33results about How to "Solve forming difficulties" patented technology

A forming method and forming mold for a semi-closed thin plate part, the forming mold includes a base and an inner tire, the base is provided with a concave cavity matching the shape of the bottom of the part, and the inner tire contains a left inner tire , the right inner tire and the support core, place the bent part on the cavity of the forming mold base, and then fill the left inner tire, right inner tire and support core in the bent part in turn Cavity, use positioning pins to fix and position the forming parts, and finally disassemble the forming mold, remove the process lugs, and correct the external dimensions of the parts.

The invention relates to an ultrahigh-strength steel laser tailor welded blank and a forming process thereof. The forming process provided by the invention comprises the following steps: carrying out the laser tailor welding on ultrahigh-strength steel and high-strength steel according to the needed shape; then, delivering the obtained welded blank to a furnace filled with a protective gas and heating to 920-940 DEG C to be continued for at least 5 minutes; fully austenitizing; transferring the austenitized welded blank to a press machine to be rapidly molded and formed; cooling to 100-150 DEG C through pressurization quenching; and cooling along room temperature to obtain the needed parts. The hot stamping process of the laser tailor welded blank provided by the invention has the double advantages of the forming and hot stamping forming of the laser tailor welded blank and simultaneously solves the problems that the ultrahigh-strength steel is difficultly applied to the production ofautomobile structural components / framework components in a laser tailor welded blank mode.

The process of forming artificial joint of nanometer bioceramic relates to nanometer ceramic material forming technology, and aims at solving the problem of forming complicated shape ceramic product. The process includes the following steps: 1. hot pressing and sintering composite Al2O3 / ZrO2 powder or ZrO2 / HAP powder to prepare nanometer ceramic block; and 2. closed die forging to form ceramic product at high temperature. By means of the twice forming process, the present invention can form ceramic part of complicated shape. The present invention has the advantages of simple forming process, easy manufacture of mold, low cost, etc.

The invention relates to a method for forming parts with a tapered rubber tube, which includes the following steps: Step 1: Put the tapered tube blank on the sealing assembly with the tapered rubber tube, and put the sealing assembly with the tapered tube blank into the lower mold In the floating block of the tire, make the axis of the two ends of the conical tube blank parallel to the working table of the equipment, and the equipment drives the upper mold tire to go down, so that the floating block of the upper mold tire is in contact with the floating block on the lower mold tire ;Step 2, forming stage: the upper mold tire continues to move down to lower the axis of the two ends of the conical tube blank to the preset position and maintain the preset tonnage. There is a liquid inlet on the sealing component, and the liquid finally enters through the inlet In the tapered rubber tube; the present invention also provides a device for forming parts of the tapered rubber tube.

The invention provides a forging method for deformed short T-shaped blank, and the forging method solves the problem that forming of deformed short T-shaped blank is difficult, and relates to the technical field of forging-pressing. The forging method for the deformed short T-shaped blank comprises the following steps: a first step of placing the lower end part of rod-shaped blank into a heading lower mould cavity, placing the upper end of the rod-shaped blank into a heading upper mould cavity, pressing a heading upper mould along a heading lower mould until a bump part is formed between the upper end part of the rod-shaped blank and the lower end part of the rod-shaped blank, thereby forming first intermediate blank. The forging method solves the difficult forming problem of the deformedshort T-shaped blank. An inner metal flow line of the integrally formed deformed short T-shaped blank is good, and an aviation product processed by the inner metal flow line is good is in integral performance, so that weight of the aviation product can be relieved on the premise of meeting performance requirements, and therefore, product competitiveness is improved.

The invention belongs to the technical field of rolling and particularly relates to a rolling forming process for a flat plate with a convex rib. The rolling forming process comprises two rolling stages, wherein in the first stage, a to-be-rolled plate is subjected to single-pass rolling or multiple-pass rolling to form a top-convex and bottom-concave plate with a convex rib on the upper surface and a concave structure on the lower surface; in the second stage, the lower surface of the top-convex and bottom-concave plate is subjected to single-pass rolling or multiple-pass rolling so as to beflattened, and a flat plate which has an upper surface with the convex rib and a flat lower surface is obtained. With the adoption of the process, the convex-rib type structure can be formed on the flat plate; in the plate rolling process, the convex rib can be accurately formed while a bottom plate is rolled to be flat; the problem that the convex rib is difficult to form on the premise that thebottom plate is flat in the rolling process of a special-shaped plate is solved.

The invention discloses a cold stamping process of a heavy-duty off-road vehicle frame reinforcing plate. The reinforcing plate is a symmetric product, the section of the product is of an L-shaped structure, the bending circular bead radius is R1, two theta-degree bends are arranged in the longitudinal direction, the bending circular bead radii are R2 and R3, the material thickness ranges from 8 mm to 12 mm, the yield strength ranges from 450 MPa to 600 MPa, and the process comprises the steps of discharging, rolling forming, bending and separating. Flexible forming is achieved, product quality is improved, the problems that forming is difficult and cracking defects exist in the circuitous process can be solved, two products are formed at a time, production efficiency is improved, a general production device is adopted, mold development cost is saved, the product development period is shortened, and the advantages of being good in product quality, low in labor intensity, high in production efficiency, capable of saving cost and shortening product development period can be achieved.

