40results about How to "Simplify the forging process" patented technology

The invention discloses a magnesium alloy wheel forging forming method and a die, belonging to magnesium alloy wheel forging forming process and process equipment. The method comprises pre-forging, final-forging and flaring forming; and the used die comprises a pre-forging die, a final-forging die and a flaring forming die. According to the method, in the pre-forging, formation of a hub of a wheel and pre-formation of a wheel arm and a felloe are carried out; in the final-forging, the wheel arm, an outer wheel rim and a cylindrical felloe having an inner wall with a certain taper and a vertical outer wall; and in the flaring forming, the final shape of the felloe of the wheel and a formed inner rim are obtained. The magnesium alloy wheel forging forming method provided by the invention has the advantages that process is simple, the surface and interior quality of the wheel forging piece are good, the mechanical property of the wheel forging piece is excellent, industrial large-scale production is easy to realize, and the like; and the die disclosed by the invention is reliable in work, convenient to regulate and long in service life.

The invention discloses a crystalline grain control method for a GH690 alloy shear cover of an explosion valve and belongs to the technical field of material machining. The method aims to solve the problems that the structure of a forge piece of the GH690 alloy material shear cover of the explosion valve is not even, and crystalline grains abnormally grow up. A heat treatment machining is organically combined with a forging machining, and the machining method that large deformation free forging is implemented at a high temperature (1020 DEG C to 1150 DEG C), small deformation foetal die forging is implemented at a medium temperature (710 DEG C to 850 DEG C), and the inhibition function of carbide second-phase particles on moving of a grain boundary is used for restraining the abnormal growth of the crystalline grains in forging machining of the shear cover in an auxiliary mode is provided. According to the crystalline grain control method for the GH690 alloy shear cover of the explosion valve, the forging piece forming and crystalline grain refinement are conducted synchronously, and the shear cover forge piece is obtained through heating twice; the machining limitation that a forging piece with the simple structure is subjected to high-temperature multiple-time hierarchical forging machining at present is overcome; the forging heating number is reduced; the follow-up heating treatment of the forging piece of the GH690 nickel-based alloy sheer cover is avoided. The structure with even carbides and refined crystalline grains of the GH690 alloy shear cover of the explosion valve forged through the method can be obtained.

The invention relates to the technical field of structural design of engine components, in particular to an engine piston. The engine piston comprises a piston head (1) and a piston skirt (2) which are of split structures; an annular groove (4), a burning chamber (5) and an inner cooling oil channel (6) are machined in the piston head (1), and a single middle-mounted pin base (7) is arranged in the middle of a cavity of the piston head (1); a pin hole (11) perpendicular to the axis of the piston head (1) is machined in one end, far away from the piston head (1), of the middle-mounted pin base (7); the piston skirt (2) is in a barrel shape; the middle-mounted pin base (7) of the piston head (1) penetrates the barrel-shaped inner cavity from one end of the piston skirt (2); and the piston skirt (2) relatively penetrates into the middle-mounted pin base (7) in the inner cavity, a pin base hole (8) coaxial with a pin hole (11) of the middle-mounted pin base (7) is formed in the lateral wall, and pin connection of a three-pin-base structure is achieved by the piston head (1) and the piston skirt (2) through the above structure.

The invention belongs to the technical field of oil sprayer body forging, and discloses a guide-pin-based multidirectional closed forging technology and device for a special-shaped oil sprayer body. The technology includes the steps that a bar with the diameter slightly smaller than the minimum diameter of a forge piece is adopted to be fed, and the blank is heated to the forging temperature through a medium-frequency induction furnace and placed into the closed forging device; the device can perform lateral mold assembling under the effect of guide pins, the whole closed forging device moves downwards after a left female mold and a right female mold are locked through locking blocks, and the blank is molded under the effect of an upper male mold and a lower male mold; in the process that the closed forging device moves upwards after molding, the upper male mold is released, the left female mold and the right female mold are opened, and a workpiece is jacked out through the lower male mold. According to the technology and device, due to multidirectional parting, one-step closed forging molding of the special-shaped oil sprayer body is achieved, the forging technology is simplified, production efficiency and product performance are improved, and mechanization and automation can be easily achieved.

The invention discloses a blocking forging device for a special-shaped fuel injector body. The device comprises an upper mold and a lower mold for blank forming, wherein the lower mold comprises a lower mold sleeve, and a base is arranged inside the lower mold sleeve; the upper end of the base is provided with a sliding mold which is in sliding connection with the inner side face of the lower moldsleeve, and the lower end of the base is provided with movable ejection rods capable of ejecting the sliding mold out; and the sliding mold is composed of a left half mold and a right mold half whichare oppositely arranged. Forming of a cavity is achieved by the oblique sliding of the left half mold and the right half mold, and under the action of self-locking angles, the space positions of thehalf molds are kept stable without additional mechanism maintenance; and a forged piece can be simultaneously demolded from a shape hole of the base and the cavity of the half molds during ejection, so that one-step blocking forging forming of the fuel injector body is achieved, the forging process and the mold structure are simplified, mold parts are reduced, the parting surface is flat and freeof step surfaces, the unbalance loading phenomenon does not exist during forging, and the forming force is lower. The invention further provides a blocking forging process for the special-shaped fuelinjector body, and the blocking forging device is included in the blocking forging process.

