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

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.