1032results about "Heating/cooling devices" patented technology

A method for producing a tubular bar, more particularly a stabilizer bar, is provided. The method comprises providing a tubular bar of desired size having an outer and inner surface, heating the bar to an elevated temperature, quenching the bar by application of a cooling fluid to the surfaces of the bar, and forming the tube to a desired shape without annealing. The method further provides for the composition of a high-strength, high formability carbon steel alloy to be used in conjunction with the method. Advantageously, the bar is formable without thermal processing subsequent to quenching. In this fashion, metal tubular bars, such as stabilizer bars, may be formed at reduced cost.

Various embodiments of roller hemming apparatus and methods are disclosed including one wherein multiple rollers are carried on a single mount to hem a flange in a single pass, another including induction heating and air quenching means movable with a roller to anneal the flange just prior to hem forming, and another in which friction from a rotatably driven roller heats the flange to reduce bending stresses during hemming of the flange.

Methods of refining the grain size of a titanium alloy workpiece include beta annealing the workpiece, cooling the beta annealed workpiece to a temperature below the beta transus temperature of the titanium alloy, and high strain rate multi-axis forging the workpiece. High strain rate multi-axis forging is employed until a total strain of at least 1 is achieved in the titanium alloy workpiece, or until a total strain of at least 1 and up to 3.5 is achieved in the titanium alloy workpiece. The titanium alloy of the workpiece may comprise at least one of grain pinning alloying additions and beta stabilizing content effective to decrease alpha phase precipitation and growth kinetics.

The invention discloses a forging method for high temperature resistance titanium alloy large-size bars used for engines. The method comprises following steps: firstly, performing three-heating cogging and forging on ingot casting then performing multi-heating isothermal reforging on the forging stock at two-phase region; Finally, heating at 60 DEG C to 80 DEG C under phase transition point, , to obtain WSTi64311SC titanium alloy bars. According to the method of the invention, octagonal forging is carried out on the forging process of each heating of WSTi64311SC titanium alloy bars so as to avoid non-uniform deformation or dead zones; blank material is wrapped by asbestos so as to avoid cracks due to temperature reduction in the blank material. Besides, three-heating cogging is carried out above the phase transition point so as to guarantee uniform organization of the blank materials; the large size WSTi64311SC titanium alloy bars having uniform and blurred macrostructure and equiaxial and fine microstructure are obtained.

The hot forging process of high temperature large alloy turbine disc includes the following steps: 1) conventional upsetting and drawing to form cylindrical alloy blank of 730 mm diameter with electroslag ingot of 900 mm diameter; 2) low temperature heating the blank at 900 deg.c, coating the sides with diathermic cotton, further heating to stipulated temperature and maintaining for prolonged 5 hr; 3) upsetting the blank to intermediate blank of 1700 mm diameter through the first traditional process to machining limit of the press and then local deforming with rectangular upper anvil of width below 400 mm; 4) coating the lower surface of the circular cake blank and heating in furnace for 2 hr; and 5) final rotary forging for local deformation with upper anvil of width of 200 mm and rotating angle of 15 deg to forge the intermediate blank of 1700 mm diameter into finished product of 2000 mm diameter in the reducing amount of 25 mm and deformation amount of 35 %.

The invention discloses a full-automatic bearing ring forging line which comprises a preheating furnace, a material shearing punching machine, a heating furnace, a pneumatic punching machine, a rolling machine and a shaping punching machine. The full-automatic bearing ring forging line is characterized by further comprising a stamping manipulator, a rolling manipulator and a shaping manipulator, the rolling manipulator is arranged right ahead the rolling machine, the shaping manipulator is arranged in the front of the shaping punching machine, the stamping manipulator comprises a left frame, a right frame, a front clamp arm and a rear clamp arm, the left frame and the right frame are arranged on the left side and the right side of the pneumatic punching machine respectively, the front clamp arm and the rear clamp arm are arranged on the upper portions of the left frame and the right frame in a crossing manner, paired clamping jaws are arranged on the two clamp arms, the left ends and the right ends of the two clamp arms are provided with clamp arm front and rear sliding driving devices, and the left ends of the two clamp arms are further provided with clamp arm left and right sliding driving devices. The labor intensity of workers is relieved, the working environment of operators on a forging site is obviously improved, labor cost is reduced, and production efficiency and blank quality are obviously improved.

