CN103056469A - Method for large-area brazing of stainless steel sheet and aluminum sheet - Google Patents
Method for large-area brazing of stainless steel sheet and aluminum sheet Download PDFInfo
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- CN103056469A CN103056469A CN 201310025343 CN201310025343A CN103056469A CN 103056469 A CN103056469 A CN 103056469A CN 201310025343 CN201310025343 CN 201310025343 CN 201310025343 A CN201310025343 A CN 201310025343A CN 103056469 A CN103056469 A CN 103056469A
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Abstract
The invention relates to a method for large-area brazing of a stainless steel sheet and an aluminum sheet. The method includes following steps: rolling a stainless steel sheet needed to be brazed and an aluminum strip to be combined into a stainless steel-aluminum composite plate, subjecting the aluminum-side surface of the composite plate and the surface of an aluminum sheet needed to be brazed to cleaning and oil removal, coating brazing flux, bestrewing silicon-aluminum welding lugs in the middle, and disposing in a brazing furnace for brazing after tightly stacking and fixing. By the method, large-area brazing of the stainless steel sheet and the aluminum sheet is realized, bonding strength of the stainless steel sheet and the aluminum sheet is good, process is simple, and the technical scheme is easy to implement.
Description
One, technical field
The present invention relates to the method for a kind of stainless sheet steel and aluminium sheet large-area brazing, be used for stainless steel and aluminium soldering.
Two, background technology
Because solid solubility is very low between the two, thermophysical property difference is large for aluminium and stainless steel, cause very large stress during connection, and the oxide-film of aluminium and stainless steel surfaces is very firm, very easily react the intermetallic compound that generates fragility in the welding process, plasticity and the toughness of joint have been reduced, severe exacerbation the mechanical property of joint, therefore, present stainless sheet steel and aluminium sheet large-area brazing solution preferably not also.
Three, summary of the invention
(1) goal of the invention
For the problem that will solve in the above-mentioned prior art, the objective of the invention is to propose the method for a kind of stainless sheet steel and aluminium sheet large-area brazing, realize stainless sheet steel and aluminium sheet large-area brazing.
(2) technical scheme
The present invention is achieved in that the method for a kind of stainless sheet steel and aluminium sheet large-area brazing, comprise the steps, stainless sheet steel and the rolling stainless steel-aluminum composite plate that is combined into of aluminium strip of soldering will be needed, then with the aluminium side surface of this composite plate with need the aluminium sheet surface of soldering to clean oil removing, coat brazing flux, the centre is covered with the sial weld tabs, after folded the fastening, places the soldering furnace brazing.
Above-mentioned Thin Stainless Steel plate thickness is 0.2mm～2mm.
Above-mentioned aluminium sheet thickness is 0.1mm～5mm.
Above-mentioned compound aluminium strip preferred thickness is 0.08mm～2mm.
Above-mentioned sial weld tabs can be substituted by the sial solder.
Above-mentioned sial weld tabs is substituted by the sial solder layer that is attached on the aluminium sheet, and the operation that can save like this brushing solder or place weld tabs is time saving and energy saving.
After adopting such scheme, adopt first maturation process by rolling they to be combined mutually securely on whole contact surface stainless sheet steel and aluminium strip, and both bond strengths are better; Again stainless steel-aluminum composite plate and aluminium sheet are carried out solder bonding metal of the same race, the soldering processes difficulty is low, and bond strength is high; Stainless sheet steel and aluminium sheet large-area brazing have finally been realized.
(3) technique effect
The present invention proposes the method for a kind of stainless sheet steel and aluminium sheet large-area brazing, realizes stainless sheet steel and aluminium sheet large-area brazing, and both bond strengths are better, and technique is simple, and technical scheme easily realizes.
Four, the specific embodiment
Embodiments of the invention 1: the thickness that will need soldering is 304 stainless steel strips of 0.3mm and the rolling stainless steel-aluminum composite belt that is combined into of aluminium strip that thickness is 0.15mm, then with the aluminium side surface of this composite band with to need the thickness of soldering be that the trade mark of 1mm is that oil removing is cleaned on 1100 aluminium alloy sheet surfaces, coat brazing flux, the centre is covered with ER4047 sial weld tabs, after folded the fastening, place the soldering furnace brazing.
Embodiments of the invention 2: the thickness that will need soldering is 304 stainless steel strips of 0.3mm and the rolling stainless steel-aluminum composite belt that is combined into of aluminium strip that thickness is 0.15mm, then with the aluminium side surface of this composite band with to need the pipe thickness of soldering be that 0.3mm, width are that 40mm, the trade mark are that oil removing is cleaned on 1100 porous Al alloy flat tube surface, coat brazing flux, the centre is covered with ER4047 sial weld tabs, after folded the fastening, place the soldering furnace brazing.
