134 results about "Extrusion moulding" patented technology

The invention relates to the technical field of magnesium alloys, in particular to a low-density, high-modulus and ultrahigh-strength magnesium-based composite material and a preparation method thereof.The preparation method comprises the steps that SiC reinforcement particles are pretreated; the raw materials are proportioned according to the mass percent of the components of the magnesium alloy; melting pure magnesium, sequentially adding alloy elements, uniformly stirring, cooling to a semi-solid temperature interval, adding the pretreated SiC reinforcement particles, and casting in a preheating mold to solidify, so as to obtain a magnesium-based composite material cast ingot; the cast ingot is sequentially subjected to solution treatment and extrusion forming; carrying out secondary solution treatment on the magnesium-based composite material bar subjected to extrusion forming; and performing rotary swaging deformation and intermediate annealing treatment on the magnesium-based composite material bar subjected to secondary solution treatment to obtain the ultrahigh-strength magnesium-based composite material. Therefore, the problems that in the prior art, magnesium alloy is insufficient in strength and modulus, a magnesium-based composite material easily generates casting defects and is difficult to deform at room temperature, and the performance of the material is weakened due to grain growth during high-temperature deformation are solved.

The application discloses a forming and machining die for a motor shell and belongs to the technical field of die machining. The forming and machining die for the motor shell comprises a main body, two shaking mechanisms are arranged in the main body, the shaking mechanism comprises a track rod, a first linear area and a second linear area for the motor shell to enter and exit the die are arranged in the track rod, a floating area for vibrating the motor shell is arranged between the first linear area and the second linear area, a demolding mechanism is correspondingly arranged in the track rod, the demolding mechanism comprises two connecting rods, telescopic built-in rods are sleeved on the two connecting rods, and a plurality of supporting columns are arranged in the two built-in rods and slide along the track rod. The demolding mechanism and the shaking mechanism can gradually extrude and form the motor shell when the machining die works, the investment of external equipment is reduced, the motor shell can be quickly demolded in the alternating process, and the machining efficiency is improved.

The utility model discloses an extrusion mold core for a cable, which comprises a main body 1, two ends of the main body 1 are respectively a connecting end 1.1 and an extrusion end 1.2, the outer side of the main body 1 is in the shape of a cone of which the diameter is reduced from the connecting end 1.1 to the extrusion end 1.2, the main body 1 is axially provided with a conical hole 1.3 of which the diameter is reduced from the connecting end 1.1 to the extrusion end 1.2, and the outer side of the main body 1 is in the shape of a cone of which the diameter is reduced from the connecting end 1.1 to the extrusion end 1.2. A conical hole 1.3 is formed in the middle of the body 1, an extrusion hole 1.4 is formed in the tail end of the conical hole 1.3, a copper pipe 2 is fixedly connected into the extrusion hole 1.4, the length of the copper pipe 2 is smaller than that of the extrusion hole 1.4, and the end, away from the conical hole 1.3, of the copper pipe 2 is located in the extrusion hole 1.4. The utility model provides the extrusion molding die core for the cable, which can avoid high-temperature heat transfer caused by contact between a conductor and an extrusion hole when the conductor penetrates out of the extrusion hole, avoid oxidation of the extrusion hole and ensure the extrusion molding quality.

The application discloses a high specific strength high-elongation 6-series aluminum alloy anti-collision beam, which comprises a base, the upper side walls of the base are symmetrically fixedly connected with vertical plates, the opposite sides of the two vertical plates are fixedly connected with support plates, the upper side walls of the two support plates are fixedly connected with a smelting furnace, a stirring mechanism is arranged on the smelting furnace, a feeding port is formed in the upper side wall of the smelting furnace, and arc-shaped blocks are arranged on the inner bottom wall of the smelting furnace. The anti-collision beam combines the advantages of 6082 alloy and 7003 alloy, has good extrusion forming performance, the strength is greater than 340 MPa, the elongation is greater than or equal to 15%, and the elongation is improved by more than 10% compared with the 6082 alloy. The rare earth rhenium is added to refine the grains and improve the alloy strength, and the 6-series profile is subjected to double-stage aging strengthening, so that the elongation of the alloy is further improved.

