Bearing steel pipe production process
The invention relates to a bearing steel pipe production process which comprises the following steps: S1, cutting: cutting a bar into a plurality of pipe blanks with the same length; s2, heating is conducted; s3, salt spreading is conducted, specifically, salt spreading treatment is conducted on the...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention relates to a bearing steel pipe production process which comprises the following steps: S1, cutting: cutting a bar into a plurality of pipe blanks with the same length; s2, heating is conducted; s3, salt spreading is conducted, specifically, salt spreading treatment is conducted on the surface of the pipe blank heated in the S2; s4, perforating; s5, annealing; s6, cold rolling; s7, stress relief annealing is carried out; s8, acid pickling; s9, cold drawing; s10, spheroidizing annealing is conducted; s11, straightening is conducted; s111, flaw detection is carried out; s12, marking is carried out; and S13, warehousing. Friction force generated between the pipe blank and the guide plate during punching can be reduced, and the effect of reducing the possibility of abrasion of the surface of the pipe blank is achieved.
本申请涉及一种轴承钢管生产工艺,其包括如下步骤:S1、切割,将棒材切割成多个长度相等的管坯;S2、加热;S3、撒盐,对S2中加热过后的管坯的表面进行撒盐处理;S4、穿孔;S5、退火;S6、冷轧;S7、去应力退火;S8、酸洗;S9、冷拔;S10、球化退火;S11、矫直;S111、探伤;S12、标记;S13、入库。本申请能够减小管坯在穿孔时与导板之间所产生的摩擦力,具 |
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