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Preparation method for brazed diamond tool

A diamond tool and diamond technology, applied in the direction of metal processing equipment, manufacturing tools, welding equipment, etc., can solve the problems of workpiece surface quality influence, diamond thermal damage, high melting point, etc., to improve self-lubrication and self-sharpening, improve Effects of performance and lifespan, lifespan Environmental pollution

Inactive Publication Date: 2019-01-18
BENGBU COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nickel-based brazing filler metal is one of the three commonly used brazing filler metals (Ni-, Cu-, Ag-) for preparing brazing diamond tools. After diamond welding, the thermal damage of diamond (graphitization, chemical erosion, residual stress) is serious, which seriously reduces the service life of brazed diamond tools; the nickel-based solder itself has high hardness and good wear resistance, and the diamond and brazing layer cannot maintain Appropriate grinding ratio, the self-sharpening of diamond tools is poor in the later stage of use; the brazing layer does not have self-lubricating properties, and a large amount of heat is generated during the use of brazed diamond tools, which cannot be transferred quickly, which has a serious impact on the quality of the processed surface of the workpiece

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A method for preparing a brazed diamond tool, comprising the following steps, step 1: using No. 45 steel to prepare a brazed diamond tool substrate by mechanical cutting, and using a grinding wheel to grind the surface of No. 45 steel to remove rust and oil stains .

[0020] Step 2: Add diamond micropowder to the brazing material Ni-Cr-B-Si nickel-based alloy of the brazing diamond tool, and use a ball mill to mix the added micronized diamond and the brazing material Ni-Cr-B-Si nickel-based alloy evenly.

[0021] Step 3: Use acetone to clean the tool base 45 steel and diamond (600 μm in size) for 10 minutes respectively in an ultrasonic cleaner, and then dry them in the air for later use; according to the size of the surface area of ​​the tool base 45 steel, add micropowder diamond ( The Ni-Cr-B-Si alloy with a size of 10 μm and a mass fraction of 2%) is evenly mixed and arranged on the surface of the tool substrate No. 45 steel, and then the diamond is evenly placed on...

Embodiment 2

[0024] A method for preparing a brazed diamond tool, comprising the following steps, step 1: using No. 45 steel to prepare a brazed diamond tool substrate by mechanical cutting, and using a grinding wheel to grind the surface of No. 45 steel to remove rust and oil stains .

[0025] Step 2: Add diamond micropowder to the brazing material Ni-Cr-B-Si nickel-based alloy of the brazing diamond tool, and use a ball mill to mix the added micronized diamond and the brazing material Ni-Cr-B-Si nickel-based alloy evenly.

[0026] Step 3: Use acetone to clean the tool substrate No. 45 steel and diamond (400 μm in size) for 10 minutes respectively in an ultrasonic cleaner, and then dry them in the air for later use; according to the surface area of ​​the tool substrate No. 45 steel, micropowder diamond ( The Ni-Cr-B-Si alloy with a size of 5 μm and a mass fraction of 1%) is evenly mixed and arranged on the surface of the tool substrate No. 45 steel, and then the diamond is evenly placed o...

Embodiment 3

[0029] A method for preparing a brazed diamond tool, comprising the following steps, step 1: using No. 45 steel to prepare a brazed diamond tool substrate by mechanical cutting, and using a grinding wheel to grind the surface of No. 45 steel to remove rust and oil stains .

[0030] Step 2: Add diamond micropowder to the brazing material Ni-Cr-B-Si nickel-based alloy of the brazing diamond tool, and use a ball mill to mix the added micronized diamond and the brazing material Ni-Cr-B-Si nickel-based alloy evenly.

[0031] Step 3: Use acetone to clean the tool base 45 steel and diamond (300 μm in size) for 10 minutes respectively in an ultrasonic cleaner, and then dry them in the air for later use; according to the surface area of ​​the tool base 45 steel, add micropowder diamond ( The Ni-Cr-B-Si alloy with a size of 15 μm and a mass fraction of 3%) is evenly mixed and arranged on the surface of the tool substrate No. 45 steel, and then the diamond is evenly placed on the surface...

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Abstract

The invention provides a preparation method for a brazed diamond tool. The method comprises the steps that firstly, a brazed diamond tool base body is manufactured; brazing filler metal of the brazeddiamond tool is prepared; the tool base body, diamond and the brazing filler metal are prepared into a brazed sample; finally, a brazing mode of a vacuum method or a protective atmosphere method is adopted for preparing the brazed diamond tool. According to the method, the thermal damage degree of the diamond in the process of preparing the brazed diamond tool is reduced, the self-lubrication andself-sharpening performance of a brazing layer in the using process are improved, therefore the performance of the brazed diamond tool is improved, and the service life of the tool is prolonged.

Description

Technical field: [0001] The invention relates to the technical field of superhard material tool manufacturing, in particular to a method for preparing a brazed diamond tool. Background technique: [0002] Compared with electroplated and sintered diamond tools, brazed diamond tools have the characteristics of high bonding strength, high diamond exposure, long tool life, and no environmental pollution, attracting a large number of domestic and foreign experts and manufacturers for research and development. Nickel-based brazing filler metal is one of the three commonly used brazing filler metals (Ni-, Cu-, Ag-) for preparing brazing diamond tools. After diamond welding, the thermal damage of diamond (graphitization, chemical erosion, residual stress) is serious, which seriously reduces the service life of brazed diamond tools; the nickel-based solder itself has high hardness and good wear resistance, and the diamond and brazing layer cannot maintain If the grinding ratio is su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K1/19B23K1/20
CPCB23K1/19B23K1/20
Inventor 孟普王琳
Owner BENGBU COLLEGE