SU1540913A1 - Tool for two-transition reeling of ring-type forgings with internal flanges - Google Patents

Abstract

The invention relates to the processing of metals by pressure, in particular to a tool for rolling ring forgings with internal flanges in two transitions. The purpose of the invention is to reduce metal consumption by reducing the internal bore of the workpiece and increasing the capacity of rolling by eliminating the need to reduce the speed of the radial feed of the rolls at the beginning of rolling. A billet in the form of a ring is placed between the inner 1 and outer 2 rollers of the first transition and rolling is carried out. The semi-finished product is rolled between the inner and outer rolls of the second junction. The depth of the stream for forming a flange on the roll 1 of the first transition is less than the depth of the stream on the roll of the second transition by an amount of 0.05 ... 1.00 depth of the stream on the roll of the second transition. On the roll 1, the width of the brook is 1.05 ... 1.25 times greater and the angle of inclination of the outer generatrix is 10 ... 30 ° larger than on the roll of the second transition. The tool reduces the metal consumption by reducing the diameter of the otter of the workpiece. 3 il.

Description

width of the widest part of section B 105 mm, 1 25 mi ribs, including internal

the radial height of the wide part of the section mm and the radial height of the flange mm.

According to the conditions of strength, the diameter of the neck of both rolls is mm.

The configuration of the outer surface of the roll of the second transition must correspond to the configuration of the inner surface of the forging and, consequently, the dimensions of the stream for forming the flange must correspond to the dimensions of the flange on the forging. The outer diameter of the roll is + 2h 266 mm.

The depth of the stream for forming a flange on the roll of the first transition is less than the depth of the stream on the roll of the second

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and outer rolls of the first and second transitions, having streams for forming a flange, characterized in that, in order to reduce metal consumption and increase productivity at the beginning of rolling, the depth is a stream for forming a flange on the inner roll of the first transition less than the depth of the stream on the second transition roll by that is 0.05–1.00 in the depth of the stream on the inner roll of the second transition, the width of the stream on the roll of the first transition is 1.05–1.20 times greater and the angle of inclination of the outer generatrix of this roll is 10–30 ° larger than the corresponding values on the inner roll of the second transition.

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Claims (1)

Claim Tool for two-junction rolling of annular forgings with internal flanges, including internal and external rolls of the first and second transitions, having streams for shaping the flanges, characterized in that, in order to reduce metal consumption and increase productivity at the beginning of rolling, the depth of the stream for forming flanges on the inner the roll of the first transition is less than the depth of the stream on the roll of the second transition By a value of 0.05-1.00 The depth of the stream on the inner roll of the second transition, and on the roll of the first The width of the stream is 1.05-1.20 times greater and the angle of inclination of the outer generatrix of this roll is 10-30 ° greater than the corresponding values on the inner roll of the second transition.