CN109735745A - A kind of preparation method for losing automobile evaporator tube sheet material for manufacturing high-strength corrosion-resistant - Google Patents
A kind of preparation method for losing automobile evaporator tube sheet material for manufacturing high-strength corrosion-resistant Download PDFInfo
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- CN109735745A CN109735745A CN201910061283.3A CN201910061283A CN109735745A CN 109735745 A CN109735745 A CN 109735745A CN 201910061283 A CN201910061283 A CN 201910061283A CN 109735745 A CN109735745 A CN 109735745A
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Abstract
A kind of for manufacturing the preparation method of high-strength corrosion-resistant erosion automobile evaporator tube sheet material, specifically comprise the following steps, step 1: raw material is selected, and the multi-layer composite aluminium alloy board band that selection hot rolling technology is combined is as tube sheet material；Step 2: multi-layer composite aluminium alloy board band is struck out assembly evaporator pipe sheet lamination by stamping technology using impact molding machine by tube sheet material forming；Step 3: using soldering oven by step 2 tube sheet lamination and fin be brazed, complete expansion core body component manufacture；Wherein in step 1, the production method of the aluminum alloy sheets and strips specifically comprises the following steps: founding, sawing, soaking, milling face, compound, heating, hot roughing, hot finishing, cold rolling, finished products and accurate cutting, the preparation method can effectively solve the problem that existing aluminium-alloy pipe plate material requirement pricker deposited strength improves, post-braze corrosion corrosion can be more preferable, it requires material to possess good punching performance simultaneously, avoids thinning phenomenon in punching course.
Description
Technical field
The present invention relates to aluminium alloy and for the materials processing technology field of Al-alloy heat exchanger, it is specifically related to one kind
For manufacturing the preparation method of high-strength corrosion-resistant erosion automobile evaporator tube sheet material.
Background technique
As Chinese Automobile Industry ' is grown rapidly, domestic automobile volume of production and marketing breaks through 30,000,000 amounts, and aluminium alloy is as automobile
The main material of aluminum alloy evaporator tube sheet recommends automotive light weight technology in fierce market competition, further decreases production
Manufacturing cost, is badly in need of developing that a intensity is higher, evaporator aluminum alloy materials of longer life expectancy.In aluminum alloy evaporator,
Aluminium alloy compound tube sheet material constitutes the circulation duct of cooling medium by punching press and soldering.Conventional evaporator tube sheet material core material
It is common AA3003 aluminium alloy, which is for moderate intensity, good corrosion resistance and punching performance, still
In use with auto industry continuous development, constantly improve and market competition the more aggravation of quality, certainly to material
More stringent requirements are proposed for the technical indicators such as body intensity and corrosion resistance, and traditional AA3003 aluminium alloy can no longer meet newly
Technical requirements.
In order to improve pressure resistance and the corrosion resistance of evaporator, pricker deposited strength is required to mention as aluminium-alloy pipe plate material
Height, post-braze corrosion corrosion more preferably, while can require material to possess good punching performance, avoid being thinned in punching course existing
As corrosion of the skin material to core material in reduction brazing process as far as possible.
Therefore solve the problems, such as that this kind is particularly important, this technology is the material technology in manufacture automobile evaporator
It pays attention to and solves the problems, such as during design and use.
Summary of the invention
It is 0.4- the purpose of the present invention is to provide a kind of final thickness in view of the various problems of the above-mentioned prior art
The automobile evaporator of 0.5mm aluminium-alloy pipe plate material and its manufacturing method can effectively solve the problem that existing aluminium-alloy pipe plate material
Post-braze corrosion erosion and the inadequate problem of intensity.
The technical solution of the invention is as follows: a kind of for manufacturing the material of high-strength corrosion-resistant erosion automobile evaporator tube sheet, institute
Stating material includes core material and skin material, and two layers of skin material passes through compound and etc. the two sides that the core material is arranged in, material thickness
In 0.4-0.5mm, the core material includes the chemical component (wt%) of following mass percent: Si: < 0.2%, Fe:0.1-0.3%,
Cu:0.25-0.5%, Mn:1.0-1.7%, Mg:0. < 0.05%, Zn: < 0.2%, Ti:0.1-0.2%, surplus are Al and inevitable
Impurity, the skin material include following mass percent chemical component (wt%): Si:6.8-8.2%, Fe: < 0.3%, Cu: <
0.3%, Mn: < 0.1%, Mg: < 0.05%, Zn: < 0.1%, Ti: < 0.05%, surplus is Al and inevitable impurity；The skin
Brazing layer accounts for the 8%-12% of material overall thickness in material.
