D. E. Goodman, B. Bernard, Surface Combustion, Inc., Maumee, OH
Presenting low temperature furnaces of a metal lined construction with all of the advantages and efficiencies of an insulated furnace design without the disadvantages of insulation contamination, damage or degradation. This presentation will focus on tempering, steam treating, and vacuum processing of powder metal, steels and non-ferrous materials.
Powder metal parts have unique issues in secondary heat treating. The quench oil used in the hardening process enters the porosity of the powder metal part. This oil will be virtually impossible to wash off and as a result will create severe smoking and insulation impregnation problems during tempering.
Also, many lower temperature vacuum tempering applications have an adverse effect if any moisture or contaminants are present.
Both of the above applications as well as steam treating are better suited to this alternative furnace design.
Presenting low temperature furnaces of a metal lined construction with all of the advantages and efficiencies of an insulated furnace design without the disadvantages of insulation contamination, damage or degradation. This presentation will focus on tempering, steam treating, and vacuum processing of powder metal, steels and non-ferrous materials.
