The Design of a Magnetic Component for Induction Brazing

aut.embargoNoen_NZ
aut.filerelease.date2021-06-28
aut.thirdpc.containsNoen_NZ
dc.contributor.advisorBaguley, Craig
dc.contributor.authorPearce, Benjamin
dc.date.accessioned2019-06-27T22:54:54Z
dc.date.available2019-06-27T22:54:54Z
dc.date.copyright2019
dc.date.issued2019
dc.date.updated2019-06-27T07:50:35Z
dc.description.abstractWithin the mining industry, jaws are used for drilling in large quantities. Slots are milled in each jaw, into which tungsten-carbide teeth are fitted and brazed. The current brazing process requires heating the whole jaw in a furnace for 4 hours, an inefficient and time consuming process. Induction brazing offers a much faster, cheaper alternative that reduces electricity consumption. Through the development of a concentrated induction coil, consistent uniform brazing can be achieved. For brazing at high production rates a furnace- based technique has disadvantages. These include inconsistency in outcomes, low efficiency and high electricity demand. Induction brazing offers improvements in these respects, particularly if magnetic fields can be focused to give selective heating. However, difficulties may be experienced when brazing metals of dissimilar size and magnetic properties, as magnetic field penetration may be insufficient to give rapid heating of the brazing filler metal. This research proposes a coil design that guides the magnetic field to give penetration at desired locations, despite the presence of materials that could otherwise act as a magnetic shield. Magnetic modelling using the finite element method is presented, considering variations in magnetic diffusivity and skin depth in the approach to Curie temperatures. Comparison to a coil without magnetic field guidance indicates the proposed coil achieves superior performance. This study will add to the scientific knowledge in the field of induction heating, specifically in the area of ensuring that a magnetic field penetrates to a brazing region surrounded on all sides by conductive materials with differing properties.en_NZ
dc.identifier.urihttps://hdl.handle.net/10292/12598
dc.language.isoenen_NZ
dc.publisherAuckland University of Technology
dc.rights.accessrightsOpenAccess
dc.subjectInduction Brazingen_NZ
dc.subjectBrazingen_NZ
dc.subjectInduction Heatingen_NZ
dc.subjectMagnetic Componenten_NZ
dc.subjectMagnetic Field Concentrationen_NZ
dc.titleThe Design of a Magnetic Component for Induction Brazingen_NZ
dc.typeThesisen_NZ
thesis.degree.grantorAuckland University of Technology
thesis.degree.levelMasters Theses
thesis.degree.nameMaster of Engineeringen_NZ
Files
Original bundle
Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
PearceB.pdf
Size:
3.23 MB
Format:
Adobe Portable Document Format
Description:
Thesis
License bundle
Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
license.txt
Size:
897 B
Format:
Item-specific license agreed upon to submission
Description:
Collections