[1]何水平,于安永,石 磊,等.9Cr2Mo钢高频焊管轧辊开裂原因分析[J].焊管,2012,35(11):61-64.[doi:1001-3938(2012)11-0061-04]
 HE Shuiping,YU Anyong,SHI Lei,et al.Crack Analysis on 9Cr2Mo steel high frequency welded pipe roller[J].,2012,35(11):61-64.[doi:1001-3938(2012)11-0061-04]
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9Cr2Mo钢高频焊管轧辊开裂原因分析
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
35
期数:
2012年第11期
页码:
61-64
栏目:
经验交流
出版日期:
2012-11-28

文章信息/Info

Title:
Crack Analysis on 9Cr2Mo steel high frequency welded pipe roller
文章编号:
1001-3938(2012)11-0061-04
作者:
何水平于安永石 磊李雪峰
(新乡市凯迪轧辊有限公司,河南 新乡 453242)
Author(s):
HE Shuiping YU Anyong SHI Lei LI Xuefeng
(Xinxiang Kaidi Roller Co., Ltd., Xinxiang 453242, Henan, China)
关键词:
关键词:轧辊金相组织氢脆开裂
Keywords:
Key words: roller metallographic structure hydrogen brittleness crack
分类号:
TE973
DOI:
1001-3938(2012)11-0061-04
文献标志码:
B
摘要:
针对9Cr2Mo钢高频焊管轧辊在热处理后清洗时发生开裂的现象,通过断口形貌、金相组织、化学成分、力学性能等方法进行分析,发现断面中心靠近内表面的部位有圆形裂纹源,轧辊材料中Ni和H含量偏高,夹杂物数量较多,枝晶偏析严重,轧辊的冲击值较低。检测结果表明:9Cr2Mo钢轧辊的H含量较高,导致轧辊内部产生氢致裂纹,进而在应力的作用下发生了脆性断裂。
Abstract:
The cracking phenomenon was found in 9Cr2Mo steel high frequency welded pipe roller when cleaning after heat treatment. Through analysis by fracture appearance, metallographic structure, mechanical properties and etc, it found some round cracking original exist in the center of fracture surface close to inside surface, the content of Ni and H is high in roller material, much more inclusion, serious dendritic segregation, and low impact value of roller. The inspection results showed that the H content of 9Cr2Mo steel roller is high, which caused hydrogen induced crack, and then induced brittle fracture under the action of stress.

参考文献/References:

[1] 崔约贤,王长利.金属断口分析[M] .哈尔滨:哈尔滨工业大学出版社,1998:155-159.
[2] 邹龙江,高路斯,王兰芳. GCr15SiMn钢轴承套圈磨削氢脆致断分析[J].金属热处理,2007,32(S1):314-317.
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[4] 孙洪胜,高殿奎. 异性焊管轧辊钢脆性断裂原因及工艺改进[J].金属热处理,2011(07):118-120.
[5] 王文焱,何水平,于安永,等. 几种轧辊材料组织及耐磨性研究[J].焊管,2009,32(07):30-32.
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备注/Memo

备注/Memo:
作者简介:何水平(1963—)男,工程师,1983年毕业于南京工程学院,主要从事轧辊生产制造工作。
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