Abstract: A gas regulating fitting that ensures simple manual operation is to be created. In particular, the device is to be capable of being switched both on and off in one operation. To that end, a microswitch (12) connected to an electronic control unit is arranged on the housing (1). The microswitch is operated when a tappet (10) arranged axially to the safety pilot valve (26) and the main valve (19) is manually operated. The electronic control unit thereby receives an electrical signal whereby the gas regulating fitting is activated in its switched-off state, and the gas flow flowing through the open safety pilot valve (26) is therefore ignited, whereas the holding current flowing to the thermoelectric safety pilot valve (26) is interrupted in the switched-on state of the gas regulating fitting, and the gas regulating fitting is therefore deactivated. The gas regulating fitting can be used to ignite and regulate a gas flow flowing to a burner.

Abstract: A safety breakaway connector begins with a body that receives a cooperating insert providing a coaxial flow path. The body has threads, a collar leading to an extension, and a hollow interior. The insert also has threads, a collar that leads to an inner wall, and a hollow interior. The inner wall fits snugly within the extension of the body. Generally, the insert simply slides into and interconnects with the body for quick installation. Two spaced apart biased check valves remain slightly outwardly from the narrow portions of the body and insert. A guard covers the body. Upon the application of the minimum force, the insert separates from the body, and the check valves abruptly close preventing further leakage of fuel. Alternatively, a strategically located O-ring or gasket seals the various components and withstands pressure variations.

Abstract: A separation or reaction unit (1; 1?; 81; 81?; 101) and a method for aseptically connecting such units. The separation or reaction unit (1; 1?; 81; 81?; 101) comprises at last one fluid inlet (3a, 3b, 5a, 5b; 3a?, 3b?, 5a?, 5b?; 85a, 85b; 103a, 103b) and at least one fluid outlet (3a, 3b, 5a, 5b; 3a?, 3b?, 5a?, 5b?; 85a, 85b; 103a, 103b). At least one of the inlet or outlet is sealed by at least one film (7, 9; 11; 87a, 87b; 107a, 107b) and the contact surface between the film and the separation or reaction unit is aseptic. The films are adapted to be mated with a corresponding film on another separation or reaction unit or on a fluid distribution unit (20; 57; 61) which the separation or reaction unit possibly should be connected with and said mated films are adapted to be pulled out together two and two after mating such that corresponding fluid inlets/outlets on the two connected units are mated aseptically.

Abstract: A fluid control valve includes adjacent filters located adjacent to each other in an axis direction of a sleeve and extending in a circumference direction of the sleeve. Each of the filters has a collecting portion covering a corresponding fluid port, a combine section at which a first end portion and a second end portion are combined with each other in the circumference direction, and a connector portion connecting the collecting portion to the first end portion in the circumference direction. The collecting portion of one of the adjacent filters and the connector portion of the other of the adjacent filters are located adjacent with each other in the axis direction. The combine sections of the adjacent filters are located with each other in the axis direction.

Abstract: A sea filtration system is provided for preventing users to dispose improper waste into sewage systems. In one embodiment, a sea filtration system includes a sewage system, a camera mounted outside a toilet room, wherein the camera is configured to capture a wrongful act by the user by capturing a face of a user after the user leaving the toilet room when industrial waste is detected, a toilet connecting to the sewage system, a computer server connecting to the toilet, a compartment in the toilet, when flushed, hold on to the industrial waste without flushing into the sewage system, a blockage sensor, an industrial waste sensor configured to detect if industrial waste is being flushed, and a toxic waste sensor configured to detect if toxic waste is being flushed.

Abstract: A hydronic distribution system includes self-regulating valves networked together and operable to share valve temperature and valve position information with a microprocessor or other type of controller. The microprocessor runs one or more algorithms that process the temperatures and positions of the valves and then computes a desired speed for one or more variable speed pumps within the system. Controlling the pumps to operate at the desired speed and still maintain the correct amount of process fluid flow needed by the system reduces the overall energy use of the hydronic distribution system, saves on the operational lives of the pumps, and increases system efficiency.

