101results about How to "Small deformation force" patented technology

The invention relates to a method for shaping the vehicle hub and relative device. Wherein, it comprises following steps that casting blank; uniform processing; pre-shaping blank; compressing; compressing the front rim; expanding opening and folding the edge at the back rim. The invention is characterized in that: the casting blank via pre-shaping is made into hollow blank; the concave and convex moulds in the compressing step and the compressing front rim step are integrated, while the convex mound contains core axle; the compressing step compresses the hollow blank in the mould via core axle to obtain the cylinder element whose bottom has holes; the step that compressing front rim uses metal diversion to stuff and shape; the step that expanding opening and folding the edge of back rim uses integrated convex mould and separated concave mould to expand opening, fold edge an shape the back rim. The invention can simplify the process, reduce device number, reduce the shaping force, reduce the energy consumption, and reduce the producing cost. The invention is mainly used to produce aluminum and magnesium alloy hub.

The invention discloses a measurement device and a measurement method of early-age linear deformation of cement-based materials; the measurement device comprises: a measurement containing cavity which is provided with an opening at the upper end and composed of a bottom board, a side board and an outer end board, wherein, a sliding template is further arranged on the bottom board, inner end boards are arranged at the both ends of the template, and a separation groove is arranged in the middle of the template for dividing the template into two sliding templates. Compared with the prior art, the sliding template is arranged on the bottom board of the measurement device of the invention, the template is divided into two by the separation groove, when a cement-based material sample is deformed, the displacement thereof can be measured by the sliding template which is bonded with the cement-based materials, the properties of the early-age linear deformation of the cement-based materials can be accurately reflected without the need of waiting for hardening of the cement-based materials. Sliding slots are respectively arranged on the bottom board and the template, rolling balls are arranged in the sliding slots, thereby changing sliding friction into rolling friction, greatly reducing the friction and improving the measurement precision.

A stator disc for a turbomolecular pump has an inner ring (3), an outer ring (4), and a plurality of vanes (2) formed of a stator disc plane, extending between the inner and outer rings (3, 4), and having, in connection regions of the vanes with the inner and outer rings, respective radial webs (5) a circumferential width (S) of which is smaller than a vane width (T).

The invention discloses a method for preparing semisolid aluminum alloy blank forged in big size and comprises the steps of processing a forged aluminum alloy extrusion rod to be sold on the market into a blank 150-225mm long; placing the blank in an environment with a temperature of 400DEG C-420DEG C, keeping the temperature for 1h-3h, and cooling the blank with a furnace at a speed less than 30DEG C/h; and forging the blank by adopting the dynamic loading narrow anvil small deformation technology. The preheating temperature of the anvil is 100DEG C-250DEG C, the contact area of the blank with the anvil is less than 30%, the forging principle of light-heavy-light is followed, and the total deformation degree of the blank is 20%-40%. The heating module of forging technology simulation software is used for optimizing heating technology, and triple heating technology is adopted to realize the quick uniformity and heating of the blank. Therefore, the forged fine semisolid aluminum alloy blank of big size is good in spheroidization, and uniform in grain size. The method solves the problems that the blank is too big to deform uniformly under cold deformation, and that the quick heating of the big blank and the uniformity of the blank temperature are not easy to control.

The invention relates to an automotive rear axle driven bevel gear blank forging production line. The production line comprises the following equipment: preformed blank forming equipment, reaming production equipment and shaping production equipment, wherein the preformed blank forming equipment comprises two crank presses and two matched automatic feeding and discharging mechanisms so as to meet the production requirements of an upsetting step, a hole punching step, a wad punching step and a pre-shaping step, wherein the upsetting step and the hole punching step are carried out by one crank press and one matched automatic feeding and discharging mechanism; the reaming production equipment is a vertical reamer machine; and the shaping production equipment comprises a two-roller rolling machine with a shaping mould, and a matched automatic feeding and discharging mechanism, and the two-roller rolling machine shapes a reamed workpiece on the shaping mould to obtain an automotive rear axle driven bevel gear blank. The production line can effectively improve productivity, eliminates defects of forgings, and effectively saves raw materials by over 10 percent.

