109results about How to "Shorten forming time" patented technology

The invention discloses a fast manufacturing method of three-beam laser compound scanning. The method comprises the following steps of: firstly utilizing long-wavelength laser (CO2 laser) for preheating the metal powder, then utilizing short-wavelength laser (YAG or optical fiber laser) for fusing the metal powder and finally utilizing long-wavelength laser (CO2 laser) to carry out heat treatment to the frozen metal. The fast manufacturing method uses the three beams of laser to carry out compound scanning, namely uses long-wavelength laser to preheat, short-wavelength laser to fuse and then long-wavelength laser to carry out heat treatment, can realize the compound process of preheating, fusion and heat treatment of the metal powder. The three beams of laser compound scanning mode can reduce internal stress of the metal part, avoid warping and cracking, improve organization and improve performance.

The invention belongs to the fields of fruit tree cultivation and fruit tree ecology, and discloses a shaping method for a downward-arrowhead-shaped tree shape of a pear tree. The tree shape has a tree height of 2.4-2.5 m, and a trunk height of 0.6-0.7 m, and only two main branches and one centre trunk of a first layer are reserved, therefore, the tree shape is called as the downward-arrowhead-shaped tree shape. The downward-arrowhead-shaped tree shape is small in top and large in bottom, the influence of upper branches on lower branches is less, and ventilation and light transmission conditions are good. The downward-arrowhead-shaped tree shape of a pear tree is an innovation based on the '3-plus-1' tree shape disclosed previously, which is simple in structure, convenient in culture, easy to grasp by fruit growers, convenient in field management, and easy to spread and popularize; and the tree shape is a novel high-quality and labour-saving cultivation tree shape of a pear tree.

The invention discloses selective laser melting forming equipment which comprises a chief equipment platform, lifting forming platforms, a rotatable powder supplying and paving device and laser systems. The chief equipment platform is provided with through holes which downwards extend along the upper surface of the chief equipment platform, the forming platforms are embedded in the through holes and can move up and down in the through holes, and the laser systems are located above the lifting forming platforms. The invention further discloses a forming method which specifically includes the following steps that 1, base materials are placed on the forming platforms, and the upper surfaces of the base materials are made to be aligned with the upper surface of the chief equipment platform; 2, powder is added into a powder supplying bin, a hollow rotating shaft rotates to pave the surface of each base material with a layer of powder; 3, the laser systems are started to scan the powder layers in the areas of the forming platforms; and 4, after scanning is completed, the forming platforms fall by the distance of the thickness of one layer of powder, and the second step of powder paving and the third step of scanning are repeated till forming is completed. The selective laser melting forming equipment and the forming method thereof are high in forming efficiency.

The invention discloses a cold-hot compound die molding method for an aluminum alloy sheet metal component, and relates to a molding method for a sheet metal component. The invention aims to solve the technical problems that the conventional hot-state molding method for the aluminum alloy sheet metal component is low in molding efficiency and can easily cause local crinkles and fractures, and provides the cold-hot compound die molding method for the aluminum alloy sheet metal component. The cold-hot compound die molding method comprises the following steps of: 1, heating a lower die to a temperature of between 200 and 900 DEG C; 2, placing an aluminum alloy plate blank on the lower die and heating the aluminum alloy plate blank to the deformation temperature of the aluminum alloy plate blank; 3, closing the die to press the aluminum alloy plate blank into the aluminum alloy sheet metal component; 4, separating the aluminum alloy sheet metal component, an upper die and a blank holder from the lower die; and 5, cooling the upper die and the blank holder, keeping the temperature for a certain period of time, and taking the aluminum alloy sheet metal component down to finish the cold-hot compound die molding of the aluminum alloy sheet metal component. According to the method, a cold-hot compound die in which the upper die is in a cold state and the lower die is in a hot state is adopted to mold the aluminum alloy sheet metal component. The cold-hot compound die molding method is suitable for making the aluminum alloy sheet metal component.

