Wear-resistant coating material
SUBSTANCE: proposed material contains a binder and filler. The binder is a Cu-Sn-Zn alloy, with the following ratio of components, in wt %: Sn - 1.0-4.0; Zn - 30-39 and Cu constitutes the rest. The filler is in form of industrial wastes of very hard materials in form of particles with size 2-4 mm. Content of the binder can be 20-30 wt %, and the filler - 70-80 wt %. The industrial wastes of very hard materials used can be ground wastes from a boring tool, cutter, as well as a carbide-tipped tool.
EFFECT: increased wear-resistance of working surfaces of machines and mechanisms due to use of wear-resistant coating material.
The invention relates to the field of engineering, in particular to increase wear of the working surfaces of machines and mechanisms in operation due to the use of material for wear-resistant coatings.
Known material for wear-resistant coatings containing polymer binder and corundum or carborundum filler. This material is used as wear-resistant coatings in hydrocyclones (A.S. USSR №1125058 And class. VS 5/85, 1984). The disadvantage of this material is the low resistance to abrasive and shock loads when the abrasive material and rocks.
Known materials for wear-resistant coatings the closest to the essential features and achieved technical result is a material containing as a binder marginalizowanie alloy and boron carbide as the filler (A.S. USSR №772582, CL VS 17/20, 1980). The disadvantage of this material is the low wear resistance to abrasive and shock loads when the abrasive material and rocks.
The objective of the invention is to provide a wear-resistant material suitable for the protective coating of machine parts subjected to wear during operation as a result of mechanical impact of working material to contact youdemi surfaces with high speeds and loads. Typical examples of such machines are the mechanisms used for crushing and grinding of rocks (e.g., centrifugal crusher, LLC "New Technologies", St. Petersburg, Crushing, grinding, classification, Issue # 4, 2003).
The rate of collisions of rock fragments with parts and units of crushers and mills is in the range of 30-300 m/s At such speeds, the shock of the broken materials of rocks on the unprotected surface lead to catastrophic wear products.
This technical result is achieved in that the material for the wear-resistant coating contains a binder and a filler according to the invention as a binder it contains alloy of Cu-Sn-Zn content, wt.%: Sn - 1,0÷4,0, Zn - 30÷39, Cu - rest, and as filler - industrial waste the highly rigid materials in the form of particles with a size of 2÷4 mm, the Advantage of this protective coating is that its durability is comparable with the wear resistance of components made of highly rigid material, and its impact strength is much higher impact strength of these materials as a binder plays the role of an elastic substrate, which "softens" shock and prevents the dye particles of the filler, consisting of high-strength material. The specified material coating which can be applied to almost any metal surface which is subjected to wear during operation. The coating can be applied as the factory product, and during operation, without the use of special expensive equipment. Coating on its durability is superior to such well-known materials, such as white and chromium cast iron, approaching VC 15. Its use will significantly reduce the cost of manufacture and operation of high-wear parts and, thus, will increase the life of the product overhaul.
It is advisable that the material contains a binder in an amount of 20÷30 wt.%, as the filler in the amount of 70÷80 wt.%. Given the content of the above components in the material is optimal. The specified amount of the binder provides the desired traction force components of the material and material to the metal surface and the desired plasticity of the material, preventing the chips of material from the surface.
It is advisable that as industrial waste highly rigid materials used shredded waste cutters, drilling tools. The use of waste significantly reduces the cost of wear-resistant material.
The analysis of the prior art showed that the claimed set of essential features set forth in f is rule of the invention, unknown. This allows us to conclude that it conforms to the criterion "novelty".
To check the compliance of the claimed invention, the criterion of "inventive step" conducted an additional search of known technical solutions in order to identify characteristics that match the distinctive features of the prototype of the characteristics of the claimed technical solution. Found that the claimed technical solution is not obvious from the prior art. Therefore, the claimed invention meets the criterion of "inventive step".
The invention is illustrated an example of practical realization of the stated material.
An example of practical implementation.
Material for wear-resistant coatings were made as follows. Industrial waste is the highly rigid material is a spent product: drilling tools, cutters, and carbide-tipped tools. The fraction with a particle size of 2÷4 mm was used as filler. As a binder used alloy containing: copper - 60%, tin - 1% and zinc - 39%. Filler covered in heat-resistant trays, the trays were placed in a high temperature furnace, heated at a temperature of about 1160°filled With molten binder. It was passed the following ratio of components: filler - 75%, binder - 25%. After ohla the tion of the trays were removed, the resulting material for wear-resistant coatings. Further, the resulting material was placed on the surface of the wear of working parts grinding mechanisms and welded acetylene torch. Test results revealed an increase in resource wearing parts in 5-10 times. In addition, this material can be used for recovery (repair) linings to their original state by applying this material to the damaged areas of the lining through the welding torch.
