97 results about "Corrosion resistant" patented technology

In accordance with at least selected embodiments of the present invention, an improved liquid degassing membrane contactor or module includes a high pressure housing and at least one degassing cartridge therein. It may be preferred that the high pressure housing is a standard, ASME certified, reverse osmosis (RO) or water purification pressure housing or vessel (made of, for example, polypropylene, polycarbonate, stainless steel, corrosion resistant filament wound fiberglass reinforced epoxy tubing, with pressure ratings of, for example, 150, 250, 300, 400, or 600 psi, and with, for example 4 or 6 ports, and an end cap at each end) and that the degassing cartridge is a self-contained, hollow-fiber membrane cartridge adapted to fit in the RO high pressure housing.

The invention discloses a rare earth aluminum alloy wire for thermal spraying, which belongs to the technical field of thermal spraying. The wire contains aluminum, zinc, magnesium and the like, and also contains two or more than two rare earth metal elements, and the total weight of rare earth metal elements accounts for 0.51-5.00% of the total weight of the wire. The invention has the advantages that the processing and manufacturing process is convenient and the product coat cost is moderate; and the metal thermal spraying coating made from the wire has good adhering capability, good physical and mechanical property, good corrosion-resistant property, and moderate construction cost, and is favorable for popularization and application.

The invention discloses a manufacture technology of a bimetal composite pipe, which comprises the following steps of: 1) smelting structure layer carbon steel liquid according to a smelting technology of a carbon steel oxidizing method, and smelting a base body structure high-chromium iron liquid according to a smelting technology of an alloy non-oxidizing method; 2) forming by means of centrifugal pouring, wherein a centrifugal metal molding paint can adopt resin-coated sand or water base zircon powder paint; 3) injecting the carbon steel liquid into a mould; 4) pouring the high-chromium iron liquid when the temperature of the surface of the carbon steel liquid reaches the semi-solidification status, forming a transition layer between two alloys, and mutually melding to form into an integrated casting piece; and 5) immediately putting the casting part into a heat preserving furnace or embedding into the sand after the casting part is demoulded to gradually reduce the temperature. By adopting the technology, the manufacture technology adopts the metallurgical combination without a gape between the carbon steel and the high-chromium iron, leads the composite pipe to have high use security, and has high wear-resistant and corrosion-resistant capability, thereby prolonging the service life of the composite pipe.

The invention discloses totally synthetic non-staining bearing oil. The bearing oil comprises, by weight, 41-90% of synthetic lubricating oil, 2-20% of synthetic ester, 0.1-10% of an extreme pressure anti-wear additive, 0.1-10% of a purification dispersant, 0.1-10% of an antirust corrosion-resistant additive, 0.1-5% of an antioxidant, 0.01-0.1% of a demulsifying agent, 0.1-3% of a viscosity index improver and 0.01-1% of an antifoaming agent. The totally synthetic non-staining bearing oil has the advantages of being high in operating viscosity index, superior in lubricating property, high in high-temperature oxidation stability, wide in operating temperature range, superior in annealing detergence, particularly suitable for protection of lubricating, cooling, rust prevention and oil seal for bearing systems of steel rolling mills and non-ferrous metal rolling mills, and the like; and problems of insufficient lubricating property, poor oxidation stability, particularly poor surface quality of rolled workpieces due to oil dirt and stains during rolling processes in a mechanical drive process can be effectively solved, and the processing efficiency, the processing quality and the service life of devices can be greatly improved.

A mineral methane gas drainage pipe comprises a pipe body, wherein two ends of the pipe body are welded with flanges or fast joints, and the pipe body is formed by welding a carbon structural steel cold rolled steel strip, a stainless steel strip and a stainless steel composite steel strip in spiral winding mode. For every two adjacent steel strips, one steel strip is subjected to flanging, the steel strip and the other steel strip are subjected to flanging overlapping, and simultaneously a unique reinforced vault rib structure is formed through spiral winding welding. Whether to coat materials not generating gases hurting human bodies and having a good flame retardant effect on an inner layer and an outer layer of a main body is determined according to difference in materials, and the pipe body is led to be corrosion resistant, antistatic and long in service life. The pipe body is light in weight due to the fact that the pipe body is formed by welding the steel strips in spiral winding mode, and the self-designed fast joints lead the pipe body to have good sealing performance and high pressure loading capacity.