The invention discloses a method for forging and sleeve packaging of an ultra-large type nickel-base superalloy turbine disc and relates to a method for heating and sleeve packaging of nickel-base superalloy during the forging process of a turbine disc. The method for forging and sleeve packaging of the ultra-large type nickel-base superalloy turbine disc is realized through the following steps: Step 1, heating and heat preserving an original cylindrical superalloy blank; Step 2, performing heat packaging on the superalloy blank after heating and heat preserving; Step 3, remelting the superalloy blank for heating and heat preserving after heat sleeve packaging. The method, disclosed by the invention, solves the problems that a traditional sleeve packaging method causes the superalloy blank to be heated for an unnecessarily long time in a furnace, a soft sleeve is easy to fall off and the clamp is easy to damage, can effectively solve the problem that the temperature of the superalloy blank is decreased during the delivery and forging processes, avoids cracking of a forge piece during the deformation process, effectively reduces the deformation resistance of the forge piece, and can obtain ideal crystalline grain structures.

The invention discloses a process for manufacturing a backward gear of an automobile gearbox, comprising the following procedures of blanking, blank forming, shot blasting, warm forging forming, annealing, shot blasting, lubricating, cold finished shaping, turning, gear shaving and carburizing. In the invention, the difference between the warm forging forming, a hot precise forging and a cold precise forging is the heating temperature of the blank, the heating temperature is 750-800 DEG C, under the temperature, the blank just exceeds eutectoid reaction isothermal line, after the material structure is just transformed into Austenite, the blank is sent to the preheated mould to carry out a forging shaping process. The lubricating procedure is that the outer surface of the blank is coated with a macromolecular lubricant. The clod finished shaping procedure is that a standard gear mould is used for correcting the gear formed by the warm forging forming procedure at the normal temperature. In the invention, the advantages of the hot precise forging and the cold precise forging are comprehensively applied, and the process is especially suitable for the technique for manufacturing the backward gear of the automobile gearbox in large scale.

The invention relates to an iron sheet forging device, and particularly relates to a rapid iron sheet forging device for hardware. The invention aims to solve the technical problem of providing the rapid iron sheet forging device for hardware, which has the advantages of good forging effect, simplicity in operation and high stability. In order to solve the technical problem, the invention provides the rapid iron sheet forging device for hardware. The rapid iron sheet forging device comprises a bottom plate, a left side plate, a first guide rod, a first sliding rail, a top plate, a push rod, a fixed stop block, a carbon fire box, an electromagnet, a first sliding block, a motor, a gear, a vertical plate, a transverse plate, a second guide rod, a lifting rod, a rolling shaft, a first connecting rod, a hammer, a second belt pulley and the like, wherein the left side plate, the first guide rod and the first sliding rail are arranged on the bottom plate in sequence from left to right, and the top plate and the like are arranged on the right side of the left side plate in sequence from top to bottom. The invention provides the rapid iron sheet forging device for hardware, the effects of good forging effect and high stability are achieved by utilizing a water tank and an inclined plate, and the rapid iron sheet forging device is operated only by controlling the motor.

The invention relates to 4Cr5MoSiV1 hot work die steel, in particular to a preparation method for improving the performance of the 4Cr5MoSiV1 hot work die steel. The preparation method comprises the steps of producing highly-clean steel ingots with the total oxygen content being 12 ppm by adopting electric furnace smelting, vacuum carbon deoxidizing and slag surface diffusing and deoxidization refining, adding the pure rare earth La and Ce on the oxygen control condition and carrying out argon shield pouring; carrying out diffusing and homogenizing annealing on the steel ingots and upsetting and drawing forging on the steel ingots in the three-dimensional directions three times, fast cooling the steel ingots through water and air alternately after forging, carrying out the processes of fast cooling after ultrahigh-temperature austenitizing and spheroidizing annealing before quenching, carrying out tempering with the temperature not lower than 590 DEG C 2-3 times after quenching, and finally obtaining the stable tempered structure of the 4Cr5MoSiV1 hot work die steel. According to the invention, the single notched impact property KV2 of the 4Cr5MoSiV1 hot work die steel is greater than or equal to 25 J, the average notched impact property KV2 is greater than or equal to 30 J, the single non-notched impact energy is greater than or equal to 280 J, the average non-notched impact energy is greater than or equal to 320 J, the ratio of the transverse non-notched impact energy to the longitudinal non-notched impact energy is greater than or equal to 93%, and the isotropy is excellent.

The invention discloses a conversion flange forge piece forging and thermal treatment technology. The technology comprises the following steps of 1, smelting raw materials; 2, performing forging and heating; 3, performing forging, wherein the forging process includes three heating numbers; 4, performing thermal treatment, wherein the thermal treatment process includes the first-time forging normalizing process, the second forging normalizing process and the tempering process; by improving the steel ingot ingredients and structures and the forging technology, the inherent quality of a forge piece is improved, the grain is refined, and non-uniformity is eliminated. According to the forge piece manufactured by adopting the technology, the product performance can be improved, and the service life can be prolonged.

