CN102166855B - Manufacture method of aluminum alloy composite plate for tank body of railway tanker - Google Patents
Manufacture method of aluminum alloy composite plate for tank body of railway tanker Download PDFInfo
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Abstract
The invention discloses a manufacture method of an aluminum alloy composite plate for a tank body of a railway tanker, relating to the manufacture of aluminum alloy composite plates and solving the problem of low tensile strength and low non-proportional extension strength of the pure aluminum plate adopted by the tank body of the railway tanker. The method comprises the steps of: 1, preparing an alloy melt; 2, casting an alloy ingot; 3, uniformly annealing; 4, cladding; 5, thermally rolling, 6, annealing a finished product; and 7, finishing to obtain the aluminum alloy composite plate for the tank body of the railway tanker. The plate prepared by using the method has the advantages of straightness, uniform color, uniform and stable cladding layer thickness, excellent comprehensive mechanical property and better nitric acid corrosion resistance, wherein the excellent comprehensive mechanical property is shown as follows: the tensile strength is not less than 170N/mm<2>, non-proportional extension strength is not less than 70N/mm<2> and percentage elongation after fracture is not less than 20 percent. The invention can be used for processing and manufacturing the tank body of the railway tanker.
Description
Technical field
The present invention relates to a kind of manufacture method of made of aluminum alloy composite board.
Background technology
At present, railway all adopts anti-nitric acid causticity to make by good fine aluminium sheet material at the tank car tank body of usefulness, fine aluminium sheet material poor mechanical property, and show as: tensile strength is low, only is 60～100N/mm
2Non-proportional extension intensity is low, is not more than 15N/mm
2Therefore, cause tank car tank body in use to have gross distortion, problems of crack, restricted the development of large-tonnage level tank car.
Summary of the invention
The present invention seeks to for a kind of manufacture method of aluminum alloy composite plate for tank body of railway tanker is provided, to solve railway in the problem that tensile strength is low, Non-proportional extension intensity is low of the fine aluminium sheet material of the tank car tank body employing of usefulness.
The manufacture method of aluminum alloy composite plate for tank body of railway tanker, described manufacture method realizes according to the following steps: one, the mass percent in element in the aluminum alloy plate materials is that Mg:2.2%～2.8%, Cr:0.15%～0.35%, Si≤0.25%, Fe≤0.40%, Cu≤0.10%, Mn≤0.10%, Zn≤0.10% and surplus are the ratios of Al, take by weighing aluminium alloy ingots and magnesium ingot and join in the dry smelting furnace, be melting 2.5～4.5 hours under 710 ℃～750 ℃ conditions in temperature, obtain basic unit's alloy molten solution; Two, the basic unit's alloy molten solution that step 1 is made is that 700 ℃～715 ℃, casting speed are that 60mm/min～65mm/min, cooling water intensity are that 0.08MPa～0.15MPa and cooling water temperature are to be cast as the ingot bar that thickness is 220mm～255mm under 10 ℃～20 ℃ the condition in casting temperature, and with ingot bar mill the surface casting oxide skin, obtain basic unit's alloy ingot; Three, the basic unit's alloy ingot that step 2 is made carries out homogenizing annealing, and annealing temperature is 455 ℃～465 ℃, is incubated 18～22 hours; Four, be the ratio of Al in the mass percent Si of element in the aluminum alloy plate materials≤0.25%, Fe≤0.35%, Cu≤0.05%, Mn≤0.03%, Mg≤0.03%, Zn≤0.05%, Ti≤0.03%, V≤0.05% and surplus, take by weighing aluminium alloy ingots and join in the dry smelting furnace, be melting 2.5～4.5 hours under 710 ℃～750 ℃ conditions in temperature, obtain the coating alloy liquation; Five, the coating alloy liquation that step 4 is made is that 700 ℃～710 ℃, casting speed are that 55mm/min～60mm/min, cooling water intensity are that 0.08MPa～0.15MPa and cooling water temperature are to be cast as the coating alloy ingot