SU856607A1 - Method of pressing articles - Google Patents

Description

The invention relates to the processing of metals by pressure, in particular to the extrusion of products.

There is a known method of extrusion of parts by heating the billet and pulling out the matrix point {11.

The disadvantage of this method is the large energy consumption for heating and deforming the workpiece.

The purpose of the invention is to reduce energy consumption during the extrusion of thin-walled profiles.

The goal is achieved by the fact that according to the method of press molding; extruding the surface layer of the workpiece, and heating the surface layer is carried out locally to a temperature of 0.7-0.95 to the melting temperature of the workpiece material directly in front of the deformation zone.

FIG. 1 shows a scheme for carrying out the method for extruding the outer layer of the workpiece; in fig. 2 - the same, when pressing the inner layer of the hollow billet.

The blank 1 of any length is fed into the rail w} LK 2, and then through heating

waggle 3 - into container 4. When passing through the heater 3, the surface layer of the preform is heated to a temperature close to the melting temperature. With further advancement, the end face of the workpiece 1 abuts against the material 5 and under the action of a pushing force, the plastic layer of metal is removed from the surface of the workpiece. When moving metal P {and the workpiece is dripped; 1, it is found in the accumulator 6, and then it is extruded through channel 7, forming a profile. eight.

Upon receipt of a product from the inner layer of the workpiece 9, a hollow mandrel 10 with heaters ... and i at its end is inserted into it (Fig. 2). The billet with the mandrel is installed coaxially with the matrix 12 and after heating the surface layer is moved relative to the matrix, the heated plastic layer is removed and the gap between the mandrel 10 and the matrix 12 is extruded, forming a profile 13.

Example. Tubes with a diameter of 20 mm are; a 1 mm thick splined wall is made of steel according to an extrusion scheme from the outer layer of the workpiece. As initial stock

take a bar with a diameter of 15 mm, a length of 150 mm, the blank is pressed in a special press.

Heating the restless ty in | 1HF up to 1500 ° C. Pressed tubes have a smooth and drained surface. The pressing force does not exceed the I th.

The proposed method makes it possible to reduce the energy consumption for heating, to reduce the force of deforming, and to use it for issuing an uncoupled blank.

Ph o rm y Lee and 3 o b e te n u

The method of pressing products by heating the logger and squeezing through the point matrix.

This, with the aim C} shzheshch {energy consumption during the pressing of thin-walled products, carried out in a surface layer of the workpiece, and heating was carried out locally (it is 0.7-0.95, the melting temperature of the material of the workpiece is directly in front of the deformeddai center.

HfTD-iraiKH information taken into account during the examination 1. V. V. Zholobov and G. I. Zverev. M, Metallurgists, 1971, p. 137 (prototype).

FIG. 2

Claims (1)

Claim The method of pressing products by heating the workpiece and extruding through the die of the matrix 4 characterized in that, in order to reduce energy consumption during the pressing of thin-walled products, the surface layer of the workpiece is extruded, and the surface layer is heated locally to a temperature of 0.7 to 0.95, the melting temperature of the workpiece material immediately before the deformation zone. And <r full textbook and information technology, taken into account during the examination 1. Zholobov V.V. and Zverev G.I. Metal pressing. M., ’’ Metallurgy. ” 1971, p. 137 (prototype).