SU1422519A1 - Method of manufacturing billets from granulated alloys - Google Patents

Abstract

The invention relates to the field of large cross-sectional blanks from granulated logs. The goal is to eliminate the anisotropy of the strength properties. The original briquettes repeatedly push through the G-channel with back pressure, changing the direction of the bend after each pressure to the opposite. After two breaks, the briquette is turned 90 ° & around the longitudinal axis, and the total number of deformation cycles is a multiple of four. Repeated punching of briquettes with a change in the direction of bending and tilting ensures the elimination of the anisotropy of the strength properties, ft or., 2 tab. with s

Description

O1

CD

11: goitre 1 s from (go to the area and: - prepared from large-cross-section preparations of granulated alloys ,.

The purpose of the invention is the elimination of strength properties,

The goal is achieved due to the fact that the briquette 1 s-5 is pushed through the Г-shaped channel with a change in the flexure of the bend at each subsequent pushing to the opposite with respect to the pre-soul, and after every two passes the briquette is turned 90 ° around the longitudinal axis, moreover, the total number of freaks is a multiple of four,

Figs i-4 show four successive directions of briquette pushing, where 1 ,, are the faces of the workpiece; 556,7,8 - opposite faces.

At the first punching, the preform is bent. On .90. In connection with the increase in the length of the trajectories of the movement of metal particles — when Lenin is removed from the surface of faces 1.2 to the surface of faces 4.3, at the first loading of a briquette, the non-homogeneity of the structure and strength properties arises, and at the second pushing, the workpiece is also bent by 90, n in the direction opposite to the first order of sale. The volumes of the metal, adjacent to the surface of the faces of 1,2 peremegtsotts along a longer trajectory, as a result of which the total displacements occur at all points of the cross section of the burner, as well as the structure and strength properties in the plane of izibib,

To align the strength properties in the direction perpendicular to the plane of the bend, before the third billet, the billet is turned around the longitudinal axis by 90 and the flow passes through its double pressing, similarly to the first and second, At the same time, the opposite faces 2 and . H, blanks, perpendicular to the pair

faces and 6,7, are located parallel to the deflection plane (Fig, 3,4). As a result, after four punching (with the workpiece turning to 90 after the second), it achieves the elimination of the total movements at all points of the cross section of the workpiece, which ensures the elimination of the strength anisotropy.

ten

ts

20

-

25 o

22519-. 2

properties of the workpiece and increase their uniformity.

Briquettes from granules of high-strength alloys of the aluminum-zinc-magnesium system and the alloy of the atmynium-magnesium-lithium system, with 100-1,00 v "300 mm measurements are subjected to two ™ four, six, eight, and ten tirazrmu punching through the G-channel. on a multi-plunger press with a force of 2000 ts., with each subsequent pushing through, the direction of the bend is changed to the opposite, and after every two pulls, a kantikka of the briquette is carried out by 90 around the longitudinal axis.

The anisotropy of the strength properties of the obtained blanks is estimated by the ratio of the strength of the metal in a particular direction to the maximum value of the strength of the material after a given amount of prog

pressure (SVOKC

-). After selling

Briquette trough through the L-channel, its geometrical dimensions remain unchanged and are equal to 100 1 100300 mm. For testing, we cut out a plant1 | samples with a diameter of 5 mm with a working part length of 50 mm in the fractional, transverse and altitude directions. Share samples were considered to be cut in the direction of the rib.

300 mm long, transverse - samples cut in the direction of one of the 100 mm long ribs located in the plane of the bend; height samples were cut in the direction of the other 100 mm long rib located in the plane perpendicular to the plane of the bend after the last extrusion, t. e. Samples were cut in three mutually perpendicular directions. To assess the homogeneity of the properties of the resulting billet, the samples were cut from various sections of it, located at different distances from the surface.

and the output end of the workpiece.

 -.

In tab. 1 shows the characteristics of the alloy Al-Zn-Mg, in table. 2 - cnrtaaaAl-Mg-Li .;

As can be seen from the tables, the invention allows to eliminate the anisotropy and increase it. uniformity of strength properties in all sections of the workpiece.

A method of manufacturing blanks from granulated alloys, including heating briquettes and pressing them through the L-shaped channel with anti-radiation, which is characterized by the fact that, in order to eliminate the anisotropy of the strength properties, the briquette is forced through the L-shaped

In the subsequent direction of the sale of nebible at the end of the second period, the marketing of the opposite opposite npeubinyraeNiy was carried out, additionally, the cantoaca of the briquette was held 9 ° around the longitudinal axis after each two pushes, and the total number was multiplied by four.

