Fred Fietzke

Title: Fred Fietzke: Innovator in Cutting Tool Technology

Introduction

Fred Fietzke is a distinguished inventor based in Dresden, Germany. He holds a remarkable portfolio of 14 patents, showcasing his expertise in the field of cutting tool technology. His innovative contributions have significantly advanced metal machining processes.

Latest Patents

One of Fietzke's latest patents is the PVD Al2O3 coated cutting tool. This invention describes a coated cutting tool designed for metal machining. The coating consists of one or more layers of refractory compounds, including a fine-grained, crystalline γ-phase alumina, Al2O3, with a grain size of less than 0.1 µm. The Al2O3 layer is deposited using a bipolar pulsed DMS technique at substrate temperatures ranging from 450°C to 700°C, with a preference for 550°C to 650°C. The identification of the γ-phase alumina is achieved through X-ray diffraction, revealing reflexes from the (400) and (440) planes at specific angles. The alumina layer is characterized by its smooth surface finish and is virtually free of cracks and halogen impurities.

Another significant patent involves a process and device for coating substrates using bipolar pulsed magnetron sputtering. This technology operates in the frequency range of 10 to 100 kHz and includes at least three magnetron sources. The innovative design allows for effective coating of substrates, enhancing their performance and durability.

Career Highlights

Throughout his career, Fred Fietzke has worked with notable organizations, including the Fraunhofer Society for the Advancement of Applied Research and Sandvik AB. His work in these institutions has contributed to the development of advanced materials and technologies in the cutting tool industry.

Collaborations

Fietzke has collaborated with esteemed colleagues such as Klaus Goedicke and Siegfried Schiller. These partnerships have fostered innovation and the exchange of ideas, further enhancing the impact of his work.

Conclusion

Fred Fietzke's contributions to cutting tool technology through his patents and collaborations have established him as a leading figure in the field. His innovative spirit continues to drive advancements in metal machining processes.