General question. Is there such a thing as a generally-accepted format for recording and reporting case depth analyses as determined by microhardness traverse? Conversely, is there a recommended electronic/software solution for recording and saving such data with report generation when needed...
Variations I am finding run from -.07 to +.13 from set point in one furnace. Another falls in the narrow range of .05. Three other furnaces are between these extremes. As we work to improve variations, I seek to understand a reasonable expectation of range. Targeting is adjustable through...
I am not suspicious of any natural gas issues presently. As I am comparing multiple furnaces, there does not appear to be any correlation that would indicate a general source problem. That is, variations are divergent on different units.
How much variation in actual carbon might one expect from control set point when evaluating by way of carbon shim sample?
IQ atmosphere furnaces are supplied endo-gas at 35 degree dew point and enriching gas is natural gas (no peak shaving is is expected currently). Carbon control is via oxygen...
Thank you folks. Perhaps a bit more information. The material is 8620 and it is usually metallographically evaluated after quench and temper. I find it difficult to see much visually discernable difference in microstructure below the 50 HRC depth, probably contributed to by the part's section...
I am seeking the best functional definition of TOTAL case depth. A carburiuzed and hardened part specifies a TOTAL case depth of.015"-.022". There appears to be multiple technical definitions. In my history, total case depth was determined by graphing traverse microhardness measurements...
