47results about How to "Both corrosion resistance" patented technology

The invention discloses a temperature-resistant, corrosion-resistant and high-adhesion adhesive and a preparation method thereof, and belongs to the technical field of adhesives. The temperature-resistant, corrosion-resistant and high-adhesion adhesive consists of two components, i. e., an adhesive A and an adhesive B, in the weight ratio of 100:1-10, wherein the adhesive A consists of chemical plasticizing vinyl ester resin, a polymerization inhibitor, a low shrinkage agent, a free radical curing solvent, gas-phase silicon dioxide, inorganic filler, a coupling agent, a defoaming agent, color paste or paint, a promoter and a promotion additive; and the adhesive B consists of phthalic ester, peroxide and inertial powder filler. The adhesive provided by the invention has the performance of heat resistance, corrosion resistance, penetration resistance, adhesion, positioning, impact resistance and the like, can be formed into different types at normal temperature, and medium and high temperature, is easy and convenient to operate, can bring the unique advantage of the adhesive into full play on some occasions requiring to paying attention to corrosion resistance, adhesion, heat resistance and the like, and is suitable for mutual adhesion among a continuous cellulose material, a concrete material, a metal material, stone, FRP (Fiber Reinforce Plastic), thermoplastic plastic and the like.

The invention relates to the technical field of metal casting materials, and concretely relates to boric low alloy wear resistant steel for a pump. The steel is characterized in that the steel comprises the following chemical components: 0.33 wt% of C, 1.20 wt% of Mn, 1.30 wt% of Si, 1.35 wt% of Cr, 0.30 wt% of Mo, 0.40 wt% of Ni, 0.05 wt% of N, 0.002-0.0025 wt% of B, 0.002-0.003 wt% of Y, and the balance Fe and avoidless impurities. The boric low alloy wear resistant steel for the pump, which has the characteristics of high strength and hardness, and excellent tissue and performance, is obtained through molding a boric low alloy wear resistant steel casting with resin sand, and carrying out heat treatment consisting of quenching and tempering on the casting. The boric low alloy wear resistant steel of the invention has the advantages of high hardness, good toughness effect, high wear resistance, certain corrosion resistance, simple production technology, low production cost and the like.

The present invention is one kind of composite (titanium carbide+chromium carbid)/ferroalloy coating and its reaction coating process, and belongs to the field of composite ceramic/metal coating. Industry Ti-Fe powder, Cr-Fe powder, B-Fe powder, Fe powder, etc. as main material, alcohol and organic adhesive are mixed to form slurry; the slurry is sprayed or painted onto the surface of base body; and through in-situ reaction and alloying under vacuum condition and at certain temperature, composite coating with hard phase of titanium carbide and chromium carbide and base phase of ferroalloy is formed after lowering the temperature. The present invention has low cost of forming the composite coating, and the composite coating has high heat resistance, high oxidation resistance, high corrosion resistance, high antiwear, etc. and may be used widely in metallurgy, thermal power generation and other fields.

The invention relates to a method for producing an ceramic-lined aluminum alloy pipe, comprising the following steps: producing a ceramic-lined steel pipe by adopting the SHS centrifugal process, casting paraffin inside the ceramic-lined steel pipe, fixing the ceramic-lined steel pipe on a turning lathe, turning the outer surface of the ceramic-lined steel pipe, heating an aluminum alloy pipe to make the aluminum alloy pipe expand, extruding the turned ceramic-lined steel pipe into the aluminum alloy pipe at high temperature, and heating the paraffin wholly to obtain the ceramic-lined aluminum alloy pipe. The SHS centrifugal process, the lathe processing process and the sleeving process are used to indirectly product the ceramic lining inside the aluminum alloy composite pipe. The method is simple and adopts the cheap raw materials. The ceramic-lined aluminum alloy pipe has the abrasion resistance and corrosion resistance of the ceramic-lined pipe, and the weight of the composite pipe is reduced greatly.

The invention discloses a pelleting extruder for FEP powder, which comprises two parallel screws, a machine barrel which is arranged outside the screws, a heating system, a cooling system and a vacuumizing and de-volatilizing system, wherein a fluorine gas charging port is formed on the machine barrel. The invention aims to provide the dual-screw extruder for the FEP powders, which can shorten anFEP production and processing flow, simply and efficiently remove unstable end groups in products, control volatile matters of the products and has the advantages of high-temperature resistance, corrosion resistance and long service period. The double-screw extruder of the invention can efficiently remove the unstable end groups in molecular links and control the volatile matters of the products;and meanwhile, the machine barrel has corrosion resistance and high-temperature formation resistance and is very suitable for processing the FEP powder.

