CN102285163A - Compound brazing aluminum foil material for automobile heat radiator and manufacturing method thereof - Google Patents
Compound brazing aluminum foil material for automobile heat radiator and manufacturing method thereof Download PDFInfo
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- CN102285163A CN102285163A CN2011101531057A CN201110153105A CN102285163A CN 102285163 A CN102285163 A CN 102285163A CN 2011101531057 A CN2011101531057 A CN 2011101531057A CN 201110153105 A CN201110153105 A CN 201110153105A CN 102285163 A CN102285163 A CN 102285163A
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Abstract
The invention relates to a compound brazing aluminum foil material for an automobile heat radiator and a manufacturing method thereof. A core layer of the compound brazing aluminum foil material is composed of 0.5%-0.8% of silicon, 0.20%-0.30% of iron, 0.30%-0.40% of copper, 1.0%-1.8% of manganese, 0.005%-0.035% of chromium, 0.12%-0.20% of titanium, and the balance of aluminum. The manufacturing method is characterized by comprising the following steps: after melting a re-melting industrial pure aluminum ingot (Al99.70A), adding a chalybeate, a copper agent, a manganese agent, a chromium agent and a titanium agent according to the proportion; heating the mixture to 740-760 DEG C; stirring the mixture for uniformly distributing the components; standing the mixture after deslagging; casting the mixture at 720-740 DEG C; moulding the mixture into an ingot blank; sawing and milling the ingot blank; after performing surface treatment on the core layer, respectively coating a layer of aluminum silicon brazing materials (AA4343 or AA4045 alloy) on both of the upper and the lower sides of the core layer; after fixing the core layer, heating the core layer to 520-540 DEG C; after preserving the heat for 10 hours, performing a hot-rolling process to acquire a hot rolled plate coil; and performing a cold-rolling process on the hot rolled plate coil.
Description
Technical field
The present invention relates to a kind of method that is used for the Al alloy composite of radiator and produces this material, the method that particularly relates to a kind of automobile radiator composite brazing aluminum foil material and produce this material.
Background technology
The core material radiating fin of China's automobile radiators is mainly used the composite brazing aluminium foil at present, changes composite and is made up of the aluminium alloy that the two sides is covered with aluminium silicon-type brazing material.Automobile radiators aluminium foil working environment is more abominable, requires its right good anti-corrosion, slump resistance.Because for satisfying the demand of automobile lightweight, parts miniaturization, reduction material cost, the aluminum foil thickness of described material was reducing in the last few years, the thickness on the existing market generally can only be accomplished 0.08mm, then can not satisfy slump resistance less than 0.08mm.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, the method that a kind of automobile radiator composite brazing aluminum foil material is provided and has produced this material, this material can be accomplished 0.07mm, has higher intensity simultaneously, good slump resistance and exchange capability of heat can have good sink-resistance performance when high temperature brazing.
A kind of composite brazing material that is used for automobile radiators, its architectural feature is a sandwich style, itself has three layers, top and bottom are AA4343 or AA4045 alloy, general thickness up and down respectively accounts for 10% of gross thickness, the intermediate layer is an aluminium alloy core material sandwich layer, its thickness accounts for 80% of gross thickness, levels plays the welding effect, and the assurance aluminium strip is in the same place with aluminum pipe brazing, and intermediate layer (sandwich layer) plays thermolysis, the requirement aluminium strip is indeformable, thermal conductivity is good, and is corrosion-resistant again, so core material is had strict requirement.
The technical solution used in the present invention is: a kind of automobile radiator composite brazing aluminum foil material, its sandwich layer is made up of silicon, iron, copper, manganese, chromium, titanium and aluminium, wherein the mass ratio of each composition is: silicon 0.5～0.8%, iron 0.20～0.30%, copper 0.30～0.40%, manganese 1.0～1.8%, chromium 0.005～0.035%, titanium 0.12～0.20%, all the other are aluminium.
