Bolted Assemblies Under Pressure: Harmonizing Torque Calculations for Sealing Integrity Integration internship

Abstract

This study focuses on optimizing bolt tightening procedures for gasketed flange assemblies to improve sealing reliability while reducing the complexity and duration of the assembly process. Two torque calculation approaches, the conventional Taylor Forge method and an alternative method, were evaluated to determine the tightening torque required to achieve leak- tight conditions. The comparison showed that the alternative method yields more consistent and realistic results, particularly when applying a friction coefficient of 0.12, as recommended by gasket manufacturers. An alternative tightening strategy, known as the quadrant method, was also implemented and assessed on a test bench. This procedure eliminates the need for bolt numbering and requires fewer tightening passes, making it especially well-suited for large-diameter flanges. Experi- mental validation demonstrated that this method provides sealing performance equivalent to or better than the conventional method, while significantly reducing assembly time. The find- ings support the adoption of improved torque calculation techniques and simplified tightening sequences to enhance both the efficiency and reliability of industrial flange connections.