A further improvement of the present invention is that: it is a kind of if above content is for manufacturing high-strength corrosion-resistant erosion automobile evaporator pipe
The material preparation method of plate, the specific steps are as follows:
Step 1: raw material selection, the multi-layer composite aluminium alloy board band that selection hot rolling technology is combined is as tube sheet material；
Step 2: tube sheet material forming passes through stamping technology for multi-layer composite aluminium alloy board band punching press using impact molding machine
At assembly evaporator pipe sheet lamination；
Step 3: using soldering oven by step 2 tube sheet lamination and fin be brazed, complete expansion core body component system
It makes.
A further improvement of the present invention is that: specific step is as follows for a kind of production method of aluminum alloy sheets and strips: founding,
Sawing, soaking, milling face, compound, heating, hot roughing, hot finishing, cold rolling, finished products and accurate cutting.
A further improvement of the present invention is that: melting is carried out to skin material, the smelting temperature is 680--740 DEG C, after casting
Skin material ingot casting will also be after sawing, milling face, heating and hot rolling, then cut the specification of needs.
A further improvement of the present invention is that: in the composite steps, by the core material ingot casting and the skin material ingot casting into
Row composite heating before heating, makes a call to a steel band for the head, middle and end of composite ingot that will heat are each.
A further improvement of the present invention is that: in the soak step, the core material ingot casting is heated to 580-630 DEG C, protects
8-12 hours warm, using the method that temperature control is cooling when cooling, ingot casting temperature is at 400-620 DEG C, and control control cooling time is in 10-
15h, then natural cooling out.
A further improvement of the present invention is that: in the hot roughing step, using hot roughing in 470--500 DEG C of cogging, three
The compound aluminium of layer passes through 15 or 16 passes, sotck thinkness 15--25mm, and intermediate base temperature is 380--420 DEG C, reuses
Hot finishing, by 3 passes to 5mm hot rolled coil, finishing temperature control is at 280--340 DEG C, natural cooling；The cold rolling step
In rapid, 5.0mm hot rolled coil is cold rolled to 0.44mm-0.5mm, in 300-400 DEG C of implementation finished products, the finished products step
In, the annealing process of finished products is 300-400 DEG C of annealed metal temperature, and soaking time 1-2h obtains the crystal grain of fine uniform
Tissue, crystallite dimension is in 15-30um.
A further improvement of the present invention is that: in the precision dicing process, using between high precision cutting tools and reasonable cutter
Gap cuts material, to reach excellent edge shearing quality, final finished width, mechanical property, recombination rate, cup are convex
After examining all qualifications, it is packed and stored.
A further improvement of the present invention is that: the specification of the core material ingot casting is 445*1346*540mm, the skin material casting
The specification 52*1310*5000mm of ingot.
