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Super-hard cutting blade and preparation method thereof

A cutting blade, superhard technology, used in manufacturing tools, metal processing equipment, grinding/polishing equipment, etc., can solve the problem of high cost, achieve the effect of long service life, strong bonding and good cutting performance

Inactive Publication Date: 2017-05-10
FUNIK ULTRAHARD MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the traditional brazed diamond cutting saw blade preparation process still has its defects. At present, the brazed diamond saw blade still uses vacuum brazing technology, which is limited by the space of the vacuum brazing furnace. There are still problems in manufacturing large-sized cutting blades, and the cost is high.

Method used

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  • Super-hard cutting blade and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The present embodiment provides a kind of preparation method of superhard cutting sheet, it comprises the following steps:

[0024] Preparation of superhard cutting sawtooth: first, sandblasting the cutting sawtooth matrix made of 65 manganese steel to obtain the sandblasted cutting sawtooth matrix; immersing the sandblasted cutting sawtooth matrix in 8wt% hydrochloric acid solution to obtain pickling and cutting the sawtooth substrate; immersing the pickling and cutting sawtooth substrate in an alkali cleaning solution with a temperature of 80°C for 10 minutes; the alkali cleaning solution is NaOH solution and Na 2 CO 3 Mixing of the solution; then the Ni-based solder powder with an average particle size of 10 microns to 200 microns is mixed with diamond particles with an average particle size of 3 microns to 50 microns to prepare a mixed brazing material powder; the mixed brazing The welding material powder is pre-coated on the surface of the cutting sawtooth substra...

Embodiment 2

[0028] This embodiment provides a method for preparing a superhard cutting sheet, and the specific steps are roughly the same as those in Example 1, except that:

[0029] The brazing filler metal powder is Cu-based brazing filler metal powder; the superhard material particles are boron nitride particles; the cutting sawtooth substrate is No. 45 steel; the cutting blade substrate is No. 45 steel.

[0030] This embodiment also provides a superhard cutting blade made by the above preparation method, which includes a cutting blade base 1 made of No. 45 steel and superhard cutting sawtooth 2 welded on the cutting blade base 1; An assembly hole 3 is opened in the center of the cutting disc base 1 . The superhard cutting sawtooth 2 includes a cutting sawtooth base 21 of No. 45 steel and a boron nitride layer welded on the outer surface of the cutting sawtooth base by vacuum brazing.

Embodiment 3

[0032] This embodiment provides a method for preparing a superhard cutting sheet, and the specific steps are roughly the same as those in Example 1, except that:

[0033] The brazing filler metal powder is a combination of Ni-based brazing filler metal powder and Ag-based brazing filler metal powder; the superhard material particles are boron nitride particles; the cutting sawtooth substrate is No. 45 steel; the cutting blade substrate For 45 steel.

[0034] This embodiment also provides a superhard cutting blade made by the above preparation method, which includes a cutting blade base 1 made of No. 45 steel and superhard cutting sawtooth 2 welded on the cutting blade base 1; An assembly hole 3 is opened in the center of the cutting disc base 1 . The superhard cutting sawtooth 2 includes a cutting sawtooth base 21 of No. 45 steel and a boron nitride layer welded on the outer surface of the cutting sawtooth base by vacuum brazing.

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Abstract

The invention provides a preparation method of a super-hard cutting blade. The method comprises the following steps: preparing mixed brazing material powder from brazing filler metal powder with a mean particle size of 10-200 microns and super-hard material granules with a mean particle size of 3-50 microns; then, brazing the mixed brazing material powder on the surface of cutting saw teeth by adopting a vacuum brazing technology so as to prepare super-hard cutting saw teeth; and finally, welding the super-hard cutting saw teeth on a cutting blade matrix, thereby obtaining the super-hard cutting blade. According to the method, the problem that a large-size super-hard cutting blade cannot be made by a vacuum brazing method is effectively solved, chemical and metallurgical bonding among the super-hard material, a brazing alloy material and a metallic matrix interface is realized, and the bonding strength of different material interfaces is improved. The invention further provides a super-hard cutting blade prepared by the preparation method. Bonding among the various interfaces of the super-hard cutting blade is firm, the service life is long, and the super-hard cutting blade can achieve the maximum protrusion value of 70% or higher and has excellent cutting performance.

Description

technical field [0001] The invention relates to the technical field of cutting tools, in particular to a superhard cutting sheet and a preparation method thereof. Background technique [0002] The high hardness and excellent physical and mechanical properties of diamond make diamond tools an indispensable and effective tool for processing various hard materials. At present, diamond tools can be divided into electroplating, sintering and brazing tool products according to manufacturing methods and processes. Diamond tools manufactured by various processes have their own advantages and disadvantages. Among them, the electroplating process of electroplated diamond tools is simple and easy to manufacture, but there is no firm chemical metallurgical bond between the electrodeposited coating metal on the electroplated diamond tools and the interface between the abrasive and the abrasive substrate, and the abrasive is only mechanically coated on the coating and the substrate. Ther...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24D18/00B24C1/08
CPCB24C1/08B24D18/0009B24D18/009
Inventor 马宁李丙文
Owner FUNIK ULTRAHARD MATERIAL
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