SU1278092A1 - Method of swaging ingots - Google Patents

Abstract

The invention relates to forging, in particular to precipitation methods. The aim of the invention is to expand the capabilities of the equipment used. The purpose of the invention is achieved by sectional precipitation of the ingot, in which compression by parallel plates alternate with compression by inclined ones. Each compression is carried out until the formation of the Faj site with the value of Рд / 2 .- Рл- i Рц / A; GT .., where FQ is the initial cross-sectional area of the workpiece, Рц is the nominal pressing force, is the yield strength of the metal at the i-ro temperature . A- - relative hardening at the i-th reduction. The precipitate is terminated by deforming the ingot with a parallel plate under creep conditions until the ends are flattened. The efficiency of the method increases SS when forging workpieces of large diameter and low height. Zil. (L

Description

eleven

The invention relates to the processing of metals by pressure and can be used in the settlement of large-sized ingots on universal presses of average power.

The purpose of the invention is to expand the capabilities of the equipment used.

FIG. 1 shows the original slice {in FIG. 2 - deformation of the ingot by an inclined plate in the initial stage; in fig. 3 shows the ingot area formed as a result of the deformation of the inclined plate in FIG. And - deformation by a parallel plate; in fig. 5 shows pads on an ingot formed as a result of deformation by an inclined and parallel plate; FIG. 6 - deformation of an ingot by an inclined slab of an ingot in the intermediate stage -, in FIG. 7 - deformation of an ingot by a parallel plate under creep conditions; in fig. 8 - the end of the precipitation process.

The method is carried out as follows.

The ingot 1 is installed on the lower flat plate 2 and the inclined plate 3 is deposited before the formation of the platform 4, the area of which is determined from the expression

i ife

where P | 4 - the nominal force of the press; BUT; - relative hardening

on i-M compression

 - yield strength of metal at a temperature of i-ro reduction; FP is the initial area of the ingot cross section. Then, the slab 3 is installed parallel to the slab 2 and the ingot is deposited to form an end pad with a size;

The precipitate is terminated by deforming the ingot with a parallel plate under creep conditions until the end is level.

Example. An ingot weighing 290 tons of steel 35 with a diameter of 3.617 m; with a height of 3617 m, it is heated to a temperature of 1200 ° C, compressed in sections on a press with a force of P 150 mn. Average: sc278092

the cooling rate of the forging is 0.05 / s, the total degree of deformation at a draft is 0.5.

Resistance to deformation at 5 upsetting of this ingot on a usi20 press

I eat 150 mn equals Cs - 14.5 MPa.

I o The yield strength of steel 33 at T

 1200 s is equal to G 5.5 MPa. Relative hardening at first

zhatiy And, -g: - 2,65. The size of the area at the first compression bV 10.3 m, at the second compression Faj 10.2 m, .- Ag 2.63. Precipitation. complete by deformation of the ingot under creep conditions on the press with a force of 150 mn.

The use of the proposed method is especially effective when forging workpieces of large diameter and low height.

0

five

Claims (1)

1, The invention relates to the processing of metals by pressure and can be used in the settlement of large-sized ingots on universal presses of medium power. The purpose of the invention is to expand the capabilities of the equipment used. FIG. 1 shows the original ingot {in FIG. 2 - deformation of the ingot as an inclined plate in the initial stage; in fig. 3 shows a platform on a fuse formed as a result of the deformation of the inclined plate in FIG. And - deformation by a parallel plate; in fig. 5 shows pads on a fuse formed as a result of deformation by an inclined and parallel plate; FIG. 6 - deformation of an ingot by an inclined slab of an ingot in the intermediate stage -, in FIG. 7 - deformation of an ingot by a parallel plate under creep conditions; in fig. 8 end of the precipitation process. The method is carried out as follows. The ingot 1 is installed on the lower flat plate 2 and the inclined plate 3 is deposited until the formation of the platform 4, the area of which is determined from the expression i ife where P | 4 is the nominal pressing force; BUT; - relative hardening on i-M compression - yield strength of the metal at a temperature of i-ro reduction; FP is the initial area of the cross section of the ingot. Then the slab 3 is installed parallel to the slab 2 and the ingot is deposited before the end face is formed, the next diametrically opposite section is subjected to compression by the inclined slab 3. The precipitate is terminated by deforming the ingot with a parallel plate under creep conditions until the end is level. Example. An ingot weighing 290 tons of steel 35 with a diameter of 3.617 m; at a height of 3,617 m, it is heated to a temperature of 1200 ° C, compressed in sections on a press by a force P = 150 mn. Average: the rate of cooling of the forging is 0.05 / s, the total degree of deformation at a draft is 0.5. The resistance to deformation during the draft of this ingot on a press with an effort of 150 mn is equal to Cs - 14.5 MPa. Io The yield strength of steel 33 at T 1200s is equal to G 5.5 MPa. Relative hardening at the first compression A, -g: - 2.65. The size of the area at the first compression bV 10.3 m, at the second compression Faj 10.2 m, Ag 2.63. Precipitation. complete by deformation of the ingot under creep conditions on the press with a force of 150 mn. The use of the proposed method is especially effective when forging workpieces of large diameter and low height. Claims ingot method, in which an ingot is installed on a flat bottom plate and is initially precipitated in areas inclined with an upper flat plate and then parallel, characterized in that, in order to increase the equipment used, the slump is carried out alternately an inclined and parallel flat plate before an ingot is formed on the ingot after each reduction of the area on the side of the upper plate, the area of which is determined from the heat output of 1 ° F. Li 2 A; bg; where Rc is the nominal press force; BUT; - relative hardening on i-M compression G.; - yield strength of the metal at a temperature i-ro reduction; FP is the initial cross-sectional area of the workpiece, while deforming is subjected to diametrically opposite areas equal to the central axis of the ingot, and the draft is completed by deforming the ingot with a flat parallel plate under creep conditions before the end surface of the ingot is leveled. Fig.Z I / (//////// y / / Y ////////// 5 Fyy.6 ////////////// 7 /// lg J y 2 ////// L //////. 7