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A kind of aluminum alloy for aluminum adjustment and its preparation method and aluminum adjustment method

A technology of aluminum alloy and aluminum adjustment, which is applied in the field of steelmaking, can solve the problems of high labor intensity and insufficient monitoring means, and achieve the effect of reducing the aluminum content

Active Publication Date: 2021-01-08
BEIJING SHOUGANG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the steelmaking process, some steel types require high Als accuracy, and the weighing accuracy of existing equipment is difficult to meet the control of cutting accuracy. Manually add the material into the vacuum lock, but it causes the problems of high labor intensity and insufficient monitoring means

Method used

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preparation example Construction

[0024] Based on the same inventive concept, the present application also provides a method for preparing an aluminum alloy for aluminum adjustment, comprising the following steps:

[0025] Aluminum particles are selected, the aluminum content of the aluminum particles is ≥99.5%, and the particle size of the aluminum particles is 3mm-15mm;

[0026] High-purity ferrosilicon is selected, and the chemical composition of the high-purity ferrosilicon includes: Si: 76%-78%, C≤0.015%, Ti≤0.010%, S≤0.005%; the particle size of the high-purity ferrosilicon is 10-50mm ;

[0027] Select low-sulfur high-quality steel scrap, the chemical composition of the low-sulfur high-quality steel scrap includes: C≤0.0050%, S≤0.0050%, Ti≤0.0030%; the particle size of the low-sulfur high-quality steel scrap is 30-50mm;

[0028] The aluminum granules, high-purity ferrosilicon and low-sulfur high-quality steel scrap are pressed into a furnace for smelting and smelting, and then cast into an aluminum allo...

Embodiment 1

[0038] An aluminum adjustment method includes the following steps: calculating the required aluminum addition amount according to the target Als value at the end of refining, the Als value at the refining station, the 1 Als value during the refining process, the 2 Als value during the refining process, the 3 Als value during the refining process, and the analysis of the Als loss during the refining process , adding aluminum alloy; the composition of the aluminum alloy includes: Al: 10-12%, Si: 28-32%, Fe: 54-59%, C≤0.04%, Ti≤0.01%, and the rest are unavoidable impurities .

[0039] The Als content of the molten steel at the arrival station of the heat is 0.0218%, and the Als content at the end of refining is 0.0280%±0.0010%. The primary refining aluminum adjustment is adjusted according to 0.0290%. According to the calculation of 25Kg aluminum grains increased by 0.0100% Als, 18Kg aluminum grains need to be added, and 18Kg aluminum grains are set according to the calculated va...

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PUM

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Abstract

The invention provides aluminum alloy for aluminum blending, a preparation method thereof and an aluminum blending method. The aluminum alloy for aluminum blending comprises the following chemical components of, in weight percentage, 10-12% of Al, 28-32% of Si, 57-59% of Fe, less than or equal to 0.04% of C, less than or equal to 0.01% of Ti and balance inevitable impurities.

Description

technical field [0001] The invention belongs to the technical field of steelmaking, and in particular relates to an aluminum alloy for aluminum adjustment, a preparation method thereof, and an aluminum adjustment method. Background technique [0002] In the steelmaking process, some steel types require high Als accuracy, and the weighing accuracy of existing equipment is difficult to meet the blanking accuracy control. At present, for steelmaking with high Als accuracy, aluminum particles are pre-weighed manually and passed Manually adding materials into the vacuum lock, but it caused the problems of high labor intensity and insufficient monitoring means. Contents of the invention [0003] In view of the above problems, the present invention is proposed to provide an aluminum alloy for aluminum alloying, a preparation method thereof, and an aluminum alloying method that overcome the above problems or at least partially solve the above problems. [0004] An embodiment of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C35/00C22C38/02C22C38/06C22C38/14C21C7/00C22C33/06
CPCC21C7/0006C22C33/06C22C35/005C22C38/02C22C38/06C22C38/14Y02P10/20
Inventor 孙亮毕泽阳赵艳宇冀建立王建辉刘风刚刘珍童成天兵
Owner BEIJING SHOUGANG CO LTD