Ф159mm机组试制P235GH核电用无缝钢管  

Trial-production of P235GH Seamless Steel Tubes Used for Nuclear Power with Φ159 mm Tube Mill

作　　者：石晓霞[1] 刘金[1] 程正方[1] 

机构地区：[1]内蒙古包钢钢联股份有限公司技术中心

出　　处：《包钢科技》2013年第1期24-26,共3页Science & Technology of Baotou Steel

摘　　要：文章介绍了Ф159mmPQF机组试制P235GH常规岛核电用无缝钢管的生产工艺过程，通过实验室检验，屈服强度、抗拉强度、延伸率符合技术协议要求，而屈服强度与抗拉强度相对于标准要求有一定的富余量。压扁试验、扩口试验、扩环试验、管环拉伸试验都符合标准要求。在线常化与非在线常化的无缝管性能及金相组织比较，在线常化的无缝管延伸率更好，金相组织晶粒度更为细小，更为均匀。从表面质量检查结果可以看出，Ф159mmPQF机组试制P235GH常规岛核电用无缝钢管取得初步成功。In the article ,the trial -production process of P235GH seamless steel tubes used for nuclear power of conventional island with O159 mm PQF tube mill is introduced. The results of laboratory examination show that the yield strength, tensile strength and elongation all could meet the requirements of technical agreement as welt as the yield strength and tensile strength are surplus compared with the requirements of the standard. Furthermore ,the flattening test ,flaring test ,ring enlargement test as well as the test of drawing tubes and tings all could meet the requirements of the standard. Through comparing the performances and microstructure of on - line normalizing seamless steel tubes with those of non on - line normalizing seamless steel tubes ,the elongation of on - line normalizing seamless steel tubes is better as well as the grain size of microstructure is finer and more uniform. Finally, the trial - production of P235GH seamless steel tubes used for nuclear power of conventional is- land with O159 nml P0F tube mill gets to first base based on the examination results of surface quality.

关 键 词：P235GH 在线常化 PQF 

分 类 号：TG335.71[金属学及工艺—金属压力加工]