Outstanding feature of the invention is:
(1) strict control, mass fraction 0.1%- have been carried out to Si, Fe, Cu, Mn, Ti ingredient in aluminum alloy materials in the present invention
0.2% titanium Ti element is added in aluminium alloy and forms Al3Ti compound plays the role of refining crystal grain and changes erosion profile, quality
Score 0.25%-0.5% copper Cu element, which is added in aluminium alloy, can be improved core material corrosion potential, improve material corrosion resistance,
And certain invigoration effect can be played, mass fraction 1.0%-1.7% manganese Mn element is added in aluminium alloy and improves material by solid solution
Expect intensity, a large amount of Al are precipitated by homogenization6Mn dispersoid particle reduces the recrystallization temperature of material and long to recrystal grain
Barrier effect is played greatly, guarantees to avoid the occurrence of coarse grain in finished products, Si, Fe of low content are conducive to improve the resistance to of material
Corrosion performance；
(2) present invention uses 470-500 DEG C of roughing cogging, and by 15 or 16 passes, sotck thinkness 15-25mm is intermediate
Base temperature is 380-420 DEG C, reuses hot finishing, and by 3 passes to 5mm hot rolled coil, this is to utilize proper temperature and change
Shape speed is sufficiently crushed come the uniform tiny precipitation for controlling the second phase compound and guarantee cast sturcture, is conducive to improve in alloy
Portion's tissue；
(3) blank of hot rolling production, finishing temperature control is at 280--340 DEG C, natural cooling, and hot rolling blank overall performance is steady
It is fixed, guarantee cold rolling after the rolling of target working modulus, the properties of product of final finished annealing are stablized, and mechanical property is resistant to before which welds
Tensile strength reaches 135-150Mpa, and yield strength is greater than 65Mpa, and tensile strength of mechanical property reaches 140-150Mpa after soldering,
Yield strength is greater than 60Mpa, is averagely higher by 10-20Mpa than traditional AA3003 core material.Use vapour made of the aluminum alloy plate materials band
Vehicle evaporator is able to satisfy the use of conventional ones equipment, and material pricker deposited strength is high, corrosion resistance and good.
Detailed description of the invention
Attached drawing 1 is end properties and grain structure figure.
Specific embodiment
In order to deepen the understanding of the present invention, the present invention is done below in conjunction with drawings and examples and is further retouched in detail
It states, the embodiment is only for explaining the present invention, does not constitute and limits to protection scope of the present invention.
The present embodiment provides a kind of for manufacturing the material of high-strength corrosion-resistant erosion automobile evaporator tube sheet, and the material includes core
Material and skin material, two layers skin material by compound and etc. the two sides that the core material is arranged in, material thickness in 0.4-0.5mm,
The core material includes the chemical component (wt%) of following mass percent: Si: < 0.2%, Fe:0.1-0.3%, Cu:0.25-0.5%,
Mn:1.0-1.7%, Mg:0. < 0.05%, Zn: < 0.2%, Ti:0.1-0.2%, surplus are Al and inevitable impurity, the skin
Material includes the chemical component (wt%) of following mass percent: Si:6.8-8.2%, Fe: < 0.3%, Cu: < 0.3%, Mn: < 0.1%,
Mg: < 0.05%, Zn: < 0.1%, Ti: < 0.05%, surplus is Al and inevitable impurity.
A kind of material preparation method that automobile evaporator tube sheet is lost for manufacturing high-strength corrosion-resistant as described in above content, tool
Steps are as follows for body:
Step 1: raw material selection, the multi-layer composite aluminium alloy board band that selection hot rolling technology is combined is as tube sheet material；
Step 2: tube sheet material forming passes through stamping technology for multi-layer composite aluminium alloy board band punching press using impact molding machine
At assembly evaporator pipe sheet lamination；
Step 3: using soldering oven by step 2 tube sheet lamination and fin be brazed, complete expansion core body component system
It makes.
The present embodiment specifically provides a kind of 4343/3003Mod/4343 aluminum alloy sheets and strips and its production method: specific packet
Include following steps: founding, sawing, soaking, milling face, compound, heating, hot roughing, hot finishing, cold rolling, finished products and accurate point
It cuts.
In the founding step, the mass percent of the chemical component of the core material 3003Mod ingot casting after founding are as follows: Si: <
0.2%, Fe:0.1-0.3%, Cu:0.25-0.5%, Mn:1.0-1.7%, Mg: < 0.05%, Zn: < 0.2%, Ti:0.1-0.2%, surplus
It is Al and inevitable impurity；Wherein smelting temperature be 700--750 DEG C, 700--730 DEG C of refining temperature, casting temperature
680--700 DEG C, casting speed 50--55mm/min, and coverture is used, later using the mixed gas of chlorine and argon gas to molten
Body is refined, and Al-Ti-B is added and carries out crystal grain refinement, while carrying out the online degasification of melt using depassing unit, using 30/
50ppi twin-stage ceramic filter plate is filtered, and semi-continuous casting is at slab ingot, then by ingot casting by soaking, sawing and milling face
Step.
