Andrew D Howells

Title: Andrew D Howells: Innovator in Aluminum Alloy Technology

Introduction

Andrew D Howells is a notable inventor based in Kingston, CA, with a focus on aluminum alloy technologies. He holds a total of 6 patents, showcasing his contributions to the field of materials science, particularly in the development of aluminum alloys for heat exchangers.

Latest Patents

One of his latest patents is for an aluminum alloy designed specifically for heat exchanger fins. This innovative aluminum alloy fin stock material comprises about 0.9-1.2 wt. % Si, 0.3-0.5 wt. % Fe, 0.20-0.40 wt. % Cu, 1.0-1.5 wt. % Mn, 0-0.1% Mg, and 0.0-3.0% Zn, with the remainder being aluminum and impurities at ≤0.15 wt. %. The production process involves direct chill casting an ingot, followed by hot rolling, cold rolling to an intermediate thickness, inter-annealing at temperatures between 200 and 400° C., and further cold rolling to achieve a cold work percentage of 20 to 40%. This aluminum alloy fin stock material is designed to possess an improved combination of pre- and/or post-brazes strength, conductivity, sag resistance, and corrosion potential, making it particularly useful for the fabrication of heat exchanger fins.

Another significant patent by Howells is related to an aluminum alloy product intended for use as finstock material within brazed heat exchangers. This invention emphasizes high strength and conductivity after brazing, further enhancing the performance of heat exchangers.

Career Highlights

Throughout his career, Andrew D Howells has worked with prominent companies such as Novelis, Inc. and Denso Corporation. His experience in these organizations has contributed to his expertise in aluminum alloy technologies and their applications in various industries.

Collaborations

Andrew has collaborated with notable professionals in his field, including Pierre Henri Marois and Kevin Michael Gatenby. These collaborations have likely enriched his work and led to advancements in aluminum alloy innovations.

Conclusion

Andrew D Howells is a distinguished inventor whose work in aluminum alloy technology has made significant contributions to the field. His innovative patents and career experiences reflect his commitment to advancing materials science, particularly in applications for heat exchangers.