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111results about How to "Reduced tonnage requirements" patented technology

Device for reducing friction of guided region when forming high pressure in pipe

InactiveCN101011715ASolve the sealing problemEliminate high pressure contact areasShaping toolsEngineeringHigh pressure
The invention relates to a device for reducing guiding zone friction in high pressure formation of tubular material. It comprises dies, left punch head, right punch head, right round body on the right end face of the left punch head with right guiding ring slot, so does the right punch head, with gaps between the die, left punch head and the right punch head. It can eliminate the high touch pressure zone of the tubular end and the die guiding zone inner wall, reducing the friction resistance to improve production efficiency and die durability, and lowered requirement for tonnage.
Owner:严格集团股份有限公司

Superfine crystal nickel-based high-temperature alloy and method for preparing same

The invention provides an ultra-fine crystalline nickel base high-temperature alloy and a method for preparing the same, belonging to the high-temperature alloy steel field. The ultra-fine crystalline nickel base high-temperature alloy is particularly applicable to a high-temperature structural component which has high requirement to high-temperature strength and fatigue property, requires superplastic forming and has a complicated structure. The chemical compositions by weight percent of the ultra-fine crystalline nickel base high-temperature alloy are: 17 to 19 percent of Fe, 17 to 20 percent of Cr, 2.8 to 3.3 percent of Mo, 0 to 1.5 percent of W, 0.8 to 1.5 percent of Al, 0.3 to 1.3 percent of Ti, 4.7 to 5.7 percent of Nb, less than or equal to 0.015 percent of C, and the balance being Ni. The preparation method reasonably controls the parameter of a deformation process to allow the deformation temperature to be positioned in a grain boundary precipitated phase region and an austenite phase region which have higher solution temperatures, and uses powerful pinning action of a precipitated phase to the grain boundary to produce the ultra-fine crystalline alloy with a grade of grain fineness of between ASTM12 and ASTM13 grade. Compared with the prior art, the ultra-fine crystalline nickel base high-temperature alloy has simple alloy compositions, greatly reduces the resistance to deformation during forming, has small loss to forging and rolling equipment, and prevents crystal grains from growing when the ultra-fine crystalline nickel base high-temperature alloy is heated for a long time at a high temperature.
Owner:UNIV OF SCI & TECH BEIJING

Continuous extrusion machining device used for magnesium alloy sheet strip with weak basal texture and extrusion machining method

ActiveCN105032964AAverage grain size reductionHigh strengthExtrusion diesAsymmetric distributionMachining process
The invention relates to a continuous extrusion machining device used for a magnesium alloy sheet strip with a weak basal texture and an extrusion machining method. The device comprises an extrusion system mainly composed of a pressure motor, an extrusion telescopic head, a male die and a female die, and multiple inclined steps gradually getting close to the axis of a die cavity are arranged at the two sides below the upper middle portion in the die cavity of the female die and are distributed asymmetrically. In the extrusion machining process, a magnesium alloy blank is placed in the die cavity of the female die and extruded by the descending male die, and as the male die descends continuously, the magnesium alloy blank is gradually thinned to form a magnesium alloy sheet with the weak basal texture. Due to step-by-step grain refinement and basal texture weakening, extrusion force in the extrusion process is greatly reduced, the average grain size of the magnesium alloy is greatly reduced compared with that of a magnesium alloy extruded normally, and the (0002) basal texture is reduced to 8.2 from 27.6 compared with that of a sheet obtained through normal extrusion.
Owner:TAIYUAN UNIV OF TECH

Rotary forging method for large disc type work piece and forging device

The invention provides a rotary forging method for large disc type work pieces and a forging device. The method comprises preparing a forging die, preparing blanks, pre-forging a shunt slot, positioning the blanks and carrying out rotary forging in steps. Based on the method, the invention also provides a forging device which can realize relative rotation of an upper forging die and a lower die, and the local forming process for the disc type work pieces can be carried out through rotary forging of the upper forging die and the lower die. In order to control metal flow in the forging process, the procedure of pre-forging the shunt slot is added prior to the rotary forging. Moreover, the upper forging die with a special structure is adopted to overcome the warpage of the work pieces during rotary forging. The forming method has the advantages of low forming load, simple dies and low processing cost, and can greatly reduce the manufacturing cost of existing large disc type work pieces.
Owner:XI AN JIAOTONG UNIV +1

Roll forming and heat treatment method of Ti2AlNb-based alloy cartridge receiver ring element

The invention discloses a roll forming and heat treatment method of a Ti2AlNb-based alloy cartridge receiver ring element. The roll forming and heat treatment method comprises the following steps that a Ti2AlNb alloy bar subjected to cogging is loaded into a high-temperature heating furnace to be heated to 1000 DEG C to 1050 DEG C, after the heat preservation is carried out for 80 minutes, the upsetting and the drawing out are carried out at a strain rate being 0.01S<-1>, then, the upsetting and the punching are carried out, and a Ti2AlNb-based alloy cartridge receiver ring blank is obtained; the Ti2AlNb-based alloy cartridge receiver ring blank is rolled at a strain rate being 0.01S<-1>, the rolling process is completed in the heating times being 3 to 5, the lowest temperature in each heating time is 900 DEG C, and the total deformation quantity in the rolling process is 25 percent to 45 percent; after the forging, the Ti2AlNb-based cartridge receiver ring element is subjected to solid solution and aging heat treatment. The roll forming and heat treatment method has the advantages that the Ti2AlNb-based alloy cartridge receiver ring element can be formed at lower deformation temperature, and in addition, fine crystal and basket-weave microstructures with excellent performance are obtained.
Owner:GUIZHOU ANDA AVIATION FORGING +1

Front bumper anti-collision beam and processing method thereof

The invention discloses a front bumper anti-collision beam and a processing method thereof. The front bumper anti-collision beam comprises a bearing section (1), an upper supporting section (2) which is at upper end of the bearing section (1) and a lower supporting section (3) which is at lower end of the bearing section (1), wherein the front bumper anti-collision beam is integrally moulded by a steel plate of which the tensile strength is 400-600 Mpa and the thickness is 1.8-2.5 mm in a hot stamping way; and the hot stamped tensile strength is 1300-1800 Mpa. The processing steps of the anti-collision beam are as follows: baiting, heating, punch forming, shot blasting, trimming and punching. The anti-collision beam saves the material, reduces the cost, simplifies the processing method by optimization of structure and material section and improvement of processing method, and can reach the anti-collision ability which is the same that before being improved.
Owner:力帆科技(集团)股份有限公司

Blocking extrusion forming die

The invention discloses a blocking extrusion forming die, belonging to the field of metal pressure processing technology. The die mainly consists of three parts: a rigid die frame, a floating forming die core and a die locking device, wherein the die frame provides support, fixing and guide effects to the die core; and upper and lower floating concave die modules are automatically locked under the effect of a locking hook device to form a closed cavity. When an upper die holder moves downward, the upper and lower punches move bidirectionally to extrude the bar stock to realize blocking formation of the part. The blocking extrusion forming die provided by the invention easily realizes blocking formation, reduces the requirement for the tonnage of equipment, improves the material forming performance and material utilization rate, and lowers the manufacturing cost.
Owner:ANHUI UNIVERSITY OF TECHNOLOGY

Manufacturing process of automobile longitudinal bearing beam

The invention discloses a manufacturing process of an automobile longitudinal bearing beam. The process comprises the following steps: (a) blanking; (b) removing oil and rust from the blanked material; (c) performing hot stamping forming on the clean material; (d) performing final punching and trimming on the formed piece; and (e) performing rust prevention treatment. The hot stamping is performed in a closed cavity filled with nitrogen; a plate is uniformly heated to 770-780 DEG C to form a uniform austenite structure and then is pressed by using a stamping die; then the temperature reduction process is quickly finished at a constant speed in the stamping die; and finally the automobile longitudinal bearing beam is in a uniform martensite structure. Through the invention, high strength can be realized as long as the wall thickness of the automobile longitudinal bearing beam is just 6 mm; the shortcomings of cold stamping, such as crack, excessive rebound and the like, are avoided; the automobile longitudinal bearing beam has high anti-collision level and is safe and reliable; the automobile becomes light, the automobile oil consumption is reduced, and CO2 discharge is reduced; and moreover, the generation of an oxidized layer on the automobile longitudinal bearing beam is avoided at a high temperature, and therefore regular cleaning of oxidized layers is not required.
Owner:上海德真工贸有限公司