Abstract: Disclosed is a lubricant drain plug system for a casing of moving mechanical parts in lubricant. The system comprises an adapter plug body, an oil drainage assembly threadably mountable to the adapter plug body, the assembly having an outer plug with port holes, and a valve mechanism on the adapter plug body, the valve mechanism being positionable in either an on or off position. In use, the system is inserted into the casing so that the port holes are in the lubricant and the valve is positioned in the on position so that lubricant can flow from the casing out of the system. When the valve is off, lubricant flow is stopped.

Abstract: A water removal device to withdraw virtually all the water from the drain in the bottom of a swimming pool comprising an elongated lower suction or vacuum housing including a plurality of perforations or holes formed therein to receive water from a pool drain and an upper suction or vacuum source to create a suction or vacuum to draw water from the pool drain through the perforations or holes into and through the lower suction or vacuum housing to remove the water from the pool drain.

Abstract: A hydraulic system is disclosed. The hydraulic system may have a pump, a tank, a displacement actuator having first and second chambers, a regeneration valve, and a load-holding valve. The hydraulic system may also have a displacement control valve including a valve element, and a stationary cage portion at least partially forming a high-pressure passage fluidly connecting the pump and valve element, a low-pressure passage fluidly connecting the valve element and tank, a first displacement actuator passage fluidly connecting the valve element and first chamber, a second displacement actuator passage fluidly connecting the valve element and second chamber, a load-holding control passage fluidly connecting the valve element and load-holding valve, and a regeneration control passage fluidly connecting the valve element and regeneration valve.

Abstract: A removable liquid transport assembly configured to be readily installed in and removed from a liquid dispenser to permit the liquid dispenser to be readily sanitized. The removable liquid transport assembly preferably includes a liquid manifold, a valve assembly and a pump head. The removable liquid transport assembly is configured such that liquid can flow in a first direction through the removable liquid transport assembly to permit a liquid to be dispensed from a liquid dispenser and liquid can flow in a second direction back to a liquid storage container to prevent damage to one or more components of the liquid dispenser.

Abstract: Provided is a fuel pump module in which a portion of fuel transmitted from a fuel pump provided in a reservoir or fuel returned from an engine is supplied to a first jet and a second jet and a portion of the fuel is supplied from a first jet tower to a second jet tower through a connection tube connecting the first jet tower and the second jet tower to each other when the returned fuel passes through the first jet and the second jet and is then jetted to each of the first jet tower and the second jet tower to fill an inner portion of the second jet tower with the fuel, such that the fuel in a second space part of a fuel tank is rapidly transmitted, thereby making it possible to stably supply the fuel to the engine.

Abstract: The invention relates to a device (40) for reducing pollutants, in particular nitrogen oxides, in an exhaust gas flow of an internal combustion engine, comprising a reducing agent (46), in particular a urea-water solution, which is stored in a storage tank (42), a metering module, in particular a nozzle (68), for injecting the reducing agent (46) into the exhaust gas flow, and a pump (56, 100) for delivering the reducing agent (46) from a suction point (62) in the storage tank (42) to the metering module via lines (58, 66). According to the invention, the pump (56, 100) lies beneath a reducing agent level (44) in the storage tank (42), and a non-return valve is provided. As a result of the non-return valve, the device (40) is prevented from refilling with the reducing agent (46) after the reducing agent (46) is completely sucked back from the device (40) after shutting off the internal combustion engine, in particular after extended idle times of the internal combustion engine.

Abstract: An adjustable coupling assembly and drain inlet combination for adjusting the height of the drain inlet for draining a fluid from an area is disclosed. The assembly includes a first tubular cylinder having a first end which is constructed to be attached to the inlet of drain tile, and a second tubular cylinder having a first end which is constructed to be attached to the discharge of the drain inlet. One of the tubular cylinders has an end which is constructed to extend into the other tubular cylinder. A spiral groove on one of the tubular cylinders extends over a substantial portion of the length of that cylinder, and at least one projection is positioned on the other tubular cylinder and is positionable to extend into the spiral groove whereby when one of the tubular cylinders is rotated relative to the other tubular cylinder, the projection moves along the spiral groove, to adjust the total combined length of the first and second tubular cylinders and the height of the drain inlet.

Abstract: A single handle faucet is fixed on a basin with a first hole and two second holes and contains a body; a control valve set fixed on the body and including a handle located above a central position of the body to rotate the valve core; two inlet pipes connected with the control valve set to feed cold water and hot water individually and extending out of the first hole of the basin; an outlet pipe coupled with the control valve set to flow mixed water of the cold water and the hot water; two screw rods including two top ends to connect with two sides of the housing individually and two bottom ends extending out of the two second holes respectively; two nuts screwed with the two screw rods respectively and engaged with a bottom end of the basin so that the faucet is locked on the basin.

Abstract: A segmented positioning structure of a ceramic shunt valve having a shell, a plurality of segmented coupling portions, a water segregator, a segmented positioning plate, a plurality of segmented positioning portions and an elastic supporting member. The elastic supporting member is installed between the rotational positioning seat of the water segregator and the segmented positioning plate, so that the segmented positioning plate is elastically braced in an elastic floating state, and a spacing edge is located beside the locating rod for limitation of the segmented positioning plate. When the braking shaft lever is rotated, the segmented positioning plate will be in a floating state under the elastic bracing of elastic supporting member, in tune with the interlocking and disengagement state of the segmented positioning portion and segmented coupling portion. This could realize excellent elastic locking effect and reduce the abrasion between the segmented positioning portion and segmented coupling portion.

Abstract: A medical valve having a valve inside housing and a valve core. The valve core is installed within the housing. The housing is preferably an integrally-formed hollow cylindrical structure. An annular protrusion may be arranged on the outer surface of the housing and a seal ring may be arranged in the center of the inner wall of the housing. The valve core can be made of an elastic material as an integrally-formed cylindrical structure. A lock ring matched with the seal ring of the housing may be arranged on the outer surface of the valve core, and the lock ring can be integrally formed with the valve core. The medical valve inside disclosed by the invention is widely applied to the medical fields such as cushion mask, trachea cannula and laryngeal mask, No metal member is preferably employed, so with magnetic resonance imaging examination without causing interference.

Abstract: A one-way pressure relief valve having an integrated filter. One-way pressure relief valves may be applied to a product package to evacuate gas from the package. The integrated filter prevents materials within the package from interfering with closure or operation of the pressure relief valve. Certain pressure relief valve embodiments can be configured for optimal valve operation without need for a wetting agent while other pressure relief valve embodiments operate optimally with a wetting agent.

Abstract: A piston accumulator, having a pressure vessel; a cylinder, which is situated within the pressure vessel; an interspace formed between the pressure vessel and the cylinder; and a separating piston, which is provided movably in the cylinder; in which a hydraulic fluid acts upon on a first side of a separating piston, and a gas acts upon a second side of the separating piston; and in which the gas is in fluidic connection to the interspace and the hydraulic fluid is in fluidic connection to a connection on the cylinder.

Abstract: A temperature adaptive fluid damping system is provided. One embodiment of the temperature adaptive fluid damping system comprises two fluid chambers, a piston in fluid communication with the fluid chambers, and a fluid path between the fluid chambers. An elastomeric retaining element adjacent to the fluid path is constrained to deform substantially perpendicular to the fluid path, so that the retaining element is operable to vary the cross-sectional area of the fluid path inversely to a change in temperature.

Abstract: A water-transporting line includes an integrated heater system for protection against frost and the appropriate connection, attachment and control elements. A self-heating water conduit segment is provided that has an integrated heating device, which device encloses the outer surface of the water conduit segment. The various segments may be connected mechanically and electrically using corresponding connecting elements.

Abstract: A flow control device and a method of controlling a flow, the flow control device including a flow path for a fluid therethrough and a material at least partially defining the flow path, the material operatively arranged with a surface energy less than that of the fluid for passively impeding an undesirable component of the fluid more than a desirable component of the fluid.

Abstract: An inflatable plug assembly includes a first inflatable plug, a second inflatable plug, and a first mount coupled to the first inflatable plug. The first mount is configured to deliver fluid to and inflate the first inflatable plug. The inflatable plug assembly also includes a second mount coupled to the second inflatable plug. The second mount is configured to deliver fluid to and inflate the second inflatable plug. The second mount is secured to the first mount. The first inflatable plug and the second inflatable plug are independently inflatable.

Abstract: Disclosed is a multilayer structure useful for preparing highly abrasion-resistant protective liners, including tubular articles such as multilayer tubes or pipes.

Abstract: A system for providing more efficient insulation for heating and air conditioning ducts is disclosed. Specifically, a system comprising one or more layers of light-weight, rigid spacers made of non-conductive material attached over an air duct, is disclosed. The spacers contain air channels or air spacers, and can be pre-attached to the air duct prior to installation of the duct. The air duct/spacer combination is wrapped with reflective insulation material.

Abstract: A fire hose coupling, such as a quarter-turn Storz-style coupling, comprises a substantially annular body having a first end connected to a fire hose and a second end having internal engagement lugs for connecting to lugs on another coupling. The coupling includes at least one locking lever movable between an unlocked position and a locked position, the lever locking the annular body of the coupling to the other coupling. The one or more locking levers comprise a light-reflecting surface to improve visibility of the lever. This facilitates assembly and disassembly of the couplings in conditions of poor visibility.

Abstract: A method and apparatus comprising a structure. The structure is configured to be placed around a fluid line in a container that is configured to hold a fluid. The structure is further configured to reduce a flow of the fluid within a volume of the structure such that the fluid in the volume insulates the fluid line.

Abstract: An annulus assembly including a central fluid channel for flow of a central fluid therethrough, a circumferential fluid channel surrounding the central fluid channel, and a first thermal insulation layer intermediate the central fluid channel and the circumferential fluid channel, for direct fluid contact with the central fluid.

Abstract: Disclosed is a copolyamide including at least two repeat units selected from the group consisting of structures (I) to (IV), —C(O)(CH2)10C(O)NH(CH2)nNH—??(I); —C(O)(CH2)12C(O)NH(CH2)nNH—??(II); —C(O)(CH2)14C(O)NH(CH2)nNH—??(II); and —C(O)(CH2)16C(O)NH(CH2)nNH—??(IV); and n is an integer selected from 4, 6, 10 or 12; wherein at least one repeat unit is selected from structures (I) and (II); and any one the repeat units may be present up to about 92 mole percent. Also disclosed is a process for providing the copolyamide; and thermoplastic compositions and tubing including the copolyamides.

Abstract: The present invention relates to a process for producing insulated pipes, the use of a polyurethane system comprising an isocyanate component (a), a polyol mixture (b) and at least one catalyst for producing insulated pipes, wherein the cream time for the polyurethane system is less than the time for introduction of the polyurethane system into the pipe, the use of specific amines as catalyst in a polyurethane system for producing insulated pipes and also an insulated pipe which can be obtained by the process of the invention.

Abstract: A large scale geotextile tube includes a plurality of cylindrical geotextile segments permanently connected end-to-end via circumferential ribs. In one embodiment, each geotextile segment is formed of the sheet of geotextile fabric that has an overlapping region that measures at least 5% of the elongation at break length of the sheet and permanently connected with at least one transverse rib to form an axial closure.

Abstract: A textile sleeve for routing and protecting elongate members and method of construction thereof are provided. The sleeve has a wall of interlaced monofilament and/or multifilament yarns. Opposite edges of the wall extend along a central axis of the sleeve. The opposite edges are biased into a self-wrapping, overlapping relation with one another to bound a tubular cavity in an in-use first configuration. A plurality of elongate hinges formed with the interlaced yarns extend along the length of the sleeve in substantially parallel relation with the central axis, with the hinges separating relatively rigid, arcuate regions of the wall from one another. The hinges allow the arcuate regions to be moved from the expanded in-use tubular first configuration to a collapsed, second configuration nested with one another to allow significantly increased numbers of the sleeves to be shipped and stowed in a significantly reduced volume of space.

