RU1786142C - Device for hardening balls - Google Patents

Abstract

SUMMARY OF THE INVENTION: the device comprises a conveyor 5 made in the form of a rotatably mounted pipe with a helical guide and a cooler supply manifold located thereon. A loading chute 4 is located at the inlet side of the conveyor, and an unloading chute 6 is at the output side. A water inlet 7 is installed underneath the conveyor side, which is connected by a pipe 8 to the chute 9 of the scale settler. The slope of the pipe 8 is 0.14-0.4.2 sludge.

Description

The invention relates to the heat treatment of metals and can be used to quench metal balls from rolling heat.

The aim of the invention is to increase productivity by eliminating stops for cleaning the water intake. .

In FIG. 1 shows the proposed device, side view; in FIG. 2 is a section AA in FIG. 1.

The device is installed behind the ball-rolling mill 1 and contains a loading tray 2, a refrigerator 3, an inclined tray 4, a quenching drum 5, a perforated tray 6, a water inlet 7 connected to the inclined pipe 8, and a chute 9 of a scale settler.

A device for hardening balls works as follows.

Balls rolled on mill 1 along the loading tray 2. The refrigerator 3 and the inclined tray 4 are fed into the quenching drum 5, the balls are rolled on the inner side of its wall, while being cooled by the quenching medium, they are moved

screw guides along the axis of the drum 5 and get into the perforated ball, the current b. the output of the balls in the hoppers.

Hardening medium with large particles - | mi primary (rolling) scale and scrap; through the holes in the tray 6 it enters the water-J receiver 7 and is fed with an inclined pipe 8 into the chute 9 of the scale settler.

Since relative to the quenching bath of the drum 5, the water intake 7 is positioned with a height gap, the spent quenching medium (water) with scale is always in the pan in an unstable state. scale and scrap do not deposit on the walls of the pallet.

The installation of an inclined pipeline at a slope of 0.14-0.4 ensures reliable removal and transportation of large particles of primary (rolling) scale and scrap from under the quenching device by the flow of spent quenching medium.

As shown by experiments conducted under production conditions, in an inclined pipeline installed with a slope of less than 0.14, large particles per

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primary (rolling). Scale from scrap settle on the walls of the pipes. A slope of the inclined pipeline of more than 0.4 without affecting the removal of scale and scrap leads to an unacceptable increase in the speed of movement of the spent quenching medium, accelerated hydroabrasive wear of the pipelines and simply for repair of pipelines of the device.

As the experience of the pilot industrial device has shown, the quenched medium with scale and scrap is discharged to the proposed devices and is always in a turbulent state, large scale and scrap do not settle on the walls of the sump and pipeline. ;

When using the proposed device for hardening balls in the technological streams of modern high-yield (6–25 t / h) sludge-tipped alloys, a large amount (0.2–0.8 t / h) of large primary particles is removed from the quenching device rolling) of scale and scrap by the spent Hardening medium without the use of pumps and manual labor and eliminates the dismantling, installation and adjustment of quenching devices associated with their cleaning from scale, downtime is reduced by 8-10% and the productivity of ball rolling complexes, the stability and quality of quenching of grinding balls are improved.

Formula ts a Ball hardening device containing a water intake, loading and unloading trays and a conveyor, made in the form of a pipe mounted with the possibility of rotation with a screw guide AND located it contains a collector, which is due to the fact that, in order to increase productivity by eliminating stops for cleaning the inlet, it is equipped with a scale sump and pipelines connecting the water inlet to the sump, while the water inlet is located on the outlet side of the pipe, and piping is 0.14: 0.4.

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 FIG. I