Industrial development of gas induced semi-solid process
(1. Department of Mining and Materials Engineering, Faculty of Engineering, Prince of Songkla University,
Hat Yai, Songkhla, 90112, Thailand;
2. Department of Industrial Engineering, Faculty of Engineering, Rajamangala University of Technology Srivijaya, Songkhla, 90000, Thailand;
3. National Metal and Materials Technology Center, Thailand Science Park, Klong Luang,
Pathumthani 12120, Thailand)
Hat Yai, Songkhla, 90112, Thailand;
2. Department of Industrial Engineering, Faculty of Engineering, Rajamangala University of Technology Srivijaya, Songkhla, 90000, Thailand;
3. National Metal and Materials Technology Center, Thailand Science Park, Klong Luang,
Pathumthani 12120, Thailand)
Abstract: The gas induced semi-solid (GISS) is a rheocasting process that produces semi-solid slurry by applying fine gas bubble injection through a graphite diffuser. The process is developed to be used in the die casting industry. To apply the GISS process with a die casting process, a GISS maker unit is designed and attached to a conventional die casting machine with little modifications. The commercial parts are developed and produced by the GISS die casting process. The GISS die casting shows the feasibility to produce industrial parts with aluminum 7075 and A356 with lower porosity than liquid die casting.
Key words: gas induced semi-solid (GISS); rheocasting; die casting; semi-solid metal; industrial applications