[1]苏大雄,朱春生,王 波.厚板管线钢DWTT性能的影响因素[J].焊管,2017,40(7):47-54.[doi:10.19291/j.cnki.1001-3938.2017.07.009]
 SU Daxiong,ZHU Chunsheng,WANG Bo.Influence Factors of Thick Plate Pipeline Steel DWTT Property[J].,2017,40(7):47-54.[doi:10.19291/j.cnki.1001-3938.2017.07.009]
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厚板管线钢DWTT性能的影响因素
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
40
期数:
2017年第7期
页码:
47-54
栏目:
工艺与设备
出版日期:
2017-07-28

文章信息/Info

Title:
Influence Factors of Thick Plate Pipeline Steel DWTT Property
文章编号:
10.19291/j.cnki.1001-3938.2017.07.009
作者:
苏大雄朱春生王 波
宝山钢铁股份公司制造管理部, 上海 201937
Author(s):
SU Daxiong ZHU Chunsheng WANG Bo
Products & Technique Management Department of Baoshan Iron & Steel Co., Ltd., Shanghai 201937, China
关键词:
管线钢加热制度TMCPDWTT韧性剪切面积
Keywords:
pipeline steel heating system TMCP DWTT ductile shear area
分类号:
TE973.1
DOI:
10.19291/j.cnki.1001-3938.2017.07.009
文献标志码:
A
摘要:
为了进一步研究轧制工艺对厚板管线钢DWTT性能的影响,以X70、X80管线钢为研究对象,在不同板坯加热制度、控制轧制工艺和控制冷却工艺条件下,对厚板管线钢进行了DWTT性能试验,统计分析了轧制工艺参数对DWTT韧性剪切面积SA的影响规律。结果表明,要保证剪切面积SA在85%以上,板坯加热温度为1 150~1 180 ℃,板坯加热时间控制在5~8 h较为合理;在高温变形的粗轧阶段,必须保证在较低的粗轧温度下采用大变形量,单道次变形量大于5%较好;在低温控轧阶段,开轧温度为740~820 ℃,终轧温度为740~780 ℃为较优选择;冷却工艺根据实际情况与控轧工艺相匹配,冷却速度为25~30 ℃/s或45~50 ℃/s,开冷温度为720~800 ℃,终冷温度为450~550 ℃较为合理。
Abstract:
In order to further research the influence of rolling process on thick plate pipeline steel DWTT property, taking X70 and X80 pipeline steel as research object, under the condition of different slab heating system, control rolling and control cooling technology, the DWTT property test for thick pipeline steel was conducted, and the influence rule of rolling technological parameters on DWTT ductile shear area SA? was analyzed. The result showed that in order to ensure the SA over 85%, the reasonable heating temperature and time range is 1 150~1 180 ℃ and 5~8 hours respectively; during rough rolling range of high temperature deformation, It must guarantee that the large deformation is adopted at the lower roughing temperature, the single pass deformation amount is greater than 5%; In the low temperature control rolling stage, the preferable start and end finish rolling temperature range is 740~820 ℃ and 740~780 ℃ respectively; the cooling process matches the rolling process according to the actual situation, the preferable start and end cooling temperature is 720~800 ℃ and 450~550 ℃, and cooling rate is 25~30 ℃/s or 45~50 ℃/s.

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备注/Memo

备注/Memo:
收稿日期: 2017-03-30
修改稿收稿日期: 2017-06-12
苏大雄(1978—), 男, 甘肃定西人, 高级工程师,现主要从事钢铁技术管理及高等级管线钢产品的管理等工作。
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