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Brazing-hot pressing diamond tool and manufacturing method thereof

A diamond tool, hot-pressing sintering technology, applied in the direction of manufacturing tools, metal processing equipment, wheels with flexible working parts, etc., can solve the problems of affecting cutting efficiency, insufficient holding force of diamond abrasive grains, and low service life. , to achieve the effect of improving cutting life and cutting speed, excellent cutting effect, and strong chemical metallurgical combination

Active Publication Date: 2011-04-06
ADVANCED TECHNOLOGY & MATERIALS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this method, the diamond abrasive grains are brazed on the peripheral surface of the metal substrate, which solves the problem of insufficient holding force of the diamond abrasive grains on the tool, but also brings new problems: this brazed diamond tool, due to the stickiness of the diamond brazed saw blade The diamond-bonded surface is only the outer peripheral surface of the saw blade, and the product coated with a single layer of superhard material has only one layer of superhard material, and the overall service life is very low; the product coated with multilayer superhard material is very thick due to the superhard material Covered by the solder layer, the cutting effect is not good, which affects the cutting efficiency

Method used

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  • Brazing-hot pressing diamond tool and manufacturing method thereof
  • Brazing-hot pressing diamond tool and manufacturing method thereof
  • Brazing-hot pressing diamond tool and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as figure 1 As shown, there are three layers of diamond in the cutter head structure, which are composed of two different alloy powders. The diamond abrasive grains 11 can be distributed in the brazing alloy layer 1 and the pre-alloyed carcass powder 2 in an orderly manner according to the designer's requirements. Brazing The alloy layer is on the outside of the cutter head. The cutter head structure of this embodiment is put into a vacuum furnace after pre-pressing for hot-pressing sintering. Interactions such as dissolution, diffusion, and compounding occur on the metal matrix interface, thereby forming a strong chemical metallurgical bond between the matrix material on the outer layer of the cutter head and the diamond, while the pre-alloyed matrix layer inside the cutter head firmly wraps the diamond. Inlaid in the metal matrix, the diamond tool of this structure forms a sandwich structure during the cutting process, maintaining an excellent edge-out effect. T...

Embodiment 2

[0030] Such as figure 2 As shown, the present embodiment is a five-layer diamond, a cutter head structure composed of two alloy powders, diamond abrasive grains 11 are evenly and orderly distributed in the brazing alloy powder and pre-alloyed matrix powder according to the designer's requirements, namely Single-layer diamond brazing alloy layers and multi-layer diamond pre-alloyed carcass layers are arranged alternately. Brazing alloy 1 is on both sides of the cutter head, and pre-alloyed carcass 2 is inside the cutter head. The pre-alloyed carcass layer consists of three layers Small flakes are superimposed, and the resulting cutter head is cold-pressed and then put into a vacuum furnace for hot-press sintering.

Embodiment 3

[0032] Such as image 3 As shown, the invention consists of five layers of diamond and a cutter head structure composed of two alloy powders. In this structure, the single-layer diamond brazing alloy layer and the single-layer diamond pre-alloyed carcass layer are alternately arranged, and the outer layer is brazed The alloy layer 1, the second layer is a pre-alloyed carcass alloy layer 2, and the third layer is a brazing alloy layer 1, and the resulting cutter head is cold-pressed and put into a vacuum furnace for hot-press sintering.

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Abstract

The invention relates to a grinding tool, in particular to a brazing-hot pressing diamond tool. The diamond tool consists of a steel matrix and a diamond tool bit, wherein the diamond tool bit consists of a plurality of alloy layers which are vertical to a working surface of the tool bit; the alloy layers are prepared from two alloy matrixes with different formulas by a vacuum hot pressing method; a prearranged diamond abrasive particle layer is arranged inside each alloy matrix layer; outer layers on two sides of the tool bit are brazing alloy matrix layers (1); a single-layer prearranged diamond abrasive particle layer is arranged inside each brazing alloy matrix layer (1); an intermediate layer of the tool bit is a pre-alloying matrix layer (2); and a single-layer or multi-layer prearranged diamond abrasive particle layer is arranged inside the pre-alloying matrix layer (2). The brazing-hot pressing diamond tool solves the problem that a multi-layer brazing tool is covered by a thick solder layer so as to cause low exposure effect and also solves the problem that a sintered diamond tool is insufficient in diamond holding force so as to make the diamond fall off too early. Therefore, the service life of the diamond tool is greatly prolonged and the processing efficiency thereof is greatly improved.

Description

technical field [0001] The invention relates to a tool for grinding, polishing or sharpening, in particular to a brazing-hot pressing sintered diamond tool and a manufacturing 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, mainly used for cutting stone, concrete, PVC, glass, ceramics, crystal, hard alloy and other materials, including diamond saws Chips, diamond wire saw beads, diamond finger milling cutters for engraving, diamond drill bits for drilling. 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. The electroplating process of electroplated diamond tools is simple and easy to make, but there is no firm chemical ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24D13/02B22F3/14
Inventor 罗晓丽赵刚刘一波姚炯斌黄盛林刘少华
Owner ADVANCED TECHNOLOGY & MATERIALS CO LTD
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