The invention discloses a forming method of a spatial curved surface protective plate with internal and external bidirectional stiffener. Firstly the model of the spatial curved surface protective plate is accurately expanded into a two-dimensional plane model, a corresponding CAD model is obtained, and a panel is processed according to the two-dimensional plane model, and a two-dimensional planepanel after the spatial protective plate being expanded and modified is obtained, then a forming die for processing one side stiffener is designed and manufactured, the plane panel is formed by singlepoint plastic processing, and the plane panel including single surface qualified stiffener is obtained, then the plane panel with the formed single surface stiffener is turned over and placed on theforming die for processing the other side stiffener, single point plastic forming is conducted, and an aluminum alloy spatial curved surface protective plate with the internal and external bidirectional stiffener is obtained, finally, a rubber plate is filled with the inner and outer stiffeners of the curved surface protective plate for equal thickness treatment and fixedly sealing, the plane panel is rolled and bended by a three-axis rolling and bending machine, then trimming and polishing are conducted, and thus forming of the spatial curved surface protective plate with the internal and external bidirectional stiffener is completed.

A technology for forging the slide fork includes such steps as heating the blank, transverse rolling by wedge part, clamping the rod part of blank by upper and lower female dies for precise locating, punching by upper and lower punching heads for precisely shaping the fork part, and removing the residual material from the fork part. Its advantages are high precision and long service life of upper and lower female dies.

It is to provide a pneumatic tire in which a bulk modulus of elasticity of a tread rubber is small and an inverse V-shaped bending in a tread portion is suppressed to effectively prevent separation failure, breakage and the like of a belt layer, which comprises a radial carcass, a belt of two belt layers with a cross cord arrangement reinforcing a tread portion at an outer peripheral side of a crown portion of the radial carcass and a rubber reinforcing layer having a crescent-shaped form at a cross section, wherein the tread rubber forming a ground contact face of the tread is made of rubber having a bulk modulus of elasticity of not more than 4 GPa and an additional belt layer of cords having a cord angle with respect to an equatorial plane of the tire larger than that of cords in each of belt layers is arranged on an outer peripheral side of the belt and a compression rigidity of the additional belt layer in a widthwise direction of the tread is made 2 times or more larger than that of the belt layer.

The invention relates to the technical field of kitchen appliances, in particular to a multifunctional flip-top air fryer. The air fryer of the present invention includes a pot body and a cover body, the cover body can be rotatably connected with respect to the pot body, the pot body includes a cavity capable of accommodating a frying basket, and the pot body and/or cover body is provided with a The gap of the handle of the frying basket, the flip-type air fryer also includes an elastic wind-shielding device, the elastic wind-shielding device includes a wind-shielding piece, the wind-shielding piece is arranged at the gap, when the frying basket is taken out, The windshield covers the notch. When cooking without a frying basket, the food is directly placed in the cavity, and the elastic windshield device closes the gap, so that the airflow in the cooking cavity will not be discharged from the gap. On the one hand, the cooking efficiency is ensured, and on the other hand, the hot air flow is prevented. burn the user. Therefore, the air fryer of the present invention can realize cooking through the frying basket or without using the frying basket.

The invention relates to a cooling and lubricating device of a hot-extrusion male die in a hot-extrusion process, in particular to a cooling and lubricating device of a male die in small and deep hole extrusion, which is mainly used for solving the problem that in the hot-extrusion process, a large amount of ejected water for cooling the male die can thoroughly cool the male die, but the temperature is too low and service life can be shortened, and in a fast continuous extrusion process, lubricants cannot be ejected on the male die fast, a punch head is seriously abraded, and service life is short. The cooling and lubricating device adopts an annular nozzle to be sequentially connected with a throttle valve, an electric control on-off valve, a water pump and a lubricant box through pipelines, and the electric control on-off valve is connected with an auxiliary switch for controlling the electric control on-off valve to be on and off. The cooling and lubricating device adopts spraying from down to top, ensures temperature of the male die not to be overlow by controlling flow of the lubricants, spraying time and positions, leads the lubricants to be left on the male die evenly and form a protection layer on the male die, accordingly delays temperature rising of the male die and prolongs service life of the male die.