bar that thickness is 240mm～270mm under 10 ℃～20 ℃ the condition in casting temperature; Six, the coating alloy ingot bar that step 5 is made carries out homogenizing annealing, and annealing temperature is 455 ℃～465 ℃, is incubated 18～22 hours; Seven, will put into the temperature that Reform of A Chain Heating Furnace is heated to the coating alloy ingot bar through the coating alloy ingot bar that step 6 is processed is 420 ℃～500 ℃, the thickness that is hot-rolled down to ingot bar through 19～24 passages is 41.7mm～42.3mm, being cut to length is 1420mm～1480mm again, get blank, and blank is down to room temperature, obtain the coating alloy blank; Eight, the coating alloy blank that step 7 is obtained stacks and put into Reform of A Chain Heating Furnace with basic unit's alloy ingot of processing through step 3, and to be heated to temperature be 420 ℃～450 ℃, be 4～7 hours heat time heating time, being hot-rolled down to thickness through 27～31 passages again is 18.2mm～22.2mm, makes composite board; Nine, the composite board that step 8 is made carries out finished products, and annealing temperature is 380 ℃～420 ℃, and be 1～2 hour heat time heating time, utilizes the straightener aligning after the taking-up, and again sawing obtains aluminum alloy composite plate for tank body of railway tanker.
Single impurity in the aluminum alloy plate materials of the present invention≤0.05%, the scope of all dirt are≤0.15%, and the impurity in this scope is on the not impact of performance of made of aluminum alloy composite board.
The present invention is by the rational proportion of basic unit's alloy and coating alloy composition, so that the general fine aluminium sheet material of Performance Ratio at room temperature is high, decay resistance and mechanical performance are good equally; By being laminated with and hot-rolled process, making the generation that is laminated with ingot bar minimizing crackle; Adopt homogenizing annealing to eliminate microsegregation and casting stress, make sheet material have preferably processing and processability; Adopt finished products, strictly control heat time heating time, sheet material heats up rapidly, and even tissue without coarse grain, has guaranteed the final stable mechanical property of sheet material.
Straight, the color homogeneous of made of aluminum alloy composite board of the present invention's preparation, coating thickness is even, stable, and processability is good in the industrial production, and comprehensive mechanical property is good, and tensile strength is not less than 170N/mm
2, Non-proportional extension intensity is not less than 70N/mm
2, elongation after fracture is not less than 20%, has simultaneously preferably decay resistance, is fit to make the railway tank tank body.
The specific embodiment
The specific embodiment one: the manufacture method of aluminum alloy composite plate for tank body of railway tanker, described manufacture method realizes according to the following steps: one, the mass percent in element in the aluminum alloy plate materials is that Mg:2.2%～2.8%, Cr:0.15%～0.35%, Si≤0.25%, Fe≤0.40%, Cu≤0.10%, Mn≤0.10%, Zn≤0.10% and surplus are the ratios of Al, take by weighing aluminium alloy ingots and magnesium ingot and join in the dry smelting furnace, be melting 2.5～4.5 hours under 710 ℃～750 ℃ conditions in temperature, obtain basic unit's alloy molten solution; Two, the basic unit's alloy molten solution that step 1 is made is that 700 ℃～715 ℃, casting speed are that 60mm/min～65mm/min, cooling water intensity are that 0.08MPa～0.15MPa and cooling water temperature are to be cast as the ingot bar that thickness is 220mm～255mm under 10 ℃～20 ℃ the condition in casting temperature, and with ingot bar mill the surface casting oxide skin, obtain basic unit's alloy ingot; Three, the basic unit's alloy ingot that step 2 is made carries out homogenizing annealing, and annealing temperature is 455 ℃～465 ℃, is incubated 18～22 hours; Four, be the ratio of Al in the mass percent Si of element in the aluminum alloy plate materials≤0.25%, Fe≤0.35%, Cu≤0.05%, Mn≤0.03%, Mg≤0.03%, Zn≤0.05%, Ti≤0.03%, V≤0.05% and surplus, take by weighing aluminium alloy ingots and join in the dry