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2005年03月03日

【期刊论文】DEVELOPMENTS AND APPLICATIONS OF TOOL MATERIALSIN HIGH SPEED MACHINING*

艾兴, Ai Xing, Liu Zhanqiang, Zhao.Jun, Dung Jianxin

CHINESE JOURNAL OF MECHANICAL ENGINERING 2002, 15: 171~174,-0001,():

-1年11月30日

摘要

Better and more capable tool materials allow machine tools to cut at increasingly higher speeds and feeds. Inrecent decades, high speed machining has received an important interest as a technological solution for high productivityto increase economic efficiency in manufacturing. The recent developments of cutting tool materials in high speed ma-chining are reviewed. The appropriate applications of the high speed machining technology are presented. It can concludethat the optimal matching of meehardcal, physical, end chemical properties between teol and workpieee materials is veryimportant in high speed machining. The researeh is very grit beneficial to the design and the selection of re431 materials hihigh speed machining.

Tool materials, High speed machining

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2005年03月03日

【期刊论文】高效加工技术及其应用研究

艾兴

中国工程科学,2000,2(11):40~51,-0001,():

-1年11月30日

摘要

在机械加工领域,切削加工是应用最广泛的一种加工方法,其发展方向主要是研究高速切削,对超硬材料加工,主要是发展磨削、超声和放电等高效复合加工技术。文章介绍高效切削加工和高效复台加工技术的理论研究和技术开发与应用及所取得的重要成果,主要包括高建切削基础理论、陶瓷刀具材科研究新体系和超硬材料断续磨、超声和电火花的复台加工理论与技术的研究开发。生产实际应用结果表明,高效加工技术可以大幅度提高加工技率。改善加工表面质量,降低加工成本。

高效加工技术, 高速切削, 陶瓷刀具材料, 断续磨-间隙脉冲放电复合加工, 超声-间隙脉冲放电复合加工

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2005年03月03日

【期刊论文】ADVANCED CERAMIC TOOLS FABRICATED FROM CERAMIC COATED CARBIDE POWDERS

艾兴, X. AI, C.Z. HUANG*, B.Y. WANG and Y.C. CHEN; J. WANG

,-0001,():

-1年11月30日

摘要

An experimental investigation is carried out to coat two types of carbide powders, TiC and (W, Ti) C, with an alumina ceramic using a sol-gel technology. The coated carbide powders are then fabricated into two kinds of new ceramic tool materials by the hot pressing method. A scanning electron microscopy (SEM) observation reveals that the matrix (carbide) grains are uniformly coated with the alumina ceramic and the new tool materials have a homogeneous microstructure. The tests of mechanical properties and wear resistance in machining are finally conducted. It is shown that the new tool materials can increase the tool-life by up to 100% as compared to other ceramic tool materials when machining a mild carbon steel, while the fracture toughness is improved by up to 33%. When compared with a hard coated carbide tool, the new materials exhibit a superior ability in maintaining the wear resistance during the entire tool-life.

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2005年03月03日

【期刊论文】Development of an advanced ceramic tool material-functionallygradient cutting ceramics

艾兴, Ai Xing*, Zhao Jun, Huang Chuanzhen, Zhang Jianhua

Materials Science and Engineering A248(1998)125-131,-0001,():

-1年11月30日

摘要

A model for designing functionally gradient ceramic tool materials with symmetrical distribulion is presented for the first time.fiased on the analysis of slress distribution for ceramic tools in the cutting process, the design of composition dlstrifiution was carried out with the aim of partial relaxation of stresses resuhing from external Ioadings by residual thermal stress in fabricaring process by means of finite element analysis of residual thermal stress for gradient ceramic tool malerials wilh differentcomposirional distributions. The principle for oprimal design was also proposed. An Al2O3/TiC funclionally grodlent ceramic toolmaterial. FG-I. was accordingly synlhesized by hot pressing.

Al2O3/, TiC, Ceramic iool malerials, Composilional diszribulion, Functionally gradient materials, Materials design

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2005年03月03日

【期刊论文】Decomposition and reconstitution principle for complexsurfaces and its applications*

艾兴, HUANG Kezheng, AI Xing and ZHANG Chengrui

SCIENCE IN CHINA (Series E) 1997, 40 (1): 89~96,-0001,():

-1年11月30日

摘要

Though there are already a varlety of models for comples, they are not so convenientneeded in practice. A hlerchical model and the principle of decomposition and reconstitution for complex surfaceshave beem proposed, which have the potential to enhance the support of automated design systems on creative work intelligently. Then the progress made is discused involving the application of the new principle in the following threeareas; conugation sudace calculation, tool path generation in numercally controlled machining, and maching proccessinnovation By re-recognition.

CAD/, CAM,, conjugating surface,, adaptability,, decomposition.,

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    山东大学,山东

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