SU1330188A1 - Apparatus for hardening balls - Google Patents

Abstract

The invention relates to metallurgy, and is intended for the heat treatment of metal balls. The purpose of the invention is to improve the quality of the balls by increasing the uniformity of cooling. The device comprises a chain conveyor with perforated buckets hinged on it, a tipper bucket, sinusoidal guides and a cooling device. Buckets are fixed with the ability to interact with guides. The cooling device consists of nozzles located along the conveyor from the throat side and end walls of the buckets. The pitch of the nozzles from the side of the walls of the buckets is constant, while at the different walls of the nozzle they are shifted by half-step. 3 il. (L with SAE 00 00 00

Description

113

The invention relates to metallurgy and is intended for the heat treatment of metal balls with rolling heat.

The purpose of the invention is to improve the quality of the balls by increasing the cooling uniformity.

Figure 1 shows a general view of the device, a side view with the side removed, the wall of the cooling chamber; Fig. 2 is the same, front view, with the front and rear walls of the cooling chamber partially removed; FIG. 3 is a section A-A in FIG. one.

The device for hardening balls contains a loading chute 1, a cooling chamber 2, in the upper and lower parts of which the drive 3 and tension 4 stars of the conveyor are mounted, which are interconnected by endless chains 5, to which the perforated ladles 7 are suspended by means of hinges 6, The ends of which are welded with restrictor rods to prevent the balls from the bucket 7 from rolling. The chains of the conveyor 5 are set in motion in --- (With the drive 8. The sinusoidal guides 9 are permanently fixed in the cooling chamber 2. On the front wall of the chamber cooling 2 mounted inclined nozzles 10 for supplying coolant to the mouth 11 of the bucket 7, and on both side walls - side nozzles 12, placed with the floor

H step h and. directed to the torus

tsam 13 buckets 7 for communicating the ball a reciprocating motion along the perforated bucket 7 and supplying coolant to the cooling chamber 2.

In the discharge tray 14 installed tipper 15. The device can be mounted in a horizontal position.

The device works as follows.

The ball 16 from the ball mill falls into the loading tray 1 installed on the camera body of the cooling unit 2 and is directed to the perforated bucket 7. At the same time, the chain conveyor 5 is driven by the electric drive 8 and drive 3 and tensioner 4 stars. The speed of movement of the conveyor chains 5 is adjusted in accordance with. the pace

five,

about 5 about

five

five

Q g

882

rolling so that only one ball 16 gets into each bucket 7, i.e. Single hardening of the balls was carried out. At the same time, the supply of cooling liquid to the ball 16 in the bucket 7 was turned on using inclined 10 and 12 side nozzles. The inclined nozzles 10 feed the coolant directly into the jaw 11 of the bucket 7 onto the ball 16, and with the side nozzles 12 coolant inform the ball 16 of the rolling movement along the bucket 7. Since the side nozzles 12 are located on both sides of the cooling chamber 2 with displacement and the half-steps h between them then the ball 16 in the coil 7 in the process of quenching makes a return rolling motion. When the conveyor chains 5 move, the bucket 7 with the ball 16 slides along sinusoidal guides 9, which creates rolling of the ball 16 in the bucket 7. This increases the cooling capacity and uniformity. When approaching the bucket 7 with the ball 16 to the tipper 15, the bucket 7 is screamed, and the ball 16 falls into the discharge chute 14 and is directed to the accumulation tank for self-draining.

In comparison with the known ones, the proposed device allows the piece hardening of balls to be performed, which ensures an increase in the quality of the Kalki and the uniformity of hardness over the section of the ball; provides rolling balls in the device under the influence of coolant jets, which improves the quality of quenching due to intensive and uniform cooling, and also contributes to the removal of steam by making the buckets perforated. In addition, the device has a simple design, high reliability in operation and does not require a large production area.

Thus, the device provides better quality of quenching and uniform mechanical properties.

It is of considerable interest to the national economy, i.e. allows to improve the technology of heat treatment of grinding balls, to improve their quality, thereby reducing their consumption during operation at mining processing plants.

31330

Claims (1)

Invention Formula A device for hardening balls, containing loading and unloading chutes, a chain conveyor and a cooling device, characterized in that, in order to improve the quality of the balls by increasing the uniformity of cooling, it is equipped with perforated ladles, sinusoidal guides and tilting buckets, at the same time, the buckets are fixed on the conveyor with the possibility of rotation in the vertical plane and interaction with the guides, and the cooling device is made in the form of nozzles mounted along the conveyor from the sides pharynx ladles and end walls, the side walls of face ladle nozzles are arranged on both sides of the conveyor at a constant pitch and with mutual mixing at half-step. figure 1 H A-A 12 -9 7 (puaZ Editor I. Segl Nick Compiled by G.Maksimenko Tehred I.Popovich Order 3542/28 Circulation 549Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-355, Raushsk nab., 4/5  .m .11, -n1 -mvvv- - - - --- -.- "- - Production and Printing Enterprise, Uzhgorod, Projecto st., 4 12 figs f / g Proofreader E.Roshko