The invention discloses a hot forging method of a wetland track plate and a hot forging die thereof. According to the hot forging method of the wetland track plate and the hot forging die thereof, casting forming is changed into forging forming, round steel or square steel is forged and formed, the forged structure is compact, various mechanical properties are remarkably improved, the tensile strength is 1095 Mpa, the yield strength is 1042 Mpa, the hardening and tempering hardness is HRC30-36, the impact toughness value is 128, the cross sectional area is reduced by 31.5%, the power consumption during walking of a main machine is greatly reduced, and the light weight requirement of parts is met; the hot forging belongs to solid forming, waste gas and waste sand generated by casting smelting and casting are avoided, and the defects such as air holes, sand holes, surface cracks, slag inclusion, micro-cracks and the like influencing the mechanical properties are avoided; and the forging process is simplified, the time for each step of the forging is shortened, the problem that large areas and thin walls are difficult to form is solved, the working environment is improved, the production efficiency of each shift is 400-450 pieces, the rejection rate is not more than 0.1%, and the batch production is balanced and stable.

The invention discloses a one-mold two-piece forging mold and method for a drill pipe joint. The mold comprises an upper mold, a lower mold, a first upsetting punch and a second upsetting punch, wherein the lower mold is located right below the upper mold; the first upsetting punch and the second upsetting punch can be correspondingly arranged on the two sides of the lower mold in a horizontal moving manner; the upper mold comprises an upper mold seat, an upper mold sleeve and an upper mold core; the lower mold comprises a lower mold seat, a lower mold sleeve and a lower mold core; molding bosses are correspondingly arranged in middles of the upper mold core and the lower mold core, and molding cavities matched with the shape of the drill pipe joint are arranged on the upper mold core and the lower mold core and located on the two sides of the molding bosses. The one-mold two-piece forging mold can be used for performing one-mold two-piece forging on the appropriate drill pipe joint, so that the forging process of the drill pipe joint is simplified, the machining efficiency is improved, and the machining cost is reduced.

The present invention relates to precise metal forming technology, and is especially precise automobile claw forging process. The technological process includes four steps of upset, lateral hot extrusion in separable female die to form prefabricated blank, final forging and cutting overlap after heating. The simplified forging process had less steps, high product quality, saving in material, low in power consumption, and prolonged die service life.

The invention provides a near-net-shape casting production method for automotive aluminum alloy parts. A semicontinuous casting crystallizer which has the same shape and dimension as a forged product is adopted, a near-net-shape cast ingot is produced by the semicontinuous casting method, the ratio of the cross-sectional area of the cast ingot to the cross-sectional area of the forged product is 1.35:1 to 1.05:1, the cast ingot is cut into sheets, which are then directly formed by one or two times of die forging, and thereby aluminum alloy forged products are obtained. The shape of the ingot produced by the method is near to the shape of the finished forged product, the ingot-preforging step is reduced, the comprehensive utilization rate of alloy materials is increased, meanwhile, coarse recrystallization cannot occur in the process of forging, and the overall properties of the product are enhanced.

The invention belongs to the technical field of claw preparation, aims to overcome the defect that the claw pole shaping process in the prior art reduces the height of claw teeth and deforms work pieces, and provides a lateral shaping process for hybrid excitation claw poles. The outer side of a lower die holder of a shaping mold is equipped with lateral sliders matched with lower concave dies on the lower die holder, a claw pole is fixed to the mold, force is applied to the lateral sliders along the radial direction of the lower die holder to make the lateral sliders move to the lower die holder and match the lower concave dies, and force along the radial direction of the lower die holder continues to be applied to the lateral sliders to shape claw teeth and wings of the claw pole. The beneficial effects are as follows: the wings of a hybrid excitation claw pole are shaped through lateral force, and the wings can be shaped under the action of a small force; materials flow laterally, the flow length is small, and the adverse impact of friction to shaping during claw pole shaping under forward extrusion can be reduced; moreover, there is no need to open a material accommodating slot during hot forging, the forging process is simplified, and the product performance is improved.

The invention provides a concave anvil used for forging and a forging device and belongs to the field of machinery. The concave anvil used for forging is provided with a concave surface, and a reference plane opposite to the concave surface is defined on the concave anvil. The distance between the concave surface and the reference plane is gradually and synchronously decreased from the center to the two ends of the concave surface. The difference value between the maximum distance and the minimum distance between the concave surface and the reference plane is 3.5 mm-6.5 mm. The forging device comprises the concave anvil used for forging. According to the concave anvil used for forging, the defect problem of a forging is solved, so that the fiber structure of the forging and the shape of the forging are kept consistent, the metallurgical quality of the forging is improved, and meanwhile, the forging cost is also reduced.

