摘要
在冷拔变形后,Q235钢丝的屈服强度和抗拉强度均大幅升高,常常需要采用退火热处理方法来实现钢丝软化。采用高强脉冲电流处理冷拔Q235钢丝时,在4 s内将抗拉强度降低至700 MPa以下,在20 s内能使冷拔钢丝的力学性能基本恢复,达到650℃退火30 min的效果,是一种快速、高效的新型冷拔钢丝"热"处理方法。
The yield strength and tensile strength of Q235 steel wire raise after cold drawn, demand adopting anneal treatment to soften usually. If adopting high-density pulsing current to treat cold drawn Q235 steel wire, the tensile strength will be decreased bellow 700 MPa within 4 second, the mechanical property of cold drawn will be recovered within 20 second, it can reach the effect of 650℃ anneal within 30 rain, this is a kind of new type ＇ heat treatment＇ method for cold drawn steel wire fast and high efficiency.
出处
《金属制品》
2007年第6期31-34,共4页
Metal Products
基金
国家自然科学基金(59475056)
北京市自然科学基金项目(39621)
清华大学骨干人才计划项目(922144)
关键词
高强脉冲电流
Q235钢丝
冷拔
热处理
力学性能
high-density pulsing current
Q235 steel wire
cold drawn
heat treatment
mechanical property
