A method of manufacturing a wire

 

(57) Abstract:

Use: for the manufacture of wire. Creature: are rolling tape and cutting into shapes rectangular, rounded edges. Before rounding edges can weld multiple pieces. 1 C. p. F.-ly, 1 table.

The invention relates to the manufacture of wire.

A known method of manufacturing a long rod type wire, which make the fabrication preform and the drawing of this procurement fileref different configurations.

Features a method of manufacturing a wire of metallic materials by manufacturing blanks for what produce rolling tape workpiece, cutting it on a square or rectangular illumination of the workpiece, the welding of the joint is square or rectangular blanks, fillet the edges of a square or rectangular blanks and dragging it to the desired size.

The table below shows examples of the method of manufacturing a wire.

The proposed method of manufacturing a wire improves the performance of the manufacturing process of the wire, to reduce energy consumption, reduce bisweswar the t obtain all rolled billet.

1. A method of MANUFACTURING a WIRE of metallic materials by harvesting and further drawing of the workpiece, wherein the workpiece is obtained by rolling the tape, the longitudinal cutting of rectangular cross section of the billet and round off their edges.

2. The method according to p. 1, characterized in that before rounding edges produce a butt weld multiple pieces.

 

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FIELD: equipment for working wire at process of making it, possibly changing contour of wire cross section, for example for rounding ribs of tetrahedral wire.

SUBSTANCE: wire production line includes multi-row disc shears for slitting coiled material; unit for working wire ribs; apparatus for plastic working of wire in the form of rotor with axial opening for wire. Said apparatus is mounted with possibility of rotation around wire from drive unit of rotor. Line also includes at least one pair of rolls mounted in rotor with gap for passing wire. Said rolls are mounted with possibility of rotation from drive unit of rolls in direction of wire feed. One roll is cylindrical, other roll has working protrusion with cylindrical surface or several such protrusions mutually spaced by intervals.

EFFECT: possibility of producing in line thin and super-thin wire with low tearing.

2 dwg

FIELD: plastic working of metals, namely processes for manufacturing rods of titanium alloys used, for example for manufacturing fastening parts.

SUBSTANCE: method comprises steps of hot rolling billet formed of ingot; etching formed rod, subjecting it to vacuum annealing, daring, subjecting drawn rod to air annealing for two stages and mechanically working for final size. In first variant of invention air annealing is performed at first at temperature 650 - 750°C for 15 - 60 min at cooling in air till 20°C and then at temperature 180 -280°C for 4 - 12 h at cooling in air till 20°C. According to second variant of invention air annealing is realized at first at temperature 750 - 850°C for 15 - 45 min at cooling in furnace till 500 - 550°C and then cooling in air till 20 °C.

EFFECT: homogenous structure along rod section, increased rupture limit strength and percentage elongation, lowered labor- and power consumption.

2 cl, 1 tbl, 2 ex

FIELD: metallurgy.

SUBSTANCE: device includes heated container, screw with drive and two rolls with similar diameters one of which is provided with groove, and the other one is provided with projection, which form closed pass at the outlet of which a matrix with hold-down device is installed. Between container and rolls there located is antechamber having inner cavity with variable cross section and consisting of section of rectangular cross section the dimensions of which do not exceed the pass height as to the height at cross point of maximum diameters of roll with groove and roll with projection, and as to width they correspond to width of closed pass, and section of conical cross section, the minimum sizes of which coincide with sizes of section of rectangular cross section, and maximum diameters at the boundary with container are determined with diameter on the basis of the following: where D - diameter of antechamber at the boundary with container; b - width of closed pass; hmin - height of closed pass in the smallest cross section.

EFFECT: use of the device allows improving the quality of items owing to improving mechanical properties and enlarging manufacturing capabilities.

2 cl, 2 dwg, 1 tbl

FIELD: metallurgy.