The disclosed liquid seal anti-vibration device is provided with: an inner tube (1) and outer tube (2); rubber bodies (3, 4) connecting said inner and outer tubes (1, 2) in a liquid-tight manner at two positions separated in the axis direction; a partition wall which, disposed between the two rubber bodies (3, 4), divides into two parts in the axis direction the space between the inner and outer tubes and which comprises an annular rigid member (5a) and an elastic member (5b); liquid chambers (8, 9) formed by sealing a noncompressible fluid in each of the spaces formed by the partition wall (5); and a restricted passage (7) allowing communication between the two liquid chambers (8, 9) formed by the partition wall (5). The aforementioned partition wall (5) is configured from the annular rigid member (5a), which protrudes from the inner tube (1) towards the outer tube side, and from the elastic member (5b), which connects said annular rigid member (5a) to the outer tube (2). The aforementioned restricted passage (7) is configured from one or multiple passage grooves (5c), which, formed on the outer peripheral surface of the annular rigid member (5a), extend at least one time around the circumference thereof, and from a bounding rigid tube member (6) which, attached to the aforementioned elastic member (5b), seals the openings of the passage grooves (5c) via a seal member (5d) in a liquid-tight manner.

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 preparation method of a carbon steel tube/stainless steel tube composite tube, belonging to the technical field of bimetal composite tube preparation. The preparation method is characterized by firstly sleeving two metal tubes subjected to deoiling, acid pickling and polishing with a wire brush together, secondly inserting a core rod into the carbon steel tube, carrying out plastic processing on the two metal tubes once or multiple times, thirdly carrying out finishing and drawing treatment, and finally washing the inner and outer surfaces and cutting the head and the tail, thus obtaining a finished product of the composite tube, wherein the total wall thickness reduction rate during plastic processing is 20-80%; the wall thickness reduction rate of the final pass is 10%; the feeding angle of a plastic processing hammer head is 90 degrees; the discharge speed is 1-5m/min. The carbon steel tube/stainless steel tube composite tube comprises a stainless steel inner layer and an outer layer, wherein stainless steel is an alloy of pure stainless steel and deforming stainless steel. The method has the advantages that not only can the bimetal composite tube with high bonding strength be obtained but also the equipment is simple, the production flexibility is high and the cost is low.

The invention relates to an overlapping type combined forging method. The overlapping type combined forging method is characterized by comprising the steps that two or more parts are overlapped and combined into a connected part, then the chipping allowance is added to the outer surface of the connected part to form a combined die forging, after combination, from the projection areas, the small forging is wrapped by the large charging, the projection area of the large forging is not increased, and the combined die forging or the connected part is separated through blanking, heating, die forging and cutting machining. By means of the reasonable combination and the selected proper separation method, forgings which cannot be subjected to combined forging in a traditional method can be forged through the combined forging method, and the combined forging application range is widened. After the overlapping type combined forging is formed, two or more forgings consume one finishing allowance jointly, and therefore material consumption is reduced. A cutting separation face can be directly used as a finish machining locating basis, and the effects of saving materials, reducing deformation force and improving the production efficiency can be achieved.

The invention discloses a method for preparing tungsten copper alloy wire materials by using hot-swage technology, comprising the following steps: weighing copper powder, tungsten powder and weighing glycerol as additive by weight percentage, mechanically mixing the three ingredients; putting the mixed viscous fluid with a certain fluidity in a graphite die; pre-buring in a vacuum sintering furnace; sintering the infiltrated copper in the furnace under the protection of hydrogen or helium; finally processing by hot-swage and centerless grinding to obtain wire materials with a certain diameter and random lengths. The invention has the advantages of simple technology, convenient operation, low cost, and stable performace, high quality and high yield of the products, solves the problems of complicate technology and high cost of preparing slender tungsten copper material existed in the prior art, and can be widely used in material processing of electrode, LED lamp and plasma.

