Substituição das etapas de usinagem pela conformação mecânica na fabricação de contatos para soldagem por resistência

• Ano de defesa: 2003
• Autor(a) principal: Gilmar Cordeiro da Silva
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Minas Gerais; UFMG
• Palavras-chave em Português: Engenharia Metalúrgica e de Metais; Engenharia metalúrgica
• Link de acesso: http://hdl.handle.net/1843/BUOS-8DHJHH

Spot welding consists joins two or more metal sheets by the application of pressure and heating. The heating is generated by the metal resistance to the flow of high a electric current through contacts that press the metal sheets. Among the control elements of the process the interchangeable contacts are important. They allow the electric current toflow and cause pressure on the foils. Today these contacts are manufactured by a machining process which involves high material and fabrication costs. The cold metal forming presents economic advantages over the machining process such as: material savings, productivity and lower operating costs. The present case study utilized the numeric modelling by finite elements and experimental methods to analyze thereplacement of the maching process by cold metal forming in the production of interchangeable contacts for spot welding.