Description

Relative movements occur between the steel housing of a plant component and the refractory lining, particularly during heating and cooling.  The reason is the different warming and cooling times of various layers.  As a result unexpected stress can be created, leading to premature crack formation in the refractory concrete and reducing the service life of the plant.

vhi has developed an anchoring system in the MAS Series to compensate these relative movements.  A plastic part consisting of a ring and a cap has been installed in the system.  The plastic part melts when the furnace is heated for the first time, giving the anchoring system the required mobility.  The cap keeps the system free from refractory concrete which would otherwise block this mobility.
The MAS Series with different threaded pins is suitable for single or multilayer construction.  For multilayer construction the threaded pin is mounted first, which vhi supplies both in a stud welding version and a version for manual welding.  Since no anchors that are spread open are in the way, it is easy to install the block insulation.  The anchor with its mounting system is then screwed onto the stud bolts.

MAS with insulation

MAS without insulation

MAS - Stud welding accessories