echanical metal-working without essentially removing material; punching metal (B21)

	Device for reeling and flanging of hollow parts Movable mechanism with folding roller, mandrel with drive and props with crossbar mounted thereat are arranged at the bed. Besides, there are working roller with two independent drives and hydraulic cylinder with gas chamber arranged at said crossbar to develop constant force to be applied by working roller to workpiece. Note here that one of said independent drives controls said crossbar while another one initiates to turn of said props.
	Tube expander Invention relates to metal forming, particularly, to pipe expanders. At least one drive is mounted at the frame to push or pull the expander core through the pipe equipped with electrically driven drum with band or cable guide extending horizontally from drum outlet forward to pipe. Note here that said drum is located between two side plates of said drive unit and comprises bush and ring guide. Note heat that said bush comprises drive gear and at least two driven gears arranged inside the rim in bush and engaged therewith. Note here that said ring guide is composed of bearings arranged in circle between drum sides and along outer rim of said sides.
	Low-waste two-row cutting of blanks from strip (versions) Invention relates to metal forming, particularly, to cutting of blanks. First, the pattern of two-row staggered arrangement at the strip without webs of one configuration of blanks of design shape in the first row and the same or other configuration of design shape blanks in second row are designed to define the strip width. Then, one blank is cut by male dies and top blades by design contours of blanks with actual contour from top row, male dies and blades being mounted at the first die top position at strip and top blades feed pitch from vertical axis of previous blank in top row. In compliance with another version, second blank is cut with actual contour from bottom row. Then, for cutting of the next one or two blanks, strip or cutting die are displaced in crosswise direction by such magnitude that make male dies and top blades extend beyond the strip edge. The strip is fed by pitch in lengthwise direction. At die first bottom position, one blank with actual contour from bottom row is cut to design contours of blanks at strip feed pitch by bottom blades. Similarly, strip or cutting die are displaced downward in crosswise direction, strip is fed by pitch in lengthwise direction to automatically repeat cycles of cutting of one or two blanks at every pitch of equipment.
	Production pf long-length sandwiched bimetallic large-diameter pipes that feature longer life in aggressive media for transfer of hydrocarbons with higher content of sulfur Pipe billets are produced by winding sandwiched sheet-strips from steels 08X18H10T and "17ГСУ" on revolving drum-reel and subsequent transverse butt welding of pipe billets. Note here the sheet edges are milled at 45 degrees and butt-jointed by submerged arc welding to rated depth of sheet wall depth. Welds at outer surface of sandwiched pipes are shifted relative to welds on inner surface through specified value. Note here that depth of said sheets-strips are selected subject to operating conditions of bimetallic pipes.
	Production of rerolled "426×34×10500±250" mm pipes at pru 8-16'' with pilger mills from billets of titanium alloy gr 29 Prevention relates to production of rerolled "426×34×10500±250" mm pipes at PRU 8-16'' with Pilger mills from billets of titanium alloy GR 29. Ingots are cast in vacuum arc furnace and subjected to forging and turning to billets. Central hole is drilled in the billet to be schooped with Al2O3, heated in continuous furnaces to 1150-1180°C at the rate of 2.8-3.2°C/min with turn-over in 18-20 minutes through α=(190±10)°, held at ductility temperature at 4-3 openings of the furnace first zone for 25-30 minutes and turned over from 3rd opening into furnace pit. Billet is pierced at helical rolling mill to sleeves and rolled at Pilger mill to rerolled pipes. Process wastes are cut off by hot cutting saw and straightened at six-high cluster mills in two-three passes to curvature not over 6 mm over pipe length.
	Method of piercing of ingots and billets weighing from 3 to 10 tons to sleeves at helical rolling mill Proposed method comprises heating of ingots and billets to ductility temperature and their transfer on roll-table. They are fed to mill trough and fed to working zone. The latter is composed by working and guide rolls or blades. Then, piercing is made at short mandrel as well as rolling. Ruled out formation of "triangles", higher efficiency and lower metal input are ensured by executing said piercing at guide and working rolls or blends with axes located in vertical plane. Ingots-billets are fed to the mill by lifting mechanism while to working zone they are fed by gravity. Ingots-billets are pierced to make their end approach piercing cone with dam. At rolling, they are stretched by their weight. Note here that produced sleeves are fed to vertical roll-table that changes over to horizontal roll-table.
	Production of rerolled long-sized pipes from iron-nickel- and nickel-based alloys at pru with pilger mills Hollow ESR ingots-billets are cast, heated to ductility temperature at Pliger mills on taper mandrels with the angle of generatrix inclination of mandrel axis α=2.7-3.1 minutes. Roll ring groove has reducing, squeezing and finishing sections, section of lengthwise taper section and idle section that make the roll pass. Finishing section has tangential tapers with 25-28° angles of oval, central parts of which being limited by radii equal to 1.10-1.12 of hot-rolled pipe radius. Said ESR ingots-billets at cast to different sizes with diameter-to-wall depth of 4.4-6.0. Pipe rolling at Pilger mills is performed with rolling-out µ of 1.6-6.2, larger sizes being related to smaller diameter pipes.
	Production of seamless cold-formed oil-well tubing sized to 114,3×6, 8×9000-10700 mm from corrosion-resistant alloy of "ХН30МДБ-Ш" grade Hollow ingots sized to 470×110×2700 or 430×105×2700 mm are ESR cast. Said ingots are turned and bored to hollow ingots-billets sized to 460×100×2700 and 420×95×2700 mm. Said ingots-billets are heated to ductility temperature and rolled at Pilger mill on taper mandrels to rerolled hot-rolled pipes. The latter are turned, bored and rolled at mill "ХПТ" to commercial oil-well tubing sized to 114.3×6.88×9000-10700 mm. Use of hollow ESR ingots allows reducing the metal input.
	Pipe cold roll mandrel Proposed mandrel comprises shank and working section with cross-section decreasing from the shank. Mandrel is increased owing to its production from steel of grades that features higher hardenability compared with that of steels "ШХ15" and "50ХФА". Note here that hardened ply on mandrel surface features depth making at least one third of its cross-section.
	Rolling of 273-428 mm diameter pipes at pru with pilger mills from carbon and low-alloy steels with higher requirements to impact ductility This process comprises heating of billets to ductility temperature, piercing at helical rolling mill to sleeves, rolling of the latter at Pilger mill to pipes, pipes gaging at sizer and air cooling. Billets are made of steel micro alloyed with vanadium from 0.02 to 0.07% and niobium of 0.01 to 0.03%, or titanium from 0.01 to 0.03% and aluminium from 0.02 to 0.05%. Ripe rolling is performed at sleeve feed to straining source of 15-20 mm for pipes with wall thickness of 10-15 mm and 20-25 mm for pipes with wall thickness of 15-20 mm.
	Production and operation of pilger mill composite mandrels for production of large- and medium-diameter hot-rolled pipes Invention relates to production of composite mandrels of Pilger mills. Solid mandrel cores are made from mandrel rejects by their regrinding to produce lock part, working part and guide part. Working part consists of cylindrical and conical parts while guide part is composed of cylindrical part and end cone. Forged billets of EST ingots or billets produced from sound parts of 400-500 mm diameter mandrel rejects from "25Х2М1Ф" steel are heated to ductility temperature and pierced at helical rolling mill to sleeves. Said sleeve is fitted on said prefabricated structure till contact with lock cone to roll-and-knurl the sleeve on cores at Pilger mills. Thermal treatment of composite mandrel billets is carried out to produce 40-50 mm deep sorbite jacket on the surface. Then, said billets are machine to produce composite mandrels.
	Production of seamless hot-rolled pipes sized to 610×28-32 mm from "15Х1М1Ф"- and "10Х9МФБ-Ш"-grade steels at pru 8-16'' with pilger mills for pipelines of boiler unit steam intermediate overheating with higher mechanical properties ESR billets sized to 620x100x1250±50 mm are heated to 1270-1290 and 1190-1210°C and pierced at helical rolling mill to sleeves sized to 650 xvn 390x1610-1740 mm. After cooling and dressing, the billets are heated from cold charge to 1270-1290 and 1200-1210°C and pierced-rolled at helical tolling mill. Billets are rolled at PRU 8-16'' with Pilger mills to commercial pipes sized to 610×28-32×4500-5500 mm, process wastes are cut off by hot cutting saw, straightened, heat treated, etched, dressed, straightened, subjected to ultrasound control and accepted.
