METHOD FOR TREATING PRODUCTS FROM LOW-CARBON STEELS Russian patent published in 1996 - IPC

FIELD: mechanical engineering. SUBSTANCE: method involves providing cementation by heating product in contact with carbon-containing medium and under the action of concentrated energy flux; cooling; subjecting product covered with carburizer layer to the action of a sequence of high-frequency pulses, with product being continuously drawn under inductor and pulse time and intervals being 0.04-0.08 and 0.03-0.05 sec, specific pulse power of 20-40 kWt/cm², product motion speed of 10-30 mm/sec, number of pulses for treatment of each portion of product 3-5. EFFECT: accelerated and simplified cementation process, increased safety and enhanced reliability in operation. 2 tbl