一种汽车光亮外饰条用超纯铁素体不锈钢BA卷材基料生产工艺
By optimizing specific heat treatment and cold rolling processes, the surface defect problem of ultra-pure ferritic stainless steel used in automotive trim strips has been solved, achieving high-quality surface gloss and fineness consistency to meet the demands of the high-end market.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- GANSU JIU STEEL GRP HONGXING IRON & STEEL CO LTD
- Filing Date
- 2024-03-16
- Publication Date
- 2026-07-17
AI Technical Summary
In the production process of ultrapure ferritic stainless steel for automotive trim strips, potential defects on the surface of hot-rolled black coils are difficult to completely remove, and conventional cold-rolling processes cannot eliminate or may amplify these defects, resulting in unstable surface quality.
Appropriate heat treatment pickling, cold rolling, cold annealing pickling, cold rolling and coil polishing processes are adopted, including one-time hot annealing pickling, two-time hot annealing pickling, one-time cold rolling, cold annealing pickling, two-time cold rolling and grinding and polishing treatment. The material structure is optimized by using specific furnace temperature curves and pickling methods to control surface roughness, and the surface gloss consistency is improved by leveling and grinding and polishing processes.
It significantly improves the surface quality of ultra-pure ferritic stainless steel used in automotive trim strips, reduces the defect rate, and enhances the consistency of surface smoothness and gloss, meeting the demands of the high-end market.
Smart Images
Figure CN118122807B_ABST