Q: Why are there so many cracks?

A. Due to the cooling rates of dissimilar metals, Our Wearguard 700 is manufactured using a welded process. This process results in high temperatures. During the cooling process, the plate goes through a stress relieving process. This is a natural process and does not effect the performance of the plate. The stress relief cracks should be between 3/4" - 2" apart. There are typically two methods used in situations when the hardfacing side is required to be on the outside of a tight radius resulting in cracks wider than desired. the cracks can be touched up using an appropriate hardfacing wire, or an abrasive resistant epoxy compound can be used to fill the cracks.

 

Q: What is the best method of attachment?

A. WearGuard 700 is usually attached by countersunk bolts, weld studs, perimeter welding, or plug welding. Some methods are better suited than others depending on the specific application. For more detail on each method see the installation section.

 

Q: Are there special welding procedures for WearGuard 700?

A. In most cases WearGuard 700 can be welded following the standard procedures for the base material. Welds to the hardfacing will not be of sound quality and cannot be relied upon. If attachments are needed on the hardfaced side of the plate, a slot should be cut completely through the plate to let the weldment protrude through the base material. At this point welding can be done on the base material side of the plate. At no time should the weld puddle come in contact with the hardfacing, the resulting weld will most likely fail.

 

Q: Can CCO Plate be drilled or machined?

A. No. Wearguard 700 cannot be machined or drilled. It can however be ground. Mild steel inserts are used to create countersunk or counter bored holes. Wearguard 700 can be cut using plasma, water jet, EDM, or air-arc gouging.