The invention discloses a molten coating forming device and a method of metal material gradient components. The device comprises at least two metal smelting units, and further comprises an air pressure driving device, a molten coating head, a laser surface auxiliary remelting device, a powder feeder, a three-dimensional forming platform and an atmosphere protecting device; the air pressure driving device is connected with the metal smelting units through pipelines; the molten coating head is connected to the lower ends of the metal smelting units; the three-dimensional forming platform is arranged below the molten coating head; the laser surface auxiliary remelting device is arranged on one side of the three-dimensional forming platform; the powder feeder is arranged on the other side of the three-dimensional forming platform; and the metal smelting units, the molten coating head, the laser surface auxiliary remelting device, the powder feeder and the three-dimensional forming platform are all arranged in the atmosphere protecting device. The device can realize the added material manufacturing of part and gradient components with metal materials with high efficiency, high quality and low cost.

The invention discloses a method utilizing middle and high-frequency induction to heat radial forging to form screws. The method includes clamping workpieces, heating partial surface of forming screw section end portion area of the workpieces, conveying workpieces heat section in a radial forging hammer direction, performing middle and high-frequency induction heating continuously, finishing thread shape forming of 1 / 2-2 / 3 portion of the forming screw section of workpieces via the hammer, clamping the other end of the workpieces via a second mechanical arm, loosening and retreating the first mechanical arm, performing middle and high-frequency induction heating continuously, finishing thread shape forming of unformed portion of the forming screw section of workpieces via the hammer, rapidly conveying the workpieces via the second mechanical arm in a clamping shaft direction, and discharging materials. The forming screw parts are formed via the middle and high-frequency induction heating and radial forging method, material using rate is increased, production circle is shortened, forming load is small, material flowing performance is good, forming accuracy is high, surface quality is good, screws with large material deformation resistance, high in hardness and large in diameter.

The invention discloses a superplastic forming die for aluminum alloy coating parts for railway vehicles and a forming method for the superplastic forming die, and relates to a superplastic forming die and a forming method thereof. The invention solves the problems of low production efficiency and high production cost in the aluminum alloy coating parts for the railway vehicles in the prior art. An upper plate of the superplastic forming die is arranged over a female die; a male die is fixedly arranged at the lower end of the upper plate; and an aluminum alloy plate is arranged at the upper end of the female die between the male die and the female die. The superplastic forming method comprises the following steps: 1, mounting the superplastic forming die; 2, spraying a high temperature lubricant; 3, preheating the superplastic forming die; 4, preheating the aluminum alloy plate; 5, bending the aluminum alloy plate in an initial stage; 6, after the aluminum alloy plate is bent in the initial stage, forming a sealed space between the bent aluminum alloy plate and the male die; and 7, finally shaping the aluminum alloy plate. The invention is suitable for manufacturing the aluminum alloy coating parts for the railway vehicles.

The invention relates to a hollow structure forming method. The hollow structure forming method comprises the steps that a welding stop agent is coated between two or more core boards, the core boardsare laminated, heating is performed to reach diffusing connection temperature, and diffusing connection is completed through pressurizing; laminated face boards are placed on two sides of a core board assembly formed after diffusing connection, the peripheries of laminated blank assemblies are soldered and sealed, and an inner layer air channel and an outer layer air channel are reserved; the laminated blank assemblies are put in a super-plastic forming mold, heating is performed to reach the predetermined temperature lower than the diffusing connection temperature, and air introduction for pressurizing is performed through the outer layer air channel, so that the outer-layer face boards are stressed to outward extend and deform and complete super-plastic forming; after super-plastic forming of the face boards, air is discharged for pressure relief through the outer layer air channel, and then air introduction for pressurizing is performed through the outer layer air channel, so thatthe core boards are stressed to outward extend and deform and complete super-plastic forming; after super-plastic forming of the core boards, heating is performed to reach the diffusing connection temperature, heat preservation and pressure maintaining are performed, so that diffusing connection between the outer-layer face boards and the core boards is achieved.