smelting furnace, be melting 2.5～4.5 hours under 710 ℃～750 ℃ conditions in temperature, obtain the coating alloy liquation; Five, the coating alloy liquation that step 4 is made is that 700 ℃～710 ℃, casting speed are that 55mm/min～60mm/min, cooling water intensity are that 0.08MPa～0.15MPa and cooling water temperature are to be cast as the coating alloy ingot bar that thickness is 240mm～270mm under 10 ℃～20 ℃ the condition in casting temperature; Six, the coating alloy ingot bar that step 5 is made carries out homogenizing annealing, and annealing temperature is 455 ℃～465 ℃, is incubated 18～22 hours; Seven, will put into the temperature that Reform of A Chain Heating Furnace is heated to the coating alloy ingot bar through the coating alloy ingot bar that step 6 is processed is 420 ℃～500 ℃, the thickness that is hot-rolled down to ingot bar through 19～24 passages is 41.7mm～42.3mm, being cut to length is 1420mm～1480mm again, get blank, and blank is down to room temperature, obtain the coating alloy blank; Eight, the coating alloy blank that step 7 is obtained stacks with basic unit's alloy ingot of processing through step 3, and putting into Reform of A Chain Heating Furnace, to be heated to temperature be 420 ℃～450 ℃, be 4～7 hours heat time heating time, being hot-rolled down to thickness through 27～31 passages again is 18.2mm～22.2mm, makes composite board; Nine, the composite board that step 8 is made carries out finished products, and annealing temperature is 380 ℃～420 ℃, and be 1～2 hour heat time heating time, utilizes the straightener aligning after the taking-up, and again sawing obtains aluminum alloy composite plate for tank body of railway tanker.
The specific embodiment two: what present embodiment and the specific embodiment one were different is, is that the ratio of the Al of Mg:2.0%～2.6%, Cr:0.13%～0.30%, Si:0.02%～0.20%, Fe:0.01%～0.3%, Cu:0.01%～0.08%, Mn:0.02%～0.09%, Zn:0.01%～0.09% and surplus takes by weighing aluminium alloy ingots and magnesium ingot in the mass percent of element in the aluminum alloy plate materials in the step 1.Other step and parameter are identical with the specific embodiment one.
The specific embodiment three: what present embodiment was different from one of specific embodiment one to two is, is that the ratio of the Al of Mg:2.3%, Cr:0.2%, Si:0.11%, Fe:0.16%, Cu:0.05%, Mn:0.06%, Zn:0.06% and surplus takes by weighing aluminium alloy ingots, magnesium ingot in the mass percent of element in the aluminum alloy plate materials in the step 1.Other step and parameter are identical with one of specific embodiment one to two.
The specific embodiment four: what present embodiment was different from one of specific embodiment one to three is, smelting temperature is 720 ℃～740 ℃ in the step 1, and smelting time is 3～4 hours.Other step and parameter are identical with one of specific embodiment one to three.
The specific embodiment five: what present embodiment was different from one of specific embodiment one to four is, smelting temperature is 730 ℃ in the step 1, and smelting time is 3.5 hours, obtains basic unit's alloy molten solution.Other step and parameter are identical with one of specific embodiment one to four.
The specific embodiment six: what present embodiment was different from one of specific embodiment one to five is, the basic unit's alloy molten solution that in the step 2 step 1 is made is that 705 ℃～710 ℃, casting speed are that 61mm/min～64mm/min, cooling water intensity are that 0.1MPa～0.14MPa and cooling water temperature are to be cast as the ingot bar that thickness is 225mm～250mm under 13 ℃～17 ℃ the condition in casting temperature.Other step and parameter are identical with one of specific embodiment one to five.
The specific embodiment seven: what present embodiment was different from one of specific embodiment one to six is, the basic unit's alloy molten solution that in the step 2 step 1 is made is that 708 ℃, casting speed are that 62mm/min, cooling water intensity are that 0.12MPa and cooling water temperature are to be cast as the ingot bar that thickness is 245mm under 20 ℃ the condition in casting temperature.Other step and parameter are identical with one of specific embodiment one to six.