The invention belongs to the technical field of coatings and in particular relates to an epoxy resin-nano titanium interface chemical bonding anticorrosive coating and a preparation method thereof. Firstly, a nano titanium filler grafted with epoxy resin is easily fully dissolved and wetted with coating resin, and the nano titanium filler can be uniformly dispersed in the epoxy resin of the coating and can be cross-linked with the coating resin and a curing agent together, so that the epoxy resin-nano titanium interface chemical bonding anticorrosive coating is obtained; and secondly, the metal titanium particle size of the grafted epoxy resin is in a nano scale, the grafted epoxy resin has a huge specific surface area and a good surface nano effect and can form firm interface bonding force with resin in the coating, the defects and pores of the anticorrosive coating are greatly eliminated, the phenomena such as embrittlement cracking and underfilm corrosion occurring on the anticorrosive coating are avoided, and the corrosion resistance of the coating is improved. Finally, the nano titanium filler is wear-resistant, high in strength and high in thermal stability, so that the wear resistance, mechanical properties and heat resistance of the anticorrosive coating are obviously improved.

The invention provides an ultrasonic frequency induction heating technology based quick hot-dipping aluminizing technology. The technology comprises the following steps: oil removing, acid pickling for rust removal, washing, surface activation, auxiliary infiltration, drying, and ultrasonic frequency induction heating technology based quick aluminizing. The technology has the following advantages: concentration and consumption of a pickling solution are reduced, and a rust removal speed is greatly increased; the hot-dipping aluminizing temperature is low, and the aluminizing process is short; compared with a heating method of a traditional resistance aluminizing furnace, the induction heating method adopted enables the utilization rate of electrical energy to be improved over 20%, and enables the annual output to be increased over one time; compared with traditional diffuse type aluminizing steel material, the new aluminizing steel material prepared with the technology retains a pure aluminium layer and an iron-aluminium alloy layer under a columnar eutectic state, and has the effects of corrosion resistance, heat resistance, abrasion resistance and photo-thermal reflectivity; a fragility area on the surface is eliminated; bending performance and punch forming performance are greatly improved; resistance to heat shocks and resistance to thermal fatigue are improved over 10%.

The invention discloses a rare earth oxide doped high temperature oxidation resisting and abrasion resisting coating for H13 steel surface protecting and a preparation method of the coating. Accordingto the method, an active combustion-high velocity air fuel (AC-HVAF) technology is adopted for spraying powder on a base body (H13 steel) to form the composite coating; and the powder comprises Cr3C2-NiCr powder and nanometer CeO2 powder, the doping content of the nanometer CeO2 powder is 2-8 wt%, and the balance is the Cr3C2-NiCr powder. The coating prepared through the method is compact in structure and uniform in distribution, a flattened structure is achieved, and the coating is closely combined with a boundary. Besides, after doping of the nanometer CeO2 powder, the tissue compactness ofthe coating is further improved, the porosity is reduced, the defects of non-molten matter, micro cracks and the like are less, better high temperature oxidation resisting performance and abrasion resisting performance are both achieved, and the high temperature oxidation resisting performance and the abrasion resisting performance of the H13 steel in the using process can be improved easily.

The invention relates to the technical field of breeding, in particular to a steel-plastic support for a breeding net cage. The support comprises a metal frame and a plastic surface layer, the metal frame comprises two floating pipe fixing rings arranged in parallel, a steel plate is welded between the two floating pipe fixing rings, a steel ring with a hole is arranged in the center of the steelplate, the plastic surface layer wraps the metal frame, and the support is formed through integrated injection molding. The support adopts a steel-plastic integration structure, corrosion resistance and high strength of plastic are both achieved, mainstream plastic supports and few metal supports formed through a casting technology in the market are overturned thoroughly, the net cage can adapt tosevere environments such as violent typhoon, and better breeding net cage equipment is provided for farmers.

The invention discloses an aluminum alloy brazing filler metal constituted by Si in a range from 4.0 to 13.0wt%, Sr 0.001 to 0.050wt%, P 0.0001 to 0.0090 wt%, and other aluminum alloy formed by A1 and other inevitable foreign matters and a brazing plate using the same. The aluminum alloy brazing filler metal has advantages of excellent, strength, hard-solder performance, and anti-corrosion performance.

