機(jī)械外文翻譯--材料制備機(jī)械設(shè)計(jì)理論中的新趨勢(shì)和新問(wèn)題

1、鄭州航空工業(yè)管理學(xué)院英 文 翻 譯2012 屆機(jī)械設(shè)計(jì)制造及其在自動(dòng)化專(zhuān)業(yè) 1006962 班級(jí)姓 名 郝振興 學(xué)號(hào) 100696208指導(dǎo)教師 賀紅霞 職稱 教授 二О一 二年 三 月 十二 日- 2 - 1 The Time Background of Material Processing MachineIn the long span of history of human progress ,m

2、any tools ,machines and methods were created and a variety of materials with different properties were processed. Materials and its processing have become one of pillar and driving force of mankind progress. In pace w

3、ith multi - polar competition 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 ,s

4、emiconductor 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

5、 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 s

6、everal 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 materia

7、l 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

8、,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 thr

9、ough 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 - net shaping material

10、 processing technology , such as fast rolling , spraying deposition ,over - plastic molding , injection molding , high energy beam ,etc ,is applied.(3) Material processing process is forged ahead in the direction of h

11、igh speed ,heavy - duty and high accuracy online control ,for instance , the rolling speed goes up to 130 m·s - 1 ,the deformation pressure rises up to 300 MPa ,accuracy of dimension up to 0.1μm ,accuracy of shape

12、 up to 0. 1 I ,strength accuracy comes up to 0.1 MPa. For these reasons ,it is necessary for material processing machine design theory to integrate and coalesce ingeniously correlative frontier science and technology