Abstract: A guide for supporting sliding movement of a movable member includes a guide body having an outer surface, a first portion defining a first end of the guide body, and a second portion defining a second end of the guide body. A void is provided between the first and second ends and is defined by an inner surface of the guide body. A plurality of cooling projections project from the outer surface of the first portion, and a flange for stabilizing the guide projects radially from the guide body and defines a boundary between the guide's first and second portions. The guide may be adapted as, for example, a valve guide for use in an internal combustion engine for guiding the reciprocating sliding movement of a valve stem.

Abstract: An alloy having a composition, by weight, of about 0.025% or less carbon, about 0.5 to about 4.1% manganese, about 5.5 to about 6.2% silicon, about 11 to about 15% chromium, about 9.0 to about 15.5% nickel, about 0.8 to about 1.2% molybdenum and about 0.8 to about 2% copper and the remainder being essentially iron with incidental impurities. This composition results in lean alloy content in a high silicon austenitic stainless steel for concentrated sulfuric acid service while maintaining a corrosion rate similar to and competitive with existing alloys for such service. Acceptable characteristics were found when hot working was carried out in the range of about 2100.degree. F. to about 2200.degree. F. Annealing in the range of about 1925.degree. F. to about 2025.degree. F. is preferred, as is rapid water quenching after annealing.

Abstract: Methods are provided for annealing coils of austenitic stainless steels through the use of a batch annealing process. The preferred methods involved selecting compositions of austenitic stainless steel alloys having a sufficiently low weight percentage of carbon so that annealing of the austenitic stainless steel occurs without intergranular carbide precipitation at a temperature of less than about 1700.degree. F., which is well below the normal annealing temperature for austenitic stainless steels. The lower annealing temperatures allow for annealing in conventional batch annealing furnaces. The content of carbon in T-201L stainless steel was kept at less than 0.030 weight percent and the steel was successfully annealed at temperatures within a range of about 1650.degree. F. to about 1700.degree. F. The carbon content of T-304L stainless steel was kept at less than 0.015 weight percent and the steel was successfully annealed at temperatures within a range of about 1550.degree. F. to about 1700.degree. F.

Abstract: An aircraft canopy fracturing system includes a canopy having fore and aft portions and a region that is severable from the canopy to provide an opening therethrough for the egress of aircraft occupants. The severable region has a shape that inhibits passage of the severable region through the opening created in the canopy once the severable region is freed from the canopy and is displaced aftward relative to the canopy. The canopy fracturing system also may include one or more mechanisms that will impart an aftward impulse to the severable region of the canopy once it has been severed and freed from the remainder of the canopy.

Abstract: A process for manufacturing large diameter, spray formed billets, rings, or tubular forms by spraying atomized molten metal onto a rotating surface. The rotating surface has a collector surface that is maintained at a predetermined temperature or reheated to the predetermined temperature by an external heat source. The external heat source impinges upon the collector surface to form a reheated or preheated zone. The external heat may be provided by a laser, high temperature flame, plasma arc, electric induction or radiation source. The molten metal is sprayed onto the collector surface in the reheated or preheated zone. Apparatus for carrying out the process is also disclosed.

Abstract: A non-flowing pilot operated relief valve system having modulating action includes a relief valve and a pilot valve. The pilot valve includes a body forming a channel, an inlet port, a control port, and a vent port. A portion of the channel forms an inlet chamber in communication with the inlet port. A piston is axially movable within the channel and has a vent-valve seat communicating the control port and the vent port. A spool extends through the sleeve and is substantially coaxial with the piston. The spool is axially movable within the channel in response to fluid pressure within the inlet chamber. The spool has an inlet-valve seal member closable on the inlet-valve seat and a vent-valve seal member closable on the vent-valve seat. The spool is adapted such that the inlet-valve seal member is seated on the inlet-valve seat when the a vent-valve seal member is unseated from the vent-valve seat.

Abstract: Apparatus for increasing the diameter of an expansible reel. The apparatus includes an expansible sleeve member to be disposed over the reel and one or more elastic expansible members to maintain the sleeve member in contact with the reel, but which allow the reel to fully expand.

Abstract: A method and apparatus are provided for direct casting of metal alloys from molten metal to continuous sheet or strip product while synchronizing the speeds of the casting surface and driven rolls by providing a master-slave relationship for controlling the casting process.

Abstract: A method for producing a dual phase ferrite-martensite steel product from a cold rolled stainless steel. The method includes a step of rapidly heating the steel to annealing temperature in less than 30 seconds, followed by a step of cooling the heated steel at a cooling rate sufficient to transform austenite to martensite.

