Hiroyuki Amma

Title: Hiroyuki Amma: Innovator in Metallic Powder Molding

Introduction

Hiroyuki Amma is a notable inventor based in Yokohama, Japan. He has made significant contributions to the field of metallic powder molding, holding three patents that showcase his innovative approaches to material production. His work focuses on enhancing the mechanical properties of machine parts through advanced sintering techniques.

Latest Patents

Hiroyuki Amma's latest patents include a process for producing a metallic powder-molded body, a re-compacted body of the molded body, and a sintered body produced from the re-compacted body. The process involves several steps, including a preliminary molding step where a metallic powder mixture is compacted into a preform. This preform is then provisionally sintered to form a metallic powder-molded body, which retains graphite along the grain boundaries of the metal powder. The subsequent re-compaction and re-sintering steps lead to a sintered body that exhibits excellent deformability and high mechanical properties, making it suitable for machine parts.

Career Highlights

Throughout his career, Hiroyuki Amma has worked with prominent companies such as Unisia Jecs Corporation and Kawasaki Steel Corporation. His experience in these organizations has allowed him to refine his expertise in metallic powder molding and contribute to advancements in the field.

Collaborations

Hiroyuki has collaborated with notable colleagues, including Takashi Yoshimura and Masashi Fujinaga. Their combined efforts have furthered the development of innovative processes and materials in the industry.

Conclusion

Hiroyuki Amma's contributions to metallic powder molding demonstrate his commitment to innovation and excellence in engineering. His patents reflect a deep understanding of material science and a dedication to improving the mechanical properties of machine parts.