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钢珠的硬度检验方法一般是采用抽样进行压碎和小负荷硬度试验,这种方法带有偶然性,不能保证所有钢珠都合格。为了保证所有钢珠、特别是装配在重要产品和关键部位的钢珠的硬度100%准确无误,仅对有限钢珠进行破坏性试验是不够的。为此我们对钢珠进行了大批量的机械检验分选。钢珠硬度分选的基本原理一垂直回跳分选法这种方法是将钢珠置于一定高度落到一块平滑的近于刚体的水平钢块上,发生碰撞后回跳。如果钢珠达到完全淬火状态,那么,这种碰撞可近似的看作刚体碰撞。根据能量和动量守恒定律,钢珠回跳后应该回到初始位置。如果钢珠未淬火或淬火不完全,那么,在碰撞过程中一部分能量损失在非弹性形变上,钢珠
Steel ball hardness test methods are generally used for sampling and crushing small load hardness test, this method is by chance, can not guarantee that all steel ball pass. In order to assure that all steel balls, especially steel balls assembled at important products and critical parts, are 100% accurate, it is not enough to perform destructive tests on only a limited number of steel balls. To this end we conducted a large number of steel ball mechanical inspection sorting. The basic principle of steel ball hardness sorting A vertical bounce separation method This method is to place the ball at a certain height fell to a smooth steel body near the level of steel, after the collision bounce. If the ball reaches a fully quenched state, then this collision can be approximated as a rigid body collision. According to the law of conservation of energy and momentum, the ball should return to its original position after jumping back. If the ball is not quenched or quenched incomplete, then, during the collision part of the energy loss in the inelastic deformation, the ball