Abstract: A method of producing steel armor plate having improved resistance to penetration by projectiles. The armor plate provides for intended inclusions, generally elliptically shaped, in the steel oriented substantially parallel to the plate surface. Those inclusions result from at least one element of the steel composition selected from the group of sulfur and oxygen. The steel armor plate may be useful with an increased inclusion level on the front approximately one-half portion of the dual hardness composite steel armor plate so as to spread out the force of the impact over a wider area.

Abstract: A spherical plain bearing is provided having improved wear resistance under heavy axial and radial loads of a rotating shaft. The bearing includes a pillow block having a concave inner surface, a split cylindrical protective sleeve for mating with and detachably clamping around the shaft, the outer surface of the sleeve having a peripheral recess. The bearing includes a split cylindrical liner having an inner wear resistant surface for sliding contact within the recess of the protective sleeve, and multiple thrust plate rings, and a split cylindrical cartridge for holding the liner in the recess of the protective sleeve. The bearing includes a plurality of high wear-resistant elements for providing high wear resistance and low friction resistance when placed into the wear surfaces of the bearing.

Abstract: A method and apparatus are provided for refining the domain wall spacing of a grain-oriented silicon steel strip by mechanical scribing and by employing more than one row of staggered small diameter scribing rolls arranged to scribe a different portion of the surface of the strip in a manner that the entire surface of the strip is scribed and in which each row of scribing rolls co-operate with an anvil roll to support the strip.

Abstract: A method and apparatus are provided for refining the domain wall spacing of a grain-oriented silicon steel sheet by mechanical scribing using a solid anvil roll and a scribing roller including scribing segments arranged side by side along an arbor. The arbor carries inflatable bladder ribs along the length of the arbor to provide uniform contact pressure exerted by scribing surfaces of the strip.

Abstract: A pressure-bonded composite material includes at least one layer of a stabilized low carbon steel core material and one layer of a stainless steel joined at an interface, wherein the stabilized carbon steel includes columbium (niobium) and at least one other carbide-forming element in amounts effective to prevent carbon migration from the carbon steel to the stainless steel and the composite material has a physical grain size no larger than ASTM #6.

Abstract: A method for processing stainless steel strip or sheet provides for cleaning the surface of the stainless steel with a solution selected from the group consisting of water and alkaline-based and acid-based compounds to reduce oxide scale formation and to provide more uniform oxide scale during subsequent annealing by transverse-flux induction heating up to an annealing temperature of about 2300 degrees Fahrenheit and then electrolytically descaling by immersing in an aqueous solution electrolyte of one neutral salt, preferably, sodium sulfate maintained at a temperature in excess of 150 degrees Fahrenheit and with the use of low current density of 0.1 to 1.0 amperes per square inch to descale the steel substantially entirely, and thereafter applying a water rinse combined with wet wiping to the electrolytically-descaled stainless steel.

Abstract: A method and apparatus are provided for refining the domain wall spacing of a grain-oriented silicon steel sheet by mechanical scribing using a segmented anvil roller and a scribing roll. The segments of the anvil roll are arranged side by side along an arbor. The arbor carries inflatable bladder ribs along the length of the arbor to provide uniform contact pressure to the strip during scribing at the opposite side of the strip by the scribing roll.

Abstract: A method and apparatus are provided for direct casting molten metal to continuous strip of crystalline material by controlling the supply of molten metal to a casting vessel substantially horizontal to an adjacent moving casting roll surface, the molten metal level in the exit end being near the crest of the casting roll, separating a semi-solid cast strip substantially horizontally from near the crest of the casting roll and providing secondary cooling while transporting the separated strip to solidify the strip.

Abstract: A method and apparatus is provided for dynamically inspecting rolling mill rolls to locate surface defects in the rolls by applying an ultrasonic shear wave circumferentially to a rotating roll, wiping liquid from the surface to remove surface contaminants, and sensing reflections representative of any roll surface defects.

Abstract: A method and apparatus are provided for refining the domain wall spacing of a grain-oriented silicon steel sheet by mechanical scribing using a solid anvil roll and a scribing roller including scribing segments arranged side by side along an arbor. The arbor carries inflatable bladder ribs along the length of the arbor to provide uniform contact pressure exerted by scribing surfaces of the strip.

Abstract: A method and apparatus is provided for temporarily retaining slag and nonmetallic particles in a tundish while molten metal is being transferred through the tundish to other desired vessels. In particular, a meltable dam is placed into an opening between the chambers in a tundish, and the meltable dam retains an accumulation of molten metal in the pour chamber of the tundish with the slag and nonmetallic particles floating on top of that level such that the slag and nonmetallic particles are above the opening between the chambers of the tundish. The dam then completely melts and allows the transfer of molten metal through the opening. The slag and nonmetallic particles are retained in the pour chamber, however, because the molten metal being transferred into the pour chamber maintains the level in that chamber above the opening until almost all of the metal has been transferred into and through the chamber.