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Grinding methods and abrasive products

A technology for abrasive products and grinding wheels, applied in abrasives, grinding/polishing equipment, grinding machines, etc., can solve problems such as reducing the grinding of polycrystalline diamond layers

Active Publication Date: 2017-03-29
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Additionally, the tungsten carbide substrate carries the grinding wheel, which reduces the ability of the grinding wheel to further grind the polycrystalline diamond layer

Method used

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  • Grinding methods and abrasive products
  • Grinding methods and abrasive products
  • Grinding methods and abrasive products

Examples

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example

[0019] Objects and advantages of the present invention are further illustrated by the following non-limiting examples. The particular materials and amounts thereof, as well as other conditions and details, recited in these examples should not be construed to unduly limit this invention. All parts, percentages, ratios, etc. in the examples are by weight unless otherwise indicated.

[0020] Inventive and comparative grinding wheels were prepared using the following materials.

[0021] Table 1: Components

[0022]

[0023]

[0024] The grinding wheels of Examples 1, 7, 9 to 14 and Comparative Examples 1A to 6A were prepared and tested to evaluate their grinding performance on PDC. Example 1 and Comparative Example 1A were evaluated under different grinding wheel dressing procedures. The weight percentage composition of each grinding wheel is shown in Table 2.

[0025] General procedure for forming grinding wheel parts

[0026] Each composition listed in Table 2 was...

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Abstract

The invention relates to a resin bond grinding wheel suitable for grinding polycrystalline diamond composite sheets. The resin bond grinding wheel uses a high concentration of diamond by volume percentage, and a mixture of hard filler particles and soft filler particles to effectively grind polycrystalline diamond compacts, and simultaneously eliminate or reduce the appearance of continuous dressing resin bond grinding wheels. Superficial needs.

Description

Background technique [0001] A polycrystalline diamond compact (PDC) includes a layer of polycrystalline diamond bonded to a tungsten carbide substrate. The polycrystalline diamond layer provides high hardness and wear resistance, while the tungsten carbide layer improves the toughness of the composite. PDCs are commonly used as cutting bits for exploration drill bits used to drill holes to the earth's surface for natural resources. [0002] Resin bonded grinding wheels with diamond grit can be used to grind and finish PDC to its final specified dimensions. PDC is extremely difficult to grind due to the interface of two materials of dissimilar hardness. Due to the extremely high hardness of the polycrystalline diamond layer, the diamond abrasive in resin bonded grinding wheels deactivates very quickly. In addition, the tungsten carbide substrate carries the grinding wheel, thereby reducing the ability of the grinding wheel to further grind the polycrystalline diamond layer. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24D3/10B24D3/20B24D11/04
CPCB24D3/30B24D3/344B24D3/346B24B5/22B24D3/10B24D3/28
Inventor 雅努什·哈伊杜克詹姆斯·L·麦卡德尔
Owner 3M INNOVATIVE PROPERTIES CO