汽车大梁是汽车上的重要零件。它多用5～8毫米厚的钢板弯曲成变断面的槽钢形式,形状复杂,尺寸较大。汽车大梁的弯曲成形,在成批生产中,历来多是在压力机上用模具整体或分段压制。但是,中南汽车制造厂的工人同志,在毛泽东思想伟大红旗的指引下,破除迷信,敢想敢干,经数个月的艰苦奋斗,于一九六六年中创造了一种制造汽车大梁的新工艺——滚压成形工艺。 Car girder is an important part of the car. It is more with 5 to 8 mm thick steel plate bent into a cross-section of the channel form, complex shape, larger size. Car beam bending forming, in mass production, has always been more in the press with the mold or the whole section of the suppression. However, under the guidance of the Great Red Flag of Mao Zedong Thought, the workers’ comrades in Zhongnan Automobile Factory got rid of superstition, dare to think and dare to do hard work. After several months of hard work, they created an automobile girder New Technology - Roll Forming Process.