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4273 results about "Forging" patented technology

Forging is a manufacturing process involving the shaping of metal using localized compressive forces. The blows are delivered with a hammer (often a power hammer) or a die. Forging is often classified according to the temperature at which it is performed: cold forging (a type of cold working), warm forging, or hot forging (a type of hot working). For the latter two, the metal is heated, usually in a forge. Forged parts can range in weight from less than a kilogram to hundreds of metric tons. Forging has been done by smiths for millennia; the traditional products were kitchenware, hardware, hand tools, edged weapons, cymbals, and jewellery. Since the Industrial Revolution, forged parts are widely used in mechanisms and machines wherever a component requires high strength; such forgings usually require further processing (such as machining) to achieve a finished part. Today, forging is a major worldwide industry.

Method for rolling and shaping stainless steel special-shaped ring forging

The invention discloses a rolling and shaping method for a stainless steel heterotypic ring forging in order to obtain the alloy heterotypic ring forgings with excellent tissues and properties as well as realize accurate rolling. The method includes the following steps: alloy bar material is heated, carried out continuous upsetting and deformed by 50 to 55 percent, so as to be made into a solid cake and then is punched again to lead the alloy bar material to be made into a hollow round cake after the aperture dimension of the alloy bar material is 30 to 35 percent of the dimension of the outer diameter thereof; a rectangle pre-rolling blank is obtained after the hollow round cake is heated, rolled circularly and deformed by 40 to 45 percent; the pre-rolling blank is heated and arranged in a rolling die of a ring rolling machine and forms a heterotypic ring forging after being rolled and deformed by 50 to 55 percent in a section groove. When in expansion, the broadening speed of the pre-rolling blank along the radial direction is 2mm/s to 15mm/s with radial rolling force of 20000kg to 120000kg. The method is mainly used for the shaping of the heterotypic ring forging of an aeroengine. The method can be adopted to obtain the heterotypic ring forging that is arranged in a flow line along the outline of a part.
Owner:GUIZHOU ANDA AVIATION FORGING

Device for preparing semi-solid alloy rheological slurry or blank

ActiveCN101618438AOvercome the disadvantages of large and complex structure and high investment costLow investment costCrucibleSemi solid
The invention discloses a device for preparing semi-solid metal and alloy slurry, which mainly comprises an electromagnetic stirrer, an insulating layer, an external cooling controller, a valve, a draft tube, a preparation crucible, an insulating crucible cover, a standing crucible, a melting crucible and a thermocouple. The middle part of the preparation crucible is provided with an internal cooling controller, and the outer wall of the internal cooling controller forms a clearance with the inner wall of the preparation crucible. The device can be connected with a press-casting machine, an extruder, a continuous casting machine and a forging machine, wherein the press-casting machine consists of a press-casting fixed die, a press-casting movable die, an injection chamber and a punch head; the extruder consists of a right extrusion die profile, a left extrusion die profile, an extrusion cylinder and an extrusion rod; the continuous casting machine consists of a tundish, a crystallizer, a cooling water nozzle and a traction mechanism; and the forging machine consists of a forging die cavity and a forging die. The device has the advantages that the device has simple and compact structure, low investment cost and strong practicability; the temperature field and tissue of the prepared slurry are distributed evenly; the semi-solid alloy slurry is pure, does not bubble and has good self cleanness; and the device can produce large-specification semi-solid slurry or blank, and is quite suitable for the preparation and formation of the semi-solid slurry or the blank.
Owner:有研金属复材技术有限公司

Short-flow casting and rolling composite forming method for ferrule piece

The invention relates to a short-flow casting and rolling composite forming method for a ferrule piece, which belongs to a machining and forming method for a large-sized ferrule piece and mainly overcomes the technical difficulty that the conventional rolling method has high material waste and serious energy waste. The invention adopts the technical scheme that the short-flow casting and rolling composite forming method for the ferrule piece comprises the steps of alloy melting, molten steel refining, centrifugal casting of a ring blank, hot rolling and expanding, rough machining, heat treatment and finish machining, wherein the molten steel refining refers to external refining with an LF furnace and argon stirring to obtain high-purity molten steel; the centrifugal casting of the ring blank comprises that the refined molten steel is centrifugally cast at the temperature of 1,600 DEG C to form the ring blank, and meanwhile the cast blank grains are thinned by adopting electromagnetic stirring; and the hot rolling and expanding comprise that when the ring blank casting is solidified and the temperature drops to initial forging temperature of 1,200 DEG C, the rolling and expanding are directly performed on a rolling and expanding machine, the feeding amount is controlled during rolling and expanding, and the rolling-expanding ratio is 2 to 3.
Owner:TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY

Method for rolling and shaping aluminum alloy special-shaped ring forging

The invention discloses a rolling and shaping method for an aluminum alloy heterotypic ring forging in order to obtain the alloy heterotypic ring forgings with excellent tissues and properties as well as realize accurate rolling. The method includes the following steps: alloy bar material is heated, carried out continuous upsetting and deformed by 50 to 55 percent, so as to be made into a solid cake and then is punched again to lead the alloy bar material to be made into a hollow round cake after the aperture dimension of the alloy bar material is 30 to 35 percent of the dimension of the outer diameter thereof; a rectangle pre-rolling blank is obtained after the hollow round cake is heated, rolled circularly and deformed by 40 to 45 percent; the pre-rolling blank is heated and arranged in a rolling die of a ring rolling machine and forms a heterotypic ring forging after being rolled and deformed by 50 to 55 percent in a section groove. When in expansion, the broadening speed of the pre-rolling blank along the radial direction is 2mm/s to 15mm/s with a radial rolling force of 20000kg to 120000kg. The method is mainly used for the shaping of the heterotypic ring forging of an aeroengine. The method can be adopted to obtain the heterotypic ring forging that is arranged in a flow line along the outline of a part.
Owner:GUIZHOU ANDA AVIATION FORGING

Oxide dispersion strengthening low activity martensitic steel material and preparation thereof

InactiveCN101328562AEvenly distributedReasonable grain sizeNeutron irradiationBiological activation
The invention discloses an oxide dispersion strengthened low-activation martensitic steel. A substrate is a CLAM steel and contains 0.2 to 0.5 percent of Y2O3 and 0.10 to 0.50 percent of Ti. The method comprises the following steps that: CLAM steel powder, Y2O3 powder and Ti powder are evenly mixed and put in a sealed container for degassing, subjected to mechanical alloying, hot isostatic pressing or hot-pressing sintering and densification molding under the protection of high-purity argon gas, then subjected to hot squeezing or forging and rolling and other machining and molding processes, and the needed section material is prepared; and finally, the section material is subjected to the treatment of quenching and tempering to prepare the oxide dispersion strengthened low-activation martensitic steel ODS-CLAM. The oxide dispersion strengthened low-activation martensitic steel has the advantages that: the low-activation martensitic steel realizes a martensite-based alloy with oxide strengthening phases evenly dispersed and distributed and crystal grains of a reasonable size, can be used as a structural steel material, has the characteristics of strong neutron irradiation resistance, good high-temperature performance, low activation, etc. and is suitable for a fusion reactor and other environments with strong neutron irradiation and high-temperature.
Owner:INST OF PLASMA PHYSICS CHINESE ACAD OF SCI

Method for rolling and shaping nickel-based high-temperature alloy special-shaped ring forging

The invention discloses a rolling and shaping method for a nickel-based high temperature alloy heterotypic ring forging in order to obtain the alloy heterotypic ring forgings with excellent tissues and properties as well as realize accurate rolling. The method includes the following steps: alloy bar material is heated, carried out continuous upsetting and deformed by 60 to 65 percent so as to be made into a solid cake and then is punched again to lead the alloy bar material to be made into a hollow round cake after the aperture dimension of the alloy bar material is 30 to 35 percent of the dimension of the outer diameter thereof; a rectangle ring blank is obtained after the hollow round cake is heated, rolled circularly and deformed by 20 to 25 percent; a rectangle pre-rolling blank is obtained after the rectangle ring blank is heated, rolled circularly and deformed by 20 to 25 percent again; the pre-rolling blank is heated and arranged in a rolling die of a ring rolling machine and becomes a heterotypic ring forging after being rolled and deformed by 40 to 45 percent in a section groove of the die. When in expansion, the broadening speed of the pre-rolling blank along the radial direction is 2mm/s to 15mm/s with a radial rolling force of 40000kg to 220000kg. The method is mainly used for the shaping of the heterotypic ring forging of an aeroengine or a gas turbine. The method can be adopted to obtain the heterotypic ring forging that is arranged in a flow line along the outline of a part.
Owner:GUIZHOU ANDA AVIATION FORGING

Middle-duty and heavy-duty automobile knuckle stamp forging extruding compound technology