High-temperature alloy disc die forging method

The invention belongs to the technical field of high-temperature alloy die forging, and particularly relates to a high-temperature alloy turbine disc forge piece organization and performance thermal machining method. A performing die forging plus bearizing plus die forging method includes the steps that the specification and size of the wild shape required by finish forging are determined, a finish forging die and a performing die forging die are prepared, performing die forging is conducted, bearizing is conducted till the wild shape required by the finish forging is formed, and the finish forging is conducted; an annular blank is determined according to the forge piece shape to serve as the wild shape; first-fire forging of a titanium alloy bar is forged through the performing die, and the heating number integrates traditional upsetting, punching and saddling processes; preformed forge piece core materials generated after forming die forging is conducted are removed; bearizing is conducted on a performing forge piece till the wild shape size required by finish forging is formed; one-fire finish forging is conducted till forming is finished. According to the method, the problems that the final forge piece of the high-temperature alloy turbine disc forge piece is uneven in organization and residual stress due to the blank making process of more heating numbers and smaller deformation are avoided.
Owner:SHAANXI HONGYUAN AVIATION FORGING

Composite spinning forming device and process for clutch shell with internal longitudinal teeth

The invention discloses a composite spinning forming device for a clutch shell with internal longitudinal teeth. The device comprises a spindle, a mandrel and a tailstock, wherein the spindle, the mandrel and the tailstock are coaxially arranged in sequence. One end of the mandrel is mounted on the spindle, and a positioning shaft for mounting a blank is arranged at the other end of the mandrel; external longitudinal teeth are evenly distributed on the outer wall of the mandrel in the axial direction, and end face teeth are further arranged on the end face of the end, provided with the positioning shaft, of the mandrel; a through hole is formed in the middle of the tailstock, and the tailstock is detachably connected with the positioning shaft through the through hole; a first spinning wheel, a second spinning wheel and a third spinning wheel are arranged on the outer side of the tailstock, spinning wheel rotation axes of the three spinning wheels are arranged in the direction of the axis of the spindle and can form included angles of 0-90 degrees with the axis of the spindle, and the three spinning wheels can be linked for feeding in the direction of the rotation axes and the radial direction. By means of the device, the machining efficiency of the clutch shell with the internal longitudinal teeth can be improved. The composite spinning forming device is mounted on power spinning equipment, different working molded surfaces are designed for the three spinning wheels, and certain included angles are formed between the rotation axes and the axis of the spindle, so that common spinning, power spinning and extrusion functions are achieved respectively.
Owner:SICHUAN AEROSPACE LONG MARCH EQUIP MFG CO LTD

Metal pipe forming equipment and method thereof

The invention relates to metal pipe forming equipment, which comprises a mold, primary-secondary punch heads, a feeding compression ring, a base plate, buffer elements, particulate media and vibration-assisted systems. The mold comprises a first half mold and a second half mold; the primary-secondary punch heads comprise upper primary-secondary punch heads and lower primary-secondary punch heads; stepped hole structures are arranged in the primary punch heads; the secondary punch heads are of stepped structures matched with primary punch head stepped holes; the feeding compression ring is arranged in a forming hole of the first half mold; the base plate is arranged on the bottom end of the second half mold and is provided with a through hole; the buffer elements are arranged between the second half mold and the base plate; the particulate media are arranged in a metal pipe to be formed; the vibration-assisted systems comprise hydraulic vibrators which are arranged on the upper surface of the feeding compression ring, the upper surface of one primary punch head and the surface of the mold, so that the forming process of a complex section is simple, the forming process is easy to control, and the problems of fracture, buckling and wrinkling occurred during the forming process are avoided.
Owner:YANSHAN UNIV

