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Processing method:
Forging parts→rough milling→flaw detection→milled by CNC Machining center→quenching and tempering→half rough milll→ageing treatment →finish milling→inspection
Technical data:
1. Forging GOST8479-70，HB262-311，KCU>J/c㎡ hardness need to be checked every parts, each batch inspecton or samples tested for the rest of the parameters.
2. H14，h14，+—IT14/2
3. Dimenions and roughness before quenching and tempering.
4. Drawing no.and order no. marked
5. Acute angle play blunt
