44results about How to "Improve heat and wear resistance" patented technology

The invention discloses a tooth roller and a grate of a single-tooth roller crusher for crushing sinter cakes, belonging to the field of initial material processing in metal smelting industry. The invention is characterized in that: the tooth roller is produced by inlaying 5-14 crushing toothed rings in a tooth roller that can be available for inlay, the grate is produced by surfacing a grate basic body or conducting secondary casting to form a layer of wear-resisting alloy, wherein the crushing toothed rings comprises 3-4 hocks which are mutually occluded and arranged together in order, a layer of the wear-resisting alloy is formed by surfacing or carrying out secondary casting on the crown and periphery of the hock, the grate basic body is produced by sealing a cast steel groove-shaped body, a water-stop sheet and a sealing cover by welding, and the crushing toothed rings, tooth roller and grate basic body are all can be prepared into a water cooling structure and a half-water cooling structure. According to the invention, the tooth roller and the grate of the full water cooling single-tooth roller crusher have excellent heat resistance and wear resistance because of large flow area and good cooling effect, the processing technology of the hock, the tooth roller and the grate is simple, the replacement is convenient, the cost of processing and maintenance is reduced, and the hock and the grate has good repairability.

The invention discloses an aluminum-plastic composite film for flexible packaging of a lithium battery. The aluminum-plastic composite film comprises a wear-resistant layer, a first bonding layer, analuminum foil layer, a passivation layer, a second bonding layer having corrosion resistance and a heat sealing layer which are sequentially arranged from the outside to the inside, and the passivation layer comprises, by weight, 100 parts of acrylic resin, 5-15 parts of a chromium-containing compound, 1-5 parts of a phenyltrimethylsilane coupling agent, 1-5 parts of a titanate coupling agent and30-50 parts of water; and the second bonding layer having corrosion resistance includes, by weight, 100 parts of acid-modified polyolefin resin, 1-5 parts of an epoxy system curing agent, 1-5 parts offluorine-containing micro-powder, 10-20 parts of a cyclohexane solvent and 20-40 parts of a butanone solvent. The aluminum-plastic composite film has the advantages of obviously improved electrolyteresistance, stability in bonding among the first bonding layer, the aluminum foil layer, the passivation layer, the second bonding layer having corrosion resistance and the heat sealing layer, high deep-drawing intensity and long service life.

The invention relates to a process for preparing a WC hard alloy coating through laser cladding of a hot rolling bar apron board roller way, which is characterized in that weight percentage of spherical casting tungsten carbide is 40-60%, a nickel-based alloy is a bonding phase with weight percentage of 60-40%. The process comprises the following steps: preparing and mixing, machining an operational layer and cleaning the surface, removing oil stain by a solvent or a cleaning compound, removing a rust layer by polishing or sandblasting; performing laser cladding treatment, selecting the bonding phase and the spherical casting tungsten carbide powder with appropriate proportion, adjusting powder feeding rate of an automatic powder feeding apparatus for satisfying the powder feeding rate required by the coat layer thickness; and employing diamond or cubic boron nitride for grinding and processing the cemented carbide coating through laser cladding to the required size. On the hot rolling bar apron board roller way with a common stainless steel material, the WC hard alloy coating with thermal wear resistance is formed on a matrix through laser cladding, service life of the hot rolling bar apron board roller way can be increased, and the laser manufacture of the hot rolling bar apron board roller way can be realized.

This high performance hot-work die steel accounting for weight has following chemical composition: C: 0.70-1.98,Si:0.30-1.50,Mn:0.20-0.70,Cr:0.80-2.00,W:0.80- 1.40,Mo:1.00-1.80,Ni:1.00-3.00,V:0.30-1.20,Bi:0.01-0.02,rare earth Si and Mg:0.05-0.08,P<0.03,S<0.03, the rest is Fe and inevitable impurity. The HRC hardness of it can be adjust by need from 20-60 degree, through the way of heat treatment such as annealing and quenching. The invention has enough mechanical strength and toughness, super ordinary thermal oxidation resistance and cold-heat impact resistance, heat resistance, wear resistance, and aluminium liquid resistance. After process into die, not need surface treatment of 'nitriding', just need quenching and tempering for needed hardness.