The specific embodiment eight: what present embodiment was different from one of specific embodiment one to seven is that the annealing temperature in the step 3 is 456 ℃～462 ℃, is incubated 19～21 hours.Other step and parameter are identical with one of specific embodiment one to seven.
The specific embodiment nine: what present embodiment was different from one of specific embodiment one to eight is that the annealing temperature in the step 3 is 458 ℃, is incubated 20 hours.Other step and parameter are identical with one of specific embodiment one to eight.
The specific embodiment ten: what present embodiment was different from one of specific embodiment one to nine is, is that the ratio of the Al of Si:0.05%～0.2%, Fe:0.03%～0.3%, Cu:0.01%～0.04%, Mn:0.01%～0.02%, Mg:0.01%～0.02%, Zn:0.01%～0.04%, Ti:0.01%～0.02%, V:0.01%～0.04% and surplus takes by weighing aluminium alloy ingots in the mass percent of element in the aluminum alloy plate materials in the step 4.Other step and parameter are identical with one of specific embodiment one to nine.
The specific embodiment 11: what present embodiment was different from one of specific embodiment one to ten is, is that the ratio of the Al of Si:0.15%, Fe:0.16%, Cu:0.02%, Mn:0.015%, Mg:0.015%, Zn:0.25%, Ti:0.015%, V:0.03% and surplus takes by weighing aluminium alloy ingots in the mass percent of element in the aluminum alloy plate materials in the step 4.Other step and parameter are identical with one of specific embodiment one to ten.
The specific embodiment 12: what present embodiment was different from one of specific embodiment one to 11 is, smelting temperature is 715 ℃～745 ℃ in the step 4, and smelting time is 3～4 hours.Other step and parameter are identical with one of specific embodiment one to 11.
The specific embodiment 13: what present embodiment was different from one of specific embodiment one to 12 is, smelting temperature is 730 ℃ in the step 4, and smelting time is 3.5 hours.Other step and parameter are identical with one of specific embodiment one to 12.
The specific embodiment 14: what present embodiment was different from one of specific embodiment one to 13 is, the coating alloy liquation that in the step 5 step 4 is made is that 703 ℃～708 ℃, casting speed are that 56mm/min～59mm/min, cooling water intensity are that 0.1MPa～0.13MPa and cooling water temperature are to be cast as the coating alloy ingot bar that thickness is 250mm～265mm under 13 ℃～17 ℃ the condition in casting temperature.Other step and parameter are identical with one of specific embodiment one to 13.
The specific embodiment 15: what present embodiment was different from one of specific embodiment one to 14 is, the coating alloy liquation that in the step 5 step 4 is made is that 705 ℃, casting speed are that 58mm/min, cooling water intensity are that 0.11MPa and cooling water temperature are to be cast as the coating alloy ingot bar that thickness is 255mm under 15 ℃ the condition in casting temperature.Other step and parameter are identical with one of specific embodiment one to 14.
The specific embodiment 16: what present embodiment was different from one of specific embodiment one to 15 is that the annealing temperature in the step 6 is 450 ℃～460 ℃, is incubated 19～21 hours.Other step and parameter are identical with one of specific embodiment one to 15.
The specific embodiment 17: what present embodiment was different from one of specific embodiment one to 16 is that the annealing temperature in the step 6 is 455 ℃, is incubated 20 hours.Other step and parameter are identical with one of specific embodiment one to 16.
The specific embodiment 18: what present embodiment was different from one of specific embodiment one to 17 is, to put into 440 ℃～480 ℃ of the temperature that Reform of A Chain Heating Furnace is heated to the coating alloy ingot bar through the coating alloy ingot bar that step 6 is processed in the step 7, the thickness that is hot-rolled down to blank through 20～23 passages is 41.9mm～42.1mm, and being cut to length is 1430mm～1470mm again.Other step and parameter are identical with one of specific embodiment one to 17.
