SU996216A1 - Method of sawing stone-like material - Google Patents

Description

The invention relates to the building materials industry and can -, be used in the manufacture of plates with a decorative surface.

There is a known method of cutting hard and brittle materials with diamond discs, including the securing of the workpiece to the holder by hardening with a mass followed by its smelting Ll3.

There is also known a method of sawing a stone material, which includes molding it into a single block by means of a connecting material and then cutting the block into separate plates L21.

A disadvantage of the known methods is the low cutting quality when using the method in the continuous production of sawing.

The purpose of the invention is to improve the quality of cutting when using the method in mass production of sawing.

This goal is achieved by the fact that during the molding of rubble into a single block on one side of the block, a layer of a binding low-melting substance is created, and the block is sawed from the side opposite to this layer.

the ratio of thicknesses to which the maximum fraction size of rubble is equal to O, 2-2, followed by melting and removal of the binder.

The method is carried out as follows.

A single block is molded, filled into the Fractionated stone form and filled with a bond between a low-melting substance, the level of which exceeds the level of the filled stone. This forms a layer of low-melting substance, the ratio of the thickness of which

15 to the maximum size of the stone fraction is 0.2-2. Then, the resulting block is sawn with a storb, opposite to the layer of low-melting substance, with thin cutting wheels, the entire surface of which is completely cooled. The cut plates are heated to melt and remove the fusible binder. The resulting stone pieces are used to de-surface surfaces, such as concrete slabs.

The table shows examples of choosing the thickness of a layer of a low-melting substance depending on the type of coupling and transport conditions.

cut block in mass production.

Example. The crushed stone of the 2030 mm fraction is poured into the mold and is paraffinized, the level of which is 3-5 mm higher than the level of the crushed stone. After the paraffin has hardened, the block is removed from the mold, turned over by 180 and cut into circles with a thickness of 0.7 mm, the distance between which does not exceed 2-3 mm (an order of magnitude less than the fraction of crushed stone being cut). The cutting speed is 35-65 m / s. During cutting, the whole of the circles is cooled 5-. 10% soda solution in water. At the end of the cutting, the paraffin melts.

Lamellar,

Granite conveyor with

fractions

15-20 plate cladding

Marble

L

fractions

20-40

Granite

urethane

fractions

40-50

Rubber conveyor

Chloroparaffin

The method allows cutting of material of any fraction, thus obtaining a high-quality surface. It is possible to include a cutting operation in a line for the production of reinforced concrete products with a decorative surface, since the layer of low-melting substance eliminates the danger of cutting the transporting organ 60, creating a protective layer. In addition, the performance of products with a decorative surface is improved by reducing the cutting performance .65

0.25

80

0.5

25

Claims (2)

Invention Formula The method of sawing stone material, mainly rubble, including molding it into a single block by means of a binder and subsequent sawing of the block into separate plates, characterized in that, in order to improve the quality of the cut when using the method in the continuous production of sawing On one side of the block they create a layer of light alloy binder 9962166 Who substances, and sawing block Sources of information lead from the opposite side is taken into account in the examination mu SLO, the ratio of the thickness of which1. USSR author's certificate to the maximum, the size of the fraction of scheba - 423657, cl. B 28 D 1/00, 1972 .. n is 0 / 2-2, followed by 2. USSR author's certificate melting and removing the binder. 5 tt 97730, cl. B 28 D 1/02, 1953 ; .(prototype).