SU1520732A1 - Apparatus for producing hollow articles from sheet blank - Google Patents

Description

one

(21) 4290889/27

(22) 07.29.87

(46) 10/30/91. Bul N540

(71) Institute for Problems of Saerhplasticity

metals Academy of Sciences of the USSR

(72) M.N.Nurmukhamego8, S.V.Shapiro, R.R.Salmkhov and R.M. Valinurov

(53) 621.98.044.7 (088.8)

(56) Aator Certificate USSR K5; 590043. Cl. R, 21 D 26/14, 1976.

(54) DEVICE FOR OBTAINING COMPLETE PRODUCTS FROM SHEET PLANTS / i

(57) The invention relates to the high-energy processing of materials, in particular, to devices for producing hollow articles from sheet blanks by pulsed

magnetic field. The purpose of the invention is to improve the quality of products by increasing the draw ratio. The device contains die tooling elements — a matrix (M) 1, a pressure plate (P) 2 and a punch 3. In a punch 3 made of a dielectric material, an inductor 4 is mounted, which consists of series-connected flat and cylindrical spirals. The punch 3 is installed on the reciprocating mechanism. In P 2 mounted heating element. After heating the billet to the superplasticity temperature, the leads of the inductor 4 are connected to a current source. A series of pulses is applied to the coils of the inductor, ensuring the pre-stretching of the workpiece and its calibration according to M1. 1 Cp f-ly, 2 ill.

f1 / g.

The invention relates to the high-energy treatment of pressurized materials, in particular to magnetic impulse punching, and can be used to produce semi-finished products in various fields of engineering.

The aim of the invention is to ensure the quality of the products by increasing the draw ratio of the gfi using a device

Fig, schematically shows the proposed device, 9id: Nor fkg. 2 - the same, on one of the sea navigators, general view,

The device contains a matrix K on which the pressing plate 2 is located. In the hole of the pressing plate 2 there is a punch 3 fixed on the reciprocating mechanism (not shown). These parts are elementary die tooling. The punch 3, made of a dielectric material, contains an inductor 4, consisting of successively connected flat 5 and cylindrical 6 spirals. The inductor has pins 7, 8, and 9 for connected5 1 spirals to the mains / pulse current. In prizhi.noy plmte placed the heating element, which can-be made annular.

The device works, in the following 2et manner.

The blank is laid down with HS matrix 1 and pressed with plate 2, E of which is

a heating element. The punch 3 is installed on the m / i of the IL-1, an allowable / -th distance from the workpiece, p. the power source is used to heat the pre-cooker plate, and through it the heat sinks up to the superplasticity & one:

As soon as the preparation of a given temperature is reached; vb (water from nnukorz 4 polklyuyutsya to,; sewmnpulsngo, after which serves postpedozzetelnyh

pulses per inductor 4. The intervals between pulses are chosen such that a fine-grain structure is formed in the material being processed. In this case, pulses are supplied both on the plane and on the cylindrical helix. This ensures stretching and clamping of the C1; lindrical part of the workpiece. The workpiece is deformed by the interaction of the magnetic fields of the inductor discharge current and the induced current in the workpiece. After completion of the process, the industrial output of the heating element and the source of pulsed current is disconnected. Then, the punch 3 is retracted, the thrust presser is removed / and the finished product is removed.

Claims (2)

Claim 1. Device for producing hollow articles of sheet blanks, containing coaxially mounted die tooling elements - matrmtsu, punch and pressure plate, inductor mounted in one of the die tooling elements and made in the form of sequentially connected flat vi vi cylindrical - Ralv, and the source of that, connected to .5; Duktor, OTL1 / which is so that, in order to improve the quality of products, it is more important, but with the heater element installed on the clamping PLMT8, t additionally Uktor, sz zznkyrl with e-estochn8ko, 1current l M8sto l connection. .The flat and cylindrical spools, the inductor is usable in the punch, and its. a flat helix razhe gesheka from the side of the end of the PU, Enson. 2. A device according to claim 1, wherein a heating element is made with T8N, that the heating element is formed annularly on the forka of the inner annular surface of the press plate.