The specific embodiment 19: what present embodiment was different from one of specific embodiment one to 18 is, to put into 450 ℃ of the temperature that Reform of A Chain Heating Furnace is heated to the coating alloy ingot bar through the coating alloy ingot bar that step 6 is processed in the step 7, the thickness that is hot-rolled down to ingot bar through 22 passages is 42mm, and being cut to length is 1450mm again.Other step and parameter are identical with one of specific embodiment one to 18.
The specific embodiment 20: what present embodiment was different from one of specific embodiment one to 19 is, the coating alloy blank that in the step 8 step 7 is obtained is stacked together with basic unit's alloy ingot of processing through step 3, and putting into Reform of A Chain Heating Furnace, to be heated to temperature be 425 ℃～440 ℃, be 4.5～6.5 hours heat time heating time, and being hot-rolled down to thickness through 28～30 passages again is 21.9～22.1mm.Other step and parameter are identical with one of specific embodiment one to 19.
The specific embodiment 21: what present embodiment was different from one of specific embodiment one to 20 is, the coating alloy blank that in the step 8 step 7 is obtained is stacked together with basic unit's alloy ingot of processing through step 3, and putting into Reform of A Chain Heating Furnace, to be heated to temperature be 430 ℃, be 5 hours heat time heating time, and being hot-rolled down to thickness through 29 passages again is 22mm.Other step and parameter are identical with one of specific embodiment one to 20.
The specific embodiment 22: what present embodiment was different from one of specific embodiment one to 21 is, the finished products temperature is 385 ℃～410 ℃ in the step 9, and annealing time is 1.2～1.8 hours.Other step and parameter are identical with one of specific embodiment one to 21.
The specific embodiment 23: what present embodiment was different from one of specific embodiment one to 22 is, the finished products temperature is 390 ℃ in the step 9, and annealing time is 1.5 hours.Other step and parameter are identical with one of specific embodiment one to 22.
The specific embodiment 24: the manufacture method of aluminum alloy composite plate for tank body of railway tanker, described manufacture method realizes according to the following steps: one, the mass percent in element in the aluminum alloy plate materials is that Mg:2.6%, Cr:0.25%, Si:0.15%, Fe:0.2%, Cu:0.08%, Mn:0.06%, Zn:0.05% and surplus are the ratios of Al, take by weighing aluminium alloy ingots and magnesium ingot and join in the dry smelting furnace, be melting 3 hours under 740 ℃ of conditions in temperature, obtain basic unit's alloy molten solution; Two, the basic unit's alloy molten solution that step 1 is made is that 710 ℃, casting speed are that 63mm/min, cooling water intensity are that 0.12MPa and cooling water temperature are to be cast as the ingot bar that thickness is 255mm under 16 ℃ the condition in casting temperature, and with ingot bar mill the surface casting oxide skin, obtain basic unit's alloy ingot; Three, the basic unit's alloy ingot that step 2 is made carries out homogenizing annealing, and annealing temperature is 462 ℃, is incubated 21 hours; Four, mass percent Si:0.20%, Fe:0.1%, Cu:0.02%, Mn:0.02%, Mg:0.01%, Zn:0.03%, Ti:0.02%, V:0.04% and the surplus in element in the aluminum alloy plate materials is the ratio of Al, take by weighing aluminium alloy ingots and join in the dry smelting furnace, be melting 3.5 hours under 730 ℃ of conditions in temperature, obtain the coating alloy liquation; Five, the coating alloy liquation that step 4 is made is that 705 ℃, casting speed are that 58mm/min, cooling water intensity are that 0.10MPa and cooling water temperature are to be cast as the coating alloy ingot bar that thickness is 250mm under 14 ℃ the condition in casting temperature; Six, the coating alloy ingot bar that step 5 is made carries out homogenizing annealing, and annealing temperature is 462 ℃, is incubated 21 hours; Seven, will put into the temperature that Reform of A Chain Heating Furnace is heated to the coating alloy ingot bar through the coating alloy ingot bar that step 6 is processed is 480 ℃, the thickness that is hot-rolled down to ingot bar through 21 passages is 42mm, and being cut to length is 1460mm again, gets blank, and blank is down to room temperature, obtain the coating alloy blank; Eight, the coating alloy blank that step 7 is obtained stacks with basic unit's alloy ingot of processing through step 3, and putting into Reform of A Chain Heating Furnace, to be heated to temperature be 440 ℃, be 6 hours heat time heating time, and being hot-rolled down to thickness through 29 passages again is 22mm, makes composite board; Nine, the composite board that step 8 is made carries out finished products, and annealing temperature is 405 ℃, and be 1.5 hours heat time heating time, utilizes the straightener aligning after the taking-up, and again sawing obtains aluminum alloy composite plate for tank body of railway tanker.
