crack
crack
(OP)
Hi,
we have used C45 steel. we make 120 parts from different diameter but same chemical composition (C-0.45-0.50, Si-0.35 max, S-0.030 max., P- 0.030 max., Cr-0.17-0.20), but when we make a flange having dia 180 (after forging) , in which 3 dia generate 90, 110, 180. mostly on 110 dia have crack like "~" this shape. forging temperature is 1180 - 1200 degree celcius
we have used C45 steel. we make 120 parts from different diameter but same chemical composition (C-0.45-0.50, Si-0.35 max, S-0.030 max., P- 0.030 max., Cr-0.17-0.20), but when we make a flange having dia 180 (after forging) , in which 3 dia generate 90, 110, 180. mostly on 110 dia have crack like "~" this shape. forging temperature is 1180 - 1200 degree celcius





RE: crack
Seems like an internal crack. Design of the dies could be an issue.
DHURJATI SEN
RE: crack
RE: crack
Get a good lab to help you out.
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P.E. Metallurgy, Plymouth Tube