METHOD OF QUENCHING SPRING TERMINALS AND PLANT TO THIS END Russian patent published in 2012 - IPC C21D9/02 C21D1/18 C21D1/62 

FIELD: machine building.

SUBSTANCE: spring terminal heated to austenitisation temperature is quickly cooled in jet flow of quenching fluid in the range of pearlitic and martnensitic transformation temperatures of 80-120°C. Depending upon article configuration and sizes, jet flow rate is SET to make 5-15 m/s, specific flow rate is adjusted in the range of 20-60 cm³/(cm²·s) to allow part cooling rate of 100-600°C/s while quenching fluid temperature is maintained equal to 30-60°C. Terminal quenching plant comprises high-pressure pump, filter and cooling chamber housing sprayer, slide and conveyor. Shutter is arranged at sprayer outlet and connected with drive to open and close it in time and vibrate it in closed position. Sprayer inner space follows that of spring terminal with minimum clearance while conveyor provides final cooling of spring terminals in stationary quenching fluid and discharging from cooling chamber.

EFFECT: higher quality and efficiency.

2 cl, 1 ex, 3 dwg