机电工程专业英语（ 第二版） 教学课件 作者 宋瑞苓 主编 机电工程专业英语（ 第二版）（宋瑞苓）08567课件.pptVIP

尚辅网 尚辅网 Chapter OneFundamentals of Mechanical Engineering Lesson 1 Properties of Materials Lesson 2 Classification of Steels Lesson 3 Heat Treatment Lesson 4 Types of Gear Lesson 5 Rolling-Type Match the property with the correct definition by connecting lines Increase in tensile strength Increase in hardness Increase in toughness Alteration of the critical temperature of the steel Increase in wear abrasion Red hardness Corrosion resistance High-strength, low-alloy steels Tempering is to secondary heating of martensite obtained by rapid cooling of austenite. During this process, no change of phase takes place because the temperature is never raised beyond the lower critical temperature (723°C). This process hardens the steel with reduction in strength; also, it dds to the toughness and ductility. List the Gears name Identify the following berings Chapter TwoTechnique of Manufacturing Lesson 1 Mechanism of Chip Formation Lesson 2 Engine Lathe Lesson 3 The Hydraulic System Lesson 4 Electric Discharge Machining Lesson 5 Benefits of A Quality System Translate the machining terms into English. According to the fig2-3, fill the table with proper terms，following by the section number. ? Identify parts of Lathe Translate the following terms into Chinese The following is schemed of center lathe, please label every part of the machine. Test by your selves Place a “T” after sentences that are true and an “F” after sentences that are false After reading the text ,make your deciding and mark “T” after a true statement and a “false” after false one. EDM is the traditional technique for machining. EDM is generally used to remove metals of those machinability are bad from workpiece. In process of EDM, discharge takes place two points between the anodes or between cathodes. The process of EDM takes place with great heat generated. The electrode connected to the negative terminal generally erodes at a faster rate. In process of EDM, there is no relative motion bet