CN103710592A - Preparation method of aluminum alloy profile for high speed train body - Google Patents

Preparation method of aluminum alloy profile for high speed train body Download PDF

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Publication number
CN103710592A
CN103710592A CN201310687911.1A CN201310687911A CN103710592A CN 103710592 A CN103710592 A CN 103710592A CN 201310687911 A CN201310687911 A CN 201310687911A CN 103710592 A CN103710592 A CN 103710592A
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insulation
cooled
temperature
water
warming
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CN201310687911.1A
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吴贤春
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芜湖万润机械有限责任公司
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Publication of CN103710592A publication Critical patent/CN103710592A/en

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Abstract

The invention discloses a preparation method of an aluminum alloy profile for a high speed train body. The aluminum alloy profile comprises the following components by mass percent: 0.05-0.1% of Si, 0.1-0.2% of Fe, 0.08-0.14% of Cu, 0.3-0.5% of Mn, 1.6-2.2% of Mg, 0.2-0.4% of Cr, 3.8-4.4% of Zn, 0.03-0.06% of Ni, 0.05-0.08% of Ti, 0.15-0.25% of Zr, 0.04-0.06% of V, 0.02-0.05% of Po, 0.06-0.12% of Hf, 0.03-0.05% of Ce, 0.02-0.03% of Tm and the balance of Al. The aluminum alloy profile prepared by the method is compact in tissue, fine in grain, excellent in overall performance, high in strength, good in plasticity, good in stress corrosion resistance, and good in welding performance, and can be widely applied to the material for the high speed train body.

Description

The preparation method of aluminium alloy extrusions for a kind of high-speed train body

Technical field

The present invention relates to the preparation method of aluminium alloy extrusions for a kind of high-speed train body, belong to aluminum alloy materials processing technique field.

Background technology

Aluminium alloy is a most widely used class non-ferrous metal structured material in industry, because of its density low, strength ratio is higher, approach or surpass high-quality steel, plasticity is good, there is the performances such as good electroconductibility, thermal conductivity, corrosion stability, can be processed into various section bars, be widely used in the aspects such as machinofacture, Transport Machinery, power machine and aircraft industry.In recent years, along with the development that China's communications and transportation is advanced by leaps and bounds, the speed per hour of bullet train has reached 300km/h.Therefore to the intensity of bullet train aluminum alloy bodywork section bar, anti-stress corrosiveness etc., require also more and more higher.

Summary of the invention

The preparation method who the object of this invention is to provide the high-speed train body use aluminium alloy extrusions that a kind of intensity is high, anti-stress corrosiveness is good.

For achieving the above object, the present invention adopts following technical scheme:

A preparation method for aluminium alloy extrusions for high-speed train body, comprises the following steps:

(1) according to element mass percent, meet following requirement: Si 0.05-0.1, Fe 0.1-0.2, Cu 0.08-0.14, Mn 0.3-0.5, Mg 1.6-2.2, Cr 0.2-0.4, Zn 3.8-4.4, Ni 0.03-0.06, Ti 0.05-0.08, Zr 0.15-0.25, V 0.04-0.06, Po 0.02-0.05, Hf 0.06-0.12, Ce 0.03-0.05, Tm 0.02-0.03, surplus is that Al prepares burden, furnace charge is dropped into smelting furnace and at 750-770 ℃, carry out melting, add and treat that furnace charge all melts, stir 20-30min, detect alloying constituent and adjust; Then add refining agent to carry out refining, refining temperature is 740-760 ℃, and refining time is 15-20min, standing 10-15min after skimming, then adjust temperature to 730-750 ℃, logical 50%N in aluminium liquid 2+ 35%Ar+10%CO+5%Cl 2diversity gas refinery by de-gassing 15-20min, gaseous tension is 0.15-0.20atm, gas flow is 1.2-2.0 m 3/ min, standing 20-30min, fully floats oxidation sludge, starts casting after skimming;

