CN101712116B - Process for manufacturing high-strength large-scale aluminum alloy plate - Google Patents

Process for manufacturing high-strength large-scale aluminum alloy plate Download PDF

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Publication number
CN101712116B
CN101712116B CN2008101677220A CN200810167722A CN101712116B CN 101712116 B CN101712116 B CN 101712116B CN 2008101677220 A CN2008101677220 A CN 2008101677220A CN 200810167722 A CN200810167722 A CN 200810167722A CN 101712116 B CN101712116 B CN 101712116B
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alloy plate
aluminium alloy
solution
ingot blank
temperature
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CN2008101677220A
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CN101712116A (en
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程拥军
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Zhejiang Tiger Aluminium Co., Ltd.
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程拥军
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Abstract

The invention discloses a process for manufacturing a high-strength aluminum alloy plate, which comprises eleven steps of batching, smelting, checking, standing, casting, sawing and face milling, heat treatment, hot rolling, quenching, ageing and finished product shearing in turn. The manufacturing process radically changes the common phenomena of high energy consumption and high pollution in the conventional smelting furnace, meets the requirements of energy conservation and environmental protection, and the cast aluminum alloy plate has high mechanical property and good machining quality, and meanwhile the finished product rate and the production efficiency are effectively improved.

Description

A kind of manufacturing process of high-strength large-scale aluminum alloy plate
Technical field:
The present invention relates to a kind of manufacturing process of high-strength large-scale aluminum alloy plate.
Background technology:
In the prior art, the manufacturing process of aluminum alloy plate materials is constantly perfect, but yet have following deficiency simultaneously: 1, the heating energy source of smelting furnace adopts coal, fuel oil and electric power etc. mostly in the past, not only pollute big, cause production environment abominable, and the energy resource consumption height, be unfavorable for the control of production cost; 2, raw metal directly enters the casting machine casting after being smelted into solution, is difficult to guarantee the casting temperature of solution like this, and making the ingot blank unstable properties that casting is come out also can influence yield rate simultaneously; 3, the aluminium ingot maximum length of casting in the existing casting technique only has 4 meters, thereby can not satisfy the needs of people to large-sized sheet material; 4, the heat treatment technics of blank single, fall behind, not only tissue and the performance to aluminium alloy produced many adverse effects, causes the intensity of aluminum alloy plate materials and hardness etc. not to reach requirement, and influenced the heat treatment production efficiency of aluminium alloy greatly.
Summary of the invention:
The objective of the invention is to overcome above-mentioned the deficiencies in the prior art, a kind of manufacturing process of high-strength large-scale aluminum alloy plate is provided, it has not only fundamentally changed the high energy consumption of traditional smelting furnace existence, the universal phenomenon of high pollution, reach energy conservation and environment protection, and the aluminum alloy plate materials that casts out has good mechanical performance and good crudy, and yield rate and production efficiency all effectively improve simultaneously.
According to high-strength large-scale aluminum alloy plate manufacturing process provided by the invention, in turn include the following steps:
Batching: the component of each raw metal and weight proportion are: manganese 0.05%~1.5%, copper 0.05%~0.4%, nobelium 0.06%~0.4%, magnesium 0.6%~4.5%, iron 0.025%~0.5%, silicon 0.2%~1%, titanium 0.01%~0.04%, all the other are aluminium.
Melting: the raw metal of said ratio is put into the natural gas smelting furnace, and be heated to 760~780 ℃, make the raw metal fusing form aluminium alloy solution, smelting time is 3~5 hours.
