Highly effective deep-grinding process for engineering ceramic material

A technology of engineering ceramics and grinding, which is applied in the direction of grinding/polishing equipment, grinding machines, abrasives, etc., and can solve the problem that the quality of the grinding surface of structural ceramics is difficult to accurately control, the quality of the grinding surface of structural ceramics is difficult to control, and the productivity of high-temperature structural ceramics is low. And other issues

Inactive Publication Date: 2006-06-21
HUNAN UNIV
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AI Technical Summary

Problems solved by technology

[0004] 2. The grinding surface quality of structural ceramics is not easy to control
Due to people's limited understanding of the grinding laws of structural ceramics, it is difficult to accurately control the grinding surface quality of structural ceramics, which seriously affects the practical application of ceramic parts.
[0005] 3. Low productivity of high temperature structural ceramics
Most of the previous research on high-efficiency deep grinding was aimed at plastic materials, and no one in China has conducted research on high-efficiency deep grinding of engineering ceramics. Therefore, it is necessary to conduct in-depth and systematic research on how to use high-efficiency deep grinding technology to achieve low-cost and high-quality processing of engineering ceramics. An important technical problem worth discussing in the research of ceramic grinding

Method used

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  • Highly effective deep-grinding process for engineering ceramic material
  • Highly effective deep-grinding process for engineering ceramic material
  • Highly effective deep-grinding process for engineering ceramic material

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Embodiment Construction

[0053] 99.5% alumina, silicon nitride and yttrium oxide partially stabilized zirconia were selected as grinding ceramic materials, and the Figure 8 The shown device implements the grinding, the spindle power of the test bench reaches 40KW, and the maximum rotation speed is 20000rpm. The driving power of the table motor is 5KW, and the SBS4500 grinding wheel dynamic balancing system is used to dynamically balance the grinding wheel in real time, and the unbalanced amount is <0.1μm.

[0054] The ultra-high-speed resin-bonded diamond grinding wheel is used, and its parameters are shown in the aforementioned Table 1;

[0055] The grinding wheel is trimmed, and the trimming parameters are shown in the aforementioned Table 2;

[0056] Water-based coolant is used, and the supply pressure is 8MPa;

[0057] Grinding process conditions:

[0058] a. Abrasion rate per unit width of grinding wheel: 20mm 3 / mm·s-120mm 3 / mm s;

[0059] b. Wheel speed: 40m / s-160m / s;

[0060] c. Grindi...

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Abstract

The technological process of deeply grinding engineering ceramic material in high efficiency includes: 1. trimming with resin combined super high speed diamond grinding wheel to outer circle jitter not greater than 5 microns and dressing with a dynamic balance system to make the grinding wheel possess dynamic unbalance amount less than 0.1 micron; 2. adopting water base cooling liquid with liquid pressure of 6-10 MPa; 3. grinding in the technological conditions of grinding off rate per unit grinding wheel width 20-120 cu mm / mm.s, grinding wheel linear speed 40-160 m / s, grinding depth 1-6 mm and workpiece feeding speed 0.5-6 mmin. The present invention has high structure ceramic machining efficiency, low ceramic part cost, improved ceramic part surface quality and greatly raised part reliability.

Description

technical field [0001] The invention relates to a grinding process for high-efficiency deep grinding of engineering ceramic materials. Background technique [0002] Engineering ceramics are widely used in mechanical, metallurgical, chemical and other engineering fields due to their superior properties such as high strength, low expansion rate, wear resistance and high chemical stability. Due to the inevitable blank sintering shrinkage and special shape requirements, structural ceramic parts, especially rotating parts, sliding parts and matching parts, need to be machined to meet the accuracy requirements of size and shape and surface roughness requirements. Most of the current ceramic processing methods are ordinary grinding with diamond grinding wheels, which is low in efficiency and high in cost, and increasing the amount of grinding will often cause surface damage to the workpiece, and the processing quality is difficult to meet the requirements. Engineering ceramics hav...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B1/00B24B19/22B24D3/28
Inventor 黄含谢桂芝盛晓敏易了宓海青吴耀黄红武尚振涛王树启
Owner HUNAN UNIV
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