CN101733356A - Manufacture method of Al-Mg-Si cast aluminum alloy forging products - Google Patents

Manufacture method of Al-Mg-Si cast aluminum alloy forging products Download PDF

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Publication number
CN101733356A
CN101733356A CN200810202287A CN200810202287A CN101733356A CN 101733356 A CN101733356 A CN 101733356A CN 200810202287 A CN200810202287 A CN 200810202287A CN 200810202287 A CN200810202287 A CN 200810202287A CN 101733356 A CN101733356 A CN 101733356A
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CN
China
Prior art keywords
aluminium alloy
aluminum alloy
line aluminium
manufacture
bar
Prior art date
Application number
CN200810202287A
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Chinese (zh)
Inventor
孙保良
余忠土
邵光杰
邵百明
唐轩
Original Assignee
上海汇众汽车制造有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 上海汇众汽车制造有限公司 filed Critical 上海汇众汽车制造有限公司
Priority to CN200810202287A priority Critical patent/CN101733356A/en
Publication of CN101733356A publication Critical patent/CN101733356A/en

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Abstract

The invention discloses a manufacturing method of Al-Mg-Si series aluminum alloy forging products, which comprises the following steps of: 1, obtaining an Al-Mg-Si series aluminum alloy solution through melting; 2, refining the Al-Mg-Si series aluminum alloy solution; 3, continuously casting the refined Al-Mg-Si series aluminum alloy solution to obtain an aluminum alloy bar, and removing the head and the tail of the aluminum alloy bar; 4, barking and blanking the aluminum alloy bar subjected to removing the head and the tail; 5, homogenizing the blanked aluminum alloy bar and then making a blank; and 6, forging the Al-Mg-Si series aluminum alloy blank obtained after making the blank into a forging product. A continuous casting bar replaces an extrusion bar to be used as a raw material before the forging, therefore, the invention reduces the heating and the extrusion procedures, merges the two procedures of homogenizing the continuous casting bar and heating before making the blank, lowers the cost, and improves the yield.

Description

The manufacture method of Al-Mg-Si line aluminium alloy forged article

Technical field

The present invention relates to a kind of forging method of Al-alloy products, more particularly, relate to a kind of manufacture method of Al-Mg-Si line aluminium alloy forged article.

Background technology

Cutting down the consumption of energy, reduce environmental pollution and saving limited resources is very important and urgent problems that current auto industry faces.The automobile lightweight is important measures and the inexorable trend that improves automobile fuel ecomomy, energy efficient, and therefore, the automobile lightweight has huge meaning in actual applications.Because aluminium alloy has loss of weight, energy-conservation and better reclaiming, so the use amount of aluminium alloy in automobile is the trend that rises year by year.But along with developing of automobile industry, more and more higher to the cost and the performance requirement of aluminium alloy part, traditional forming technology has been difficult to satisfy above-mentioned requirements.

Fig. 2 shows the manufacture craft flow process of existing Al-Mg-Si line aluminium alloy automobile forged part.As shown in the figure, the manufacture method of existing Al-Mg-Si line aluminium alloy automobile forged part mainly comprises following operation:

A, obtain Al-Mg-Si line aluminium alloy solution by melting: promptly by in being arranged at holding furnace, temperature is more than or equal to adding silicon, magnesium, manganese and chromium in 800 ℃ the fine aluminium solution, melting forms Al-Mg-Si line aluminium alloy solution, uses mixing plant that above-mentioned Al-Mg-Si line aluminium alloy solution is stirred simultaneously;

B, refining: when the temperature for the treatment of Al-Mg-Si line aluminium alloy solution is 790 ℃~810 ℃, carry out refining in the gas mixture feeding Al-Mg-Si line aluminium alloy solution with nitrogen and refining agent 6AB formation, carry out online degasification, slagging-off;

