SU924920A1 - Device for induction heating of ring parts - Google Patents

Description

(54) DEVICE FOR INDUCTION HEATING OF RING DETAILS

I

The invention relates to electrical engineering, in particular, to devices for TSn "auction heating by industrial frequency currents of a ring of 1X parts before assembly,

A device for heating parts during assembly, comprising excitation windings located on horseshoe-shaped cores facing one another with an open part, is known to have interconnected moving tips between the ends, one of the cores being provided with a screw drive moving in the axial direction l.

The disadvantage of the known device. are low energy indicators (efficiency and power factor) during heating of ring parts made of non-magnetic metal due to the fact that when the heated part is fixed by the closing moving pole tips between the latter, an additional non-magnetic gap occurs,

which is equal to the thickness of the heated part. This leads to an increase in time or heat of the part and a decrease in device performance.

The closest to the present invention is a device for induction heating of ring parts containing a stationary C-shaped magnetic core installed in a housing with induction windings and a magnetic tube with a replaceable pole tip designed to be placed in the part t2 hole.

However, this device does not allow to heat parts with high energy indicators, and it is also difficult to work, which reduces the reliability of the device.

The purpose of the invention is to demonstrate the energy performance of the device.

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Claims (2)

The goal is achieved by the fact that the tip of the magnetic core is made in the form of a cylinder with a conical end and an elastic magnetic conductive teriap, for example, a magnet with a soft magnetoepast. FIG. 1 shows schematically a device, a general view, a section; in fig. 2 position of the tip at the time of the circuit closure. A device for induction heating of ring parts contains a fixed magnetic circuit 2 mounted in Kopaiyce 1, inside of which excitation coils 3 are placed. In the guides 4 of the magnetic circuit 2, there is a movable composite magnetic circuit consisting of a rod magnetic conductor cei 5 and an interchangeable pole tip 6 connected to it to a fused magnetic conductive material, such as a magnetic magnet magnetoe paste, with a conical end. Cylinder 7 serves to move the composite magnetic circuit. The device operates in the following manner. The part arrives at the place of heating. A cylinder 7 is turned on, the rod of which moves the core 5, the tip 6, up to the stop of the end face of the tip 6, into the projecting part of the magnetic circuit 2. Thus, the magnetic circuit is closed. The part is centered in the fixing surface of the tip 6, which deforms from the pressing force, for example takes a barrel shape, eliminating gaps from the magnetic target. The drive coils 3 are turned on, the magnetic flux closes on the magnetic circuit of the magnetic circuit 2, the core 5 and the tip 6 through the part. Due to the magnetic induction in the component, which is the secondary winding, a current appears that occurs when the component heats the component with this current. After a certain time, the 04 coil is disconnected. Then switch the cylinder 7, the stock of which returns the magnetic core; 5 and tip 6 in the original position. Remove the heated part and serves in its place next. The implementation of a replaceable pole piece made of an elastic magnetic conductive material in the form of a cylinder with a conical end simultaneously provides the functions of clamping the magnetic circuit, centering and fixing the heated ring part, as well as tightly fitting the tip to the inner surface of the ring part, eliminating gaps in the closed circuit and increasing energy performance installation. Claim 1, A device for induction heating of ring parts, comprising a stationary C-shaped magnetic circuit mounted in a housing with foreign windings and a movable magnetic circuit with a replaceable pole piece, which is designed to accommodate The tip is in the form of a cylinder with a conical end of an elastic magnetic conductive material. 2. The device according to claim 1, wherein the magnetically flexible magnetoelastic is used as the magnetic staining material. Sources of information taken into account during the examination 1. USSR author's certificate No. 311426, cl. H 05 B 5 / GS, 1969. 2. USSR author's certificate in application No. 2953344 / 24-07, cl. H 05 B 6/36, 11.O6.8O. uz.l