SU1250584A1 - Device for resistance heating - Google Patents

Description

one

The invention relates to the heat treatment of products, the profile of which may be either straight, or different from straight. It can be used in metallurgy and mechanical engineering.

The aim of the invention is to expand the technological capabilities of the installation by processing products having a different cross-sectional shape and a curved surface along the length.

Figure 1 shows the installation for electrical heating, a general view; FIG. 2 is a section A-A in FIG. Fig. 3 is a view along arrow B in Fig. 2 in Fig. 4 and Fig. 3 illustrates the arrangements of the fingers of the contacts on different surfaces of the products; figure 6 - node 1 in Fig, 2.

The installation for electrocontact heating contains a bed 1 on which clamping heads 2 with contacts 3 are mounted. Contacts are made in the form of a hollow body 4 having holes 5 in which fingers 6 are arranged for movement, made in the form of a stepped cylinder, one of the steps of which tapering or tapering surface of the tread hole Fingers 6 of the lower part are connected with spring 7 holding the pins 6 in the initial position. - Compressed air is supplied to the cavity 8 of the housing 4, which ensures that the mobile fingers are pressed against the surface of the product with uniform and sufficient force to cover the contour of the workpiece.

In addition, the fingers are connected to the current leads 9.

505841

Compressed air is supplied to the cavity 8 of the housing 4 by means of nozzles 10, which presses the fingers against the surface of the product with a certain pressure.

The proposed installation works as follows.

The workpiece is placed on the bottom contact 3, include

 About power cylinder clamping head. The upper contacts 3 move until the surface of the housing 4 of the upper and lower contacts comes into contact with the product.

 5 Compressed by the springs 7 and compressed air, the fingers 6 self-adjusting relative to the contour of the surface of the product.

When moving fingers, their conical surfaces move away from conical

20 of the surfaces of the housing and into the annular gap formed part of the air enters along the fingers, cooling them.

Heating of the product is carried out after the product is clamped in contacts 3 by ohmic resistance by supplying electric current to the housings 4 of the contacts 3 and the fingers 6 with flexible current leads.

30 After holding the product at a given temperature, the current is switched off and the force is removed from the power cylinders 2.

In this case, the upper contact 3 rises, the fingers 6 under the influence of the spring 7 and the compressed air return to their original position. After removal of the workpiece, the cycle is repeated.

The proposed device will allow

40 to expand the technological capabilities of the device by treating products having a different cross-sectional shape and a curved surface along the length.

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Editor L.Avramenko

Compiled by M. Kostin

Tehred O.Gortvay Proofreader S.Sheknar

Order 4378/21 Circulation 552 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, Projecto st., 4

Claims (2)

Ί. INSTALLATION FOR ELECTRIC WINDOWS- TACTICAL HEATING, containing a bed, clamping heads with contacts connected to current leads, characterized in that, in order to expand technological capabilities by processing products having different cross-sectional shapes and curved surfaces in length, the contacts are made in the form of a hollow body, having holes in which, with the possibility of movement, fingers connected to current leads, and nozzles for supplying compressed air to the body cavity are installed. 2. Installation ποπ, Ι, characterized in that the fingers are made in the form of a stepped cylinder and spring-loaded.