Tool material 工具材料

发布日期:[09-10-22 20:55:19] 浏览人次:[]

The specific material selected for a particular tool is normally determined by the mechanical properties necessary for proper operation of the tool. These materials should be selected after a careful study and evaluation of the function and requirement of the proposed tool.

为某一工具选择特有的材料,通常由该工具在正确的操作下所需的机械性质决定。应该对所需工具的功能和要求做仔细的研究和分析后才确定选择的材料。

The principle materials used for tools can be divided into three major categories: ferrous material, nonferrous material, and nonmetallic material. Ferrous tool materials have iron as a base metal and include tool steel, alloy steel, carbon steel, and cast iron. Nonferrous materials have a base metal other than iron and include aluminum, magnesium, zinc, lead, bismuth, copper, and a variety of alloys. Nonmetallic materials are those materials such as woods, plastics, rubbers, epoxy resins, ceramics and diamonds that do not have a metallic base. To properly select a tool material, there are several physical and mechanical properties you should understand to determine how the material you select will affect the function and operation of the tool.

用来做工具的主要材料可以被分为三大类:黑色金属材料,有色金属材料,非金属材料。黑色工具材料以铁为基材,包括工具钢,合金钢,碳钢,铸铁。有色金属材料以不是铁的金属为基材,包括铝,镁,锌,铅,铋,铜和很多合金。非金属材料是指如木头,塑料,橡胶,环氧树脂,陶瓷及金刚石等那些不含有金属基材的材料。要正确的选择工具材料,应当掌握材料的一些物理性质和力学性质,以便确定选择的材料将如何影响工具的功能和操作。

Physical and mechanical properties are those characteristics of a material which controls how the material will react under certain conditions. Physical properties are those properties which are natural in the material and cannot be permanently altered without changing the material itself. These properties include: weight, color, thermal and electrical conductivity, rate of thermal expansion, and melting point. The mechanical properties of a material are those properties which can be permanently altered by thermal or mechanical treatment. These properties include: strength, hardness, wear resistance, toughness, brittleness, plasticity, ductility, malleability, and modulus of elasticity.

物理性质和力学性质只指控制材料在某些情况下如何反应的特性。物理性质是指材料固有的,除非改变材料本身否则不能被永久改变的性质,这些性质包括:重量,颜色,导热性,导电性,热膨胀率及熔点等。力学性质是指那些通过热处理或机械处理看可以被永久改变的性质,这些性质包括:强度,硬度,耐磨性,韧性,脆性,塑性,延展性,可锻性,弹性模量等。

Form a use standpoint, tool steels are utilized in working and shaping basic material such as metals, plastics, and wood into desired forms. Form a composition standpoint, tool steel is carbon alloy steels which are capable of being hardened and tempered. Some desirable properties of tool steel are high wear resistance and hardness, good heat resistance, and sufficient strength to work the materials. In some case, dim

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本文关键字:Tool material  工具材料
本文所属专题:英文文献翻译 
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