Abrasive Surface Modification Method for Improving the Processing Finish of Metal-based Abrasives

A surface modification and abrasive technology, applied in metal processing equipment, abrasives, grinding/polishing equipment, etc., can solve problems such as no need for application, failure to improve adhesion, failure of organic carbonization, etc.

Inactive Publication Date: 2011-12-14
云南光电辅料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When hot-press sintering molding or cold-press molding heating and sintering metal bond abrasives are sintered at high temperature, the carbonization of organic matter will fail, and the purpose of improving adhesion will not be achieved, so there is no need for application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Dissolve the WD-52 silicon coupling agent [N-(β-aminoethyl)-γ-aminopropyltriethoxysilane] produced by Hubei Wuda Silicone New Materials Co., Ltd. in absolute ethanol at a concentration of 5%, Add 5% glacial acetic acid and mix evenly to form an impregnation solution. Take half of the same batch of W10 diamond powder and immerse in the impregnation solution for 2 hours, take out the diamond powder and place it in the air for 1 hour, and bake it in an oven at 150°C for 2 hours to obtain the surface organically modified W10 Diamond powder.

[0012] The surface organically modified W10 diamond powder and the W10 diamond powder without surface organic modification are respectively prepared according to the formula of copper 78%, tin 12%, silver 7%, zinc 3%, and W10 diamond powder 3%. , and pressed into a φ10×5 test piece with a pressure of 400MPa, and sintered at 700°C for 1 hour under the protection of hydrogen to obtain a grinding piece.

[0013] At a speed of 2000r / min ...

Embodiment 2

[0015] Take half of the same batch of 230 / 270 cubic boron nitride, preheat and dry it in a high-speed mixer to 110-130°C to remove moisture, and then add 2% (weight ratio) of F-3 produced by Chongqing Jiashitai Chemical Co., Ltd. Super-dispersed aluminate coupling agent (chemical formula is (C3H7O)XAL(OCOR1)m(OCOR2)n(OAB)y), after high-speed stirring for about 5 minutes, the material is discharged, and the surface is organically modified by rapid cooling. W20 cubic boron nitride powder.

[0016] The 230 / 270# cubic boron nitride with surface organic modification and the 240~280# cubic boron nitride without surface organic modification are respectively pressed, copper 78%, tin 12%, nickel 5%, zinc 5% Add 240~280#cubic boron nitride 6% formula to prepare the mixture, and hot press it into a 30×3×4 honing bar.

[0017] The produced honing bar test pieces are made into a group of 6 pieces, and the honing machine spindle speed is 153m / s, the reciprocating speed is 24m / s, and the pr...

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PUM

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Abstract

The invention discloses a method for improving the smoothness of workpieces processed by hot-press sintering molding or cold-press molding heating and sintering metal bond abrasives through organic modification of the abrasive surface, mainly through the activation of organic compounds of silicon, titanium, aluminum, zirconium and boron elements It is used as an agent to modify the surface of diamond, cubic boron nitride, silicon carbide, and corundum abrasive powders to make the surface of abrasive powders organic, and to improve the grinding properties of abrasives when hot-pressed sintering molding or cold-pressing heating and sintering metal bond abrasives are mixed. Dispersion, reducing the probability of abrasives agglomerating into agglomerates and forming large particles, reducing the scratches of large-grained abrasives on the workpiece, thereby improving the smoothness of the processed workpiece.

Description

technical field [0001] The invention relates to an improved process for producing hot-pressed sintered or cold-pressed heated and sintered metal bond abrasives, in particular to a method for improving the processing smoothness of hot-pressed sintered or cold-pressed heated and sintered metal bonded abrasives . Background technique [0002] Although hot-press sintering molding or cold-press molding heating and sintering metal bond abrasives have the advantages of good surface shape retention and long service life, their application in ultra-precision machining is limited due to their lower processing finish than resin abrasives. For hot-press sintering molding or cold-press molding heating and sintering metal bond abrasives, in addition to selecting fine-grained abrasives, the most important consideration is how to control the particle size distribution and grade (crystal form) of abrasives during abrasive sorting. Patent CN2387981Y introduces a leaf spring support device fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24D18/00B24D3/34B24D3/06
Inventor 句红兵杨俊宏李妹明和光马杰
Owner 云南光电辅料有限公司
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