A kind of burr diamond and preparation method thereof
A technology of diamond and diamond particles, which is applied in the direction of metal material coating process, coating, fusion spraying, etc., and can solve the problems of poor bonding between coating layer and diamond, self-sharpening of diamond tools, and grinding wheel not showing edges, etc. , to achieve the effect of increasing self-sharpening, low production cost and increasing surface area
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[0033] The present invention provides a method for preparing a multi-diamond burrs, the method comprising the steps of,
[0034] The high-temperature molten liquid metal sprayed onto the surface of the diamond particles, cooled to room temperature to give a metal adhered to the surface of diamond particles;
[0035] Adhered on the surface of metal diamond particles are heated as for oxidizing acids to boiling, and boiled for 5 to 12 hours, to completely remove the metal particle surface of the diamond is attached (using a sufficient amount of an oxidizing acid, the metal surface of diamond completely removed), using diamond with distilled water to neutral, i.e., to obtain a multi-diamond burr.
[0036] Wherein said metal is any one of zinc, copper, nickel, cobalt, iron, manganese, lead, chromium, silver, cadmium, tin, palladium and cerium or the like according to any mixture of several; said diamond particles single-crystal diamond;
[0037] The metal powder are, are the particle ...
Embodiment 1
[0069] The particle size of the diamond into the diamond within the chamber D151, gas volume ratio of 1: 0.3 mixed gas of nitrogen and oxygen injection pressure of 5MPa diamond particles; copper powder (99.5% purity, 325 mesh) was heated to an intermediate frequency furnace 1450 ℃ melting of liquid sprayed onto the surface of the diamond by a high pressure spray gun, cooled to room temperature;
[0070] Remove the metal attached to the surface of diamond particles 2Kg into 5000ml beaker, 3000ml concentrated sulfuric acid was added, boiled, and then boiled at this temperature for 7 hours to remove copper, diamond washed with distilled water until neutral. After classification treatment to obtain a product according to the present invention having a large number of different sizes of diamond burrs.
Embodiment 2
[0072] The D91 particle size of the diamond particles within the chamber into diamond, with a gas volume ratio of 1: 0.35 using a mixed gas of nitrogen and oxygen injection pressure of 5.5MPa diamond particles; nickel powder (99.5% purity, 600 mesh) was heated in a furnace IF to 1550 deg.] C melting liquid is sprayed onto the surface of the diamond by a high pressure spray gun, cooled to room temperature;
[0073] Remove the metal attached to the surface of diamond particles 2Kg into 5000ml beaker, 3000ml concentrated sulfuric acid was added, boiled, and then boiled at this temperature for 10 hours, the copper powder was removed, washed with distilled water until neutral diamond. After classification treatment to obtain a product according to the present invention having a large number of different sizes of diamond burrs.
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