Table I

I (prototype)

Share

Transverse0, D10, A20,420,410,420,57

Height 0,830,560,440,350,560,59

Share 0,981,00,980,971,01,0

Transverse6,950,960,970,980,960,98

Height 0,750,740,720,590,740,80

Share 1,01,01,00,981,00,99

Transverse 0.99.0,980,990,990,981.0

High altitude., O0,981,00,990,981,0

Share 0.99 I, 0 Cross 0.98, 0 High

0.80 0.83

Share

0.990.99.0

Transverse0,

Altitude1fO6.99 1.0 1.0 0.99

J, O0.98 1.0 1.0 0.98

Transverse0.990.99 0.98 0.98 0.99

High rise

5.0 0.64 0.5 0.62 0.64 - 0.68

I, 0, 0

0.990,981.0

1,00,991,0

0.83 0.810.83O, 83

1.0 0.990.981.0

0.990.99.0

6.99 1.0 1.0 0.99

0.98 1.0 1.0 0.98

0.99 0.98 0.98 0.99

0.87 0.88 0.81 0.87

0.99 1.0

0.88

1.0

1.0

0.99

0.99

0.99

0.90

I

(prototype)

Table 2

Pantovka a. by 90 °

Fsh,

Claims (1)

The invention is a method of manufacturing billets from granular alloys, comprising heating briquettes and forcing them through a L-shaped channel with back pressure, characterized in that, in order to eliminate anisotropy of strength properties, forcing a briquette through a L-shaped channel is carried out repeatedly with a change of direction bending at each subsequent punching to the opposite of the previous one, additionally tilt the briquette by 9 ° ° around the longitudinal base after every two punching, and the total number GUSTs punching a multiple of four. Table I The number of punching through the L-shaped channel Sample cutting direction вырез g> ₀ MPa The ratio ni ------, --υ _Β 'MPa Distance from ”workpiece surface, mm The distance from the output end of the workpiece, mm 100 150 300 1 Share 1,0 0.64 0.45 0.62 0.64 - 0.68 (prototype) Transverse 0.41 0.42 0.42 0.41 0.42 0.57 High altitude 0.83 0.56 0.44 0.35 0.56 0.59 2 Share 0.98 ϊ oh 0.98 0.97 1,0 * ’° Transverse 0.95 0.96 0.97 0.98 0.96 0.98 . - High altitude 0.75 0.74 0.72 0.59 0.74 0.80 4 Share 1,0 1,0 1,0 0.98 1,0 0.99 Transverse 0.99. 0.98 0.99 0.99 0.98 1,0 High altitude 1,0 0.98 1,0 0.99 0.98 1,0 6 Share 0.99 1,0 0.99 0.98 1,0 0.99 Transverse 0.98 1,0 1,0 0.99 1,0 1,0 High altitude 0.80 0.83 0.81 0.83 0.83 0.88 8 Fractional. 1,0 1,0 0.99 0.98 1,0 1,0 Transverse 0.99 1,0 0.99 0.99 1,0 1,0 High altitude 1,0 0.99 1,0 1,0 0.99 0.99 Ten pro Share .1.0 0.98 1,0 1,0 0.98 0.99 pressures 10 Transverse 0.99 0.99 0.98 0.98 0.99 0.99 High altitude 0.85 0.87 0.88 0.81 0.87 0.90 Table 2 The number of punching through L-shaped channel Sample cutting direction Ratio value The distance from the output end of the workpiece, mm The distance from the surface of the workpiece i, mm 0 fifty -J—— 1 1 ! ABOUT 1 o ί - t ί _____________ ------—------- 0 150 " about. · »“ · “. ““ “.L, c. 300 1 Share 1.00 0.59 0.41 0.57 0.58 0.59 (prototype) Transverse 0.38 0.35 0.36 0.39 0.41 0.49 High altitude 0.43 0.50 0.39 0.27 0.42 0.47 2 Share 0.87 1,0 1,0 0.93 1,0 0.97 Transverse 0.94 1,0 0.97 0.98 0.98 0.95 High altitude 0.97 0.71 0.68 0.61 0.63 0 ^ 80 ' 4 Share 1.0 ι, ο * B0 0.97 1,0 1,0 Transverse 0.99 0.98 1,0 0.98 0.98 1,0 High altitude 1,0 1,0 0.99 0.99 0.99 1,0 6 Share 0.99 1,0 1,0 0.95 1,0 0.99 Transverse 0.97 1,0 1,0 10 1,0 1,0 High altitude 0.78 0.85 0.81 0.85 0.80 0.90 8 Share 1,0 1.0 _ 0.98 0.98 1,0 1,0 Transverse 1,0 0.99 0.99 1,0 1,0 1,0 • High Altitude a 1, about 1,0 1,0 0.99 1,0 1,0 10 Share 1,0 0.99 1,0 1,0 0.99 1,0 Transverse 1,0 ‘1,0 0.98 0.99 1,0 0.99 High altitude 0.87 0.8 0.90 0.85 0.85 0.93 ! 4225! 9 Tilting 90 ° g ////// 277 77777777. 07 //, 2 2 ’Compiled by A. Dzhetgmov