1000pcs 5/16" Inch Steel Shot Slingshot Ammo Balls

Detailed production process of steel balls 1. Wire drawing (wire drawing): Stretch the wire to the required wire diameter with a wire drawing machine; 2. Heading : Put the drawn wire into the steel ball cold heading machine, and upset it into a ball embryo by the steel mold in the machine; 3. Flashing: The two cast iron grinding ball discs in the light ball machine rasps the cold heading ball embryo under pressure to remove the outer ring and two poles on the ball embryo; 4. Soft grinding: The two cast iron grinding ball discs in the soft ball machine rasps the photosphere ball embryo to grind the ball embryo to the required ball diameter and surface roughness; 5. Heat treatment: Put the ball into the heat treatment furnace to be carburized and then quenched and then tempered to make the ball have a certain carburized layer, hardness, toughness and crushing load; 6. Hard grinding: The grinding wheel disc in the grinder presses and grinds the heat-treated ball embryo to remove the black oxide layer on the surface of the ball and correct the accuracy of the ball; 7. Lapping/polishing cleaning: