RussianPatents.com
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Plowshare of increased resistance to abrasive wear. RU patent 2450496. |
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FIELD: agriculture. SUBSTANCE: invention may be used in the manufacture of plowshares of plows for different purposes. Increasing resistance of plowshares to abrasive wear is achieved by welding on metal of high hardness (60 HRC) on the width of 7-8 mm along the landward edge and the blade part of the edge in the form of chisel and welding with deep penetration of the same alloy at the lower part of the edge at a distance of 60-80 mm. The rest is reinforced with filler by welding of rollers of width of 4-5 mm with a spacing of 30 mm by electrodes for welding carbon steels perpendicular to displacement of soil. EFFECT: plowshare has even wearing capacity of the entire surface of the edge. 1 dwg
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Method of producing ice cast-iron cylinder head valve seat or reconditioning them by arc deposition / 2448825 Invention may be used in reconditioning or producing internal combustion engine valves. Machining is carried out after valve surface cleaning and flaw detection. Seat is made by arc deposition on valve seat surface. Nickel sublayer is built up by short arc of forward polarity current in atmosphere of welding gas with forging the built-up bead at the rate not allowing metal chilling. Surface with nickel deposition is subjected to machining. Working layer of austenitic heat-resistant steel is deposited by consumable electrode with reverse polarity current and forging of every bead at the rate not allowing metal chilling. Seat working surface is subjected to finishing. |
Ferromagnetic charge for arc pad welding machine parts made from iron-carbon alloys / 2448823 Invention relates to machine building and can be used to restore machine parts made from alloyed steel and cast iron. The ferromagnetic charge for arc pad welding machine parts from iron-carbon alloys, which contains carbon, ferrotitanium, ferrochromium, ferrovanadium, electrode marble, fluorpar, silicocalcium, copper powder and iron powder, additionally contains ferrovanadium and copper powder. To ensure stable arcing at low current (reducing the level of welding deformations and stress) and improve magnetic properties of the mixture, magnetic and nonmagnetic components of the charge are mixed on liquid sodium glass. |
Method of reconditioning tillage equipment working tools with complex shape / 2443531 Invention may be used in reconditioning tillage equipment working tool surfaces with complex shape. Worn-out area is prefilled by electrodes made from wear resistant material to perform closing by fusion in one pass by electric arc manual or semiautomatic method to ensure maximum possible tracing of working surface. |
Method of increasing life of tillage equipment working tools / 2443524 Invention may be used in reconditioning tillage equipment working tool surfaces. Rolls are welded on perpendicular to axis of beam-like wear, spaced apart for 20-30 mm to produce spacing between them. Roll height does not exceed the level of working surface of the part being reclaimed. Said spacing is filled in operation by soil that acts as anti-abrasive medium. |
Method of reconditioning center hoes of tillage row-crop cultivators / 2443523 Invention may be used in reconditioning tillage equipment working tool surfaces. Metal stock is formed in point area and along blade length by electric arc deposition by electrode to produce buffer stock of built-up metal that allows recovery of rated sizes of hoes. Building-up may be carried out both manually and mechanically by electric arc deposition. Hoe is drawn out by hot deformation using forming mandrel that follows hoe point and blade shape. Further hardening is performed by quenching. In buffer metal building-up and drawing-out, thermal processes occur to bring about structural components that increase hardness of reconditioned zone and facilitate increasing resistance to abrasive wear. |
Procedure for production of built-up coating on blade body of turbo-machine / 2434973 Strips of alloyed metals are built-up in direction of lengthwise generatrix of blade body ensuring gaps between built-up strips at least on part of blade body and forming layer. As built-up metal there are used alloys on base of nickel with Co, Cr, Al, Mo, W, Ti, Y or their combination. Further, a blade body is mechanically processed ensuring its specified geometry. Successive thermal treatment corresponds to thermo-cycling. |
