108results 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 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 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.

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 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 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 high-precision automatic alignment type multi-position workpiece pinching device, which belongs to the field of pinching devices. The high-precision automatic alignment type multi-position workpiece pinching device comprises a chuck mechanism, a telescoping mechanism, an elevating mechanism, an anti-reverse guide mechanism and a base mechanism, wherein the elevating mechanism and the anti-reverse guide mechanism are arranged on both sides of a guide post in the center, the telescoping mechanism is arranged on the upper end surface of a cross beam of an upper T-shaped frame, a telescoping connecting rod of the chuck mechanism is connected with an inner guide post rod of the telescoping mechanism, and the telescoping mechanism is used for controlling the chuck mechanism to stretch, open and close. According to the high-precision automatic alignment type multi-position workpiece pinching device, the alignment requirement of a workpiece can be automatically realized, and the multifunctional requirements of transposition, clamping, retraction and sending, positioning, high-precision mold closing and the like in multiple positions can be satisfied. When the high-precision automatic alignment type multi-position workpiece pinching device is moved, the ranges of elevation, opening and closing, positioning and stretching are large, and the pinching device can be conveniently adjusted, operated and controlled.

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.