(2) adopt metal mold water-cooled semicontinuous casting technology, aluminium liquid tapping temperature is 720-740 ℃, and casting temp is 710-720 ℃, casting speed is 100-110 mm/min, cooling water pressure is 0.2-0.4MPa, and cooling water intake temperature is not higher than 25 ℃, and water outlet water temperature is not higher than 45 ℃;

(3) strand is carried out to homogenizing processing: first with 80-120 ℃/h, be warming up to 180-220 ℃, insulation 2-3h, with 100-150 ℃/h, be warming up to 480-510 ℃ again, insulation 5-10h, then high wind is air-cooled to 220-250 ℃, insulation 3-4h, with 80-120 ℃/h, be warming up to 440-480 ℃ again, insulation 4-6h, then be cooled to 280-320 ℃ with 70-90 ℃/h, insulation 3-4h, the water-cooled of coming out of the stove is to room temperature;

(4) ingot casting after homogenizing processing is heated to 450-480 ℃, then utilizes extrusion machine that the ingot casting after preheating is put into mould extrusion moulding, mold preheating temperature is 420-450 ℃, container preheating temperature 415-435 ℃, and extruding rate is 10-15m/min;

(5) the above-mentioned aluminium alloy extrusions squeezing out adopts online air-cooled or water smoke Cooling Quenching, after press quenching, carry out ageing treatment: first with 40-50 ℃/h, be warming up to 80-90 ℃, insulation 10-15h, air cooling is warming up to 160-180 ℃ with 80-100 ℃/h again to room temperature, insulation 5-10h, then with 30-40 ℃/h, be cooled to 105-125 ℃, insulation 8-12h, with 40-50 ℃/h, be warming up to 180-200 ℃ again, insulation 3-6h, air cooling is to room temperature, through surface treatment, finishing, inspect for acceptance, pack and get product.

Described refining agent preparation method is as follows: a. takes the raw material of following weight part: magnesium chloride 10-15, Repone K 15-20, blast-furnace slag 4-8, volcanic ash 5-10, fluorite 3-6, bitter water chestnut soil 4-8, useless brick powder 3-6, Graphite Powder 99 2-5, rhombspar 8-12, manganese sulfide 2-3, nano aluminium oxide 2-3, vinyltriethoxysilane 0.5-1, trolamine 1-2; B. fluorite, bitter water chestnut soil, rhombspar are mixed, 730-760 ℃ of calcining 2-3h, being cooled to and putting into concentration after room temperature is that the hydrochloric acid soln of 15-20% soaks 1-2h, takes out and is washed with distilled water to neutrality, dry, 1200-1250 ℃ of calcining 1-2h, is cooled to room temperature, pulverizes, crossing 100-150 mesh sieve mixes with blast-furnace slag, volcanic ash, useless brick powder, Graphite Powder 99, then add vinyltriethoxysilane and trolamine, 2000-3000rpm speed lapping 10-15min, stand-by; C. magnesium chloride and Repone K are mixed, be heated to 780-810 ℃, after its whole meltings, the powder that adds all the other raw materials and step b to make, stirs 20-30min, and air prilling, obtains refining agent.

Beneficial effect of the present invention:

The present invention passes through to increase the content of Mg, and suitably reduces the content of superfluous Si, increases strengthening phase Mg 2the solid solubility of Si, is guaranteeing, under the prerequisite of tensile strength, to improve the elongation of section bar; Also add the trace elements such as Ce, Tm, to put forward heavy alloyed welding property, reduced welding crack proneness.By the section bar dense structure after rational thermal treatment and extruding, crystal grain is tiny, and excellent combination property has that intensity is high, plasticity good, and anti-stress corrosiveness is good, and good welding property can be widely used in high-speed train body material.

