锻压技术

半闭口复杂断面型钢热展成形技术

英文标题：Hot stretch forming technology of semiclosed complex section steel

作者：罗显龙1 黄华1 罗光政1 刘相华2

分类号：TG335.19

出版年,卷(期):页码：2021,46(12):154-158

摘要：

提出一种生产半闭口复杂断面型钢的热展成形新方法，给出了其特点、关键技术和基本特征，介绍了生产工艺方案。与传统成形工艺相比，热展成形技术可利用热状态下轧件塑性好、变形抗力低的特点，获得各部位厚度不同的产品，生产出局部带有复杂结构的工件。热展成形技术已在辽宁中车轨道交通装备有限公司得到了工业应用，用于生产哈芬槽钢等12个品种的半闭口复杂断面型钢产品，累计产量已达4万吨，成材率达到94%以上，并且每吨成本可降低260元，实现了节能、减排、降低成本的目标，为生产各种变厚度复杂断面型钢探索出一条新途径。

A new hot stretch forming method for producing semi-closed complex cross-section steel was proposed, its characteristics, key technologies and essential features were given, and the production process scheme was introduced. Then, compared with the traditional forming process, the hot stretch forming technology could take advantage of the characteristic of good plasticity and low deformation resistance of rolled parts in the hot state to obtain products with different thicknesses at various positions, and the workpiece with partial complex structures was produced. Furthermore, the new hot stretch forming technology was industrially applied in

Liaoning Zhongche Rail Transportation Co.Ltd. to produce twelve varieties of semi-closed complex cross-section steel production such as Halfen channel steel. The cumulative output reached 40000 t, and the yield rate reached 94% or more. In addition, the cost per ton can be reduced by RMB 260. Thus, the goals of energy saving, emission reduction and cost reduction is achieved to provide a new way for the production of complex cross-section steel with variable thicknesses.

基金项目：

作者简介：罗显龙（1989-），男，硕士，高级工程师 E-mail：luoxlg@126.com 通信作者：刘相华（1953-）男，博士，教授 E-mail：liuxh@mail.neu.edu.cn

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