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Multilayer brazed diamond tool and manufacturing method thereof

A diamond tool and diamond technology, used in metal processing equipment, manufacturing tools, grinding/polishing equipment, etc., can solve the problems of large diamond particle size and high service life, and achieve the effect of prolonging service life, simple production process and good processing effect.

Active Publication Date: 2017-06-23
LENS TECH CHANGSHA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the diamond tools manufactured by the existing brazing method only have single-layer diamonds, and their service life is longer than that of electroplated diamond tools, and lower than that of sintered diamond tools, and the diamond particle size used is relatively large, so it is only used in various rough machining or low precision requirements. field

Method used

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  • Multilayer brazed diamond tool and manufacturing method thereof
  • Multilayer brazed diamond tool and manufacturing method thereof
  • Multilayer brazed diamond tool and manufacturing method thereof

Examples

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preparation example Construction

[0071] The present invention also provides a kind of preparation method of multilayer brazing diamond tool, comprises the following steps:

[0072] 1) After mixing diamond particles, skeleton particles, alloy solder powder and adhesive, a paste is obtained;

[0073] 2) Compounding the paste obtained in the above steps on the surface of the preheated substrate, heating and curing after airing, to obtain a solidified green body;

[0074] 3) Vacuum brazing the solidified body obtained in the above steps to obtain a multilayer brazed diamond tool.

[0075] The selection and preferred range of materials in the preparation method of the present invention are consistent with the selection and preferred range of materials for the aforementioned multi-layer brazed diamond tools, and will not be repeated here.

[0076] In the invention, the paste is obtained by firstly mixing diamond particles, skeleton particles, alloy solder powder and adhesive.

[0077] In the present invention, th...

Embodiment 1

[0122] see figure 2 , figure 2 A schematic diagram of the shape and size of the diamond tool prepared in Example 2.

[0123] Such as figure 2 As shown, its production steps are as follows:

[0124] 1. Select 45# steel as the matrix material of the diamond tool, and process it into the required matrix structure by mechanical processing. The good substrate is cleaned with acetone, and then placed in a drying oven to preheat to 40-50°C.

[0125] 2. Use copper-based solder powder as the flux for diamond tools. The composition of copper-based solder is Gu-Sn-Ti, and its melting point is about 890°C.

[0126] 3. Select the diamond particle size 170 / 200, clean it with aqua regia and ultrasonic waves, and dry it.

[0127] 4. WC powder is selected as the skeleton structure, and its particle size is 300 mesh.

[0128] (5) First mix the solder, WC, and diamond evenly in a weight ratio of 3:1:1, then add 5-8% of the total weight of the solder and diamond as an organic adhesive, and...

Embodiment 2

[0136] see image 3 , image 3 A schematic diagram of the shape and size of the diamond tool prepared in Example 2.

[0137] Such as image 3 As shown, its production steps are as follows:

[0138] (1) Choose free-cutting iron as the matrix material of the diamond tool, and process it into the required matrix structure by mechanical processing. Among them, the joint between the matrix and the working layer should be processed as rough as possible to increase the bonding strength, and to The processed substrate was cleaned with acetone.

[0139] (2) Nickel-based solder powder is selected as the flux for diamond tools. The composition of nickel-based solder is NiCrBSi, the melting point of the solder is about 960°C, and the particle size is not less than 300#.

[0140] (3) Select the diamond particle size of 170 / 200, clean it with aqua regia and ultrasonic waves, and dry it for later use.

[0141] (4) WC powder is selected as the skeleton structure, and its particle size is...

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Abstract

The invention provides a multilayer brazed diamond tool. The multilayer brazed diamond tool comprises a matrix and a multiple diamond composite layers combined with the surface of the matrix. The multiple diamond composite layers contain diamond particles, framework particles and alloy brazing filler. The diamond particles are disorderly distributed in the multiple diamond composite layers. According to the multilayer brazed diamond tool, the diamond composite layers of the tool contain the multiple layers of diamond particles, so that the service life can be prolonged; furthermore, each diamond composite layer contains a large amount of air holes, the air holes can store cooling liquid, contain chips, discharge chips, prevent burning damage and facilitate diamond exposure, and therefore the diamond tool is continuously sharp; besides, combination between the alloy brazing filler and the diamond is firm, the brazing filler is completely alloyed, so that the uniformity is good, and the performance consistency is high; in addition, the manufacturing technology of the multilayer brazed diamond tool is simple and free of limitation of the dimension and shape of the diamond tool.

Description

technical field [0001] The invention belongs to the technical field of superhard material tool manufacturing and hard and brittle material processing, and in particular relates to a multilayer brazing diamond tool and a preparation method thereof. Background technique [0002] Diamond tools refer to a class of tool products that use diamond particles or powder as the main element. Such tool types include: cutting, grinding, drilling, milling and polishing, etc. Broadly speaking, diamond abrasive paste, rolling saw blades, Cold-set diamond wire drawing dies, cold-set diamond tools, brazed diamond composite sheet tools, etc., also belong to diamond tools. [0003] Diamond tools are divided into three categories according to the bond: resin, metal and ceramic bond diamond tools, and the metal bond process can be divided into several categories such as sintering, electroplating and brazing; Rollers, drums, edging wheels, grinding discs, bowl mills and soft grinding discs, etc. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24D3/32B24D3/34B24D18/00B24D5/00B24D7/18B24D7/00
CPCB24D3/32B24D3/34B24D5/00B24D7/00B24D7/18B24D18/00
Inventor 周群飞饶桥兵廖广春
Owner LENS TECH CHANGSHA
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