Stainless steel ball production process
Ball billet forming, to ring, coarse grinding, heat treatment, polishing, ball billet forming, the photosphere (or filing and polishing), hard grinding, grinding, lapping (or polishing), superfinishing.
Stainless steel ball is usually made of stainless steel forging process of steel ball, at this stage, commonly used stainless steel ball materials are 201, 302, 304, 316, 316L, 420, 440C.
1. stretch line (Ba Si): wire rod with wire drawing machine to the required line diameter;2. cold heading (forging): the wire will be pulled into the steel ball cold heading machine, from the machine die steel ball into the ball embryo;3. ball: two pieces of iron ball machine of the grinding ball plate will be heading ball pressure rasion loop removal of cotyledons, embryo and two pole ball;4. soft ball: two pieces of soft iron ball machine in the circular grinding ball will make the ball ball ball have rasion guy into a required ball size and surface roughness;5. heat treatment: the ball into the heat treatment furnace, carburizing, quenching and tempering, so that the ball has a certain degree of carburizing and hardness, toughness and crushing load;6. hard grinding: the grinding wheel in the grinding machine can grind the ball by heat treatment to remove the black oxide layer on the ball surface and correct the accuracy of the ball;7. lapping / polishing cleaning: grinding: grinding ball lapping machine in the embryo in fine grinding, the ball reaches the precision and smoothness of finished products required; polishing cleaning: the ball into the barrel to rotate and polishing with polishing cleaning agent to clean water cleaning ball;8. appearance selection: inspect the surface of the steel ball by manual inspection, measure the roundness with the micrometer, change the batch diameter, and check the surface roughness with the surface roughness tester as the final check;9., packing: steel ball / stainless steel ball / bearing steel ball coated with antirust oil, after loading carton or woven bag after packing.
