SU1223639A1 - Device for hardening metallurgical balls - Google Patents

Description

1.12

The invention relates to the heat treatment of rolled products, in particular, the injection of steel melpo-balls by uniform cooling, rolling or special (furnace heating).

The purpose of the invention is to simplify the design, create convenience when servicing the device.

The drawing shows obsgiy view of the device dp hardening of metal balls.

A device for quenching metal balls contains a loading unit 1, a bath 2 with a cooling medium. Above the level of which is located, the first truncated cone. 3, The angle to the clone forming a cone 3 sos gavlkett 30-75 °. A spiral hydraulic transporting tray 4j is attached to the B1 inner surface of the cone at an angle of 2–7 to the horizontal plane, and to it a pipe 5 for supplying cooling media embedded in the upper turn of the tray h. .

The device works as follows.

 A metal ball 8 at 800-950 ° C. After rolling or special heating along the loading chute 1 is fed to tray 4, located in a cone 3 with a slope of 2-7, and is transported along it by rolling in a flow of tyudy. which enters through pipe 5 at a pressure of 2-3 atm from the factory network. The stream of water washes the balls and knocks a steam cube out of them, which provides for more intensive cooling and separate transportation in honousness. After exiting the cone, the balls in the ffl tray 7 are transferred; on an inclined depot1 conveyor 6, which transports the chute 9 into the DISPOSAL

Editor O. Strelnikova

Compiled by L, Coolr.g-dan

Tehred IOB-reg-Corrector DsOruchuar

Order 3606 / 1T-iipa: .549Subscribing

VNIISH State Committee of the USSR

by delimitations to the discoveries 113035e Moscow, Zh-35, (augaska cab., d 4/5

11ronzdrstvennoe} yu p (, 1L1 graphic pre; mg1; i; t is::,. Uzhgorod, Proektna st., 4

The ball is produced on an inclined conveyor 6.

The angle of inclination of the generatrix of a cone beyond BiicJsT. From the diameter of the hardened ball, i.e. the larger the diameter of the ball, the greater the required cooling time, therefore, the pain of the NSh is the length of the tray, and the angle of inclination of the generatrix of the cone must be maximal. The angle of inclination of the tray is chosen depending on the ability of the cooling medium to move within 1-10 m / s, which allows for intense cooling of the balls during quenching. Increasing the tilt of the tray by more than 7 and collecting over 75 ° is not required, since TC will lead to an increase in the speed of dvzhepik water and reduce the quenching time, and a decrease in the slope of the tray. less than 2 and forming less than 30 ° can lead to a decrease in the water velocity and an increase in the dimensions of the device, - h; -o is also not desirable.

The invention provides the possibility of accessing the quenching device without stopping the operation of the mill when it enters the tray of defective luapa.

The use of hydrotransporting and cone coning significantly upUnOnoet the device design for c-hvt-stopping its mechanism, while providing uniform cooling, as due to pressure of the ball in the flow of cooling HMj.iKf; and uniform hardening of the ball and there is a section -; :); the first transportation of the balls, which excludes the occurrence of staining on the surface of the ball, and the increase in time -1 is found, e1B1 balls in the quenching zone. ukl.kl.chivaet hardenability and, therefore, increases the wear resistance of the ball.

Claims (1)

DEVICE FOR HARDENING OF METALLURGICAL BALLS, containing a bath with a cooling medium, a conveying mechanism made in the form of a truncated cone, with the smaller base facing down, and a spiral tray mounted on the inner surface of the cone, a loading tray, an unloading conveyor located in the bath, n cooler supply system with a nozzle, characterized in that, in order to simplify the design and maintenance of the device, the cooler supply nozzle is integrated tangentially in the initial turn of the spiral tray, and the last one mounted at an angle of 2 ~ 7 to the horizontal plane, the angle of inclination of the generatrix of the cone is 30 ~ 75 ° with the horizontal plane, while the cone is installed above the level of the cooling medium of the bath,] 22 36 39 _v