| X70钢级大径厚比热煨弯管制造工艺研究 |
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| 引用本文： | 张海波,彭立山,白雷杰,赵志伟,刘旭,巩忠旺. X70钢级大径厚比热煨弯管制造工艺研究[J]. 焊管, 2014, 37(10): 30-33. DOI: １００１－３９３８（２０１4）10-0030-04 |
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| 作者姓名： | 张海波 彭立山 白雷杰 赵志伟 刘旭 巩忠旺 |
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| 作者单位： | （渤海装备巨龙钢管管件分公司，河北 青县062658） |
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| 摘 要： | 针对X70钢级大径厚比热煨弯管的制造难点，合理改进了弯管机组设备，优化弯管成型工艺参数，精确测量和控制弯管煨制温度和速度，开发了一套完整的大径厚比弯管制造工艺，该工艺解决了大径厚比弯管成型后管体椭圆度超标和弯管综合力学性能差等问题。采用该工艺进行了单根和批量生产，产品符合伊拉克MOEP工程《弯管技术规格书》要求。
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| 关 键 词： | X70钢级 大径厚比 热煨弯管 |
Research on Manufacturing Technology for X70 Grade Large Diameter-thickness Ratio Hot Bending Bends |
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| ZHANG Haibo,PENG Lishan,BAI Leijie,ZHAO Zhiwei,LIU Xu,GONG Zhongwang. Research on Manufacturing Technology for X70 Grade Large Diameter-thickness Ratio Hot Bending Bends[J]. Welded Pipe and Tube, 2014, 37(10): 30-33. DOI: １００１－３９３８（２０１4）10-0030-04 |
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| Authors: | ZHANG Haibo PENG Lishan BAI Leijie ZHAO Zhiwei LIU Xu GONG Zhongwang |
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| Affiliation: | （Pipe Fitting Branch，CNPC Baohai Equipment Julong Steel Pipe Co.，Ltd.，Qingxian 062658，Hebei，China） |
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| Abstract: | In this article，according to the manufacturing difficulties of X70 grade hot bending bends with large diameter-
thickness ratio，it reasonably improved bends unit equipment，optimized bends forming process parameters，accurately measured and controlled the temperature and speed in bends forming process. A complete set of large diameter-thickness ratio bends manufacturing process was developed, it resolved some problems，including ovality of bends body exceeding the standard requirements，the comprehensive mechanic properties not good，and other manufacturing difficulties. It adopted the above manufacturing process to conduct single and bulk production, the products accord with the requirements of Iraq MOEP Project Technical Specification for Bending Bends. |
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| Keywords: | X70 steel grade large diameter-thickness ratio hot bending bends |
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