Caterpillar Inc.

Hyung K Yoon

Sang-Ha Leigh

Daniel Patrick Vertenten

Thomas E Clements

David Anthony Cusac

Eric Kelsey

To simulate various rolling and sliding conditions, a wear testing machine can include a load roller arrangement having at least a first load roller, a second load roller, and a third load roller arranged in a triangular layout. A test roller can be disposed between and in simultaneous contact with the first, second, and third load rollers along at least three points of contact. The load rollers and the test roller can be configured to rotate with respect to each other at a same rotational speed or at different rotational speeds. In an embodiment, the wear testing machine can introduce lubricant to the points of contact between the three load rollers and the test roller.

Wear testing machine

A method of forming an oxide layer on a powder metal part includes subjecting the powder metal part to a steam oxidation process. An oxide layer is formed on the powder metal part. The oxide layer has a thickness greater than 7 microns.

Steam oxidation of powder metal parts

A composite powder includes an FeMo based first powder including between about 20% and about 55% by weight Fe and between about 45% and about 80% by weight of Mo. The composite powder also includes an aluminum bronze based second powder blended with the FeMo based first powder.

Growing community of inventors

Peoria, IL, United States of America

Hyung K Yoon