Engineers from Wall Colmonoy Corp. discussed how the properties of a hard surfacing alloy change when applied by
different methods, in a presentation at the ITSC conference in Japan last May.
Alloy Ni-15Cr-15W-3B-4Si-3.5Fe-0.6C is a hard surfacing alloy designed to extend the life of OEM parts that are subjected to various wear mechanisms in service. The alloy can also be used to repair/rebuild worn parts subject to the same wear mechanisms, and it can significantly extend service life.
This hard-surfacing alloy can be applied by various methods, including thermal spray processes, laser cladding, PTA welding, GTAW, OFW, and GMAW. This study compared the properties of the alloy applied by different methods using various test procedures, and also included the cost/benefit ratio of each.
Test procedures included abrasion testing by ASTM G-65; erosion testing by ASTM G-76; Vickers hardness by ASTM E-92; and Rockwell hardness by ASTM E18. In addition, metallographic examples of the test specimens were prepared.
Title: Properties of Hard Surfacing Alloy Ni-15Cr-15W-3B-4Si-3.5Fe-0.6C
Authors: Michael Weinstein, Lawrence Johnson, Wall Colmonoy Corporation, Los Lunas, New Mexico; Lydia Lee, Wall Colmonoy Corporation, Madison Heights, Michigan.
https://asm.confex.com/asm/itsc19
