A kind of preparation method of diamond wire saw beading based on brazing

Abstract

The invention discloses a method for preparing brazing-based diamond wire saw beads. In step A, metal brazing material, diamond particles and water-based binder are heated and kneaded, and then granulated to form a carcass injection molding feed; step B, setting the carcass injection molding feed and the metal matrix in the same mold and injecting them into one body through an injection molding machine; step C, performing water degreasing treatment on the beaded blank; step D, performing vacuum heating on the beaded blank first Degrease, then heat up to brazing temperature and sinter under pressure to make diamond wire saw beads. It greatly saves energy consumption, simplifies the process, reduces the amount of precious metal used in the alloy matrix, improves the bonding strength between the metal matrix and the metal brazing material and the holding force of the metal brazing material on the diamond particles, and avoids the existing diamond brazing In the process, the brazing material has low holding force on diamond particles and the thickness and uniformity of the metal brazing material cannot be precisely controlled.

Description

technical field [0001] The invention relates to the field of diamond wire saw beads, in particular to a brazing-based preparation method for diamond wire saw beads. Background technique [0002] The diamond wire saw is made of cylindrical diamond wire saw beads strung on the wire rope, and then each diamond wire saw bead is fixed through a rubber-plastic spacer to form a complete diamond wire saw, in which the cylindrical diamond wire saw beaded It is composed of a cylindrical matrix and a diamond alloy matrix containing diamond particles on the periphery of the matrix. The diamond alloy matrix can be made by brazing process. The existing technology is to use brazing flux to make the brazing material into a paste, and then use a thin metal sheet or a small brush to apply the brazing material on the substrate. Degreasing and derusting must be carried out, especially the brazing part, which can also be sandblasted, and then sprinkle the diamond on the brazing filler metal, an...

AI Technical Summary

Problems solved by technology

[0003] In the existing brazing process, the thickness and uniformity of the coating of the brazing material on the substrate are all controlled by the experience of the technicians, and precision cannot be achieved. Before sintering, the brazing material must be kept moist. If the brazing material is dry, it will not stick. diamond particles

In the existing brazing process, the brazing material needs to use a large amount of precious metals to wrap and hold the diamond particles, and because the brazing material is not evenly distributed on the substrate, the holding force on the diamond particles is reduced, and the cutting of the diamond wire saw beads prepared Low efficiency and short service life

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