-20 ℃ programming rate, once more temperature in the stove is raised to 620 ℃-640 ℃ rapidly, keeps 3-20 minute temperature, welding can be finished after the solder fusing.
Described vacuum drying oven is external heat formula hot wall vacuum furnace or inner heated type shell water-cooled cold wall vacuum furnace.
Described pumped vacuum systems is the combination of any and lobe pump in water ring vacuum pump, oil ring vacuum pump, sliding vane rotary vacuum pump, sliding valve vacuum pump, the dry vacuum pump.
Process of the present invention is simple, can save the equipment manufacturing cost cost, reduces pumping high vacuum processing apparatus expense and maintaining expense, shortens cycle weld interval, increases the benefit, and can reach the purpose of energy savings, has good welding effect simultaneously.
The specific embodiment:
Be embodiments of the invention with the welding of aluminum heater element below, the present invention is described further:
Content of the present invention provides that a kind of technology is simple, and processing cost is low, the soft vacuum brazing process step of the Al alloy parts that soldering reliability is high:
Vacuumize: at first soldered aluminium heater element and small amount of magnesium powder are positioned in the hot wall vacuum furnace, after aluminium heater element and small amount of magnesium powder advance stove, utilize the combination of water ring vacuum pump and lobe pump to vacuumize in the hot wall vacuum furnace, make that the vacuum in its hot wall vacuum furnace reaches 1.5Pa; With vacuum pumping in the hot wall vacuum furnace, can take out the steam that anhydrates, oil vapour fast rapidly, the generation that reduces oxide layer is to satisfy the welding demand.
Heating is rapidly heated: after the vacuum that reaches expection in the hot wall vacuum furnace, heating improves temperature in the stove rapidly, programming rate with 20 ℃ of per minutes, be warmed up to 587 ℃, Al alloy parts is expanded, the surface is stretched, and under the effect of magnesium powder, Al alloy parts surface alchlor is broken, expose fresh aluminium surface, can strengthen welding effect like this.Being incubated in all stoves the aluminium heater element then, to reach temperature even.It is same as the prior art that described stretching adds magnesium powder technology.
Secondary temperature elevation heating: when the temperature of the aluminium heater element in the stove evenly after, with the programming rate of 15 ℃ of per minutes, rapidly temperature in the stove is raised to 635 ℃ again, and keeps 3-20 minute temperature, welding is finished after the solder fusing.
Claims (3)
1, a kind of soft vacuum brazing process of Al alloy parts is characterized in that it comprises following processing step:
A: vacuumize: will have the magnesium powder Al alloy parts or Al alloy parts and small amount of magnesium powder put into vacuum drying oven, after Al alloy parts advances stove, utilize pumped vacuum systems to vacuumize in the vacuum drying oven, make its vacuum reach 0.1-5Pa;
B: heating is rapidly heated: reach the vacuum of expection in stove after, programming rate with per minute 10-30 ℃ improves temperature in the stove rapidly, be warmed up to 500-600 ℃, Al alloy parts is expanded, the surface is stretched, and under the effect of magnesium powder, Al alloy parts surface alchlor is broken, expose fresh aluminium surface; Being incubated in all stoves Al alloy parts then, to reach temperature even;
C: secondary temperature elevation heating: with per minute 15-25 ℃ programming rate, once more temperature in the stove is raised to 620-640 ℃ rapidly, keeps 3-20 minute temperature, welding can be finished after the solder fusing.
2, the low vacuum soldering tech of the Al alloy parts described in claim 1 is characterized in that vacuum drying oven is external heat formula hot wall vacuum furnace or inner heated type shell water-cooled cold wall vacuum furnace.