Based on the above we can conclude that the claimed material may be realized in practice with the achievement of the claimed technical result, i.e., it meets the criterion of industrial applicability.
1. Material for wear resistant coating containing a binder and a filler, characterized in that it contains as a binder alloy of Cu-Sn-Zn content, wt.%: Sn - 1,0-4,0; Zn - 30-39, Cu - rest, and as filler - industrial waste the highly rigid materials in the form of particles with a size of 2-4 mm
2. The material for the wear-resistant coating according to claim 1, characterized in that it contains a binder in the amount of 20-30 wt.% and the filler in the amount of 70-80 wt.%.
3. The material for the wear-resistant coating according to claim 1, characterized in that as industrial waste highly rigid materials used ismelin the e waste drilling tool cutters, and carbide-tipped tools.
SUBSTANCE: invention concerns obtaining of metal product made of alloy on the basis of copper, tractable by turning, cutting or rolling. Blank made of alloy, containing, wt %: nickel 1-20, tin 1-20, lead 0.2-3, copper - the rest, is received by continuous casting with following forging, casting into molds, spray-type moulding or semicontinuous casting with following extrusion. Thermal treatment of blank by homogenizing annealing is implemented at temperature of single-phase structure existing with cooling with speed, providing prevention of cracking and restriction of two-phase structure moulding. Product machinability index from declared alloys exceed 80% relative to bronze in concordance with standard ASTM C36000 and can reach even 90%.
EFFECT: obtaining of metal product from alloy on the basis of copper, tractable by turning, cutting or rolling.
14 cl, 5 tbl, 4 ex
SUBSTANCE: invention refers to metallurgy and can be implemented for fabricating condenser tubes, pinion gears, bushings, paper-making clothes and other items. To upgrade strength of brass it has the following composition, wt %: copper 64.0-68.0; aluminium 4.0-6.0; manganese 1.5-2.0; iron 2.0-3.0; nickel 0.5-1.0; rhenium 0.001-0.002; tin 1.5-2.0; beryllium 0.01-0.02; zinc - the rest.
EFFECT: upgraded strength of brass.
SUBSTANCE: invention refers to powder metallurgy, and namely to sintered copper-based alloys, and can be used for producing parts with simple construction, which operate under friction conditions. Sintered alloy contains, wt %: stannum - 8.0-10.0; zinc - 12.0-14.0; lead - 2.0-4.0; nickel - 2.0-2.6; iron - 0.2-0.4; antimony - 0.1-0.2; arsenic - 0.1-0.2; and copper - the rest.
EFFECT: improving alloy hardness.
SUBSTANCE: invention refers to powder metallurgy, particularly to production of pseudo-alloys. It can be implemented as a material for fabricating contacts of vacuum switches of high accuracy and medium loaded. The method of producing copper-chromium pseudo-alloy with dispersed structure includes preparation of charge, compacting and sintering in vacuum at temperature 1000-1100°C. At preparing charge milling bodies in form metal balls with 8-10 mm diameter are used; ratio of weight of milling bodies and source powders corresponds to 15:1. Duration of charge mixing is 3-3.5 hrs at rate of mixer rotation 60 rev/min.
EFFECT: upgrading sintering of charge and producing pseudo-alloy with dispersed structure and high characteristics of hardness.
1 dwg, 1 tbl
SUBSTANCE: invention concerns metallurgy field and can be used for manufacturing of jewels, prize badges, coins, dinnerware, items of decorative and applied arts. For increasing of alloy oxidation stability it contains, wt %: zirconium 0.15-0.25; gold 2.2-2.5; indium 2.2-2.5; copper - the rest.
EFFECT: increasing of alloy oxidation stability.
SUBSTANCE: invention concerns metallurgy field and can be used mechanical engineering. For increasing of alloy durability it has following composition, wt %: zirconium 0,1-0,3; chrome 0,04-0,045; at least one component from group: cerium, praseodymium, neodymium, prometheum, samarium, europium, gadolinium, terbium, holmium, erbium, thulium, ytterbium, lutecium 0,01-0,13; rhenium 0,08-0,12; copper - the rest. Alloy ultimate strength at tension 200-220 MPa.
