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介绍了直接热轧双相冷镦钢ML08SiMn2的成分、组织、力学性能和应用,说明了从产品性能和生产工艺出发对钢进行的设计。本文研制的直接热轧新型冷镦用双相钢ML08SiMn2,适用于按非淬火工艺制造8.8级以上的高强度紧固件。
The composition, microstructure, mechanical properties and application of the direct hot-rolled dual-phase cold heading steel ML08SiMn2 are introduced. The design of the steel from the product performance and the production process is described. In this paper, a new type of direct hot-rolled dual-phase cold heading ML08SiMn2 was developed, which is suitable for manufacturing high-strength fasteners above 8.8 in non-quenching process.