汽车的发展要求轮胎自身重量轻、寿命长 ,这就要求其加固材料钢帘线强度高。目前生产的高强度和超高强度的钢帘线 ,由 0 .2 0～ 0 .2 5ｍｍ的细钢丝制成。这种高强度细钢丝最易分层。分层是冷变形制品发生粘脆性破坏的一种形式 ,它一般是从晶格破坏开始 ,破坏开始时钢丝上呈螺 The development of the car requires that the tire itself be light in weight and long in service life, which requires the steel cord of the reinforcing material to have high strength. The current production of high-strength and ultra-high strength steel cord, made of 0.20 ~ 0.25mm thin steel wire. This high-strength thin wire most easily layered. Stratification is a form of brittle fracture of a cold-deformed product, which generally begins with the destruction of the lattice and shows a snail on the wire at the onset of damage