311 results about "Stainless steel electrode" patented technology

An apparatus for incontinence detection and notification comprises a notification component, for providing notice that an incontinent event has occurred, and a sensor. The sensor includes a sensing pad for collecting and retaining fluid resulting from the incontinent event, and a circuit housed within the sensing pad. The circuit has a pair of stainless steel electrodes, which are in electronic communication with the notification component. A closed circuit is created between the electrodes by the fluid resulting from the incontinent event, causing an electronic signal to be communicated to the notification component. The circuit may also include a plurality of connectors placed in electronic communication with the notification component to diagnose a disconnected or poorly connected circuit.

The invention relates to a method for preparing a flexible carbon nano tube transparent conductive thin-film material and an electrodeposition device, which are suitable for preparing uniform, high-transparency and high-conductivity flexible transparent conductive thin films. The method comprises: dispersing carbon nano tubes in aqueous solution by using an anionic surfactant under the action of ultrasonic waves, centrifuging the solution, using supernate as a plating solution and adding ammonia to make the plating solution alkaline; uniformly depositing the carbon nano tubes dispersed in theplating solution on a polished surface of a stainless steel electrode by using an electro-deposition method to obtain uniform carbon nano tube thin films with a thickness of 20 to 200 nanometers; andtransferring the carbon tube thin films to the surface of a flexible and transparent polymer substrate to form flexible, transparent and conductive thin films. The electrodeposition device mainly comprises an adjustable stabilized direct current power supply and a rectangular electrophoresis tank with a stainless steel inert electrode plate, wherein carbon nano tubes deposits on a polished positive plate to form films. The method and the electrodeposition device are simple and easily controllable in process parameters and can be used in large-area and continuous preparation of flexible, transparent and conductive films.

The invention discloses a stainless steel compound welding steel pipe and a manufacturing method thereof. The stainless steel compound welding steel pipe is formed by welding stainless steel compound hotly-rolled rolling plates through a welding line, wherein the welding line is formed by a stainless steel compound welding line and a carbon steel welding line. The manufacturing method comprises the following steps of: milling an edge and arranging a groove; when putting a stainless steel compound layer on the inner layer, firstly utilizing gas shield welding to weld a middle layer; then, utilizing a stainless steel welding strip to weld a stainless steel compound layer welding line in an argon arc welding manner; then, utilizing a carbon steel welding strip to weld the carbon steel welding line by a submerged-arc welding manner; when the stainless steel layer is less than 0.9 mm, directly welding a stainless steel welding line by submerged-arc welding; and when the stainless steel compound layer is located at the outer layer, firstly welding the carbon steel welding line by adopting the carbon steel welding strip and the submerged-arc welding, and adopting the stainless steel welding strip and the argon arc welding manner to weld the stainless steel compound layer welding line. According to the stainless steel compound welding steel pipe and the manufacturing method thereof, the manufactured stainless steel compound welding steel pipe has high structural strength and strong corrosion resistance; and the bonding strength of an inner pipe and an outer pipe is not less than 200 MPa.

The invention discloses a welding method for a stainless steel composite board pressure vessel shell and an insert-type stainless steel connecting pipe. The method comprises the steps of a) arranging a pipe hole of the stainless steel connecting pipe in a stainless steel composite board pressure vessel shell, and manufacturing a pipe hole wall to be a primary bevel with a K shape or a single V shape; b) performing bead-welding on a primary bevel surface by using high chromium nickel stainless steel welding rods to form a transition isolating layer with certain thickness, so as to form a secondary bevel; c) carrying out stress-relief heat treatment on the stainless steel composite board pressure vessel shell after the bead welding; and d) welding corner connecting joints between the stainless steel connecting pipe and the stainless steel composite board bead-welding layer by using stainless steel welding rods with different materials according to a stainless steel composite layer on a composite board. As the transition isolating layer with the certain thickness is firstly bead-welded on the primary bevel of the basic layer side of the stainless steel composite board by using the high chromium nickel stainless steel welding rods, and then the corner connecting joints are welded by the stainless steel welding rods, so that carbon steel and low alloy steel components are transited into stainless steel components, the welding line plasticity can be transited from low to high, cracks are avoided, and the using performance is reliable.

The spiral complex steel tube is made by processing on common spiral tubes through the procedures of selecting roll plates based on the tube caliber, dismantling the roll, rectifying and smoothening, milling, forming, in and out welding, inspection, fixed dimensional cutting, flatted edging, putting to the warehouse, with the roll plates being of stainless carbon steel complex ones, welding using stainless steel weld bar.

The invention discloses a double-phase stainless steel electric welding bar, and relates to the stainless steel electric welding field of electric arc welding. The invention provides a novel titanium-calcium type double-phase stainless steel electric welding bar, which has good welding performance such as little splash, low cost, good slag removal performance and the like. The electric welding bar is characterized in that: according to the coating formula, the electric welding bar comprises the following components in part by weight: 35 to 38 parts of rutile, 8 to 10 parts of natural mica, 1 to 2 parts of potassium titanate, 5 to 7 parts of marble, 10 to 12 parts of iron powder, 1 to 2 parts of bentonite, 2 to 3 parts of electrolytic manganese, 3 to 5 parts of fluorite, 1 to 2 parts of potassium feldspar, 1 to 2 parts of sodium alginate, 2 to 3 parts of chromium nitride, 20 to 24 parts of chromium metal, 8 to 10 parts of ferromolybdenum, 2 to 4 parts of magnesite, 2 to 4 parts of nickel powder and 1 part of Teflon. The welding process performance of the stainless steel welding bar is improved, and particularly the application range of the stainless steel welding bar is enlarged during welding, so the double-phase stainless steel electric welding bar has good welding performance such as good electric arc stability, little splash, low cost, good slag removal performance and the like.

The invention provides a preparation method of high-nitrogen stainless steel spherical powder. The preparation method comprises the following steps: preparing materials according to stainless steel components and carrying out a melting process of a mother alloy ingot; preparing the mother alloy ingot into a common stainless steel electrode bar through forging and machining; carrying out pre-vacuumizing treatment on atomization equipment and introducing high-purity nitrogen gas; conveying the electrode bar into an atomization chamber through a feeding system and heating the end face of the electrode bar by using a plasma torch; ionizing the nitrogen gas in an electric arc region into nitrogen ions, high-energy nitrogen molecules and un-ionized nitrogen neutral atoms so as to improve the nitrogen content of stainless steel; preparing metal liquid drops by using a centrifugal effect of a rotary electrode and instantly condensing the metal liquid drops into spherical metal powder; after cooling the high-nitrogen stainless steel spherical powder, removing non-metal impurities through an electrostatic impurity removing device; and finally, carrying out powder package by adopting multilayered vacuum heat sealing. The preparation method of the high-nitrogen stainless steel spherical powder has the characteristics of high production efficiency, strong batch stability, high fine powder yield and the like; and the stainless steel spherical powder with high nitrogen content, good purity, strong mobility and smooth and clean surface can be easily prepared.

A stainless heat-proof self-protecting flux-cored wire for a magnesium smelting reduction tank belongs to the technical field of materials processing engineering. A normal stainless steel band 304L or common carbon steel serves as a coating layer, and alloys in a powder core are rutile, sodium carbonate, feldspar, compound fluorides, chromium, nickel, manganese, molybdenum, chromium nitride, aluminium-magnesium alloy, misch metal and iron power. Compared with a conventional stainless steel welding rod, the stainless heat-proof self-protecting flux-cored wire has the advantages that higher welding current can be used; higher welding speed can be realized; the production efficiency is improved; and the labor intensity is lowered; c. Compared with a conventional stainless steel submerged-arc welding solid wire, the stainless heat-proof self-protecting flux-cored wire has the advantages that all-position welding can be realized; the heat input is small; the slag detachability is good; and the manufacturing technique is simpler. A welded joint formed by using the stainless heat-proof self-protecting flux-cored wire provided by the invention has favorable heat resistance, oxidation resistance, vulcanization and corrosion resistance and high-temperature creep resistance compared with welded joints formed by welding the stainless steel welding rod and the stainless steel solid wire.

The invention relates to a special stainless steel electrode for a deep refrigerating project, belonging to the field of welding material; the special stainless steel electrode is formed by mixing the following powered raw materials b weight parts: 38-46 parts of rutile, 12-15 parts of marble, 1-3 parts of titanium pigment, 1-3 parts of quartz, 4-6 parts of mica, 4-6 parts of silicon iron, 2-4 parts of ferrotitanium, 6-8 parts of electrolytic manganese, 3-5 parts of chromium metal, 1-3 parts of calcium solvent, 1-3 pars of sodium carbonate, 4-7 parts of cryolite, 6-8n parts of feldspar, and potassium sodium water glass with 2 percent of total weight of powered materials; the mixture is stirred uniformly and is press-coated on a stainless steel core wire to form a stainless steel electrode. The ferrite content in weld metal is suitable, ferrite number FN of the weld metal is 6-8; the weld metal has good minus 196 DEG C low temperature impact property, the average value of the V-shaped impact work of the weld metal at below 196 DEG C is 45j, thereby completely meeting engineering needs.

A welding stainless steel electrode with improved slag detachability and welding quality is composed of a core and a coated flux layer prepared proportionally from rutile, feldspar, marble, fluorite, wollastonite, megnesite, titaniunm oxide powder, hematite, aluminum fluoride, mice, barium carbonate, Cr, Ni, sodium carbonate, electrolytic manganese and ferrotitanium.

The invention discloses a measurement device for detecting the porosity of saturated soil and an application method of the device. The measurement device comprises a cutting ring, a stainless steel electrode, a cutting ring, an organic glass box and an impedance tester. When the impedance of a soil sample is measured, the cutting ring is selected according to the property of the soil sample; the stainless steel electrode is connected with the impedance tester through a connecting wire; when the impedance of pore water is measured, the organic glass box is selected and the stainless steel electrode is connected with the impedance tester through the connecting wire; and a frequency selector and an electric level adjuster are connected with a computer through the impedance tester. The device disclosed by the invention can be used for collecting the soil sample, preparing the saturated soil sample, setting electric signal frequency and impedance testing voltage and determining the resistivity of the saturated soil and pore water; and soil properties and cementation factors are selected according to the property of the soil sample and the porosity is obtained by the computer. The measurement device disclosed by the invention has the characteristics of simplicity and feasibility, low cost, short measurement period, accurate result and the like; expensive equipment is not needed and an operation method is simple; and the measurement device can be operated in a laboratory or a filed and the practical applicability is very high.

The invention discloses an industrial production method of a chromium-free white cast iron with high wear resistance. The method comprises the following steps: the content of each component in the cast iron are (mass percent %): 2.8 to 3.1 of C, 0.8 to 1.4 of Si, 0.5 to 0.8 of Mn, 0.9 to 1.1 of Cu, 0.6 to 0.8 of Mo, 0.3 to 0.5 of V, 0.18 to 0.22 of B and the balance of Fe; the amounts of a modifier added in every 100 unit mass of the cast iron are: 0.6 to 1.0 of Re, 0.1 to 0.3 of Al, 0.1 to 0.3 of Nb and 0.1 of N; the raw materials for cast iron are added into a medium frequency induction furnace for melting, (bauxite is employed for producing crucible), the chromium-free cast iron is prepared, the modifier is added at the bottom of a ladle according to a proportion when the cast iron is casted; the obtained chromium-free cast iron is performed by a heat treatment, the chromium-free white cast iron with high wear resistance can be obtained; according to the method, the chromium element which is the cheapest can be removed, the performance of the obtained cast iron material of the invention can be reached to a performance of a high chromium cast iron through a heat treatment. A common stainless steel welding rod is employed for repair welding, so that the material cost is greatly reduced, and chromium-free white cast iron with high wear resistance is convenient for industrialized production.

The invention discloses a two-phase stainless steel electrode, which comprises a core wire and a coating, wherein the coating is coated on the outer wall of the core wire and accounts for 0.4 to 0.5 percent of the total weight of the electrode. The core wire comprises the following components in percentage by weight: 0.005 to 0.030 percent of C, 0.01 to 0.20 percent of Si, 1.50 to 2.50 percent ofMn, 0 to 0.025 percent of P, 19.0 to 22.0 percent of Cr, 9.0 to 11.0 percent of Ni, 2.5 to 3.5 percent of Mo and the balance of Fe. The coating comprises the following components in percentage by weight: 8 to 20 percent of calcium carbonate, 2 to 15 percent of barium carbonate, 5 to 15 percent of calcium fluoride, 6 to 17 percent of strontium fluoride, 4 to 16 percent of barium fluoride, 9 to 18 percent of cryolite, 4 to 10 percent of rutile, 1 to 5 percent of titanium white, 2 to 8 percent of silicon dioxide, 3 to 9 percent of chromium powder, 1 to 1.5 percent of molybdenum powder, 0.1 to 4 percent of magnesium powder and 5 to 13 percent of iron powder. After the coating components are uniformly mixed, an adhesion agent is added into the mixture. The two-phase stainless steel electrode has high strength, high tenacity and intercrystalline corrosion resistance; and during welding, an electric arc is stable, splashing phenomena is reduced, a welding seam is well molded, slag is easy toremove, and the electrode has high operability.