Manufacture method of the present invention is characterized in that: a kind of aluminium alloy core material sandwich layer is provided, the manufacture method of core material sandwich layer is: remelting is put into commercial-purity aluminium ingot (AL99.70A) be warmed up to 740 ℃～760 ℃ fusings in the melting furnace, stir, add chalybeate after the slagging-off according to the above ratio, the copper agent, the manganese agent, chromium agent and titanium agent, be warmed up to 740 ℃～760 ℃ again, stirring makes composition even, taken off that aluminium liquid surface slag is laggard goes into to leave standstill stove, further degasification in leaving standstill stove again, after the slagging-off, temperature of aluminum liquid is cast in the time of 720 ℃～740 ℃, be cast into ingot blank then, ingot blank jagsaw head, the face that mills forms core body, core body is after surface treatment, respectively cover one deck AA4343 or AA 4045 materials (abbreviation composite plate) up and down, both sides composite plate thickness respectively accounts for 10% of gross thickness, form sandwich style, composite plate and core body are after inferior arc-welding is fixing up and down, be heated to 520 ℃～540 ℃, keep hot rolling after 10 hours, obtain hot-rolled sheet coil, hot-rolled sheet coil is carried out cold rolling processing, be machined to predetermined thickness according to cold working rate, make this thickness to the cold working rate of finished product thickness be controlled at 25%～60%, carry out intermediate annealing at this thickness, the intermediate annealing temperature is 410 ℃～430 ℃, is incubated 6～7 hours, continue to be rolled to finished product thickness then, after shearing, make finished product.Automobile radiator composite brazing boss material provided by the invention can have been saved material with the thinner material corrosion resistance that obtained identical strength-enhanced, satisfies the needs of lightweight material.
Advantage of the present invention is high silicon or Gao Meng, can significantly improve the soldering strength of aluminium foil, and indeformable in brazing process, high silicon can improve the aluminium foil thermal conductivity again; Titanium energy crystal grain thinning overcomes the coarse-grain that high silicon Gao Meng causes, ingot casting is not easy to crack in casting, and titanium can improve the corrosion resistance of aluminium wave belt again.The effect of chromium improves the hear resistance of aluminium foil, and in brazing process, wave belt is difficult for burning.
The specific embodiment
Automobile radiator composite brazing material, its architectural feature are sandwich style, and itself has three layers, top and bottom are AA4343 or AA4045 alloy, general thickness up and down respectively accounts for 10% of gross thickness, and the intermediate layer is aluminium alloy core material (sandwich layer), and its thickness accounts for 80% of gross thickness.Aluminium alloy compound brazing material sandwich layer is made up of silicon, iron, copper, manganese, chromium, titanium and aluminium, and wherein the mass ratio of each composition is: silicon 0.5～0.8%, iron 0.20～0.30%, copper 0.30～0.40%, manganese 1.0～1.8%, chromium 0.005～0.035%, titanium 0.12～0.20%, all the other are aluminium.
Manufacture method of the present invention is characterized in that: remelting put into commercial-purity aluminium ingot (AL99.70A) be warmed up to 740 ℃～760 ℃ fusings in the melting furnace, stir, add chalybeate after the slagging-off according to the above ratio, the copper agent, the manganese agent, chromium agent and titanium agent, be warmed up to 740 ℃～760 ℃ again, stirring makes composition even, taken off that aluminium liquid surface slag is laggard goes into to leave standstill stove, again after further degasification in leaving standstill stove, the slagging-off, temperature of aluminum liquid is cast in the time of 720 ℃～740 ℃, is cast into ingot blank then, and ingot blank jagsaw head, the face that mills form core body.Core body is after surface treatment, respectively cover one deck AA4343 or AA 4045 materials (abbreviation composite plate) up and down, both sides composite plate thickness respectively accounts for 10% of gross thickness, be heated to 520 ℃～540 ℃ after fixing, keep hot rolling after 10 hours, obtain hot-rolled sheet coil, hot-rolled sheet coil is carried out cold rolling processing, be machined to predetermined thickness according to cold working rate, make this thickness to the cold working rate of finished product thickness be controlled at 25%～60%, carry out intermediate annealing at this thickness, the intermediate annealing temperature is 410 ℃～430 ℃, be incubated 6～7 hours, continue to be rolled to finished product thickness then, after shearing, make finished product.Automobile radiator composite brazing boss material provided by the invention can have been saved material with the thinner material corrosion resistance that obtained identical strength-enhanced, satisfies the needs of lightweight material.