3, the low vacuum soldering tech of the Al alloy parts described in claim 1 is characterized in that described pumped vacuum systems is the combination of any and lobe pump in water ring vacuum pump, oil ring vacuum pump, sliding vane rotary vacuum pump, sliding valve vacuum pump, the dry vacuum pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100338343A CN100427257C (en) | 2005-03-24 | 2005-03-24 | Soft vacuum brazing process for aluminum alloy workpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100338343A CN100427257C (en) | 2005-03-24 | 2005-03-24 | Soft vacuum brazing process for aluminum alloy workpiece |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1836815A true CN1836815A (en) | 2006-09-27 |
| CN100427257C CN100427257C (en) | 2008-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100338343A Expired - Fee Related CN100427257C (en) | 2005-03-24 | 2005-03-24 | Soft vacuum brazing process for aluminum alloy workpiece |
Country Status (1)
| Country | Link |
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| CN (1) | CN100427257C (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101774054A (en) * | 2010-03-11 | 2010-07-14 | 江苏海维科技发展有限公司 | Welding method of water-cooled baffle of focusing coil for accelerating tube |
| CN102284758A (en) * | 2011-07-06 | 2011-12-21 | 重庆理工大学 | Magnesium alloy and aluminum alloy heterogeneous non-vacuum machinery forced rotation semi-solid brazing method |
| CN103111784A (en) * | 2013-02-16 | 2013-05-22 | 大连宏海新能源发展有限公司 | Brazing locating device of heating-head member of Sterling engine and vacuum brazing technique |
| CN103157864A (en) * | 2011-12-12 | 2013-06-19 | 贵州永红航空机械有限责任公司 | Vacuum brazing process of aluminium water-gas separator |
| CN103192151A (en) * | 2013-04-16 | 2013-07-10 | 中国电子科技集团公司第三十八研究所 | Aluminum alloy vacuum brazing method with directional magnesium vapor slow-release |
| CN105057826A (en) * | 2015-08-06 | 2015-11-18 | 贵州航天电子科技有限公司 | Vacuum brazing method for radio fuze antenna radiator |
| CN105880771A (en) * | 2016-05-31 | 2016-08-24 | 广东东睦新材料有限公司 | Sintering welding process of high-air-tightness powder metallurgical part |
| CN111037022A (en) * | 2020-01-07 | 2020-04-21 | 南通艾斯安液压科技有限公司 | Vacuum brazing process for aluminum radiator |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102744482B (en) * | 2012-07-31 | 2014-12-31 | 郑州机械研究所 | Method using vacuum brazing device to braze aluminum alloy workpiece |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3673678A (en) * | 1970-05-08 | 1972-07-04 | Alco Standard Corp | Fluxless brazing process |
| US3979043A (en) * | 1975-10-17 | 1976-09-07 | Wall Colmonoy Corporation | Aluminum brazing method |
| JP3074811B2 (en) * | 1991-07-29 | 2000-08-07 | 石川島播磨重工業株式会社 | Vacuum aluminum brazing furnace |
| JP3409231B2 (en) * | 1995-09-28 | 2003-05-26 | コニカ株式会社 | Zoom lens |
| CN1161263A (en) * | 1996-04-02 | 1997-10-08 | 杨昌海 | Aluminium soldering tech. with no shielded gas |
-
2005
- 2005-03-24 CN CNB2005100338343A patent/CN100427257C/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101774054A (en) * | 2010-03-11 | 2010-07-14 | 江苏海维科技发展有限公司 | Welding method of water-cooled baffle of focusing coil for accelerating tube |
| CN102284758A (en) * | 2011-07-06 | 2011-12-21 | 重庆理工大学 | Magnesium alloy and aluminum alloy heterogeneous non-vacuum machinery forced rotation semi-solid brazing method |
| CN103157864A (en) * | 2011-12-12 | 2013-06-19 | 贵州永红航空机械有限责任公司 | Vacuum brazing process of aluminium water-gas separator |
| CN103157864B (en) * | 2011-12-12 | 2016-08-24 | 贵州永红航空机械有限责任公司 | Aluminium alloy water, gas separating device vacuum brazing technique |
| CN103111784A (en) * | 2013-02-16 | 2013-05-22 | 大连宏海新能源发展有限公司 | Brazing locating device of heating-head member of Sterling engine and vacuum brazing technique |
| CN103192151A (en) * | 2013-04-16 | 2013-07-10 | 中国电子科技集团公司第三十八研究所 | Aluminum alloy vacuum brazing method with directional magnesium vapor slow-release |
| CN103192151B (en) * | 2013-04-16 | 2015-04-29 | 中国电子科技集团公司第三十八研究所 | Aluminum alloy vacuum brazing method with directional magnesium vapor slow-release |
| CN105057826A (en) * | 2015-08-06 | 2015-11-18 | 贵州航天电子科技有限公司 | Vacuum brazing method for radio fuze antenna radiator |
| CN105880771A (en) * | 2016-05-31 | 2016-08-24 | 广东东睦新材料有限公司 | Sintering welding process of high-air-tightness powder metallurgical part |
| CN105880771B (en) * | 2016-05-31 | 2018-09-11 | 广东东睦新材料有限公司 | A kind of high-air-tightness powdered metal parts sintering and welding process |
| CN111037022A (en) * | 2020-01-07 | 2020-04-21 | 南通艾斯安液压科技有限公司 | Vacuum brazing process for aluminum radiator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100427257C (en) | 2008-10-22 |
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Owner name: SHENZHEN CITY JINKE SPECIES MATERIALS CO., LTD. Free format text: FORMER OWNER: GAO ZHANGFU Effective date: 20080104 |
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Effective date of registration: 20080104 Address after: No. 8 Jinke city of Shenzhen province Guangdong post encoding Qiong Yu Lu, Nanshan District science and Technology Park: 518057 Applicant after: Shenzhen Jinke Special Materials Co., Ltd. Address before: 8, Qiong Yu Road, Nanshan District Science Park, Guangdong, Shenzhen Province, China: 518057 Applicant before: Gao Changfu |
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