The invention discloses a high-intensity stainless welding rod used for underwater wet welding. The stainless welding rod used for underwater wet welding comprises two parts including a covering and a core wire and is characterized in that the core wire is 304L stainless steel and the covering is composed by rutile, feldspar, dolomite, carboxymethyl cellulose, manganese powder, silicon iron and nickel powder. The covering comprises, by weight, 40%-52% of rutile, 20%-30% of feldspar, 5%-10% of dolomite, 5%-10% of carboxymethyl cellulose, 5%-9% of manganese powder, 1%-4% of silicon iron and 0%-5% of nickel powder. The high-performance rod used for underwater wet welding is simple in preparation procedure, simple in arc starting in welding, stable in electric arc combustion, good in arc restarting capacity, and beautiful in shape of a gained welding joint. The strength of extension of a butt joint can reach 530 Mpa. When the cold bend angle of the butt joint is 180 degrees, the butt joint is still in good condition and no fissures occur. The stainless welding rod used for underwater wet welding has the advantages of being simple and simple in process, convenient to test and operate, high in production efficiency and the like.

A method of welding with high nickel content and duplex stainless steel electrodes using adaptive outer loop control to change at least one of a peak current or pulse frequency of a pulse waveform used for welding. The pulse waveform is changed based on a detected change in contact tip to work distance between the electrode and the work piece. The arc generated between the work piece and the electrode is shielded by a shielding gas which contains carbon dioxide and an inert gas.

The invention discloses an electrochemical synchronous nitrogen and phosphorus removal apparatus and a municipal sewage treatment method, and belongs to the technical field of sewage treatment. A dimensionally stable electrode, an iron electrode, an aluminum electrode, a magnesium electrode and a copper modified stainless steel electrode which are commonly used in an electrochemical water treatment technology are combined to realize the nitrogen and phosphorus removal treatment of the municipal sewage in a same electrolytic cell. The apparatus has the advantages of simple structure, operation convenience, high efficiency, stable indexes of discharged water, and realization of the large-scale automatic sewage treatment. The municipal sewage method has the advantages of simple technology, operation convenience, manpower and material resource saving, low energy consumption, high removal rate of sewage pollution indexes, and realization of the removal rate of each of the municipal sewage indexes comprising the chemical oxygen demand, nitrate nitrogen, ammonia nitrogen and total phosphorus to reach above 92%.

The invention relates to a method for treating landfill leachate on the basis of electro-Fenton and electroflocculation coupling. According to the method, ferrum or a stainless-steel electrode servesas an anode, carbon fibers or modified carbon fibers serve as a cathode, dissolved oxygen is subjected to a two-electron oxygen reduction reaction on the surface of the cathode so as to produce hydrogen peroxide, and the produced hydrogen peroxide and Fe(II) produced by the anode are subjected to a catalyzed reaction so as to produce a strong oxidant hydroxyl free radical; and anode-produced and ferrous-oxidated-produced Fe(III) is subjected to a series of hydrolysis and polymerization processes so as to form a variety of hydroxyl complexes and hydroxides, and thus, colloidal impurities, suspending impurities and heavy-metal ions in the landfill leachate are subjected to flocculating settling and are separated. According to the method, hydrogen peroxide is produced in situ, the risk generated during the transportation, storage and use of the hydrogen peroxide is avoided, the treatment process is clean, and hydrogen peroxide and a flocculant are not required to be externally and continuously added. According to the method, electroflocculation and electro-Fenton technologies are combined, electrode materials are cheap and readily available, the preparation method is simple, the treatment cycle is short, and refractory organic matters and heavy-metal ions can be effectively removed from the landfill leachate.