In the founding step, the smelting temperature of skin material is 680--740 DEG C, and is removed the gred using online degasification, semicontinuous casting
Slab ingot is caused, the skin material ingot casting after casting will also be after sawing, milling face, heating and hot rolling to design thickness, then is cut into needs
Length specification, with core material carry out it is compound.
In the soak step, the core material ingot casting heating temperature sets 630 DEG C of furnace temperature, and soaking time 12h comes out of the stove, cooling
The cooling method of Shi Caiyong temperature control, at 400-620 DEG C, then control control cooling time comes out certainly ingot casting temperature in 10-15h
It is so cooling.
The milling face step is to carry out milling, milling amount 10mm using big face of the milling machine to ingot casting.
In the composite steps, 4343 skin materials, core material 3003Mod, 4343 skin materials are tied up together, by what will be heated
The head, middle and end of composite ingot are each to make a call to a steel band, and the core material ingot casting and the skin material ingot casting are carried out composite heating.
In the heating stepses, ingot casting heating temperature sets 540 DEG C of furnace temperature, and soaking time 10h comes out of the stove rolling.
In the hot roughing step, using hot roughing in 470--500 DEG C of cogging, three layers of compound aluminium pass through 15 or 16
Passes, sotck thinkness 24mm*1346, intermediate base temperature are 380--420 DEG C, hot finishing are reused, by 3 passes
To 5mm hot rolled coil, finishing temperature control is at 280--340 DEG C, natural cooling.
In the cold rolling step, it is cold-rolled to target thickness by 5 passages, 5.0mm hot rolled coil is cold rolled to 0.4mm-
0.5mm implements the finished products at 300-400 DEG C.
In the finished products step, the annealing process of finished products is 300-400 DEG C of annealed metal temperature, soaking time
1-2h, the final grain structure for obtaining fine uniform, crystallite dimension is in 15-30um.
In the precision dicing process, according to product demand specification, by obtained finished product using high-precision on thin slitting
Material is cut in cutter and reasonable cutter gap, obtains the rouleau for needing width, to reach excellent edge shearing matter
It measures, after the convex inspection of mechanical property, recombination rate, cup all qualifications, is packed and stored.
The specification of the core material ingot casting is 445*1346*540mm, the specification 52*1310*5000mm of the skin material ingot casting.
It according to the above method, is repeated twice, final products are respectively to test volume one and test volume two, end properties and crystal grain
Organization chart such as attached drawing 1.
It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, above-described embodiment and explanation
It is merely illustrated the principles of the invention described in book, without departing from the spirit and scope of the present invention, the present invention also has
Various changes and modifications, these changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention
It is defined by the appending claims and its equivalent thereof.
Claims (10)
1. a kind of for manufacturing the material of high-strength corrosion-resistant erosion automobile evaporator tube sheet, it is characterised in that: the material includes core material
With skin material, the skin material includes in 0.4-0.5mm, the core material by the compound two sides that the core material is arranged in, material thickness
The chemical component (wt%) of following mass percent: Si: < 0.2%, Fe:0.1-0.3%, Cu:0.25-0.5%, Mn:1.0-1.7%,
Mg:0. < 0.05%, Zn: < 0.2%, Ti:0.1-0.2%, surplus are Al and inevitable impurity, and the skin material includes following matter
Measure the chemical component (wt%) of percentage: Si:6.8-8.2%, Fe: < 0.3%, Cu: < 0.3%, Mn: < 0.1%, Mg: < 0.05%, Zn: <
0.1%, Ti: < 0.05%, surplus is Al and inevitable impurity.
2. it is a kind of as described in claim 1 for manufacturing the material preparation method of high-strength corrosion-resistant erosion automobile evaporator tube sheet,
Specific step is as follows:
Step 1: raw material selection, the multi-layer composite aluminium alloy board band that selection hot rolling technology is combined is as tube sheet material；
Step 2: tube sheet material forming passes through stamping technology for multi-layer composite aluminium alloy board band punching press using impact molding machine
At assembly evaporator pipe sheet lamination；
Step 3: using soldering oven by step 2 tube sheet lamination and fin be brazed, complete expansion core body component system
It makes.
3. a kind of production method of aluminum alloy sheets and strips according to claim 2, it is characterised in that: specifically include following step
It is rapid: founding, sawing, soaking, milling face, compound, heating, hot roughing, hot finishing, cold rolling, finished products and accurate cutting.
