SU1442384A1 - Method of producing cut-off wheels - Google Patents

Abstract

The invention relates to the manufacture of abrasive cut-off wheels by an electroplating method for cutting semiconductor materials and makes it possible to significantly increase the production of the fabrication process of the wheels. Circular casings are assembled into packages from two enclosures, the first layer of abrasive-containing coating is applied, the enclosures are separated, the packages are reassembled, the bodies are bonded with the ends of the applied coating, the coating is again applied and the packages are dismantled. Such an assembly scheme provides for the formation of a free working space between the housings, which significantly speeds up the coating process. 5 il. , 1 tab.

Description

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The invention relates to the instrumental industry, namely the production of abrasive cutting wheels by electroplating method for semiconductor materials.

The purpose of the invention is to increase the productivity of the manufacturing process of the circles.

In FIG. I package and two wheel housings after applying the first coating, section; in fig. 2 is the same for applying the second coating, section; FIG. 3 is the same, with a coated HX1-1 second coating, section; Fig, 4 - ready circle, cross section; FIG. 5 shows an installation for implementing the method, a fragment.

The proposed method is implemented in the manufacture of diamond cutting wheels with an inner cutting edge, for example, AKVR 422x152x0.3; AKVR 546 184 0.32; 597 203 0.35i are denoted by the irregular diameter of the circle, the diameter of the central holes, the thickness of the metal, mm,

Assemble a set of 50 insulators and 50 packs made up of 2 buildings. The insulators are made in the form of discs with a central hole larger than that of a circle body, with a diameter of Plexiglas 2-4 mm thick. Packages of the kit, tightly squeezing the tantalide ion on the bottom insulator 2. A nickel anode 4 is installed in the center of the resulting container 3. Preparatory operations usual for stainless steel are carried out: degreasing, etching, activating. Then electrolyte is poured into the container 3, abrasive grains are stuck, they are closed when

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If necessary, the capacitance is at the top (not shown in Fig. 1a); an electrical voltage is applied to the casing of the wheels and to the anode (on the basis of creating a current of 1.0-2.0 A / dm of the surface to be coated). The attachment of the abrasive grains and their nickel growth are carried out according to known technical processes, for example, by the method of diamonding in a rotating container with its rotation from horizontal to vertical rotation, for which the capacity is mounted with means of such rotation and rotational drive. Upon application of the first coating 5, the electrolyte is drained, the inside of the set of packages is washed and disassembled. A package of 2 packages is divided by a tearing force. The peripheral part of the package cover breaks without noticeable irregularities in the direction of one or another circle body if the thickness of the coating 6 is not more than 059 of the thickness of the circle body h. Then the circle bodies are again mated into packages, but with the ends from the side of the already applied coating, a set of packages of the same insulators and two newly mated circle bodies is formed and the second abrasive containing coating 6 is again applied, Washed, disassembled the set, section There are pairs of shells with a break in the peripheral layer of the second coating. Here, to avoid one-sided {1 chipping, the thickness of the second coating should be no more than 0.9 h.

The circles manufactured according to the proposed method have the following coating sizes:

All the prepared circles showed a strong grip of the first and second peripheral coatings,

Claims (1)

The formula is about 6 times e) 1 and the method of izg (1 heating of the ryths of the gapvannch g him mt.tsom, with which 3U4 Rum on the peripheral and end surfaces of a package of housings is sequentially applied with an abrasive-containing coating, characterized in that, in order to increase the productivity of the process of making circles, each package consists of two housings that match the end faces. FIG. 2 2384 The surfaces are coated with a surface, and the coating is applied to the peripheral and end surfaces of the package bodies, then the cases are expanded, put and matched with the ends on the coated side, and then the coating is reapplied. Fig.Z Phie.