The invention relates to a method for preparing a wear-resistant heat-resistant coating through laser cladding of surface of a guide roller by a bar rolling mill, which comprises the following steps: removing oil and rust on the surface of the guide roller under room temperature; preparing alloy powder B with weight percentage of 15-50% in an A+B hard alloy composite powder; adjusting an automatic powder feeding apparatus so that the alloy powder from an automatic powder feeding head just falls in a laser molten pool, adjusting the powder feeding amount so that the coating thickness of the alloy powder can reach 0.8-2mm; selecting a 3.5*1mm broadband integration mirror, and adjusting the defocus amount for laser cladding, and forming an uniform and compact laser cladding layer on the surface of the guide roller. The hard alloy composite powder has good metallurgy and mechanical compatibility with a guide roller matrix, cladding layer thickness is 0.8-2.0mm, the hardness and thickness are uniform, and no crack and spalling phenomena can be generated.

The invention discloses a resin-based high-viscosity heat-resistant grinding wheel material, which is prepared from the following raw materials: modified phenolic resin, bisphenol-A epoxy resin, silicon resin, polyimide resin, bismaleimide, zinc stearate, graphite, precipitated calcium carbonate, titanium dioxide, diamond, cerium oxide, talcum powder, silicon carbide, silica, silicon nitride, aluminum oxide, boric oxide, boron nitride, azodicarbonamide, imidazole, phenyltrimethoxysilane, 4,4-dioxylbisbenzensulfonyl hydrazide, a silane coupling agent KH-570 and a wear-resistant additive. The prepared resin-based high-viscosity heat-resistant grinding wheel material has excellent wear-resisting property, good adhesion and high hardness; the heat resistance and the hardness of a resin grinding wheel are improved; cracks formed by rigid grinding is reduced; heat dissipation is fast; dispersion of a lot of heat released from the grinding wheel in the cutting process is facilitated; and the resin-based high-viscosity heat-resistant grinding wheel material plays a role in reducing the cutting temperature.

The invention discloses a continuous composite plating sand overlying tank for a diamond cutting line. The continuous composite plating sand overlying tank comprises an electroplating bath body, a cathode roller, an anode rack, a sand loading tank and a wire guiding wheel, wherein the cathode roller is connected with the cathode of a power supply, and the anode rack is connected with the anode of the power supply; the cathode roller is arranged on the outer side of the electroplating bath body; a plating solution is filled in the electroplating bath body; diamond micro-powder is loaded by the sand loading tank; the anode rack, the sand loading tank and a cutting steel wire wound at the upper part and lower part of the cathode roller are submerged in the plating solution; the anode rack is fixed below the sand loading tank; the cutting steel wire below the cathode roller is buried in the diamond micro-powder. The composite plating sand overlying tank has the characteristics of high electroplating efficiency, high controllability on the length of the needed electroplating bath body and the plating quality, strong binding force of cutting line diamond with a base body, good heat-resisting and abrasion-resisting properties and high cutting efficiency.

The invention provides a heat-proof wear-proof nano anti-corrosion coating material. The heat-proof wear-proof nano anti-corrosion coating material is prepared from the following components in parts by weight: 40 to 60 parts of epoxy resin emulsion, 20 to 30 parts of modified organic silicon resin, 6 to 12 parts of modified nano titanium nitride, 5 to 10 parts of bentonite, 10 to 16 parts of ceramic powder, 10 to 16 parts of graphite powder, 2 to 6 parts of a coalescing agent, 0.1 to 0.5 parts of a dispersing agent, 0.6 to 1.2 parts of pigment, 0.1 to 0.5 part of a defoaming agent and 20 to 30parts of water, wherein the modified organic silicon resin is mainly prepared from organic silicon resin, acrylic acid, an initiator and silica sol; the modified nano titanium nitride is mainly prepared from nano titanium nitride and sodium dodecyl sulfonate. The heat-proof wear-proof nano anti-corrosion coating material provided by the invention not only is good in corrosion resistance, but alsohas very good heat-proof and wear-proof properties.

The invention discloses a surface weather-resistant coating for mining machinery, and relates to the technical field of the mining machinery. The surface weather-resistant coating is prepared from thefollowing components: sodium diacetate, turpentine oil, zinc naphthenate, polyacrylamide, pigment, propylene glycol, waterborne acrylic resin, a defoaming agent, calcium carbonate powder, bamboo fibers, 8-hydroxyquinoline, diethylene glycol monobutyl ether, bisepoxyl glycol diglycidyl ether, diacetone acrylamide, amine sorbate, hexafluorobutyl methacrylate, chitosan modified nano-alumina and film-forming resin. After the surface weather-resistant coating for the mining machinery is sprayed onto the surfaces of the mining machinery, the solidification effect of the surface weather-resistant coating on the mining machinery is good, and the mining machinery can be effectively protected; the surface weather-resistant coating is good in heat resistance and wear resistance, and has good weatherresistance.