The invention relates to the technical field of superplastic forming, in particular to an electron beam welding and superplastic forming process for wing and rudder parts. The electron beam welding and superplastic forming process for the wing and rudder parts can achieve electron beam welding and superplastic compound integrated formation of hollow intensive core grid wind and rudder parts, corelayers are subjected to electron beam keyhole-mode welding instead of diffusion bonding, and accordingly the quality problem of diffusion bonding of the core layers is solved; the number of gas circuits is decreased, and the risk that the gas circuits are blocked or leak air is reduced; the complicated work of solder mask coating is avoided, the core grid dimension precision is higher, and the part forming quality is improved; and compared with superplastic forming and diffusion bonding, the forming time is shortened, the forming efficiency is improved, and the forming qualified rate is increased.

A fast forming method for the manufacture of a metal laminated entity comprises the following steps of establishing a CAD geometrical model for metal parts, finishing the inner hole cutting of a metal sheet layer in a first work station through a laser cutting system, rejecting the wastes in the inner hole, welding the metal sheet with a metal sheet thereunder in a second work station through a welder, finishing the cutting of peripheral outline of the metal sheet layer in the second work station through the laser cutting system, and repeating the process between the steps 2 and 6 by moving a lifting working platform downwards (negative direction of Z) with a pace, until the metal sheets in the work piece are completely bonded or welded so as to obtain a formed work piece of metal laminated entity. Compared with the prior art, the invention thoroughly solves the forming problem of the parts with spatially totally-enclosed holes so as to greatly save time, can weld the metal sheet in each layer by smoothly using an electrical welding method, and remarkably improves the mechanical performance of the parts.

The invention discloses a metal material melt coating forming device and a metal material melt coating forming method. The device comprises a metal smelting unit, and further comprises a pneumatic driving device, a melt coating head, a laser surface auxiliary remelting device, a three-dimensional forming platform and an atmosphere protection device, wherein the pneumatic driving device is connected with the metal smelting unit through a pipeline; the melt coating head is connected to the lower end of the metal smelting unit; the three-dimensional forming platform is arranged below the melt coating head; the laser surface auxiliary remelting device is arranged on one side of the three-dimensional forming platform; and the metal smelting unit, the melt coating head, the laser surface auxiliary remelting device and the three-dimensional forming platform are arranged on the atmosphere protection device. The melt coating forming device can be used for additive manufacturing of an efficient, high-quality and low-cost metal material part.

Provided is a rolled copper foil or electrolytic copper foil for an electronic circuit to be used for forming a circuit by etching, wherein the rolled copper foil or the electrolytic copper foil comprises a nickel alloy layer with lower etching rate than copper, which is formed on an etching side of the copper foil, and the nickel alloy layer contains zinc. This invention aims to prevent sagging caused by the etching, to form a uniform circuit having the intended circuit width, and to shorten the time of forming a circuit by etching as much as possible, when forming a circuit by etching a copper foil of the copper-clad laminate; and also aims to make the thickness of the nickel alloy layer as thin as possible, to inhibit oxidation when exposed to heat, to prevent tarnish (discoloration) known as “YAKE”, to improve the etching properties in pattern etching, and to prevent the occurrence of short circuits and defects in the circuit width.

The invention relates to the field of spinning design, in particular to a design method of tubular part spin forming spinning roller tracks. The design method includes the steps that 1, a mandrel anda blank serve as research objects, and the starting point positions of the spinning roller tracks are determined according to the size of the mandrel, the size of the blank and the assembly relationship between the mandrel and the blank; 2, an involute track is selected as a curve track, and curve parameters are determined; 3, the spinning roller tracks and lengths in all passes are calculated, the gap compensation amount is calculated, and the spinning roller tracks are optimized; 4, the optimized spinning roller tracks are dispersed into a point coordinate form, and codes of a numerical control spinning machine tool are input; and 5, the blank is trail-manufactured on the numerical control spinning machine tool, if trail-manufacturing succeeds, mass production can be carried out, if trail-manufacturing fails, the step 2 is executed again, and curve parameters are determined again until trail-manufacturing succeeds. The design method has the beneficial effects that the spinning rollertracks are established, the gap amount can be compensated, the forming time is shortened, and the production efficiency of products is improved.