The invention relates to a method for manufacturing a cutting line of an electrical discharge machine. The method mainly comprises the following steps that: two or more different metal alloys are combined to generate metal alloys with different phases by means of staged heat treatment; and fractured coating between different metals is generated after coating combination and cold drawing by means of different physical properties between the alloys so as to form the cutting line of the electrical discharge machine which can resist corrosion and has more effective cutting and further reduce production cost to form the more effective cutting line of the electrical discharge machine.

The invention discloses a high-surface-quality hot-galvanized transformation induced plasticity (TRIP) steel plate and a manufacturing method thereof. The hot-galvanized TRIP steel plate is prepared from chemical components in percentage by weight as follows: 0.10%-0.15% of C, 1.20%-1.80% of Mn, less than or equal to 0.030% of P, less than or equal to 0.030% of S, 1.20%-2.40% of Als and the balance of Fe and inevitable impurities. The manufacturing method of the TRIP steel plate comprises the steps as follows: continuous casting steelmaking-hot rolling-cold rolling-continuous annealing and hot galvanizing. The structure form of the hot-galvanized TRIP steel plate prepared with the method includes ferrite, bainite, retained austenite and martensite, the grain size grade ranges from Grade 10.5 to Grade 11, the tensile strength ranges from 640 MPa to 670 MPa, the yield strength ranges from 395 MPa to 465 MPa, the ductility is higher than or equal to 30%, the strength and ductility product can be 23GPa% or above, and the plate has the high surface quality, mechanical performance and corrosion resistance.

The invention discloses an elevator car. The elevator car comprises a car body, handrails, a mirror-like stainless steel plate and a tempered glass window; the handrails are arranged at the bottom of the car body, the handrails are fixedly connected with the car body, the mirror-like stainless steel plate is arranged on the side face of the car body, the tempered glass window is arranged on the top of the car body, protrusions are arranged on the two sides of the tempered glass window, the tempered glass window is connected with the car body through the protrusions in a clamped mode, LED lamp beads are installed at the bottom of the tempered glass window, a buffer layer is installed at the bottom of the car body, and a tetrafluoroethylene layer is arranged on the outer side of the car body. The elevator car is corrosion resistant in structure, long in service life and high in safety property.

The invention discloses a carbon-graphite keeper rolling bearing used for performing protection and antifriction treatment and a manufacturing method of the carbon-graphite keeper rolling bearing used for performing the protection and the antifriction treatment. The carbon-graphite keeper rolling bearing used for performing the protection and the antifriction treatment comprises a bearing outer ring, a bearing inner ring, a rolling body embedded between an outer ring roller path and an inner ring roller path and a carbon-graphite keeper separating the rolling body in the peripheral direction. According to the invention, the carbon-graphite keeper rolling bearing performs surface treatment with the protection and the antifriction as the main purposes on the steel bearing outer ring, the steel bearing inner ring and the rolling body to form a protective antifriction layer on the surface, so that the corrosion resistant property of the steel parts under an oilless state is promoted, and the lubricating capability of the steel parts is improved; during the initial operation of the bearing and before a carbon-graphite transfer lubricant film is fully formed inside the bearing, the work surfaces of the steel parts cannot suffers corrosion due to poor lubrication under the protection of the protective antifriction layer, so that the operating reliability and the service life of the carbon-graphite keeper rolling bearing are greatly improved, therefore, the carbon-graphite keeper rolling bearing has important engineering application value.

Provided is a shield used for container sterilization equipment that inserts, from the mouth of a container (B), an irradiation nozzle (En) having an exit window (Ew) on the distal end of the irradiation nozzle (En) and sterilizes the inner surface of the container (B), the irradiation nozzle (En) being surrounded by composite shields (Wi, Wo). A composite shield block (21) forming the composite shields (Wi, Wo) includes a magnetic shield (24) and an X-ray shield (25) that are disposed in the hollow section of a board-shaped shell (22) made of a corrosion resistant material, and an insulating layer (26) that is interposed between one surface of the board-shaped shell (22) and the magnetic shield (24), between the magnetic shield (24) and the X-ray shield (25), and between the X-ray shield (25) and one surface of the board-shaped shell (22).

