CN104526280A - Preparation method of aluminum alloy brazing sheet - Google Patents
Preparation method of aluminum alloy brazing sheet Download PDFInfo
- Publication number
- CN104526280A CN104526280A CN201410775392.9A CN201410775392A CN104526280A CN 104526280 A CN104526280 A CN 104526280A CN 201410775392 A CN201410775392 A CN 201410775392A CN 104526280 A CN104526280 A CN 104526280A
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- Prior art keywords
- ingot casting
- hot rolling
- milling
- sheet
- preparation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/38—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B47/00—Auxiliary arrangements, devices or methods in connection with rolling of multi-layer sheets of metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B47/00—Auxiliary arrangements, devices or methods in connection with rolling of multi-layer sheets of metal
- B21B47/02—Auxiliary arrangements, devices or methods in connection with rolling of multi-layer sheets of metal for folding sheets before rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/38—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
- B21B2001/383—Cladded or coated products
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/38—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
- B21B2001/386—Plates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2203/00—Auxiliary arrangements, devices or methods in combination with rolling mills or rolling methods
- B21B2203/12—Covers or shieldings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
The invention provides a preparation method of an aluminum alloy brazing sheet. The preparation method comprises the following steps: milling each surface of a base body casting ingot for 15mm-20mm to obtain a milled casting ingot; milling an aluminum covered sheet for 15mm-20mm to obtain a milled aluminum covered sheet; and compounding the milled aluminum covered sheet and the milled casting ingot, and carrying out hot rolling to obtain the aluminum alloy brazing sheet. The surface milling amounts of the casting ingot and the aluminum covered sheet are controlled so that the aluminum alloy brazing sheet has few air bubbles and the yield of the product is improved.
Description
Technical field
The present invention relates to alloy field, particularly relate to a kind of preparation method of aluminium alloy brazing sheet.
Background technology
Aluminium alloy brazing sheet is mainly used in oxygen generating plant and automobile radiators, it is lightweight because having, corrosion-resistant, the advantage such as braze ability good, dependable performance and obtain extensive use, and develop rapidly and empty subsidiary factory process modification along with Domestic Automotive Industry, have the index such as uniformity, size, performance of aluminium alloy brazing material coating thickness and upgraded higher requirement.
Production mainly method hot rolling and the cold rolling compound of aluminium alloy brazing sheet, but cold rolling mode can not produce the composite plate of large gauge, and when each layer metal toughness differs greatly, seam is more difficult, so aluminium alloy brazing sheet often adopts the method compound of hot rolling; At present, many units are studied method hot rolling mode both at home and abroad, but, at present in actual production, because brazing sheet exists air bubble problem, make yield rate lower.
Summary of the invention
In view of this, technical problem to be solved by this invention is the preparation method providing a kind of aluminium alloy brazing sheet, and the aluminium alloy brazing sheet bubble that the preparation method of aluminium alloy brazing sheet provided by the invention prepares obviously reduces, and yield rate improves.
The invention provides a kind of preparation method of aluminium alloy brazing sheet, comprising:
1) every for matrix ingot casting facing cut is cut 15 ~ 20mm, obtain the ingot casting after milling;
By alclad sheet ingot casting milling 15 ~ 20mm, hot rolling, obtains the alclad sheet after hot rolling;
2) by the alclad sheet after milling and the ingot casting compound after milling, hot rolling, obtains aluminium alloy brazing sheet.
Preferably, the hydrogen content of described matrix ingot casting is 0.13 ~ 0.20mL/100g.
Preferably, the milling amount that the every facing cut of described matrix ingot casting is cut is 15 ~ 18mm.
Preferably, the milling amount of described alclad sheet ingot casting milling is 15 ~ 18mm.
Preferably, described step 2) the temperature of hot rolling be 450 ~ 500 DEG C.
Preferably, described step 2) time of hot rolling be 10 ~ 15 hours.
