National Oilwell Varco, L.p.

Raju Pillai

Jiinjen Albert Sue

Parul Walia Dhall

Unnikrishnan Vasudevan

A hardfacing composition composed of an Fe&#x2014;Cr alloy. The alloy is comprised of 80 wt % iron, about 2 wt % to about 20 wt % Cr, less than 1 wt % Si and less than 1 wt % C. The alloy's microstructure is at least 80 vol % martensite; and less than 20 vol % austenite.

Laser cladding Fe&#x2014;Cr alloy on downhole tools

A method of laser hardening comprises irradiating a surface of a component with a laser beam to form a first band of irradiated material, irradiating the surface of the component with the laser beam to form a second band of irradiated material that overlaps the first band of irradiated material, where the first band and the second band have a pitch to width ratio of between about 0.5 and about 0.78.

Growing community of inventors

Pasadena, TX, United States of America

Raju Pillai