Abstract: A fabric with wefts that include hard yarns and elastomeric yarns in a predetermined arrangement such that at least one hard yarn is alternately arranged with at least one elastomeric yarn, the elastomeric yarns having a greater shrinkage ratio than that of the hard yarns; the hard yarns form under portions and over portions with respect to warps, said under portions being formed when said hard yarns pass along the back side of the warps and defining loop portions, and said over portions being formed when the hard yarns pass along the front side of the warps and define connection portions, wherein for each hard yarn, the number of warps passed by the loop portion is at least 6, and the elastomeric yarns form under portions and over portions with respect to said warps in a weave that is tighter than the weave of the hard yarns.

Abstract: In a processing device the wire-ends are fed circularly to the peripherally arranged processing units. A loop-layer grasps a leading wire-end and lays it in a wire-loop. The wire is then advanced by a belt apparatus, and a loop-guide picks up a loop-end and moves upward until the wire-loop has attained the desired dimension and transfers the loop-end of the wire-loop to a holding element of a rotary star, which, by means of the loop-guide, is displaceable along a linear axle, depending on the length of the wire-loop.

Abstract: A dispensing apparatus for delivering fluid or liquid to a container (e.g. a bottle), has a container holding device and a fluid delivery system delivering fluid to a dispensing outlet under control of an actuation member, which causes the fluid delivery system to deliver fluid in response to movement of the actuation member from its start position. A dispensing lock has a first position in which it blocks movement of the actuation member from its start position, and a second position in which it permits movement of the actuation member. A release member that releases the dispensing lock includes a movable release member which is moved by the container, during its insertion into the refill position, so as to release the dispensing lock by bringing the dispensing lock to said second position, thus enabling fluid to be delivered.

Abstract: This invention relates in part to a method for preparing a pressure vessel for receiving high purity acetylene at elevated pressure. The method involves providing a porous filler-containing pressure vessel, deep cleaning the porous filler-containing pressure vessel, purifying a solvent, and charging the purified solvent into the deep cleaned, porous filler-containing pressure vessel. The pressure vessel is then charged with high purity acetylene for storage, transport and/or delivery of the high purity acetylene. The high purity acetylene may be useful as a source material for depositing carbon and carbon-containing films in semiconductor applications.

Abstract: A method and apparatus comprising a tube, an opening in the tube, and a valve associated with the opening. The tube is configured to carry an inert gas in a fuel tank. The valve is configured to control an amount of the inert gas that exits the opening based on a level of fuel relative to the opening.

Abstract: A loading apparatus for distributing particulate matter during loading of the particulate matter into a transport container, the apparatus including a housing including an inlet and an outlet, each configured on a side of the housing so that particulate matter can pass through the housing from the inlet to the outlet and from the outlet along a flow path of the particulate matter into a transport container; a rotary drive operatively supported with respect to the housing; and a rotatable member operatively connected with the rotary drive and supported with respect to the housing so as to be rotatable within the flow path for spreading particulate matter within the transport container in a radial direction away from the flow path of the particulate matter from the housing outlet, the rotatable member comprising a central axis and at least two curved arms extending radially from the central axis.

Abstract: An apparatus for the introduction of air and/or sealant into a tire includes a container for the sealant which has an inlet and an outlet, wherein the outlet can be connected to the inlet end of a hose whose outlet end can be connected to the tire to be filled and includes a pressure generation means which can be selectively connected to the inlet of the container or to the inlet end of a hose whose outlet end can be connected to the tire to be filled.

