54results about How to "Improve corrosion resistance and wear resistance" patented technology

The invention discloses a method for preparing anti-corrosion wear-resisting sintered Nd-Fe-B magnets. The method includes the following steps that first, sintered Nd-Fe-B magnet blanks are placed in an oil removing solution so that oil on the surfaces of the sintered Nd-Fe-B magnet blanks can be removed, and sand blasting and ultrasonic cleaning are performed on the sintered Nd-Fe-B magnet blanks; second, phosphating is performed on the sintered Nd-Fe-B magnet blanks; third, the products subjected to phosphating and bottoming are immersed into an electrophoresis solution to be subjected to cathode electrophoresis; fourth, primary water washing, spraying and secondary water washing are performed sequentially, and dehydration is performed; fifth, softening braking, curing baking and cooling are sequentially performed. Through the method for preparing the novel sintered Nd-Fe-B magnets, a surface cathode electrophoresis epoxy resin/nano-SiO2 composite coating subjected to phosphating and bottoming is prepared. The corrosion resistance and the wear resistance of the composite coating are greatly improved compared with a traditional epoxy resin coating, and the scratch resistance of the coating can also be correspondingly enhanced.

The invention relates to a device for inner surface modification by injecting plasma ion source, wherein: setting a tubular work-piece into a processing chamber, laying a columnar electrode and a tubular electrode allowing plasma diffusion in the tubular work-piece from inside to out side coaxially_ contacting the two electrodes with the radio frequency power supply, connecting a negative high tension supply between the tubular electrode and the tubular work-piece, also including a driving device capable of making relative rotation between tubular work-piece and tubular electrode; the tubular electrode is made up of electrode wires on the outer surface of tubular support, the electrode wires are in circumferential uniform distribution or screw-type distribution; the columnar electrode is a hollow tube with magnetic-irons in it; the tubular electrode is an interconnected hollow metal tube. the magnetic-irons are ring, and axially uniformly distributed with homopolarity opposition. The invention intensifies the sputtering of plasma to center electrode material by setting magnetic-irons in the tubular electrode, and improves the processing efficiency of tubular work-piece inner surface.

The invention relates to the technical field of building materials, and particularly relates to anti-corrosion concrete, which comprises the following components in parts by weight: 200-250 parts of portland cement, 60-80 parts of a polymer emulsion, 10-30 parts of a film-forming additive, 5-10 parts of a dispersant, 20-40 parts of mineral powder, 8-15 parts of a rust inhibitor, 6-8 parts of an air entraining and water reducing agent, 100-150 parts of water, 5-10 parts of sodium silicate, 1.5-3.5 parts of potassium silicate, 10-15 parts of wear-resistant corundum filler particles, 3-8 parts of an antifreeze and 2-5 parts of an accelerator. The anti-corrosion has the beneficial effects that the wear-resistant corundum filler particles as a wear-resistant component is matched with the mineral powder and the antifreeze, so that the wear resistance and corrosion resistance are greatly enhanced, the cost is low, the use and maintenance are also very convenient, the service life of a building can be effectively prolonged, and the maintenance cost is greatly reduced.

The invention provides a special graphite carbon sleeved roller for a corrosion-resistant and abrasion-resistant continuous annealing line and a manufacturing process thereof, and relates to the technical field of non-oxidation continuous annealing production of strip steel, and the special graphite carbon sleeved roller is designed for solving the technical problems that an existing furnace roller is poor in corrosion resistance and abrasion resistance and high in cost. The special graphite carbon sleeved roller for the corrosion-resistant and abrasion-resistant continuous annealing line comprises the following components in percentage by mass: 80-90% of C, 1-3% of Al, 1.2-3.0% of Si, 0.4-1.3% of Ti, 2.5-3.5% of Mg, 1.8-3% of Ca, 0.9-1.8% of Fe, 1.2-2.1% of Na and 1-2.3% of W; and the manufacturing process of the special graphite carbon sleeved roller comprises the following steps: additive preparing, impregnation and roasting. The embodiments of the invention are used for improving the corrosion resistance and abrasion resistance of furnace rollers.

The invention discloses a manufacturing process for a corrosion-resistant and wear-resistant steel pipe. The process comprises the following steps of: sectioning a steel pipe into two parts; performing spray coating; and welding. Thus, the aim of spray-coating an alloy protection layer on the inner surface of a long steel pipe, small steel pipe or bent steel pipe is fulfilled, the corrosion resistance and the wear resistance of the steel pipe are effectively improved, operating requirements under different working conditions are met, and manufacturing difficulty and production cost of the process are also reduced. The manufacturing process for the corrosion-resistant and wear-resistant steel pipe is simple in design, is easy to realize and has an obvious beneficial effect.

