Hiromi Hieno

Title: Hiromi Hieno: Innovator in Chrome Plating Technology

Introduction

Hiromi Hieno is a prominent inventor based in Gamagori, Japan. She has made significant contributions to the field of chrome plating technology. Her innovative approach has led to the development of a unique method that enhances the properties of chrome plated parts.

Latest Patents

Hiromi Hieno holds a patent for "Chrome plated parts and chrome plating method." This invention utilizes a chrome plating bath containing organic sulfonic acid. The plating process involves the application of a pulse current, which results in the formation of a crack-free lower chrome layer on a steel substrate. This lower chrome layer exhibits a compressive residual stress of 100 MPa or more and a crystal grain size ranging from 9 nm to less than 16 nm. Following this, a direct current is applied to create a cracked upper chrome layer on the lower layer. This innovative structure provides the chrome plated part with enhanced heat resistance, corrosion resistance, wear resistance, and excellent sliding properties.

Career Highlights

Hiromi Hieno is associated with Hitachi, Ltd., where she continues to push the boundaries of innovation in her field. Her work has garnered attention for its practical applications and effectiveness in improving the durability and performance of chrome plated components.

Collaborations

Hiromi has collaborated with notable colleagues, including Yuichi Kobayashi and Junichi Nagasawa. These partnerships have contributed to the advancement of her research and the successful implementation of her patented technology.

Conclusion

Hiromi Hieno's contributions to chrome plating technology exemplify her innovative spirit and dedication to enhancing industrial processes. Her patent reflects a significant advancement in the field, showcasing her expertise and commitment to excellence.