出版時(shí)間:2009-8 出版社:大連理工大學(xué)出版社 作者:肖偉平,謝英星 主編 頁(yè)數(shù):145
內(nèi)容概要
《模具專(zhuān)業(yè)英語(yǔ)》(第二版)是新世紀(jì)高職高專(zhuān)教材編審委員會(huì)組編的模具設(shè)計(jì)與制造類(lèi)課程規(guī)劃教材之一?! 「母镩_(kāi)放以來(lái),我國(guó)的模具制造行業(yè)不斷發(fā)展壯大,與國(guó)外同行之間的業(yè)務(wù)交往以及大量的模具技術(shù)設(shè)備的引進(jìn)也隨之增多,模具專(zhuān)業(yè)英語(yǔ)的應(yīng)用越來(lái)越廣泛。對(duì)于模具專(zhuān)業(yè)的大中專(zhuān)學(xué)生和從事模具設(shè)計(jì)與制造的工程技術(shù)人員來(lái)說(shuō),熟練掌握模具行業(yè)的英語(yǔ)技能是非常必要的。模具技術(shù)涉及高分子材料、模具金屬材料、模具結(jié)構(gòu)、成型加工設(shè)備等諸多領(lǐng)域,模具專(zhuān)業(yè)所涉及的科技英語(yǔ)詞匯和語(yǔ)句等雖常見(jiàn)于各專(zhuān)業(yè)文獻(xiàn)中,但難以全面、系統(tǒng)地反映模具材料、設(shè)備及工藝的內(nèi)在聯(lián)系?! ”窘滩膶⒆髡咴谀>咝袠I(yè)的工程實(shí)踐與其在高職教育領(lǐng)域長(zhǎng)期的教學(xué)體會(huì)相結(jié)合,有針對(duì)性地選擇了塑料模具和沖壓模具方面的專(zhuān)業(yè)技術(shù)文章和相關(guān)技術(shù)資料進(jìn)行組織編寫(xiě),所選文章涵蓋了模具材料、注塑機(jī)器、模具結(jié)構(gòu)、模具加工設(shè)備及加工技術(shù)等方面的知識(shí)?! ”窘滩墓卜治鍌€(gè)單元,分別敘述了模具材料、注射模具設(shè)計(jì)、鍛壓成形及模具設(shè)計(jì)、模具加工技術(shù)、模具報(bào)價(jià)與結(jié)算方面的內(nèi)容,大部分文章選自相關(guān)專(zhuān)業(yè)教材或相關(guān)專(zhuān)業(yè)刊物原文。全書(shū)圖文并茂,與專(zhuān)業(yè)課程聯(lián)系緊密,每課課文后都附有新單詞、詞組注釋、互動(dòng)練習(xí)等模塊。其中互動(dòng)練習(xí)模塊的內(nèi)容是在前一版的基礎(chǔ)上新增的,實(shí)用性較強(qiáng),著重訓(xùn)練學(xué)生的歸納和總結(jié)能力,加強(qiáng)學(xué)生對(duì)專(zhuān)業(yè)知識(shí)的理解,方便教師與學(xué)生在課堂上的交流互動(dòng),同時(shí)也可提高學(xué)生的學(xué)習(xí)興趣。為擴(kuò)大學(xué)生的閱讀范圍并補(bǔ)充知識(shí)量,本教材在每一篇課文后都安排了閱讀材料,以供學(xué)有余力的學(xué)生閱讀,也可選擇其中部分內(nèi)容作為課后作業(yè)?! ?本教材可作為高等職業(yè)院校、高級(jí)技師學(xué)院模具設(shè)計(jì)與制造等相關(guān)專(zhuān)業(yè)的教材,也可供相關(guān)工程技術(shù)人員參考使用。
書(shū)籍目錄
Unit One Mold Materials Lesson 1 Polymers Lesson 2 Mold Materials Lesson 3 Selection of the SteelUnit Two The Injection Mold Design Lesson 4 The Injection Molding and Machine Lesson 5 Three-plate Mold Lesson 6 Feed System Lesson 7 Mold Cavities and Cores Lesson 8 Ejection System Lesson 9 Splits Lesson 10 Mold Cooling Lesson 11 Runnerless Molds Nozzle TypeUnit Three Press Process and Die Design Lesson 12 Stamping and Punching Dies, Compound Die Design Lesson 13 Extrusion Lesson 14 Forging ProcessesUnit Four Manufacturing Technology of Mold Lesson 15 Numerical Control Lesson 16 Electric Discharge Machining Lesson 17 Wire Electrical Discharge Machining(Wire EDM)Unit Five Quotation and Contract for Mold & Die Lesson 18 Introduction of Quotation for Mold Lesson 19 Mold Making Contract基本詞匯表參考文獻(xiàn)
章節(jié)摘錄
An alloy is a partial or complete solid solution of one or more elements in a metallic matrix. Complete solid solution alloys give single solid phase microstructure, while partial solutions give two or more phases that may be homogeneous in distribution depending on thermal (heat treatment) history. Alloys usually have different properties from those of the component elements. Alloying one metal with other metal(s) or non metal(s) often enhances its properties. For instance, steel is stronger than iron, its primary element. The physical properties, such as density, reactivity, Youngs modulus, and electrical and thermal conductivity, of an alloy may not differ greatly from those of its elements, but engineering properties, such as tensile strength and shear strength may be substantially different from those of the constituent materials. This is sometimes due to the sizes of the atoms in the alloy, since larger atoms exert a compressive force on neighboring atoms, and smaller atoms exert a tensile force on their neighbors, helping the alloy resist deformation. Alloys may exhibit marked differences in behavior even when small amounts of one element occur. For example, impurities in semi-conducting ferromagnetie alloys lead to different properties, as first predicted by White, Hogan, Suhl, Tian Abrie and Nakamura. Some alloys are made by melting and mixing two or more metals. Brass is an alloy made from copper and zinc. Bronze, used for bearings, statues, ornaments and church bells, is an alloy of copper and tin. Unlike pure metals, most alloys do not have a single melting point. Instead, they have a melting range in which the material is a mixture of solid and liquid phases. The temperature at which melting begins is called :the solidus and the temperature when melting is complete is called the liquidus. However, for most alloys there is a particular proportion of constituents (in rare cases two) which has a single melting point. This is called the alloys eutectic mixture, as shown in Fig. 1-4.
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