Diamond composite material and preparation method thereof

Abstract

The invention discloses a diamond composite material and a preparation method thereof. According to the preparation method, diamond particles can be subjected to a full metallurgical reaction with high manganese steel, and the diamond particles are well combined with surrounding iron atoms and alloy element atoms, so that the interface bonding strength of the diamond composite material is improved, and the diamond composite material has good impact resistance and oxidation resistance and also has the excellent characteristics of high hardness, high wear resistance, high corrosion resistance and the like of the reinforced particles. According to the preparation method, mixed powder is prepared by using ultra-micro grinding equipment, and the equipment enables the prepared mixed powder to besmaller in particle size and higher in uniformity and not to be prone to aggregation and agglomeration through the impact force of steel balls, the friction and collision between the steel balls andthe friction between raw materials and convex edges; and the equipment enables the friction force at the two ends to be effectively reduced when a rotating grinding bin rotates, and the equipment maintenance cost and the part replacement cost are reduced while the power loss is reduced.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to a diamond composite material and a preparation method thereof. Background technique [0002] In modern industrial technology, in order to improve the servo life of materials and meet the harsh conditions or applications in new fields, the requirements for improving the performance of materials are getting higher and higher. In addition to sufficient chemical resistance, thermal properties and mechanical properties In addition, high hardness, tensile properties and fracture properties are required, so diamond composite materials are an ideal choice. [0003] Therefore, the patent application number CN201310263986.7 discloses a preparation method of diamond superhard composite material, adding niobium powder and aluminum powder to the titanium-copper alloy, pressing the metal binder into a sheet, and the sheet metal is bonded Put the binder into the bottom of the cylindrical hea...

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Problems solved by technology

[0004] In order to overcome the above-mentioned technical problems, the object of the present invention is to provide a kind of diamond composite material and preparation method thereof: (1) obtain this diamond composite by diamond particles, nickel-chromium alloy powder, binding agent, high manganese steel powder material, so that the diamond particles can fully undergo metallurgical reactions with the high manganese steel, and the diamond particles have a good combination with the surrounding iron atoms and alloy element atoms, thereby improving the interface bonding strength of the diamond composite material and solving the problem of existing diamond composite materials. The combination of the various components is not enough, so that the performance of the composite material is still not good enough; (2) Prepare the mixed powder by using ultra-fine grinding equipment, by placing several steel balls with different volumes on the rotating abrasive Put the pretreated diamond particles and high manganese steel powder into the inner cavity of the rotating abrasive bin, start the drive motor, and the driving motor runs to realize the rotation of the rotating abrasive bin. When the rotating abrasive bin rotates around the horizontal axis , the steel balls, pretreated diamond particles and high manganese steel powder installed in the inner cavity of the rotating abrasive bin will reach a certain height with the rotating abrasive bin under the action of centrifugal force and friction force. When their own gravity is greater than the centrifugal force, they will Breaking away from the inner wall of the rotating abrasive bin, the impact force of the steel balls crushes the pretreated diamond particles and high manganese steel powder. The powder also produces grinding effect, and the pretreated diamond particles and high manganese steel powder will also be refined when sliding on the convex edge, which solves the problem that the particle size of each component of the existing diamond composite material is large and not uniform enough, making each The mixing of the components is not uniform enough, and the problem of agglomeration is prone to occur; (3) by connecting the two ends of the rotating abrasive bin with a load-bearing plate through the rotating shaft, the load-bearing plates at both ends are respectively erected on the first support base and the second support The friction of the two ends of the rotating abrasive bin is effectively reduced when the grinding wheel is inserted into the grooves of the inner cavity of the seat, which solves the problems of large power consumption and high maintenance cost of the existing grinding equipment.

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