	Production of seamless hot-rolled pipes at pru with pilger mills Process comprises heating of ingots-billets to ductility temperature and their piercing at helical rolling mill to taper sleeves with different rolling-outs with subsequent rolling at Pilger mill to pipes at constant feed to straining zone and constant rolling-out. Pilger heads are withdrawn from sleeves to cut pipe units to pipe lengths. Process wastes, that is Pilger heads and seed ends, are cut off by hot cutting saws. Fixed feed and ruled out collapse of sleeve rear ends at Pilger rolling are ensured by billets are pierced to sleeves shaped to hollow truncated cone with larger base at sleeve front end and smaller base at rear end. This is done ay increase in rolling-out by smooth convergence of working rolls relative to rolling axis from piercing start to end by regulated magnitude L. Rolling at Pilger mills to pipes is done by feeding the sleeve front ends at constant feed and variable rolling-out so that Pilger heads are formed from sleeve rear ends.
	Production of bimetal "t=279×36" (351×36) mm pipes with inner plating layer from "10ГН2МФА"- and "08x18h10t"-grade steels for nuclear power plant structures Proposed method comprises casting of hollow ESR ingots from "10ГН2МФА"-grade steel to size of 535×vn.250×3100+100 mm. Said ingots are subjected to anodic-mechanical cutting to get equal-length shell ring blanks. Said shell ring blanks are turned to diameter 520±1.0 mm. They are taper-bored in ID, taper small diameter making 257±1.0 mm while its larger diameter makes 265±1.0 mm. Said shell rings are sealed by steel "08Х18Н10Т". Bimetal ingot bottom part are removed to drill the 520±1.0×gr.265±1.0×1550±50 mm through central 100±1.0 mm diameter bore. After boring to 520±1.0×gr.265±1.0×160±1.0×1550±50 mm, bimetal ingots are heated to ductility temperature at pierced at helical rolling mill to sleeves sized to 540×вн.305×1640-1770 mm at 290 mm diameter mandrels. Said sleeves are rolled at Pilger mill in passes 383 mm of 271/272 mm mandrels with carbonaceous jar rings to rerolled pipes sized to 371×50.5×4600-4900 and 446×54×4700-5100 mm. Said rerolled pies are heat treated, straightened, bores and turned to commercial hot-rolled 279×36×4000-4300 mm pipes with plating layer depth of 7±2 mm.
	Roll of pilger mill for rolling seamless hot-rolled 610×28-32 and 630×28-32 mm pipes for pipelines of boiler unit inermediate steam superheating from esr "690×bh590×3300-3500", "700×bh580×3200±50" and "720×bh600×3200±50" mm sleeves and hollow ingots Invention relates to metallurgy and can be used at pipe rolling unit 8-16'' with Pilger mills JSC CPRP. Pilger mill roll comprises working section and idle section of 220 and 140 degrees at 1150 mm diameter barrel. Working part comprises round-cross-section pass with tangential crosswise taper grooves. Pass length consists of the hammer in length of 0.36-0.37 of the total length of working section with angle of crosswise taper groove varying over the hammer length from 32-37 to 20-25 degrees in cross-section of transition to polishing section. Polishing section features the length of 45-0.46 of the entire length of working section. Besides, it features the angle of lengthwise taper groove making 0.19-0.20 of the working section total length. Roll hammer with central angle of 80 degrees, total reduction of sleeves and hollow ingots over diameter from 70 to 80 mm, comprises the pass with crosswise taper grooves decreasing from 35 to 22 degrees. It is divided into three sections with central angles α1=20, α2=25, and α3=35 degrees, with smooth distribution of reduction over diameter.
	Production of 325×13-15 mm seamless hot-rolled pipes for steam boilers, steam pipelines and manifolds of plants with high and superhigh steam parameters of "10Х9МФБ-Ш"-grade steel Proposed method comprises casting the ingots by electric slag remelting. Said ingots are bored and turned to billets sized to 540×360×3200±50 mm. Said billets are heated to 1170-1190°C and rolled at PTU 8-16" with Pilger mill to rerolled pipes of 377×20×15500-16000 mm with rolling-out µ=5.56, diameter reduction of 29.6% and feed of billets to forming source m=17-20 mm. Seed ends and Pilger heads are cut off to cut the pipes to two equal-length pipes. After straightening and heat treatment, rerolled pipes 377×20×7750-7900 mm are rolled at mill "ХПТ" 450 to commercial cold-rolled pipes 325×13×12300-12600, 325×14×11700-12200 and 325×15×11-11400 mm with rolling-outs µ=1.76, µ=1.64 and µ=1.54, respectively.
