General technical requirements
1. Parts are descaled.
2. There should be no scratches, scratches, etc. on the surface of the part to damage the surface of the part.
3. Remove the burr flash.
Heat treatment requirements
1. After quenching and tempering treatment, HRC50～55.
2. The parts are subjected to high frequency quenching, tempered at 350 to 370 ° C, and HRC 40 to 45.
3. Carburizing depth is 0.3mm.
4. Perform high temperature aging treatment.
Tolerance requirements
1. Unfilled shape tolerances shall comply with the requirements of GB1184-80.
2. The tolerance for the length of the unfilled length is ±0.5mm.
3. The casting tolerance band is symmetrical to the basic size configuration of the blank casting.
Part corner
1. The fillet radius R5 is not marked.
2. The un-chamfered angle is 2×45°.
3. Sharp angle / sharp corner / sharp edge is blunt.
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