For example, in maraging steels, the enrichment of nitrogen compensates for the reduction in the volume loss. Moreover, nitriding increases the surface hardness and wear resistance, and enhances fatigue. Progress in Salt Bath Technology Houghton Durferrit continually is working to advance salt-bath process technology. With this system, replenishing salts and regenerator are added to the bath via an adjustable vibrating chute from a bin located outside the plant. Plant parameters are computer controlled.
Information is displayed on a monitor and process details are documented on comprehensive reports.
Salt melts of both automated and manually operated baths are continuously desludged via filtration systems. Cooling baths also are desludged using this method. In the past, increased environmental legislation triggered innovations in salt-bath technology. The salt-bath process has been made environmentally friendly, and is in accordance with environmental and safe workplace regulations. With regard to wastes, there is a growing opinion in the chemical and other industries that it is preferable to store a small, authorized amount of toxic industrial waste rather than process such wastes, and, thereby, produce a larger amount of less toxic waste.