所属分类：常见问题 发布时间：2021-04-06 16:51:30 来源：http://www.lcnmb500.com 浏览量：
Wear resistant plate is a kind of plate product specially used for large area wear. It is a Cr7C3 carbide based alloy wear-resistant layer with volume fraction more than 50%, which is made of common steel plate, heat-resistant steel plate and stainless steel plate.
Wear resistant steel plate has high wear resistance, impact resistance, deformation and weldability. It can be directly processed into engineering parts such as steel plate, such as curling deformation, cutting, punching, etc. So what are the heating defects of hardox450 wear plate?
Overheat: the high temperature and long heating time of wear-resistant 450 liner make the grains grow up, the bonding force between grains weaken and the mechanical properties become worse.
Overburning: on the basis of overheating, the heating temperature is kept too high, the grain boundary is oxidized or melted, and cracks (scrapped) during rolling.
Decarburization: the surface carbon of raw material is oxidized and reduced, which reduces the surface hardness of wear-resistant 450 liner. Decarburization is not allowed for many alloy steels and low-alloy steels.
4. Iron scale; the higher the heating temperature and the longer the heating time, the stronger the oxidation atmosphere in the furnace, and the more oxide scale produced, resulting in the ablation and surface defects (pitting, oxide scale, etc.). ）Wear resistant 450 lining.
Uneven heating: different temperatures along the section or length of the billet lead to distortion, bending and internal tension cracking in the rolling process.
the above are the defects of hardox450 wear-resistant plate, I hope to help you. For more highlights, please pay attention to: http://www.lcnmb500.com , there will be more wonderful content.