A middle-duty and heavy-duty automobile knuckle stamp forging extruding compound technology overcomes the disadvantages of low material utilization and large device investment of the traditional production technology, utilizes flexibility of preforming by a stamping hammer and structure characteristic of a press extrusion die and adopts stamping hammer production technology and press extrusion compound technology. The main technical scheme includes a series of technical measures of vertically splitting of blank material by mould with V-shaped cutting edge and locally enclosed structure, preforging of cavity damping stripe, finish forging of locally enclosed structure, hot extrusion forming of steering space and the like, parameter requirements and corresponding moulds and devices. The invention has the characteristics that device investment of stamping hammer production technology is small, structure is simple, and equipment manufacturing period is short; production technological flow is reasonable and processing is easy; and the invention also has the characteristics that product quality is good and productivity is high; and material utilization is obviously higher than that of any original knuckle processing technology and production cost is greatly reduced.
Owner:HUBEI TRI RING FORGING

Controlled-forging controlled-cooling processing technology of bearing ring prepared by GCr15

The invention relates to a controlled-forging controlled-cooling processing technology of a bearing ring prepared by GCr15, comprising the following steps of: quenching the bearing ring in cooling fluid at final forging temperature of 850-950 DEG C and at fluid outlet temperature of 350-550 DEG C; when heating the bearing ring to the temperature of 450-550 DEG C, after preserving the temperature for 1h-3h, discharging the bearing ring from a boiler and cooling the bearing ring to room temperature; when heating the bearing ring to the temperature of 650-690 DEG C again, preserving the temperature for 1h; when continuously heating the bearing ring to the temperature of 740-780 DEG C, after preserving the temperature for 2-3h, cooling the bearing ring to the temperature of 680-690 DEG C and preserving the temperature for 2-4 hours; finally, when cooling the bearing ring to the temperature of 550-600 DEG C at the speed of 10 DEG C/h, cooling o the bearing ring to the room temperature along with the boiler by air; quenching a machined semi-finished bearing ring; when heating to the temperature of 810-830 DEG C, after preserving the temperature for 45-60min, discharging the machined semi-finished bearing ring from the boiler and quenching the machined semi-finished bearing ring in oil; and when heating the machined semi-finished bearing ring to the temperature of 160-200 DEG C after being quenched, preserving the temperature of the machined semi-finished bearing ring for 4h, discharging the machined semi-finished bearing ring from the boiler and cooling the machined semi-finished bearing ring to the room temperature by air. According to the invention, carbides, martensite crystals and austenite crystals of the bearing ring are refined, network carbides are improved or eliminated and impact ductility and fatigue life are improved.
Owner:LUOYANG BEARING RES INST CO LTD

Multidirectional forging method for high-alloyed high-temperature alloy sheared billet/biscuit

ActiveCN106862447AAccurately measure uniformityGuaranteed uniformityMetal-working apparatusFine structureUltra fine
The invention relates to a forging method, in particular to a multidirectional forging method for obtaining a high-alloyed high-temperature alloy sheared billet/biscuit with the uniform and fine structure. The multidirectional forging method includes the following steps that (1) high-temperature homogenizing treatment is conducted on a low-segregation and high-purity controlled directional solidification ingot blank; (2) the controlled directional solidification ingot blank is subjected to upsetting and cogging; (3) the upset blank is forged into a cuboid blank; (4) multidirectional forging is conducted on the cuboid blank; (5) the blank subjected to multidirectional forging for multiple cycles is subjected to finishing, so that a shear billet/biscuit of the required size is obtained; and (6) the obtained shear billet/biscuit is subjected to physical and chemical testing. The multidirectional forging method is not only suitable for preparation of uniform and ultra-fine-grain high-alloyed nickel-based high-temperature alloy sheared billets for aviation, spaceflight and vessels, but also can be popularized to a steel mill to product high-speed steel and hot-working die steel, and the prepared ultra-fine-grain shear billets have the characteristic of uniform structure.
Owner:CENT IRON & STEEL RES INST

Cold-forming die steel collars anticentripetal composite casting technique for rail beam and section