SUBSTANCE: invention relates to metallurgy, and namely to methods for obtaining high-strength and high-viscosity fasteners of any structural parameters with and without a thread. The method for obtaining fasteners from low-carbon alloyed steel of 15Kh3G3MFT type involves hot plastic deformation of an ingot of low-carbon steel so that a rod is obtained with further cooling in the air, heat treatment at temperatures of complete austenisation with accelerated cooling, cold plastic deformation using die blocks, and upsetting. In order to perform martensitic hardening, accelerated cooling is performed in the air from temperature of hot plastic deformation. After accelerated cooling in the air is completed, cold plastic deformation is performed with degrees of 55-60% by a method of radial forging with strikers arranged uniformly around the rod and forming at closure an inner surface of a conical profile, thus forming a detachable die block, and a rod of the specified diameter of the workpiece of the fastener is obtained. After that, heat treatment is performed by accelerated heating for hardening with austenisation at the temperature of 850-1000°C by charging the workpiece into a hot furnace with air atmosphere; then, accelerated cooling is performed so that a structural state of packet nanomartensite is obtained simultaneously with upsetting of the workpiece in austenitic state so that a head for bolts is obtained or without any upsetting so that the specified structural parameters of a fastener are obtained.

EFFECT: invention provides simultaneous improvement of a set of mechanical properties (strength, reliability and relaxation resistance) of fasteners; enlargement of a field of use of systemic low-carbon alloyed steels.

1 tbl, 2 dwg

FIELD: metallurgy.

SUBSTANCE: workpiece is arranged in two supporting and moving supports; tensile and compressive stresses are created by movement of the workpiece through a tool with creation of an electroplastic effect by using pulse or direct current. As the tool, a die with equal cross channels is used, and as supports supporting and moving the workpiece and at the same time as a source of pulse or direct current, reversible line motors are used. Tensile and compressive stresses are created with a combination of force action directions; for that purpose, reversing of line motors is performed, and the value of created stresses is controlled by variation of the value of forces developed by the motors.

EFFECT: improving mechanical properties of metal due to formation in it of fine-grained equiaxial structure.

4 dwg

FIELD: metallurgy.

SUBSTANCE: method of thermomechanical processing of rods from biphase titanium alloys with a molybdenum equivalent of 3.3 to 22% includes hardening of the rod and its cold deforming. Before hardening, the rod is subjected to hot deformation at the temperature in the range of 500°C through Tpt-20°C with the axial texture β-phase <110> with a pole density of, at least, three. Hardening of the rod is carried out at temperatures ranging from 720°C to Tpt followed by a cold deformation along the axis of the rod at the temperature of not more than 300°C and with a relative elongation of 1 to 30%, where Tpt - the temperature of the polymorphic transformation of the alloy.

EFFECT: alloy is characterized by a low thermal coefficient of linear expansion at high strength and satisfactory plasticity.

1 dwg, 2 tbl, 1 ex

FIELD: metallurgy.

SUBSTANCE: method includes formation of a metal shell of U-shaped profile, filling of U-shaped profile of metal shell with filler and squeezing of movable metal shell with filler. Pure calcium melt is used as filler flowing out of crucible at temperature of 900-1000°C, which fills the metal shell, after the filling the longitudinal edges of U-shaped profile of tubular metal shell are squeezed overlapped with subsequent cooling, at that the filling with melt, formation of squeezing and cooling of tubular shell is carried out under inert atmosphere of argon.

EFFECT: high content of active calcium in solid monolithic state without oxygen and increased filling factor, reduced consumption of wire required for treatment of specified amount of metal.

2 cl

FIELD: manufacture of bimetallic sheets and strips of steel clad with phosphorus stannate bronze.

SUBSTANCE: method comprises steps of assembling pack of layers of steel and bronze copper-plated at both sides; cladding pack by cold rolling at reduction degree 50 -70 %; heat treatment of rolled pack; determining thickness of copper layers of copper - plated bronze according to condition providing thickness of copper sub-layer in ready bimetal no more than 60 - 80 micrometers; making bimetal according to technological modes of equipment used for cold rolling of bimetal such as steel - alloy AO 20-1; heat treatment at temperature range 610 - 630 C in gas-shield atmosphere.

EFFECT: enhanced quality of bimetal, enlarged manufacturing possibilities of rolling equipment.

