巴莱水电站压力钢管用P460Q钢材焊接性试验研究

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摘要：介绍了欧标P460Q钢的特性。对于该材料的焊接性能，首先通过计算碳当量及裂纹敏感系数进行分析，然后进行了焊接工艺评定试验验证，最后通过冷卷试验、焊缝返修试验、水压试验等进行研究。

关键词：欧标P460Q；焊接性能；碳当量；裂纹敏感系数；焊接工艺评定。

Welding performance  study of P460Q steel for pressure steel pipe for  baleh hydropower station

PENG Shuiping

China Gezhouba Group Machinery and Ship Co.， Ltd.， Yichang 443002， Hubei， China

Astract： The characteristics of European standard P460Q material are described in this paper. The welding performance of this material will be studied through the carbon equivalent calculation and welding crack sensitivity coefficient analyzing， and then the welding procedure qualification will carried out to check the welding performance， and a series of tests such as the cold coil test and weld repair test， and water pressure test will be carried out for the further study of welding performance.

Keywords： European standard P460Q; welding performance; carbon equivalent; crack sensitivity coefficient; welding procedure qualification

1 序言

欧标P460Q高强钢板通常以调质状态交货，广泛用于各类工程机械，如矿山和各类工程施工用的钻机、电铲、电动轮反斗车、矿用汽车、挖掘机、装载机、推土机、各类起重机及煤矿液压支架等。（剩余3480字）