Abstract:
Fusion welding and diffusion welding are two of the type of material joining
methods by welding. In this study two type of materials were used which
are low carbon steel and grey cast iron. Holding time, temperature and
pressure are the parameters that include in the diffusion welding and these
variables will be analysed by this project. This project is focusing on the
effect of temperature on tensile strength in diffusion welding of marine
grade grey cast iron with low carbon steel. The materials were identified
and diffusion welding technical data and dimension of the specimens were
studied before proceed with the joining process. Equipment and the
welding method were also fabricated and developed. The joining process
was carried out using three different temperatures 1000, 900 and 800
Celsius using 12.5 MPa bonding pressure and conducted under
atmospheric condition. The joining using different temperatures were
successful but the tensile test could not be carry out since the joining was
broken during the process of machining. From the machining data, the best
results that gained was at 900 degree Celsius because it may reflect back
to the theory of diffusion that stated 80% of the melting point of the
materials. Therefore, in the future study there are few improvements have
to be considered in order to improve the results.
