缓冲器缸筒成形工艺

Buffer Cylinder Forming Process

针对缓冲器缸筒产品结构特点及性能要求,结合热冲压(挤盂+热变薄拉深)及冷变薄拉深成形工艺的特点,对缓冲器缸筒成形工艺方案,热冲压(挤盂+热变薄拉深)毛坯的形状和尺寸,热冲压(挤盂+热变薄拉深)及冷变薄拉深成形工艺等关键技术问题进行了研究。试验结果表明采用热冲压(挤盂+热变薄拉深)和冷变薄拉深相结合的工艺方法对缓冲器缸筒进行成形加工高效而经济,比传统热冲压后机械加工的成形工艺原材料利用率提高25%左右,同时所生产的产品尺寸稳定,力学性能一致性好。

According to the buffer cylinder product structure characteristics and performance requirements, combining the characteristics of hot stamping and cold ironing, key technical problems about the buffer cylinder forming process scheme, hot stamping blank shape and size, hot stamping forming process（punching@hot ironing） and cold ironing forming process（punching-r-cold ironing） were studied. The experimental results show that the combination of hot stamping and cold ironing on buffer cylinder forming is efficient and economical. The raw material utilization will increase about 25 % than the process of tra ditional hot stamping and mechanical working. At the same time the product has stable dimension, good consistency of mechanical property.