Carbon alloy structure steel continuous casting crystallizer function protection material in stainless steel rectangular billet

Abstract

The invention discloses a carbon alloy structure steel continuous casting crystallizer function protection material in a stainless steel rectangular billet, which comprises the following compositions in percentage by weight: 1.50 percent of imported carbon black, 1.20 percent of superfine graphite, 3.0 percent of high grade carbon powder, 10.0 percent of clay, 12.0 percent of cryolite, 2.0 percent of fused magnesite, 5.0 percent of fluorite barium carbonate, 3.0 percent of sodium carbonate, 10.0 percent of fluorite, 4.0 percent of wollastonite, 3.50 percent of graphite carbon and 34 percent of bentonite. When used, the function protection material has the advantages of favorable expression of the spreadability, the insulation ability and the melting performance in a crystallizer, stable and uniform heat transfer quantity in the crystallizer, satisfying the casting speed requirements in a fluctuation range, no slag strip in test slag so as to improve the phenomenon of uneven flowing in, favorable lubricating ability so as to prevent sticking breakout, no phenomena of crack, slag inclusion and slag sticking on the surface of a casting billet and favorable casting billet surface quality.

Description

technical field [0001] The invention belongs to the technical field of metallurgical auxiliary materials, and in particular relates to a functional protection material for a carbon-bonded steel continuous casting crystallizer in a stainless steel rectangular billet. Background technique [0002] With the maturity and rapid development of domestic continuous casting technology. The metallurgical industry puts the main task on vigorously developing high-quality steel products as an important part of development. In the process of continuous casting of high-quality special steel, necessary measures must be taken to ensure the quality of the product. Due to the addition of alloy content to high-quality special steel, the inclusions in molten steel increase, so functional protection materials are required to have strong The ability to absorb inclusions, and after the functional protection material absorbs inclusions, the physical and chemical properties can still meet the contin...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a continuous casting crystallization of carbon-bonded steel in stainless steel rectangular blanks which solves the problems of bonding and poor lubrication on the surface of carbon-bonded steel in cast stainless steel, resulting in bonded breakouts, longitudinal cracks and depressions on the surface of casting slabs, and the quality of sticky slag. Functional protective material