Forging process of automotive besides-star wheel

The invention discloses a forging process of an automotive besides-star wheel, which comprises the steps of: sawing and blanking procedures, and a medium frequency induction heating procedure. The forging method is characterized in that the forging method further comprises the steps of: head and entrance upsetting procedure, combined extruding and pre-forging procedure, and combined extruding and finish-forging procedure after the medium frequency induction heating procedure. When the forging process is used to forge and stamp the automotive besides-star wheel, the procedures of the production process are reduced, raw material is saved, the material utilization ratio is improved, the production cost is reduced, the production efficiency is improved, the quality of the product is guaranteed and the purpose of stabilizing the production process is achieved. Meanwhile, the forging process has low requirement on sawing and blanking, and impact forces to a pre-forging die and a finish-forging die are small, thereby being good for prolonging the service life of the dies and for reducing the requirement on tonnage of the forging equipment.
Owner:江苏南洋中京科技有限公司

Rotary forging method for large disc type work piece and forging device

The invention provides a rotary forging method for large disc type work pieces and a forging device. The method comprises preparing a forging die, preparing blanks, pre-forging a shunt slot, positioning the blanks and carrying out rotary forging in steps. Based on the method, the invention also provides a forging device which can realize relative rotation of an upper forging die and a lower die, and the local forming process for the disc type work pieces can be carried out through rotary forging of the upper forging die and the lower die. In order to control metal flow in the forging process, the procedure of pre-forging the shunt slot is added prior to the rotary forging. Moreover, the upper forging die with a special structure is adopted to overcome the warpage of the work pieces during rotary forging. The forming method has the advantages of low forming load, simple dies and low processing cost, and can greatly reduce the manufacturing cost of existing large disc type work pieces.
Owner:XI AN JIAOTONG UNIV +1

Die-forming method taking non-maximal cross section as die parting face based on combined die

The invention relates to a die-forming method taking a non-maximal cross section as a die parting face based on a combined die. The die-forming method is characterized by comprising the following steps of adopting an upper die, a lower die and a detachable combined type die which consists of a plurality of side dies, selecting a corresponding board, which takes the non-maximal cross section of a middle-section axis of a long-axis variable-section forge piece as the die parting face for die-forming, as die-forming blank; and arranging the upper die and the lower die at the upper side and the lower side of the die parting face of the board blank, fixing the combined type die to the periphery of the board, moving away the combined type die after carrying out one heat die-forming, and taking out a workpiece. According to the die-forming method, die-forming load is effectively reduced by selecting the non-maximal cross section as the die parting face; follow-up machining amount is reduced by adopting a die-forming process, so that a material utilization rate is increased; the board is adopted as die-forming blank, so that blank preparing processes are reduced; one heat forming can be carried out, so that production efficiency is improved; and besides, the follow-up machining amount of the process is small, and comprehensive mechanical performances of the forge piece are improved without damaging a metal flow line.
Owner:TSINGHUA UNIV

Rolling method for specially-shaped alloy steel ring part with section containing suddenly-changing curve

The invention discloses a rolling method for a specially-shaped alloy steel ring part with a section containing a suddenly-changing curve. The rolling method for the specially-shaped alloy steel ringpart with the section containing the suddenly-changing curve comprises the following steps: blanking to obtain an initial blank; preparing a ring rolling blank from the initial blank which reaches a forging temperature requirement; and placing the ring rolling blank in a ring rolling machine, and carrying out ring rolling forming to obtain a forged ring part with the specially-shaped section. Therolling method for the specially-shaped alloy steel ring part with the section containing the suddenly-changing curve is capable of realizing rolling for the specially-shaped ring part with the section containing the suddenly-changing curve; the deformation force needed by the specially-shaped ring rolling is greatly reduced, and the production cost is lowered; the rolling achieves high internal quality and close internal structure, crystalline grains are fine, fibers are arrayed in the circumferential direction, the mechanical strength and the wear resistance are obviously improved, and the fatigue life is obviously prolonged; high product accuracy, a low machining amount and a high material utilization rate are achieved; high production efficiency and a high rolling speed are achieved; the defects of incomplete filling, fishtail pits, dimension deviation and the like in the ring rolling process are solved; and the method is capable of realizing the most economic and efficient batch production as one-process rolling forming.
Owner:BEIJING NORTH VEHICLE GROUP CORP

