关键词: 铸坯喷丸, 430铁素体不锈钢, 表面质量, 粗糙度

Abstract: After shot blasting of 430 steel cast slab, the original scale and residual mould fluxes on the surface of casting slab can be removed, and the vibration mark depth of casting slab can be reduced by 0.13 mm. After the shot-blasting, the slab is heated by a heating furnace, there is an obvious interface between the iron scale and the substrate, which is easy to remove during hot rolling and pickling to avoid the defects of rough stripes on the surface of the cold plate caused by slag inclusion and oxidation residue, as a result show that the surface roughness of pickling plate decreased from 3.15 μm to 2.78 μm, and that of cold plate decreases from 0. 047 μm to 0.041 μm, surface quality of cold rolled plate in casting slab shot blasted shows that it is close to the slab grinding process. Shot blasting process of 430 stainless steel billet can replace grinding process.

Key words: Casting Slab Shot Blasting, 430 Ferritic Stainless Steel, Surface Quality, Roughness