Development of a New Flux for Aluminium Gas Welding
A new flux based on NaCl-CaCl2-CaF2-Na3AlF6 was developed for the gaswelding of aluminium and its alloys.The flux was generated by the application of the Hadamardmultivariate chemical composition model.The model uses a 8 x 8 matrix and a full factorialanalysis to generate several compositions within given ranges of the constituent flux elements.Mechanical and field tests were carried out on weldments made with the flux.The tensile strength,Izod impact strength and hardness of the all-weld metal were 310MPa,5.35J and 100BHN.Theweld deposition efficiency was 90.3％.The new flux and two popular commercial fluxes were givento five expert aluminium welders to use for three months,and were requested to rate theperformances.The results showed that there was an agreement between the responses of thewelders that the new flux performed better than the commercial versions available in Nigeria.
Flux compositions weld microstructure Hadamard multivariate experimental design Mechanical properties Weld deposition efficiency
J.I.Achebo A.O.A.Ibhadode
Department of Production Engineering,University of Benin,Nigeria
国际会议
成都
英文
2008-08-04（万方平台首次上网日期，不代表论文的发表时间）