HQ-70钢冷裂敏感性的研究

罗志昌; 姚钦; 田燕; 张伟明; 郎毅; 侯丽

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HQ-70钢冷裂敏感性的研究
罗志昌¹, 姚钦¹, 田燕¹, 张伟明¹, 郎毅², 侯丽²
1.北京清华大学;2.鞍钢钢研所

摘要:

采用铁研试验及插销试验法对HQ-70钢的冷裂敏感性进行了研究,绘制了该钢的冷裂图,并对其冷裂敏感性作了评价.推荐该钢防止冷裂的安全预热温度为125℃。

关键词: 低合金钢高强度钢裂纹

DOI：

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基金项目:

STUDY OF COLD CRACKING SUSCEPTIBILITY OF HQ-70 STEEL

Luo Zhichang¹, Yao Qin Associat¹, Tian Yan¹, Chang Weiming¹, Lang Yi², Hou Li²

1.Tsinghua University;2.Research Institute of Iron and Steel, Anshan Corporation of Iron and Steel, Anshan

Abstract:

The cold cracking susceptibility of HQ-70 steel was studied by use of the TEKKEN test and Implant test.The cold cracking diagrams of this steel were drawn,and its susceptibility to cotd clacking was evaluated.It is suggested that the safe preheating temperature for avoiding the emergence of cold crack is 125℃.

Key words: Low alloy steel High strength steel Cracks