The invention belongs to the relevant technical field of additive manufacturing, and particularly relates to a multi-arc synergistic additive manufacturing method applicable to a high-performance metal component. The method comprises the steps that multiple mutually-independent arc guns capable of executing X-Y-Z three-axis translation and angle rotation are arranged for the metal component to be formed, and therefore the relative positions and working states of the arc guns are freely changed; based on a three-dimensional model and a forming path of the metal component, the same or different metal wires are installed on wire feeding systems of the arc guns, and the multi-arc system additive manufacturing process for the metal component is executed by adopting some or combination of multiple modes of a common molten pool, a non-common-molten pool and a partial molten pool according to working condition requirements. By means of the multi-arc synergistic additive manufacturing method, the temperature field of deposited metal can be well adjusted, the metal structure is remarkably improved, the whole arc additive manufacturing process with the higher efficiency and higher quality is achieved, and the multi-arc synergistic additive manufacturing method is particularly applicable to special application occasions of high-performance large complex metal components.

The invention discloses a forging forming method of a triangular aluminum alloy control arm and aims at solving the problems in the prior art of low quality of a product, low material utilization ratio and low production efficiency. The forging forming method comprises the following steps: 1, blanking; 2, heating a blank: heating the blank in the first step in an electric induction heating furnace at the heating temperature of 420-480 DEG C, keeping the temperature for 5-8min to enable the blank to be uniformly heated, and finishing dynamic recrystallization after finishing forging to obtain uniform microstructures; 3, roll forgingforming: 1) calculating a roll forging pass n; 2) roll forging forming: comprising the following steps: from (1) first-pass roll forgingforming to (4) fourth-pass roll forging forming; 4, mis-shifted forming; 5, flattening forming; 6, pre-forging forming; 7, finish forging forming: carrying out finish forging forming on the basis of pre-forging forming, designing a die according to a hot forging drawing during finish forging forming, putting a pre-forging into a mold cavity of the finish forging die, and then obtaining a part in finish forging forming under the action of a press; and 8, shaping the forging.

The invention discloses a radial forging and gradual-increment forming method for a large-tooth-height thread element. According to the method, a hammerhead is gradually increased by a radial compression amount, the hammerhead is provided with a thread-shaped section, the thread shape comprises a gradual-increment-variable thread-shaped section and a gradual-increment-invariable thread-shaped section, a plurality of the hammerheads with the gradual-increment-variable thread-shaped sections are used for synchronously forging, and a workpiece is rotated and axially fed simultaneously, thus reducing a forming force, reducing forging defects, and improving surface accuracy and strength; isovolumetric forging is carried out to realize near-net forming, thus increasing material utilization rate, and shortening production period; forming manufacturing for thread components such as lead screws and screw rods with high performances, large diameters and high tooth heights can be realized.

The invention belongs to the field of amorphous alloy thermoplastic forming and discloses a plastic forming and toughening method and a device based on ultrasonic vibration. The method comprises the steps: (a) dividing a part with toughness to be enhanced on an amorphous ally part to be formed to be used for generating a nanocrystalline toughening phase; (b) designing a toughening device for forming, wherein the toughening device comprises an insert block connected with an ultrasonic vibration amplitude change pole and a heating rod, the insert block corresponds to the part with the toughnessto be enhanced and is used for exerting ultrasonic vibration on the part with the toughness to be enhanced, and the heating rod is used for heating raw material blank to be processed to a forming temperature; (c) putting the raw material blank in the device, heating by the heating rod, mould closing the device to form a required amorphous alloy part, starting ultrasonic vibration in a mould closing process and stopping in mould opening. Meanwhile, the invention further discloses the utilized device. By means of the plastic forming and toughening method disclosed by the invention, toughening and plastic forming can be performed at the same time, so that forming and toughening integration is achieved, production work procedures are simplified, processing time is shortened, and dimensional accuracy is improved.

