马氏体阀门钢脆断理论在冷拔生产过程中的应用

Application of Theory of Brittle Fracture in Production of Martensitic Valve Steel by Cold Drawing

马氏体阀门钢是攀长钢主要盈利品种,该文突破了“残余元素”说的限制,利用马氏体阀门钢脆断理论,通过改进坯料质量,润滑方式,制定适宜的热处理工艺等措施,有效解决了阀门钢冷拔生产过程中的脆断现象,提高了成材率。

Martensitic valve steel is a main profitable product of our company.In this paper,the theory of 'residual element' was broken through;based on the theory of brittle fracture of martensitic valve steel,the problem of brittle fracture was solved in the production of valve steel by cold drawing and the yield was increased by improvement of billet quality and lubrication method,working-out of appropriate heat treatment process.