Handheld devices using an array of stainless steel electrodes located on an edge and/or back of the handheld devices for acquiring electrodermal activity are provided. The stainless steel electrode array may allow for the skin conductance level (SCL) or skin conductance response (SCR) on an individual to be measured and collected. The skin conductance signal may be related to sympathetic nervous system activity which is a major component of human emotion, known as arousal, or emotional intensity such as anxiety, stress, fear, or excited, etc.

A stainless steel electrode belongs to the field of welding materials, and is characterized in that chemical components of the electrode (in weight percent) include 40% of rutile, 8% of potassium feldspar, 3% of iron ores, 1.8% of potassium titanate, 1.8% of titanium white powder, 1.8% of metal chromium, 2.4% of fluorite (dried), 2.4% of cryolite, 8% of electrolytic manganese, 0.18% of bismuth oxide, 12% of micro-carbon ferrochromium, 7% of mica (dried), 1.5% of alginate calcium, 0.4% of ferroaluminium and 9.72% of marble. Compared with the prior art, the stainless steel electrode can generate arc, can also be melted to form filler metal for a welding line, and is high in corrosion resistance, and physical and chemical performances of deposited metal are stable.

The invention discloses a rod bundle test piece for simulating a supercritical water-cooled reactor fuel element. The rod bundle test piece comprises a sealings insulation piece, a ceramic lining pipe and a heating pipe, wherein the heating pipe is electrified to be heated to simulate fission heat of the fuel element, so that the relevant thermotechnical-hydraulic characteristic research is carried out; the sealing insulation piece consists of a top high-pressure sealing flange, a sealing insulation pad, a middle stainless steel outer pipe and a bottom high-pressure sealing flange; the stainless steel pipe is welded with the flanges; the ceramic lining pipe is circular in outer part and square in inner part; four fillets are formed in an internal square structure; the middle part of the heating pipe consists of four stainless steel pipes; a stainless steel electrode and a copper electrode are respectively arranged on the top and at the bottom of the heating pipe and are communicated with an alternating current transformer to heat the heating pipe through alternating current; the heating pipe is inserted into the ceramic lining pipe; a clearance between the heating pipe and the ceramic lining pipe is a flowing channel; fluid flows in the channel to bring away heat of the heating pipe; the sealing insulation piece is arranged on the outer layer of the ceramic layer and serves as a pressure boundary, so that sealing and electric insulation effects under conditions of high temperature and high pressure are achieved.

The invention discloses a stainless steel welding rod used for 904 L steel welding. The stainless steel welding rod comprises a welding core and a titanium-calcium type coating covering the outside of the welding core. The welding core comprises, by weight, 0%-0.02% of C, 1.50%-2.50% of Mn, 0%-0.30% of Si, 24.0%-26.0% of Ni and the like. The coating comprises, by weight, 30%-45% of rutile powder, 8%-15% of marble powder, 3%-10% of fluorite powder, 8%-12% of feldspar, 9%-12% of mica, 1.5%-3% of titanium dioxide, 0.5%-1.5% of fluoroaluminate, 3%-5% of electrolytic manganese and the like. According to the stainless steel welding rod used for 904 L steel welding, the electric arc stability and the liquidity of a molten pool are good, and slag shells of molten slag are uniformly covered; deslagging is easy; a formed welding seam is flat, and the welding seam crack resistance is good; the purity of the chemical composition of postwelding deposited metal is high, and the performance is superior.

The invention discloses a flannel composite steel pipe and manufacturing method, which is characterized by the following: (1) the outer galvanizing steel pipe or inner liner film stainless steel pipe forms inner liner stainless steel composite steel pipe through diameter reducing or enlarging; (2) when the composite steel pipe and flannel adapt screw connection, the flannel lining part contains silicon gel sealing ring; when the pipe body tightens the flannel through screw, the pipe body end clings the silicon gel sealing ring; (3) the inner layer of inner lining stainless steel pipe is film wall stainless pipe, which is welded with flannel through stainless steel bar; when the composite steel pipe with flannel is assembled, the fluid in the pipe and stainless steel pipe and welding gap touch; (4) two ends of polythene plastics is closed through chuck in the heat air stove through grafting heat melting gel, which is blown into lining composite pipe; (5) the end part of lining composite pipe with flannel is blown into bellmouthing shape, whose end is blown to cling the flannel end face to form flannel end face plastic-covering layer; the inner pipe wall and flannel end form the integral plastic-covering layer.