SU1096477A1 - Device for preparing containers for heat treatment of parts in gas medium - Google Patents

Abstract

A DEVICE FOR PREPARING CONTAINERS FOR THERMAL TREATMENT OF DETAILS IN GAS MEDIUM, containing a container with a lid and a powder shutter and a gas supply system, characterized in that, in order to save the gas environment and improve the quality of processing, it is equipped with a cap covering the cover of the container with a gasket and covering the container with a cover. a closed sealed cavity; and an evacuation system connected to the closed cavity and the container cavity. 20

Description

The invention relates to the heat treatment of products made of various metals and the alloy, in particular, to devices for heating products in a non-sour or active medium during their thermal or thermal and thermal treatment.

A container for heat treatment of products is known, comprising a housing, a lid and a circular pocket of a powdered seal located in the upper part of the housing ClJ.

The closest in technical essence and the achieved result to the proposed is a device for preparing a container for chromium plating of metal surfaces, comprising a container, a lid, a circular pocket of a powder shutter and a supply system for a 1-phase medium G2 J

The disadvantage of such devices for the preparation of containers is the large unproductive gas consumption for the removal of air from the container. In addition, if internal cavities are bored in the products, there is no guarantee that air will be completely removed from the nickname when the container is purged with gas, which may result in deterioration of the quality of processed products.

The purpose of the invention is to save the gas environment and improve the quality of processing.

The goal is achieved by the fact that a device for preparing container containers for heat treatment of parts in a gaseous medium, containing a container with a lid and a powder shutter and a delivery system. gas environment, provided with a cap covering the gate of the container with the shutter to form a closed hermetic cavity, and a vacuum system connected to the closed cavity and the cavity of the container.

The drawing shows a diagram of the device preparation of containers.

The case of container 1 with powder-type different shutter 2 and collet 3 is provided with a cap 4 with a rubber rubber mechanical seal 5 on top. The space under the cap 4 is connected by pipeline 6 and vent.il 7 with pipeline 8 of container 1 1. A vessel is connected to the container 1 container 9 with liquid (for example, water, oil). A vacuum pump 10 with vacuum 1 meter 11 and filter 12 with pipe 13 and valve 14 is connected to pipeline b, which is further through valve 7, the rotameter 15 and the gear 16 is connected to a gas source, such as a balloon 17 with argon. In front of the rotameter 15 there is a manovacuummeter 18.

The device works as follows.

After loading the articles into the container, the lid 3 is closed with a powder seal. In doing so, the valve 19 must be open and the end of the tube should not touch the liquid in the vessel to eliminate the back pressure when closing the lid. After the powder shutter is sufficiently compacted, the container is covered with a cap 4. The valve 20 is closed, and through the valve 21, compressed air is fed into the annular cavity of the pneumatic seal, as a result of which the rubber ring encloses the container tightly around it.

Then the valve 19 is closed, and the vessel 9 is filled with liquid (for example, water, oilJ to the level of the required pressure in the container when it is filled with gas. The valves 7 and 14 are opened and the vacuum pump 10 is turned on. Since the pipes 6 and 8 are interconnected, pressures on both sides of cover 3 do not occur and the powder valve is not disturbed. When the required vacuum is reached, valve 14 is closed and vacuum pump 10 is turned off. Then gear 16 is opened and VS. The system is filled with argon on both sides of cover 3, which eliminates penetration pressure drop and disruption of the powdered valve. Argon is fed to a pressure slightly above atmospheric is by manometers.

With a slight overpressure of the gas, the valve 19 opens and the system establishes an overpressure corresponding to the level of tube immersion in the liquid of the vessel 9. Then shut off the valves 7 or 21 and open the valve 20 to relieve the pressure in the pneumatic seal. After that, I remove the cap 4 from the container, disconnect the smart hose 22 from the valve 7, and put the container with the products into the furnace for the necessary heat treatment when the gas is supplied in the prescribed mode. The freed cap 4 with pipes b and 13, the vacuum pump 10 Bakuumg. Ether 11 and the filter 12 are used to evacuate other containers.

Welding pockets for powder-dry shutter from the inside of the container, not from the outside, like. Usually, it provides the possibility of sealing the lid 4 on the more rigid wall of the container. However

310964774

the presence of welded seams is affordable iz. The use of the proposed container construction eliminates the effect of the container saves

possible leakage of seams in the amount of at least 5-10 gas

vacuuming. multiple container volume.

Claims (1)

DEVICE FOR PREPARING CONTAINERS FOR THERMAL PROCESSING OF PARTS IN A GAS MEDIUM, containing a container with a lid and a powder shutter and a gas supply system, which is equipped with a cap to save the environment and improve the quality of the ki a container lid with a shutter to form a closed airtight cavity, and a vacuum system connected to the closed cavity and the container cavity. f with gas treatment of cotton wool in a- M