How to make a sandblast

Not every metal surface can be cleaned from the oxidation products with traditional tools - a drill with a nozzle or with the help of "Bulgarian". The sandblasting machine qualitatively solves corrosion removal problems with parts of volume or complex geometric shapes. With it, any product covered with rust can be brought to factory mind. Another area of \u200b\u200bapplying such devices is the application of decorative patterns on the surface of glass, metal or plastic with stencils. How to make a sandblasting machine at home, you will learn from this article.

The principle of its work is similar to the action of any sprayer: the air coming down under high pressure captures and carries the sand particles. Blowing down at a high speed of the nozzle installed on the flexible hose of the device, they are knocked out from the surface of the particle of an unnecessary material, the composition of which depends on the target use of the sandblasting machine. It may be rust, old paint, etc.

For independent manufacture of the device, the four components will be needed:

compressor - air source;
sand tank;
air duct;
reinforced hose, equipped with nozzle and nozzle.

The compressor will have to buy. Its performance should be at least 600l / min, and the engine power is at least 3 kW. The motor must be equipped with two piston groups and have forced cooling.

The sand tank is chosen with thick walls. It can be made of an old gas cylinder. In order to provide the necessary parameters of the sandblasting machine, the tank must be thoroughly removed. Its bottom should be a cone-shaped form having an angle of 30-60 degrees at the top. This will provide the best sand outlet from the cylinder.
Modernization is performed as follows:

In the container, part of its bottom is cut into the circle;
From a thick steel sheet, a segment of a circle with an appropriate size is cut out of the grinder;
With the help of welding from it, a cone is made, which then should be boiled into the bottom of the cylinder;
For convenient operation of the device, the container can be equipped with legs made from fittings;
To ensure the release of sand into the air duct of the device at the bottom of its conical bottom, a ball semi-free crane, connected to the proper tee, is collected;
In the upper part of the sand cutting capacitance, it is necessary to cut the hole and cut break in it of a prepared pre-inch carbon pipe in it at the end. To close this neck, the plug of the corresponding diameter is manufactured.
For emergency removal of air from the tank in case of clogging with the sand of the outlet, an additional semi-free crane is installed in the upper part of the cylinder with a surveillance of a special hole for it.

The hose for air-sand mixture and the air duct can be made from the rubber reinforced sleeve with the inner diameter of half the doors. The air duct connects the inlet hole of the tractility tap with air nozzle of the compressor. A hose for supplying an air-sand mixture is put on the outlet opening of the tee. The ends of the hoses are fixed by plumbing clamps.

The outlet of the sleeve of the mixture is equipped with a nozzle for the formation of a working air-sand cone. Due to its rapid wear due to contact with sand departing at high speed, this item is supplied with replaceable ceramic nozzles with a diameter of the outlet holes of 4-5 mm.

All, now the sandblasting device is assembled. When using it, it is necessary to ensure that the hoses are not driving during operation. To protect the face from abrasive particles departing during the processing of products, rust and the like mask with plexiglass. Dust respiratory organs should be protected by an industrial respirator. Comfortable and safe work!