Super-thick aluminum alloy cast-rolled plate production method
A production method and technology of aluminum alloy, applied in the field of non-ferrous smelting, can solve the problems of insufficient rolling force, low input current power, unqualified cast and rolled plate shape, etc., and achieve uniform upper and lower structure of the plate, uniform temperature distribution and internal quality. improved effect
Inactive Publication Date: 2014-11-19
QINGHAI QIAOTOU ALUMINUM & POWER CO LTD
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Problems solved by technology
If the production exceeds the design thickness range, due to insufficient rolling force and low input current power in the technical configuration of casting and rolling equipment, it is easy to stop and damage the equipment; in terms of rolling process technology and control: due to the flow of aluminum melt Insufficient supply, nozzle assembly process, rolling process and other problems are prone to unqualified casting and rolling plate shape, coarse and uneven internal structure (grain size), resulting in unqualified products
Method used
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Embodiment 1
[0049] Such as figure 1 - Figure 5 As shown, the present invention is a production method of ultra-thick aluminum alloy cast-rolled plate, and the method includes furnace loading, batching, heating and melting, stirring and slag removal, sampling, furnace inversion, holding furnace refining, slag removal, on-line refinement, On-line degassing, filtering, casting and coiling steps, the invention is characterized by:
[0050] 1) The roll shape of the casting roll in the casting and rolling step is coaxiality<0.005mm, ellipticity<0.01mm, crown of a single roll 0.20-0.24mm, diameter difference between two rolls<1mm, roughness Ra0.7-0.8 μm;
[0051] 2) Casting and rolling nozzle: the abdominal cavity block is set between the upper fan nozzle and the lower fan nozzle to form a three-stage shunt;
[0052] 3) Casting and rolling process parameters: casting nozzle opening 26mm, nozzle roll gap 0.5mm, ear roll gap 0.7mm, roll gap ws∕ds 11.51∕11.54mm, preset rolling area 78-82mm, fro...
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Abstract
The invention relates to the technical field of nonferrous metallurgy, in particular to a super-thick aluminum alloy cast-rolled plate production method for producing aluminum alloy cast-rolled plates through a horizontal cast-rolling machine. The super-thick aluminum alloy cast-rolled plate production method includes the steps of furnace charging, batching, melting through temperature rise, stir for slagging-off, sampling, furnace discharging, refinement through a holding furnace, slagging-off, online refinement, online degassing, filtration, cast rolling and reeling-up. The super-thick aluminum alloy cast-rolled plate production method has the advantages that distribution uniformity of a cast lip is improved, and temperature distribution is uniform; Al-5Ti-1B grain refinement filament adding technological parameters are reasonably determined; all rolling technological parameters are reasonably determined; fourth, qualified 11.5 mm thick and 1550 mm wide plates are successfully cast-rolled; the optimal ratio of cold material to liquid material for batching is reasonably determined; sixth, quality defects causing instable and unqualified thick plates are overcome; seventh, the limit of rolling thickness of the original design of a cast-rolling device is broken through.
Description
technical field [0001] The invention relates to the technical field of non-ferrous smelting, in particular to a production method of an ultra-thick aluminum alloy cast-rolled plate produced by a horizontal casting-rolling machine. Background technique [0002] In the production of aluminum alloy cast-rolled sheets, the thickness of aluminum and aluminum alloy cast-rolled sheets is designed to be 5-10mm in the horizontal casting-rolling machine. If the production exceeds the design thickness range, due to insufficient rolling force and low input current power in the technical configuration of casting and rolling equipment, it is easy to stop and damage the equipment; in terms of rolling process technology and control: due to the flow of aluminum melt Insufficient supply, nozzle assembly process, rolling process and other problems are prone to unqualified cast-rolled plate shape, coarse and uneven internal structure (grain size), resulting in unqualified products. Contents o...
Claims
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IPC IPC(8): B22D11/06
Inventor 田振宏梁鲁清吴晓东唐正洪白世森张能发马有良张富民张明胜曹明泰
Owner QINGHAI QIAOTOU ALUMINUM & POWER CO LTD
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