铝合金的搅拌摩擦焊DOC

毕业设计说明书题目：铝合金的搅拌摩擦焊

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摘要

铝及铝合金是工业中应用最广泛的一类有色金属结构材料，铝合金具有良好的耐蚀性、较高的比强度和导热性以及在低温下能保持良好力学性能等特点，在航空航天、汽车、电工、化工、交通运输、国防等工业部门被广泛地应用。随着近年来科学技术以及工业经济的飞速发展，对铝合金焊接结构件的需求日益增多，使铝合金的焊接性研究也随之深入。铝合金的广泛应用促进了铝合金焊接技术的发展，同时焊接技术的发展又拓展了铝合金的应用领域，因此铝合金的焊接技术正成为研究的热点之一。

英国焊接研究所(The Welding Institute)发明的搅拌摩擦焊为轻金属材料的连接提供了新的方法和途径。自从搅拌摩擦焊摩擦焊发明以来搅拌摩擦焊技术得到广泛的关注和深入的研究。特别是针对铝合金材料，世界范围的研究机构学校以及大公司都对此进行了深入细致的研究和工程应用开发并且在诸多工业制领域得到了成功应用。

本文详细介绍了搅拌摩擦焊原理特点并且针对铝合金的搅拌摩擦焊特点性能以及工业应用作了详细的阐述同时对搅拌摩擦焊在中国市场的发展和应用作了简略介绍和预测。

关键词：铝及铝合金搅拌摩擦焊焊接方法焊接特点

Abstract

Aluminum and aluminum alloy is a kind of nonferrous metal structure material widely used in industry, aluminum alloy has high corrosion resistance, good strength and thermal conductivity as well as in the low temperature can keep good mechanical properties and other characteristics, in the aerospace, automotive, electrical, chemical, transportation, national defense and other industrial sectors are widely used. In recent years with the rapid development of science and technology and industrial economy, structure of the growing demand for aluminum alloy welding, so the aluminum alloy welding research also further. Aluminum alloy is widely used to promote the development of welding technology of aluminum alloy, the welding technology development and expanding the application field of aluminum alloy, so the aluminum alloy welding technology is becoming one of the hot research topics.

British Welding Research Institute (The Welding Institute) the invention of the friction stir welding for light metal materials is connected and provided a new approach to. Since the invention of the friction stir welding friction welding, friction stir widely attention and deeply research get welding technology. Especially for aluminum alloy material, worldwide research schools and large companies have conducted in-depth study and engineering application and has been successfully applied in many industrial fields.

This paper introduces the principle and the characteristics of friction welding and stirring in aluminum alloy friction stir welding properties and industrial applications are described in detail the development and application of friction stir welding in the Chinese market are briefly introduced and predicted. Keywords: Aluminium and aluminium alloy Friction stir welding Welding process Welding characteristics

目录

摘要 (1)

英文摘要 (2)

第一章铝的特点 (4)

1.铝的焊接特点 (4)

2.铝及铝合金的焊接方法 (5)

第二章搅拌摩擦焊接 (7)

1.搅拌摩擦焊接原理 (8)

2.搅拌摩擦焊接方法 (8)

3.搅拌头与搅拌摩擦焊设备 (9)

4.搅拌摩擦焊特点 (11)

第三章铝合金的搅拌摩擦焊 (14)

1.铝合金的搅拌摩擦焊接工艺 (14)

2.铝合金常用焊接规范 (19)

3.铝合金搅拌摩擦焊接接头性能 (20)

4.搅拌摩擦焊缺陷及预防方法 (22)

第四章搅拌摩擦焊的应用及前景 (25)

1.铝合金搅拌摩擦焊的应用现状 (25)

2.铝合金搅拌摩擦焊的发展趋势 (27)

第五章总结 (28)

参考文献 (29)