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气门弹簧工作时承受扭力,所以在它圆截面上的应力分布是不均匀的,从近中心的原点到边缘各点,应力逐渐递增,表面所受的应力最大,就表面各点而言,正内侧表面承受的应力最大,且受平面应力的作用,因此一旦气门弹簧表面存在缺陷,缺陷处极有可能产生最大的应力集中,从而导致弹簧的早期断裂。1气门弹簧折断的原因气门弹簧断裂的原因,除制造上存在缺陷外,使用方法不当也可能使其遭受早期损坏,常见的原因有以下几点:
When the valve spring is under torsional force, the stress distribution in its circular cross section is not uniform. The stress gradually increases from the origin near the center to the edge, and the stress on the surface is the largest. From the point of the surface, The inner surface is subject to the highest stresses and is subject to plane stresses. Therefore, once the valve spring surface has defects, it is highly likely that the defect will have the greatest concentration of stress, leading to early failure of the spring. 1 Valve spring breakage Valve spring breakage causes, in addition to manufacturing defects, the use of improper use may also make it suffer early damage, the common reasons are the following: