Abstract: A burn-resistant article transparent to microwaves and suitable for use in a microwave oven, either as a receptacle for supporting articles to be heated, for shelving, housing or parts of housing, is prepared from a sheet molding composition.

Abstract: Insulative coatings for electrical steels and methods of making them. The coatings are hard, glassy and smooth in nature, are easily cured and improve the magnetic characteristics of the electrical steels. The coatings are produced by applying to an electrical steel an aluminum-magnesium-phosphate solution containing Al.sup.+.sup.+.sup.+, Mg.sup.+.sup.+ and H.sub.2 PO.sub.4.sup.- in a specified relative relationship and from 0 to 60% by weight colloidal silica on a water-free basis. The solutions contain at least 45% by weight water. Chromic anhydride (CrO.sub.3) may be added to the coating solutions to improve wettability of the solutions, moisture resistance of the resulting coatings and interlaminar resistivity after stress relief anneal. An electrical steel coated with a solution of the present invention is thereafter subjected to a heat treatment to cure the insulative coating thereon.

Abstract: A system for interpolatively displaying the values of a one-dimensional array of data sources is disclosed. The output signals are multiplexed and successively made available to the input of a tandem of samples and hold circuits. Stored data from the tandem of sample and hold circuits is applied in parallel format to a computation unit which produces a continuous signal interpolatively representing the values of each spatially adjacent pair of data sources. Control circuitry provides appropriately timed sample and hold signals to the tandem of sample and hold circuits as well as initialization signals to the computation unit. The computation unit is initialized on every sample period in synchronism with the multiplexer and sample and hold tandem.

Abstract: A stress corrosion resistant austenitic stainless steel essentially consisting of from 15.5% to 20% chromium, from 11% to 14% manganese, from 1.1% to 3.75% nickel, from 0.01% to 0.12% carbon, from 0.20% to 0.38% nitrogen, and balance substantially iron. Phosphorous may be present up to 0.06% maximum, sulfur up to 0.04% maximum, and silicon up to 1% maximum. The steel has high strength at room temperature, good stability when severely cold worked, good cryogenic strength and toughness, wear resistance and excellent fusion welding characteristics, making it useful for a multiplicity of cryogenic applications, fabrication of welded articles, and cold-drawn wire.

Abstract: Anchoring systems, of the type comprising an anchor chain and a wire rope, characterized by a connector between the chain and rope which makes it possible to haul in without stopping to disconnect the hauling line, without requiring preorientation of the connector relative to the combination wheel or wheels over which it passes, and with a smooth transition between chain and rope on the wheel. Advantageous embodiments make it possible for the anchor line, including wire rope, connector, and chain, to traverse a more than 90.degree. change in direction on a single combination wheel without overstressing any component, particularly the end of the wire rope located at the rope-to-chain connection.

Abstract: A rigid, collapsible and nestable container is disclosed. The container is characterized by a rectangular deck having corner posts extending from each corner thereof. Each corner post includes a vertical lower section having male nesting means depending therefrom and female nesting means at its top. Upper corner post sections, also having female nesting means at one end thereof, pivotally engage respective lower sections and are swingable between a vertical position and a substantially horizontal position overlying the deck. A pair of side panels extend between and are each pivotally associated with two of the corner posts. Front and rear panels extend between the side panels in hinged relationship with the deck so as to be swingable between a vertical position and a substantially horizontal position overlying the deck. The container is fully collapsible for storage or shipment and is nestable both when fully collapsed and when fully erect.

Abstract: Application of a graphite film to at least the first roll contacted by a metal strip to which a coating metal has been applied. The roll may be scraped clean and the graphite film applied immediately after scraping. The graphite film may be applied by wiping the roll with a solid graphite block or by wiping the roll with a graphite colloidal suspension in a suitable carrier. In the latter event, the roll temperature must be high enough to vaporize the carrier so that strip contamination is avoided. The graphite film prevents adherence of coating metal particles to the roll surface whereby damage to the coated surface on the metal strip is prevented.

Abstract: A batch-type method of annealing large coils of silicon steel for magnetic purposes in an annealing furance of the type comprising an outer enclosure surrounding an insulated heating chamber in which the coils are supported, the furnace being capable of subjecting the coils both to a desired atmosphere and a vacuum. The method comprises the steps of locating the coils to be annealed in the furnace heating chamber; drawing and holding a vacuum within the outer enclosure and heating chamber to remove air therefrom; backfilling with a desired non-oxidizing annealing atmosphere; circulating the annealing atmosphere through the outer enclosure and heating chamber; heating the coils to a temperature of about 2200.degree.F. (1204.degree.C.) and soaking the coils at temperature with continued annealing atmosphere circulation; subjecting the coils to an initial, slow, unassisted cooling step down to about 1700.degree.F. (927.degree.C.); subjecting the coils to an intermediate cooling step down to about 1225.degree.F.

Abstract: An austenitic stainless steel which in solution treated condition exhibits excellent strength, hardness, and resistance to oxidation and sulfidation at elevated temperature, comprises from about 0.20 to about 0.50% carbon, about 0.01 to about 3.0% manganese, about 18 to about 35% chromium, about 0.01 to about 15% nickel, about 0.30 to about 1.0% nitrogen, about 0.10% maximum phosphorus, about 0.40% maximum sulfur, about 2% maximum silicon, up to about 0.75% cerium, and remainder substantially iron. Manganese is preferably restricted to a maximum of about 2.5% in combination with a preferred minimum chromium content of 21%. The steel has particular utility for fabrication into valves and valve parts for high performance diesel engines and gasoline engines, wherein exhaust valve temperatures are encountered within the range of about 1100.degree. to about 1600.degree. F and higher.

