Abstract: A sintered stainless steel having an overall density of at least 95% of full density and a morphology comprised of regions of sintered austenitic stainless steel and regions of solidified liquid phase. Moreover, a sintered steel which is made by: pressing and sintering pre-alloyed powder consisting essentially of, by weight, up to 0.05% carbon, 22 to 26% chromium, 10 to 24% nickel, 2.7 to 5% molybdenum, 0.1 to 1% boron, up to 2.0% manganese, up to 2.0% silicon, balance iron and residuals.

Abstract: A positive-displacement fluid driven motor for use with down-hole drilling tools includes a cylindrical housing having a bore in which is mounted a rotor having folding blades mounted thereon with a peripheral space therebetween. Separators on the walls of the bore separate the space into a plurality of fluid chambers having inlet ports at the trailing ends of the separators. Discharge ports are located a short distance from the leading ends of the separators. Each blade is supported at its center of pressure to limit the outward angular displacement of the blade and transmit the driving force to the rotor and also minimize binding of the blade due to the effects of the fluid pressure. The operative part of each blade is capable of limited inward linear movement in its direction of width against its inherent elasticity to accommodate imperfections in the walls of the bore and particles of grit or sand at its sealing edge to minimize wear.

Abstract: A process for producing electromagnetic silicon steel having a cube-on-edge orientation. The process includes the steps of: preparing an aluminum-bearing melt of silicon steel; casting the steel into an ingot; soaking the ingot at an elevated temperature; hot rolling the ingot into a bar of less than 2 inches in thickness; hot rolling the bar into a band of less than 0.2 inch in thickness, when the bar is at a temperature of from 1800 to 1900.degree.F; heat treating the steel; cold rolling the steel at a reduction of at least 75%; decarburizing the steel; and final texture annealing the steel.

Abstract: An improved positive displacement motor suitable for use in downhole drilling at the end of a drill string and driven by fluid, e.g., liquid mud, under high pressures. The motor has a novel arrangement of inlet and outlet ports in longitudinally extending circumferentially spaced rows for providing fluid at a substantially uniform pressure along substantially the length of the blades driving the motor so as to equalize the driving torque along the length of the rotor and avoid pressure differentials tending to twist the blade. A continuous ring isolates the adjacent rows of inlet and outlet ports.

Abstract: Apparatus for supplying current to a moving strip includes a tank having an electrolyte and grids therein. The strip passes through the tank from a roll on the inlet side of the tank. A pair of conductor rolls bear on the strip in spaced apart relationship as it passes over the inlet roll. A D. C. power source has one side connected to the grids and the other side connected through separate leads to each end of each conductor roll. A current limit device may be provided in each lead.

Abstract: A composite material which has a substantially reduced incidence of defects after drawing, and a method of producing it. The composite material is comprised of at least one layer of plain carbon steel containing up to 1.5% of carbide former present in a carbide former-to-carbon ratio of from about 1.5 to about 25 and at least one layer of stainless steel. It is formed by pressure bonding carbon steel containing carbide former to stainless steel.

Abstract: The application describes a process for producing grain oriented silicon steel wherein advantages are realized from the utilization of starting material with a relatively high carbon content. The process involves a series of steps including hot rolling, heat treating, cold rolling, normalizing, decarburizing and annealing.

Abstract: A ferritic stainless steel consisting essentially of, in weight percent, from 10.5 to 19.0% chromium, up to 0.03% carbon, up to 0.03% nitrogen, up to 0.20% manganese, up to 0.20% silicon, up to 0.30% nickel, up to 0.10% aluminum, up to 0.20% copper, at least one element from the group consisting of titanium and molybdenum in an amount of titanium of from 4 (%C + %N) to 0.75% and in an amount of molybdenum of from 0.50 to 2.5%, balance essentially iron. Furthermore, a steel in which the titanium and molybdenum contents are present in respective amounts of less than 0.05 and 0.20% when they are present as residuals, and one in which the chemistry is balanced in accordance with the following equation:%C + %N + %Mn + %Si + %Ni + %Al + %Cu + % residual Ti + % residual Mo .ltoreq. 0.

