Effect of Pre-heating of Powder Bed on Distortion in Parts Produced of 1.2709 Using Selective Laser Melting
Takkinen, Juuso (2024)
2024
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:amk-2024060420512
https://urn.fi/URN:NBN:fi:amk-2024060420512
Tiivistelmä
The subject of this thesis is to study effect of powder bed preheating on distortion in parts built from Maraging steel M300/1.2709.
Selective laser melting is gaining more popularity especially in the field of rapid prototyping and small batch producing of complex metal parts. Although SLM technique has been around since late 1980s it is still new method compared to more traditional production techniques and there are many obstacles to be overcome in production time, cost, and quality. One of the biggest issues in SLM is distortions in produced parts. The amount of distortion is hard to predict without expensive simulation tools and even when such tool is used the final true result can only be seen when actual part is produced, and true distortion measured.
In this study calibration parts designed for measuring the amount of distortion will be produced with different powder bed pre-heating temperatures. Amount of distortion is measured from each produced part and results are compared between each test print conducted with different parameters.
Selective laser melting is gaining more popularity especially in the field of rapid prototyping and small batch producing of complex metal parts. Although SLM technique has been around since late 1980s it is still new method compared to more traditional production techniques and there are many obstacles to be overcome in production time, cost, and quality. One of the biggest issues in SLM is distortions in produced parts. The amount of distortion is hard to predict without expensive simulation tools and even when such tool is used the final true result can only be seen when actual part is produced, and true distortion measured.
In this study calibration parts designed for measuring the amount of distortion will be produced with different powder bed pre-heating temperatures. Amount of distortion is measured from each produced part and results are compared between each test print conducted with different parameters.