Glossary

What are transonic airfoils, and what is the active clearance control? Check out our technical dictionary and find out more about engine technology terms – from active clearance control to velocity triangle.

HAE "Hell" "Hard" anodizing Hard chrome-plating Hardening and tempering Hardfacing Heat exchanger High-pressure compressor High-pressure turbine High-speed milling High-temperature vacuum brazing Hot isostatic pressing (HIP) Hypersonic aircraft

High-temperature vacuum brazing

(at 1000 - 1200°C)
This process serves to produce high-strength and high-temperature resistant brazed joints between identical, similar or dissimilar materials, such as stainless steels, nickel and cobalt alloys. It is applied in cases where other joining methods are unsuitable because of complex component geometries or because they would cause internal stresses or cracking. Brazing alloys used include nickel-base materials with alloying elements or gold. As the brazing temperatures are often just below the melting temperature of the component materials the process requires accurate temperature settings and precise furnace control.