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摘要90年代发展起来的搅拌摩擦焊技术,是自发明到工业应用时间跨度最短和发展最快的一项新型固相连接新技术，被公认为是最有前途和最适合航空材料及结构件制造的方法之一。搅拌摩擦焊缝组织均匀、接头力学性能优良，且生产过程中安全、无飞溅、无烟尘烟气、无辐射，污染小、成本低等技术优势，因而在诸多工业领域得到广泛应用，给传统的制造工艺带来了革命性的改良。搅拌摩擦焊技术是一种用于低熔点铝合金材料的固态连接方法，这项技术可以用来给熔焊不易的材料进行焊接。50742
通过一段时间的学习研究，了解到搅拌摩擦焊机的工作原理、技术优势、研究现状、工业应用和发展前景等相关信息。并且科学的提出两种可行方案，从总体设计的两种方案比较研究，发现由数控铣床的改造来得到的搅拌摩擦焊机更加简便，可靠性高，便于进行数控操作，具有更高的使用价值。
本文设计出的搅拌摩擦焊，总功率约11KW，适合于普通厚度的铝及其合金的工艺试验试件的焊接，搅拌摩擦头转速3000r/min,最大加工焊缝厚度20mm。文中介绍了搅拌摩擦焊接技术的基本原理和特点，概要的介绍了摩擦搅拌焊的技术优势、研究现状、工业应用和发展前景。针对工艺试验试件的摩擦搅拌焊机，主要设计、计算和校核了设备各主要部分，均能够满足焊机的要求。该设备结构紧凑，简单，操作方便，与市场价格相比成本较低。
毕业论文关键词：搅拌摩擦焊；固相焊接；铝合金焊接；应用前景；焊机机构设计
Abstract
The Friction Stir Welding technology developed in the 1990s，since the invention of industrial applications，it is a new type of solid-phase connection technology,which is the time span of the shortest and fastest-growing.It is recognized one of the most promising and most suitable for the manufacture of aviation materials and structure,because of Friction Stir Weld is homogeneous,connector excellent mechanical properties,the safety of the production process,no spatter,no dust flue gas,no radiation,little pollution,Low cost and technical advantages,therefore been widely used in many industrial areas.To the traditional manufacturing process has brought a revolutionary transformation with the Friction Stir Welding technology awareness raising.Friction stir welding technology is a low-melting alloy materials for solid connection method.This technology can be used to weld welding difficult material.
After a period of study, understand the friction stir welding machine working principle, technical advantage and industrial application and research status, development prospects and related information. And science put forward two kinds of feasible solution, from the overall design scheme of two kinds of comparative study, found that the transformation of CNC milling machine for friction stir welding is more convenient, high reliability, easy for CNC operation, has higher use value.
This design out of the Friction Stir Welding，total power about 11KW， thick suitable for the general process of aluminum and its alloys welding test piece Friction Stir head speed 3000r/min，max thickness 20mm weld，this paper introduces the basic Friction Stir Welding technology principles and characteristics，Summary description of the technical advantages of friction stir welding，research，industrial applications and development prospects，technology test specimen for Friction Stir Welding，main design，calculation and check of the equipment of the main parts，Are able to meet the requirements of the welder.The device is compact，simple，easy to operate，lower cost compared with market prices。
Keywords:Friction Stir Weld,Solid-phase welding,Aluminum Welding,Application prospects,Welder structural design
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