Turbo machine labyrinth seal repair / 2432244 Invention relates to recovery of turbo machine worn-out labyrinth seals and may be used in repair of various assembly units and parts with such seals, for example, vanes, carcass assembly in aircraft industry, power generation equipment and other machine building branches. Said seals are building-up welding with welding head and filler wire. Welding roll is produced on inclining welding head with filler wire toward part section that features higher heat dissipation. Note here that inclination of welding head with filler wire relative to labyrinth seal knife edge is set between planes of their symmetry to make 8-10°. |
Surfacing method of wear-resistant coatings / 2429954 Surfacing is performed on the flux layer with wire from aluminium or its alloys. Flux containing chrome oxide and cryolite is used with the following component ratio, wt %: chrome oxide (III) 25-35, cryolite 65-75. Surfacing is performed in shielding gases in the modes allowing to obtain the coating containing 10-40 wt % of aluminium. |
Method of building up antifriction layers / 2427455 Invention may be used in building up antifriction layers on surfaces of parts made from titanium alloys, particularly, ship fixtures. Automatic argon-arc building up of "ПТ-7М"-grade titanium alloy wire at built-up metal temperature of 1500-1550°C and roller pressure of 80-100 N. |
Flux material for electroslag welding or facing with restoration of components or electroslag remelting / 2424091 Invention relates to welding industry, particularly to electroslag welding or facing and can be used to restore components with high mechanical wear, as well as for producing special quality tool steel via electroslag remelting. The flux material contains a scheelite concentrate as a doping and slag-forming component, with the following content of basic components, wt %: tungsten oxide 45-72, iron oxide 10-25, manganese oxide 2-10, silicon oxide 3-8, graphite as a reducing agent, calcium fluoride as a fluxing agent, baddeleyite concentrate as a modifier, with the following content of basic components, wt %: zirconium oxide 92-96, silicon oxide 4-8, with the following ratio of flux components, wt %: scheelite concentrate 65-72, baddeleyite concentrate 0.5-3.0, graphite 14-18, calcium fluoride 16-20. |
Method to control quarantine weed mountain bluet and device for its implementation / 2444878 Group of inventions relates to agriculture. In the method the roots of the weed are undercut with shallow tool for deep processing. Deep processing is carried out with a chizel tool with simultaneous continuous undercutting of roots at a depth of 35-40 cm and crushing them in the arable horizon to the size of 10-15 cm. The device comprises a frame with racks installed on it, each of which has a shoe with a contact chisel. Along the rack the holes are made through which bolts and an eccentric a pair of cutting wings are fixed. Pairs of cutting wings are installed in several rows spaced 10-15 cm, and the lower pair of wings operates at a depth of 35-40 cm. |
Method of plasma-jet hard-facing of narrowing side part of earth cutter tip at side of landward edge / 2421956 Invention relates to the field of agriculture, in particular, to agricultural machine building, and may be used in various cutters, knives, ploughshares, mouldboards of implements for soil treatment. A powder of doped hard alloys with addition of aluminium is applied using plasma-jet hard facing onto the rear side of the earth cutter tip and along the whole thickness of the base at the landward edge of the ploughshare. Plasma-jet hard-facing is carried out simultaneously with operation of the main and auxiliary arches. The tip of the earth cutter or plasmatron is displaced in transverse direction towards the rear surface is carried out with the speed of VD, which is determined by the following ratio: VD = (0.95÷1.05) VF · tg i, where VD - speed of transverse tip or plasmatron displacement; VF - linear speed of tip facing; i - angle of earth cutter tip blade sharpening. The thickness of facing is defined by the following ratio: h = α+(0.11÷0.13)·δ, where h - thickness of faced layer; δ - width of side part of tip; α - 1 mm. The facing doped powder is complemented with 3÷5% of aluminium powder by weight. |
Method to recover plowshares / 2413601 Invention relates to machine building and repair of agricultural machinery, particularly, to recovery of plowshares tips. In compliance with this invention, steel cover element is cut out to be welded to worn-out surface of plowshare front part. Also, reinforcing rolls are welded on surface of possible areas wherein star wear is expected. Said steel cover element represents a pre-sharpened plate with thickness that corresponds to that of recovered plate, but not over 6 mm, that repeats geometry of chisel-type share which is cut out from hardened strip of secondary steel. Note here that width of the plate extension corresponds to shape chisel width. Welding is carried out on arranging plate lower edge parallel to plow blade, while front edge is aligned with landward edge shape. |