The application discloses an on-line cutting device and method for continuously extruding and forming metal pipes, which comprises a follow-up system, a cutting system and a supporting structure. The cutting system can make the pipe cutting cutter produce transverse movement to cut the pipe. The follow-up system can make the movement speed of the cutting system consistent with the movement speed of the extruded pipe. The on-line cutting device and cutting method can adapt to the needs of the continuous extrusion and formation of the pipe, and can realize industrialization and large-scale production.

This invention discloses an isothermal extrusion method for aluminum alloys based on data feedback optimization control, belonging to the field of metal material processing technology. The method includes: Step 1, extruding an aluminum alloy rod at a preset initial temperature and a preset initial extrusion speed; Step 2, acquiring the extrusion exit temperature of the aluminum alloy rod in real time, and determining in real time whether the extrusion exit temperature is not less than a preset maximum temperature. If so, adjusting the extrusion speed in real time using a preset control equation until the current aluminum alloy rod extrusion is completed; Step 3, acquiring the function of the extrusion speed changing with time during the current aluminum alloy rod extrusion process, and correcting the function to obtain the corrected speed for extruding the next aluminum alloy rod; Step 4, if further extrusion is needed, extruding the next aluminum alloy rod at a preset initial temperature and corrected speed, and returning to Step 2 for repeated execution. This invention can significantly improve the efficiency and quality of aluminum alloy extrusion forming.

The application provides a three-step forming cold extrusion process method and a forming die for a firing pin, which comprises the following steps: pre-cutting, pre-cutting two adjacent part material sheets apart by using a pre-cutting punch and a pre-cutting die; pre-forming, pressing the required material of the part into a material storage hole by using a pre-forming punch and a pre-forming die, and extruding the excess material into the extrusion area of the next working step; rough forming, rough forming of the part is completed by using a rough forming punch and a rough forming die; trimming the excess material, the material extruded in the pre-forming and rough forming steps is cut off by using a trimming punch and a trimming die, so that the edge of the material is ensured to be free of cracks; fine forming, fine forming of the steel strip is performed by using a fine forming punch and a fine forming die. The three-step forming cold extrusion process method breaks through the bottleneck in the cold extrusion forming process of small high-strength, high-precision and special-shaped metal parts, significantly improves the forming efficiency and improves the forming quality. The forming quality of the firing pin obtained by the forming die is high.

The invention discloses an internal expanding and external rotating combined extrusion forming method and device for multiple inner ring ribs or bosses of a cylindrical part. The device comprises an internal expanding mechanism, an axial loading mechanism, a radial loading mechanism and a rotating loading mechanism. The internal expanding mechanism comprises a sectioning module consisting of first sectioning molds and second sectioning molds which are alternately arranged; the first split die is provided with an inner inclined surface matched with the inclined surface of the wedge block and a side inclined surface matched with the plane of the second split die; the bottom of the sectioning module is in sliding fit with the T-shaped groove of the base through the T-shaped hanging table. The method comprises the steps that an axial loading mechanism is started to drive a wedge block to move downwards, so that a sectioning module is synchronously expanded in the radial direction, the inner wall of a blank is extruded, and an inner ring rib or a boss is preliminarily formed; and the rotary loading mechanism is started to drive the internal expanding mechanism and the blank to rotate, meanwhile, the radial loading mechanism is started to drive the conical roller to continuously roll the outer wall of the blank, and final forming is completed.

The invention discloses a contact pin part cold extrusion forming process, a die and a die using method. The contact pin part cold extrusion forming process comprises the steps of bar punching and blanking, sand blowing, cleaning, primary extrusion, deburring, sand blowing, cleaning, secondary extrusion and machining. The forming die comprises a first-order extrusion die and a second-order extrusion die. Through combination of first-order extrusion and second-order extrusion, material flow of the first-order extrusion and the second-order extrusion can be reasonably distributed, plastic forming of metal is facilitated, and the service life of the die is prolonged; as the junction of the waist-shaped column and the T-shaped connecting main body is in a sharp corner state, a forge piece forming metal flowing mode is changed through a two-sequence extrusion mode, the problem of material tearing at the sharp corner is avoided, the streamline of the part is complete, the mechanical property is good, and the conductivity of the part is ensured; secondary forming is matched with little machining, the cutting allowance and the cutting face are reduced, the utilization rate of raw materials is increased, the production efficiency is improved, the production cost is reduced, and the market competitiveness is improved.

