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消除不锈钢厚壁管冷加工后的内应力,提高其屈服强度和抗疲劳性能
栏目:行业动态 发布时间:2021-06-10

浙江风采网18-8GENIEAOSHITIBUXIUGANGHOUBIGUANDERECHULITONGCHANGYOUSANZHONGXINGSHI:XIAOCHUYINGLICHULI、GURONGCHULIHEWENDINGHUACHULI。

减压治疗有两种方式。一是消除不锈钢厚壁管冷加工后的内应力,使厚壁管的屈浙江不锈钢管厂家服强度和疲劳强度在延伸率不发生显著变化的情况下得到很大提高:应力消除可以在较低的温度下进行,一般为250-425,一些数据介绍了常用的工艺为300-350,保温1-2小时,另一些则推荐工艺为200-250,保温8小时退火。对于不含钛或铌的不锈钢厚壁管,以及含钛或铌但未经稳定化处理的钢,消除应力处理的温度不得超过450,以避免厚壁管因碳化铬沉淀导致固溶体铬贫化而对晶间腐蚀敏感。

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