Projeto de uma máquina de solda ponto por fricção e mistura mecânica (FSSW)

Abstract

In 1991, The Welding Institute (UK) introduced the world to a new welding technology called Friction Stir Welding (FSW). This technology has opened new doors in the field of welding and, in 2003, Mazda's patented Friction Stir Spot Welding (FSSW), which is a variable of FSW. These processes allow to realize the union of materials in the solid state, ie, without involving melting. Another major attraction is the ease of welding of light alloys such as aluminum and copper, for example, unlike conventional processes. The welding is done through heat and mechanical mixing between the plates being joined, and is made possible by the plasticity of the material at temperatures below the melting. This work aims to design and manufacture a machine capable of performing welding FSSW, offering control over its variables. A literature review of FSW and FSSW was the theoretical source that the input parameters for design of the machine. Subsequently the design stage, in which several ideas were analyzed to arrive at a solution that proves more suitable to the desired goals. After conception, broke for the design of all structural elements of the machine and specifications of all components. The end result of this work is the complete design of a spot welding machine by friction, in the form of memorials calculation and descriptive drawings for manufacturing and most of the components already purchased and manufactured. Until the delivery of this work was lacking a few components and details to complete the machine. Among the findings is the complexity that it has when sizing equipment with little information and one of the goals is an easy and inexpensive project.

Mechanical Engineering

Welding

Friction welding