Graphs and reports for forging normalizing
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Dear sea friends, for 16Mn forgings with a tube sheet thickness of 36, are there any issues with their normalizing curve and normalizing report?
The curve must bear the signatures of the operator, reviewer, etc., as well as stamps
It has all of these; this is a partial photo
What does the original poster want to ask? Personally, I think both the time and temperature are normal, with no major issues.
1. On the graph, how is it that the time remains unchanged as the temperature rises from 70 degrees to over 300 degrees? 2. Is 2 hours of insulation time too long?
1. According to the graphs in the report, the material is introduced into the furnace at 70 degrees, and it takes nearly 2 hours for the temperature to rise to 300 degrees; this does not correspond to the curve shown. 2. How is the holding time required for normalizing 16Mn forgings determined? Is 2 hours too long for this workpiece?
According to the graph, it enters the furnace at over 400 degrees, and only then does the timing start