从弹带的作用及特性出发,通过研究弹带接触应力问题,得出了决定其大小的几个因素之间的关系,然后比较自润滑弹带与普通弹带在挤进过程中所受接触应力的不同,从而得出了新的结论,即自润滑弹带减小了弹带和身管间的摩擦系数,达到了身管延寿的目的。 Starting from the function and characteristics of the elastic band, the relationship between several factors that determine the size of the elastic band is studied through the study of the contact stress of the elastic band. Then the comparison between the self-lubricating elastic band and ordinary elastic band during the extrusion process Different stress, and then come to a new conclusion that the self-lubricating band reduces the friction coefficient between the elastic band and the body to achieve the purpose of life extension tube.