对40Cr圆钢表面开裂试样进行分析，发现圆钢裂纹处金相组织正常，开裂不是由于夹杂物及不良组织造成，表面划伤是造成圆钢表面裂纹的主要原因。可以通过加强导卫及辊道的检查等措施，消除表面裂纹的发生。
The sample surface cracking from 40Cr circle steel was analyzed, and it is concluded that the metallurgical structure of cracking place is normal; the cracking is not caused by inclusions and bad tissues; it is the scratch surface that cause the cracking. By means of strengthening roller guide, the surface cracking can be eliminated.
参考文献
| [1] | 孟瑞瑛,张建设,张江玲,荣佑亭.转炉冶炼40Cr生产圆钢的实践[J].河北冶金,2001(01):32-33,35. |
| [2] | 付作平.钢材质量因素对紧固件产品的影响[J].紧固件技术,2006(02):10. |
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