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Electroslag remelting slag for smelting plastic mould steel and preparation method thereof

A plastic mold steel and electroslag remelting technology, which is applied in the field of smelting slag and its preparation, can solve the problems of high viscosity and low gas permeability, and achieve the effects of reducing pollution, high purity, and improving thermal efficiency and electrical efficiency

Inactive Publication Date: 2013-08-07
武钢集团有限公司
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Problems solved by technology

[0006] The purpose of the present invention is to solve the shortcomings of the electroslag remelting slag used in the existing plastic mold steel, and provide a kind of electroslag used for smelting plastic mold steel with high viscosity and low gas permeability, thereby improving the purity of plastic mold steel Remelting mold flux and preparation method thereof

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  • Electroslag remelting slag for smelting plastic mould steel and preparation method thereof
  • Electroslag remelting slag for smelting plastic mould steel and preparation method thereof
  • Electroslag remelting slag for smelting plastic mould steel and preparation method thereof

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Embodiment Construction

[0024] The present invention is described in detail below:

[0025] Table 1 is the value list of each embodiment of the present invention and comparative examples;

[0026] Table 2 is the main process parameter list of each embodiment of the present invention and comparative example;

[0027] Table 3 is the list of the purity situation of the plastic mold steel that implements each embodiment of the present invention and comparative example;

[0028] Table 4 is a list of the mechanical properties of plastic mold steels smelted in various embodiments of the present invention and comparative examples.

[0029] Each embodiment of the present invention is produced according to the following steps:

[0030] 1) Combine the above raw materials: CaF 2 : 30~45%, Al 2 o 3 : 20~30%, CaO: 20~30%, SiO 2 : 5 ~ 10%, including the added MgO ≤ 5%, mixed evenly;

[0031] 2) Bake the mixed material at a temperature of 1650-1750°C for 180-240 minutes;

[0032] 3) Carry out slag melting, a...

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Abstract

The invention discloses an electroslag remelting slag for smelting plastic mould steel. The slag comprises the following raw materials by mass percent: 30-45% of CaF2, 20-30% of Al2O3, 20-30% of CaO and 5-10% of SiO2. A preparation method comprises steps of: uniformly mixing the added raw materials; roasting; slugging; and standby applying. The viscosity of the electroslag remelting slag can be increased, the air permeability of the electroslag remelting slag can be lowered, moreover, the environmental pollution can be reduced, and the thermal efficiency and electrical efficiency of electroslag remelting are increased; and the plastic mould steel is remolten by an electric furnace and an electroslag furnace, has the thickness of 100-300 millimeters, has high purity, low sulphur content, less non-metallic inclusions, smooth steel ingot surface, uniform and dense crystallization and uniform metal tissue and chemical ingredients, and can fully satisfy market requirements.

Description

technical field [0001] The invention relates to smelting slag and a preparation method thereof, in particular to electroslag remelting slag used for smelting plastic mold steel and a preparation method thereof. Background technique [0002] In recent years, mold products continue to develop in the direction of large, precise and complex, the comprehensive technical content is constantly improving, and the mold manufacturing cycle is constantly shortening, which promotes the rapid development of the plastic mold industry. Since plastic mold steel is generally used under quite complicated working conditions, the performance requirements for mold steel materials are also quite strict. [0003] Plastic mold steel widely used at present is produced by converter smelting or forging. The plastic mold steel produced by converter smelting is limited by the compression ratio of the continuous casting slab, that is, only plastic mold steel with a thickness of less than 100mm can be pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B9/18
Inventor 熊涛熊玉彰张云燕董汉雄王世森张新宇洪君李德发梁宝珠王建明陈勇王孝东余宏伟李银华李伟
Owner 武钢集团有限公司
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