Embodiments of the invention 3: the thickness that will need soldering is the stainless steel strip of 0.3mm and the rolling stainless steel-aluminium-ER4047 sial solder layer composite band that is combined into of the compound aluminium strip with ER4047 sial solder layer that thickness is 0.16mm, then with the scolder side surface of this composite band with to need the pipe thickness of soldering be that 0.3mm, width are that 40mm, the trade mark are that oil removing is cleaned on 1100 porous Al alloy flat tube surface, coat brazing flux, after folded the fastening, place the soldering furnace brazing.
It should be noted last that, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although with reference to preferred embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (6)
1. the method for a stainless sheet steel and aluminium sheet large-area brazing, it is characterized in that: comprise the steps, stainless sheet steel and the rolling stainless steel-aluminum composite plate that is combined into of aluminium strip of soldering will be needed, then with the aluminium side surface of this composite plate with need the aluminium sheet surface of soldering to clean oil removing, coat brazing flux, the centre is covered with the sial weld tabs, after folded the fastening, places the soldering furnace brazing.
2. the method for a kind of stainless sheet steel according to claim 1 and aluminium sheet large-area brazing, it is characterized in that: above-mentioned Thin Stainless Steel plate thickness is 0.2mm～2mm.
3. the method for a kind of stainless sheet steel according to claim 1 and aluminium sheet large-area brazing, it is characterized in that: above-mentioned aluminium sheet thickness is 0.1mm～5mm.
4. the method for a kind of stainless sheet steel according to claim 1 and aluminium sheet large-area brazing, it is characterized in that: above-mentioned clad aluminum tape thickness is 0.08mm～2mm.
5. the method for a kind of stainless sheet steel according to claim 1 and aluminium sheet large-area brazing is characterized in that: above-mentioned sial weld tabs is substituted by the sial solder.
6. the method for a kind of stainless sheet steel according to claim 1 and aluminium sheet large-area brazing is characterized in that: above-mentioned sial weld tabs is substituted by the sial solder layer that is attached on the aluminium sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310025343 CN103056469A (en) | 2013-01-24 | 2013-01-24 | Method for large-area brazing of stainless steel sheet and aluminum sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310025343 CN103056469A (en) | 2013-01-24 | 2013-01-24 | Method for large-area brazing of stainless steel sheet and aluminum sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103056469A true CN103056469A (en) | 2013-04-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201310025343 Pending CN103056469A (en) | 2013-01-24 | 2013-01-24 | Method for large-area brazing of stainless steel sheet and aluminum sheet |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104289784A (en) * | 2013-07-18 | 2015-01-21 | 首都航天机械公司 | Surface tin coating method applicable to stainless steel pipe fitting |
| CN104400169A (en) * | 2014-09-28 | 2015-03-11 | 中国电子科技集团公司第三十八研究所 | Vacuum brazing method for aluminum alloy solderless piece |
| CN104651898A (en) * | 2015-02-09 | 2015-05-27 | 大连理工大学 | Preparation method of intermetallic compound membrane |
| CN109413983A (en) * | 2018-12-20 | 2019-03-01 | 厦门众仟实业有限公司 | A kind of aluminium honeycomb core soldering electromagnetic shielding waveguide window and its production technology |
| CN109848658A (en) * | 2019-03-08 | 2019-06-07 | 任耀文 | A kind of production method of large area titanium copper thin plate |
-
2013
- 2013-01-24 CN CN 201310025343 patent/CN103056469A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104289784A (en) * | 2013-07-18 | 2015-01-21 | 首都航天机械公司 | Surface tin coating method applicable to stainless steel pipe fitting |
| CN104289784B (en) * | 2013-07-18 | 2016-01-27 | 首都航天机械公司 | A kind of surperficial tining method being applicable to stainless steel pipe |
| CN104400169A (en) * | 2014-09-28 | 2015-03-11 | 中国电子科技集团公司第三十八研究所 | Vacuum brazing method for aluminum alloy solderless piece |
| CN104651898A (en) * | 2015-02-09 | 2015-05-27 | 大连理工大学 | Preparation method of intermetallic compound membrane |
| CN109413983A (en) * | 2018-12-20 | 2019-03-01 | 厦门众仟实业有限公司 | A kind of aluminium honeycomb core soldering electromagnetic shielding waveguide window and its production technology |
| CN109848658A (en) * | 2019-03-08 | 2019-06-07 | 任耀文 | A kind of production method of large area titanium copper thin plate |
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Application publication date: 20130424 |