32results about How to "Improve anti-corrosion and wear-resistant effect" patented technology

The hardening ceramic processing method for surface of piston rod includes the steps of forging, normalizing, coarse machining, seasoning, semi-finishing, stress-eliminating tempering, coarse grinding, spraying ceramic and finishing. Compared with conventional production process, the present invention has reduced hot processing time, lowered rejected product rate, and greatly increased piston rod life.

The invention relates to an in-situ growth surface heat treatment process based on a composite nitriding metal surface base. The in-situ growth surface heat treatment process comprises the steps thatliquid ion composite nitriding treatment is carried out on a to-be-treated workpiece so as to form an anti-corrosion and wear-resisting compound layer structure on the surface of the workpiece; the compound layer structure comprises a nitride structure, a carbide structure and an oxide structure; and the workpiece subjected to nitriding treatment is subjected to zinc-nickel-nitrogen-oxygen in-situcomposite growth treatment so as to form an anti-corrosion and wear-resisting layer on the surface of the workpiece. The binding force of a diffusion layer on the surface of the workpiece treated through the process and a matrix is high, falling off is not prone to happening, the anti-corrosion performance and wear resistance of the workpiece are good, surface hardness is high, and high impact resistance and washing resistance are achieved.

The invention discloses an automatic cleaning device for the surface of a sensor, which is characterized in that a rotating impeller is arranged on a port on the head of a high-pressure water pipe, and the rotating impeller and the high-pressure water pipe form clearance fit; an axial elastic pressing piece is arranged between the rotating impeller and the high-pressure water pipe; blades are arranged on the circumference of the rotating impeller; the impeller is provided with an axial water outlet opening; the outer end face of the rotating impeller is provided with a chorionic strip; the head of the high-pressure water pipe is provided with a pipe orifice which is aligned to a spray pipe of the blades; and various members are made of corrosion and abrasion resistant materials. The device has a simple structure and good cleaning effect, adopts mechanical members, has good corrosion and abrasion resistance, can be arranged under water, is used for automatically cleaning the surface ofan underwater sensor, is simple and convenient to operate, and can meet the demand of online instruments for on-scene monitoring.

The invention discloses an anticorrosive and antiwear treatment method for a Lurgi gasifier, belongs to the technical field of coal gasification equipment, and provides the anticorrosive and antiweartreatment method for the Lurgi gasifier to solve a technical problem. The technical scheme adopted to solve the technical problem is that the anticorrosive and antiwear treatment method for the Lurgigasifier comprises the following steps: (1) performing sanding on the corroded surface of the interior of a neutral cylinder and / or the inner wall of an upper conical segment of the Lurgi gasifier byusing abrasive paper to remove a corrosive layer, and welding a hexsteel; and (2) performing preheating treatment on the hexsteel, and then performing thermal spraying with an anticorrosive and antiwear material; and the anticorrosive and antiwear material is composed of the following components in parts by weight: 35-50 parts of tungsten carbide powder, 27-46 parts of nano zirconium oxide, 10-15parts of nano titanium dioxide, 5-10 parts of zinc, and 10-15 parts of activated aluminium oxide. The anticorrosive and antiwear method provided by the invention has good anticorrosive and antiwear effects, can effectively reduce maintenance charges, and can be widely applied to the field of synthesis gas preparation.

The disclosure relates to a concrete cover anchor bolt device for a PC beam support, comprising: an anchor bolt; a first spherical nut threadedly connected to the first end of the anchor bolt; a spherical nut seat arranged at the first end of the anchor bolt, the The concave spherical surface of the spherical nut seat is closely matched with the raised spherical surface of the first spherical nut; the second spherical nut is threadedly connected to the second end of the anchor bolt; the spherical washer is arranged on the second end of the anchor bolt, and the spherical washer The convex spherical surface closely matches the concave spherical surface of the second spherical nut; the lock nut is threadedly connected to the second end of the anchor bolt and is located on the side of the second spherical nut toward the second end; wherein the first spherical nut, the spherical The surfaces of the nut seat, the spherical washer, the plane washer, the second spherical nut and the locknut are treated with a nitriding process and an in-situ growth composite material process to form an infiltrated layer of anti-corrosion and wear-resistant materials. The disclosure can improve the anti-corrosion and wear-resisting properties of the concrete cover anchor bolts and prolong the service life.

The invention discloses a rare earth-nickel-cobalt-tungsten disulfide multi-element alloy anti-corrosion and wear-resisting composite plating layer and electroplating solution and a preparation method of the electroplating solution. The plating layer is of a particle structure with an intermetallic compound and nanometer tungsten disulfide dispersed on a nanocrystalline matrix. The plating-state microhardness of the plating layer ranges from HV 700 to HV 1,200. The plating layer is prepared from, by weight, 1%-55% of cobalt, 0.5%-12% of rare earth, 0.1%-5% of tungsten disulfide and the balance nickel. The electroplating solution is prepared from 260 g / L-400 g / L of nickel sulfate, 10 g / L-75 g / L of cobalt sulfate, 30 g / L-50 g / L of nickel chloride, 35 g / L-55 g / L of boric acid, 0.1 g / L-28 g / L of rare earth, 1 g / L-35 g / L of sodium borohydride, 2 g / L-20 g / L of triethylene tetramine, 5 g / L-40 g / L of citric acid, 5 g / L-20 g / L of malonic acid and 0.01 g / L-4.9 g / L of tungsten disulfide. The appearance of the plating layer is bright, smooth, free of cracks and compact, and meanwhile the plating layer is high in plating-state hardness, small in internal stress, high in thickness plating capacity and good in anti-corrosion and wear-resisting performance and has good comprehensive mechanical performance; meanwhile, the electroplating solution and the plating layer are simple in preparation method, and operation is easy; and adopted materials are friendly to environment, production efficiency is high, and energy saving and environment protection are achieved.

The invention relates to a degassing device for transformer oil-chromatography online monitoring. The degassing device for transformer oil-chromatography online monitoring comprises a U-shaped blow-sweep pipe, a porous quartz sieve plate, a trapping pipe and a six-way valve, wherein the external surface of the six-way valve is coated with an anticorrosion and antiwear layer, and the anticorrosion and antiwear layer is prepared from, by weight, 20-30 parts of quartz powder, 10-15 parts of mica powder, 5-7.5 parts of silicon carbide, 2-6 parts of isocyanate, 11-15 parts of acrylic resin, 22-30 parts of chlorinated polyether resin, 5-10 parts of zinc stearate, 1-4 parts of zinc borate, 10-15 parts of xylene, 2-6 parts of poly 2,3-dimethylaniline, 4-7 parts of double benzylamine ether, 10-13 parts of polymeric ferric silicate sulfate, 10-23 parts of white oil, 5-10 parts of ferro-silicon nitride powder and 15-20 parts of water. The degassing device is provided with the anticorrosion and antiwear multiple-way valve, and the safety performance of the degassing device can be fully guaranteed.