SU889264A1 - Method of producing disc forging - Google Patents

Description

one

The invention relates to the processing of metals by pressure, in particular, to methods for producing disk forgings.

A known method of making discs is by precipitating a blank in rings tn.

The disadvantage of this method is the low quality of forgings due to the formation of cracks during the precipitation process on the outer surface of the workpiece.

The purpose of the invention is to improve the quality of forgings produced.

This goal is achieved by the fact that according to the method of making forgings by upsetting the billet in the rings, after the upsetting of the billet, its outer zone is given a wavy shape in the form of corrugations with their orientation in the radial direction and the outer perimeter of the corrugations equal to the perimeter of the finished forging, then the corrugated billet placed between

plastic seals and re-slumping of the preform.

On tair. Figure 1 shows a billet after precipitation with rings and a corrugated outer zone; figure 2 - forging a disk after precipitation with flat plates with plastic gaskets.

Heated to a forging temperature, the cylindrical billet 1 is precipitated in rings, and after precipitation, the zone

to the outer contour 2 is crimped. Then, outer rings 3 and 4 of plastic material are put on the corrugated zone and the workpiece 1 is deposited between the strikers 5 and 6. When

15, the inner zone becomes lower, while the corrugations in the vertical direction tend to decrease, this is facilitated by the growth of the outer perimeter of the inner zone of the workpiece and supporting

K carried out with deformation rings 3 and 4.

Claims (1)

In the manufacture of disk forgings according to the proposed method, the perimeters ri) 110 of the outer, inner and any contour located along the circumferential circumference are made equal to or close to the perimeters obtained from the diameters of the corresponding sections of the finally upsetting forging disk. This eliminates tensile stresses in the outer section of the disc. The method is carried out as follows. As a blank, a lead cylinder with a diameter of 80 mm and a height of 50 mm is used. Sectional sediment is carried out on the press with a force of 100 tf. The workpiece is placed on a base plate with a hole of 40 mm. The outer section is deposited by a ring with an internal diameter of 40 m. The draft value is 40 mm. As a result, a ring is formed along the outer contour of 10 mm and an outer diameter of about 130 mm. The outer ring is then crimped by hand using a wooden template. 1, the corrugation on the outer perimeter is 20 mm, on the inner one about 10 mm. When the corrugated walls are reduced by about 2 mm. After that, the obtained casting is placed under a press on a flat plate and the internal section is slumped. As precipitation is observed. 4 distribution of the outer ring and reducing the depth of the corrugations on it. There is no discrepancy in the sizes of the inter-applied pre-for-ring-forming risks. This circumstance indicates the absence of tensile stresses on the outer ring. The proposed method allows to improve the quality of the produced forgings of disks. Claims method of making a disk & ki disc by precipitating a billet in rings the corrugation is equal to the perimeter of the finished forging, then the corrugated area of the workpiece is placed between the plastic gaskets and the stock is re-deposited. Sources of information taken into account during esupment 1. USSR author's certificate No. 261883, cl. In 21 K 1/32, 1970 (prototype).