Abstract: There is disclosed a process for reclaiming cemented metal carbide material by first subjecting the metal carbide material to catastrophic oxidation to produce a mixture of metal oxide and the oxide of the cement, reducing the metal oxide either mixed with the cement oxide or after being separated from it, and finally carburizing the reduced metal.

Abstract: A fine grained alloy containing 38-45% nickel, 3-15% chromium, up to 0.1% copper, from 0.1-1.0% titanium and the balance iron and residuals that is useful for production of glass-to-metal seals is disclosed.

Abstract: A fine grained alloy containing 38-45% nickel, 3-15% chromium, up to 0.1% copper, from 0.1-1.0% titanium and the balance iron and residuals that is useful for production of glass-to-metal seals is disclosed.

Abstract: A pressure bonded composite article and a method for producing it. The article is comprised of a layer of plain carbon steel containing up to 1.5% of carbide former, a layer of stainless steel, and a layer of not readily oxidizable metal therebetween. The method comprises the steps of superimposing the layers, heating them at a temperature of from 1200.degree. to 2400.degree.F, and subsequently hot rolling them.

Abstract: There is disclosed a method for producing austenitic ferrous alloys containing from 21-45% manganese and from 10-30% chromium by exposing the alloys in solid form to nitrogen or nitrogen compounds at a temperature of at least 1700.degree.F for a time period sufficient to raise the nitrogen content of at least the surface of the alloy to at least 0.85%.

Abstract: A substantially non-porous, austenitic stainless steel that is resistant to chloride pitting and a method of making it are disclosed. The steel includes from 21-45% manganese, from 10-30% chromium, from 1-4% nickel, from 0.85-3% nitrogen, up to 2% silicon, up to 1% carbon and the balance iron and residuals. In addition to containing elements within the above-noted composition ranges, the alloys must be such that:1. % Cr + 0.8(%Mn) - 11.8(%N - 0.1) - 1.23(%Ni) .gtoreq. 28.5 ##EQU1## The steels are cast and worked to avoid a dwell period in the temperature range 1000.degree.-1600.degree.F.

Abstract: There is disclosed a method for preparing nominally 13% chromium-0.3% columbium ferritic stainless steel by producing the steel to have very low content of residuals, carbon and nitrogen, hot rolling the steel, annealing the hot rolled steel, and cold rolling the annealed material to reduce the thickness at least 65 percent.

Abstract: A substantially nonporous, austenitic stainless steel, and a method for producing it; consisting essentially of, in weight percent, from 10 to 30% chromium, from 15 to 45% manganese, from 0.85 to 3% nitrogen, up to 1% carbon, up to 2% silicon, balance essentially iron and residuals. Moreover, a steel wherein said elements are balanced in accordance with the following equations: ##EQU1##%Cr + 0.8 (%Mn) - 11.88 (%N - 0.1) - 28.25 .gtoreq.

Abstract: Pieces of steel scrap are charged into a ladle by a magnet on a crane so that the central part of the charge is substantially denser than the peripheral part. A cover having a plurality of natural gas-oxygen burners mounted around its periphery is then placed on top of the ladle to obtain a substantially gas tight container except for a flue opening and some small openings due to a non-tight fit between ladle and cover adjacent the top. The burners direct their flames downwardly parallel to the sidewall of the ladle and the combustion gases are discharged through the flue opening. The flames are reducing in nature and the container is under a positive pressure. The heating is continued until the scrap is at a temperature of at least approximately 1,500.degree.F and preferably approaching the melting point of the scrap. Molten iron in substantially greater weight that the scrap and having a substantially higher carbon content is then poured into the ladle so that the majority of the scrap is melted.