Embodiment 1:
The chemical composition mass ratio of core material is: silicon 0.68%, and iron 0.20%, copper 0.30%, manganese 1.15%, chromium 0.010%, all the other are aluminium for titanium 0.15%.Remelting put into commercial-purity aluminium ingot (AL99.70A) be warmed up to 740 ℃～760 ℃ fusings in the melting furnace, stir, add chalybeate after the slagging-off according to the above ratio, the copper agent, the manganese agent, chromium agent and titanium agent through stir, refining, adjust that composition is laggard goes into to leave standstill stove, to be degassed, the slagging-off after, cast at 720 ℃～740 ℃, be cast into the hot rolling ingot blank then, ingot blank jagsaw head, the face that mills form core body.Core body is through after the surface treatment, respectively covering one deck AA4343 composite plate up and down, composite plate thickness respectively accounts for 10% of gross thickness, be heated to 520 ℃～540 ℃, keep hot rolling after 10 hours, obtain hot rolling slab, hot rolling slab is carried out cold rolling processing, be machined to predetermined thickness according to cold working rate, make this thickness to the cold working rate of finished product thickness be controlled at 25%～60%, carry out intermediate annealing at this thickness, the intermediate annealing temperature is 410 ℃～430 ℃, be incubated 6～7 hours, continue to be rolled to finished product thickness then, after shearing, make finished product.
Embodiment 2:
The chemical composition mass ratio of core material is: silicon 0.68%, and iron 0.25%, copper 0.35%, manganese 1.25%, chromium 0.020%, titanium 0.18%, all the other are aluminium.Remelting put into commercial-purity aluminium ingot (AL99.70A) be warmed up to 740 ℃～760 ℃ fusings in the melting furnace, stir, add chalybeate after the slagging-off according to the above ratio, the copper agent, the manganese agent, chromium agent and titanium agent through stir, refining, adjust that composition is laggard goes into to leave standstill stove, to be degassed, the slagging-off after, cast at 720 ℃～740 ℃, be cast into the hot rolling ingot blank then, ingot blank jagsaw head, the face that mills form core body.Core body is through after the surface treatment, respectively covering one deck AA4343 composite plate up and down, composite plate thickness respectively accounts for 10% of gross thickness, be heated to 520 ℃～540 ℃, keep hot rolling after 10 hours, obtain hot rolling slab, hot rolling slab is carried out cold rolling processing, be machined to predetermined thickness according to cold working rate, make this thickness to the cold rate that adds of finished product thickness be controlled at 25%～60%, carry out intermediate annealing at this thickness, the intermediate annealing temperature is 410 ℃～430 ℃, be incubated 6～7 hours, continue to be rolled to finished product thickness then, after shearing, make finished product.
Embodiment 3:
The chemical composition mass ratio of core material is: silicon 0.75%, and iron 0.25%, copper 0.35%, manganese 1.35%, chromium 0.028%, titanium 0.20%, all the other are aluminium.Remelting put into commercial-purity aluminium ingot (AL99.70A) be warmed up to 740 ℃～760 ℃ fusings in the melting furnace, stir, add chalybeate after the slagging-off according to the above ratio, the copper agent, the manganese agent, chromium agent and titanium agent through stir, refining, adjust that composition is laggard goes into to leave standstill stove, to be degassed, the slagging-off after, cast at 720 ℃～740 ℃, be cast into the hot rolling ingot blank then, ingot blank jagsaw head, the face that mills form core body.Core body is through after the surface treatment, respectively covering one deck AA4343 composite plate up and down, composite plate thickness respectively accounts for 10% of gross thickness, be heated to 520 ℃～540 ℃, keep hot rolling after 10 hours, obtain hot rolling slab, hot rolling slab is carried out cold rolling processing, be machined to predetermined thickness according to cold working rate, make this thickness to the cold working rate of finished product thickness be controlled at 25%～60%, carry out intermediate annealing at this thickness, the intermediate annealing temperature is 410 ℃～430 ℃, be incubated 6～7 hours, continue to be rolled to finished product thickness then, after shearing, make finished product.