The invention discloses an isothermal beta forging method for a TC17 titanium alloy blade, and the problem that the process requirement of existing TC17 blisk forging is high can be solved to a certain extent. The process requirement of TC17 blisk forging is high, and the machining requirement of forge pieces in the machining link is quite high. Machining errors in machining of the blade can cause scrapping of a whole blisk forge piece, time and labor are saved, and the economic cost is high. A wheel disc and the blade are forged separately, the identical isothermal beta forging method is adopted for the blade and a compressor blisk, and thus the forging forming difficulty is low, and subsequent machining is greatly facilitated.

The invention provides an upsetter mould cooling and lubricating device. A PLC (programmable logic controller) is connected with three diaphragm electromagnetic valves through leads, one of the three diaphragm electromagnetic valves is communicated with a compressed air source, input ports of the other two diaphragm electromagnetic valves are connected with a water pump through conduits, a compressed air agitator is mounted in a water-based graphite pool, the two diaphragm electromagnetic valves are respectively connected with a universal graphite nozzle and an adjustable sprinkler through conduits, the upper end of the diaphragm electromagnetic valve communicated with the compressed air source is communicated with the mounted compressed air nozzle through a conduit, an upper grinding tool is mounted on an upper mould plate of an upsetter in an embedded manner, and a lower grinding tool is mounted on an lower mould plate of the upsetter in an embedded manner. The upsetter mould cooling and lubricating device can realize quick cooling, lubricating and cleaning of moulds, improve automatic level and production efficiency and is suitable for the moulds in upsetting processes.

The invention discloses a lubricating and cooling jet nozzle for a multi-station automatic cold header, comprising an oil fluid jet pipe and an airflow jet pipe coaxially sleeved out of the oil fluid jet pipe; wherein an oil inlet is arranged at the tail end of the oil fluid jet pipe; a shrinkable oil fluid nozzle is arranged at the front end of the oil fluid jet pipe; an air inlet is arranged at the tail part of the airflow jet pipe; an annular clearance between the inner peripheral wall of the airflow jet pipe and the outer peripheral wall of the oil fluid jet pipe forms an airflow channel; an annular air nozzle is arranged at the front end of the airflow jet pipe; the successive cylindrical oil jet jetted from the shrinkable oil fluid nozzle and the annular airflow jetted from the annular air nozzle form oil-air binary air-in-oil concentric jet flow, the oil and the air are not mixed, so that the low-pressure oil fluid under the holding of high-speed airflow is jetted to the surface of headed material and contact surface between the mold and the headed material during operation, the penetrability of the oil fluid molecule on the surface of the headed material and the contact surface between the mold and the headed material is higher, so that the lubricating and cooling effects are more sufficient, and the effects are maximized.

A bending apparatus for manufacturing a bent member from a steel pipe with high dimensional accuracy and high productivity can be installed in a small space with good maintainability. The apparatus has a feed mechanism for feeding a steel pipe in its lengthwise direction, a first support mechanism for supporting the steel pipe while feeding it, a heating mechanism for heating a part or all of the steel pipe being fed, a cooling mechanism for cooling the portion of the heated steel pipe being fed, a second support mechanism for imparting a bending moment to the heated portion of the steel pipe to bend the steel pipe into a desired shape by moving two-dimensionally or three-dimensionally while supporting the fed steel pipe in at least one location, and a deformation preventing mechanism for preventing deformation of the steel pipe. The feed mechanism is a vertically articulated robot having seven axes.

The invention provides an ultrasonic vibration-assisted metal micro die forming device which comprises a lower die holder, a female die, a female die base plate, a female die fixing plate, an ejector rod, an ejection screw, a piezoelectric element, a male die, a male die fixing block and a pressure sensor, wherein the female die fixing plate is fixedly arranged on the upper surface of the low die holder, both the female die base plate and the female die are embedded into the female die fixing plate, the female die is fixedly arranged at the top of the female die base plate, the ejection screw penetrates through the center of the lower die holder and extends into the female die base plate, the ejector rod is arranged at the bottom of the female die, the male die fixing block is arranged at the top of female die fixing plate, the male die is embedded into the bottom of the male die fixing block, the piezoelectric element is arranged at the top of the male die, and the pressure sensor is arranged at the top of the piezoelectric element. The ultrasonic vibration-assisted metal micro die forming device has the advantages that a required micro die casting part can be formed directly with an ultrasonic vibration-assisted metal micro die forming method, secondary processing is avoided, the processing efficiency is improved, and the cost is low.

Nickel-based superalloys have good hot workability and superior gold comprehensive properties, and can be used in the production of high-strength disc forgings. The present invention proposes a forming method of nickel-based superalloy blades with small margins, vibrating light decoration, special extrusion die and fire for extrusion die forging, etc., which can increase the material utilization rate to more than 60-70% , which saves the cost and should reach the level that the grain size difference between the tenon and the blade body is less than or equal to 2 levels. To a certain extent, the forming method can make up for the mass production of blades with small margins of nickel-based superalloys.

