機械外文翻譯---材料制備機械設(shè)計理論中的新趨勢和新問題-機械設(shè)計(已修改)
2025-02-04 06:14 本頁面
【正文】 1 New Trends and Problems in Material Processing Machine Design Theory WANG Ailun ,DUAN Jian ,HUANG Minghui ,ZHONG Jue (College of Mechanical amp。 Electronic Engineering , Central South University ,Changsha 410083 ,Hunan China) Abstract : Based on reviewing the historical background, prospecting for the development trend ,analyzing the plicacy and mechanism and summing up some achievements and experiences in scientific research , several new problems and the possible direction of development in material processing technology and machine are proposed ,such as ,producing new concept materials possessing some specific and extraovdinary properties by means of integrating and coalescing conelative frontier science and technology 。and thereafter a brief discussion is given. Keywords: interface。 extraordinary physical field。 procession machine 。 function material 2 1 The Time Background of Material Processing Machine In the long span of history of human progress ,many tools ,machines and methods were created and a variety of materials with different properties were processed. Materials and its processing have bee one of pillar and driving force of mankind progress. In pace with multi polar petition in current world and people’s striving perseveringly for happier life ,material function goes beyond unceasingly men’s knowledge and imagination ,for example ,cryptic function material ,semiconductor material ,energy material ,vibration absorptive material , super strength aluminum alloy accounting for 70 percent of application of aeronautics and space ,metal foil of 4～ 5μm ,deep drawing plate with anisotropy below 1 percent ,electronic aluminum foil with micro orientation up to 95 percent ,heat resisting aluminum alloy with super strong specific strength used in aeronautics ,space and deep sea ,etc. Thus several important development trends with distinct time features in material processing domain are shaped up as follows : (1) Creating material processing machine with extraordinary physical field for processing material with special texture structures and functions. For example ,applications of thermal energy and mechanical energy are breaking through unceasingly technology limit ,and some non tradition energy ,such as microwave ,chemical energy , bioenergy , etc. , are introduced into material processing procedure one after another ,so that some material processing machines with extraordinary energy circumstance are produced. (2) Breaking through traditional physical limits and integrating melting ,solidifying ,plastic deformation and heat treatment to obtain special function of material and cut down expenses[3 ] . For example ,near shaping material processing technology , such as fast rolling , spraying deposition ,over plastic molding , injection molding , high energy beam ,etc ,is applied. (3) Material processing process is fed ahead in the direction of high speed ,heavy duty and high accuracy online control ,for instance , the rolling speed goes up to 130 ms 1 ,the deformation pressure rises up to 300 MPa ,accuracy of dimension up to ,accuracy of shape up to 0. 1 I ,strength accuracy es up to MPa. For these reasons ,it is necessary for material processing machine design theory to integrate and coalesce ingeniously correlative frontier scien
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