The invention relates to an amorphous metal glass forming system and process with cold-hot circulation. Electric heating elements are arranged in an upper die and a lower die; the electric heating elements are connected with a temperature control device through leads; cooling through holes are formed in the upper die and the lower die; copper pipes are arranged in the cooling through holes; the copper pipes are taken as common channels for cooling water and high-pressure gas; an external cooling water device and a high-pressure gas device are communicated with each other; the temperature control device, a contact type temperature measuring device, a non-contact type temperature measuring device, a high-pressure gas device, a cooling water device, a displacement sensor and a pressure sensor which are arranged on forming equipment are connected with a main control system through communication leads; the forming equipment is connected with a forming equipment control system through a lead. In a forming process, the dies can be protected, the surfaces of the dies are prevented from being damaged, and the phenomenon of crystallization of an amorphous alloy is avoided.

The invention discloses an auxiliary support structure and an application method thereof for laser selective forming of a suspended plane and belongs to the technical field of additive manufacturing.The auxiliary support structure comprises at least one back-up block. A first supporting plane, a second supporting plane and a suspending plane are arranged on the back-up block. The first supportingplane is used for connecting a suspending plane of a product and supporting the suspending plane. The second supporting plane is used for connecting an inner surface of the product. The plane of thesuspending plane is crossing with the first supporting plane and the second supporting plane. Due to the suspending plane, the volume of the support structure can reduce more than 40%, the forming time of the auxiliary support structure is reduced, the volume of the row material is reduced. The cost of production is saved. Meanwhile, the probability of a partial disintegrate and collapse of the auxiliary support structure for laser selective forming of suspended surface in forming process are significantly reduced. The probability of wrapping and deforming is also significantly reduced. The qualified rate is improved.

The invention relates to a supporting structure for selective laser melting forming and a generating method of the supporting structure. The supporting structure is simple in structure, and the loss of raw materials is reduced in the production process, the printing efficiency is improved, and the post-processing difficulty is reduced. The supporting structure comprises a plurality of supporting units which are arranged on the same plane in an array mode; each supporting unit comprises a plurality of supporting single bodies, the supporting single bodies are of hollow tube structures which arearranged in the horizontal direction, the length direction of the hollow tubes is taken an X direction, the plurality of supporting single bodies are arranged in an array mode in a Y direction and aZ direction, every adjacent supporting units are mutually connected through walls of hollow tubes to form the supporting units; and the hollow tubes form lateral powder discharging channels of the supporting units. According to the generating method, a cross section structure is formed by utilizing three-dimensional graphic software, array and arrangement are carried out for the area required to be supported according to requirements, the use requirements are met, and the supporting structure together with the part data can be output and completed to be formed synchronously; and in the settingand forming process, the the supporting units are directly reinforced for guaranteeing of the supporting effect.

Disclosed is a method for forming a lead screw through radial forging. The method comprises the steps that a workpiece is clamped firstly, the workpiece is fed axially, the workpiece rotates and is fed, hammer beating forging is performed to enable a threaded shape to be formed on the two third part to the third fourth part of a formed lead screw section on the workpiece; a second mechanical arm is used for clamping the other end of the workpiece, a first mechanical arm releases and retreats, the workpiece rotates continuously and is fed, hammer beating and lifting are performed continuously to enable a threaded shape to be formed on the unformed part of the lead screw section on the workpeice, the workpiece is clamped by the second mechanical arm to be fed axially quickly, and discharging is performed. By means of the method for forming the lead screw through radial forging, the material utilization rate is improved, the production period is shortened, the strength of the surface of the lead screw is enhanced, the forming precision is high, the surface quality is good and high-performance and large-diameter lead screws can be machined.