Method for manufacturing of tillage point (versions) / 2397849 Method may be used to manufacture lancet points of tillage tools. When manufacturing welded point, wings are welded to form V-shaped edge at the side opposite to welded seam, with length of 30-70 mm with opening angle of 30-55°, and it is filled with filler charge. In stamped point U-shaped groove is formed along axis of symmetry on outer side of nose portion, with length of 15-30 mm, and filler charge is placed in it. Induction welding is carried out with simultaneous heating of point wings for tempering provided that hardness of welded metal by 2-8 units according to HRC compared to the main metal. |
Flat-cutting work tool for soil cultivation / 2366139 Work tool includes blade with areas of reinforcement layer spread discretely over the external blade surface and directed at an angle against cutting edge. The other blade side carries additional reinforcement layer in similar pattern. Reinforcement layer areas at the other blade side are located in projected points of discrete gaps in reinforcement layer areas at the external blade side. Reinforcement areas are made in the form of stripes and positioned on shovel blade at ±12° angle against drag force direction. |
Earth board reworking method / 2344913 Method envisages indentation of a groove on the earth board surface that becomes eventually filled with soldering alloy with ceramic-metal plates placed thereupon and additional soldering alloy and flux agent layers applied at the points where the plates abut the groove edge. After that one applies heat to the plates till the soldering alloy melts down and places the board with the plates soldered onto it in a thermally insulated tank to cool down to the ambient temperature at a rate of 4°C/min. The method provides for usage of L63 soldering alloy and FK-250 flux agent. The plates heating is done with the help of a hydrogen-oxygen flame burner, the gas mixture pressure amounting to 0.5 MPa and the burner nozzle edge positioned at a distance of 50 mm from the plate surface. |
Method of wear resistance increase of ploughshare / 2334384 Electrode material is distributed over the most wearing part of the working surface by U-shape rollers or rollers having the shape of semiellipse. Beading is carried out continuously followed by fast cooling of the edge in water in order to form hardening structure. |
Method for making working organs of cultivators / 2309987 In order to improve wear resistance of working organs of tilling cultivators made of steel 60C2A, after imparting desired shape to working organ subjecting it to preliminary heat treatment at hardness 40 - 48 HRC; then surfacing stripes onto working surface of working organ by means of electrode and performing chemical-and-heat treatment by means of nitrogen for providing hardness of working surface 55 - 62 HRC. Invention provides increased by 1.5 times wear resistance of working surface of working organ. |
Method for making working organs of cultivators / 2309987 In order to improve wear resistance of working organs of tilling cultivators made of steel 60C2A, after imparting desired shape to working organ subjecting it to preliminary heat treatment at hardness 40 - 48 HRC; then surfacing stripes onto working surface of working organ by means of electrode and performing chemical-and-heat treatment by means of nitrogen for providing hardness of working surface 55 - 62 HRC. Invention provides increased by 1.5 times wear resistance of working surface of working organ. |
Method of wear resistance increase of ploughshare / 2334384 Electrode material is distributed over the most wearing part of the working surface by U-shape rollers or rollers having the shape of semiellipse. Beading is carried out continuously followed by fast cooling of the edge in water in order to form hardening structure. |
Earth board reworking method / 2344913 Method envisages indentation of a groove on the earth board surface that becomes eventually filled with soldering alloy with ceramic-metal plates placed thereupon and additional soldering alloy and flux agent layers applied at the points where the plates abut the groove edge. After that one applies heat to the plates till the soldering alloy melts down and places the board with the plates soldered onto it in a thermally insulated tank to cool down to the ambient temperature at a rate of 4°C/min. The method provides for usage of L63 soldering alloy and FK-250 flux agent. The plates heating is done with the help of a hydrogen-oxygen flame burner, the gas mixture pressure amounting to 0.5 MPa and the burner nozzle edge positioned at a distance of 50 mm from the plate surface. |
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