The invention relates to a nickel-chromium-molybdenum-niobium corrosion resistant welded alloy, which is composed of the following components in percentage by weight: 21 to 23% of Cr, 8.5 to 10% of Mo, 3.2 to 4.0% of Nb, 0.1 to 0.3% of Ti, 0.1 to 0.3% of Al, 0.04 to 0.06% of Y, and the balance being Ni. A certain amount of titanium and aluminum is added so as to strengthen the deoxidation effect of the alloy steel and reduce the gas content (H, O, and N) of the alloy steel. Metal yttrium is added to improve the rolling plasticity of the alloy steel, moreover the post processing and forging of alloy steel become easier, and the mechanical performance of the deposited metal, which is generated during the welding process, is improved. The added niobium and molybdenum both strengthen the alloy. The alloy has an excellent pitting corrosion and gap corrosion resistant performance, an excellent high-temperature and ultralow-temperature mechanical performance, and good anti-corrosion performance under severe environment. The alloy is widely used in industries such as chemical engineering, aviation, marine engineering, pollution control box of nuclear reaction equipment, and the like, is mainly used for welding of abnormal shaped steel and nickel based alloy, and can be also used for steel and surface built-up welding.

The invention discloses a preparation method for tungsten-nickel alloy with an abrasion-resistant and corrosion-resistant coating. According to the tungsten-nickel alloy prepared through the method, the problem of 'nickel pools' and holes frequently occurring in a traditional preparation process of fine-grain cemented carbide is solved, and the comprehensive performance of the alloy is improved. A multi-gradient coating structure is adopted, the components of the coating transit from Cr and CrN to CrAlSiN gradually, the coating grain size and residual stress in crystal lattices are reduced, the deposition thickness of a film is improved, and therefore the bearing capacity and abrasion resistance of the coating are greatly improved.

A device for cooling hot gases (quencher) with the formation of a corrosive condensation product, which device has a pressure-resistant container and at least one corrosion-resistant internal gas guide pipe, and to a method of cooling gases that form corrosive condensation products, which method uses the mentioned device.

The present invention provides improved gas service riser assemblies. The improved gas service riser assemblies utilize an adapter to provide the transition from the plastic pipe used for underground distribution of natural gas to the metal pipe used in above ground natural gas distribution systems. Further, the improved gas service riser assemblies do not utilize the protective metal casing as a conduit for the natural gas thereby reducing the hazards associated with corrosion of the protective metal casing.

The method for surface treatment of coal mine machinery parts belongs to metal surface treatment technology, and in particular relates to a method for surface treatment of coal mine machinery parts; the technical problem to be solved is to provide a method that can improve hardness, corrosion resistance, low cost, and is environmentally friendly The most harmful method for surface treatment of large coal mine machinery parts; the technical scheme adopted is: the workpiece to be processed is preheated in the first step, nitrided in the second step, oxidized in the third step, and cooled in the fourth step to obtain Salt bath treatment workpiece; the surface corrosion resistance of the workpiece treated by the present invention is more than 5 times higher than that of chrome plating and nickel plating, more than 10 times higher than that of galvanizing, more than 20 times higher than that of bluing treatment, and the surface hardness is above 50HRC, which is much higher than Chrome plating, nickel plating, and bluing treatment have surface hardness. At the same time, the surface treatment method has low cost and is environmentally friendly, and can be widely used in the surface treatment of large-volume coal mine machinery parts.