Preferably, also comprise before step 2 after described step 1: the matrix ingot casting after milling is carried out hot rolling, obtains the ingot casting after hot rolling.
Preferably, the temperature of described hot rolling is 450 ~ 500 DEG C.
Preferably, the time of described hot rolling is 6 ~ 10 hours.
Compared with prior art, the invention provides a kind of preparation method of aluminium alloy brazing sheet, comprise, every for matrix ingot casting facing cut is cut 15 ~ 20mm, obtains the ingot casting after milling; Alclad sheet ingot casting milling 15 ~ 20mm, then hot rolling, obtain the alclad sheet after hot rolling; Then by the alclad sheet after hot rolling and the ingot casting compound after milling, hot rolling, obtain aluminium alloy brazing sheet, wherein, by controlling the milling face amount of ingot casting and alclad sheet, make the aluminium alloy brazing sheet bubble that obtains few, improve the yield rate of product, experimental result shows, prepares aluminium alloy brazing sheet by method of the present invention, yield rate is up to 66.51%, and bubble percent defective is lower than 1%.
Detailed description of the invention
The invention provides a kind of preparation method of aluminium alloy brazing sheet, comprising:
1) every for matrix ingot casting facing cut is cut 15 ~ 20mm, obtain the ingot casting after milling;
By alclad sheet ingot casting milling 15 ~ 20mm, hot rolling, obtains the alclad sheet after hot rolling;
2) by the alclad sheet after hot rolling and the ingot casting compound after milling, hot rolling, obtains aluminium alloy brazing sheet.
According to the present invention, first every for matrix ingot casting facing cut is cut 15 ~ 20mm, obtain the ingot casting after milling; By alclad sheet ingot casting milling 15 ~ 20mm, then hot rolling, obtain the alclad sheet after milling; Wherein, the milling amount that the every facing cut of described matrix ingot casting is cut is preferably 15 ~ 18mm, is more preferably 15 ~ 16mm; The milling amount of described alclad sheet milling is preferably 15 ~ 18mm, is more preferably 15 ~ 16mm; The temperature of described alclad sheet slab hot-rolling is preferably 450 ~ 500 DEG C; The time of described hot rolling is preferably 10 ~ 15 hours, is more preferably 12 ~ 14 hours; The hydrogen content of described matrix ingot casting is preferably 0.13 ~ 0.20mL/100g, be more preferably 0.13 ~ 0.15mL/100g, the content of matrix ingot casting of the present invention has important impact to the air bubble content obtained in aluminium alloy brazing sheet, when matrix ingot casting hydrogen content is too high, the air bubble content of aluminium alloy brazing sheet can be had a strong impact on, and then affect yield rate, but when requiring that air bubble content is too low, greatly can improve the production requirement to matrix ingot casting, thus increase cost.
According to the present invention, by the alclad sheet after milling and the ingot casting compound after hot rolling, hot rolling, obtains aluminium alloy brazing sheet; The temperature of described hot rolling is preferably 450 ~ 500 DEG C; The time of described hot rolling is preferably 10 ~ 15 hours, is more preferably 12 ~ 14 hours.
In order to make the bubble of the aluminium alloy brazing sheet obtained less, the ingot casting after milling is preferably also carried out hot rolling by the present invention, obtains the ingot casting after hot rolling; The temperature of described hot rolling is preferably 450 ~ 500 DEG C; The time of described hot rolling is 6 ~ 10 hours; The present invention, by carrying out hot rolling to the ingot casting of milling, makes it first reach the thickness close with pre-paying product thickness, and then makes bubble in the aluminium alloy brazing sheet that obtains few, substantially increases the qualification rate of product.
In order to make brazing sheet by the time can be good at compound, improve qualification rate, the greasy dirt on alclad sheet surface, aluminium bits, dust and impurity were preferably also cleaned out by the present invention before alclad; And overlong time the shove charge time of the plate after alclad need be less than two days, because, can make to enter a large amount of dusts between the ingot casting after alclad sheet and hot rolling, aluminium considers to be worth doing and other foreign matter.
