Anti-drop diamond brad and manufacturing process thereof

Abstract

The invention discloses an anti-drop diamond brad, which comprises a cutter bit, a matrix and a base, and is characterized in that: the cutter bit is prepared from uniform powder prepared by mixing a soft matrix material and a superfine diamond in an irregular shape through hot-pressing sinter molding, wherein the soft matrix material consists of the following components in percentage by weight: 15 to 25 percent of copper, cobalt and iron alloy, 45 to 85 percent of bronze powder, 2 to 5 percent of tin powder, 5 to 10 percent of nickel powder, 2 to 5 percent of titanium powder, 2 to 6 percent of zinc powder and a proper amount of filler; the superfine diamond has the concentration of 12 to 25 percent; and a dovetail groove connecting mechanism is arranged on opposite surfaces of the cutterbit and the matrix. The diamond cutter bit is reasonable in components and proportion, the cutter bit has high bending strength and good self-sharpening property, and a holding force of diamond particles is improved; moreover, the dovetail groove connecting mechanism is arranged between the cutter bit and the matrix, so that the diamond cutter bit is firmly connected with the matrix, the phenomenon that the diamond cutter bit drops is avoided, potential safety hazards are eliminated, and the service life of the diamond brad is prolonged.

Description

technical field [0001] The invention relates to a diamond cloth abrasive tool, in particular to a diamond cloth for preventing a diamond cutter head from falling off from a substrate and a manufacturing process thereof. Background technique [0002] figure 1 , figure 2 shows the structure of the existing diamond braid, which is mainly composed of a diamond cutter head 1, a steel substrate 2, a base 3, a bolt 4, and a rubber damping layer 5. Through a graphite mould, the steel substrate and Various metal powders mixed with diamond are sintered at high temperature. The traditional diamond braid, the metal powder composition and ratio of the diamond segment 1 are unreasonable, resulting in poor bending strength and self-sharpening of the diamond segment 1, and the unsatisfactory deformation resistance of the matrix, resulting in the diamond segment 1 Insufficient working stability; in the manufacturing process, it is necessary to carry out ultrasonic treatment on the surfac...

AI Technical Summary

Problems solved by technology

The traditional diamond braid, the metal powder composition and ratio of the diamond segment 1 are unreasonable, resulting in poor bending strength and self-sharpening of the diamond segment 1, and the unsatisfactory deformation resistance of the matrix, resulting in the diamond segment 1 Insufficient working stability; in the manufacturing process, it is necessary to carry out ultrasonic treatment on the surface of the steel substrate 2, but it is still unavoidable that the joint of the integral sintered diamond segment 1 and the steel substrate 2 often falls off, and at the same time, it is necessary to add expensive metal powder as Binding agent

However, this processing technology has low production quality efficiency and high production cost, and the external impact force in the use process is easy to promote the separation of the connection surface between the diamond segment 1 and the steel substrate 2, resulting in the separation of the diamond segment 1 from the steel substrate 2, which poses a safety hazard

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