Heat Check

HEAT CHECKĀ H007

A cracking of the seal face caused by the differential expansion rate between the heavier base material and the thin hard coating. The cracks act as knife blades that will shave the carbon face in a short period of time

Most hard face coatings have an expansion rate about one third that of the base stainless steel material.

With the appearance of silicon and tungsten carbide solid face materials, the need for hard facing has just about disappeared

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  • On February 15, 2018