	Production of 550×25-60 mm seamless hot-rolled pipes for steam boilers, steam pipelines and manifolds of plants with high and superhigh steam parameters from esr ingots of "10Х9МФБ-Ш"-grade steel Proposed method comprises casting of ESR ingots-billets sized to 620×100×1750±50 mm and their heating to 1190-1210°C. They are pierced at helical rolling to sleeves. Sleeves are rolled at Pilger mill to commercial pipes, process wastes, that is, seed ends and Pilger heads cut off by hot-cutting saws. Then, pipes are heat treated, etched, repaired and subjected to ultrasound control. 550×25-30 mm pipes are accepted with diameter allowance of ±1.0% and depth allowance of +15/-5.0% while 550×31-60 mm pipes are accepted with diameter tolerance +1.25/-1.0% and wall thickness allowance of +20/-5.0%. Possibility to use one-size ESR ingots for production of different wall thickness, lower loads at ingots-billets piercing and rolling at PRU 8-16'' with Pilger mills are ensured by that at production of pipes with wall depth of 25-35 mm, 31-45 mm and 46-60 mm, piercing, heating, heat treatment, expansion and rolling at PRU 8-16'' with Pilger mills are strongly specified subject to pipe wall depth.
	Production of large- and medium-diameter rerolling pipes from titanium-based alloy ingots and blanks at pipe rolling unit with pilger mill Invention relates to pipe rolling and can be used at production of rerolling pipes. Sleeves are rolled to rerolling pipes at PRU with Pilger mill, titanium allow stuck to roll body flanges to cut off process wastes, that is, Pilger heads not completely rolled and seed ends. Rerolling pipes are straightened at rolling temperature, turned and bored to commercial or rerolling pipes for further rerolling at cold-pilgering mills. Titanium alloy stuck to roll body flanges is removed by rolling the pipe of given size from carbon steel after rolling of n-amount of titanium-based alloys. Rerolled pipes feature higher surface quality.
	Production of erection sections with cogged edges at tandem stand roll-forming mill Invention relates to metal forming, particularly, to production of erection sections at roll forming mills. Forming is combined with cog shaping at the step of section angle bending at mill first stand by knurling rolls mounted without clearance on one key at upper shaft. At second stand, cog height is increased by knurling rolls free running on the shaft and self-aligning by cogs pre-formed at first stand.
	Production of 530×25-60 mm seamless hot-rolled pipes for steam boilers, steam pipelines and manifolds of plants with high and superhigh steam parameters of "10Х9МФБ-Ш"-grade steel Invention relates to metallurgy, particularly, to pipe rolling. Hollow ESR ingots are bored and turned to hollow blanks sized to 660xvn.380x2100±50 mm, heated to ductility temperature and broached-rolled at cross-rolling mill to sleeves sized to 670xvn.515x3170-3330 mm. At TPU 8-16'' with Pilger mills, sleeves are rolled to commercial pipes sized to 550x31x7100-7500 - 550x45x5400-5700 mm.
	Production and operation of pilger mill composite mandrels for production of large- and medium-diameter hot-rolled pipes Invention relates to pipe rolling and can be used at production of composite mandrels of Pilger mills. One-piece cores are made from continuously-cast billets or profiled special iron from carbon grades of steel. Said core is bored from one end to cut tight-hand thread while bulge shaped to truncated cone with larger base on core end is made at opposite end. Locking parts are made mechanically from mandrel rejects and forged pieces of steel "25Х2М1Ф" or steel resisting the impact effects to cut the thread at the end opposite the lock. Core and lock are screwed together to produce a prefabricated structure. Billets produced by forging or ESR casting are heated to ductility temperature and pierced at helical rolling mill to sleeved with ID larger than large bases of the core truncated cones by 15-20 mm. Said sleeve is fitted on said prefabricated structure till contact with lock cone to roll-and-knurl the sleeve on cores at Pilger mills. Thermal treatment of composite mandrel billets is carried out to produce 40-50 mm deep sorbite jacket on the surface. Then, said billets are machined to composite mandrels.
	Rolling mill temperature control Invention relates to rolling and serves for adjustment of planarity at rolling of aluminium strip or foil. In compliance with this invention, this device comprises pair of working rolls to receive the strip or foil in contact zone between rolls. Besides, it comprises multiple fluid feeders configured to direct said fluid to one or more zones on the surface of at least one roll and heater to heat said one or more zones. Proposed method comprises feeding the cryogenic fluid to one or more zones on roll or rolls surface/surfaces via one or strip or foil feeders. Note here that said zones are distributed uniformly over roll width. One zone or more zones are heated on roll surface by one or more heaters for adjustment of roll radial size over its width.