Check: to above-mentioned solution sampling, sampling solution is carried out the composition check, and make corresponding adjustment according to assay by detecting instrument.
Leave standstill: will change electrical heating over to through the aluminium alloy solution of check and leave standstill in the stove, and be heated to 720~740 ℃, stove is left standstill in electrical heating remains in this temperature the temperature of aluminium alloy solution by its inner thermal insulating layer always, and time of repose is 10~20 minutes.
Casting: under the intensity of cooling of 700~740 ℃ temperature and 0.1~0.18mpa, to leave standstill the aluminium alloy solution that flows out by chute in the stove by hydraulic deep-well type casting machine with the speed of 40~60mm/min and be cast as ingot blank, its ingot blank casting length is 8.6m to the maximum.
Sawing with mill face: as required the ingot blank sawing is become Len req, and two big faces of ingot blank is carried out milling, eliminate blemish with milling machine.
Heat treated: will put into gas heating furnace through sawing and the ingot blank that mills face, under 530~580 ℃ temperature, keep 10~20 hours.
Hot rolling: is that 530~580 ℃ ingot blank carries out hot rolling with hot-rolling mill to temperature, is rolled into the thick aluminum alloy plate materials of 12~260mm.
Quench: the aluminum alloy plate materials after the hot rolling is put into glowing furnace be heated to 450~580 ℃, be incubated and put into the beneath tank of glowing furnace after 2~8 hours and cooled off 10~12 minutes.
Timeliness: cooled aluminium alloy plate is put into aging furnace be heated to 150~220 ℃, be incubated after 6~8 hours and take out, the cooling back forms finished product naturally.
Finished product is sheared: with shearing equipment finished product is sheared on request.
The present invention also has following attached technical characterictic:
In described fusion process, in smelting furnace, add refining agent, slagging agent and nitrogen solution is carried out a slag hitting degasification.
Leave standstill in the process described, in leaving standstill stove, add refining agent, slagging agent and coverture alloy solution is carried out secondary slag hitting degasification.
According to high-strength large-scale aluminum alloy plate manufacturing process provided by the invention, have following advantage with respect to prior art:
The first, the present invention has adopted novel natural gas aluminium alloy smelting technology, and this technology has the characteristics of energy-conserving and environment-protective, has fundamentally changed the high energy consumption of traditional smelting furnace existence, the universal phenomenon of high pollution.
Second, the present invention has increased the operation that electrical heating is left standstill before the aluminium alloy solution casting, by leaving standstill solution is cast under temperature constant state, thereby avoided the excessive influence of variations in temperature to the ingot blank castability, make the aluminium alloy ingot blank obtain desirable crystalline structure and flat surface, the machined that improves aluminium alloy capability and minimizing aluminum alloy plate materials is had important function.
The 3rd, the present invention adopts the hydraulic deep-well type foundry engieering, and by cooperating of hydraulic control system and deep-wall type structure, its maximum casting length has reached 8.6m, thereby can satisfy the needs of people to large-sized sheet material; Simultaneously, this hydraulic control system has also increased the stationarity of ingot blank casting, makes its moulding that at the uniform velocity descends, thereby has further guaranteed the crudy of ingot blank, and improved yield rate and production efficiency.
The 4th, the present invention has adopted quick solid solution aging to strengthen the heat treatment technics of (the back timeliness of promptly quenching earlier), thereby makes aluminum alloy plate materials obtain high strength, the contour mechanical performance of high rigidity under the situation that guarantees size and surface accuracy.