4 cl, 2 ex

FIELD: metallurgy, namely production of double-layer sheets having basic layer of carbon, low alloy or alloy steel and cladding layer of corrosion resistant steel and designed for using in oil production, chemical and other industry branches where combination of corrosion resistance and high mechanical properties is needed.

SUBSTANCE: method of producing double-layer hot rolled sheets with cladding layer of corrosion resistant steel comprises steps of producing double-layer blanks by electroslag surfacing; rolling double-layer blanks to sheets. According to invention electroslag surfacing is realized with use of consumable electrodes of corrosion resistant steel containing, mass %: carbon, 0.02 - 0.12; silicon, 0.2 - 0.8; manganese, 1.3 - 2.5; phosphorus,, no more than 0.040; sulfur, no more than 0.015; chrome, 20 -23; nickel, 10 -14; niobium, no more than 1.5; nitrogen, no more than 0.04; iron and inevitable impurities, the balance. Minimally admissible content of niobium is determined according to carbon content with use of expression: (Nb) = 10(C) where (Nb) - content of niobium in steel of cladding layer, mass %; (C) - carbon content in steel of cladding layer, mass %. Double-layer blanks are stepwise heated for rolling: at first they are heated in furnace at temperature 650 -1000°C for total time period of presence of blanks in furnace (including heating and soaking)τ1 min ≥ 0.1 h where h - thickness of double-layer blank, mm. Then blanks are heated till temperature 1160 -1280°C together with furnace for total time period of heating and soaking τ2 min ≥ 0.9 h where h - thickness of double-layer blank, mm. At rolling process rolled pieces are slightly cooled from 1070 ±20°C to 1030±5°C without deformation of metal in such temperature range. Rolling process is terminated at temperature no less than 960ºC.

EFFECT: enhanced strength and integrity of layer joining, improved quality of cladding layer surface at keeping corrosion resistance and mechanical properties of double-layer sheets.

1 tbl, 6 ex

FIELD: manufacture of sheets of aluminum and low-strength aluminum alloys with thickened cladding of high-strength aluminum alloys.

SUBSTANCE: method comprises steps of separately heating before assembling pack, ingots of aluminum or low-strength aluminum alloys and aluminum-clad plane plates; heating ingots till temperature consisting 0.45 - 0.56 of melting temperature of aluminum and heating aluminum-clad plane plates till temperature consisting 0.72 - 0.76 of said temperature; rolling assembled two-layer or three-layer packs according of multi-pass schedule at deformation rate (0.02 - 0.4) 1/s and at reduction degree 5 - 10% during first three passes. The whole process is realized in industrial mills for hot rolling.

EFFECT: enlarged assortment of clad materials on base of aluminum or low-strength aluminum alloys having thickened cladding of high-strength aluminum alloys produced with use of hot rolling of packs.

1 ex

FIELD: plastic metal working, possibly manufacture of flat bimetallic blanks of wide assortment by thickness and relation of layer thickness values.

SUBSTANCE: method comprises steps of making sub-layer on base of aluminum with single-side or double-side cladding layer of easy-to-melt metal; assembling pack of blank of steel, titanium, copper or aluminum and blank of aluminum or its alloy with sub-layer between them; further deformation of pack. According to invention blank of aluminum or its alloy is preliminarily heated till temperature consisting 0.68 - 0.76 of aluminum melting temperature. Pack is deformed by upsetting at reduction along height 10 - 30% and at deformation rate in range 0.005 -0.75 1/s for period of mutual contact of layers no less than 5 s while providing condition of melting easy-to-melt coating of sub-layer in contact zone. Sub-layer may have single-side cladding layer. Before assembling pack, sub-layer is applied by rolling process onto blank of steel, titanium or copper at easy-to-melt layer turned outside. Sub-layer may have double-side cladding layer. In such case pack is assembled of blanks of aluminum or its alloys and sub-layer is placed between them. Invention provides conditions for inter-layer liquid friction, for creating contact deformations, for breaking oxide film at side of aluminum blank, for occurring reliable inter-layer connection at wide range of thickness values and relation of layer thickness value.

EFFECT: enlarged assortment of flat bimetallic blanks by their thickness and relation of layer thickness values.

3 cl, 2 dwg

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