	Method and device for production of large-sized ribbed panels Invention relates to metal forming and can be used in production of ribbed panels intended for bodies of compartments, bulkheads, wings and other parts of aircraft and spacecraft. Heated blank is strained at the rate of 0.01-10 mm/s, in steps over the sections, with gradual forming of the entire surface. Area of said sections is at least two times smaller than that of said blank. Straining is executed at the device to be secured in die unit for isothermal die forming. Proposed device comprises top and bottom plates, heaters, female die, male dies with cavities shaped and sized to panel ribs and at least two male die holders. The latter displace in guide columns. It includes sliding thrust plates with drive. One male die is rigidly fixed in male die holder. Other male dies are fitted in their holders and spring-loaded and can displace in direction of forming force application.
	Method for pulse rolling of raceway of thrust ball bearing race Mandrel in the form of a hollow arbour is used, it is fitted with deforming elements in the form of balls set in the holes evenly provided at the end face of the hollow arbour. The mandrel is imparted with a periodical pulse load by means of a pulse load hydraulic cylinder in which a striker and a waveguide are installed. A workpiece is fixed at a bearing flange set so that to be able of rotating in respect to the longitudinal arbour axis. Rotational movement is imparted to the workpiece by means of the stem of the static load hydraulic cylinder having screw-shaped splines, being placed in the hollow arbour and passing in the spline hole of the said bearing flange. A helical coil compression spring is installed between the end face of the hollow arbour and the bearing flange.
	Universal mould for shaping sheet part with surface bicurvature Bending in the mould is performed by male die acting on the blank laid on ring female die with working surface shaped to parabola. Male die radius is selected with due allowance for blank material resilience. Extra support is arranged at female die centre, its height being controlled by a set of replaceable washers. Note here that extra support working surface curvature radius exceeds minimum radius of curvature of produced parts with due allowance for their thickness.
	Method of blanking Invention relates to blanking at dies and can be used in production of thin-wall parts. Prior to placing at die, stack of blanks is formed at fitting process shims from top and bottom and between all stacked adjacent blanks to be jointed together by permanent joint. Produced stack is placed at die pad to cut blanks. Then, process shims are removed. Corrugated sheet is used as said process shims Stack of blanks is formed by fitting sheets in every crimps and locking them therein by permanent joint.
	Membrane cargo capacity for liquefied natural gas transportation and storage Invention relates to transport shipbuilding, means for marine freight and storage of liquefied natural gas (LNG) and concerns design of membrane cargo capacity for its transportation and storage. Reservoir for transportation and storage of LNG includes structured thermally insulated shell mounted on carrying structure of freight vessel or capacity. The shell consists of several layers. In this structure, one layer is metal and sealed and contacts with liquefied gas being transferred or stored. The layer contains undulating corrugations. Wave tops and troughs form zigzags. Undulating indents between corrugations on the outside are filled with porous synthetic material or paste based on chopped glass fibre and binding agent.
	Production of seamless hot-rolled pipes sized to 610×28-32×4700-5400 mm from "15Х1М1Ф"- and "10Х9МФБ"-grade steels at pru 8-16'' with pilger mills for pipelines of boiler unit steam intermediate overheating with higher mechanical properties Invention can be used for production of seamless hot-rolled pipes from "15Х1М1Ф"- and "10Х9МФБ-Ш"-grade steels for pipelines of the steam intermediate overheating at boiler units. Hollow ESR ingots are bored and turned to hollow blanks sized to 670xvn.370x1650±50 mm, heated to ductility temperature and broached-rolled at cross-rolling mill to sleeves sized to 600xvn.590x3280-3480 mm. Sleeves are rolled at PRU 8-16'' with Pilger mills to commercial pipes sized to 610x28-32x4700-5400 mm.
	Production of 299×10-60 mm seamless hot-rolled pipes for steam boilers, steam pipelines and manifolds of plants with high and superhigh steam parameters from esr ingots of "10Х9МФБ-Ш"-grade steel Invention relates to metallurgy. This process can be used at PRU with Pilger mills for production of commercial pipes sized to299×16-60 mm, rerolled pipes sized to 377×22 и 325×20 mm for further rerolling to commercial pipes sized to 299×10-15 mm at mill "ХПТ" 450. Proposed method comprises ESR casing of billets, their mechanical processing, that is, turning to billets-ingots and drilling 100±5 mm diameter central bore. They subjected to heating to ductility temperature, piercing at helical rolling mills to sleeves, their rolling at Pilger mills to commercial pipes sized to 299x16-60 mm, heat treatment, etching, straightening, ultrasound control and acceptance.