The invention discloses iron-based alloy powder for laser cladding and a preparation method thereof. The powder comprises the following elements in percentage by weight: 0.05-0.2% of C, 10.6-15.6% of Cr, 1.5-2.5% of Ni, 10.5-15.4% of Mo, 0.4-0.6% of Mn, 0.9-1.2% of B, 0.8-1.0% of Si, 2.9-4.2% of V, and the balance of Fe and inevitable impurities. The preparation method comprises the steps of raw material weighing, smelting, steel casting, inert gas shielding atomization, airflow classification, screening and the like. The alloy powder prepared through the preparation method has excellent hardness, crack resistance and corrosion resistance.

The invention discloses an electronic electro-conductive paint and a preparation method thereof, and belongs to the technical field of paints. The paint comprises the following components in parts by weight: 35 to 50 parts of phenolic resin, 5 to 10 parts of polyaniline, 3 to 7 parts of electro-conductive graphite powder, 5 to 10 parts of polypyrrole, 2 to 5 parts of lanthanum trichloride, 2 to 5 parts of nano aluminum powder, 5 to 12 parts of 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate, and 15 to 32 parts of xylene. The preparation method comprises the following steps: (1) precisely weighing the raw materials; (2) evenly grinding the raw materials in a ball mill to obtain mixed powder; (3) placing the powder in a static mixer and evenly mixing to obtain premix; (4) allowing the premix to stand still for 24 to 48 hours in a room to obtain the electronic electro-conductive paint. The provided electronic electro-conductive paint has a good electro-conductive performance and a good film-forming effect, also has certain corrosion resistant, high temperature resistant, and weatherability performances, and is capable of preventing electronic elements from being corroded in a long time.

The invention discloses a low-nickel austenitic stainless steel flux-cored welding strip and a preparation method thereof. The invention belongs to the technical field of welding material preparation. The invention aims to solve the technical problems that the existing stainless steel welding strip for strip surfacing needs to be matched with a welding flux to protect a molten pool, and the corrosion resistance and the wear resistance of a cladding layer are poor. The invention discloses a low-nickel austenitic stainless steel flux-cored welding strip which is composed of a 06Cr18Mn5Ni4Cu2N stainless steel skin and flux core powder filled in the 06Cr18Mn5Ni4Cu2N stainless steel skin. The flux core powder is formed by mixing, by mass, 5%-7% of potassium feldspar, 17%-20% of rutile, 1%-2% of zircon sand, 0.5%-1% of Al-Mg alloy, 22%-25% of electrolytic manganese, 0.5%-1% of silicon iron, 10%-12% of chromium powder, 8%-10% of nickel powder, 0.5%-1% of ferromolybdenum, 5%-10% of copper powder, 1%-2% of metal cobalt powder, 0.5%-1% of titanium powder and the balance nitrided ferrochrome powder, and the nitrogen content of the nitrided ferrochrome powder is 8%-10%. By adding beneficial elements, the surfacing cladding layer has the advantages of high hardness, wear resistance, corrosion resistance and the like.

The invention relates to a low-lead copper alloy comprising the following elements in percentage by weight: 0.05-0.3% of plumbum (Pb), 0.3-0.8% of aluminum (Al), 0.01-0.4% of bismuth (bi), 0.1-2% of nickel (Ni), and more than 96.5% of copper (Cu) and zinc (Zn), wherein the content of the copper in the low-plumbum copper alloy is 58-70%. The low-plumbum copper alloy of the invention has the advantages of favorable material performance, favorable tenacity and favorable processing performance, and can enhance the intensity and corrosion resistance of the alloy.

The invention discloses a preparation method of a PTFE/SiO2/Al2O3 porous membrane coated on the surface of porous aluminum, and belongs to the technical field of porous metal material surface treatment. The preparation method comprises the steps of adopting a PTFE emulsion, a KH-560 modified silica sol and Al2O3 particles as raw materials, and uniformly mixing the raw materials according to the matching ratio so as to obtain a uniform PTFE/SiO2/Al2O3 mixed solution; secondly, dipping the surface-roughened porous aluminum in the PTFE/SiO2/Al2O3 mixed solution, coating, curing, and obtaining a PTFE/SiO2/Al2O3 film layer with the thickness being 40 to 60mum on the surface of the porous aluminum; and finally, using hydrochloric acid for corroding and removing the Al2O3 particles exposed on thePTFE/SiO2/Al2O3 membrane layer on the surface of the porous aluminum, and forming the PTFE/SiO2/Al2O3 porous membrane with the surface porosity being 5 to 40 percent and the surface aperture being 1to 10mum on the surface of the porous aluminum. The PTFE/SiO2/Al2O3 porous membrane coated on the surface of the porous aluminum prepared through the invention is high in specific surface area, controllable in surface hole structure, good in corrosion resistance and hydrophobicity, simple in preparation process, and capable of realizing industrial production.