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Erosion during brazing
Brazing is defined as a method of joining two metal components by applying a third brazing alloy, then raising the temperature above the melting point of the brazing alloy but below the melting point of the components. And in this way joining the two components together without melting any part of them. Even so the components are subjected to some erosion caused by the liquid brazing alloy.
Höganäs has developed a unique range of Stainless steel filler metals As the composition of these filler metals are similar to the Stainless steel they are to bond together the diffusion of the melting point depressant elements causes erosion. When very thin plates are to be brazed together this erosion can cause problems.
This investigation aims to determine the rate of erosion on different types of stainless steel. Identify the controlling parameters deciding the rate of erosion and try to control them. Parameters to investigate will be the heating cycle for brazing, the influence of atmosphere and possible smaller alterations of the composition of the brazing alloy.
The experiment will be performed at Höganäs using vacuum furnace and Hydrogen based atmospheres. Primary method of evaluation will be metallography which also can be done in Höganäs.
To be able to perform this the applicant need to have studied materials and metals and know the fundamentals of metallography.
Compensation is paid for work and accommodation can be arranged.
Informationen om uppsatsförslag är hämtad från Nationella Exjobb-poolen.