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Preparation process of diamond tool

A diamond tool and a preparation technology, which is applied in the field of diamond tool preparation, can solve problems such as easy shedding of diamond particles, stoppage of diamond tool production, and shortened service life, and achieve high sintering reactivity, improved holding force, and good mechanical properties.

Active Publication Date: 2020-07-10
荣成中磊科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the manufacturing process of diamond tools, the matrix alloy powder in the past used copper powder, cobalt powder and nickel powder as the main components, and the content of iron powder was very small. The oxidation resistance of the matrix alloy powder is better, but with the metal The price of cobalt has soared. Diamond tools basically avoid the use of high-priced cobalt resources and use iron instead of cobalt. Because iron powder is easy to oxidize, the matrix alloy powder is easy to oxidize, and the traditional hot-pressing sintering process is used without hydrogen. During the reduction process, when the matrix alloy blank is in the process of batching, mixing, pressing and sintering, when the air humidity in contact with the matrix alloy blank is relatively high, the surface of the matrix alloy blank will absorb a layer of water, and after air oxidation, it will A layer of oxide film is formed, and the shrinkage of the diamond tool after hot pressing and sintering is not enough, the density is greatly reduced, and the strength becomes poor. The diamond particles in the diamond tool are easy to fall off, and the service life is shortened. In severe cases, the diamond tool will be scrapped and the diamond Tools are out of production during the wet season

Method used

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preparation example Construction

[0033] A preparation process of a diamond tool, comprising the following steps:

[0034] Step A, mixing the ethanol-soluble water-soluble polymer binder with the ethanol-soluble non-water-soluble polymer binder to prepare a binder composition that is completely soluble in ethanol and partially soluble in water ;

[0035] Step B, dissolving the binder composition prepared in step A with ethanol to prepare a binder solution;

[0036] Step C, dry mixing the metal pre-alloyed powder and diamond particles to obtain a matrix alloy dry mix;

[0037] Step D, heating and kneading the binder solution prepared in step B and the carcass alloy dry mixture prepared in step C, and then granulating to obtain carcass alloy pellets;

[0038] Step E, pressing and molding the carcass alloy pellets prepared in step D to obtain a carcass alloy blank;

[0039] Step F, soaking and degreasing the carcass alloy blank prepared in step E, and then performing drying and pre-oxidation treatment;

[004...

Embodiment 1

[0079] A kind of diamond tool is prepared according to the following steps:

[0080] Step A, calculated according to the mass percentage, weighed 65% polyethylene glycol (polymerization degree of 2000) and mixed with 35% polyvinyl butyral to prepare a binder combination that is completely soluble in ethanol and partially soluble in water thing;

[0081] Step B, prepare binder solution

[0082] Step B1, according to the mass percentage calculation, weigh 30% of the binder composition prepared in step A and 70% ethanol, put the weighed ethanol into a sealed beaker and heat it to 50°C and keep the temperature constant, turn on the stirrer for ethanol to stir;

[0083] Step B2, adding the weighed binder composition into ethanol, stirring and dissolving, and preparing a binder solution;

[0084] Step C, calculated by volume percentage, weighed 92.5% metal pre-alloyed powder (calculated by mass percentage, the metal pre-alloyed powder was obtained by mixing the following metal powd...

Embodiment 2

[0096] A kind of diamond tool is prepared according to the following steps:

[0097] Step A, calculated according to the mass percentage, weighed 60% polyethylene glycol (polymerization degree of 1500) and mixed with 40% polyvinyl butyral to prepare a binder combination that is completely soluble in ethanol and partially soluble in water thing;

[0098] Step B, prepare binder solution

[0099] Step B1, according to the mass percentage calculation, weigh 30% of the binder composition prepared in step A and 70% ethanol, put the weighed ethanol into a sealed beaker and heat it to 50°C and keep the temperature constant, turn on the stirrer for ethanol to stir;

[0100] Step B2, adding the weighed binder composition into ethanol, stirring and dissolving, and preparing a binder solution;

[0101] Step C, calculated by volume percentage, weighed 92.5% metal pre-alloyed powder (calculated by mass percentage, the metal pre-alloyed powder was obtained by mixing the following metal po...

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Abstract

The invention relates to the technical field of preparation of diamond tools, in particular to a preparation process of a diamond tool. The preparation process of the diamond tool comprises the following steps of A, mixing a water-soluble polymer bonding agent soluble in ethanol and a non-water-soluble polymer bonding agent soluble in ethanol to prepare a bonding agent composition completely soluble in ethanol and partially soluble in water; B, dissolving the bonding agent composition prepared in the step A through ethanol to prepare a bonding agent solution; and C, conducing dry-mixing on metal prealloyed powder and diamond particles to obtain a matrix alloy dry-mixed material. Through the preparation process of the diamond tool, provided by the invention, the compactness of the prepareddiamond tool is effectively improved; meanwhile, the diamond tool is good in mechanical performance and high in flexural strength; and the usability of the diamond tool is improved, and the service life of the diamond tool is prolonged.

Description

technical field [0001] The invention relates to the technical field of diamond tool preparation, in particular to a diamond tool preparation process. Background technique [0002] In the manufacturing process of diamond tools, the matrix alloy powder in the past used copper powder, cobalt powder and nickel powder as the main components, and the content of iron powder was very small. The oxidation resistance of the matrix alloy powder is better, but with the metal The price of cobalt has soared. Diamond tools basically avoid the use of high-priced cobalt resources and use iron instead of cobalt. Because iron powder is easy to oxidize, the matrix alloy powder is easy to oxidize, and the traditional hot-pressing sintering process is used without hydrogen. During the reduction process, when the matrix alloy blank is in the process of batching, mixing, pressing and sintering, when the air humidity in contact with the matrix alloy blank is relatively high, the surface of the matri...

Claims

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Application Information

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IPC IPC(8): B22F5/00B22F1/00B22F3/02B22F3/10B22F9/22C22C1/05C22C1/10C22C26/00C22C30/00
CPCB22F5/00B22F3/02B22F3/1007B22F3/1021C22C26/00C22C30/00C22C1/05B22F9/22B22F1/10
Inventor 高忠麟舒诚
Owner 荣成中磊科技发展有限公司
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