4. a kind of production method of aluminum alloy sheets and strips according to claim 3, it is characterised in that: the founding step
In, the mass percent of the chemical component of the core material ingot casting after founding are as follows: Si: < 0.2%, Fe:0.1-0.3%, Cu:0.25-
0.5%, Mn:1.0-1.7%, Mg: < 0.05%, Zn: < 0.2%, Ti:0.1-0.2%, surplus are Al and inevitable impurity；Wherein
Smelting temperature be 700--750 DEG C, 700--730 DEG C of refining temperature, 680--700 DEG C of casting temperature, casting speed 50--55mm/
The step of min, the core material ingot casting after casting will also be by soaking, sawing and milling face.
5. a kind of production method of aluminum alloy sheets and strips according to claim 3, it is characterised in that: melted to skin material
Refining, the smelting temperature are 680--740 DEG C, skin material ingot casting after casting will also after sawing, milling face, heating and hot rolling, then
Cut the specification of needs.
6. a kind of production method of aluminum alloy sheets and strips according to claim 3, it is characterised in that: the composite steps
In, the core material ingot casting and the skin material ingot casting are subjected to composite heating, it, will be in the head for the composite ingot that will heat before heating
Tail is each to make a call to a steel band.
7. a kind of production method of aluminum alloy sheets and strips according to claim 3, it is characterised in that: the soak step
In, the core material ingot casting is heated to 580-630 DEG C, 8-12 hour are kept the temperature, the method that when cooling is cooled down using temperature control, and ingot casting temperature
At 400-620 DEG C, control control cooling time is in 10-15h, then natural cooling out.
8. a kind of production method of aluminum alloy sheets and strips according to claim 3, it is characterised in that: the hot roughing step
In, using hot roughing in 470--500 DEG C of cogging, three layers of compound aluminium pass through 15 or 16 passes, sotck thinkness 15--
25mm, intermediate base temperature are 380--420 DEG C, hot finishing are reused, by 3 passes to 5mm hot rolled coil, finishing temperature control
System is at 280--340 DEG C, natural cooling；In the cold rolling step, 5.0mm hot rolled coil is cold rolled to 0.44mm-0.5mm, in 300-
400 DEG C are implemented the finished products, and in the finished products step, the annealing process of finished products is annealed metal temperature 300-
400 DEG C, soaking time 1-2h, the grain structure of fine uniform is obtained, crystallite dimension finally obtains fine uniform in 15-30um
Grain structure, crystallite dimension is in 15-30um.
9. a kind of production method of aluminum alloy sheets and strips according to claim 3, it is characterised in that: the accurate cutting step
In rapid, obtained finished product is cut to the width needed on thin slitting, the convex inspection of mechanical property, recombination rate, cup is all
After qualification, it is packed and stored.
10. a kind of production method of aluminum alloy sheets and strips according to claim 4 and 5, it is characterised in that: the core material casting
The specification of ingot is 445*1346*540mm, the specification 52*1310*5000mm of the skin material ingot casting.
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| CN201910061283.3A CN109735745A (en) | 2019-01-23 | 2019-01-23 | A kind of preparation method for losing automobile evaporator tube sheet material for manufacturing high-strength corrosion-resistant |
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| CN201910061283.3A CN109735745A (en) | 2019-01-23 | 2019-01-23 | A kind of preparation method for losing automobile evaporator tube sheet material for manufacturing high-strength corrosion-resistant |
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| CN110027275A (en) * | 2019-05-23 | 2019-07-19 | 江苏常铝铝业股份有限公司 | High-strength corrosion-resisting aluminium alloy compound plate and strip and preparation method thereof |
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| CN111086289A (en) * | 2019-12-26 | 2020-05-01 | 银邦金属复合材料股份有限公司 | Water-cooling plate, manufacturing method thereof, battery comprising water-cooling plate and new energy automobile |
| CN114771049A (en) * | 2022-04-29 | 2022-07-22 | 无锡金洋铝业有限公司 | Corrosion-resistant aluminum brazing composite plate and preparation method thereof |
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Application publication date: 20190510 |