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Continuous casting crystallizer casting powder for 400 stainless steel

A technology of continuous casting mold and mold flux, which is applied in the field of steelmaking, can solve the problems of large vibration marks on the surface of the casting billet, subcutaneous bubbles, and poor thermal insulation, and achieve the effect of lubrication and heat transfer.

Inactive Publication Date: 2018-06-15
XIXIA LONGCHENG METALLURGICAL MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the heat preservation effect is not good, the surface vibration marks of the obtained slab are relatively large, and quality problems such as slag addition and subcutaneous air bubbles still exist.

Method used

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  • Continuous casting crystallizer casting powder for 400 stainless steel
  • Continuous casting crystallizer casting powder for 400 stainless steel
  • Continuous casting crystallizer casting powder for 400 stainless steel

Examples

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Embodiment Construction

[0024] In order to better understand the present invention, the content of the present invention is further clearly described below in conjunction with the examples, but the protection content of the present invention is not limited to the following examples. In the following description, numerous specific details are given in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without one or more of these details.

[0025] See Table 1 for the chemical composition and weight percentage of the mold powder for continuous casting mold slag used in Invention Example 400 for stainless steel.

[0026] See Table 2 for the raw materials and weight percentages of mold flux for continuous casting mold for 400 stainless steel in Example 400 of the present invention.

[0027] See Table 3 for the performance index of mold flux for continuous casting mold for stainless s...

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Abstract

The invention belongs to the technical field of steel making, and particularly relates to continuous casting crystallizer casting powder for 400 stainless steel. The continuous casting crystallizer casting powder for 400 stainless steel comprises the chemical components of, by weight percentage, 35-40% of CaO, 40-48% of SiO2, 2.0-4.0% of Al2O3, 8-10% of Na2O, 5-8% of F- and 1-2% of solid C. The chemical components of the continuous casting crystallizer casting powder for 400 stainless steel are used cooperatively, a proper smelting speed is kept while the heat preservation function is guaranteed, and an obtained casting blank is smooth in surface, regular in folding mark and free of concaves or other quality problems.

Description

technical field [0001] The invention belongs to the technical field of steelmaking, and in particular relates to a mold slag for continuous casting molds for 400 stainless steel. Background technique [0002] 400 series stainless steel is a kind of nickel-free and low-nickel stainless steel, and its formability, corrosion resistance and oxidation resistance are good. Compared with austenitic stainless steel, 400 series ferritic stainless steel has the advantages of high strength and low tendency of cold work hardening. The industry has proven that ferritic stainless steels are an excellent alternative in many applications where austenitic stainless steels were previously considered the only option. With the advancement of continuous casting technology, its related technologies have also been further developed. The shortcomings of 400 series stainless steel, such as poor toughness at room temperature and low temperature, high notch sensitivity, and sensitivity to intergranu...

Claims

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Application Information

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IPC IPC(8): B22D11/111
CPCB22D11/111
Inventor 李晓阳杜震宇赵春宝王正英梁冠东薄洪涛
Owner XIXIA LONGCHENG METALLURGICAL MATERIALS CO LTD
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