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Copper-based pre-alloyed powder additive for diamond tool and preparation method thereof

A technology of diamond tools and pre-alloyed powder, applied in the field of copper-based pre-alloyed powder additive for diamond tools and its preparation, can solve the problems of reduced strength of matrix material, difficulty in controlling the sharpness of a cutter head, falling off of diamond particles, and the like, and reaches the sintering temperature The effect of reducing, improving microstructure and mechanical properties, improving wear resistance or deformability

Active Publication Date: 2021-03-26
HENAN INST OF ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] During the sintering process of the diamond tool matrix, the binder and the skeleton material dissolve and diffuse each other, and the diffusion process is uncertain, which makes it difficult to control the sharpness of the cutter head. The strength of the base material decreases, causing the diamond particles to fall off. Therefore, it is necessary to manufacture a diamond tool that is sharp, has a good holding effect, and can form a high diamond blade height.

Method used

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  • Copper-based pre-alloyed powder additive for diamond tool and preparation method thereof
  • Copper-based pre-alloyed powder additive for diamond tool and preparation method thereof

Examples

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Embodiment 1

[0032] A copper-based pre-alloyed powder additive for diamond tools, comprising the following raw materials in parts by weight: 85 parts of alloy powder, 2 parts of glass fiber, the chemical composition and mass parts of the alloy powder are: 6 parts of phosphorus, 2 parts of Tin, 20 parts copper, may also include 1 part nickel.

[0033] A preparation method for copper-based pre-alloyed powder additives for diamond tools, comprising the following steps:

[0034] Step 1, preparing alloy powder;

[0035] Step 2, modifying the glass fiber to obtain modified glass fiber powder;

[0036] Step 3, putting the alloy powder obtained in step 1 and the modified glass fiber powder obtained in step 2 into a ball mill for 2 to 4 hours to obtain a pre-alloyed powder additive, and the rotating speed of the ball mill is 500r / min;

[0037] Further, in step one, the preparation steps of alloy powder are as follows:

[0038] S1. After mixing phosphorus, tin, copper and nickel, place them in a ...

Embodiment 2

[0047] A copper-based pre-alloyed powder additive for diamond tools, comprising the following raw materials in parts by weight: 90 parts of alloy powder, 4 parts of glass fiber, the chemical composition and mass parts of the alloy powder are: 7 parts of phosphorus, 3 parts of Tin, 30 parts copper, also includes 2 parts nickel, 0.5 part silicon, 0.05 part hafnium.

[0048] A preparation method for copper-based pre-alloyed powder additives for diamond tools, comprising the following steps:

[0049] Step 1, preparing alloy powder;

[0050] Step 2, modifying the glass fiber to obtain modified glass fiber powder;

[0051] Step 3, put the alloy powder obtained in step 1 and the modified glass fiber powder obtained in step 2 into a ball mill for ball milling for 2 to 4 hours to obtain a pre-alloyed powder additive. The rotating speed of the ball mill is 500r / min. The ball mill can be filled with liquid nitrogen;

[0052] Further, in step one, the preparation steps of alloy powder ...

Embodiment 3

[0062] A copper-based pre-alloyed powder additive for diamond tools, comprising the following raw materials in parts by weight: 95 parts of alloy powder, 5 parts of glass fiber, the chemical composition and mass parts of the alloy powder are: 9 parts of phosphorus, 5 parts of Tin, 35 parts copper, 4 parts nickel, 1 part silicon, 0.1 part hafnium.

[0063] A preparation method for copper-based pre-alloyed powder additives for diamond tools, comprising the following steps:

[0064] Step 1, preparing alloy powder;

[0065] Step 2, modifying the glass fiber to obtain modified glass fiber powder;

[0066] Step 3, putting the alloy powder obtained in step 1 and the modified glass fiber powder obtained in step 2 into a ball mill for 2 to 4 hours to obtain a pre-alloyed powder additive, and the rotating speed of the ball mill is 500r / min;

[0067] Further, in step one, the preparation steps of alloy powder are as follows:

[0068] S1. After mixing phosphorus, tin, copper, nickel, s...

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Abstract

The invention discloses a copper-based pre-alloyed powder additive used for a diamond tool and a preparation method thereof. The copper-based pre-alloyed powder additive comprises the following raw materials including, by weight, 85-95 parts of alloyed powder and 2-5 parts of fiberglass; the alloyed powder is chemically composed of, by mass, 6-9 parts of phosphorus, 2-5 parts of tin, 20-35 parts of copper, and further comprises, by mass, 1-4 parts of nickel, 0-1 part of silicon, 0-0.1 part of hafnium; the fiberglass is modified fiberglass powder; and after the alloyed powder made in a gas-water atomization method and the modified fiberglass powder are subjected to ball milling, the final copper-based pre-alloyed powder additive is prepared. The pre-alloyed powder additive prepared throughthe preparation method is lower in melting point, and a high edge sharpening height of diamond and strong holding force of a matrix to the diamond are guaranteed.

Description

technical field [0001] The invention relates to the technical field of diamond tool manufacturing, in particular to a copper-based pre-alloyed powder additive for diamond tools and a preparation method thereof. Background technique [0002] Diamond tools are used in a wide range of fields, mainly used in stone processing, ceramic modification, geological drilling, oil drilling and mining industries, and also play an important role in construction, building materials, mechanical processing, optical glass and jewelry processing, and electronic and electrical industries. Tools are generally welded by sintered diamond segments and high-strength steel substrates. The performance of the diamond segments as the working layer determines the quality of the tool. The diamond segments are made by mixing diamond particles and matrix materials and then pressing and sintering. As a result, the carcass has the function of enclosing diamonds and matching the properties of the processed mate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/00B22F9/08C22C47/14C22C49/02C22C49/14C22C101/06
Inventor 高雅李丽霞刘建英马海舒孟育博黄玉春
Owner HENAN INST OF ENG
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