Rapid casting technology based on selective laser sintering

Selective laser sintering (SLS), as a kind of additive manufacturing technology, which uses beam to scan and heat powder material layer by form parts (models), is widely used in the field casting, mainly for preparing casting coated sand cores, investment patterns, etc. The SLS technique facilitates rapid shortens production periods eliminating mold preparation. In this study, we reached conclusions basic principles characteristics methods, focused on research status, key technology development trend fields forming sand-casting molds patterns.