Transactions of Materials and Heat Treatment

Title：Rolling process for the Ф508 mm series thinwall seamless steel tubes

Authors： He Yulin Yao Nianchun Xia Zhaochun

Unit： Jiangsu Polytechnic of Finance and Economics Shanghai University Jiangsu Tianhuai Steel Tube Co. Ltd.

KeyWords： Φ508 mm series steel pipe thinwall seamless steel tube with large diameter piercing piercing plug

ClassificationCode：TG335.71

year,vol(issue):pagenumber：2017,42(6):107-110

Abstract：

For producing seamless steel tube with large diameter and thinwall, a new rolling process was introduced to produce Φ508 mm series products with
large diameter and thinwall. Then, the piercing plug with Φ480 mm diameter and the perforated parameters were redesigned respectively, and the continuous rolling die was improved and the core rod with Φ509.6 mm diameter was added. Therefore, Φ508 mm series products with outside diameter of Φ457-Φ508 mm and wall thickness of 9.5-10.5 mm can be produced. Finally, the sizes of head and middle of tubes were relatively stable, and the internal and external surface roughness of pierced billet were improved by reducing capillary diameter, extension and wall reduction. At the same time, the wall thickness uniformity was improved, and its precision can be controlled less than ±8%.

Funds：

江苏省高等职业院校专业带头人高端研修资助项目（2016GRFX009）；淮安市科技局工业项目（HAGZ201613）

何玉林（1975-），女，博士，副教授

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