C, continuous casting: prepare Al-Mg-Si line aluminium alloy continuous casting bar by continuous casting, and the rods and bars of aluminium alloy that obtains is removed end to end; Usually adopt vertical continuous casting technology, finish with 15 tons of outer conduction hydraulic pressure casting machines, continuous casting length is 6400 millimeters, quantity be 80 continuous casting rods/time, casting temperature is 680~720 ℃, and casting speed is 190~210 milliseconds/minute, and the crystallization cooling water flow is 90 liters/minute;

D, the Al-Mg-Si line aluminium alloy continuous casting bar of casting is carried out homogeneous handle: homogenizing temperature is 530 ℃~540 ℃, and temperature retention time is 6~8 hours;

E, the Al-Mg-Si line aluminium alloy continuous casting bar after the homogeneous processing is pushed: the bar external diameter after the extruding diminishes, but the performance of material increases;

F carries out blanking to the Al-Mg-Si line aluminium alloy continuous casting bar after the extruding, preheats then, base; Pre-warmed temperature is 500 ℃~510 ℃, and be 1.5~3 hours heat time heating time;

G according to the concrete parts that will produce, selects suitable deformation rate, and the Al-Mg-Si line aluminium alloy blank forging that obtains behind the base is become forged article.

Above-mentioned manufacture method adopts the extruding rod as the blank before the forging molding, forges into forged article, and its shortcoming is: 1. extrusion process causes lumber recovery lower owing to want crop to truncate; 2. operation is many, the cost height; 3. can form the coarse grain ring defective on the bar surface after the process extruding, to the performance generation harmful effect of forged article.

Summary of the invention

Technical problem to be solved by this invention is to provide a kind of manufacture method of Al-Mg-Si line aluminium alloy forged article of the raw material before adopting the vertical continuous casting rod as forging and molding.

The technical solution adopted in the present invention is: a kind of manufacture method of Al-Mg-Si line aluminium alloy forged article may further comprise the steps:

Step 1 obtains Al-Mg-Si line aluminium alloy solution by melting;

Step 2 is carried out refining to Al-Mg-Si line aluminium alloy solution;

Step 3 casts the Al-Mg-Si line aluminium alloy solution after the refining continuously, obtains rods and bars of aluminium alloy, and the rods and bars of aluminium alloy that casting obtains is removed end to end;

Step 4 is carried out peeling, blanking to the rods and bars of aluminium alloy after removing end to end;

Step 5 is carried out homogeneous with the aluminum alloy materials after the blanking and is handled, then base;

Step 6 becomes forged article with the Al-Mg-Si line aluminium alloy blank forging that obtains behind the base.

The manufacture method of above-mentioned Al-Mg-Si line aluminium alloy forged article, wherein, in step 4, the thickness of peeling is the abnormal structure that can remove this rods and bars of aluminium alloy surface that determines by metallographic test and the thickness of defective.

The present invention adopts the continuous casting rod to replace the extruding rod as the raw material before forging, and is processed into required heating and the extrusion process of extruding rod thereby reduced the continuous casting rod, has reduced cost; Simultaneously, owing to the waste product that has reduced the extrusion process generation has improved the lumber recovery of product, and improved greatly and forged raw-material coarse grain ring defective.This method simultaneously continuous casting rod homogeneous is handled and base before this 2 procedure of heating unite two into one, so adopt the present invention to have simplifying working process, improve lumber recovery, reduction manufacturing cost, advantage such as enhance productivity.

Description of drawings

Fig. 1 is the flow chart of the manufacture method of Al-Mg-Si line aluminium alloy forged article of the present invention.

Fig. 2 is the flow chart of the manufacture method of existing Al-Mg-Si line aluminium alloy automobile forged part.

The specific embodiment

Fig. 1 shows the flow chart of the manufacture method of Al-Mg-Si line aluminium alloy forged article of the present invention.

