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Composite plated diamond grit for iron-based binding agent

An iron-based bond, diamond technology, applied in other chemical processes, chemical instruments and methods, etc., can solve the problems of erosion, low blade height, poor holding force, etc., and achieve the effect of improving strength

Inactive Publication Date: 2018-03-06
HENAN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to improve the shortcomings of the existing diamond abrasive grains which are easily corroded by iron-based metals, and the surfac

Method used

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  • Composite plated diamond grit for iron-based binding agent
  • Composite plated diamond grit for iron-based binding agent

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Experimental program
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Effect test

Embodiment 1

[0017] Embodiment 1: see figure 1 As shown, there is a vanadium carbide layer 2 on the surface of the diamond 1 , a vanadium layer 3 on the surface of the vanadium carbide layer 2 , a nickel layer 4 on the surface of the vanadium layer 3 , and silicon carbide particles 5 are embedded in the nickel layer 4 .

Embodiment 2

[0018] Embodiment 2: A vanadium carbide layer 2 is coated on the surface of a 40 / 50 mesh diamond 1, a vanadium layer 3 is provided on the surface of the vanadium carbide layer 2, a nickel layer 4 is provided on the surface of the vanadium layer 3, and silicon carbide particles 5 are embedded in the nickel layer 4, The total thickness of vanadium carbide layer 2, vanadium layer 3 and nickel layer 4 embedded with silicon carbide particles 5 is 13.6 μm, wherein silicon carbide particles 5 with a particle size of 50 nm are embedded, such as figure 2 As shown, the surface of the abrasive grains has irregular uneven surface morphology. The abrasive grains and the iron-based binder are made into agglomerates by hot pressing and sintering, and the bending strength reaches 112.3MPa, while the uncoated diamond The anti-bending strength of the iron-based bond agglomeration is 84.5MPa, and the cutting edge height of this abrasive grain is 35% higher than that of uncoated diamond abrasive ...

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Abstract

The invention discloses composite plated diamond grit for an iron-based binding agent and belongs to the field of mechanical processing. The composite plated diamond grit comprises a diamond, a vanadium carbide layer, a vanadium layer, nano silicon carbide granules and a nickel layer, wherein the surface of the diamond is plated by the vanadium layer; the vanadium carbide layer is formed between the vanadium layer and the surface of the diamond; the outer surface of the vanadium layer is plated by the nickel layer into which the silicon carbide granules are embedded. By adopting the compositeplated diamond grit, the diamond is prevented from corrosion of iron-based metals, the holding property of the binding agent to grit is improved, the grit protrusion height is increased, and the strength of a product is improved.

Description

technical field [0001] The patent of the present invention relates to the field of mechanical processing, especially a composite coated diamond abrasive grain for iron-based binder. Background technique [0002] Diamond with ultra-hardness and ultra-high thermal conductivity is an ideal abrasive for stone processing, geological exploration, etc. However, due to the high interfacial energy between diamond with a covalent bond structure and general metals, it is difficult to form a chemical bond between the general metal bond and the diamond abrasive, but the mechanism is mainly based on the mosaic effect, making the bond The agent does not have enough holding force on the diamond, and the diamond abrasive grains are easy to fall off and lose during use, which not only shortens the service life of the diamond tool, but also affects the processing efficiency. In the manufacture of diamond metal products, since iron-based metal binders will strongly corrode diamond, the current...

Claims

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Application Information

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IPC IPC(8): C09K3/14
Inventor 肖长江窦志强栗正新
Owner HENAN UNIVERSITY OF TECHNOLOGY