The invention discloses a centrifugal composite casting technology for a cold working die steel roll collar used for a rail beam and section mill. The chemical compositions by weight percentage are as follows: outer layer compositions: 1.2 to 2.0 percent of C, less than 0.05 percent of P, less than 1.0 percent of Si, less than 0.05 percent of S, less than 1.0 percent of Mn, less than 1.0 percent of Ni, 10 to 15 percent of Cr, 0.1 to 1.0 percent of Mo, 0.1 to 1.5 percent of V, and the balance being Fe; core compositions: 1.2 to 3.0 percent of C, less than 0.05 percent of P, 1.0 to 3.0 percent of Si, less than 0.05 percent of S, 0.5 to 2.0 percent of Mn, less than 1.0 percent of Cr, less than 1.0 percent of Ni, less than 1.0 percent of Mo, and the balance being Fe. The centrifugal casting technology is adopted to manufacture the cold working die steel roll collar used for various rail beam and section mills; a core adopts high-toughness graphitic steel when the outer layer obtains high wearing resistance; and reasonable casting parameter matching is designed to guarantee the good combination of cold working die steel and the core. Compared with products produced by the prior forging method, the technology has equivalent application effect and low manufacturing cost, and the performance-price ratio is far higher than that of the forging production method. The technology realizes the casting which substitutes the forging, and satisfies the development direction of the industry.
Owner:SINOSTEEL XINGTAI MACHINERY & MILL ROLL

Aluminum-silicon series deforming alloy and manufacturing method thereof

InactiveCN101144134AReduce contentContent adjustmentImpurityHeat treated
The present invention discloses aluminum silicon deformable aluminum alloy and the preparation method thereof. According to the weight percentages, the alloy contains 9.0-12.6 percent of silicon, 1.5-4.0 percent of copper, 0.3-0.6 percent of magnesium, 0.1-3.5 percent of bismuth, less than 0.30 percent of iron, less than 0.20 percent of zinc, less than or equal to 0.15 percent of impurity, and aluminum as the residual. The raw material is molten and fined in a reflecting smelting furnace, after Al-Sr intermediate alloy modification to the alloy liquid, cast rods are obtained through semi continuous casting, and after hot extrusion and deformation to the cast rods, the aluminum silicon deformable aluminum alloy is produced through forging and T6 heat treatment. After adding the element bismuth into the alloy, the present invention greatly enhances the wear-resisting performance of the alloy, leads the alloy to have self lubricating property, prolongs the service life of the product produced with the alloy, reduces the use cost, and leads the alloy to have the tensile strength of above 390 MPa, the elongation rate after breaking of 6 percent, and the hardness degree of 136-141 HB. The present invention is mainly used for producing vehicle components of wheels, pistons, bearings, and two-side swash plates of vehicles and motorcycles which have high demands on the intensity, the toughness and the abrasion resistance.
Owner:李贞宽 +1

Splicing method for measuring image data with large forgings assisted by lasers

The invention discloses a splicing method for measuring image data with large forgings assisted by lasers, and belongs to the field of image processing and computer vision detection. The method comprises the steps that two different laser devices are used for constructing feature points on a metal surface, and the image data can be spliced under complex working conditions; two sets of adjacent binocular cameras carry out image data rough matching through light spots projected by point laser devices, meanwhile, a conversion matrix is obtained, linear laser devices are used for projecting grids, the rough matching conversion matrix is adopted as an initial value, image data fine matching is carried out, and splicing is achieved after redundant data are removed. The three light spots of different sizes are adopted as feature points in image data rough matching, error matching is effectively avoided, and matching precision is improved. The conversion matrix obtained through rough matching is adopted as the initial value in fine matching, and the computation quantity of correcting the conversion matrix is reduced. In the splicing process, a measurement system is taken as a multi-binocular measurement system, the method has no precise requirement for the position of a target, and implementation is easy.
Owner:DALIAN UNIV OF TECH

Precision-forging plastic molding technology of bell shell of ball-cage type universal joint

The invention discloses a precision-forging plastic molding technology of a bell shell of a ball-cage type universal joint, comprising steps of warm-forging plastic molding and cold-forging plastic molding. The warm-forging plastic molding technology comprises the following steps: a. blanking; b. manufacturing a blank; c. coating; d. heating; e. directly extruding; f. upsetting; g. extruding reversely; h. normalizing, shaping, sand blasting, parkerising, and treating the surface by a manner of saponification; and adopting the forging plastic molding technology of combining the warm-forging plastic molding technology with the cold-forging plastic molding technology, firstly upsetting to obtain the pre-molding blanking material, secondly, extruding reversely in the chamber of the molding mold to form a ball channel and finally forming the inner spherical surface by using the cold-forging plastic molding technology. The product quality is steady, the production efficiency is improved, the production period is short, the method for adopting the machine tool after the hot-forging is replaced, the workload of the machine tool process is reduced, the precision requirements are met, the manufacturing cost and the period are reduced, and the development trend of the manufacturing field in the world is met.
Owner:张太良
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