The invention relates to a self-adjusting preload steel wire rope rigging. The self-adjusting preload steel wire rope rigging comprises a rigging body, wherein the middle part of the rigging body is provided with a plurality of outer coniform trapezoidal bulges, an upper semicircular body and a lower semicircular body which are buckled together are arranged at the outside of the outer coniform trapezoidal bulges; one end of each of the upper semicircular body and the lower semicircular body is provided with a fixing plate, and each of the other ends of the upper semicircular body and the lower semicircular body is provided with an external spring support; the rigging body penetrates through the fixing plate and the external spring support and then is fixed by a locking nut; the middle parts of the inner sides of the upper semicircular body and the lower semicircular body are provided with projected blocks; a cavity is formed between the projected blocks and the spring support; the rigging body is sleeved with a spiral spring; the upper semicircular body and the lower semicircular body are compressed on the fixing plate under the function of the preload of the spiral spring. The self-adjusting preload steel wire rope rigging provided by the invention automatically adjusts through the spiral spring, which is timely and reliable; and the cumbersome labor is saved, and the performance reduction due as a telescopic boom is not in place due to the untimely adjusting as well as the not smooth operation and the early damage of the parts due to the impact can be avoided; electrostatic spray is performed on the surfaces of the outer coniform trapezoidal bulges and the inner coniform trapezoidal bulges, so that the friction resistance of the automatic adjustment can be reduced.

The invention relates to the technical field of electroplating additives and discloses environment-friendly brightener for non-cyanide alkaline zinc plating and a preparation method thereof. The brightener is prepared through polymine, IMZE, nitrogen heterocyclic derivatives, modified aromatic aldehyde compounds, epoxy chloropropane and water. According to the environment-friendly brightener for non-cyanide alkaline zinc plating and the preparation method thereof, the brightness of a galvanization layer is improved, the thickness of the galvanization layer can reach 30 micrometers, the galvanization layer is free of frangibility, and the dispersing power and the covering power of plating solution exceed those of traditional alkaline zinc plating brightener.

The invention discloses a standard knot with a powder plastic surface for a tower crane. The standard knot comprises four vertical main chord members, two connecting square frames, eight first reinforcing ribs, two second reinforcing ribs and a ladder. The upper end and lower end of each main chord member are respectively connected with the connecting square frames; both ends of each first reinforcing rib are connected with the main chord members; the second reinforcing ribs are connected to the square frames; the ladder is connected with the second reinforcing ribs; and the surface of the standard knot is provided with a powder plastic surface. The standard knot with the powder plastic surface for the tower crane disclosed by the invention has the advantages of no requirement on a thinner, no environmental pollution caused by construction and no harm to human body; and the plastic surface does not flow and has strong adhesion, high corrosion resistance and wear resistance and lower cost than a painting process.

The invention discloses a copper sleeve structure with an integrated sleeve base. The copper sleeve structure with the integrated sleeve base comprises an inner sleeve and an outer sleeve, the inner sleeve comprises an upper sleeve base, a middle shaft sleeve and a lower sleeve base, and the outer sleeve sleeves the outer side end of the inner sleeve. The outer sleeve comprises a flange base and an outer sleeve body, the flange base is arranged at the bottom end of the outer sleeve body in a surrounding mode, mounting screw holes are formed in the four corner ends of the flange base, the outersleeve body and the flange base are of an integrated structure, and a plurality of oil injection holes are formed in the outer side ends of the outer sleeve body and the middle shaft sleeve. According to the copper sleeve structure with the integrated sleeve base, a copper sleeve is divided into the inner sleeve structure and the outer sleeve structure, the inner sleeve is prepared from copper alloy, the outer sleeve is prepared from stainless steel materials, and the production cost is reduced; an existing pure copper sleeve can be replaced, and economy and practicability are achieved; compared with the existing pure copper sleeve, the requirements of abrasion resistance and various properties are met, the corrosion resistance and abrasion resistance performance is improved, copper raw materials are saved; and the copper sleeve and the flange base are of an integrated structure, installation is convenient, time is shortened, labor is saved, the service life of the copper sleeve is prolonged, and the using reliability of the copper sleeve is greatly improved.

