The Babcock & Wilcox Company

Other

Mcdermott Technology, Inc.

Dale F LaCount

Kenneth D Seibert

Richard L Holbrook

Thomas L Davis

Steven E LeBeau

Dean L Mayer

Kurt J Kahlow, Deceased

George H Harth, Iii

George B Watson

Douglas K Finnemore

James M Tanzosh

Douglas D Zeigler

Michael N Gold

Steven C Kung

Walter R Mohn

Michael D McAninch

Richard A Gleixner

Henry A Domian

John M Crapuchettes

Chester M Kawashige

Alex S Miller

James Scala

A method for producing chromium carbide coatings on steel provides a steel component having a surface which is carburized to contain at least about 0.40% by weight carbon and is followed by chromizing the surface to form a chromium carbide coating on the surface.

Method for producing chromium carbide coatings

A method for welding horizontal pipe along the inner diameter of the pipe and outer diameter of the pipe to prevent weld root defects on the bottom half of the pipe.

Method of welding 5-G pipe

A cylindrical heat exchanger assembly has a plurality of spaced cylindrical heat exchangers having bulge formed circumferential passageways spiraling along the cylindrical surface of each to form a passageway for heat transfer fluid flow therethrough and for allowing a second fluid to sealably flow in the spaces therebetween to establish heat transfer between the two fluids thereby.

Concentric heat exchanger having hydraulically expanded flow channels

An improved method for the efficient incorporation of a metal such as silver in a superconducting material includes blending the metal with a high temperature superconductor or precursor powder and consolidating the same into pellets. The pellets are charged directly into a heating assembly where it is melted and heated sufficiently to a uniform temperature prior to fiberization. Droplets of the melted blend fall through a collar into a nozzle where they are subjected to a high velocity gas to break the melted material into ligaments which solidify into improved flexible fibers having the metal homogeneously dis

Efficient incorporation of silver to improve superconducting fibers

A method of constructing a nozzle having cooling channels comprises a shell and a liner which are formed into a body of revolution having an axis of revolution. Helical welds are formed to hold the liner and shell to each other with a channel position being defined between each pair of helical welds. Pressurized fluid which may be a gas or a liquid, is introduced between the weld pairs to outwardly bulge the material of at least one of the liner and shell to define the channels.

Bulge formed cooling channels with a variable lead helix on a hollow

An improved method for aluminizing a ferritic material by forming an aqueous aluminum slurry composition, applying the aqueous aluminum slurry composition to the ferritic material to form a coating, adding a halide activator to the coated ferritic material and heating the coated ferritic material to a temperature of about 1275.degree. F. to about 1300.degree. F. for approximately 24 hours. The use of the lower temperature thermal cycle minimizes the change in the mechanical properties of a steel substrate.

Method for aluminizing a ferritic workpiece by coating it with an

A method for diffusion coating a workpiece with chromium (Cr), silicon (Si), aluminum (Al), or boron (B) by placing coated ceramic alumino-silicate fibers next to the workpiece and heating to diffuse the diffusion coating into the workpiece. A ceramic carrier is fabricated from the alumino-silicate fibers woven into a predetermined fashion. Alternately the ceramic carrier may be an elongated ceramic carrier. The aqueous diffusion coating composition is applied to the ceramic carrier and then the ceramic carrier is heated at a temperature of between about 150.degree. F. to 250.degree. F. prior to positioning the ceramic carrier proximate a surface of the workpiece. The ceramic carrier and the workpiece are subjected to an elevated temperature in a controlled environment for a sufficient time to cause at least one diffusion element to diffuse into the workpiece to provide the diffusion coating for the external, the internal, or both surfaces of the workpiece.

Method for diffusion coating a workpiece with Cr, Si, Al or B by placing

An improved method of diffusion coating a workpiece, such as ferritic tubing employing a ceramic carrier provided with a diffusion composition. The diffusion composition includes a diffusion element such as chromium, silicon, aluminum, and boron. The carrier is subjected to an elevated diffusion temperature in a controlled environment to diffusion coat either the external or internal surface of the workpiece.

Method of chromizing a workpiece by applying a coating containing

An austenitic alloy has high strength and corrosion resistance and includes from 27 to 32 weight percent nickel and 24 to 28 weight percent chromium. Up to 2.75 weight percent silicon, 3 weight percent copper and molybdenum and 2 weight percent manganese are included for contributing to the characteristics to the alloy rendering the alloy particularly useful for fabricating oil well tubular products. Only very low components of nitrogen, carbon, phosphorus and sulfur are included.

Austenitic Fe-Cr-Ni alloy designed for oil country tubular products

A method of fabricating a tube having enlarged ends and made of material which can be strengthened by cold working comprises fabricating a pre-form having the overall configuration of the tube but with increased outside diameters and a decreased length. The pre-formed tube is cold forged or cold rolled over its entire length to reduce its outside diameter while maintaining its inside diameter substantially fixed. This elongates the tube and reduces its cross-sectional area. Cold working is continued until the final desired dimensions for the tube are reached. This produces a strengthening effect by cold working over the entire length of the tube.

Growing community of inventors

Alliance, OH, United States of America

Dale F LaCount