Company Filing History:
1 out of 385 
1 out of 3 Years Active: 2025
Title: Weisi Cai: Innovator in Shape Memory Alloys and 4D Printing
Introduction
Weisi Cai is a prominent inventor based in Guangdong, China. He has made significant contributions to the field of shape memory alloys and additive manufacturing. His innovative work focuses on developing advanced materials and techniques that enhance the capabilities of 4D printing.
Latest Patents
Weisi Cai holds a patent for a NiTiHf high temperature shape memory alloy with a two-way shape memory effect, along with a 4D printing method and its applications. This invention is situated within the technical field of shape memory alloys and additive manufacturing. The patent discloses a method that includes alloy powder processing, model building, substrate preheating, and 4D printing forming. The design concept emphasizes reducing thermal gradients and promoting environmentally friendly clean production. The method employs substrate preheating combined with low laser power and low scanning speed laser powder bed fusion technology, or low preheating temperature electron beam powder bed fusion technology. This approach improves the formed alloy's lattice compatibility with the NiTi substrate, thereby reducing residual stress, preventing cracks, and achieving a density of ≥99%. The resulting material exhibits a high phase transformation temperature, excellent tensile mechanical properties, and a two-way shape memory effect.
Career Highlights
Throughout his career, Weisi Cai has worked with notable institutions, including the South China University of Technology and Guangdong Huayi Plumbing Fittings Industry Co., Ltd. His experience in these organizations has allowed him to further his research and development in innovative materials and manufacturing techniques.
Collaborations
Weisi Cai has collaborated with esteemed colleagues such as Chao Yang and Hongwei Ma. Their joint efforts have contributed to advancements in the field of shape memory alloys and additive manufacturing.
Conclusion
Weisi Cai's contributions to the field of shape memory alloys and 4D printing demonstrate his commitment to innovation and excellence. His patented technologies are paving the way for future advancements in material science and manufacturing processes.