Andreas Hjaertqvist

Title: Innovations of Andreas Hjaertqvist

Introduction

Andreas Hjaertqvist is a notable inventor based in Karlstad, Sweden. He has made significant contributions to the field of engineering, particularly in the manufacturing of steel Yankee cylinders. With a total of two patents to his name, Hjaertqvist's work showcases his expertise and innovative spirit.

Latest Patents

Hjaertqvist's latest patents include a method of making a steel Yankee cylinder and a design for a steel-made Yankee cylinder. The method patent describes a process that involves welding a cylindrical shell to two end walls, ensuring that the welding operation is performed exclusively from the outside. This technique utilizes a backing material on the inside of the cylinder, resulting in a single weld bead that completely fuses the opposing surfaces. The design patent outlines a steel-made Yankee cylinder featuring a cylindrical shell with two axial ends, connected by circumferential weld beads. The cylindrical shell is designed with inner circumferential grooves, where the wall thickness is either constant or decreasing, and the depth of the grooves increases axially.

Career Highlights

Hjaertqvist is associated with Valmet Aktiebolag, a company known for its advanced technology in the manufacturing sector. His work at Valmet has allowed him to apply his innovative ideas in practical applications, contributing to the company's reputation for quality and efficiency.

Collaborations

Some of Hjaertqvist's coworkers include Magnus Hoegman and Stefan Moden. Their collaboration has likely fostered an environment of creativity and innovation, leading to advancements in their respective fields.

Conclusion

Andreas Hjaertqvist's contributions to the engineering field, particularly through his patents on steel Yankee cylinders, highlight his innovative approach and dedication to improving manufacturing processes. His work continues to influence the industry and showcases the importance of innovation in engineering.