Embodiment

A preparation method for aluminium alloy extrusions for high-speed train body, comprises the following steps:

(1) according to element mass percent, meet following requirement: Si 0.05-0.1, Fe 0.1-0.2, Cu 0.08-0.14, Mn 0.3-0.5, Mg 1.6-2.2, Cr 0.2-0.4, Zn 3.8-4.4, Ni 0.03-0.06, Ti 0.05-0.08, Zr 0.15-0.25, V 0.04-0.06, Po 0.02-0.05, Hf 0.06-0.12, Ce 0.03-0.05, Tm 0.02-0.03, surplus is that Al prepares burden, furnace charge is dropped into smelting furnace and at 760 ℃, carry out melting, add and treat that furnace charge all melts, stir 25min, detect alloying constituent and adjust; Then add refining agent to carry out refining, refining temperature is 750 ℃, and refining time is 20min, standing 15min after skimming, then adjust temperature to 740 ℃, logical 50%N in aluminium liquid 2+ 35%Ar+10%CO+5%Cl 2diversity gas refinery by de-gassing 15min, gaseous tension is 0.18atm, gas flow is 1.5 m 3/ min, standing 25min, fully floats oxidation sludge, starts casting after skimming;

(2) adopt metal mold water-cooled semicontinuous casting technology, aluminium liquid tapping temperature is 730 ℃, and casting temp is 715 ℃, and casting speed is 105 mm/min, and cooling water pressure is 0.3MPa, and cooling water intake temperature is not higher than 25 ℃, and water outlet water temperature is not higher than 45 ℃;

(3) strand is carried out to homogenizing processing: first with 100 ℃/h, be warming up to 220 ℃, insulation 2h, with 150 ℃/h, be warming up to 510 ℃ again, insulation 6h, then high wind is air-cooled to 240 ℃, insulation 3h, with 100 ℃/h, be warming up to 460 ℃ again, insulation 5h, then be cooled to 300 ℃ with 80 ℃/h, insulation 4h, the water-cooled of coming out of the stove is to room temperature;

(4) ingot casting after homogenizing processing is heated to 470 ℃, then utilizes extrusion machine that the ingot casting after preheating is put into mould extrusion moulding, mold preheating temperature is 430 ℃, 415 ℃ of container preheating temperatures, and extruding rate is 12m/min;

(5) the above-mentioned aluminium alloy extrusions squeezing out adopts online air-cooled or water smoke Cooling Quenching, after press quenching, carry out ageing treatment: first with 40 ℃/h, be warming up to 85 ℃, insulation 12h, air cooling is warming up to 170 ℃ with 90 ℃/h again to room temperature, insulation 8h, then with 35 ℃/h, be cooled to 110 ℃, insulation 10h, then with 45 ℃/h, be warming up to 195 ℃, insulation 5h, air cooling is to room temperature, through surface treatment, finishing, inspect for acceptance, pack and get product.

Described refining agent preparation method is as follows: a. takes the raw material of following weight (kg): magnesium chloride 15, Repone K 20, blast-furnace slag 6, volcanic ash 8, fluorite 4, bitter water chestnut soil 6, useless brick powder 5, Graphite Powder 99 4, rhombspar 10, manganese sulfide 3, nano aluminium oxide 2, vinyltriethoxysilane 0.7, trolamine 1.5; B. fluorite, bitter water chestnut soil, rhombspar are mixed, 740 ℃ of calcining 3h, being cooled to and putting into concentration after room temperature is that 20% hydrochloric acid soln soaks 1h, takes out and is washed with distilled water to neutrality, dry, 1220 ℃ of calcining 1h, are cooled to room temperature, pulverize, crossing 150 mesh sieves mixes with blast-furnace slag, volcanic ash, useless brick powder, Graphite Powder 99, then add vinyltriethoxysilane and trolamine, 3000rpm speed lapping 10min, stand-by; C. magnesium chloride and Repone K are mixed, be heated to 790 ℃, after its whole meltings, the powder that adds all the other raw materials and step b to make, stirs 20min, and air prilling, obtains refining agent.

