A kind of high manganese high aluminum steel mold powder containing ferric oxide and its application

A technology of ferric oxide and mold slag, applied in the field of iron and steel smelting and continuous casting, can solve the problems of deterioration of lubrication and control of heat transfer, achieve good physical and chemical properties, ensure fluidity, and inhibit the effect of slag-steel reaction
CN107470576BActive Publication Date: 2019-11-01CENT SOUTH UNIV
7 Cites 2 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
CENT SOUTH UNIV
Publication Date
2019-11-01

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
Patent Text Reader

Abstract

The invention discloses high manganese and high aluminous steel continuous casting covering slag containing ferric oxide and application thereof. The covering slag comprises, by mass, 22%-32% of CaO, 19%-29% of Al2O3, 10%-16% of SiO2, 2%-8% of MnO, 6%-12% of Na2O, 2%-6% of Li2O, 4%-12% of BaO, 7%-13% of F, 2%-10% of Fe2O3, 1.3%-2.3% of (CaO+BaO) / Al2O3 and 0.2%-0.9% of Fe2O3 / SiO2. By adding a proper amount of the Fe2O3 in a controlled mode, the covering slag with the low viscosity and good crystallization property is obtained. The covering slag is applied to the high manganese and high aluminous steel slab continuous casting production process, the slag-steel reaction happening in the continuous casting process can be effectively restrained, the crystallization property and lubricating property of the covering slag in the continuous casting process are changed to be more stable, the effect that the high manganese and high aluminous steel continuous casting process can be executed smoothly is guaranteed, and the surface quality of a poured high manganese and high aluminous steel casting blank is excellent.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the field of iron and steel smelting and continuous casting, and relates to a mold powder for continuous casting of high-manganese and high-alumina steel with good physical and chemical properties and small slag-steel reaction degree. Background technique

[0002] With the development of the automobile industry and energy industry, Al is added to steel as an alloying element, and steels with high aluminum content have become a research hotspot, such as TRIP steel and TWIP steel, which are a new generation of advanced high-strength steels and are widely used in the automotive industry; Due to the active chemical properties of Al at high temperature, the Al in the high-alumina molten steel will interact with the SiO in the mold slag. 2 wait for the reducing substances to undergo a redox reaction, SiO 2 The large consumption of slag will cause the alkalinity of the mold residue (CaO / SiO 2 ) increased sharply, while the Al in the...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More