The first step in the production of bearing steel steel ball is to stretch the wire, and the wire is stretched to the required wire diameter by a wire drawing machine; the drawn wire is placed in a steel ball cold heading machine, and the steel mold is beaten into a ball by the machine. Embryo; then the ball of light, two cast iron grinding balls in the ball machine pressurize the cold ball embryo to remove the outer band and the two poles on the ball.
Subsequently, two cast iron grinding balls in the soft ball machine honed the ball of the light ball to make the ball embryos into the required ball diameter and surface roughness; the ball was put into the heat treatment furnace for carburizing, quenching and then tempering. The ball has a certain carburized layer and hardness, toughness and crushing load.
The grinding wheel disc in the grinder pressurizes the heat-treated ball embryo to remove the black oxide layer on the surface of the ball and correct the accuracy of the ball; then the grinding ball is finely ground in the lapping machine to make the ball reach the finished product. Accuracy and finish; pour the ball into the polishing drum and clean it with a polishing detergent and water to make the sphere clean and bright.
After forming the bearing steel steel ball, it is necessary to manually check the surface of the steel ball for any flaws, and measure the roundness with a micrometer, the variation of the batch diameter and the surface roughness measured by the surface roughness meter as the final inspection; The steel ball is coated with anti-rust oil and packed in a carton or woven bag.