SU1576576A1 - Machine for induction hardening of articles - Google Patents

Abstract

The invention relates to heat treatment of metals using high frequency currents and can be used in mechanical engineering, for example, for hardening in a continuous-sequential way cylindrical parts like shafts. The purpose of the invention is to reduce material and energy costs. During quenching, parts switch valve 18, thereby supplying air to chamber 11, while chamber 6 is connected to the atmosphere. Then the piston 9 begins to move downward, displacing fluid from chamber 10. Fluid through pipe 20 enters the sprayer 14 to cool part 16. Coolant is collected in tank 12, with valve 23 closed. After quenching, the valve 18 is switched, supplying air to the cavity 6 and the chamber 11 connected to the atmosphere. The rod 8 moves upwards, the liquid from the tank 12 is pumped into the chamber 10. When the part reaches the upper position, it is removed. 1 il.

Description

(21) 4311780 / 23-02

(22) 10/01/87

(46) 07.07.90. Bup. Number 25

(71) Scientific and production association for the technology of mechanical assembly production and special technological equipment

(72) L.Sh.Rozin and E.I. Karneev (53) 621.783 (088.8)

(56) S. Ryskin and others. Equipment for induction heat treatment. - M.-L .: Mechanical Engineering, 1966, pp. 143-144, fig.79.

(54) MACHINE FOR INDUCTION HARDENING PARTS

(57) The invention relates to thermite processing of metals using high frequency currents and can be used in mechanical engineering, for example, for hardening cylindrical parts in a continuous-sequential manner. The purpose of the invention is to reduce material and energy costs. During quenching, the parts switch the valve 18, thereby supplying air to the chamber 11, while

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The chamber 6 is connected to the atmosphere, then the piston 9 starts to move downward, displacing the liquid from the chamber 10. The fluid through the pipe 20 enters the sprayer 14 to cool the part 16. The cooling liquid is collected in the tank 12, while the valve l

The invention relates to the heat treatment of metals using high frequency currents and can be used in mechanical engineering, for example, for quenching cylindrical parts such as shafts.

The purpose of the invention is to reduce material and energy costs.

The drawing shows a diagram of the machine.

The machine contains a base 1 on which are mounted an air cylinder 2 with a rod 3 and a piston 4 dividing the working chamber for a supra-piston (or rod) 5 and sub-piston 6 chambers, a pneumo-hydraulic cylinder 7 moving the part with the rod 8 and a piston 9 dividing the working chamber for a liquid 10 and an air chamber 11, a tank 12 for collecting coolant, an inductor 13 and a sprayer 14. A rod with a piston of a pneumatic cylinder 2 is connected in series with a rod and a piston of a pneumatic cylinder 7, while the rod 8 is provided with centers 15 for mounting a part 16.

The air chamber 11 of the pneumohydraulic cylinder and the piston chamber 6 of the pneumatic cylinder are connected through pipelines 17 and a three-way valve 18 to an air line or a compressor.

The air chamber 5 of the pneumatic cylinder 2 through the pipe 19 is connected to the atmosphere.

Sprayer 14 and capacity 12 for collecting

the coolant is connected by branches 20 and 21 of the additional pipeline with the fluid chamber 10 of the hydraulic cylinder 7. In this case, non-return valves 22 and 23 are installed in the branches 20 and 21 of the opposite direction, respectively.

Cooling bottom of the coolant during quenching

23 is closed. After quenching, the valve 18 is switched, supplying air to the cavity 6 and the chamber 11 connected to the atmosphere. The rod 8 moves upwards, the liquid from the tank 12 is pumped into the chamber 10. When the part reaches the upper position, it is removed. 1 il.

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A cooler 24 is placed in the tank 12, and a filter 25 is mounted in the pipe branch 21 to clean the coolant (for example, from scale). The machine works as follows. In the initial position, the part is before starting the inductor during continuous-sequential quenching, carried out moving parts through the inductor from top to bottom. In the specified initial position, air is fed through a three-way pneumatic crane 18 into chamber 6. At the same time, chamber 11 is connected to the atmosphere through the same valve 18. During quenching, the parts switch the valve 18, thereby supplying air to the chamber 11, and the chamber 6 at the same time is connected to the atmosphere. Under the influence of air supplied to the chamber 11, the piston 9 with the rod 8 moves downward, displacing the liquid from the chamber 10. Liquid (water, emulsion, oil) through the pipe 20 and the check valve 22 enters the sprayer 14, cooling the part 16 being moved relative to it. The cooling liquid is collected in the vessel 12. At the same time, the check valve 23 is closed by the liquid in the pipeline with the branch 21. After the part has been quenched, the three-way valve 18 is switched along the whole length (the lower position), supplying air to chamber 6 (under the piston) andatmospheric chamber 11. The rod 8 moves upwards, and the liquid from the tank 12 is pumped through the filter 25 and the check valve 23 into the chamber 10 due to the vacuum created in it. The rod 8 with the detail reaches the upper (initial) position and the detail is removed. The cycle is over. The device is ready for quenching the next part.

Connection with additional piping of the sprayer and tank for

collecting the coolant from the liquid cavity of the pneumatic-hydraulic moving mechanism eliminates the special pumping installation that supplies coolant to the sprayer, reduces the coolant flow (for it uses the same volume), uses the same type of fluid as a process (for cooling parts), and working in the mechanism of movement. All this will provide a reduction in material costs, reducing energy consumption.

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formula of invention

A machine for induction hardening of parts, mainly shafts of constant section, containing a base on which an inductor is installed,

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the sprayer, the coolant collection tank and the pneumohydraulic cylinder, the liquid chamber of which is separated from the air piston rigidly mounted on the rod, is distinguished by the fact that, in order to reduce material and energy costs, it is equipped with a pneumatic cylinder, the rod with piston of which is connected in series with the pneumatic hydraulic cylinder rod, and the upper part of the chamber has an opening, a pipeline with check valves connecting the sprayer, a container for collecting coolant and a fluid chamber of the pneumatic hydraulic cylinder, and a pipeline connecting the pneumatic cylinder air chamber and the lower part of the pneumatic cylinder chamber through a three-way valve with an air line.

Claims (1)

Formula and inventions A machine for induction hardening of parts, mainly of constant section shafts, containing a base on which an inductor, a sprayer, a reservoir for collecting coolant and a pneumohydrocylinder are installed, the fluid chamber of which is separated from the air piston, rigidly fixed to the rod, distinguishing I mean that, in order to reduce thermal and energy costs, it is equipped with a pneumatic cylinder, the rod with 10 piston of which is connected in series with the rod of the pneumatic cylinder, and the upper part of the chamber has it has a hole with a pipeline with non-return valves connecting the sprayer, a reservoir U for collecting coolant and a liquid chamber of the pneumatic cylinder, as well as a pipe connecting the air chamber of the pneumatic cylinder and the lower part of the cylinder chamber through a three-way valve with an air line.