Production method of cold-rolled steel strip for plate spring nut

The invention provides a production method of a cold-rolled steel strip for a plate spring nut, and relates to the technical field of production of cold-rolled steel strips for plate spring nuts. The production method of the cold-rolled steel strip for the plate spring nut comprises the following steps: step 1, selecting materials; step 2, cold rolling; and step 3, heat treatment. By adopting two deformation processes of a first rolling process and a second rolling process, the deformation amount is reasonably controlled so as to improve the organic property of extension and tensile property, and meanwhile, two different annealing processes of low-temperature short-process annealing and high-temperature spheroidizing annealing are cooperatively used so as to realize accurate control of extension and tensile property. 本发明提供一种板簧螺母用冷轧钢带的生产方法，涉及板簧螺母冷轧钢带生产技术领域。该板簧螺母用冷轧钢带的生产方法，包括以下步骤：步骤一、选材；步骤二、冷轧；步骤三、热处理。通过采用第一扎程和第二扎程的两次形变工艺，合理控制变形量以提高延伸和抗拉性能的有机性，同时配合使用低温短流程退火和高温球化退火两种不同的退火工艺，以实现延伸和抗拉的精确控制。