The aluminium alloy extrusions of gained through check mechanical property is: tensile strength 491Mpa, and yield strength is 386Mpa, elongation is 19.5%.

Claims (2)

1. the preparation method of aluminium alloy extrusions for high-speed train body, is characterized in that comprising the following steps:
(1) according to element mass percent, meet following requirement: Si 0.05-0.1, Fe 0.1-0.2, Cu 0.08-0.14, Mn 0.3-0.5, Mg 1.6-2.2, Cr 0.2-0.4, Zn 3.8-4.4, Ni 0.03-0.06, Ti 0.05-0.08, Zr 0.15-0.25, V 0.04-0.06, Po 0.02-0.05, Hf 0.06-0.12, Ce 0.03-0.05, Tm 0.02-0.03, surplus is that Al prepares burden, furnace charge is dropped into smelting furnace and at 750-770 ℃, carry out melting, add and treat that furnace charge all melts, stir 20-30min, detect alloying constituent and adjust; Then add refining agent to carry out refining, refining temperature is 740-760 ℃, and refining time is 15-20min, standing 10-15min after skimming, then adjust temperature to 730-750 ℃, logical 50%N in aluminium liquid 2+ 35%Ar+10%CO+5%Cl 2diversity gas refinery by de-gassing 15-20min, gaseous tension is 0.15-0.20atm, gas flow is 1.2-2.0 m 3/ min, standing 20-30min, fully floats oxidation sludge, starts casting after skimming;
(2) adopt metal mold water-cooled semicontinuous casting technology, aluminium liquid tapping temperature is 720-740 ℃, and casting temp is 710-720 ℃, casting speed is 100-110 mm/min, cooling water pressure is 0.2-0.4MPa, and cooling water intake temperature is not higher than 25 ℃, and water outlet water temperature is not higher than 45 ℃;
(3) strand is carried out to homogenizing processing: first with 80-120 ℃/h, be warming up to 180-220 ℃, insulation 2-3h, with 100-150 ℃/h, be warming up to 480-510 ℃ again, insulation 5-10h, then high wind is air-cooled to 220-250 ℃, insulation 3-4h, with 80-120 ℃/h, be warming up to 440-480 ℃ again, insulation 4-6h, then be cooled to 280-320 ℃ with 70-90 ℃/h, insulation 3-4h, the water-cooled of coming out of the stove is to room temperature;
(4) ingot casting after homogenizing processing is heated to 450-480 ℃, then utilizes extrusion machine that the ingot casting after preheating is put into mould extrusion moulding, mold preheating temperature is 420-450 ℃, container preheating temperature 415-435 ℃, and extruding rate is 10-15m/min;
(5) the above-mentioned aluminium alloy extrusions squeezing out adopts online air-cooled or water smoke Cooling Quenching, after press quenching, carry out ageing treatment: first with 40-50 ℃/h, be warming up to 80-90 ℃, insulation 10-15h, air cooling is warming up to 160-180 ℃ with 80-100 ℃/h again to room temperature, insulation 5-10h, then with 30-40 ℃/h, be cooled to 105-125 ℃, insulation 8-12h, with 40-50 ℃/h, be warming up to 180-200 ℃ again, insulation 3-6h, air cooling is to room temperature, through surface treatment, finishing, inspect for acceptance, pack and get product.
2. the preparation method with aluminium alloy extrusions for high-speed train body according to claim 1, it is characterized in that, described refining agent preparation method is as follows: a. takes the raw material of following weight part: magnesium chloride 10-15, Repone K 15-20, blast-furnace slag 4-8, volcanic ash 5-10, fluorite 3-6, bitter water chestnut soil 4-8, useless brick powder 3-6, Graphite Powder 99 2-5, rhombspar 8-12, manganese sulfide 2-3, nano aluminium oxide 2-3, vinyltriethoxysilane 0.5-1, trolamine 1-2; B. fluorite, bitter water chestnut soil, rhombspar are mixed, 730-760 ℃ of calcining 2-3h, being cooled to and putting into concentration after room temperature is that the hydrochloric acid soln of 15-20% soaks 1-2h, takes out and is washed with distilled water to neutrality, dry, 1200-1250 ℃ of calcining 1-2h, is cooled to room temperature, pulverizes, crossing 100-150 mesh sieve mixes with blast-furnace slag, volcanic ash, useless brick powder, Graphite Powder 99, then add vinyltriethoxysilane and trolamine, 2000-3000rpm speed lapping 10-15min, stand-by; C. magnesium chloride and Repone K are mixed, be heated to 780-810 ℃, after its whole meltings, the powder that adds all the other raw materials and step b to make, stirs 20-30min, and air prilling, obtains refining agent.
CN201310687911.1A 2013-12-17 2013-12-17 Preparation method of aluminum alloy profile for high speed train body CN103710592A (en)

