Transactions of Materials and Heat Treatment

Title：Radial-axial rolling technology for ring with inner steps

Authors： Chen Xiaoqing Meng Ruibin Tang Jialang Wang Jinpeng Si Guizhen Guan Zhen Qiang Weitao

Unit： CNPC Baoji Oilfield Machinery Co. Ltd.

KeyWords： ring with inner steps radial-axial rolling mandrel roller design blank design finite element modeling and simulation

ClassificationCode：TG335

year,vol(issue):pagenumber：2018,43(4):94-99

Abstract：

The radial-axial rolling technology of ring with inner steps was researched by theoretical analysis and numerical simulation combined with experimental methods, and the initial rolling plan was determined. Then, the mandrel roller used for rolling of ring with inner steps was designed aiming at a gear ring. Furthermore, two kinds of ring blanks with trapezoidal and rectangular cross sections were designed, and their rolling processes were simulated and tested. The results show that the roundness and thickness uniformity of both kinds of blanks are good. At the beginning of rolling, the rolling force for blank with trapezoidal cross section is smaller, the overall trend is decreasing, and both kinds of blanks tend to be consistent along with the rolling progress. The temperature and strain distributions of rolled ring taking the blank with trapezoidal cross section are more homogeneous. Comprehensively considering the uniformity of rolling force, rolled ring geometric sizes, temperature and stain distributions, the blank with trapezoidal cross section is superior to the blank with rectangular cross section, but the former is more difficult to be produced. However, the qualified gear ring can also be rolled by taking the blank with rectangular cross section which is fitter for the radial-axial rolling process of ring with inner steps.

Funds：

宝鸡石油机械有限责任公司技术开发项目（BOMCO J28-RG04）

陈孝庆（1988-）男，硕士，工程师；E-mail：chenxiaoqing122@163.com

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