SU1326381A2 - Method of producing disks - Google Patents

Abstract

The invention relates to the processing of metals with the aid of "1", mainly turbine disks. The purpose of the invention is to improve the quality of the forgings j; the isnol metal metal i ratio for forging two studs. In order to reach it before stretching the ingot to the low section, forge the bottom of the trunnion, one of the profitable part, the other of the bottom part with the grip of the ingot body. After the ingot is extended to a rectangular section, before the ingot is divided along the longitudinal axis, the trunnions are transferred to the opposite sides of the ingot longitudinal axis. This set of operations ensures the production of two blanks from one ingot. 4 il. (/) C o o O5 CO 00 ISJ

Description

The invention relates to the processing of metals by pressure and can be used in the manufacture of high-quality turbine disks.

The aim of the invention is to improve the quality of forgings and the utilization rate of the metal.

FIG. 1 shows an ingot after bilting and forging two trunnions; in fig. 2 - the same, after transferring the pins to the sides opposite to the longitudinal axis and dividing into two intermediate blanks; in fig. 3 - harvesting after felling; in fig. 4 - final forging.

The method is carried out with. In a single way.

From the profitable 1 and additional 2 parts with the sticking part of the body 3 of the ingot 4, two trunnions 5 are forged. After stretching the ingot 4 to the rectangular section, the trunnions 5 are transferred to the sides opposite to the longitudinal axis of the ingot. An ingot is divided along its longitudinal axis to produce two intermediate bins 6 of a square section of NxH and a waste of 7 of a rectangular section of bxH. Intermediate workpieces 6 are pulled at a diameter, precipitated, pulled at a predetermined diameter d, the measured workpiece 8 is cut down, the last is deposited, obtaining the finished disk 9. As a result, the metal utilization rate (IMM) is increased from 0.03-0.05 and the quality of the forgings.

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Example. An ingot with a weight of 5 tons was used to manufacture a 01150 mm disc with a thickness of 150 mm and a mass of 1300 kg. The ingot was knitted, two axles of 320x500 mm forged: one of the profitable part of the ingot, the other of the bottom with a sticking piece of the body of the ingot 50 mm long, prot zeros of the ingot at a section of 400x x900 mm, made the transfer of trunnions in the opposite directions from the longitudinal axis of the ingot. The ingot was divided by gas cutting in a / t, the longitudinal axis of the ax into two intermediate blanks with dimensions of 400x400x1250 mm and a waste with dimensions of 50x400x1250 mm. The obtained intermediate blanks were drawn by 0 420 mm and besieged to a height of 750 mm, pulled by 500 mm, chopped off a single blank with a length of 850 mm, besieged to a height of 150 mm, and a finished disc was obtained. As a result, a metal saving of 0.5 tons per disk was obtained. By a known method, an ingot weighing 6 tons per two forgings was used. The CIM value is from 0.20 to 0.24.

Claims (1)

The invention method of obtaining discs by author. St. No. 1171168, characterized in that, in order to increase the utilization rate of the metal, two trunnions are hammered into the rectangular section before the ingot is stretched, one in the zone of the profitable part, the other in the bottom zone with the sticking of the ingot body, and A rectangular section transmits the axles in opposite directions from the longitudinal axis of the ingot. / FIG. 2 FIG. 3 FIG.