Straight, the color homogeneous of made of aluminum alloy composite board of present embodiment preparation, coating thickness is even, stable, and comprehensive mechanical property is good, and tensile strength is 185N/mm
2, Non-proportional extension intensity is 79N/mm
2, elongation after fracture is 25%, has simultaneously preferably decay resistance, is fit to make the railway tank tank body.
Claims (9)
1. the manufacture method of aluminum alloy composite plate for tank body of railway tanker, it is characterized in that: described manufacture method realizes according to the following steps: one, the mass percent in element in the aluminum alloy plate materials is that Mg:2.2%～2.8%, Cr:0.15%～0.35%, Si≤0.25%, Fe≤0.40%, Cu≤0.10%, Mn≤0.10%, Zn≤0.10% and surplus are the ratios of Al, take by weighing aluminium alloy ingots and magnesium ingot and join in the dry smelting furnace, be melting 2.5～4.5 hours under 710 ℃～750 ℃ conditions in temperature, obtain basic unit's alloy molten solution; Two, the basic unit's alloy molten solution that step 1 is made is that 700 ℃～715 ℃, casting speed are that 60mm/min～65mm/min, cooling water intensity are that 0.08MPa～0.15MPa and cooling water temperature are to be cast as the ingot bar that thickness is 220mm～255mm under 10 ℃～20 ℃ the condition in casting temperature, and with ingot bar mill the surface casting oxide skin, obtain basic unit's alloy ingot; Three, the basic unit's alloy ingot that step 2 is made carries out homogenizing annealing, and annealing temperature is 455 ℃～465 ℃, is incubated 18～22 hours; Four, the mass percent in element in the aluminum alloy plate materials is that Si≤0.25%, Fe≤0.35%, Cu≤0.05%, Mn≤0.03%, Mg≤0.03%, Zn≤0.05%, Ti≤0.03%, V≤0.05% and surplus are the ratios of Al, take by weighing aluminium alloy ingots and join in the dry smelting furnace, be melting 2.5～4.5 hours under 710 ℃～750 ℃ conditions in temperature, obtain the coating alloy liquation; Five, the coating alloy liquation that step 4 is made is that 700 ℃～710 ℃, casting speed are that 55mm/min～60mm/min, cooling water intensity are that 0.08MPa～0.15MPa and cooling water temperature are to be cast as the coating alloy ingot bar that thickness is 240mm～270mm under 10 ℃～20 ℃ the condition in casting temperature; Six, the coating alloy ingot bar that step 5 is made carries out homogenizing annealing, and annealing temperature is 455 ℃～465 ℃, is incubated 18～22 hours; Seven, will put into the temperature that Reform of A Chain Heating Furnace is heated to the coating alloy ingot bar through the coating alloy ingot bar that step 6 is processed is 420 ℃～500 ℃, the thickness that is hot-rolled down to ingot bar through 19～24 passages is 41.7mm～42.3mm, being cut to length is 1420mm～1480mm again, make blank, and blank is down to room temperature, obtain the coating alloy blank; Eight, the coating alloy blank that step 7 is obtained be stacked together through basic unit's alloy ingot that the step 3 annealing in process is crossed and put into Reform of A Chain Heating Furnace to be heated to temperature be 420 ℃～450 ℃, be 4～7 hours heat time heating time, being hot-rolled down to thickness through 27～31 passages again is 18.2mm～22.2mm, makes composite board; Nine, the composite board that step 8 is made carries out finished products, and annealing temperature is 380 ℃～420 ℃, and be 1～2 hour heat time heating time, utilizes the straightener aligning after the taking-up, and again sawing obtains aluminum alloy composite plate for tank body of railway tanker.
