CASE STUDY: HEAVY METAL CASTING
TESTING OF WALL THICKNESSES OF AN EXHAUST MANIFOLD.
The exhaust manifold is one of the most heavily loaded components of an engine. For this reason, the actual and desired condition of the wall thickness should be compared. Only with a sufficient wall thickness can the manifold withstand the shock-like inflow of exhaust gases and the resulting pressure front, as well as the many heating and cooling cycles in the long term.
The notch effect of blowholes can cause a crack in the manifold. Partial breakthroughs can also occur if the wall thickness is too small. This leads to a change in the pressure conditions in the manifold, which reduces engine performance and, at the same time, increases fuel consumption. In addition, there is a high noise level from the direction of the engine and a clearly perceptible exhaust smell in the interior.