SU687627A1 - Inductor-transformer - Google Patents

Description

one

The invention relates to the field of induction heating and can be applied in devices for induction heat treatment of products.

Known inductor-transformer for heating cylindrical products, such as crankshaft journals, containing a primary multi-turn winding in the axial direction, covering the secondary coil, made of rotary adjustable half-rings, separated by an air gap l.

A disadvantage of the known inductor is the difficulty of loading into it products of the type of crankshafts.

The aim of the invention is to simplify the installation of products in the inductor.

This is achieved by the fact that the inductor is equipped with an W-shaped magnetic core and a secondary multiturn wafer winding, while the biscuits of both windings are mounted on the middle core of the magnetic core with the possibility of an angular evolution on it, and the secondary windings are rigidly connected with inducing semi-rings so that one biscuit or a group of interconnected galet is associated with one semiring or a group of series-connected semirings, and another biscuit or a group of biscuits is associated with an opposite symmetric gib or g ppoy semirings inductor.

FIG. 1 shows the proposed induction transformer,. general form; in fig. 2 shows section A-A in FIG. one; in fig. 3-6 depicts a trunnion (various embodiments).

The inductor-transformer contains high-frequency transformers (p 1) and an induction coil (2), which induce semicircles 3 and 4 of which are connected by rigid buses. 5 to the conclusions of the secondary

Claims (2)

. transformer windings. High-frequency transformer 1 consists of short-circuit windings 6 and Ш of the figurative magnetogfovod 7. The middle rod 8 of the W-shaped magnetic core is made in the form of a trunnion and can have various designs (see Fig. 3-6). The pin in FIG. consists of a middle rod 8 of rectangular cross section, on which plates 9 of ferromagnetic material, for example ferrite, are placed. The pin in FIG. 4 is formed directly by the middle core 8 of the magnetic circuit, having a cylindrical shape. The pin in FIG. 5 consists of a middle rod 8 of rectangular cross section on which the sleeve 10 is made of ferromagnetic material. In all versions, the outer surface 11 of the trunnion or part thereof is cylindrical. For each biscuit 6, the inner surface or its part in contact with the cylindrical surface 11 of the trunnion is also made cylindrical. FIG. 3 and 4, a rectangular hole is made in the galet 6, in which the inserts 12 of antifriction material, for example polyamide, are installed. FIG. 5 and 6, the inner surface of the 1 biscuit is cylindrical, and the biscuit itself is made of an antifriction material, for example, an AO-2O alloy. The inductor operates as follows: Inducting semirings 3 connected by rigid tires 5 with a group of biscuits 6 forming the secondary winding rotate in the direction of arrow B around the trunnion, which is performed by the middle rod 8 of the W-shaped magnet, to position 1. connected by hard tires 5 with another group of doublet 6 secondary sidewalkers, turn in the direction of arrow B around the trunnion (rod 8) to position P. The machined part 13 (crankshaft) is installed by the loading mechanism in Proposition for heating so that the axis of the neck, to be hardened, coincides with axis T of the inductor 2. After that, the inducing half-rings 3 and 4 are turned to the working position. The high frequency electric current from the power source (not shown) is supplied to the primary winding 6 of the transformer 1. The secondary winding of the biscuits 6 of each group about hard 5 is fed into the inducing half rings 3 and 4 and heats the neck of the hardened part to the required temperature. Since the inducing semi-rings 3 and 4 are 1-1 mirror-symmetrical, and the air gaps are about (between the floor-inducing rings and the shaft neck are the same, the shaft neck heating will be uniform. After the heat treatment is completed, the inducting semi-rings 3 and 4 are again developed according to arrow B and B and the hardened part are removed. The cycle is then repeated. This inductor-transformer design eliminates the need to move the primary winding, which simplifies the design of devices for heat treatment of engineering products. The invention The inductor-transformer containing the primary multi-turn burlet and the secondary coil, consisting of symmetrical inducing semirings, separated by an air gap, is characterized by the fact that, in order to simplify the process of installing products into the inductor, it is equipped with an W-shaped magnetic circuit and secondary multiturn galetny winding, with the biscuits of both windings mounted on the middle core of the magnetic circuit with the possibility of angular rotation, and the biscuits of the secondary winding are rigidly connected with inducing and semicircles so that one biscuit or a group of interconnected wafers bonded to one semicircle or a group of series-connected half-rings, and the other biscuit or biscuit group is bonded to an opposing semicircle simmeo ary group or semiring inductor. Sources of information taken into account during the examination 1. Slukotskaya A.E., RYSKIN S.E. Inductors for induction heating. L., Energie, 1974, p. 168, fig. 1O-I5. 7 t I (3 I I I r I -1 / G12 FIG. l