	Production of 299×10-60 mm seamless hot-rolled pipes for steam boilers, steam pipelines and manifolds of plants with high and superhigh steam parameters of "10Х9МФБ-Ш"-grade steel Invention relates to metallurgy, particularly, to pipe rolling. Hollow ESR ingots are bores and turned to hollow billets sized to 500xvn.320x3200±50 mm. Said hollow billets are heated to 1180-1200°C and rolled at PRU 8-16" with Pilger rerolled hot-rolled pipes sized to 325x15x20300-20700 and 325x18x17600-18300 mm. Process wastes are cut off by hot-cutting saw, hot-rolled rerolled pipes are cut to lengths. The latter are straightened at six-roll straightener and subjected to heat treatment. They are accepted and rolled at CRM 450 to cold-rolled pipes sized to 299x10-15 mm.
	Production of seamless hot-worked boiler and steam line 426×21-70, 465×25-75 and 530×30-75 mm pipes from "10Х9К3В2МФБР-Ш" grade refractory steel for power equipment with steam supercritical parameters Invention relates to metallurgy. Hollow ingots of ESR steel, grade "10Х9К3В2МФБР-Ш", sized to 620xvn.180-260x2100±50 mm, with diameter-to-wall depth ratio D/S=2.8-4.2, are turned and bored to hollow billets sized to 600xvn.200-280x2100±50 mm D/S ratio=3.0-4.6. Said billets are heated to 1190-1210°C, and pierced-bored at helical rolling mill to 600xvn.415-315x3160-2160 mm sleeves. Sleeves are rolled at Pilger mill with rolling-out µn equal to 5.17-2.48 to 426x21-70x13800-4900 mm pipes. Process wastes are cut off by hot cutting saw. Pipes are straightened, thermally processed and etched, and are subjected to ultrasound control and acceptance.
	Production of seamless hot-rolled pipes at pru with pilger mill Proposed method comprises heating the ingots to ductility temperature and piercing them at helical rolling mill to sleeves with different rolling-out µpr, µpr1 and µpr2 over the length. Ingots are pierced at helical rolling mill to sleeves shaped to two hollow connected truncated cones. One of the latter features length equal to (0.10-0.15) of sleeve length, its smaller base being located at front end along sleeve piercing. Second cone features length equal to (0.85-0.9) of sleeve length, its smaller base being located at rear end along sleeve piercing. Sleeves of ith size are rolled at Pilger mill to pipes of jth size at constant amount of advance mij, steady rolling and rolling-outs µpg1ij, µpg2ij, and µpg3ij, respectively, at seeding, steady rolling and end of rolling - at withdrawing of Pilger heads from the sleeve conical ends. Pipe lengths are cut to pipe arms, process wastes, that is Pilger heads, and seed ends are cut off by hot-cutting saw.
	Method and device for slab surface processing at production line Invention relates to continuous CSP process from continuous teeming to hot rolling at production line. Slab top and bottom surfaces are subjected to oxidation. Before said oxidation scale is removed from slab surface. 4 mm deep slab (5) layer is subjected to oxidation. Oxidation is executed by oxidising flame of oxidising gas mix fed by oxidising device (21) including sprayer or sprayers to produce solid or liquid oxidation product at slab surface.
	Production method of longitudinally welded main pipes Method involves production of a pipe from a sheet workpiece with preliminary bending of longitudinal edges and further U-shaped or O-shaped deformation of the above workpiece, as well as welding of process planks in the zone of longitudinal side edges of the sheet workpiece, which are connected by welding, processing of edges of the above ends and their welding so that a longitudinal connection weld of pipes is formed. Process planks for each sheet workpiece are made of process cut-off pieces obtained at production of sheet workpieces of the same melt as the workpiece. Cut-off pieces with the thickness corresponding to thickness of that workpiece are used, and welding of planks to end faces of the sheet workpiece and processing of longitudinal edges of that workpiece is performed before its shaping, thus performing a welding process so that a gap between adjacent planks does not exceed 6 mm after connection of ends of the workpiece before welding of a longitudinal weld of the pipe. After that, welding of process as well as internal and external connection welds is performed in series. Adjustment of a welding tool and parameters of the process is performed on process planks with change-over to a stable welding mode immediately in the connection zone of ends of a pipe workpiece.
