45results about How to "High temperature and corrosion resistance" patented technology

The invention discloses an abrasion-proof and corrosion-resistant nickel-based alloy wire and a preparation method thereof. The alloy wire comprises the following components: 17-21% of C, 20-25% of Co, 1.8-2.2% of W, 6.4-9.5% of Mo, 1.4-1.8% of Al, 3.2-4.5% of Ti, 0.1-0.5% of Nb, 0.1-0.5% of Hf, 1.2-1.8% of Ta, 0.03-0.06% of Re, 0.01-0.05% of Ce, 0.02-0.1% of C, 0.005-0.015% of B, 0.02-0.07% of Zr, 0.005-0.008% of Mg, and the balance Ni. The preparation technology of the alloy comprises the steps of vacuum smelting, remelting, forging, hot rolling, drawing, solid solution treatment and aging treatment, namely, raw materials are prepared and smelted based on mass percent and then smelted; the smelted materials are forged and rolled into obtain alloyed wire rods; the alloyed wire rods are drawn at a plurality of times to obtain phi 0.05-0.4mm alloy wires; finally the alloy wires are subjected to solid solution treatment and aging treatment. The abrasion-proof and corrosion-resistant nickel-based alloy wire can be used as a brush wire material for brush sealing of an aircraft engine, a gas turbine, etc., thus the brush sealing effect can be effectively improved, and the service life can be prolonged.

The invention discloses a negative ion ceramic product, and a manufacturing method thereof, and belongs to the technical field of ceramic. The blank body raw materials of the negative ion ceramic product comprise, by mass, 30-40 parts of bone meal, 10-15 parts feldspar, 5-6 parts calcite, 20-30 parts kaolin, 10-15 parts clay, 3-5 parts water glass, 3-6 parts carbon fiber powder, 3-6 parts porous starch, 5-10 parts of tourmaline powder and 3-8 parts of Chongguang stone powder; a glaze raw material comprises following components, by mass, 10-20 parts agate stone, 10-50 parts feldspar, 5-10 partsquartz, 5-8 parts of sintered talc, 3-10 parts of zirconia, 5-15 parts of a fluxing agent, 3-8 parts of energy mineral powder, 5-10 parts of tourmaline powder and 2-5 parts of monazite powder. The negative ion ceramic product is excellent in negative ion release performance, flat in ceramic glaze surface, fine in texture, bright and smooth in glaze color, and high in strength and wear resistance.

The invention discloses a PFA fluorine color masterbatch and a production process thereof. The PFA fluorine color masterbatch produced by virtue of a formula and the production process has excellent corrosion resistance and electrical insulation performance and is relatively long in service life and low in cost. The PFA fluorine color masterbatch is produced from the following raw materials in percentage by weight: 65%-85% of PFA, 8%-25% of a high-temperature pigment, 3%-6% of a dispersing agent and 0.1%-2% of a machining aid. The invention also discloses the production process of the PFA fluorine color masterbatch, comprising the following steps: (1) burdening; (2) molding by extrusion; (3) cooling; (4) granulating; (5) dehydrating; (6) sorting; (7) drying; and (8) packaging and warehousing.

The invention discloses a preparation method of a superfine polytetrafluoroethylene fiber. The preparation method includes the concrete steps as follows: preparing spinning solution 1 by using polytetrafluoroethylene high-concentration emulsion and adding water for dilution; preparing spinning solution 2 by polyvinyl alcohol with alcoholysis of 70%-80%; dissolving sodium sulfate by warm water at the temperature of 40-50 DEG C to form supersaturated solution with crystals being separated out, and adding caustic soda to adjust the pH value to 12-14 so as to prepare supersaturated coagulating bath; spinning the spinning solution 1 and the spinning solution 2 by a special spinneret plate to form a nascent fiber with a 'sheath core' structure; and sintering and highly stretching the nascent fiber to prepare the superfine polytetrafluoroethylene fiber. In the invention, the superfine polytetrafluoroethylene fiber is produced by a unique spinning process, the operation is convenient, simple and feasible; and the comprehensive performance of the obtained superfine polytetrafluoroethylene fiber is good.