EFFECT: increasing of alloy durability.
SUBSTANCE: invention concerns metallurgy field and can be used for manufacturing worm gear rim, compression screw nut of mill, sleeves. For brass enduring increasing it contains, wt %: copper 60.0-70.0; aluminium 2.0-4.0; tin 0.2-0.4; iron 0.2-0.4; silicon 2.4-2.8; zirconium 0.2-0.6; manganese 0.2-0.6; lead 0.6-1.0; tantalum 0.05-0.1; calcium 0.02-0.06; zinc - the rest.
EFFECT: brass endurance increasing.
SUBSTANCE: invention concerns powder metallurgy. Particularly it concerns sintered alloys based on copper. It can be used for manufacturing details of simple arrangement, operating in fraction conditions. Sintered alloy contains, wt %: tin 4.0-6.0; zinc 4.0-6.0; lead 4.0-6.0; nickel 1.8-2.2; iron 0.4-0.6; manganese 4.0-6.0; silicon 0.4-0.6; boron 0.1-0.3; copper - the rest.
EFFECT: alloy hardening.
SUBSTANCE: invention refers to antifriction materials produced in powder metallurgy and implemented in components of friction units of machines, mechanisms, equipment and in current-collecting elements. Antifriction material contains, wt %: ferrophosphorus 0.50-5.40, carbon fibres 0.50-15.00, iron 10.91-26.25, graphite 0.16-5.16, granules 2.00-24.00, copper - the rest. Material is composed as sintered powders with localised inclusions of granules. Granules are of 0.4-2.0 dimensions and contain, wt %: copper 37.0-60.0, graphite - the rest. Material is produced by means of granulating of mixture of copper and graphite powders and successive mixing of granules with powders of ferrophoshorus, copper, graphite, iron and carbon fibres. Produced charge is formed and sintered. There is described a component of a friction unit with a baked layer of produced antifriction material. Produced porous-free antifriction material possesses high mechanical strength and ability to create dividing films on the surface which prevent wear of a contact pair.
EFFECT: obtaining material of high density facilitating prevention of wear of contacting pair.
SUBSTANCE: invention refers to antifriction materials produced in powder metallurgy and implemented in components of friction units of machines, mechanisms, equipment and in current-collecting elements. Antifriction material contains, wt %: ferrophoshorus 0.5-5.4; glass 0.5-25.0; iron 10.91-26.25; graphite 0.16-5.16; granules 2.0-24.0; copper- the rest. Material is composed as sintered powders with localised inclusions of granules. Granules are of 0.4-2.0 dimensions and contain, wt %: copper 37.0-60.0, graphite - the rest. Material is produced by means of granulating of mixture of copper and graphite powders and successive mixing of granules with powders of ferrophoshorus, glass, copper, graphite and iron. Produced charge is formed and sintered. There is described a component of a friction unit with a baked layer of produced antifriction material. Produced porous-free antifriction material possesses high mechanical strength and ability to create dividing films on the surface which prevent wear of a contact pair.
EFFECT: obtaining material of high density facilitating prevention of wear of contact pair.
SUBSTANCE: invention relates to a composition that can be used for protection of metal surfaces of whatever machinery in contact with corrosion provoking media against corrosion. The composition includes the following components with their ratio in wt %, i.e. 100 of polymer binding epoxy dianic pitch, 20 to 30 of epoxyurethane oligomer modifier, 42 to 48 of organo-silicon amine hardener - γ-aminopropyletoxysilane, 25 to 30 of mineral filler, i.e. titanium dioxide (rutile), 22 to 25 of chromium phosphate inhibiting pigment, 20 to 60 of organic solvents, 3 to 4 of aerosol thixotropic agent, 10 to 20 of anti-rust additive of metal zinc. Xylene or acetone, either butyl acetate, or ethylcellosolve are used as organic solvents.
EFFECT: production of benzene-and water-proof coat with high adhesion properties.
2 tbl, 8 ex
FIELD: metal processing.
