CN2080736U

CN2080736U - Electric induction heating device for steel rail end hardening apparatus

Info

Publication number: CN2080736U
Application number: CN90215691U
Authority: CN
Inventors: 周玉森
Original assignee: Rail & Beam Mill Under Panzhihua Iron & Steel Co Ministry Of Metallurgical Ind
Current assignee: Rail & Beam Mill Under Panzhihua Iron & Steel Co Ministry Of Metallurgical Ind
Priority date: 1990-12-20
Filing date: 1990-12-20
Publication date: 1991-07-10

Abstract

The utility model belongs to the technical field of induction heating. The utility model comprises an inductor, a bus bar, a fixed mount and a bolt, wherein the inductor is arranged on the fixed mount by the bolt, and the bus bar is arranged on the input terminal of the inductor. The structure of the inductor comprises five loop circuits, which is composed of a yoke, a loop circuit on the upper part, a pair of upper loop circuits and a pair of lower loop circuits, wherein the two pairs of loop circuits are arranged at both sides of the inductor. A longitudinal induction zone comprises a heating zone and a transition zone. The utility model has the advantages that the utility model is suitable for tracks in a plurality of types, a heating layer at the cross section of a heating track head is in a uniform symmetrical hat shape, and the depth of the heating track head reaches or exceeds 10 to 15mm.

Description

Electric induction heating device for steel rail end hardening apparatus

The utility model belongs to the induction heating technique field.

At present, some producers of China adopt three loop structure form inductors usually when steel rail end is quenched.Its shortcoming is that the zone of heating hat shaped that the heating back forms and the degree of depth etc. are not good; Particularly can not solve the heating problems at place, Xia Yuan angle, rail head both sides, the shape of zone of heating is splayed, and the zone of heating degree of depth that causes the Xia Yuan angle to be located does not reach the specification requirement of quenching.If with the way that prolongs heating time or increase heating power, the heat that leans on rail head top its degree of depth is made moderate progress, but its effect does not still reach the quenching technology requirement through the zone of heating of heat conduction to place, Xia Yuan angle.On the contrary, because of prolonging heating time and power increases, very easily cause on the rail head two angle, garden to locate overheated and become waste product; Increase power consumption simultaneously, prolonged the activity duration, reduced output.

The objective of the invention is shortcoming, propose a kind ofly to be applicable to multiple rail type, make heating rail head cross-section zone of heating be shaped as hat and the degree of depth is 10～15mm or above steel rail end quenching press electricity consumption induction heating equipment at three loop inductors.

To achieve these goals, the utility model adopts following solution:

Steel rail end quenching press electricity consumption induction heating equipment comprises inductor, bus-bar, fixed mount and bolt; Inductor is contained on the fixed mount by bolt, and bus-bar is installed in the input of inductor.Sensor structure is five loops, and by the iron yoke, upper circuits, a pair of upward loop, both sides and a pair of loop are down formed.Upper circuits one termination inductor input, the other end is connected with loop on the both sides of connecting mutually.Loop one end is connected with the loop other end on the both sides under the both sides parallel with one another, its another another input of termination inductor.Inductor longitudinal induction district mainly comprises the thermal treatment zone and transition region; Its thermal treatment zone iron yoke all is a silicon steel sheet, and its transition region iron yoke is that silicon steel sheet and copper sheet alternately insert assembling, and remainder is a copper sheet.Inductor thermal treatment zone length is 30～140mm, and its length of transition zone is 50～150mm.This device has same device and is applicable to the preceding heating of multiple rail shaped steel rail rail-head quenching, and heated rail head of rail is broken into zone of heating and is shaped as hat symmetrically, and its degree of depth reaches 10～15mm or darker advantage.Reduce power consumption simultaneously, shortened the activity duration, prevented the overheated of place, angle, garden on the rail head two effectively, increased output.

Fig. 1 is the utility model example schematic;

Fig. 2 a is the inductor vertical view;

Fig. 2 b is the B-B portion view of Fig. 2 a;

Fig. 3 is inductor circuit figure;

Fig. 4 is an inductor longitudinal induction district schematic diagram.

Below, give an example in conjunction with the accompanying drawings, the utility model is further described.

An intermediate frequency transformer 2 is installed on the quenching machine 1, is connected to steel rail end quenching press electricity consumption induction heating equipment on it, comprise inductor 3, bus-bar 4, fixed mount 5 and bolt.Inductor 3 is installed on the fixed mount 5 by bolt.Bus-bar 4 is installed in the input of inductor, and its other end is connected to the output of intermediate frequency transformer 2.Sensor structure is five loops, is made up of iron yoke 6, upper circuits 7, a pair of upward loop 8,9, both sides and a pair of 10,11 in loop down.One input of upper circuits 7 one termination inductors 3, the other end is connected with loop 8,9 on the both sides of connecting mutually.Loop 10,11 1 ends are connected with loop 8,9 other ends on the both sides under the both sides parallel with one another, and its other end is connected to inductor 3 another inputs.Inductor 3 longitudinal induction districts mainly comprise the thermal treatment zone 12 and transition region 13, and its thermal treatment zone 12 iron yokes all are silicon steel sheet, and its transition region 13 iron yokes are that silicon steel sheet and copper sheet alternately insert assembling, and remainder is a copper sheet.The length of the inductor thermal treatment zone 12 is 30～140mm, and the length of its transition region 13 is 50～150mm.

After entering the inductor 3 of quenching machine 1, rail 17 rail ends connect intermediate frequency transformer 2 power supplys.The magnetic flux that the upper circuits 7 of inductor produces constitutes the loop and produces eddy current through air gap and rail head tread, and its tread is heated.The magnetic flux that loop 8,9 produces on the both sides of inductor constitutes the loop and produces eddy current through air gap and rail head two sides, and its two sides are heated.The magnetic flux that loop 10,11 produces under the both sides of inductor becomes the loop and produces eddy current through garden dihedral under air gap and the rail head both sides, makes its two Xia Yuan angle obtain heating.Because the compensation in loop 10,11 under the both sides.Make Xia Yuan angle place heating-up temperature and tread and two sides heating-up temperature basically identical, realized hat zone of heating symmetrically, its degree of depth reach 10～15mm or more than.Because adopted the heater means of segmentation classification, the steel rail end zone of heating degree of depth longitudinally evenly descends.

Claims

1, steel rail end quenching press electricity consumption induction heating equipment comprises inductor, bus-bar, fixed mount and bolt; Inductor is installed on the fixed mount by bolt, and bus-bar is installed in the input of inductor; It is characterized in that: sensor structure is five loops, is made up of iron yoke, upper circuits, a pair of upward loop, both sides and a pair of loop down; Upper circuits one termination inductor input, the other end is connected with loop on the both sides of connecting mutually; Loop one end is connected with the loop other end on the both sides under the both sides parallel with one another, and its other end is connected to another input of inductor;

2, as the said device of claim 1, it is characterized in that: inductor longitudinal induction district mainly comprises the thermal treatment zone and transition region; Its thermal treatment zone iron yoke all is a silicon steel sheet, and its transition region iron yoke is that silicon steel sheet and copper sheet alternately insert device;

3, as claim 1,2 said devices, it is characterized in that: inductor thermal treatment zone length is 30～140mm, and its length of transition zone is 50～150mm.