The present invention mainly may further comprise the steps:

Step 1 obtains Al-Mg-Si line aluminium alloy solution by melting;

Step 2, the Al-Mg-Si line aluminium alloy solution that step 1 is obtained carries out refining;

Step 3 casts the Al-Mg-Si line aluminium alloy solution after the refining continuously, obtains rods and bars of aluminium alloy, and the rods and bars of aluminium alloy that casting obtains is removed end to end;

Step 4 is carried out peeling, blanking to the rods and bars of aluminium alloy behind the tail of decaptitating; The general lathe that adopts carries out peeling, the thickness of peeling is the abnormal structure that can remove this rods and bars of aluminium alloy surface that determines by metallographic test and the thickness of defective, cutting length is decided on the parts that will make, in one embodiment of the invention, prepare the rods and bars of aluminium alloy that diameter is 95mm by vertical continuous casting, decaptitate the length of tail more than or equal to 200mm, and peeling thickness is monolateral 1.5~2.5mm, and cutting length is 490mm;

Step 5 is carried out homogeneous with the aluminum alloy materials after the blanking and is handled, then base; Homogenizing temperature is 530 ℃~540 ℃, and temperature retention time is 6~8 hours;

Step 6 becomes forged article with the Al-Mg-Si line aluminium alloy blank forging that obtains behind the base.

The process conditions of step 1 of the present invention, step 2, step 3, step 5 and step 6 are all same as the prior art, different is, the present invention has become the process flow of continuous casting of the prior art rod homogeneous-push-preheat-base the process flow of the peeling of continuous casting rod, blanking-homogeneous-base, this two procedures that preheats before homogeneous processing of continuous casting rod and the base is united two into one, saved the operation that preheats before extrusion process and the base, thereby simplified operation, improve lumber recovery, and reduced manufacturing cost.

Claims (4)

1. the manufacture method of an Al-Mg-Si line aluminium alloy forged article is characterized in that, may further comprise the steps:
Step 1 obtains Al-Mg-Si line aluminium alloy solution by melting;
Step 2 is carried out refining to described Al-Mg-Si line aluminium alloy solution;
Step 3 casts the Al-Mg-Si line aluminium alloy solution after the refining continuously, obtains rods and bars of aluminium alloy, and the rods and bars of aluminium alloy that casting obtains is removed end to end;
Step 4 is carried out peeling, blanking to the rods and bars of aluminium alloy after removing end to end;
Step 5 is carried out homogeneous with the aluminum alloy materials after the blanking and is handled, then base;
Step 6 becomes forged article with the Al-Mg-Si line aluminium alloy blank forging that obtains behind the base.
2. the manufacture method of Al-Mg-Si line aluminium alloy forged article as claimed in claim 1 is characterized in that, continuous vertical casting is adopted in the continuous casting in the step 3.
3. the manufacture method of Al-Mg-Si line aluminium alloy forged article as claimed in claim 1 is characterized in that, in step 4, the thickness of peeling is the abnormal structure that can remove this rods and bars of aluminium alloy surface that determines by metallographic test and the thickness of defective.
4. the manufacture method of Al-Mg-Si line aluminium alloy forged article as claimed in claim 1 is characterized in that, in step 5, the temperature of homogeneous is 530 ℃~540 ℃, and temperature retention time is 6~8 hours.
CN200810202287A 2008-11-06 2008-11-06 Manufacture method of Al-Mg-Si cast aluminum alloy forging products CN101733356A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200810202287A CN101733356A (en) 2008-11-06 2008-11-06 Manufacture method of Al-Mg-Si cast aluminum alloy forging products

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200810202287A CN101733356A (en) 2008-11-06 2008-11-06 Manufacture method of Al-Mg-Si cast aluminum alloy forging products

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102430676A (en) * 2010-09-29 2012-05-02 比亚迪股份有限公司 Cold forging method for aluminum alloy structural member
CN108213890A (en) * 2016-12-13 2018-06-29 山东瑞烨法兰有限公司 A kind of almag uses hydraulic press base ring rolls moulding process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102430676A (en) * 2010-09-29 2012-05-02 比亚迪股份有限公司 Cold forging method for aluminum alloy structural member
CN108213890A (en) * 2016-12-13 2018-06-29 山东瑞烨法兰有限公司 A kind of almag uses hydraulic press base ring rolls moulding process

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Application publication date: 20100616