Manufacturing Process Of Small Steel Balls

Release time：2021-10-12

A simple production process of steel ball  

Ball forming → ring removal → rough grinding → soft grinding → heat treatment → ball forming → smooth ball (or file cutting → soft grinding)→ hard grinding → fine grinding → fine grinding (or polishing)→ super grinding.  

Two, steel ball detailed production process  

1. Stretching (wire drawing) :  

Draw the wire to the required wire diameter with a wire drawing machine;  

2. Cold and hungry (forging) :  

Put the drawn wire into the steel ball cooling machine, and make the ball embryo by the steel die hoe in the machine;  

3. The ball:  

Two cast iron grinding round plates in the polishing machine press and file the cold hoe ball embryo to remove the outer ring and pole points on the ball embryo.  

4. Soft ball:  

Two cast iron ball grinding round plates in the soft ball machine file the smooth ball to grind the ball to the required ball diameter and surface roughness;  

5. Heat treatment:  

The ball is loaded into the heat treatment furnace to be carburized after quenching and tempering so that the ball has a certain carburizing layer and hardness, toughness and crushing load;  

6. Then grinding:  

In order to remove the black oxide layer on the surface of the ball and correct the precision of the ball, the grinding wheel circular plate in the grinding machine grinds the heat treated ball blank under pressure.  

7. Fine grinding/polishing cleaning:  

Finishing: grind the ball embryo in the finishing machine, so that the ball can achieve the required precision and finish;  

Polishing and cleaning: Pour the ball into the polishing barrel and rotate it and clean the ball with polishing cleaning agent and water to make it clean and bright;  

8. Appearance selection:  

Use manual visual inspection to check whether there are any defects on the surface of the steel ball, and use micrometer to measure the roundness, batch diameter variation and surface roughness meter to test the surface roughness as the final inspection;  

9. Packing:  

The steel balls/stainless steel balls/bearing balls are coated with anti-rust oil and packed in cartons or woven bags.