The invention belongs to the field of wheel-shaped part hot forging forming, and particularly relates to a train wheel rotary forging forming method. The method comprises the following steps that a, acontinuous casting steel billet is cut to obtain a blank with the diameter phi being 380*432 mm and heated to 1200 DEG C; b, a precast blank is obtained through a pressure machine, particularly, theblank is subjected to upsetting and punching on the 50MN pressure machine to form the precast blank, and the hole diameter and outer diameter of the precast blank are controlled in the working procedure to be approximate to the size of a cavity which is adopted during rotary forging final forming; c, rotary forging preforming is carried out, particularly, a preformed blank is obtained from the precast blank on a first rotary forging press, metal at the positions of a well disc, a hub and a rim needs to be reasonably distributed according to preformed blank materials, and therefore the cavity of a die can be completely filled with the metal when the rotary forging is finally formed; and d, rotary forging final forming is carried out, and particularly, a train wheel rotary forged part is formed from the preformed blank on a second rotary forging press. The problems and defects existing in existing train wheel forming methods are well solved, the train wheel size precision and concentricity can be improved, the cutting amount can be reduced, large-power forming equipment is not needed, and the working environment of workers is improved.

The invention relates to a variable-speed liquid filling-ultrasonic-laser composite forming method and system for a thin-wall component, which is used for forming a metal or composite material ultra-deep cavity complex feature component, forming an ultra-deep cavity feature by utilizing an ultrasonic vibration coupling passive liquid filling forming technology, and forming a complex small feature by utilizing a laser coupling high-speed liquid filling forming technology. According to the method, the forming limit, the forming quality and the complexity of the thin-wall component can be effectively improved, and the defects of cracking, wrinkling and the like in the forming process are reduced. The method has wide application prospects in the high-speed carrying fields of aerospace, automobiles and the like, especially in the aspect of integrated forming of ultra-deep-cavity thin-wall components with multiple complex characteristics, the forming performance of the plate is greatly improved, the blank in the forming field of the ultra-deep-cavity components is filled, the complexity of the formed components is widened, and the forming quality is improved.

The invention relates to a reforming method and a mold of an automobile rear axle driven gear forging piece; the method comprises the following steps: prepare a semi-finished product-a chambering piece of the driven gear forging piece, place the manufactured chambering piece into a reforming mold cavity and reform the driven gear forging piece; the mold comprises a male mold, a female mold and a stripper plate, wherein the female mold is composed of a floating mold and a closed cavity formed by a pair of rollers; the invention can effectively reform the chambering piece of the driven gear, eliminate the disadvantages of concave pit, oval shape and distortion of the surface of the chambering piece, adopt equipment with low load and simple structure can effectively reform the driven gear forging piece of the automobile rear axle and saves more than 10 percent of raw material; for instance, the driven gear forging piece with 430mm of outer diameter is reformed, the needed load is 6300kN and the blanking weight is 36 kilograms.

The invention relates to a construction method of a long-span steel truss suspension structure. The construction method comprises the following steps that supporting jig frames and steel rib frame columns are erected at set positions; steel rib frame beams and supporting columns are spliced layer by layer from bottom to top; multiple web rods are spliced at a top layer to form a steel truss structure; concrete wrapping the steel rib frame columns is poured layer by layer from bottom to top so as to form steel-reinforced concrete columns and concrete floors wrapping the steel rib frame beams, and later-poured areas are reserved at the ends of the concrete floors; after the concrete columns and the concrete floors to be located on the top layer solidify, the reserved later-poured areas are poured layer by layer from bottom to top, and connecting structures for connecting the corresponding concrete floors with the steel-reinforced concrete columns are formed in each layer. The top load ofa steel structure frame is completed borne by the supporting jig frames and the steel rib frame columns, and the structure has better stress stability. The connecting structures are constructed afterthe later-poured areas are utilized, the problem can be solved that beam-column nodes of the floors are likely to crack.