双面搪瓷用含钛热轧高强钢的组织和性能

Microstructure and properties of Ti-bearing hot rolled high strength steel for tow sides enamelling

简述了工业生产的一种热轧双面搪瓷专用钢的成分和生产工艺,并与一种普通的碳素结构钢进行了组织、性能对比研究。结果表明,这种搪瓷专用钢经高温搪烧后的晶粒组织仍非常细小,且基体中弥散分布着大量的Ti C、Ti_4C_2S_2等析出相。在800~890℃间进行两次高温搪烧后,其屈服强度仍可以达到342 MPa的较高水平。氢渗透试验结果表明,搪瓷专用钢的贮氢性能远优于作为对比样的普通碳素结构钢。经双面湿法搪烧后可以获得良好的搪瓷层气泡结构,并且不会出现鳞爆缺陷。

The composition and production technology of a kind of hot rolled steel sheet for two sides enamelling were briefly described,and the contrastive analysis about microstructure and properties with a kind of ordinary carbon structural steel were carried out. The results show that the grain structure of the steel for enamelling after high temperature enamel firing is still very fine,and a large number of TiC、Ti4C2S2 precipitates are dispersed in the matrix. After two times of enamel firing between 800 ℃ and 890 ℃,the yield strength of the steel for enamelling can still reach a high level of 342 MPa. The results of hydrogen permeation test show that the hydrogen storage properties of the steel for enamelling is much better than the ordinary carbon structural steel. The better bubble structure in the enamel layer can be obtained by the steel for enamelling after two sides wet enamelling and there are no fish scaling defects on the sample surface.