Eiichi Tamura

Title: The Innovations of Eiichi Tamura

Introduction

Eiichi Tamura is a notable inventor based in Kobe, Japan. He has made significant contributions to the field of materials engineering, particularly in the development of seamless steel pipes. With a total of 5 patents to his name, Tamura's work has had a lasting impact on the industry.

Latest Patents

One of his latest patents is for a seamless steel pipe designed for hollow springs. This innovative pipe includes specific chemical compositions, such as C: 0.2 to 0.7 mass %, Si: 0.5 to 3 mass %, Mn: 0.1 to 2 mass %, Cr: 3 mass % or less, Al: 0.1 mass % or less, P: 0.02 mass % or less, S: 0.02 mass % or less, and N: 0.02 mass % or less. The patent specifies that the residual austenite content in the inner surface layer part of the steel pipe is 5 vol. % or less, and the average grain size of a ferrite-pearlite structure in this layer is 18 µm or less. Additionally, the number density of a carbide with a circle equivalent diameter of 500 nm or more in the inner surface layer is limited to 1.8×10 particles/µm or less. Another significant patent is for a hollow seamless pipe for high-strength springs, which features a steel material with carefully adjusted chemical compositions. This patent outlines that the depth of the whole decarburized layer in the inner surface layer is 100 µm or less, and the depth and width of any flaws present are also specified.

Career Highlights

Throughout his career, Eiichi Tamura has worked with prominent companies such as Kobe Steel, Ltd. and Shinko Metal Products Co., Ltd. His experience in these organizations has allowed him to refine his expertise in materials science and engineering.

Collaborations

Tamura has collaborated with notable coworkers, including Fumihiro Koshigoe and Toshiki Ueda. These partnerships have contributed to the advancement of his innovative projects and patents.

Conclusion

Eiichi Tamura's contributions to the field of materials engineering, particularly through his patents on seamless steel pipes, showcase his innovative spirit and dedication to advancing