Fluidized-Bed and Salt-Bath Heat Treating (AISI 4130 and 4340 Alloy Steels).

摘要

Using commercial alloy steels AISI 4130 and AISI 4340, a series of heat-treating, parametric studies were performed on specimens in both an electric fluidized-bed furnace and an electric neutral salt-bath furnace. An evaluation of heat-treating methods was performed by comparing tensile test data for the two alloy steels. Surface characterization of test specimens was performed using Auger analyses to discern effects, if any, caused by the heat-treatment method. This report presents certain test results for two significantly different heat-treating methods and places them side by side with published mechanical test data. Environmental and safety aspects of salt-bath and fluidized-bed heat treating are discussed. (ERA citation 08:055992)