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Cited By (16)

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Publication number Priority date Publication date Assignee Title
CN104018041A (en) * 2014-06-26 2014-09-03 龙口市丛林铝材有限公司 High-speed rail train aluminum profile and preparation method thereof
CN106399773A (en) * 2016-11-28 2017-02-15 安徽省煜灿新型材料科技有限公司 High-strength and high-toughness aluminum alloy profile
CN106399779A (en) * 2016-11-28 2017-02-15 安徽省煜灿新型材料科技有限公司 High-strength and corrosion-resistant aluminum alloy profile and preparation method thereof
CN106435301A (en) * 2016-11-18 2017-02-22 山东裕航特种合金装备有限公司 Production method of aluminum alloy car body keel frame material of new energy passenger car
CN106435304A (en) * 2016-08-27 2017-02-22 来安县科来兴实业有限责任公司 Anti-cracking aluminum alloy special for motor train unit gear case body and preparing method of anti-cracking aluminum alloy
CN106555088A (en) * 2017-01-24 2017-04-05 成都阳光铝制品有限公司 A kind of bullet train aluminum alloy materials
CN106591752A (en) * 2016-12-30 2017-04-26 西南铝业(集团)有限责任公司 2060 alloy homogenization method
CN106636811A (en) * 2016-12-13 2017-05-10 佛山市三水凤铝铝业有限公司 Aluminium alloy section for high speed train body and manufacturing method of aluminium alloy section
CN107159738A (en) * 2017-06-30 2017-09-15 合肥博创机械制造有限公司 A kind of processing technology of aluminium alloy beater or beat-up
CN107201468A (en) * 2017-04-28 2017-09-26 浙江大侠铝业有限公司 High-intensity high-tenacity rods and bars of aluminium alloy and its preparation technology
CN107236878A (en) * 2017-06-23 2017-10-10 巢湖市兰天大诚门窗幕墙有限公司 High-strength aluminum alloy composite gate
CN107312956A (en) * 2017-07-18 2017-11-03 合肥万之景门窗有限公司 A kind of preparation technology of aluminum alloy materials
CN107739907A (en) * 2017-11-28 2018-02-27 广西南宁桂启科技发展有限公司 Aluminium nickel copper-manganese lanthanum alloy intermediate and its application for preparing aluminium alloy
CN108188192A (en) * 2018-01-02 2018-06-22 龙口市丛林铝材有限公司 A kind of big Wall-Thickness Difference multi-cavity aluminium section bar lateral bending problem accurate control method of big specification
CN110218919A (en) * 2019-07-12 2019-09-10 广亚铝业有限公司 A kind of high-strength aluminum alloy material and preparation method thereof
CN111069321A (en) * 2019-11-22 2020-04-28 辽宁忠旺集团有限公司 Aluminum alloy large-width thin-wall track car body floor profile extrusion process