The invention provides a kind of preparation method of aluminium alloy brazing sheet, by controlling the milling face amount of ingot casting and alclad sheet ingot casting, and by the first hot rolling of the ingot casting after milling compound again, making the aluminium alloy brazing sheet bubble that obtains few, improve the yield rate of product.
Technical scheme below in conjunction with the embodiment of the present invention is clearly and completely described, and obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1
3 ~ May of southwestern Aluminum calendering factory in 2013, by the every facing cut of 3003 ingot casting of 400mm*1320*2500mm is cut 15mm, simultaneously by alclad sheet ingot casting milling 15mm, 500 DEG C of hot rollings are to 30mm, obtain the alclad sheet after hot rolling, then the ingot casting after milling is rolled down to 300mm in 500 DEG C, then by the alclad sheet after hot rolling and the ingot casting compound after rolling, 500 DEG C of rollings, obtain aluminium alloy brazing sheet.
Shown by testing result, in the aluminium alloy brazing sheet that 3 ~ May produces, bubble percent defective is 0.5%, and finished product rate is 66.51%.
Embodiment 2
6 ~ August of southwestern Aluminum calendering factory in 2013, by the every facing cut of 3003 ingot casting of 400mm*1320*2500mm is cut 17mm, simultaneously by alclad sheet ingot casting milling 17mm, 500 DEG C of hot rollings are to 40mm, obtain the alclad sheet after hot rolling, then the ingot casting after milling is rolled down to 250mm in 500 DEG C, then by the alclad sheet after hot rolling and the ingot casting compound after rolling, 500 DEG C of rollings, obtain aluminium alloy brazing sheet.
Shown by testing result, in the aluminium alloy brazing sheet that 6 ~ August produces, bubble percent defective is 0.6%, and finished product rate is 67.45%.
Embodiment 3
9 ~ December of southwestern Aluminum calendering factory in 2013, by the every facing cut of 3003 ingot casting of 400mm*1320*2500mm is cut 16mm, simultaneously by alclad sheet ingot casting milling 16mm, 500 DEG C of hot rollings are to 50mm, obtain the alclad sheet after hot rolling, then the ingot casting after milling is rolled down to 300mm in 500 DEG C, then by the alclad sheet after hot rolling and the ingot casting compound after rolling, 500 DEG C of rollings, obtain aluminium alloy brazing sheet.
Shown by testing result, in the aluminium alloy brazing sheet that 9 ~ December produces, bubble percent defective is 0.8%, and finished product rate is 67.05%.
The explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
Claims (9)
1. a preparation method for aluminium alloy brazing sheet, comprising:
1) every for matrix ingot casting facing cut is cut 15 ~ 20mm, obtain the ingot casting after milling;
By alclad sheet ingot casting milling 15 ~ 20mm, hot rolling, obtains the alclad sheet ingot casting after hot rolling;
2) by the alclad sheet after hot rolling and the ingot casting compound after milling, hot rolling, obtains aluminium alloy brazing sheet.
2. preparation method according to claim 1, is characterized in that, the hydrogen content of described matrix ingot casting is 0.13 ~ 0.20mL/100g.
3. preparation method according to claim 1, is characterized in that, the milling amount that the every facing cut of described matrix ingot casting is cut is 15 ~ 18mm.
4. preparation method according to claim 1, is characterized in that, the milling amount of described alclad sheet ingot casting milling is 15 ~ 18mm.
5. preparation method according to claim 1, is characterized in that, described step 2) the temperature of hot rolling be 450 ~ 500 DEG C.
6. preparation method according to claim 1, is characterized in that, described step 2) time of hot rolling be 10 ~ 15 hours.
7. preparation method according to claim 1, is characterized in that, also comprises: the matrix ingot casting after milling is carried out hot rolling, obtains the ingot casting after hot rolling after described step 1 before step 2.