	Cooling system Invention relates to metal forming, particularly, to production of metal containers by forming of metal walls with closed-cycle fluid cooling system. Proposed device comprises drawing die, piston and assembly to drive said piston along tubular assembly channel. Tubular assembly has fluid inlet hole. Tubular assembly channel surface has grooves for coolant flow between said channel and around piston outer surface and seal to minimise oil leaks in coolant flow. Cooling fluid is directed back in the tank via heat exchanger while whatever oil is separated from cooling fluid by oil separator. Then, said oil can be filtered, purified and forced back into working cycle, or removed.
	Thin sheet manufacturing method Manufacturing method of thin sheets from pseudo-alpha titanium alloys involves deformation of an ingot into a slab, mechanical processing of a slab, multipass rolling of a slab for a semi-finished rolled stock, cutting of the semi-finished rolled stock into sheet workpieces, their assembly into a pack and its rolling and finishing operations. Multipass slab rolling is performed at several stages. After the semi-finished rolled stock is cut into sheet workpieces, their finishing operations are performed. Assembly of sheet workpieces into a pack is performed by laying so that direction of sheets of the previous rolling is perpendicular to direction of sheets of the next rolling. Rolling of the pack is performed till a final size, and then, obtained sheets are removed from it and finishing operations are performed.
	Mobile module of automating riveting of panels Invention relates to aircraft engineering and can be used for riveting of panels at assembly appliances. Mobile module comprises hydraulic press, squeezer rod and spreading device. Besides, it incorporates hydraulic press displacement unit coupled with this module by cable guides, drive and parallelogram, mechanism composed by turn levers and articulated with drive unit and spreading device. Spreading device interacts via squeezer rod with hydraulic press.
	Winder-unwinder and method of winding and unwinding of metal article at rolling line Invention relates to metallurgy. This device is mounted between downstream stand and upstream stand of rolling mill. It comprises heating furnace and load-bearing structure located outside said furnace. Two winding-unwinding drums are arranged inside the furnace at load-bearing structure at diametrically opposite points. Said load-bearing structure allows selective driving of first of two drums to winding position or to unwinding position. This configuration allows second of two drums to be set to opposite position of winding or unwinding. Invention covers also the method of winding-unwinding of rolling stock by this device.
	Method of magnetic pulse machining Invention relates to machine building and cab be used for stabilisation of part geometry by equalising residual strains in its surface plies. Proposed process comprises processing of the part by current pulses fed by inductor with two-circuit generator with inductance and capacitive storage. Note here that prior to processing, space between inductor and part located in generator secondary circuit is filled with ferromagnetic rheological fluid. Note also that capacitive storage charge time in generator primary circuit is set equal to rheological fluid solidification time. Mind that time interval between pulses is limited by fluid stay in solidified state.
	Method to manufacture thin wall pipes with external helical fins and device for its implementation Method involves shaping of a pipe with longitudinal fins and its twisting on a mandrel. Before and after shaping of the longitudinal fins and after twisting, the pipes are subject to vacuum heat treatment under the temperature in the recrystallisation range with the pipes being set vertically and distanced from each other in the furnace body. Torque is transferred via one pipe end fixed inside on the mandrel while the other pipe end is fixed outside in a jaw so that to form a gap between the pipe and the mandrel along the whole length of the twisted section with the gap value not exceeding the straightness tolerance, and so that to be able of rotating the mandrel in respect to the pipe. The device comprises relevant units.
	Die for open-type bulk forging Die includes upper and lower halves with prints forming a stream, a box and a flash bridge. The bridge is made by connection of a horizontal section to a section formed by a projection on one half of the die by a bore on the other half of the die. The projection is restricted by some part of a circle with radius R1, and the bore is made with radius R2. Centre of bore radius R2 is offset relative to the centre of projection radius R1 to the zone of the stream with larger surface areas of cross sections along the perimeter of the flash bridge and to the side from the zone of the stream with smaller surface areas of cross sections. With that, offset is performed by a value that is variable along the perimeter of the flash bridge and does not exceed 0.8h, where h - design height of the flash on the flash bridge.
	Encased inker detachable roller Invention relates to inker roller. This roller is located in the case on bolt between its head and cover to run therein. Said case has the recess for inker, bolt head and cover clamps. Bolt head clamp is composed of truncated cone parting face and has the yoke aligned with working roller rotational axis. Cover clamp is composed of circular cylinder parting face.