The invention discloses a method and a device for rolling forming ultra-thin wall tubes. The device comprises a spindle, a limiting bracket, and a power device, and further comprises a roll wave device and a shaping device. The roll wave device comprises a plurality of roll wave brackets and variable diameter mandrels. Roll wave dies are arranged on the roll wave brackets. The shaping device comprises a plurality of shaping brackets, and roll flat dies are arranged on the shaping brackets. The spindle, the roll wave brackets and the shaping brackets are connected with the power device. According the method and the device, in the preforming stage of tube blanks, a stepping rolling method is adopted for machining, so that the problem of difficulties of a traditional rolling forming mode is solved, and the problem of excessive thinning of traditional rolling tube blanks caused by that materials cannot flow into wave troughs when multiple waves are rolled synchronously is solved; and in the shaping stage of the tube blanks, the stepping rolling method is adopted for machining, so that the flow resistance of the materials in the deformation process is reduced, and the situation that thematerials are evenly distributed around tube walls after shaping is ensured.

The invention belongs to the related technical field of component forming manufacturing, and discloses an electromagnetic gradual flexible composite forming method. The electromagnetic gradual flexible composite forming method comprises the following steps: providing an electromagnetic forming device, wherein the electromagnetic forming device comprises a discharge assembly, a multi-point supporting mould and four hydraulic cylinders, and the mould surface of the multi-point supporting mould consists of multiple discrete basic bodies; adjusting the basic bodies to form a top mould surface, and moving the hydraulic cylinders to tightly press a plate component; gradually moving a discharge coil along the top mould surface, gradually discharging the discharge assembly along with movement of the discharge coil, and gradually moving the plate component towards a direction away from the discharge coil till the plate component is fitted with the top mould surface; readjusting the heights of the basic bodies to form a new top mould surface, and reclamping the plate component; re-moving the discharge coil, and gradually discharging the discharge assembly till the plate component is fitted with the new top mould surface; repeating the steps till the plate component has a target shape. By the electromagnetic gradual flexible composite forming method, wrinkling is avoided, the thinning amount and the resilience are reduced, and uniform deformation of the plate component is achieved.

The invention was involved in producing pure tungsten with high-density ultra-fine grain at low temperature for one time. The temperature was 350-400deg.C and pressure was 5-6.5Mpa. Supersonic spray heat change was used to produce nano-WO3 powder, the diameter was lower than 40nm. Blue tungsten powder was formed in nanometer grade by deoxidation-oxidation-deoxidation reaction. Then adding furfural- phenolic aldehyde-ethyl carbinol solution, blue tungsten powder was coverd by furfural organic film after mixing by twin-screw agitator. Blue tungsten powder was deacidize in tungsten powder whose diameter was lower than 70nm in the continuous rotary furnace in fluid bed and the nano-tungsten powder was sheared and activated in dry-type high-speed interlaminar shearing machine. Tungsten powder pressed blocks were produced with high-pressure soft dies. Pure tungsten ultra-fine grain with 95%-96% relative density was produced at low temperature for one time and the tungsten crystal grain was smaller than 8-12um.

The invention discloses a microchannel heat exchanger with multistage microchannels and a manufacturing method thereof. The microchannel heat exchanger is composed of an upper cover plate, a lower cover plate and a metal microchannel base body. The metal microchannel matrix includes a number of microchannels arranged in parallel and spaced arrays, and the two side walls of the microchannels respectively have a raised secondary microchannel structure in an array, and the secondary microchannels are symmetrically distributed in the microchannels, It can significantly increase the heat exchange area, enhance the turbulence, and realize enhanced heat exchange. The preparation method is as follows: firstly process trapezoidal grooves with an array on the work roll to form a V-shaped boss; change the axial translation amount and pressing depth of the work roll with grooves, and perform multi-pass rolling processing to obtain a multi-pass rolling process. A metal microchannel substrate with level microgrooves; finally, it is sealed and packaged to obtain a new type of microchannel heat exchanger. The invention solves the difficult problem of processing and forming the multi-level micro channel structure in the array micro channel, and has the advantages of simple process, low cost, high efficiency and the like.

A current-assisted roll forming device for a large area functional microstructure array relates to a roll forming technology, and is designed to solve the problem that large area functional microstructure array is not easy to be formed. A control cabinet of the device is used to control a driving motor to drive a roller press of the precise microstructure array to complete the forming process of the microstructure array of formed parts; an auxiliary forming power supply is used to output pulsed DC, and the current closed loop is realized by the pulsed DC passing though the roller press of theprecise microstructure array and the formed parts. The current-assisted roll forming device for the large area functional microstructure array has the advantages that the forming load can be reduced,and the device is more suitable for continuous production. By using the Joule heating effect and the electroplastic effect formed by assisted current, plastic forming ability of materials can be improved, the minimum forming size can make a breakthrough, and the problem that the large area functional microstructure array is not easy to be formed can be solved.

The present invention relates to a quasi pressure adjusting casting machine comprising a casting kettle, a vacuum baffle, an upper cover, a rapidly locking mechanism, a sealing taper cylinder and a right-angle sealing ring, wherein The upper cover is hinged with an upper cover hinge ear arranged at one side of the casting kettle; the middle of the rapidly locking mechanism is hinged with a locking mechanism hinge ear arranged at the other side of the casting kettle; a groove locked with the upper cover is arranged on the upper end of the rapidly locking mechanism, and a swelling force spring connected with the casting kettle is arranged at the lower end; both ends of the swelling force spring are respectively fixed on the casting kettle and the rapidly locking mechanism; the right-angle sealing ring is arranged in the vacuum baffle, and the vacuum baffle is covered at an opening at the top of the casting kettle; and the sealing taper cylinder is internally sheathed in the right-angle sealing ring. The present invention solves that aluminum alloy thin wall pieces are difficult to form and the aluminum alloy thin wall pieces always appear the problems of microshrinkage, poor tightness and suppress leakage. The present invention has the advantages of that super-thin aluminum alloy casting pieces can be produced; the strength of casting pieces can be improved about 25%; the toughness of the casting pieces can be improved to 80 % to 100%; the production rate is high; and the equipment cost is tens times as low as pressure adjusting casting equipment.