The invention belongs to the technical field of vacuum equipment, in particular to an anti-corrosive anti-wear water-ring vacuum pump which comprises a pump body and a pump cover fixedly connected together, and a motor. A rotary shaft of the motor penetrates through the pump body so as to be inserted into a pump cavity enclosed by the pump body and the pump cover; an impeller arranged on the rotary shaft, a circular disc fixed between the pump body and the pump cover, and a seal suite arranged between the rotary shaft and the pump body are arranged in the pump cavity; the impeller comprises ahub, and multiple blades arranged along a circumferential direction of the hub in a spaced manner; each blade is arranged along an axial direction of the hub; an included angle is arranged between each blade and a radial direction of the hub; a reinforcement hoop is connected between the end parts, close to one side of the circular disk, of each two adjacent blades; the pump body, the pump cover,the impeller and the circular disk are integrally injection-molded by nylon or PPS (Polyphenylene Sulfite) plastics. According to the anti-corrosive anti-wear water-ring vacuum pump, the problems of poor corrosion resistance and wear resistance and poor impeller stability of an existing water-ring vacuum pump are solved, the production efficiency is improved, and the production cost is reduced.

The invention discloses a ceramic-based aggregate texture stone-like coating, which contains, by weight, 50-75 parts of deionized water, 25-30 parts of a silicone-acrylic emulsion, 12-15 parts of a polyurethane emulsion, 18-28 parts of a cellulose solution, 200-300 parts of pottery sand, 70-100 parts of natural sandstone, 30-50 parts of ceramic powder, 4-6 parts of a dispersant, 3-8 parts of a water-retaining agent and 1-2.5 parts of an antifoaming agent. With the ceramic matrix as the main material, use of color sand is saved, and a reasonable space structure after formation of a stone-like coating is achieved. By combining the ceramic matrix with color sand and other components, a unique compact structure with pores is formed. The coating of the invention has toughness, wear resistance, crack resistance and tight and nice texture.

The invention discloses a method for deposition modeling of a guide roller based on a cobalt-chromium-tungsten alloy. The method comprises the following steps: step I: raw material preparation: taking the following materials by weight: 70 to 75% of Cr12MoV cold work die steel waste, 5 to 9% of 1Cr18Ni9Ti, and the balance of Q235 steel scrap; step II, smelting; step III, casting and rough machining; step IV, preheating treatment; step V, preparation of a deposition modeling material; step VI, deposition modeling; and step VII, nitriding treatment. The guide roller made of Cr12MoV cold work die steel waste, 1Cr18Ni9Ti, and the balance of Q235 steel scrap has structural strength and performance as those of a common hard alloy; and by forming a cladding layer on the surface of the guide wheel in a shielded metal arc welding manner, the guide wheel made of the cobalt-chromium-tungsten alloy is greatly higher in corrosion resistance and wear resistance.

The invention provides a corrosion-resistant and wear-resistant roll wrapper. The corrosion-resistant and wear-resistant roll wrapper comprises two layers of structures including a traction layer anda polyester strong layer, the traction layer consists of a main body material, a reinforcing system, a vulcanization system, an anti-ageing system and a plasticizer according to the mass ratio of 100:50-70: 8-12: 2-4: 15-25, and the polyester strong layer is activated and modified. On the basis of an existing product, the corrosion resistance and the wear resistance of the traction layer are greatly improved, and the service life is prolonged twice; and the adhesion power between the strong layer and the traction layer of the polyester fabric is improved, functions of vibration reduction andnoise reduction are fulfilled, and the problems that delaminating of a wide-width fabric is easily caused under the condition of rolling by large tension, and thus the wide-width fabric is short in service life are solved.

The invention provides a powder recovery device and a powder recovery system of spraying equipment, and relates to the technical field of industrial metallurgy. The powder recovery device comprises arecovery isolation unit, a filter element and a maintenance assembly for ensuring normal work of the filter element; the filter element and the maintenance assembly are arranged in the recovery isolation unit; and the maintenance assembly acts on the filter element so as to ensure the air permeability of the filter element, so that the filter element has good filtering performance. The technical problem in the prior art that dust-containing waste gas generated during electrostatic spraying on a brick body cannot be recycled is solved.

The invention discloses a rigid wear-resistant material with high strength. The rigid wear-resistant material with high strength comprises components by mass as follows: 1.9% or higher-2.8% or lower of C, 1.4% or higher-2.9% or lower of Si, 0.6% or higher-0.8% or lower of Mn, 5% or higher-12% or lower of Cr, 0.6% or higher-1.2% or lower of Cu, 0.1% or higher-0.3% or lower of Mo, 0.01% or higher-0.04% or lower of P, 0.01% or higher-0.04% or lower of S and the balance of Fe and inevitable impurities. The wear-resistant material is high in strength and rigidity and good in wear resistance.