	Hand pipe bender Invention relates to metal forming particularly to pipe bending and can be sued for repair and construction. Flanged bending gage and reeling roll have teeth cut over cylindrical surface to displace reeling roll over bending gage are interconnected by two plates to run there between for interaction of roll teeth with those of banding gage. Note here that bending gage and reeling roll have central square-shape bores with cylindrical ledges made there around while two square-shape bores are made at plate ends to receive ledges and to connect said plates with reeling roll and bending gage designed to accommodate the tools for rotation of reeling roll over the bending gage.
	Gripper feed of part in press Invention relates to gripper feeders of multiposition processes, mainly, crank die-forging presses. Proposed feeder comprises stationary bed, claws, claw actuator to displace the claws along press positions, claw vertical drive and mechanisms to extend, clamp and unclamp the claws. claw actuator to displace the claws along press positions and vertical drive are composed by the frame with grippers secured thereto. Said frame can be swung by links articulated therewith. Hinge linked with crank is arranged at the centre of one of said links. Mechanisms to extend, clamp and unclamp the claws are equipped with motors. Said motors have disc rotor and stator mounted at fixed bed in the zone of operation of appropriate drive.
	Step-by-step rolling method Method involves deformation of a workpiece by direct and reverse travel at back-and-forth movement of axes of rolls and free movement of the workpiece along the rolling axis to the side opposite to direction of movement of axes of rolls during deformation of the workpiece, forced movement of the workpiece towards a ready-made channel during formation of a gap between the workpiece and the working surface of rolls. Reduction of axial forces in the workpiece at its deformation by reverse travel is provided owing to the fact that forced movement of the workpiece prior to reverse travel is performed additionally by the value of free movement of the workpiece; with that, free movement of the workpiece does not exceed m×(λ-1), where λ - ratio of cross-sectional areas of the initial workpiece and the ready-made channel; m - design supply.
	Method of female thread making Invention relates to metal forming and cutting. Proposed process is implemented with the help of tap provided with thread cutting elements with exposed contour and chip removal sections. Tap thread ID at taper lead section is smaller than thread cutting ID by twice the depth of defect surface layer formed at cut thread turn top. Chip removal sections are equipped with cutter bits arranged at the last turn of taper lead and first gaging turn to cut flat profile of cut thread. This tap has lengthwise central bore and crosswise bores for forced feed of lubricant-coolant to cutter face surface cutting zone. Tape drive incorporates overrunning coupling with splines inclined to lengthwise axis. Said coupling is fitted in the bush splined bore. It can slide on guide keys arranged in drive case to increase spring rpm by pulse lengthwise force and compression spring.
	Production of intermediate blank from iridium Unalloyed iridium ingot is subjected to hot forging, electron-beam melting iridium with content of the main component making at least 99.95 wt % being used to this end. Forging is carried out for about 0.5 h. Note here that temperature is decreased from 2000°C to 1300°C. Then, forged piece is annealed in vacuum of 10-4÷10-5 mm Hg. Forged piece is heated at the rate of 150°C/h the room temperature to 1100÷1200°C and held thereat for at least 1 h.
	Production of steeply curved thin-wall preset-shape pipes Workpiece is placed inside half-dies of composite female die and centred thereat. Then, said female die is placed in press bottom plate opening to arrange discharge device case thereon, said device having electrodes and working fluid flows openings. The mould is subjected to force so that half-dies are drawn together to make workpiece cross-section shape approximate to that of female die. Thereafter workpiece cavity is filled with working fluid for it to contact with electrodes. Now, high-voltage pulse discharge is fed to discharger electrodes to generate shock wave in fluid so that workpiece is shaped to female die geometry to comply with its inner surface.
	Production of disc-shape forged pieces from alloy of aluminium with ortho-phase titanium Ingot is subjected to swaging-drawing to octahedron with total reduction of 1.6-1.7. Final forming is performed at shaped hammers at 4-5 displacements over hammer surface and, then, in closed sizing die. Total reduction ay final forming makes 3-5.
	Steel sheet for hot stamping and method of production of hot-stamped part using steel sheet for hot stamping Invention relates to metallurgy, particularly to production of hot-stamped part that feature high corrosion resistance. Two plies are successively applied on steel substrate surface: plating ply I containing 60 wt % and more of Ni, Zn and unavoidable impurities making the rest. Note here that coating mass varies from 0.01 to 5 g/m2; and plating ply II, containing 10 to 25 wt % of Ni, Zn and unavoidable impurities making the rest. Note coating mass varies from 10 to 90 g/m2.

Another patent 2513755.