SU545399A1 - Device for lubrication and cooling of multi-roll mill rolls - Google Patents

Description

one

A device for lubricating and cooling the rolls, comprising a system for supplying coolant, grooves made in the support roll, a liquid cutter mounted at the surface of the support roll (1) is known.

However, such a device does not provide intensive cooling of the outer surfaces of the roll set.

It is also known a device for lubricating and cooling rolls of a multi-roll mill, including a system for supplying coolant, cut-off devices installed at the surface of the rolls (2),

However, such a device does not allow stable and uniform cooling of the outer surfaces of the support, intermediate and work rolls, which form a closed loop along the mill axis.

In order to eliminate the above disadvantages, the cutter of the proposed device is provided with a rotary ring mounted in the groove of the support roll, preferably along the rolling axis, which is provided with an abutment that orients the cutter alternately depending on the rolling direction on the center of one of the intermediate rolls.

These design features improve the lubrication and cooling conditions of the oior, and intermediate and work roll surfaces, which form a closed loop along the mill axis.

FIG. 1 shows schematically the proposed device, a general view; in fig. 2-

A-A section of FIG. one.

A device for lubricating and cooling the rollers of the multi-roller mill, including frame 1, work 2, intermediate 3 and 4, and support 5 rolls, contains a rotary ring 6, which is freely mounted in the annular groove of the support roll 5, mainly along the rolling axis, is mounted on ring 6 cut-off 7, stop 8, installed in the frame 1.

For fixation to the extreme positions of the rotary ring 6, it is provided with supporting surfaces 9, 10.

A special system (not shown in the drawings) is installed to feed the mill during the rolling of metal 11 coolant.

The device works as follows. When metal is rolled, 11 rolls are rotated, and rolls 4 and 5 are drawn into the annular groove of the coolant flowing into the frame 1 of the mill.

The ring 6 is rotated (Fig. 1) in the direction of rotation

until the bearing surface 9 of the ring 6 is aligned with the stop 8, the cutter 7 orients at the center Oz of the intermediate roller 3, preventing the coolant from leaving the annular groove in the circumferential direction and distributing it along the surface of the rolls located inside the closed contour formed by them along the mill axis.

When reversing the mill, the cutter 7 is oriented to the center 04 of another intermediate roll 4, while the surface 10 of the ring 6 interacts with the stop 8.

The described device provides intensive cooling and lubrication of the outer surfaces of the roll set of the mill, which allows maintaining stable temperature conditions of the rolls.

Claims (2)

1. USSR author's certificate No. 398300, B 2IB 27/10, 1972. 2. The author's certificate of the USSR L 194730, cl. B 21B 13/10, 1969. ig 7 A-l ig.2