The invention discloses a corrosion-resistant carbon fiber resin-based composite material used for a pump. The corrosion-resistant carbon fiber resin-based composite material comprises, by weight, 12-30 parts of ultra-high molecular weight polyethylene resin, 10-20 parts of phenolic epoxy resin, 5-8 parts of fluorocarbon resin, 3-8 parts of carbon fibers, 0.5-1.5 parts of 1,6-hexanediol, 0.1-0.5 part of nano titania, 0.1-0.5 part of nano silica and 5-10 parts of auxiliaries. The provided corrosion-resistant carbon fiber resin-based composite material used for the pump is good in mechanical property, high in specific strength, large in specific modulus and good in fatigue resistance and impact resistance; a product prepared through the composite material is easy to process and form, good in product quality and long in service life; and the composite material is simple in preparation method, low in production cost and worthy of popularizing.

The invention relates to a plating layer for an electrochemistry corrosion resistant electronic encapsulation shell, which comprises the following step: sequentially plating an inert metal-plating layer, a ferronickel-plating layer, a nickel-plating layer and a gold-plating layer on a surface layer of a shell matrix and a surface layer of a lead from the inner part to the outer part, wherein the ferric content of the ferronickel-plating layer is from 15 to 65 percent by weight. The invention can prevent and retard the electrochemistry corrosion of the electronic encapsulation shell.

The invention discloses anti-corrosion and anti-wear high manganese steel and a preparation method thereof. The high manganese steel consists of the following components in percentage by weight: 1.0-1.2% of carbon, 14-15% of manganese, 0.48-0.6% of silicon, 10.5-12.5% of chromium, 0.5-0.6% of molybdenum, 0.3-0.5% of nickel, 0.1-0.3% of aluminum, 0.08-0.12% of copper, 0.01-0.02% of nitrogen, 0.01-0.03% of rare earth element, less than or equal to 0.03% of phosphorus, less than or equal to 0.03% of sulfur and the balance of iron. The preparation method comprises: (1) smelting: adding alloy and metal raw materials including technically pure iron, nitrided ferrovanadium, ferromanganese, technically pure aluminum and the like into an electric furnace, heating to melt all the alloy and metal raw materials, maintaining for 30 minutes at the temperature of 1,730-1,750DEG C, and discharging at the temperature of 1,460-1,500 DEG C; (2) casting; (3) heat treatment after casting; and (4) product acceptance. The anti-corrosion and anti-wear high manganese steel has the advantages of good anti-corrosion property, good anti-wear property, good impact toughness, long service life and short production period.

A coaxial all-metal cam stator and rotor underground dynamical drilling tool comprises a transition joint, the transition joint is connected with a motor assembly through threads, and the motor assembly is connected with a transmission shaft assembly through threads. After being filtered through a filtering device, drilling liquid passes through the transition joint, enters an annular space between a motor base shell of an upper motor and a stator shell after passing through an upper end cover, enters a center hole of an upper rotor after acting on the upper rotor, is discharged towards a lower motor through inclined holes in the center hole of the upper rotor and continuously drives the lower motor to rotate, a part of the liquid acted by the lower motor flows out through small holes formed in a transmission shaft joint to lubricate and cool a bearing and most of the drilling liquid is sprayed out through an inner hole of a spindle of the transmission shaft and drill water holes so as to cool and clean a drill and circulate slurry. The coaxial all-metal cam stator and rotor underground dynamical drilling tool has the advantages of being resistant to abrasion, resistant to corrosion, resistant to high temperature, resistant to aging, long in service life, simple in structure and easy to machine.

The invention discloses a full-inorganic interior and exterior wall coating and a preparation method thereof in the technical field of inorganic coatings. The full-inorganic interior and exterior wallcoating comprises the following raw materials by weight: 20-30 parts of a potassium silicate solution, 10-25 parts of silica sol, 30-40 parts of calcium carbonate, 15-25 parts of a barium chloride solution, 10-15 parts of a sodium phosphate solution, 10-15 parts of pigment, 5-8 parts of an assistant, 25-30 parts of deionized water and 1-2 parts of a thickening agent. The silica sol is added intothe potassium silicate solution, nano titanium dioxide particles in the silica sol are uniformly dispersed in the potassium silicate solution, the nano titanium dioxide itself has excellent corrosionresistance and high hardness, and the coating contains the nano titanium dioxide, so that the corrosion resistance and strength of the coating are improved; the barium chloride solution is added intoa suspension of calcium carbonate and sodium phosphate, the sodium phosphate and barium chloride react to generate barium phosphate precipitate, the barium phosphate precipitate coats the outer surfaces of calcium carbonate particles, dissolution of calcium carbonate is inhibited, and the corrosion resistance of the coating is greatly improved.