8. preparation method according to claim 7, is characterized in that, the temperature of described hot rolling is 450 ~ 500 DEG C.
9. preparation method according to claim 7, is characterized in that, the time of described hot rolling is 6 ~ 10 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410775392.9A CN104526280A (en) | 2014-12-15 | 2014-12-15 | Preparation method of aluminum alloy brazing sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410775392.9A CN104526280A (en) | 2014-12-15 | 2014-12-15 | Preparation method of aluminum alloy brazing sheet |
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| Publication Number | Publication Date |
|---|---|
| CN104526280A true CN104526280A (en) | 2015-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410775392.9A Pending CN104526280A (en) | 2014-12-15 | 2014-12-15 | Preparation method of aluminum alloy brazing sheet |
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| CN (1) | CN104526280A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112045371A (en) * | 2020-09-07 | 2020-12-08 | 西南铝业（集团）有限责任公司 | Production process for improving coating uniformity of aluminum-coated product |
Citations (7)
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|---|---|---|---|---|
| CN101069941A (en) * | 2007-06-13 | 2007-11-14 | 潍坊三源铝业有限公司 | Method for preparing aluminium alloy composite material for brazing type heat transmission |
| CN101605916A (en) * | 2007-03-30 | 2009-12-16 | 株式会社神户制钢所 | The manufacture method of aluminium alloy thick plate and aluminium alloy thick plate |
| CN102205676A (en) * | 2010-03-31 | 2011-10-05 | 株式会社神户制钢所 | Aluminum alloy brazing sheet and heat exchanger |
| CN103290279A (en) * | 2012-02-27 | 2013-09-11 | 萨帕铝热传输(上海)有限公司 | Aluminium alloy fin material for brazing and manufacturing method of same |
| CN103302921A (en) * | 2012-03-16 | 2013-09-18 | 株式会社神户制钢所 | Aluminum alloy brazing sheet for heat exchanger |
| US8574723B2 (en) * | 2008-04-18 | 2013-11-05 | Sapa Heat Transfer Ab | Sandwich material for brazing with high strength at high temperature |
| CN103752612A (en) * | 2014-01-26 | 2014-04-30 | 美铝（昆山）铝业有限公司 | Production method for five-layer aluminum alloy composite board strip blanks |
-
2014
- 2014-12-15 CN CN201410775392.9A patent/CN104526280A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101605916A (en) * | 2007-03-30 | 2009-12-16 | 株式会社神户制钢所 | The manufacture method of aluminium alloy thick plate and aluminium alloy thick plate |
| CN101069941A (en) * | 2007-06-13 | 2007-11-14 | 潍坊三源铝业有限公司 | Method for preparing aluminium alloy composite material for brazing type heat transmission |
| US8574723B2 (en) * | 2008-04-18 | 2013-11-05 | Sapa Heat Transfer Ab | Sandwich material for brazing with high strength at high temperature |
| CN102205676A (en) * | 2010-03-31 | 2011-10-05 | 株式会社神户制钢所 | Aluminum alloy brazing sheet and heat exchanger |
| CN103290279A (en) * | 2012-02-27 | 2013-09-11 | 萨帕铝热传输(上海)有限公司 | Aluminium alloy fin material for brazing and manufacturing method of same |
| CN103302921A (en) * | 2012-03-16 | 2013-09-18 | 株式会社神户制钢所 | Aluminum alloy brazing sheet for heat exchanger |
| CN103752612A (en) * | 2014-01-26 | 2014-04-30 | 美铝（昆山）铝业有限公司 | Production method for five-layer aluminum alloy composite board strip blanks |
Non-Patent Citations (1)
| Title |
|---|
| 吴树森等: "《铝、镁合金熔炼与成形加工技术》", 31 March 2012 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112045371A (en) * | 2020-09-07 | 2020-12-08 | 西南铝业（集团）有限责任公司 | Production process for improving coating uniformity of aluminum-coated product |
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Application publication date: 20150422 |
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