SU1084599A1 - Method of applying solution on article surface - Google Patents

Description

This invention relates to the investigation of deformations of surfaces of products by optical methods.

There is a known method of applying a raster on the surface of products, the implication that a metal mesh, p}, is glued or welded onto the surface of the product.

The disadvantage of the method is that the considerable rigidity of the metal mesh introduces an error in the measured strain. In addition, only a single use of metal mesh is possible.

The closest to the proposed technical essence is a method of applying a raster on the surface of the product, which consists in that the product is subjected to a current flow through the heating grid, the electric current is passed through it before the imprint of the product surface is removed, and the C23 grid is removed.

The disadvantage of the known method is that obtaining a mesh print on solid materials (for example, metals) is difficult, since high temperatures are required to heat the surface of the product, which is not always possible. In addition, the accuracy of applying a raster to such materials is insufficient, since the necessary large efforts to press the grid can lead to a distortion of its shape.

The purpose of the invention is to increase the accuracy and strength of the application of the raster.

This goal is achieved in that according to the method of applying a raster on the surface of the product, the conclusion is that a conductive heating grid is applied to the product, electric current is passed through it before the imprint is formed on the product surface and the grid is removed by applying the grid the surface of the product is a layer of low-melting material; after removing the mesh, the formed impression grooves are filled with heat-resistant paint and then the product is heated until the layer of low-melting material is completely removed.

FIG. 1-3. Shows the sequence of application of the raster on the surface of the product.

The product 1 (Fig. 1) applies a layer 2 of low-melting material, then a conductive heating grid 3 (Fig. 2) deposited on a substrate 4 of a dielectric is applied onto It, an electric current is passed through it to form an impression 5 (Fig. 3) on after removal of the mesh 3, the surfaces of the product 1 are filled with the formed ditch 1 and the impression 5 with heat-resistant paint and then after the paint hardens, the product is heated until the layer 2 of low-melting material is completely removed. The resulting grid of heat-resistant paint forms a plant that repeats the shape of grid 3 (reference raster).

The proposed method improves the accuracy and strength of the application of the raster and allows the application of a heat resistant raster on surfaces of any hardness. In addition, the method involves the repeated use of a reference raster, which reduces costs and increases the accuracy of strain measurement.

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Claims (1)

METHOD FOR APPLYING A RASTER ON THE SURFACE OF THE PRODUCT, which consists in applying a conductive heating grid to the product, passing electric current through it until a print is formed on the surface of the product, and removing the grid, characterized in that, in order to increase the accuracy and strength of applying the raster, before applying the mesh is applied to the surface of the product a layer of fusible material, after removing the mesh, fill the formed grooves of the print with heat-resistant paint and then heat the product until it is completely removed. layer of fusible material.