研究目的
Investigating the effects of scanning speed and scanning pitch on temperature distribution and changes during the selective laser melting process with Al6063 metal powder.
研究成果
The simulation demonstrates that scanning speed and pitch significantly affect the temperature distribution during selective laser melting. Higher scanning speeds and larger pitches result in lower temperatures due to reduced energy absorption and increased heat diffusion. The findings provide insights into optimizing process parameters for better quality in additive manufacturing.
研究不足
The study focuses on numerical simulation and does not include experimental validation. The effects of other process parameters and material properties variations are not considered.
1：Experimental Design and Method Selection:
The study uses ABAQUS for finite element simulation to model the three-dimensional transient temperature field during selective laser melting. A Gaussian moving heat source is applied to simulate the laser melting process.
2：Sample Selection and Data Sources:
The model consists of a lower part made of 45 steel and an upper layer of Al6063 powder. The dimensions and material properties are specified based on literature and experimental data.
3：List of Experimental Equipment and Materials:
ABAQUS software is used for simulation. The materials involved are Al6063 metal powder and 45 steel substrate.
4：Experimental Procedures and Operational Workflow:
The simulation involves setting up the model, applying the heat source, and analyzing the temperature distribution under varying scanning speeds and pitches.
5：Data Analysis Methods:
The temperature distribution and changes are analyzed to understand the effects of scanning speed and pitch on the melting process.
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