The invention discloses a heat transfer plate forming device and forming method. The device comprises an electromagnetic driver, a mold, a power supply system and an edge pressing unit. The electromagnetic driver is located above a workpiece to be formed. The edge pressing unit is located on the edge of the workpiece to be formed. The mold is located below the workpiece to be formed. The workpieceto be formed is in series connection with the electromagnetic driver to form an electrical series loop. The power supply system provides pulse current for the series loop. The shape of the side, close to the workpiece to be formed, of the electromagnetic driver is matched with the outline shape of the area, to be formed, of the workpiece to be formed or the outline shape of an intermediate workpiece formed in the former step. The power supply system provides the pulse current for the series loop. Under the action of the pulse current, a magnetic field is generated around the workpiece to be formed and the electromagnetic driver, and electromagnetic force is generated under the combined action of the magnetic field and self electric current of the workpiece to be formed so that the workpiece to be formed is enabled to deform for multiple times to tend to be in the shape of the mold. A heat transfer plate stresses even force, and the forming accuracy of the heat transfer plate is improved.

A resistance control method for a nonvolatile variable resistive element is provided. The method realizes synchronous progress of writing, wiping and forming processing of a plurality of memory cells. The device includes a memory cell array in which the unit memory cells having nonvolatile variable resistive elements and transistors are arranged in a matrix. The memory cells that are targets of a memory operation are selected by first selection lines (word lines), second selection lines (bit lines) and third selection lines (source lines). The method includes steps of selecting one or more first selection lines, selecting a plurality of second selection lines, and applying a compensated voltage in which a change in potential of the third selection lines caused by current flowing into the third selection lines through the second selection lines is compensated in a voltage that is necessary for the memory operation, such that the voltage necessary for the memory operation is applied to all of the selected memory cells.

The invention discloses a multi-directional numerical control linkage precision forming process of a transmission planetary carrier. The process is characterized in that a heated metal bar is formed through numerical control linkage of an upper punch, a front punch, a rear punch, a left punch and a right punch in five directions, and a precise forging of the transmission planetary carrier with thecomplicated shape is prepared in a single station and through one-time heating and multi-directional forming; and the front punch, the rear punch, the left punch and the right punch in a die are arranged in four side square holes in a female die, and are not separated all the time in the forming process. The forging forming planet carrier forge piece is small in machining allowance, the production efficiency is greatly improved, the cost can be reduced to a great extent, and a certain foundation can be laid for mass production of the current part.

The present invention relates to an apparatus and method for manufacturing a battery terminal plate, and more particularly relates to an apparatus and method for manufacturing a battery terminal plate, in which a terminal plate for a secondary battery, such as a middle or large sized Lithium ion battery, which is applied to electric vehicles, hybrid vehicles, plug-in hybrid vehicles, solar cells, electric tools and so on, is processed by not pressing but forging, a shifting and supplying apparatus for shifting a material to be processed in each forming and processing step may be moved by the shortest distance through a shift-return method (one step shift-return), the material is previously processed by punching so as not to satisfy a standard of a design, and the firstly processed material is secondly processed to satisfy the standard.

The invention discloses a 3D (three-dimensional) printing method and printing system based on holographic projection. The 3D printing method comprises the following steps of pre-manufacturing a holographic plate with a holographic map of a to-be-printed object; enabling coherent light emitted by a coherent light source to pass through the holographic plate along a preset holographic projection imaging light path, and forming a three-dimensional stereo actual image corresponding to the to-be-printed object in a preset projection space; polymerizing and curing a photosensitive material in the projection space at one time by the three-dimensional stereo actual image, and forming a three-dimensional object of which the actual size and shape are uniform with the size and shape of the three-dimensional stereo actual image. The 3D printing method has the advantage that by arranging the photosensitive material matched with the light intensity distribution of the three-dimensional stereo actualimage in the projection space, the one-time omni-directional stereo polymerizing is realized, so that the forming process of the samples with complicated structure can be completed at one time, the gradual continuous accumulating and forming process of points, lines, surfaces and body is not needed, the forming time is greatly shortened, and the working efficiency and forming precision are improved.