锻压技术

汽车座椅滑道用PCT980D钢薄板冷弯与焊接性能

英文标题：Cold bending and welding performance on PCT980D steel thin plate for car seat slides

分类号：TG142.24

出版年,卷(期):页码：2023,48(11):54-59

摘要：

研究了料厚为1.4 mm的浦项钢铁PCT980D薄板在汽车座椅滑道上应用的可行性。结合汽车座椅滑道的使用特点和要求，对料厚为1.4 mm的PCT980D钢薄板的微观组织、力学性能、弯曲性能和焊接性能等方面进行了深入研究，同时绘制了PCT980D钢的成形极限图，用于优化冲压工艺。结果表明：PCT980D钢是一种超高强度的双相钢材，微观组织由马氏体和贝氏体组成；具有良好的综合力学性能，屈服强度大于850 MPa、抗拉强度大于1000 MPa、伸长率大于10%；同时，其也能够满足滑道设计制造所需的弯曲性能和焊接性能。

The feasibility of applying PCT980D sheet for POSCO steel on car seat slides with a material thickness of 1.4 mm was studied. Then, combined with the usage characteristics and requirements of car seat slides, the microstructure, mechanical property, bending property and welding property of PCT980D steel sheet with a material thickness of 1.4 mm were studied in depth, and the forming limit diagram （FLD） of PCT980D steel was drawn for the optimization of the stamping process. The results show that PCT980D steel is an ultra-high strength dual-phase steel with a microstructure composed of martensite and bainite. Also, it has good comprehensive mechanical properties, with a yield strength greater than 850 MPa, a tensile strength greater than 1000 MPa and an elongation greater than 10%. At the same time, it can also meet the bending and welding properties required for the design and manufacturing of slide.

基金项目：

新疆维吾尔自治区自然科学基金资助项目（2022D-01C653）；太原理工大学横向项目（202207140007）；新疆维吾尔自治区“天池英才”高层次人才项目（51052300536）

作者简介：赵卓帅（1987-），男，硕士，工程师，E-mail：zhaozhuoshuai.ok@163.com

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