Hard weld overlay

WEARTECH is a European manufacturer of wear plates for all industries such as:

Production of steel
Mining
Handling of bulk materials
Production of cement and concrete
Production of glass
Coal mining and processing
Power plants and others

The relatively high cost of hard weld overlay products is due to unique, often outstanding characteristics for abrasion, and on top of that resistance to critically high shock loads. The wear resistance of the weld overlay is the property of the material to resist real wear, which is the result of the combined effect of several types of wear, as a rule, abrasive and impact, and almost always one of them prevails.

Based on many years of experience, WEARTECH experts select the composition of the hard welded layer depending on the dominant type of wear.

CrC – erosion, abrasion, deformation
B – durability, wear resistance
Nb – high velocity of fine particles
Mo, V – critical temperatures

The main thing to consider when choosing a hard weld overlay is the percentage of carbides in the deposited layer, while hardness is less important.

That is the way a hard weld overlay looks (photo of carbide-saturated structures, photo of composite weld overlay plate)

The result of metallographic analysis of composite weld overlay plates

Metallographic analysis with an assessment of the microstructure of the deposited layer of 4 different samples featuring different contents of chromium and carbon. Thus, with a chromium content of more than 30% and carbon of more than 4%, the weld overlay has the best performance characteristics when exposed to abrasive particles on the material.