The invention relates to steel plate hot forging continuous production equipment comprising a loading assembly, a heating assembly and a forging and pressing assembly. The heating assembly comprises aheating furnace. The heating furnace is internally horizontally provided with a conveying device, the forging and pressing assembly comprises a base, the upper surface of the base is flush with the upper surface of the conveying device, the length direction of the base is the same as the conveying direction of the conveying device, and the base comprises a temporary storage table capable of abutting against one end of the conveying device and a working table with one end abutting against the other end of the temporary storage table; the upper side, corresponding to the working table, of the base is provided with a forging and pressing head capable of doing reciprocating motion in the vertical direction, the two sides of the base are each provided with a moving frame and a first driving mechanism capable of driving the moving frame to move in the length direction; and the sides, getting close to each other, of the moving frames are provided with clamping plates with the length the sameas the length of the base and second driving mechanisms capable of driving the clamping plates to move in the direction getting close to each other. The steel plate hot forging continuous productionequipment can realize automatic continuous work from heating to forging and pressing of a workpiece, the working efficiency is improved, and the dangerous effect is reduced.

The invention relates to a forming mould of a magnesium alloy thin-web high-reinforcement forging, in particular to a forming mould of a high-toughness magnesium alloy thin-web high-reinforcement forging with a flow-dividing bin, solving the problems of insufficient filling, overlarge deformation resistance and the like in the forming process of the traditional thin-web high-reinforcement forging. The split line of a split hollow mould is just coincided with an edge of the forging to be formed; the molded surface of a convex mould and the molded surface of the split hollow mould correspond to each other and form a cavity, the inner side wall of the first split part is provided with a circular-arc rib-plate cavity communicated with a pressure-relief discharge port; the circular-arc rib-plate cavity is 5-10 mm deeper than the actually formed forging, and a cavity of a deepened part is a circular-arc rib-plate flow-dividing bin; the upper sides and the lower sides of two triangular rib-plate cavities are 5-10 mm higher than the actually formed forging, and the cavities of the heightened parts form four triangular rib-plate flow-dividing bins. Because a plurality of flow-dividing bins are arranged in the proper positions of the cavities, the flow resistance and the flow direction of metal are improved, the closed precise mould forging of magnesium alloy is realized, the forming precision of parts and the qualified rate of a finished product are improved and the mould pressure is reduced.

The invention discloses a forging technology of an aviation engine blade based on nickel base superalloy and belongs to the technical field of aviation forging. The forging technology comprises the following steps:feeding, coating a bar with a lubricating agent, upsetting and heating, upsetting, cleaning a forging stock, coating the forging stock with the lubricating agent, carrying out finish forging and heating, carrying out finish forging, carrying out side cutting, correcting heating, correcting, cleaning a forge piece, and carrying out thermal treatment and final inspection. The aviationengine blade forged through the forging technology disclosed by the invention is fine and uniform in crystalline grain, and the grain size is grade 9-10; the phenomena that nickel base superalloy is likely to have coarse grain and/or mixed crystal during the forging process are overcome, and the tensile strength can reach 200KSI or above; the forge piece of the blade is complete in outline and isfree of defects including crack, fold and the like, and the machining allowance, mechanical property and the metallographic structure meet the design requirements.A novel selection approach is provided for producing the nickel base superalloy based engine blade with fine and uniform crystalline grain and high tensile strength; and the blade forge piece product can meet the using requirements of the shape and the size of the aviation engine blade.

The invention relates to a process for forming a moderately-strong heat-resisting magnesium alloy die-forged piece. Magnesium alloy comprises, by mass, 7.5%-9.0% of Al, 0.02%-0.80% of Ag, 0.35%-0.55% of Zn, 0.05%-0.20% of Mn, 0.1%-0.10% of RE and 0.001%-0.020% of Ca, the balance of Mg and impurity elements which can not be removed. The method includes the steps that an alloy ingot is formed through semicontinuous casting; the ingot is subjected to double-stage homogenizing annealing; the ingot is subjected to multidirectional variable-temperature forging at the temperature ranging from 350 DEG C to 410 DEG C after being subjected to annealing, and the annealing temperature is reduced by 10 DEG C to 20 DEG C after each time of annealing deformation; the ingot is subjected to isothermal forging at the temperature ranging from 350 DEG C to 400 DEG C after being subjected to multidirectional variable-temperature forging; aging of the die-forged piece is carried out and lasts for 20 hours to 30 hours at the temperature ranging from 170 DEG C to 200 DEG C. The magnesium alloy die-forged piece manufactured through the method is larger than or equal to 360 MPa in tensile strength, larger than or equal to 255 MPa in yield strength and larger than or equal to 7% in elongation percentage at an indoor temperature after the aging process.