Abstract: A feeding device includes a material pipe, a first container, a second container and a constant-length linkage mechanism. The material pipe is configured for feeding a first material. The first container is configured for receiving the first material and supplying a timed amount of the first material to a first material feed port. The second container is configured for storing a second material and supplying the second material to a second material feed port. The constant-length linkage mechanism is connected to the first container and the second container. When the first container is actually supplying the first material to the first material feed port, the constant-length linkage mechanism allows the second container to supply the second material to the second material feed port simultaneously.

Abstract: An apparatus and method are provided for filling multi-chamber containers with different loose bulk materials. The apparatus and method may be particularly well-suited to packaging at least one bulk material, which is susceptible to water, chemicals, or other contaminants, with at least one other bulk material. The apparatus is a machine that includes separate hoppers for handling the separate bulk materials, and directs the separate bulk materials into different chambers of a multi-chamber container, which is then transported away from the machine for storage or use. The machine may include one or more movable hoppers supported on tracks, for moving the bulk materials to the hoppers that direct the bulk materials into different chambers of the multi-chamber container. A controller and data logger may be provided to control the apparatus and record the quantity and/or weight of the contents of each multi-chamber container.

Abstract: A woodworking machining apparatus includes a bed, a machining assembly, a driving mechanism and a clamping mechanism. The clamping mechanism is mounted on the bed and is movable relative to the machining assembly. The clamping mechanism has a height adjuster and a holding adjuster. The height adjuster includes a height adjusting base, a sliding rod, first connecting rod, a second connecting rod, a height adjusting lever and a stabilizing board for stably lifting the holding adjuster. The holding adjuster includes a holding base, two clamping sheets and a holding lever for keeping a wood workpiece in a middle of the holding adjuster. The wood workpiece is clamped between the clamping sheets and is lifted by the height adjuster. Therefore, an axis of the wood workpiece can be aligned with the machining assembly.

Abstract: A method for producing a workpiece having properties which are adjustable across a wall thickness or strip thickness of the workpiece, includes the steps of subjecting the workpiece to a decarburizing annealing treatment under an oxidizing atmosphere and to an accelerated cooling and/or a cold forming for generating a property gradient of the workpiece, wherein the workpiece is made of an austenitic lightweight steel which has an alloy composition which includes by weight percent 0.2% to 1% carbon, 0.05% to <15% aluminum, 0.05% to 6.0% silicon, 9% to <30% manganese, and at least one element selected from the group consisting of chromium, copper, boron, titanium, zirconium, vanadium and niobium, wherein chromium=4.0%; titanium+zirconium=0.7%; niobium+vanadium=0.5%, boron=1%, the remainder iron including common steel companion elements.

Abstract: A cold rolled steel sheet with excellent bendability contains C at 0.15 to 0.30%, Si at 0.01 to 1.8%, Mn at 1.5 to 3.0%, P at not more than 0.05%, S at not more than 0.005%, Al at 0.005 to 0.05% and N at not more than 0.005%, the balance being Fe and inevitable impurities, and has a steel sheet superficial soft portion satisfying: Hv(S)/Hv(C)?0.8??(1) wherein Hv(S) is hardness of the steel sheet superficial soft portion, and Hv(C) is hardness of a steel sheet core portion, 0.10?t(S)/t?0.30??(2) wherein t(S) is thickness of the steel sheet superficial soft portion, and t is the sheet thickness.

Abstract: Ni-based Cr- and P-bearing alloys that can from centimeter-thick amorphous articles are provided. Within the family of alloys, millimeter-thick bulk-glassy articles can undergo macroscopic plastic bending under load without fracturing catastrophically.

Abstract: A high-temperature solder with multi-layer structure and method for manufacturing the same are disclosed. The high-temperature solder with multi-layer structure comprises: at least one first substrate and a second substrate. Wherein a first metal layer is formed on one surface of the first substrate by way of electroplating, and a second metal layer and a third metal layer are sequentially formed on the two surfaces of the second substrate through the electroplating. The first substrate is stacked on the third metal layer of the second substrate by the surface thereof provided with the first metal layer, so that the third metal layer and the first metal layer may jointly form an intermetallic (IMC) layer by way of the solid-liquid interdiffusion joint, in which the IMC layer includes at least one intermetallic compound for making the melting point of the high-temperature solder with multi-layer structure higher than 300-deg Celsius.