The invention discloses a high-temperature-resistant and corrosion-resistant waterproof board for tunnels and a production process of the high-temperature-resistant and corrosion-resistant waterproof board, and relates to the technical field of waterproof materials. The high-temperature-resistant and corrosion-resistant waterproof board adopts high-density polyethylene (HDPE) as main raw materials, adopts polypropylene random copolymer (PPR) and carbon black containing antioxidant as auxiliary materials, and is of a combined structure with an upper layer and a lower layer, the upper layer adopts the HDPE, the PPR and the carbon black containing the antioxidant, the lower layer adopts the HDPE, the PPR and the carbon black, and the waterproof board is manufactured through processes of parallel material-mixing extrusion, double-flow flat die co-extrusion and three-roller press polish in an attaching mode. The corrosion-resistant performance, the high-temperature-resistant performance and the ageing-resistant performance of the waterproof board are effectively improved, and therefore the waterproof board is suitable for the environment of the tunnels with high ground temperature. The waterproof board is of the combined structure with the upper layer and the lower layer, when the waterproof board is laid on site, the upper layer is tightly attached to hole walls and the lower layer faces outwards, and therefore convenience is brought to construction of the tunnels and other waterproof underground engineering.

The invention relates to the modification of cast stone. The cast stone is modified and prepared into a wear-resistant composite microcrystalline sheet material by the addition of some raw materials. The wear-resistant composite microcrystalline sheet material is concretely prepared by the following steps of: uniformly mixing natural basalt, quartz sand, feldspar, changbaiite, boron nitride and molybdenum disulfide according to a certain weight ratio, heating the mixture into a crystallization tank furnace for crystallization, fully melting, followed by water quenching to prepare crystallized pellet diet; placing the pellet diet into a thermal furnace for heating, softening, melting, laying flat to obtain a smooth and flattening sheet material, preparing into a polycrystalline sintered body with a hard microscopic structure, cooling by annealing, grinding, polishing, and cutting into the required specification. The invention relates to a high-strength, high wear-resistant and corrosion-resistant protective material. Due to the adoption of natural inorganic materials, the novel green environmental-protection wear-resistant composite microcrystalline sheet material, which is prepared by two-time high-temperature sintering, is characterized in that its wear resistance can be more than ten times than that of common carbon steel, the microcrystalline sheet material has strong wear-resistant performance; and its use cost is low.

The invention discloses corrosion-resistant thermal insulation mortar which is characterized by being prepared from the following raw materials in parts by weight: 320-380 parts of cement, 200-250 parts of kaolin, 220-260 parts of waste incinerator slag, 100-140 parts of quick lime, 210-260 parts of waste glass slag, 140-190 parts of coarse sand, 7-9 parts of glass fiber, 9-12 parts of 0.5-5mm wood fiber, 60-90 parts of wood saw powder, 60-80 parts of tobacco straw, 3-7 parts of polyvinyl acetal and 4-6 parts of auxiliaries. The thermal insulation mortar prepared by the invention is low in heat conductivity coefficient, stable in thermal insulation property, high in compressive strength, corrosion-resistant, anti-aging and suitable for thermal insulation of various walls.

The invention relates to a plate material for an inner container of a refrigerator and a preparation method thereof. The plate material for the inner container of the refrigerator is prepared from the following components in parts by weight: 100 parts of polyester material, 0.1 to 5 parts of titanium dioxide, 0.05 to 2 parts of lubricant, and 0.05 to 2 parts of antioxidant. The plate material has the advantages that the luster degree is higher, the multi-component foaming agent corrosion-resistant property is excellent, and the food safety is higher; because the plate material is the polyester material which belongs to the polarity material, the good adhering ability between the inner container of the refrigerator and the polyurethane foaming layer is good, the corona technology is not needed, and the difficulty in production technology is decreased.