SU1159704A1 - Method of forging discs - Google Patents

Abstract

THE DISC WAYS METHOD by pre-settling the billet with the formation of double-sided central projections bounded by the spherical surface part and the flat peripheral part, and the final precipitation of the obtained semifinished product, characterized in a flat peripheral part, the height of which is 1.2-1.6 the height of the finished disc, the central protrusions having a diameter, composition yuschy 0.5-0.7 diameter of the finished disc, and a height equal to the height of 0.2-0.5 finished disc. ate; 0 Nj Figure 1

Description

The invention relates to the processing of metals by pressure, namely, forging, and can be used in heavy and power engineering.

The purpose of the invention - improving product quality by eliminating the formation _h constrained deformation zones in the product.

In FIG. 1 shows the workpiece after preliminary precipitation; in FIG. 2 - the same after the final precipitation.

The forging method is as follows.

After heating to the forging temperature, the preform is preliminarily deposited on spherical concave plates to a height of the flat part of the forging equal to 1.2-1.6 of the height of the disk, and a central convex part of the forging with a height of 0.2.0.5 height and a diameter of 0 is obtained. 50.7 diameter disc.

Next, the forging is precipitated on a flat head to the final size. Preliminary sludge leads to intense deformation of the central part of the forging with simultaneous imaginative disk contributes to the formation of zones of difficult deformation in the canvas. Draft with the formation of central protrusions with a height of more than 0.5 to 5 of the height of the finished disk leads to the formation of an annular clamp, and the formation of a convex part with a height of less than 0.2 of the height of the finished disk does not provide intensive forging in 10 contact areas of the disk. Sediment with the formation of central protrusions, the diameter of which is more than 0.7 and less than 0.5, does not prevent the formation of eons of difficult deformation.

1G

Example .. Forged a disk with a diameter of 1250 mm and a height of 335 mm from alloy EI698. Preliminarily, an ingot weighing 6 2 2 tons is bilited to a diameter of 620 mm; a blank, 1390 mm long, is cut down. Preliminary settlement is carried out on spherical concave plates up to a height of the flat part of the forging 450 mm. Moreover, the diameter of the 25 convex part is 770 mm., And its height

165 mm. Then the forgings are deposited on flat boards to the forging dimensions D _fl = 1250 mm and H _p = 335 mm. As a result of intense deformation of contact zones of inhibition in the formed convex parts A

And In (figure 2). The final draft with a flat striker provides intense metal in the contact zones receive a forging with a uniform fine-grained structure in the entire volume.

deformation of the convex parts of the forks and the invention in comparison with lime, which helps to improve the quality of products.

this method provides for obtaining products with a uniform fine-grained

Preliminary draft up to height structure and high quality

Fi.2

VNIIIPI Order .3642 / 1 1 Circulation 647 Subscription

FPPPP PPP Patent, Uzhgorod, Project 4,

Claims (1)

METHOD FOR FORGING DISKS by pre-settling the workpiece with the formation of bilateral central protrusions limited by part of the spherical surface and the flat peripheral part, and final settlement of the obtained semi-finished product, characterized in that in order to improve the quality of the products by eliminating the formation of zones of difficult deformations, during preliminary settlement semi-finished product with a flat peripheral part, the height of which is equal to 1.2-1.6 of the height of the finished disk, with central protrusions having a diameter of 0 , 5-0.7 diameter of the finished disk, and a height equal to 0.2-0.5 of the height of the finished disk. 5 FIG. 1