Forming device and method of low-expansion high-thermal-conductivity SiCp/Al composite

ActiveCN106521251AAvoid secondary pollutionReduce heat pressureThermal conductivityCushion
The invention provides a forming device and method of low-expansion high-thermal-conductivity SiCp / Al composite. The device comprises a base. The base is connected with a beam through vertical pillars. A pressurization device is arranged in the middle of the base and connected with a heating furnace through a position adjusting cushion block. An upper pressing block is arranged on the heating furnace, the two ends of the heating furnace are connected with the vertical pillars through sliding holes correspondingly, and the upper end of the heating furnace is connected with balance weights in the base in a pulley guiding mode through suspension wires. An upper limiting stopper and a lower limiting stopper are arranged on each vertical pillar, and the sliding holes of the heating furnace are located between the upper limiting stoppers and the lower limiting stoppers. The low-expansion high-thermal-conductivity SiCp / Al composite is prepared and formed through links including powder mixing, cold pressing forming, atmosphere hot pressing sintering and the like, all the links are conducted under the atmosphere condition, and a vacuum link is not needed. By using the technology, the technique is simple, the process is short, efficiency is high, cost is low, and the forming device and method of the low-expansion high-thermal-conductivity SiCp / Al composite are very suitable for industrialized mass production.
Owner:XIAN TECHNOLOGICAL UNIV

One-time forming die for U-steel pull rod manufacturing

The invention relates to the technical field of U-steel pull rod manufacturing, in particular to a one-time forming die for U-steel pull rod manufacturing. The one-time forming die comprises an upper die and a lower die, wherein the notch part of the upper die is in an arc shape; the lower die is fixed to a worktable of a punching machine; the upper die is connected to a transmission push rod of the punching machine. The one-time forming die has the characteristics of being low in cost of manufactured products, convenient to use, free of any dangerousness, high in production efficiency and the like. The products manufactured by the one-time forming die in a punching mode are prefect in shape and stable in quality. In addition, as a certain improvement of the upper die of the punching die, the notch part of the upper die is made to be in the arc shape, so that the upper die and the lower die carry out linear cutting instead of planar cutting in the punching process, and the requirement for the tonnage of the punching machine matched with the die is greatly reduced.
Owner:HEFEI HAOCHENG IND & TRADE

Closed-extrusion and molding method of flange

The invention discloses a closed-extrusion and molding method of a flange and belongs to the technical field of pressure machining of metal. The molding method comprises the specific steps of: firstly, preparing a flange blank; then carrying out induction heating on the flange blank at a temperature in range of 950-1200 DEG C to obtain a flange upset piece with an upset end part; putting the flange upset piece into a closed-extrusion and molding mould and then carrying out primary molding by utilizing a closed radial extrusion method to obtain an extruding piece of the flange; and carrying out shaft neck reverse extrusion and molding on the extruding piece, and punching inner holes and fins, and finally machining to obtain the flange. The closed-extrusion and molding method disclosed by the invention utilizes a double-floating concave mould structure of a belt lock hook mould closing device, and the flange upsetting piece in a closed type cavity can be extruded in a radial direction by upper and lower convex moulds. The method disclosed by the invention has the characteristics of compact production process, high material utilization rate, good flange quality and low production and manufacturing cost.
Owner:ANHUI UNIVERSITY OF TECHNOLOGY

Hoisting method of transmission line guyed tower shaped like Chinese character 'gan'

