Wear-resistant coating material

FIELD: chemistry.

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.

3 cl

 

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.



 

Same patents:

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EFFECT: obtaining of metal product from alloy on the basis of copper, tractable by turning, cutting or rolling.

14 cl, 5 tbl, 4 ex

Brass // 2347832

FIELD: metallurgy.

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.

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1 tbl

FIELD: metallurgy.

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1 tbl

FIELD: metallurgy.

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1 dwg, 1 tbl

FIELD: metallurgy.

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1 tbl

FIELD: metallurgy.

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.

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1 tbl

Enduring brass // 2337983

FIELD: metallurgy.

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EFFECT: brass endurance increasing.

1 tbl

FIELD: metallurgy.

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EFFECT: alloy hardening.

1 tbl

FIELD: metallurgy.

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9 cl

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9 cl

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2 tbl, 8 ex

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2 tbl

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5 cl, 1 tbl

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2 dwg, 8 ex

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40 cl, 9 ex, 4 tbl, 8 dwg

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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.

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1 tbl

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.

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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

Coating composition // 2245893

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.

1 tbl

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