Processing craft:

1.Electric Arc Furnace

2.Electric Slag remelting

3.One-piece forging

4.Spheroidizing

5.Rough machining

6.Semi-finishing

7.Testing,marking NC

8.Vacuum or salt-bath quenching

9.tempering three times to eliminate internal stress

10.Plane grinding and hole

11.CNC turning face

12.Line cutting keyway

13.Quality testing

14.storage