Abstract: Improved slag level detecting means wherein the sensing probes which generate an electrical potential across the slag metal interface are mounted beneath and in vertical alignment with the axis of the ladle trunnions to provide an accurate indication of metal level even when the ladle is tilted, the system including readily replaceable probes, electronic control means located remote from the ladle, as in the crane cab, and a cable and sheath assembly which can be quickly connected and disconnected relative to the ladle probes and is protected from the hostile environment of the ladle.

Abstract: Wire coating apparatus having a vertically upward wire pass line and wherein a molten coating metal is confined between entrance and exit portions of a common die element through which the wire passes, the exit die being substantially submerged in the molten coating metal.

Abstract: Cold reduced, annealed steel strip and sheet stock having 0.2% yield strength of 45 to 65 ksi with an elongation of at least 25%, or having a yield strength of at least 90 ksi with an elongation of at least 10%. A low carbon steel (0.02-0.10% C) typical of rimmed or drawing steel analysis is preferably vacuum degassed, and 0.02% to 0.18% columbium is added. The casting is hot rolled, coiled not higher than 1300.degree.F, cold reduced 40% to 70%, and annealed at low temperature for a time sufficient to restore desired ductility without substantially decreasing yield strength.

Abstract: A butterfly gate valve for control of water in treatment, waste water plants and the like, wherein the gate is mounted on a one-piece shaft. The lower end of the shaft rotates in a radial bearing, and a radial bearing and a thrust bearing are provided on the upper end of the shaft above the gate. The upper bearings are housed in a protective bonnet and may be sealed from access of water. The upper bearings are easily accessible through a removable bonnet cover. The vertical position of the leaf within the frame is adjustable by means of a rotatable threaded member reacting against a mating member above the frame.

Abstract: A melt for cold rolled, non-oriented silicon steel is deoxidized and thereafter treated with mischmetal or a mischmetal alloy to desulfurize the melt to 0.012% by weight sulfur or less without the formation of a polluting smoke. The deoxidation is carried out to the extent that, and the mischmetal is added in an amount such that, the melt composition, has a total cerium content of up to about 400 ppm. and preferably from about 75 to about 250 ppm.

Abstract: Insulative coatings for electrical steels and methods of making them. The coatings are hard, glassy and smooth in nature, are easily cured and improve the magnetic characteristics of the electrical steels. The coatings are produced by applying to an electrical steel an aluminum-magnesium-phosphate solution containing Al.sup.+.sup.+.sup.+, Mg.sup.+.sup.+ and H.sub.2 PO.sub.4 .sup.- in a specified relative relationship and from 0 to 60% by weight colloidal silica on a water-free basis. The solutions contain at least 45% by weight water. Chromic anhydride (CrO.sub.3) may be added to the coating solutions to improve wettability of the solutions, moisture resistance of the resulting coatings and interlaminar resistivity after stress relief anneal. An electrical steel coated with a solution of the present invention is thereafter subjected to a heat treatment to cure the insulative coating thereon.

Abstract: A method and means for the high temperature annealing of metallic coils whereby a coil to be annealed is held, with its axis in a horizontal position, in the annealing furnace by support means passing through the eye of the coil. The support means comprises a horizontal member passing through the eye of the coil and means to support the horizontal member in such a way that the coil contacts only the horizontal member.

Abstract: An economical process for making a molten ferrous alloy containing from about 5.0% to about 30.0% by weight chromium and from 0% up to about 25.0% by weight nickel. The process comprises four basic operations:1. partially reducing chrome ore and iron ore and (depending upon the type or reducing process used) converting the ores before, during or after the reducing step into an appropriate physical form for charging into a submerged-arc furnace;2. preparing a charge consisting primarily of the reduced chrome and iron ores (preferably still hot from the reducing step) and smelting and reducing this charge by the submerged-arc process in a first vessel to yield an unrefined chrome alloy high in carbon and silicon;3. transferring the molten alloy from the first vessel to a second vessel and directing gaseous oxygen thereagainst to reduce the carbon and silicon content thereof; and4.

Abstract: Insulative coatings for electrical steels having improved resistance to deterioration during stress relief anneals or other heat treatments carried on in reducing atmospheres. They may be produced by coating electrical steel with an aqueous solution of phosphoric acid, magnesium oxide and one or more additional mineral acids present in an amount sufficient to adjust the pH level of the solution to from about 0.5 to about 3.0. The mole ratio Mg/PO.sub.4 should be from about 0.6 to about 1.5.

Abstract: A stress corrosion resistant austenitic stainless steel essentially consisting of from 15.5% to 20% chromium, from 11% to 14% manganese, from 1.1% to 3.75% nickel, from 0.01% to 0.12% carbon, from 0.20% to 0.38% nitrogen, and balance substantially iron. Phosphorous may be present up to 0.06% maximum, sulfur up to 0.04% maximum, and silicon up to 1% maximum. The steel has high strength at room temperature, good stability when severely cold worked, good cryogenic strength and toughness, wear resistance and excellent fusion welding characteristics, making it useful for a multiplicity of cryogenic applications, fabrication of welded articles, and cold-drawn wire.

Abstract: Chromium-nickel-manganese steel characterized by good welding properties, which steel in the as-welded condition enjoys a combination of strength, ductility and impact resistance, along with good resistance to intergranular corrosion and good resistance to general corrosive attack. The steel contains about 20% to 25% chromium, about 6% to 17% nickel, about 3.5% to 7% manganese, about .15% to .50% nitrogen, with carbon not exceeding about .08, and with at least one of the three ingredients molybdenum, columbium and vanadium. For a best combination of properties at least two of the three ingredients are employed.