Production method for cast steel brick

Abstract

The invention discloses a production method for a cast steel brick. The production method comprises the following procedures: (1) crushing of raw materials; (2) preparation of a mud material: carrying out preparation, mixing and grinding according to the proportions of the raw materials, wherein a granular material, a binder and fine powder are successively added, and the binder is an organic binding agent; (3) molding and drying: designing a steel pressing die according to the shape of a brick in a picture offered by a client, pressing the mud material to form an adobe by using a press, with macro porosity of the adobe controlled in a range of 25 to 30%, and pushing the adobe into a tunnel-type drier for drying at 130 to 240 DEG C for 24 to 30 h; (4) sintering: sintering the adobe in a tunnel-type sintering kiln in a weak oxidation atmosphere at 1, 500 to 1, 550 DEG C, wherein heat preservation time for sintering is controlled to be 6 to 9 h; and (5) inspection and delivery: inspecting produced bricks one by one according to requirements on the size and appearance prescribed in the brick picture offered by the client and carrying out sampling observation on the physical and chemical indexes of the finished bricks in batches.

Description

technical field [0001] The invention belongs to the field of high-quality shaped refractory products of refractory materials, and in particular relates to a poured steel brick for producing high-grade special alloy steel. Background technique [0002] At present, most of the cast steel bricks used in the production of alloy steel are mullite cast steel bricks. Mullite cast steel bricks are made of high-quality bauxite as the main raw material, and a small amount of mullite and alumina are first introduced into the matrix of the bricks. And kaolin, the production process is as follows: raw material crushing - mud preparation - molding - drying - firing - inspection - storage - delivery. The production method has easy-to-obtain raw materials, relatively low production cost, strong corrosion resistance and good thermal shock stability. However, according to user feedback, mullite cast steel bricks are difficult to meet the requirements of ultra-high temperature resistance, hig...

AI Technical Summary

Problems solved by technology

However, according to user feedback, mullite cast steel bricks are difficult to meet the requirements of ultra-high temperature resistance, high corrosion resistance, high strength and good thermal shock stability for special alloy steel mold casting. For example, German users want to produce higher High-grade alloy steel is needed, and we hope that merchants will develop, produce and provide higher-grade poured steel brick products