A grate plate of a pellet traveling grate and a preparation method thereof relate to a structural technology of the grate plate of the traveling grate in the iron and steel smelting pellet technology. The preparation method comprises the following steps: hot-melting the alloy formed by C, Si, Mn, Cr, Mo, W, Ni, Al, V, P and S elements, pouring in the casting box formed by moulding sand, curing agent, silane and resin, cooling, demoulding, quenching at 1000-1100 DEG C, and finally tempering to prepare the grate plate of the pellet traveling grate, wherein the plate body of the grate plate is provided with at least two rows of long through-holes, and the through-holes at the four corners of the plate body are provided with connection ribs which are vertical to the length direction of the through-holes. Therefore, the fracture resistance, fatigue resistance, oxidation resistance, heat resistance and wear resistance of the product are enhanced, the expansion coefficient is reasonable, and the service life is up to 16-18 months. As the grate plate of the invention has good overall performance, needs a little repair and saves the raw material, the labor intensity of users and the production cost are significantly reduced so as to realize efficient, energy-saving and environmentally friendly production.

The invention relates to the technical field of mechanical equipment, in particular to a roller type tube protecting device for a medicament delivery rubber tube of an emulsifying mix-load vehicle. The roller type tube protecting device comprises a support and a pulley, and is characterized in that: the upper part of the support and the front side, the back side, the left side and the right side near the edge part of the pulley are respectively provided with a roller; each roller is provided with an oil hole to prevent a shaft core of the roller from being corroded and oxidized; the roller is made of heat-resistant and wear-resistant materials, and also can be prevented from causing sparkles during friction with the rubber tube. The roller type tube protecting device for the medicament delivery rubber tube of the emulsifying mix-load vehicle has the characteristics of simple structure, good effects of heat resistance and wear resistance, and has the considerable economic benefit.

The invention relates to a heatproof wear-resistant alkali-free short glass fiber-reinforced nylon PA610T composition and a preparation method thereof. The composition is prepared from, by weight, 50 to 70 parts of PA610T, 15 to 37 parts of alkali-free short glass fiber, 3 to 5 parts of nanometer silicon nitride, 3 to 8 parts of a lubricant and 2 to 7 parts of an anti-oxidant. The preparation method comprises the following steps: weighing nylon, nanometer silicon nitride, the anti-oxidant and the lubricant according to the above-mentioned weight parts, carrying out uniformly mixing, pouring an obtained mixture into a hopper of an extruder and adding the alkali-free short glass fiber into a side feed inlet; starting the extruder and a vacuum pump and carrying out extrusion and granulation via the double screw-extruder so as to obtain am alkali-free short glass fiber-reinforced nylon PA610T composition; and drying the composition in a baking oven with a temperature of 90 to 110 DEG C for 2 to 6 h so as to obtain the heatproof wear-resistant alkali-free short glass fiber-reinforced nylon PA610T composition for subsequent usage. Compared with the prior art, the invention has the following advantages: the preparation method is simple and stable; the alkali-free short glass fiber and auxiliary agents are uniformly dispersed in nylon resin; compatibility of the short glass fiber and nylon resin is good; and the obtained composition has ideal mechanical properties and excellent heatproof and wear-resistant performance.

The invention provides a heatproof wearable wet sleeve which comprises a water tank sleeve and a main body, wherein the main body is in nested connection with the water tank sleeve; a first flange is arranged at the upper end of the main body; a plurality of second flanges are arranged on a side wall of the main body; a heatproof wearable layer is arranged on the inner wall of the main body. Due to the design, the heatproof wearable effect of the inner wall of the sleeve is improved and the cooling dissipating effect of the sleeve and a piston is also enhanced.

The invention discloses a preparation method of an anti-aging agent for a powder coating, and relates to the technical field of powder coating assistants. The preparation method comprises the following steps: (1) preparing dispersion liquid; (2) preparing modified liquid; (3) preparing premixed liquid; (4) mixing the premixed liquid and the modified liquid for reaction, and drying. The invention provides the preparation method of the anti-aging agent for the powder coating, wherein the prepared anti-aging agent has a good curing effect, good heat resistance and good wear-resisting property after being applied to the powder coating; by adding the anti-aging agent prepared by the method, dispersibility and fluidity of a powder coating mixture system are improved, compatibility with components in the powder coating system is good, melting time after mixing is short, and anti-aging property of a powder coating film can be obviously improved. Through high compatibility in the powder coating, hardness of the coating film can be greatly improved, and denseness of the coating can be improved, so that scratch resistance of the coating film is greatly improved.