The invention provides ceramic paint. The ceramic paint comprises 1.0wt%-8.0wt% of organic binders, 5.0wt%-35.0wt% of inorganic binders, 10wt%-30wt% of packing, 1.5wt%-3.0wt% of auxiliaries and the balance water. The organic binders are made of ethyl alcohol, the inorganic binders are made of aluminum dihydrogen phosphate, boehmite, phosphoric acid and nitric acid, and the packing comprises rare-earth oxide and zirconia. The invention further provides application of the ceramic paint to industrial furnaces. The ceramic paint and the application have the advantages that mutual synergistic effects are realized by components in the ceramic paint, and accordingly the ceramic paint is excellent in comprehensive performance when used as a ceramic coating.

The invention discloses a pressure casting aluminum mold with a nanocrystalline composite coating and a preparing method. A mold body and a coating on the mold surface are included; the coating comprises a binding layer, a transition layer, a supporting layer, a hardness increasing layer and a temperature-resisting corrosion-resisting layer which are distributed from inside to outside and have hardness gradient, the binding layer is a pure Cr layer, the transition layer is a CrN layer, the supporting layer is a CrN and AlCrSiN composite coating, the hardness increasing layer is an AlCrSiN andAlCrSiON alternative layer, and the temperature-resisting corrosion-resisting layer is an AlCrSiON and AlCrSiO alternative layer. The coating is a combination of multiple kinds of nanocrystalline complex nitride and oxide coating materials, the component has the gradual change characteristic, inner stress of the coating is reduced, coating toughness is improved, the defect that an existing pressure casting aluminum mold is insufficient in wear resistance, temperature resistance and corrosion resistance can be well overcome, the service life of the pressure casting aluminum mold can be greatlyprolonged, and adaptation of the pressure casting aluminum alloy can be greatly improved.

The invention discloses a soldering flux spraying system for wave soldering, which comprises a spraying unit (1). The system is characterized in that a power unit (2) is arranged on the outer side ofthe spraying unit, one end of the power unit is provided with a fixed guide rail (3), a slide block (4) of the fixed spraying unit (1) is arranged on the fixed guide rail (3), and the power unit and the block connected with a driving block slide along the fixed guide rail. The sliding of the spraying unit is realized by the arrangement of the fixed guide rail and the slide block of the fixed spraying unit, so the device has the advantages of small vibration and noise and stable operation in use; and the device has multiple types of sprayers with different diameters so as to realize the regulation on multiple flow rates, so that the atomization effect is more even.

The invention discloses a sapphire tube black body cavity optical fiber temperature measurement device, wherein an optical system comprises a sapphire tube black body cavity, a lens assembly shot anda Y-shaped energy transfer optical fiber; a circuit system comprises a photoelectric detector, a signal processing module and a display module; the sapphire tube black body cavity is formed by coatinga film inside the sealed end of a sapphire tube; the sapphire tube black body cavity, as a sensing part, is in contact with a to-be-measured environment, and converges thermal radiation energy at anenvironment temperature to the Y-shaped energy transfer optical fiber through the lens assembly shot; the Y-shaped energy transfer optical fiber divides thermal radiation energy into two paths of energy beams; the photoelectric detector converts two paths of energy beams into electric signals and transmits the electric signals to the signal processing module to carry out signal processing so as toobtain a digital signal; and the display module obtains a to-be-measured temperature value according to the digital signal and carries out display. According to the invention, the black body cavity and the lens assembly shot are combined so as to avoid continuous exposure of the optical system in a severe environment; and the sapphire tube black body cavity optical fiber temperature measurement device is applicable to the field of high-temperature industries with the long-time temperature measurement requirement.

The invention discloses an ETFE fluorine masterbatch and a production flow thereof. The ETFE fluorine masterbatch prepared by the formula and the production flow has the advantages of relatively good corrosion resistance and electric insulation property, relatively long service life, and low price. The ETFE fluorine masterbatch disclosed by the invention is prepared from the following raw materials in percentage by weight: 65%-85% of ETFE, 8%-25% of a high-temperature pigment, 3%-6% of a dispersing agent and 0.1%-1.5% of a processing agent. The invention further discloses a processing technology for preparing the ETFE fluorine masterbatch. The technology comprises the following steps: (1) burdening; (2) extruding and molding; (3) cooling; (4) dicing; (5) dewatering; (6) sorting; (7) drying; and (8) packaging and warehousing.