The invention relates to the field of iron tower hoisting, in particular to a hoisting method of a transmission line guyed tower shaped like a Chinese character 'gan'. The hoisting method includes thefollowing steps of S1, ground assembling; S2, hoisting of a tower body and an upper cross arm; S3, unhooking; S4, mounting of a stay wire; S5, hoisting of a lower cross arm; S6, adjusting of the mounting precision of the tower body. According to the structural characteristics of the guyed tower shaped like the Chinese character 'gan', the four parts are assembled respectively on the ground firstly before being hoisted, a split type assembling and erecting method is adopted, the tonnage requirement of a hoisting machine is lowered, damage to plants is reduced, the influences on an ecological system are greatly reduced, and meanwhile the construction cost is also reduced. Ground tower assembling cooperates with tire type hoisting machine tower erecting, most work of iron tower assembling iscompleted on the ground, tower material defects can be found and overcome in the ground assembling process, and construction quality control is superior to that of derrick tower assembling and erecting.
Owner:POWERCHINA SEPCO1 ELECTRIC POWER CONSTR CO LTD

Combined pressure-resistant pipeline inspecting well barrel

InactiveCN102995662AAnti-Aging GuaranteeGuaranteed waterproof and anti-corrosion performanceArtificial islandsSewerage structuresAging resistanceBarrel Shaped
The invention discloses a combined pressure-resistant pipeline inspecting well barrel. The combined pressure-resistant pipeline inspecting well barrel comprises N combined pieces and connecting pieces, wherein the outer-circle arc surface of the combined pieces are provided with horizontal reinforcing ribs and longitudinal reinforcing ribs which are intersected mutually; the left sides and the right sides of the combined piece are provided with connecting edges; the longitudinal section of each combined piece consists of a wellhead section, a well cone section and a well seat section; and all the combined pieces are fixedly connected into a barrel-shaped body. The combined pressure-resistant pipeline inspecting well barrel disclosed by the invention has the advantages that due to the combined structure, the processibility for mold-pressing forming of a product is optimized, the requirements for mold-pressing equipment and the structure and volume of a mold are reduced, and the forming efficiency and qualification rate of the product are improved; since a new high-temperature mold-pressing composite forming process of resin glass reinforced plastic is adopted, the ageing resistance, water resistance and corrosion resistance of the product are guaranteed; and since the longitudinal reinforcing ribs, the horizontal reinforcing ribs and two side surface connecting edges are arranged, the compression capability of the product can be improved, the production, carrying and installation of the product are simplified, the comprehensive cost is reduced, and the service life is prolonged.
Owner:袁建忠

Engine cover punching and liquid filling combined forming technology die and engine cover forming method

ActiveCN107913936ARaise the molding limitImprove qualityShaping toolsPunchingEngineering
The invention discloses an engine cover punching and liquid filling combined forming technology die. The engine cover punching and liquid filling combined forming technology die comprises a female die, a male die and a blank holder. A pressing area and a forming area are arranged on the female die, and the forming area is located in the middle of the pressing material and is concaved and sunk inwards relative to the pressing area. The forming area is provided with a circumferential circle liquid filling groove, a first extrusion formed product face, a first liquid filling formed product face and a first waste technology supplementing face. The male die is provided with a second extrusion formed product face, a second liquid filling formed product face and a second waste face. The first extrusion formed product face and the second extrusion formed product face can be in contact extrusion, the first liquid filling formed product face is opposite to the second liquid filling formed product face in position, and the first waste technology supplementing face is opposite to the second waste face in position. By means of the engine cover punching and liquid filling combined forming technology die, liquid filling forming and punching forming can be finished in the same procedure at a time, the local forming quality of components can be improved, and the requirement of liquid filling forming for the equipment tonnage can be lowered, forming passes are reduced, energy is saved, and the production efficiency is improved.
Owner:ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD

Gear shaft of reduction gear of new-energy automobile and manufacturing technology for gear shaft

