Pullman Company

Mukesh M Solanki

Christopher B Harley

Carl Coslow

John Handzel

A composite article and process forming a soft metallic layer, underneath a hardface coating, on a metallic substrate, using cloth-like flexible preforms. The softer layer formed underneath the hardfacing should be one having a hardness below 35 HRC, preferably 30 HRC, and should not experience any significant physical changes, e.g., increase in hardness, upon heat treatment.

Hardfaced article and process to prevent crack propagation in hardfaced

There is provided an improved coated composite article and an improved process for making the article. A cloth-like flexible preform is brazed to a metallic substrate to make the article. The article is then subjected to a uniform high pressure and temperature for sufficient time to remove porosity in the coating. The result is a fully dense coating, which is metallurgically bonded to the substrate without any porosity, which has improved physical properties, and which is capable of being polished to a surface finish of at least 4 RMS.

Hardfaced article and process to provide porosity free hardfaced coating

The wear resistance of hardface coatings formed on a metal substrate using cloth-like flexible preforms, by substituting two or more thinner preforms for the single layer preform heretofore employed.

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New Albany, IN, United States of America

Mukesh M Solanki