The 5th, the present invention is in melting and leave standstill and carried out a slag hitting degasification and secondary slag hitting degasification in the process respectively, thereby has improved the purity of aluminium alloy solution significantly, and the ingot blank performance that casting is come out is more superior.
The specific embodiment:
According to a kind of high-strength large-scale aluminum alloy plate manufacturing process provided by the invention, in turn include the following steps:
Batching: the component of each raw metal and weight proportion are: manganese 0.05%~1.5%, copper 0.05%~0.4%, nobelium 0.06%~0.4%, magnesium 0.6%~4.5%, iron 0.025%~0.5%, silicon 0.2%~1%, titanium 0.01%~0.04%, all the other are aluminium.
Melting: the raw metal of said ratio is put into the natural gas smelting furnace, and be heated to 760~780 ℃, make the raw metal fusing form aluminium alloy solution, smelting time is 3~5 hours; Simultaneously, in body of heater, add refining agent, slagging agent and nitrogen solution is carried out a slag hitting degasification.
Check: to above-mentioned solution sampling, sampling solution is carried out the composition check, and make corresponding adjustment, for example,, then in smelting furnace, increase respective amount and get final product if find that wherein certain metal lacks content according to assay by the spectrum spectrophotometer; Can improve the yield rate of ingot blank casting by this inspection process.
Leave standstill: will change electrical heating over to through the aluminium alloy solution of check and leave standstill in the stove, and be heated to 720~740 ℃, stove is left standstill in electrical heating remains in this temperature the temperature of aluminium alloy solution by its inner thermal insulating layer always, and time of repose is 10~20 minutes; Simultaneously, in stove is left standstill in electrical heating, add refining agent, slagging agent and coverture alloy solution is carried out secondary slag hitting degasification,, improve the processability of ingot blank to guarantee solution purity.
Casting: under the intensity of cooling of 700~740 ℃ temperature and 0.1~0.18mpa, to leave standstill the aluminium alloy solution that flows out by chute in the stove by hydraulic deep-well type casting machine with the speed of 40~60mm/min and be cast as ingot blank, its ingot blank casting length is 8.6m to the maximum, thereby can satisfy the needs of people to large-sized sheet material.During casting, can select to use continuous casting and semi-continuous casting dual mode.
Sawing with mill face: as required the ingot blank sawing is become Len req, and two big faces of ingot blank is carried out milling, eliminate blemish with milling machine.In this process,, then only mill face after the sawing end to end with ingot blank and get final product if when the client needs large-scale aluminum alloy plate.
Heat treated: will put into gas heating furnace through sawing and the ingot blank that mills face, under 530~580 ℃ temperature, keep 10~20 hours.
Hot rolling: is that 530~580 ℃ ingot blank carries out hot rolling with hot-rolling mill to temperature, is rolled into the thick aluminum alloy plate materials of 12~260mm.
Quench: the aluminum alloy plate materials after the hot rolling is put into glowing furnace be heated to 450~580 ℃, be incubated and put into the beneath tank of glowing furnace after 2~8 hours and cooled off 10~12 minutes.
Timeliness: cooled aluminium alloy plate is put into aging furnace be heated to 150~220 ℃, be incubated after 6~8 hours and take out, the cooling back forms finished product naturally.
Finished product is sheared: with shearing equipment finished product is sheared on request.
The foregoing description is only for the usefulness that the present invention is described; and be not limitation of the present invention; the those of ordinary skill in relevant technologies field; under the situation that does not break away from the spirit and scope of the present invention; can also make various variations and modification; therefore all technical schemes that are equal to also belong to category of the present invention, and scope of patent protection of the present invention should be limited by each claim.

