广东工业大学 模具专业英语2课件09E2-1

要求： 1.专业名词及术语
2. 翻译课文
Welding
专业名词及术语:
• • • • • •
welding 焊接 pressurewelding 压力焊 spotwelding 点焊 buttwelding 对头（缝）焊 fusionwelding 熔焊 flux-shielded arc welding 溶剂保护电弧焊
铆钉，铆接 硬钎焊，铜焊 氧化 焊接，助熔剂 挤压
氧（乙）炔
Welding
专业名词及术语: • torch
• electrode
• filler
• overlap • strike
焊炬 电（焊) 极，焊条 填充剂 搭接，重叠
放电
Welding
Welding
Welding
Welding
Welding
句子分析：
• 3. The ends of metal are heated to a white heat—for iron, the welding temperature should be about 1300C –in a flame. • 用火焰把金属端部加热到白热状态----铁 的焊接温度约为1300度。
Metal Forming Processes in Manufacturing
• Complex geometries, in both massive and sheet forming processes, can be obtained equally well by cold or hot forming. Of course, due to the lower yield strength of the deforming material at elevated temperatures, tool stresses and machine loads are, in a relative sense, lower in hot forming than in cold forming.
译文
• 在体积成形和板料成形工艺中，用热加 工和冷加工都可获得形状复杂的零件。 当然，由于变形材料在高温下屈服强度 较低，在热成形时模具压力和设备的吨 位要比冷成形时小些。
Guangdong University of Technology
1. 2 阅读课文
Lesson13 Welding
Lesson13 Welding
Guangdong University of Technology
1. 1 专业英语阅读材料： Metal Forming Processes in Manufacturing
制造业中的金属成形工艺
Metal Forming Processes in Manufacturing
• Metal forming includes (a) massive forming processes such as forging, extrusion, rolling and drawing and (b) sheet forming processes such as brake forming, deep drawing and stretch forming. Among the group of manufacturing processes discussed earlier, metal forming represents a highly significant group of processes for producing industrial and military components and consumer goods.
• 在这一系列重要的焊接过程中，电弧为 熔化金属供热，而焊剂起保护和清理作 用，经常用于冶金控制中。
英译中
Guangdong University of Technology
Specialized English II
专业英语
廖毅娟
Email: yjliao@
第一讲
• 1. 1 专业英语阅读材料： Metal Forming Processes in Manufacturing • 1. 2 阅读课文—— Welding
译文
• 一般将金属成形按温度分为冷成形（室温）和热成形 （再结晶温度以上）。大多数材料在不同的温度有不 同的特性。通常，在冷成形中材料的屈服应力随应变 的增加而增加，而在热成形中，材料的屈服应力随应 变比（变形率）的增加而增加。但是，在不同温度下 决定金属成形的原理基本是相同的。因此，成型工艺 的分类是以原材料的温度为基础的，而不是根据对这 些工艺的了解和改进而进行的。事实上，模具设计、 设备、自动化、零件的操控及润滑概念不是通过温度 分类来考虑的，而要考虑材料、输入输出时的零件形 状、生产率等因素。
译文
• 金属成形包括体积成形和板料成形。体 积成形有锻造、挤压、轧制和拉拔；板 料成形有压弯、深拉深和张拉成形等。 早期对这类制造工艺Байду номын сангаас讨论认为：金属 成形是用于工业，军事及消费品生产的 重要工艺。
Metal Forming Processes in Manufacturing
• A common way of classifying metal forming processes is to consider cold (room temperature) and hot (above the recrystallization temperature) forming. Most materials behave differently under the different temperature conditions. Usually, the yield stress of metal increases with increasing strain (or deformation) during cold forming and with increasing stain rate (or deformation rate) during hot forming. However, the general principles governing the forming of metals at various temperatures are basically the same; therefore, classification of forming processes based on initial material temperature does not contribute a great deal to the understanding and improvement of theses processes. In fact, tool design, machinery, automation, part handling and lubrication concepts can be best considered by means of a classification based not on temperature but rather on specific input and output geometries and material and production rate conditions.
句子分析：
• 4. Care must be taken to ensure that the surfaces are thoroughly clean first, for dirt will weaken the weld. • 因为杂质将削弱焊接质量，必须注意要 确保金属表面得先清除干净。
Welding
专业名词及术语: • diversity • fastening • shielding • soldering • bismuth • cadmium 不同，多样性 连接件，紧固件 遮护，屏蔽 软钎焊，低温）焊料 铋 镉
Welding
专业名词及术语: • rivet • braze • oxidation • flux • squeeze • oxy-acetylene
句子分析：
5. In this important series of welding processes the electric are supplies the heat for fusion while a flux is responsible for the shielding and cleaning functions and often also for the metallurgical control.
Welding
句子分析：
1. Not only metals can be welded, so can many of the plastics. • 不但金属能焊接，许多塑料也能焊接。 2. One of the most important operations in soldering is that of cleaning the surface to be joined, this may be done by some acid cleaner. • 软钎焊中最重要的操作之一是清除所要焊的金 属表面，这可以通过酸性清洁剂来实现。