Certificates

 

WKZ006-2006         42CrMo4

Perform technical conditions: WJX048-2005

1, finishing temperature ≤950 ℃.

2, Normalized technology: 860±10 ℃, heat preservation time 1.8 min/mm;

Tempering technology: 620±10 ℃, heat preservation time 3.5 min/mm;

Annealing technology: 650±10 ℃, heat preservation time≥20 h, cooling to 350 ℃air cold out.