Claims (3)

1. the manufacturing process of a high-strength aluminium alloy plate material is characterized in that in turn including the following steps:
(1) batching: the component of each raw metal and weight proportion are: manganese 0.05%~1.5%, copper 0.05%~0.4%, nobelium 0.06%~0.4%, magnesium 0.6%~4.5%, iron 0.025%~0.5%, silicon 0.2%~1%, titanium 0.01%~0.04%, and all the other are aluminium;
(2) melting: the raw metal of said ratio is put into the natural gas smelting furnace, and be heated to 760~780 ℃, make the raw metal fusing form aluminium alloy solution, smelting time is 3~5 hours;
(3) check: to above-mentioned solution sampling, sampling solution is carried out the composition check, and make corresponding adjustment according to assay by detecting instrument;
(4) leave standstill: will change electrical heating over to through the aluminium alloy solution of check and leave standstill in the stove, and be heated to 720~740 ℃, stove is left standstill in electrical heating remains in this temperature the temperature of aluminium alloy solution by its inner thermal insulating layer always, and time of repose is 10~20 minutes;
(5) casting: under the intensity of cooling of 700~740 ℃ temperature and 0.1~0.18mpa, to leave standstill the aluminium alloy solution that flows out by chute in the stove by hydraulic deep-well type casting machine with the speed of 40~60mm/min and be cast as ingot blank, its ingot blank casting length is 8.6m to the maximum;
(6) sawing with mill face: as required the ingot blank sawing is become Len req, and two big faces of ingot blank is carried out milling, eliminate blemish with milling machine;
(7) heat treated: will put into gas heating furnace through sawing and the ingot blank that mills face, under 530~580 ℃ temperature, keep 10~20 hours;
(8) hot rolling: is that 530~580 ℃ ingot blank carries out hot rolling with hot-rolling mill to temperature, is rolled into the thick aluminum alloy plate materials of 12~260mm;
(9) quench: the aluminum alloy plate materials after the hot rolling is put into glowing furnace be heated to 450~580 ℃, be incubated and put into the beneath tank of glowing furnace after 2~8 hours and cooled off 10~12 minutes;
(10) timeliness: cooled aluminium alloy plate is put into aging furnace be heated to 150~220 ℃, be incubated after 6~8 hours and take out, the cooling back forms finished product naturally;
(11) finished product is sheared: with shearing equipment finished product is sheared on request.
2. the manufacturing process of a kind of high-strength aluminium alloy plate material according to claim 1 is characterized in that: in described fusion process, add refining agent, slagging agent and nitrogen in smelting furnace solution is carried out a slag hitting degasification.
3. the manufacturing process of a kind of high-strength aluminium alloy plate material according to claim 1 and 2 is characterized in that: leave standstill in the process described, add refining agent, slagging agent and coverture in leaving standstill stove alloy solution is carried out secondary slag hitting degasification.
CN2008101677220A 2008-10-06 2008-10-06 Process for manufacturing high-strength large-scale aluminum alloy plate Expired - Fee Related CN101712116B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103088274A (en) * 2011-11-03 2013-05-08 精美铝业有限公司 Production technology of aluminum alloy medium plate
CN103014570B (en) * 2012-12-27 2016-03-16 西南铝业(集团)有限责任公司 A kind of production method of aluminum alloy plate materials
CN103072330B (en) * 2013-02-21 2015-04-22 南通恒秀铝热传输材料有限公司 Aluminum alloy sheet for lateral plate of automobile radiator and manufacturing method for aluminum alloy sheet
CN104438424B (en) * 2014-12-12 2017-02-01 西南铝业(集团)有限责任公司 Optimization process of 5083H321 aluminum alloy plate
CN106319256B (en) * 2015-07-10 2018-12-11 帅翼驰新材料集团有限公司 A kind of production method promoting Al-Si-Cu line aluminium alloy ingot pinhole rate
CN107034394B (en) * 2015-07-13 2018-07-17 上海帅翼驰铝合金新材料有限公司 A kind of production method promoting AlSi12Cu aluminium alloy ingots comprehensive performances
CN106367636A (en) * 2016-09-19 2017-02-01 吉林工程技术师范学院 Preparation technology of wear-resistant car aluminum alloy plate with excellent wear-resistant effect
CN106435269A (en) * 2016-11-02 2017-02-22 无锡艾科瑞思产品设计与研究有限公司 Titanium alloy luggage box and manufacturing process thereof
CN107142399B (en) * 2017-05-27 2019-08-23 清远市正通金属制品有限公司 A kind of aluminium alloy and ultra-wide aluminum alloy plate materials preparation process

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1229892A (en) * 1999-01-27 1999-09-29 周福海 Method of producing aluminium alloy tube
CN1667148A (en) * 2005-04-07 2005-09-14 郑州大学 6063 aluminium alloy made by fine grained aluminium ingot and preparation method thereof
CN101050498A (en) * 2007-05-16 2007-10-10 毕祥玉 Technique for casting, rolling allautal in high intensity
WO2008078399A1 (en) * 2006-12-22 2008-07-03 Nippon Light Metal Company, Ltd. Method of producing aluminum alloy sheet

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1229892A (en) * 1999-01-27 1999-09-29 周福海 Method of producing aluminium alloy tube
CN1667148A (en) * 2005-04-07 2005-09-14 郑州大学 6063 aluminium alloy made by fine grained aluminium ingot and preparation method thereof
WO2008078399A1 (en) * 2006-12-22 2008-07-03 Nippon Light Metal Company, Ltd. Method of producing aluminum alloy sheet
CN101050498A (en) * 2007-05-16 2007-10-10 毕祥玉 Technique for casting, rolling allautal in high intensity

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Owner name: ZHEJIANG SHUNHU ALUMINIUM CO., LTD.

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Address after: 321300, Huaxia Road, Yongkang Economic Development Zone, Zhejiang, Jinhua 115, China

Patentee after: Zhejiang Tiger Aluminium Co., Ltd.

Address before: 321300 No. 115 Huaxia Road, Yongkang Economic Development Zone, Zhejiang, China

Patentee before: Cheng Yongjun

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