The invention discloses a low-density ceramsite propping agent made from flint clay clinker and dolomite and a preparation method of the low-density ceramsite propping agent, and belongs to the technical field of propping agents for hydrofracture construction and exploitation of oil and gas fields, solving the problems of product performance instability and incapability of mass production due to uneven blending and abnormal growth of crystalline grains during sintering in the prior art. The ceramsite propping agent is prepared through raw material ball-milling, pelleting, drying, sintering and sieving, and comprises, by mass, 86-98% of the flint clay clinker and 2-14% of the dolomite, wherein the total quantity of the flint clay clinker and the dolomite is 100%. The prepared ceramsite propping agent has the advantages of high uniformity of prepared ceramsites, high compressive strength, stable performance, low volume density, low apparent density, high anti-crushing capability, high surface smoothness and the like, has excellent performance such as high temperature resistance and corrosion resistance, and can be applied to high-temperature and high-corrosion underground environments for a long time, and performance of the low-density ceramsite propping agent meets technical standards of SY/T5108-2014.

The invention relates to a high-temperature storage tank body structure. The storage tank body structure comprises a storage tank base material, a middle high-temperature-resistant material and a liner layer, wherein the storage tank base material is made of carbon steel, the middle high-temperature-resistant material is a layer of insulation refractory bricks, and the liner layer is a stainless steel liner protecting the refractory bricks. The high-temperature storage tank body structure can effectively isolate the storage tank base material from making contact with high-temperature liquid, greatly reduces amount of expensive stainless steel, meanwhile, meets the requirements for high temperature resistance and corrosion resistance and greatly reduces equipment investment.

The invention provides a bright red glaze. The glaze comprises the following raw materials: feldspar, clay, high-boron frit, Mg-Al hydrotalcite, kojic acid dipalmitate, nano zinc oxide, nano copper oxide, manganese carbonate and aluminum hydroxide. A preparation method of the above bright red glaze comprises the following steps: putting the raw materials into a glaze mill according to a ratio, performing grinding, and performing filtering through a 120-140-mesh sieve to obtain a mixed base material; and putting the mixed base material into a glaze mill, performing grinding at 45 r/min for 4-8h, and performing filtering through a 120-140-mesh sieve to obtain the bright red glaze. The bright red glaze prepared by adopting the raw material ratio and the preparation method provided by the present application has a bright and stable color, good gloss, fine texture and good adhesion, a glaze layer prepared by adopting the above glaze has very strong adhesion, and a fired ceramic has a smooth glaze surface, fine texture and a bright and smooth glaze color, and has stronger strength, wear resistance, thermal stability and high-temperature resistance.

The invention relates to an umbrella-shaped gas collecting structure. The umbrella-shaped gas collecting structure comprises an upper-section tubular structure and a lower-section umbrella-shaped structure, wherein the upper-section tubular structure consists of a first section, an intermediate section and a tail section which are sequentially connected from top to bottom; the first section is hung on a deep coal box; the first section, the intermediate section and the tail section are connected by a clamping groove quick coupling; the tail section is connected with a lifting hook at the upper part of the lower-section umbrella-shaped structure through a lifting lug; the lower-section umbrella-shaped structure consists of multiple sections of gas collecting umbrellas; a plurality of umbrella skirts expanding towards the lateral lower direction are arranged on each section of gas collecting umbrella along the axial direction; annular clearances are formed between the umbrella skirts and the corresponding gas collecting umbrella main body; the gas collecting umbrellas of all sections are connected by the lifting lugs and the lifting hooks. According to the umbrella-shaped gas collecting structure disclosed by the invention, the structure is reasonable, the conduction area of gas is large, raw coal gas generated by a dry distillation section can be timely exported, and pulverized coal can be prevented from entering into a gas collecting channel; the umbrella-shaped gas collecting structure is of a multi-segment and multi-section structure, is quick and reliable in connection and is very convenient in manufacturing, mounting and replacing; in addition, the umbrella-shaped gas collecting structure also has the characteristics of high temperature resistance and corrosion resistance, and sufficiently meets the demand of exporting of the raw coal gas.

The invention provides a shear thickening fluid protective armor device wrapped with high-performance fiber cloth. The shear thickening fluid protective armor device wrapped with the high-performance fiber cloth comprises the outer high-performance fiber cloth layer and the inner high-performance fiber cloth layer. The outer high-performance fiber cloth layer and the inner high-performance fiber cloth layer are processed into a row of continuous structures with semi-columnar spaces through allocation. Semi-columnar plastic containers filled with shear thickening fluid are arranged in the semi-columnar spaces. Compared with the mode of increasing the thickness of the section of a building body structure, the shear thickening fluid protective armor device wrapped with the high-performance fiber cloth has a better effect in preventing impact of flying matter, and is free of modifying layout of the body structure too much.