The invention relates to a valve seat of a double-clip type butterfly valve for a coal cinder pipeline. The valve seat comprises a framework and a rubber liner; a cavity is formed in one surface of the framework; a groove is formed in the cavity; the rubber liner is located inside the cavity and fixed on the framework by use of the groove. The valve seat of the double-clip type butterfly valve for the coal cinder pipeline has the beneficial effects that the existing structure that the valve seat is covered with the rubber liner is broken through, instead, the structure is so designed that the valve seat is covered with the rubber liner, the valve seat framework is made of 153 cast alloy iron instead of common carbon steel so that the corrosion resistance and the wear resistance can be improved, the groove is formed in the framework so that the rubber liner can be prevented from falling, and the rubber liner is made of high-abrasion resistance rubber high in rubber content and is not easy to tear.

The invention provides an environmentally-friendly non-cyanide alkaline silver plating electroplating liquid having a dispersive capacity reaching up to 84.12 percent, which is considerably higher than a dispersive capacity being 59.4 percent to 72.7 percent in the same domestic industry, and is approximate to a dispersive capacity being 86.04 percent in the foreign advanced technology; a platingliquid performance is greatly improved compared with a domestic company, and the surface gloss and the stability of a plating layer are remarkably improved; compared with the foreign advanced technology, the invention still has a margin but undoubtedly has a great pioneering significance and enthusiasm on improving a domestic non-cyanide alkaline silver plating technology and breaking a foreign high-technology monopoly, and has a wide market prospect; a full silver plating layer with a bright mirror surface can be obtained, a current density range is wide, a surface is smooth, an anti-tarnishproperty is good, the corrosion resistance and the wear resistance are high, a binding force of the plating layer is good, a dispersive capacity and a covering capacity are excellent, electroplating wastewater is treated easily, the maintenance is simple, and the economy and the practicability are realized.

The invention provides a novel environment-friendly chromium-free passivator. The passivator comprises, by weight, 30-35 parts of water-based acrylic resin, 15-20 parts of laponite, 3.5-4 parts of citric acid, 10-12 parts of phytic acid, 7-8 parts of zinc chloride, 3-5 parts of ethylene glycol phenyl ether, 8-12 parts of glycine, 3.5-4 parts of sodium molybdate, 8-12 parts of polyaspartic acid, 4-6 parts of oxidized starch, 4-7 parts of sodium citrate, 3-3.5 parts of amine oxide and 50-55 parts of deionized water. The passivator can form a dense protective film on the surface of a plated part,the formed protective film has excellent adhesion and can be closely attached to the surface of the plated part, and thus the corrosion resistance and wear resistance of the plated part are greatly improved.

The invention belongs to the field of an electric material and discloses a cable sleeve pipe. The cable sleeve pipe is prepared from the following raw materials: polyethylene resin, chloric ether resin, phenolic resin, chlorinated paraffin, borax, sepiolite, glass fiber, magnesium hydroxide, palygorskite, zinc borate and sodium dodecyl sulfate. The cable sleeve pipe provided by the invention has high acid, alkali and salt resistance and high high-temperature and cold resistance.

The invention discloses a centrifugal pump low in failure rate. The centrifugal pump comprises a pump body, an impeller, a pump cover, a machine seal gland, a suspension frame and a rotating shaft, wherein the pump cover is fixed to one side of the pump body, a pump cavity for installing the impeller is formed between the pump cover and the pump body, the suspension frame is fixed to one side of the pump cover, and the rotating shaft is supported in the suspension frame through a bearing; one end of the rotating shaft extends into the pump cavity, the impeller is arranged in the pump cavity ofthe pump body and is fixed at the end of the rotating shaft, and a machine sealing cavity is in a circular truncated cone shape; the cross section of the machine sealing cavity is in a trapezoid shape, and an air guiding channel is formed in the inner wall of the machine sealing cavity; the air guiding channel is connected with an air storage cavity in the pump cover, the upper portion of the airstorage cavity is connected with an exhaust channel, and a drainage channel is further formed in the inner wall of the machine sealing cavity; a cooling plate is further arranged in the machine sealing cavity, and the inner wall of the machine sealing cavity is subjected to surface enhanced modification. The centrifugal pump is low in fault rate, and has high market competitiveness and application and popularization value.

The invention relates to a preparation method of a TiSi-GrAl-N nanometer coating. The method comprises the first step of preprocessing, the second step of washing, the third step of ion nitriding, the fourth step of transition layer preparing and the fifth step of surface layer preparing. By means of the method, the bonding strength between the nanometer coating and a matrix can be improved through nitriding treatment, TiSi adopted in the nanometer coating is used for improving the corrosion resistance and the abrasion resistance of the nanometer coating, GrAl is used for improving the high-temperature-resistance of the nanometer coating, guaranteeing the bonding tightness of the nanometer coating, improving the rigidity of a workpiece and reducing the brittleness of the workpiece. According to the method, the production efficiency is high, and cost is low.