The invention provides a metal acetabular outer cup closed-type forging die. The problems that procedures are complicated, the manufacturing cycle is long, the material utilization rate is low, filling defects are prone to being generated, adjustment of forging equipment is difficult and the production cost is high due to the fact that existing metal acetabular outer cups are manufactured by an open-type die forging process can be solved. The metal acetabular outer cup closed-type forging die includes a punch and a female die. The female die is provided with an impression penetrating in an up-down mode. The impression includes a guide cylinder, a cavity and an extrusion port which coaxially communicate with one another sequentially from top to bottom, and the shape of the cavity is matchedwith the outer shape of the acetabular outer cups. A guide part and a forming part which are coaxially arranged from top to bottom are arranged on the bottom surface of the punch, the guide part is in clearance fit with the guide cylinder, and the shape of the forming part is matched with the inner shape of the acetabular outer cups. Meanwhile, the invention further provides a metal acetabular outer cup closed-type forging method.

The invention relates to a large-cylinder-diameter integrally-forged steel piston. A piston skirt part and a piston head part are both forged parts, the top of the piston skirt part and the piston head part are fixed to form a piston body, a closed cooling oil cavity or two communicated double cooling oil cavities is/are formed in the piston body, and a skirt part annular part is fixed to the lower end of the piston skirt part; and the cross section of a corresponding oil annular groove lower annular bank on the outer wall of the top of the piston skirt part is in an oval shape with the long axis parallel to the direction of a piston pin hole, and the annular bank and the skirt part annular part jointly participate in guiding of a piston body. Blanks of the piston head part and the pistonskirt part are separately forged and machined, so that the forging process is simplified, and the requirements and investment on equipment, cutters and the like are reduced. The piston skirt part annular part is independently machined, the forging depth of the piston body skirt part is reduced, the piston production difficulty is reduced, and the piston production efficiency is improved. The piston skirt part annular part and the oil annular groove lower annular bank jointly participate in piston guiding, stable operation of an engine is facilitated, the eccentric wear phenomenon of the pistonis reduced, and use safety and reliability of the piston are improved.

The invention discloses a wheel edge planet wheel shaft structure of a loader drive axle. The wheel edge planet wheel shaft structure comprises a wheel edge end cover and a planet wheel shaft, a planet wheel is installed on the planet wheel shaft through a roller bearing assembly, and the roller bearing assembly is limited through a check ring so that it can be guaranteed that the roller bearing assembly cannot get loose; the wheel edge end cover and the planet wheel shaft are in a split type, and the planet wheel shaft is in an independent flange type; a plurality of screw holes which are uniformly distributed are formed in the wheel edge end cover, and are fixed on the wheel edge end cover through screws; and an independent flange type planet wheel shaft is formed by forging a 20CrMnTi material and then carrying out carburizing and quenching treatment, so that the rigidity is improved. The problems that in the prior art, the manufacturing cost is high due to the fact that four standcolumns of the wheel edge end cover need to be forged and formed many times, and the failure rate is high due to stress concentration easily caused by roots of the four stand columns of the wheel edgeend cover are solved.

The invention discloses an annular forge-piece cast ingot prefabricating combined mould for separating the cast ingot from the bottom molding body and preventing the cast ingot body from producing cracks or rips. Its technical key points: setting combined inner ring body in the die space of the bottom molding body, where the inner ring body is composed of two, three or four small ring or wedge blocks, and there is a concave-arc or concave-isoceles triangular annular surface on the inner ring body.

A heating/heat-retaining device, particularly to a heating/heat-retaining device used in the forging process, and more particularly to an opening-and-closing type heater and a wind generator shaft forging process using the same. The opening-and-closing type heater comprises a base, a tube body mounted on the base and a tube body opening-and-closing mechanism; the tube body comprises a fixed tube body and a movable tube body, the fixed tube body and the movable tube body are arc-shaped shells, and form a hollow shape when the openings thereof match with each other; the tube body opening-and-closing mechanism is connected to the movable tube body for realizing the opening-and-closing of the movable tube body and the fixed tube body. The invention solves heat retaining and heating problems during the forging process of the main shaft forgings and avoids internal defects due to rapid temperature drop of the main shaft forgings.

The invention discloses a forging molding technological method for a multi-lug part. The forging and molding technological method for the multi-lug part is completed according to the following steps that firstly, blanking and heating are conducted, wherein heating is conducted after a round bar blank is blanked; secondly, flattening is conducted, wherein one end of the round bar blank is arranged on a pressing die, and after the pressing die is closed once, one end of the round bar blank is flattened; thirdly, upsetting pressing is conducted, wherein the flattened end of the round bar blank is vertically inserted into a blank forming die cavity of the pressing die, upsetting pressing is conducted on the other end of the round bar blank, and therefore a blank with the outline matched with a cavity of a pre-forging die is obtained; fourthly, forging molding is conducted, the blank obtained after blank forming is conducted is put into the pre-forging die to be pre-forged, and then the pre-forged blank is input into a final-forging die to be forged into a finished blank. According to the forging molding technological method for the multi-lug part, the process of the forging technology of the multi-lug part becomes easy, the production efficiency is improved, an air hammer and a roller forging machine are not used any more, blank waste is reduced, and comprehensive benefits are improved.