Claims (2)
1. automobile radiator composite brazing aluminum foil material, its sandwich layer is made up of silicon, iron, copper, manganese, chromium, titanium and aluminium, wherein the mass ratio of each composition is: silicon 0.5～0.8%, iron 0.20～0.30%, copper 0.30～0.40%, manganese 1.0～1.8%, chromium 0.005～0.035%, titanium 0.12～0.20%, all the other are aluminium.
2. the manufacture method of a kind of automobile radiator composite brazing aluminum foil material according to claim 1, it is characterized in that: a kind of aluminium alloy core material sandwich layer is provided, the manufacture method of core material sandwich layer is: remelting is put into commercial-purity aluminium ingot (AL99.70A) be warmed up to 740 ℃～760 ℃ fusings in the melting furnace, stir, add chalybeate after the slagging-off according to the above ratio, the copper agent, the manganese agent, chromium agent and titanium agent, be warmed up to 740 ℃～760 ℃ again, stirring makes composition even, taken off that aluminium liquid surface slag is laggard goes into to leave standstill stove, further degasification in leaving standstill stove again, after the slagging-off, temperature of aluminum liquid is cast in the time of 720 ℃～740 ℃, be cast into ingot blank then, ingot blank jagsaw head, the face that mills forms core body, core body is after surface treatment, respectively cover one deck AA4343 or AA4045 material (abbreviation composite plate) up and down, both sides composite plate thickness respectively accounts for 10% of gross thickness, form sandwich style, composite plate and core body are after inferior arc-welding is fixing up and down, be heated to 520 ℃～540 ℃, keep hot rolling after 10 hours, obtain hot-rolled sheet coil, hot-rolled sheet coil is carried out cold rolling processing, be machined to predetermined thickness according to cold working rate, make this thickness to the cold working rate of finished product thickness be controlled at 25%～60%, carry out intermediate annealing at this thickness, the intermediate annealing temperature is 410 ℃～430 ℃, be incubated 6～7 hours, continue to be rolled to finished product thickness then, after shearing, make finished product.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011101531057A CN102285163A (en) | 2011-06-09 | 2011-06-09 | Compound brazing aluminum foil material for automobile heat radiator and manufacturing method thereof |
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| CN2011101531057A CN102285163A (en) | 2011-06-09 | 2011-06-09 | Compound brazing aluminum foil material for automobile heat radiator and manufacturing method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104384871A (en) * | 2014-12-15 | 2015-03-04 | 西南铝业（集团）有限责任公司 | Process for producing aluminum alloy brazing sheets |
| CN109988946A (en) * | 2017-12-29 | 2019-07-09 | 格朗吉斯铝业（上海）有限公司 | A kind of vacuum brazing fin material and preparation method thereof |
-
2011
- 2011-06-09 CN CN2011101531057A patent/CN102285163A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104384871A (en) * | 2014-12-15 | 2015-03-04 | 西南铝业（集团）有限责任公司 | Process for producing aluminum alloy brazing sheets |
| CN104384871B (en) * | 2014-12-15 | 2016-08-24 | 西南铝业（集团）有限责任公司 | A kind of production technology of aluminium alloy brazing sheet |
| CN109988946A (en) * | 2017-12-29 | 2019-07-09 | 格朗吉斯铝业（上海）有限公司 | A kind of vacuum brazing fin material and preparation method thereof |
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Application publication date: 20111221 |