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ti 3 sic 2 ‑Co-based diamond ultra-thin saw blade material preparation method

A technology of ultra-thin and saw blades, which is applied in the direction of mechanical equipment, other manufacturing equipment/tools, turbines, etc., can solve the problems of restricting applications and shortening the service life of diamond ultra-thin saw blades, achieve high precision of composition control, and overcome high-speed cutting Performance, process stability and reproducible results

Inactive Publication Date: 2017-05-03
SHAANXI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its shortcomings such as high temperature softening, oxidation, and phase transformation, the service life of diamond ultra-thin saw blades is shortened, and its application in fast cutting (> 1000 rpm) conditions is limited.

Method used

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  • ti <sub>3</sub> sic <sub>2</sub> ‑Co-based diamond ultra-thin saw blade material preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) First, pre-mix titanium powder, silicon powder, graphite powder and aluminum powder according to the molar mass ratio of 2.8:1.3:2.1:0.25 for 1.5 hours, then ball mill the pre-mixed powder for 14 hours under the protection of argon atmosphere, and the ball mill speed is 280 rpm, the ball milling medium is absolute ethanol, the balls and the ball milling tank are made of stainless steel, material: ball: absolute ethanol = 1:19:0.3; the ball mill powder is sintered under the protection of argon atmosphere, The sintering temperature is 1450°C, the holding time is 2 hours, the heating rate is 5°C / min, and the cooling rate is 16°C / min, to obtain Ti 3 SiC 2 powder.

[0025] (2) by mass percentage, take 87% Ti 3 SiC 2 , 9% Co, 4% MBD with an average particle size of 40 μm 8 Artificial diamond, ball milled under the protection of argon atmosphere for 30 hours, the speed of the ball mill is 160 rpm, the grinding balls are hard alloy balls, the material of the ball millin...

Embodiment 2

[0028] (1) Ti 3 SiC 2 Powder preparation is the same as in Example 1.

[0029] (2) By mass percentage, take 89.2% Ti 3 SiC 2 , 7% Co, 3.8% MBD with an average particle size of 40 μm 8 Artificial diamond was ball milled for 26 hours under the protection of an argon atmosphere, the ball mill speed was 180 rpm, and all the other process parameters were the same as in Example 1.

[0030] (3) Put the obtained mixed powder into a special mold for cold pressing, and the forming pressure is 100 MPa; under vacuum conditions, put the cold-pressed green body into a hot-pressing sintering furnace, sinter at 780 ° C, and keep it warm for 6 minutes. When cooling, the cooling rate is 25°C / min.

Embodiment 3

[0032] (1) Ti 3 SiC 2 Powder preparation is the same as in Example 1.

[0033] (2) By mass percentage, take 90% Ti 3 SiC 2 , 6.2% Co, 3.8% MBD with an average particle size of 40 μm 8 Artificial diamond was ball milled for at least 28 hours under the protection of an argon atmosphere, the ball mill speed was 150 rpm, and the remaining process parameters were the same as in Example 1.

[0034] (3) Put the obtained mixed powder into a special mold for cold pressing, and the forming pressure is 100MPa; under vacuum conditions, put the cold-pressed green body into a hot-pressing sintering furnace, sinter at 790°C, and keep it warm for 5 minutes. When cooling, the cooling rate is 30°C / min.

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Abstract

The invention discloses a preparation method for Ti3SiC2-Co based diamond ultra-thin saw blade materials. The method comprises the steps that mixing and ball milling are conducted on titanium powder, silicon powder, graphite powder and aluminite powder according to molar mass ratio, and sintering is conducted on ball-milled powder materials to obtain Ti3SiC2 powder; Ti3SiC2, Co and MBD8 synthetic diamond are weighed according to mass percentage, quantitative liquid paraffin is added into the powder after ball milling is conducted on the powder, and a stirrer is installed to evenly mix the mixture; the mixed powder is filled into a mold for cold press molding, obtained green bodies are filled into a hot press sintering furnace for sintering molding, and the Ti3SiC2-Co based diamond ultra-thin saw blade materials are obtained finally. According to the preparation method for the Ti3SiC2-Co based diamond ultra-thin saw blade materials, Ti3SiC2-Co based powder replaces Co powder to serve as matrix, and under the conditions that the radial bending strength of the prepared diamond ultra-thin saw blade materials is greater than or equal to 980 MPa and the rotation speed is 1000 revolutions per minute, the feed speed, taking processing of corundum with 99.5% purity as an example, is great than or equal to 60 mm / min.

Description

technical field [0001] The invention relates to a preparation method of a diamond wear-resistant material. Background technique [0002] The diamond ultra-thin saw blade material is based on metal, inorganic non-metal, polymer or composite material, with diamond as the reinforcing phase, and is prepared by powder metallurgy technology with energy saving, green, less chips or no chips near net shape. Material. It is widely used in the fine processing of special ceramics, hard alloys, magnetic materials, gemstones and other brittle and hard materials. In response to the current development trend of energy-saving, green and high-efficiency industries in society, higher requirements are put forward for the comprehensive performance and lifespan of diamond ultra-thin saw blades, especially in high-end industrial applications such as aerospace, microelectronics, and micromachining. Thin, high-strength, fast-cutting diamond ultra-thin saw blade. [0003] Co element is used as th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/14B22F5/00
Inventor 董洪峰郭从盛谭宏斌
Owner SHAANXI UNIV OF TECH
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