SUBSTANCE: invention refers to processing of polymeric functional materials and can be used in machine building at coating of machine and aggregate units and units of transport systems, mainly pipes for transmission of oil products. The method for producing metal-polymeric coating consists in mixing polymer particles in a powdered form and metal containing precursor particles in a powdered form. Then a powdered mixture is settled on the surface of a unit and heated; polymer particles are melted. After that, thermolysis of the precursor and monolithic integration of coating are carried out. Polymer particles in a powdered form are selected out of a group containing polyamide, polyethylene terephthalate and polyethylene of high pressure. Particles in a powdered form of metal containing precursor represent formate or oxalate of copper, nickel, zinc or carbonyl iron. Heating, melting of polymer particles and thermolysis of precursor are carried out simultaneously in a thermo gas flow with a density of 3·106 -9·106 Wt/m2 within 10-4-10-3 sec. The mixture is settled and monolithic integration of coating is performed on the unit heated to a temperature of T=Tm+5÷40°C, where Tm is the temperature of polymer melting at the density of the gas flow of 3-5 atm.
EFFECT: method allows for high processibility and upgrading of adhesion hardness, strength and rupture strength at tension.
FIELD: cathodic protection of metalwork.
SUBSTANCE: proposed paint-and-varnish material for corrosion protection of metalwork includes electrically conducting film-forming agent (electrically conducting polyethylene) and carbon nanotubes, from 10 to 80% of volume of paint-and-varnish material which increase electric conductivity and resistance to aggressive media and consequently mechanical strength of metalwork. Proposed paint-and-varnish material may additionally contain high-dispersed zinc powder ensuring additional cathodic protection from 40 to 90% of volume of paint-and-varnish material.
EFFECT: enhanced efficiency of corrosion protection of metalwork during protracted period of operation due to smooth electrical potential equal to potential of metalwork being protected.
5 cl, 1 tbl
FIELD: application of multi-layer priming coats for corrosion protection of metalwork subjected to action of aggressive media.
SUBSTANCE: proposed multi-layer coat at total thickness of 220-240 mcm consists of priming layer, 80-100 mcm thick, intermediate layer, 70-90 mcm thick and covering layer. Priming, intermediate and covering layers are formed from paint-and-varnish material on base of film-forming agent; this material contains 10-48 vol-% of carbon nano-tubes and 40-86 vol-% of highly-dispersed zinc filler.
EFFECT: enhanced resistance to action of aggressive media; increased service life of articles.
2 dwg, 8 ex
FIELD: chemical industry; printing industry; powder metallurgy industry; cosmetic industry; other industries; production and application of the highly anticorrosive metallic pigments.
SUBSTANCE: the invention is pertaining to production of the of the highly anticorrosive metallic pigments similar to laminas, which may be used in production of the printing ink, plastic materials, cosmetics, the powder coatings and in other branches of industry. The pigments have on their surfaces: the metallic substrates similar to the laminas and treated with the compounds of the phosphoric acid and-or the compounds of the boric acid; one or more layers of the coatings consisting of one or more hydrated oxides of the metals of one or more metals selected from the group, which includes silicon, aluminum, zirconium, titanium and tin. On the basis of the highly corrosive metallic pigments similar to laminas it is possible to produce the interferential colored pigments. The invention allows to increase the anticorrosive resistance of the metallic pigments at the expense of saving without the faults of the initial surface smoothness of the similar to the laminas metallic substrates, to increase the homogeneity and density of the layers of the hydrated oxides of the metals.
EFFECT: the invention ensures the increased anticorrosive resistance of the metallic pigments, saving the initial surface smoothness of the similar to the laminas metallic substrates, the increased homogeneity and density of the layers of the hydrated metals oxides.
40 cl, 9 ex, 4 tbl, 8 dwg
FIELD: priming compositions for protection of metal surfaces working under atmospheric conditions against corrosion; application of primers and coats.
SUBSTANCE: proposed primer-enamel paint includes the following components, mass-%: 40.0-60.0 of epoxy diane resin,; 5.0-15.0 of 50-% polyvinyl acetate dispersion and 0.2-2.0 of synthetic oligopiperylene rubber used as film-forming agents, 0.03-0.1 of polyoxyethylene alkyl phenol ester used as surfactant; 2.0-5.0 of chromium (III) oxide, as well as 2.0-5.0 of aluminum hydroxide and 2.0-5.0 of cardinal red used as anti-corrosion pigments, 8.0-12.0 of polyethylene polyamine used as hardening agent, 0.3-0.7 of dibutyl phthalate used as plasticizing agent, 1.0-10.0 of butyl cellosolve used as cosolvent, 0.01-1.0 of orhto-phosphoric acid used as modifying additive, water, up to 100.
EFFECT: improved quality of coat; enhanced resistance to oils, gasoline, lubricating and cooling fluids and aggressive media.