2. the manufacture method of aluminum alloy composite plate for tank body of railway tanker according to claim 1, it is characterized in that: smelting temperature is 720 ℃～740 ℃ in the step 1, and smelting time is 3～4 hours.
3. the manufacture method of aluminum alloy composite plate for tank body of railway tanker according to claim 1 is characterized in that: be that 705 ℃～710 ℃, casting speed are that 61mm/min～64mm/min, cooling water intensity are that 0.1MPa～0.14MPa and cooling water temperature are to be cast as the ingot bar that thickness is 225mm～250mm under 13 ℃～17 ℃ the condition in casting temperature in the step 2.
4. the manufacture method of aluminum alloy composite plate for tank body of railway tanker according to claim 1, it is characterized in that: the annealing temperature in the step 3 is 456 ℃～462 ℃, is incubated 19～21 hours.
5. the manufacture method of aluminum alloy composite plate for tank body of railway tanker according to claim 1, it is characterized in that: be the ratio of Al in the mass percent Si:0.05% of element in the aluminum alloy plate materials～0.2%, Fe:0.03%～0.3%, Cu:0.01%～0.04%, Mn:0.01%～0.02%, Mg:0.01%～0.02%, Zn:0.01%～0.04%, Ti:0.01%～0.02%, V:0.01%-0.04% and surplus in the step 4, take by weighing aluminium alloy ingots.
6. the manufacture method of aluminum alloy composite plate for tank body of railway tanker according to claim 1, it is characterized in that: the smelting temperature in the step 4 is 715 ℃～745 ℃, and smelting time is 3.2～3.8 hours.
7. the manufacture method of aluminum alloy composite plate for tank body of railway tanker according to claim 1 is characterized in that: the coating alloy liquation that in the step 5 step 4 is made is that 703 ℃～708 ℃, casting speed are that 56mm/min～59mm/min, cooling water intensity are that 0.1MPa～0.13MPa and cooling water temperature are to be cast as the coating alloy ingot bar that thickness is 250mm～265mm under 13 ℃～17 ℃ the condition in casting temperature.
8. the manufacture method of aluminum alloy composite plate for tank body of railway tanker according to claim 1, it is characterized in that: will put into 440 ℃～480 ℃ of the temperature that Reform of A Chain Heating Furnace is heated to the coating alloy ingot bar through the coating alloy ingot bar that step 6 is processed in the step 7, the thickness that is hot-rolled down to blank through 20～23 passages is 41.9mm～42.1mm, and being cut to length is 1430～1470mm again.
9. the manufacture method of aluminum alloy composite plate for tank body of railway tanker according to claim 1, it is characterized in that: the coating alloy blank that in the step 8 step 7 is obtained is stacked together with basic unit's alloy ingot of processing through step 3 and puts into Reform of A Chain Heating Furnace to be heated to temperature be 425 ℃～440 ℃, be 4.5-6.5 hour heat time heating time, and being hot-rolled down to thickness through 28～30 passages again is 21.9～22.1mm.
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| CN104480352B (en) * | 2014-12-09 | 2016-08-24 | 常州大学 | A kind of Al-Co-W alloy with alternate type lamellar microstructure feature and preparation method thereof |
| CN109022954B (en) * | 2018-09-14 | 2021-05-04 | 东北轻合金有限责任公司 | Aluminum alloy strip for spiral welded pipe and manufacturing method thereof |
| CN109402422B (en) * | 2018-11-27 | 2020-12-08 | 中广核研究院有限公司 | Aluminum-magnesium-zirconium alloy wire and manufacturing method thereof |
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