The invention discloses a gear shaft of a reduction gear of a new-energy automobile. The gear shaft comprises a rod part and a disc part; the disc part is of a cylindrical structure; a tooth profile structure is arranged on the outer wall of the disc part; the rod part is vertically arranged at the center of the disc part and is divided into an upper rod and a lower rod; and the rod part and the disc part are of an integrated structure formed by forging metal. The invention further discloses a manufacturing technology for the gear shaft. The manufacturing technology comprises the steps that carrying out warm forging forming to form the required shape, then carrying out cold finish forging to form the tooth profile structure, and finally carrying out cutting machining to manufacture a terminal product. According to the gear shaft and the manufacturing technology thereof, traditional cutting gear machining is replaced, the production efficiency is high, raw materials can be saved, and the production cost can be lowered; and meanwhile, the product precision is high, the extrusion forming metal flow line cannot be cut off, the grain structure is compact, the strength of the tooth surface can be improved, the mechanical property of the product is high, and the quality is good.
Owner:江苏威鹰机械有限公司

Preparation technology of intermediate blank of ring piece with C-type cross section

The invention provides a preparation technology of an intermediate blank of a ring piece with a C-type cross section. An alloy ingot is selected and subjected to forging to obtain a workpiece throughforging. According to the preparation technology of the intermediate blank of the ring piece with the C-type cross section, a ring rolling mill is used for preparing the intermediate blank, the tonnage requirement of ring rolling equipment is reduced, and the yield strength of the prepared workpiece can achieve over 350Mpa.
Owner:GUIZHOU AEROSPACE XINLI CASTINGSAND FORGINGS

Production process of oil sump sealing strip of generator set

The invention discloses a production process of an oil sump sealing strip of a generator set. By design manufacturing, the whole oil sump sealing strip can be released by an unwinding manner on the premise of small size of a die to realize the whole die for sulfur adding and forming, so that the oil sump sealing strip is not needed to be subjected to multi-stage vulcanization in a production process; and furthermore, the requirement on the tonnage of vulcanization equipment is low, so that the properties of all aspects, such as the mechanical property and the physical and chemical stability, of vulcanized rubber can be improved favorably. Compared with the conventional oil sump production process, the oil sump sealing strip produced by the production process is low in cost, splicing-free, not easy to break and good in sealing effect; the problems of oil leakage and air leakage are solved.
Owner:萍乡市欧凯孚密封件有限公司

Channel dock

The invention relates to a dock for repairing and manufacturing ships, comprising dock walls at the left side and the right side and a dock floor; a ramp leading to water area is arranged at the frontof a dock entrance; and a dock tail leads to a road or a working place. In the invention, altitude of the dock entrance of the channel dock is higher than mean high tide, and investment on building alarge dock gate is not required, thus a large number of investment and use cost are saved. The channel dock is suitable for manufacturing ships in various scales from ten tonnage level to ten thousand tonnage level, the dock can be manufactured to be long to form a dock production line, the dock tail has no rear dock wall and can be extended into a workshop and a plant, the dock wall thereof canbe connected with a track beam of a portal crane so as to segment the ship and directly transport the segmented ship with materials into the dock by land. The ship launching or upgrading of the channel dock is finished by relying on a track pulley or an airbag.
Owner:钟爱民

One-time forming mold for manufacturing channel steel pull rod

The invention discloses a one-time forming mold for manufacturing a channel steel pull rod, and relates to the technical field of manufacturing of the channel steel pull rod. The one-time forming mold comprises an upper die and a lower die, wherein a cut part of the upper die is in the shape of a circular arc; the lower die is fixedly arranged on a working table of a punch; the upper die is connected to a punch transmission push rod. The one-time forming mold has the characteristics of low product manufacturing cost, convenience in use, no any danger, high production efficiency and the like. The punched product has perfect shape and stable quality; besides, certain improvement is adopted on the upper die of the punch mold; the cut part of the upper die is made to be cambered; in the punching process, linear shearing but not planar shearing is adopted by the upper and lower dies, so the requirement on tonnage of the punch matched with the mold is greatly reduced.
Owner:ANHUI SHENGLIDA ELECTRIC