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CN102978472A (en) * 2012-11-09 2013-03-20 安徽欣意电缆有限公司 Al-Fe-Bi-RE aluminum alloy, and preparation method and power cable thereof
CN103088226A (en) * 2012-12-05 2013-05-08 安徽徽铝铝业有限公司 Preparation method of refining agent for melting aluminum alloy section doped with plant ash
CN102978488A (en) * 2012-12-11 2013-03-20 丛林集团有限公司 Production technology of aluminum alloy sectional bar for automobile bumper
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Cited By (19)

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Publication number Priority date Publication date Assignee Title
CN104018041A (en) * 2014-06-26 2014-09-03 龙口市丛林铝材有限公司 High-speed rail train aluminum profile and preparation method thereof
CN106435304B (en) * 2016-08-27 2019-03-26 来安县科来兴实业有限责任公司 A kind of dedicated cracking resistance aluminium alloy of EMU gear case body and preparation method thereof
CN106435304A (en) * 2016-08-27 2017-02-22 来安县科来兴实业有限责任公司 Anti-cracking aluminum alloy special for motor train unit gear case body and preparing method of anti-cracking aluminum alloy
CN106435301A (en) * 2016-11-18 2017-02-22 山东裕航特种合金装备有限公司 Production method of aluminum alloy car body keel frame material of new energy passenger car
CN106399773A (en) * 2016-11-28 2017-02-15 安徽省煜灿新型材料科技有限公司 High-strength and high-toughness aluminum alloy profile
CN106399779A (en) * 2016-11-28 2017-02-15 安徽省煜灿新型材料科技有限公司 High-strength and corrosion-resistant aluminum alloy profile and preparation method thereof
CN106636811A (en) * 2016-12-13 2017-05-10 佛山市三水凤铝铝业有限公司 Aluminium alloy section for high speed train body and manufacturing method of aluminium alloy section
CN106591752A (en) * 2016-12-30 2017-04-26 西南铝业(集团)有限责任公司 2060 alloy homogenization method
CN106555088A (en) * 2017-01-24 2017-04-05 成都阳光铝制品有限公司 A kind of bullet train aluminum alloy materials
CN107201468A (en) * 2017-04-28 2017-09-26 浙江大侠铝业有限公司 High-intensity high-tenacity rods and bars of aluminium alloy and its preparation technology
CN107236878A (en) * 2017-06-23 2017-10-10 巢湖市兰天大诚门窗幕墙有限公司 High-strength aluminum alloy composite gate
CN107159738A (en) * 2017-06-30 2017-09-15 合肥博创机械制造有限公司 A kind of processing technology of aluminium alloy beater or beat-up
CN107312956A (en) * 2017-07-18 2017-11-03 合肥万之景门窗有限公司 A kind of preparation technology of aluminum alloy materials
CN107312956B (en) * 2017-07-18 2019-02-15 合肥万之景门窗有限公司 A kind of preparation process of aluminum alloy materials
CN107739907A (en) * 2017-11-28 2018-02-27 广西南宁桂启科技发展有限公司 Aluminium nickel copper-manganese lanthanum alloy intermediate and its application for preparing aluminium alloy
CN108188192A (en) * 2018-01-02 2018-06-22 龙口市丛林铝材有限公司 A kind of big Wall-Thickness Difference multi-cavity aluminium section bar lateral bending problem accurate control method of big specification
CN108188192B (en) * 2018-01-02 2019-09-10 龙口市丛林铝材有限公司 A kind of big Wall-Thickness Difference multi-cavity aluminum profile lateral bending problem accurate control method of big specification
CN110218919A (en) * 2019-07-12 2019-09-10 广亚铝业有限公司 A kind of high-strength aluminum alloy material and preparation method thereof
CN111069321A (en) * 2019-11-22 2020-04-28 辽宁忠旺集团有限公司 Aluminum alloy large-width thin-wall track car body floor profile extrusion process

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Application publication date: 20140409