农用收割机滚筒用440MPa冷轧钢带的研发与制备
Development and Preparation of 440 MPa Cold Rolled Steel Strip for Agricultural Harvester Roller
魏兵兵 1孙乾 2张波 3刘智广 2杨希国 2李承2
作者信息
- 1. 山东钢铁股份有限公司莱芜分公司 运营管理部,山东 济南 271104
- 2. 莱芜钢铁集团银山型钢有限公司,山东 济南 271104
- 3. 山东钢铁股份有限公司莱芜分公司 焦化厂,山东 济南 271104
- 折叠
摘要
针对农用收割机滚筒制造用钢提出的母材均质化、高强度、易成型的质量提级需求,采用低碳、低硅、高锰,加铌、钛的微合金化成分设计,配合控轧控冷及罩式退火工艺,成功研制开发了农用收割机滚筒用440 MPa冷轧钢带.所得冷轧退火钢带组织以铁素体+点状(部分球状)渗碳体为主,屈服强度≥350 MPa,抗拉强度≥450 MPa,断后伸长率≥27%,钢带综合性能较好,保证强韧性的基础上,兼顾较好的折弯成型及焊接性,实现了低成本、高性能农用车制造专用钢带的批量制备,满足农用收割机滚筒制造加工要求.
Abstract
In order to meet the demand of homogenization,high strength and easy forming of the base metal,the 440 MPa cold-rolled steel strip for agricultural harvester drum was successfully developed by using the micro-alloying composition design of low carbon,low silicon,high manganese,plus niobium and titanium,combined with the controlled rolling and cooling and the cover annealing process.The obtained cold-rolled annealed steel strip is mainly composed of ferrite+point-like(partially spherical)cementite,with yield strength is more than 350 MPa,tensile strength is more than 450 MPa,elongation after fracture is more than 27%.The overall performance of the steel strip is good,and on the basis of ensuring strength and toughness,good bending and weldability are taken into account.The production of low cost and high performance special steel belts for agricultural vehicle manufacturing can meet the requirements of agricultural harvester drum manufacturing and processing.
关键词
收割机滚筒/440MPa冷轧钢带/控轧控冷/金相组织/力学性能Key words
harvester roller/440 MPa cold rolled steel strip/controlled rolling and cooling/metallographic structure/mechanical property引用本文复制引用
出版年
2024
NETL
NSTL
万方数据