2 tbl, 16 ex
FIELD: protective materials.
SUBSTANCE: invention relates to compositions used for applying covers. Composition contains zinc and water glass - potassium water glass as a binding agent with silicate modulus 4.8-5.3 or mixture of sodium-lithium water glass with silicate modulus 3.8-4.2 comprising the following components: soluble sodium silicate, technical lithium hydroxide, fumed silica, drinking water and ferrophosphorus. Invention can be used for protection of ferrous metals against corrosion with zinc-filled compositions. Invention provides improving anticorrosive and antifriction properties, enhancing wear resistance, electric conductivity, durability against cracking in drying, enhanced adhesion to metal, welding capacity, strength at impact.
EFFECT: improved and valuable technical properties of composition.
FIELD: protective coatings.
SUBSTANCE: invention relates to undercoat for metallic substrates designed for manufacturing articles and for applying top coating layers. Undercoat comprises silicate binder containing aqueous silica sol having SiO2/M2O molar ratio at least 25:1, wherein M represents sum of alkali metal ions and ammonium ion, silica particles having average size above 10 nm. Binder may further contain insignificant amount of alkali metal silicate. Content of solids in undercoat ranges between 20 and 40% (v/v) and volume ratio of pigment concentration to critic concentration thereof is below 1. Undercoat contains following proportions of components aqueous silicate sol as binder having SiO2/M2O molar ratio at least 25:1 and pH value between 9.5 and 11, wherein M represents sum of alkali metal ions and ammonium ion and silica particles are optionally modified with aluminum oxide and have average diameter 10-16 nm; 10-55% zinc and/or zinc alloy powder based on the weight of dry film having average particle size between 2 and 12 μm; 0-35% organic resin based on the weight of dry binder; and 0-30% organosilicon finishing material. Coating may contain zinc-free pigment(s) and filler increasing storage life time of undercoat. Method of applying undercoat onto steel substrate comprises preparing undercoat using silica sol, whose pH is adjusted to 9.5-11, and depositing undercoat onto steel substrate.
EFFECT: increased hardness and wear resistance, and enabled deposition of corrosion-resistant coating without blistering.
15 cl, 10 tbl, 14 ex
FIELD: corrosion protection.
SUBSTANCE: invention relates to anticorrosion compositions for metallic parts, in particular to utilization of MoO3 as agent enhancing anticorrosive properties of composition for anticorrosion coating based on dispersed metal, containing zinc of zinc alloy in aqueous phase (30-60% water in dispersion) and containing binding agent. Compositions for anticorrosion coating of metallic parts are disclosed containing such corrosion inhibitor (MoO3); at least one dispersed metal selected from group composed of zinc, aluminum, chromium, manganese, nickel, titanium, and alloys thereof; organic solvent; thickening agent; silane-based binder; optionally sodium, potassium, or lithium silicate; and water in amount from 30 to 60% by weight. Disclosed are also anticorrosion coating and metallic substrate with deposited anticorrosion coating prepared from above-defined composition.
EFFECT: improved resistance of composition to salt fog action.
22 cl, 2 dwg, 6 tbl, 3 ex
FIELD: protective materials.
SUBSTANCE: invention relates to a method for preparing priming coat for steel that is designated for assembly and applying upper coat. Steel in grounded with priming coat comprising a silicon dioxide-base binding substance containing silicon dioxide aqueous sol stabilized with aluminum oxide and, optionally, small amount of alkaline metal silicate. Indicated binding agent shows the mole ratio SiO2/M2O = at least 6:1 wherein M means the total amount of alkaline metal ions and ammonium ions. After drying the priming coat up to disappearance of stickiness in weal touch by a finger it is treated optionally with a solution that enhances the strength of the priming coat film.
EFFECT: improved and valuable properties of coat.
12 cl, 7 tbl, 21 ex
FIELD: chemistry, in particular coating compositions, dyes and colorings.
SUBSTANCE: claimed composition includes resin with curing agent in combination with metal powder and stabilizing additive. More particular composition contains polyester resin or epoxy resin, 40-80 mass % of aluminum, iron, bronze, brass or copper powder with particle size of 25-250 mum, and as stabilizing additives at most 5 mass % of feltproofing additive and at most 20 mass % of thixotropic additive. Composition has high storage stability and useful for coating of any geometry surface.
EFFECT: coatings of high heat conductivity and thickness applicable for mechanical operation.