Mario Luis Macia

Title: The Innovations of Mario Luis Macia

Introduction

Mario Luis Macia is a notable inventor based in Bellaire, TX (US). He has made significant contributions to the field of welding technology, holding a total of 4 patents. His work focuses on developing advanced weld metals that enhance the performance and safety of pipelines.

Latest Patents

One of his latest patents is for high toughness weld metals with superior ductile tearing resistance. This innovation provides weld metals and methods for welding ferritic steels that possess high strength and ductile tearing resistance, making them suitable for use in strain-based pipelines. The weld metal contains retained austenite and features a cellular microstructure with lath martensite in the cell walls and degenerate upper bainite in the cell interiors. The composition includes between 0.02 and 0.12 wt % carbon, between 7.50 and 14.50 wt % nickel, and minimal amounts of manganese, silicon, oxygen, sulfur, and phosphorus, with the balance being essentially iron. Additionally, other elements may be added to enhance the properties of the weld metal. The application of these weld metals utilizes a power source with current waveform control, producing a smooth and controlled welding arc and weld pool in the absence of carbon dioxide or oxygen in the shielding gas.

Another significant patent involves a method to measure tearing resistance. This method includes structures and apparatuses used to measure the tearing resistance of a commercial member, such as a pipeline for carrying hydrocarbons. The approach employs full-scale testing methods to obtain unloading compliance measurements, which are then used to generate a tearing resistance curve that accounts for geometry and data beyond the yield point of the commercial member.

Career Highlights

Mario has worked with prominent companies, including ExxonMobil Upstream Research Company and ExxonMobil Research and Engineering Company. His experience in these organizations has allowed him to refine his expertise in welding technologies and contribute to significant advancements in the field.

Collaborations

Throughout his career, Mario has collaborated with notable colleagues, including Douglas Paul Fairchild and Steven Jeffrey Ford. These partnerships have fostered innovation and the development of cutting-edge technologies in welding.

Conclusion

Mario Luis Macia's contributions to welding technology through his patents and collaborations highlight his role as an influential inventor in the industry. His work continues to impact the safety and efficiency of pipeline systems.