Electric pulse assisting hot extrusion forming device and forming method

The invention discloses an electric pulse assisting hot extrusion forming device and forming method. According to the electric pulse assisting hot extrusion forming device, temperature, pressure and pulse currents are adopted for acting on a metal blank together, and extrusion plastic deformation happens to the metal blank. Compared with an existing hot extrusion forming device, the electric pulseassisting hot extrusion forming device can reduce forming pressure, reduce wear of an extrusion mold and reduce the requirement for equipment tonnages. Grains of an extrusion profile are refined, second-phase precipitates are finer and are distributed dispersedly, and the mechanical performance and surface smoothness of the extrusion profile are improved. According to the electric pulse assisting hot extrusion forming method, proper temperature parameters, extrusion speed parameters and electric pulse parameters are selected, and therefore the forming pressure can be obviously reduced, the grains can be refined, and the product quality can be improved.
Owner:SHANDONG UNIV

Car automatic transmission sun gear manufacturing process and cold forging extrusion female die adopting process

The invention discloses a car automatic transmission sun gear manufacturing process. The car automatic transmission sun gear manufacturing process comprises following steps of firstly, discharging; secondly, spheroidizing annealing; thirdly, blank making; fourthly, shot blasting; fifthly, lubricating; sixthly, cold forging extrusion forming, wherein a blank obtained after lubricating is put into the cold forging extrusion female die, and through cold forging extrusion, a first-stage transmission gear is formed; seventhly, upsetting, wherein the blank obtained after cold forging extrusion forming is put into an upsetting female die, and a solid shaft segment corresponding to a second-stage transmission gear is formed through upsetting; eighthly, cutting, wherein the blank obtained after upsetting is cut, and a second-stage transmission gear, an annular groove and a hollow shaft are machined; ninthly, heat treatment. Through cold forging extrusion, the sun gear one-stage transmission gear is formed, the small-size sun g ear cutting machining difficulty and the cutting machining amount are reduced, production efficiency is high, the material utilization rate is high, the machining cost is low, the metal assembly line is not cut, the grain structure is compact, the first-stage transmission gear tooth face strength is improved, the mechanical performance is high, the quality is good, and the car part complete requirement is met.
Owner:江苏威鹰机械有限公司

Extrusion breakdown method for high-temperature alloy cast ingot for turbine disc

InactiveCN107282670ASection does not decreaseThe degree of refinement is controllableExtrusion diesExtrusion control devicesIngotGrain structure
The invention discloses an extrusion breakdown method for high-temperature alloy cast ingot for a turbine disc, and the embodiment provides an extrusion breakdown method for difficult-to-deform high-temperature alloy cast ingot for the turbine disc. The extrusion breakdown method comprises the following steps of: (1) designing and manufacturing an extrusion mould with taper; (2) heating difficult-to-deform high-temperature alloy cast ingot blank, and pressing the difficult-to-deform high-temperature alloy cast ingot into the extrusion mould by a press, thereby completing first-pass extrusion; (3) re-heating the extruded blank, re-pressing the blank into the mould in a mode that the upper part of the blank is thin and the lower part of the blank is thick to complete next-pass extrusion; and (4) repeating operation in the step (3) to complete positive-negative multi-pass extrusion, thereby obtaining an extruded part. The extrusion breakdown process is low in tonnage requirement on equipment, is high in raw material utilization rate; and the obtained extruded part is complete in appearance, has section which is not reduced in comparison with that of the blank, has a fine and uniform grain structure, and is remarkably improved in performance.
Owner:AVIC BEIJING INST OF AERONAUTICAL MATERIALS

Alloy powder semi-continuous ingot preparation production device and production method

ActiveCN111283201ARealize automatic deliveryRealize preheating and heat preservationIncreasing energy efficiencyIngotMagnesium alloy
The invention discloses an alloy powder semi-continuous ingot preparation production device and production method. According to the production device and production method, a mode combining powder metallurgy and extrusion deformation processing is adopted for alloy powder, so that large-scale production of alloy powder semi-continuous ingot preparation is achieved, and the production device and production method are suitable for alloy powder cold pressing semi-continuous preparation of a prefabricated ingot, and aluminum alloy and magnesium alloy powder hot pressed sintering semi-continuous ingot preparation, and have a huge economic value and market prospect.
Owner:四川科匠轻金属材料科技有限公司
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