Abstract: A method for manufacturing a metal assembly including an aluminum sheet and at least one metal sheet. An aluminum sheet is treated by heating to a temperature of between 80% and 100% of the melting temperature of the material of which it is comprised for a sufficiently long duration to create and stabilize an alpha alumina layer at the surface of the aluminum sheet. The sheet is then cooled. A metal sheet having a ductility less than or equal to the ductility of the alumimum sheet after cooling is provided, which has surface irregularities having a depth greater than or equal to the thickness of the alpha alumina layer. The aluminum sheet and the metal sheet are roll bonded in a rolling mill to produce the metal assembly, wherein the rolling mill includes at least one cylinder, the outer rolling surface of which is provided with raised portions.

Abstract: A high-strength galvanized steel sheet contains C: 0.04% or more and 0.10% or less, Si: 0.7% or more and 2.3% or less, Mn: 0.8% or more and 2.0% or less, P: 0.03% or less, S: 0.003% or less, Al: 0.1% or less, and N: 0.008% or less on a mass percent basis, and the remainder of iron and incidental impurities. The C content [C%] (% by mass) and the Si content [Si%] (% by mass) satisfy [C%]×[Si%]?0.20. A ferrite phase constitutes 75% or more, a bainitic ferrite phase constitutes 1% or more, a pearlite phase constitutes 1% or more and 10% or less, and a martensite phase constitutes less than 5% on an area ratio basis. The area ratio of the martensite phase/(the area ratio of the bainitic ferrite phase + the area ratio of the pearlite phase) is 0.6 or less.

Abstract: A case hardening steel includes by mass %, C: 0.1% to 0.5%, Si: 0.01% to 1.5%, Mn: 0.3% to 1.8%, S: 0.001% to 0.15%, Cr: 0.4% to 2.0%, Ti: 0.05% to 0.2%, Al: limited to 0.2% or less, N: limited to 0.0050% or less, P: limited to 0.025% or less, O: limited to 0.0025% or less, and the balance of Fe and inevitable impurities, wherein the number d of sulfide having an equivalent circle diameter more than 5 ?m per 1 mm2 and a mass percentage [S] of S satisfy: d 500×[S]+1.

Abstract: A method for manufacturing high-Si cold rolled steel sheets includes heating a cold rolled steel sheet with a direct flame burner (A) having an air ratio of not more than 0.89 when the temperature of the cold rolled steel sheet that is being increased is in the temperature range of not less than 300° C. and less than Ta° C., subsequently heating the cold rolled steel sheet with a direct flame burner (B) having an air ratio of not less than 0.95 when the temperature of the cold rolled steel sheet is in the temperature range of not less than Ta° C. and less than Tb° C., and subsequently soak-annealing the cold rolled steel sheet in a furnace having an atmospheric gas composition which has a dew point of not more than ?25° C. and contains 1 to 10 volume % of H2 and the balance of N2.

Abstract: Disclosed is high strength spring steel that can limit the depth of pitting occurring when corroded and therefore possesses high strength as well as excellent pitting corrosion resistance and corrosion fatigue property, with a composition containing: C: greater than 0.35 mass % and less than 0.50 mass %; Si: greater than L75 mass % and less than or equal to 3.00 mass %; Mn: 0.2 mass % to 1.0 mass %; Cr: 0.01 mass % to 0.04 mass %; P: 0.025 mass % or less; S: 0.025 mass % or less; Mo: 0.1 mass % to 1.0 mass %; and 0: 0.0015 mass % or less, under a condition that a PC value calculated by PC=4.2×([C]+[Mn])+0.1×(1/[Si]+1/[Mo])+20.3×[Cr]+0.001×(1/[N]) is greater than 3.3 and equal to or less than 8.0. Also disclosed is a preferred method for manufacturing the same.