SU551382A1 - Device for induction heating of workpieces - Google Patents

Description

one

The invention relates to the induction heating of metals using high frequency currents and is intended for use in technological processes that require heating the metal before plastic deformation, heat treatment, and other operations.

A device for induction heating of blanks is known, comprising a multi-turn inductor, which communicates freely with the surrounding atmosphere from both the loading and unloading side, loading and unloading mechanisms. The blanks of measured length are loaded into the tool and moved through it by the pusher of the loading mechanism. Unloaded by ejection, the billet enters the tray fixed on the lever, and when the latter is turned, it is separated from the subsequent heated billet.

It is also known a device for induction heating, consisting of an inductor, which communicates freely with the surrounding atmosphere from both the loading side and the unloading part of the workpieces and the loading device. Products in the form of cylindrical

dimensional blanks are loaded into the inductor of such a device and moved through it with the help of a loading device. The heated billets are unloaded from the inductor by pushing them through the blanks moving through the inductor when the next billet is loaded into the inductor. The paged billet enters the inclined chute and, under the action of gravity, separates from the subsequent heated billet, after which it goes to the place of the subsequent technological operation.

In the known devices, the workpieces at the exit from the inductor fall into the zone of a weakened electromagnetic field and partially cool down, and the heating is uneven in length and cross section. In addition, the inductor is not protected at the entrance and exit of the workpieces from the influence of the environment, which also contributes to the growth and oxidation of the workpieces. During operation of known devices, the blanks can be unloaded from the inductor two or more by sintering them together.

Claims (2)

The purpose of the invention is to create a device that ensures reliable unloading of the heated billets without any need to reduce the set temperature during unloading. This is achieved by the fact that the inductor is provided with a spring-loaded stop and a cutter, installed on the side opposite to the loading mechanism, made in the form of a plug, which embraces the stop and moves in the direction perpendicular to the inductor axis, and the turns of the inductor are moved apart at the place of discharge. FIG. 1 shows the proposed device, a general view; in fig. 2 shows section A-A in FIG. 1, the position of the cutter before starting the unloading of the workpiece; in fig. 3 the same, the position of the clipper at the end of the unloading. The device consists of a housing 1 on which an inductor 2 is installed. The coil 3 of the inductor 2 is molded into block 4 of WELL-CONCRETE concrete, and in the unloading zone between the turns of coil 3 there is a slot 5 sufficient to pass the workpiece 6. At the entrance of the inductor 2 a pneumatic cylinder 7 is installed for feeding blanks 6 to the loading area. In order to push the blanks 6 into the inductor 2, a pneumatic cylinder 8 is installed with a spring-loaded pusher 9. In the slot 5 of the inductor 2 a cutter 1O is installed, which has the shape of a fork. The cutter 10 is fixed on the rod of the pneumatic cylinder 11. On the inductor 2, on the discharge side, there is a water-cooled spring-loaded stop 12 with a tip 13 passing through the cutter fork 10. All openings of the inductor 2 are closed with sealing covers 14, 15 and chambers 16, 17. The device works as follows in a way. The blanks 6 are loaded into the inductor 2 by pneumatic cylinders 7 and 8. Each subsequent loading-40 cooking 6 moves the entire column of blanks in the inductor 2 so that, through the passage, the blanks reach the set temperature. When the required temperature is reached, the cutter 10 is turned on. The cutter fork 10 picks up the heated billet 6 and thaws it into the chamber 17. The tip 13 of the spring-loaded stop 12 at the same time passes through the cutter 10 fork and holds the next billet 6. The cutter 10, having dropped the heated billet 6, returns to the starting position. The loaded workpiece 6 moves the entire column of workpieces so that the workpiece held by the tip 13 is in position opposite the cutter 10 in the slit 5 of the inductor 2. Then the cycle repeats. This embodiment of the device for induction heating of the workpieces prevents the workpiece from entering the zone of weakened influence on it of the electromagnetic field and allows creating a non-oxidizing environment in the heated space. The proposed device provides high uniformity of heating across the cross section and stability of the parameters from the workpiece to the workpiece and allows heating of short length workpieces and workpieces such as rings. Apparatus of invention for heating the workpieces containing a multi-turn inductor and loading mechanism, characterized in that, in order to eliminate the heat losses of the workpiece at the time of unloading and ensure the reliability of the piece unloading of the workpiece between the turns of the inductor, the spring is installed stop and cutter, made in the form of a fork, covering the stop and having the ability to move in the direction of the vertical axis of the inductor, and The inductor cables are moved apart at the point of discharge.