The invention belongs to the field of forming methods, and discloses an impact hydraulic multi-step forming process method, which comprises the following steps of: placing a plate blank on a die body, enabling the plate blank to be positioned below a concave die, and keeping a first preset distance between the plate blank and the concave die; and a punch arranged in the die body is driven to move towards the plate blank, the forming liquid contained in the die body is extruded through the punch, the forming liquid forms high-speed jet flow, first-time hydraulic impact is conducted on the plate blank, and the plate blank generates local or overall deformation towards the female die. After the first impact is completed, the punch is controlled to return to the initial position, the position of the female die is adjusted, and a second preset distance is formed between the female die and the plate blank. And the second preset interval is smaller than the first preset gap, the forming liquid is more difficult to leak from the edge area of the plate blank, and the liquid pressure of the forming liquid can be increased. And the punch is driven again to move towards the plate blank, the extrusion forming liquid generates second jet flow to impact the plate blank, the plate blank is further subjected to plastic deformation and finally completely attached to the female die molded surface, and final forming of the plate blank is achieved.

The utility model relates to the technical field of cold extrusion forming, in particular to a combined type bevel gear cold extrusion tool which comprises an upper bottom plate and a lower bottom plate, the bottom of the upper bottom plate is in bolted connection with an upper fixing plate, and the bottom of the upper fixing plate is in bolted connection with a punch fixing plate. Through the punch fixing plate, the guide column, the punch, the positioning plate, the pin and the positioning block, the upper die and the lower die of the device are matched with the guide grooves of the lower fixing plate and the positioning plate through the guide column, and the guide column is in clearance fit with the guide grooves of the lower fixing plate and the positioning plate, so that the accuracy of the cold extrusion bevel gear can be ensured; according to the split assembly mode, different materials can be selected according to stress conditions of different parts, abrasion and deformation of the tool can be effectively reduced, the service life of the tool can be prolonged, if a certain part of the tool is abraded, the part of the tool can be replaced, and the cost is reduced. Maintenance and replacement are simple, and the replacement cost is low.

1. The name of the design product: extrusion pad (metal mold). 2. The use of the design product: the product is used for the production of seamless pipes and profiled pipes, in the process of extrusion forming, between the extrusion rod and the high-temperature blank, the die that increases the deformation amount. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view 1.

The invention discloses a heterogeneous alloy hot extrusion connection method based on an asymmetric corrugated contact surface, belongs to the technical field of hot extrusion forming, and solves the technical problems of contact surface shape design and process parameter design in the hot pressing combination process of metal alloys with different hardness. Comprising the following steps that S1, corrugated contact surfaces are prepared on to-be-connected end faces of a hard alloy column and a soft alloy column respectively, S2, the to-be-connected end faces are subjected to surface treatment, S3, hot extrusion connection is conducted, and hot extrusion connection of the heterogeneous alloy is completed. According to the invention, the asymmetric corrugated contact surface is designed on the to-be-connected end surface of the heterogeneous alloy, so that the plastic flowing direction of the soft alloy can be effectively guided in the hot pressing process, and the gap area can be more fully filled with the soft alloy; by designing the ratio of the tooth height to the tooth pitch on the to-be-connected end faces of the hard alloy column and the soft alloy column, a clear design criterion is provided for optimizing contact surface matching, effective combination can be achieved under the condition of low deformation, and the structural stability under the condition of high deformation is improved.

The invention relates to the technical field of aluminum profile extrusion forming, in particular to automobile profile high-precision extrusion equipment which comprises a machine base, a U-shaped die holder slidably mounted at the front end of the machine base and a circular extrusion die mounted in the die holder. Through the arrangement of the vibration assembly and the stabilizing piece, the electromagnetic coil in the vibration assembly can drive the permanent magnet to generate high-frequency micro-amplitude vibration under the cooperation of the supporting frame after being electrified, and the vibration directly acts on an extruded aluminum blank area at the front end of the extrusion die; the high-frequency vibration can promote bubbles in the aluminum profile to rapidly migrate to the surface and be discharged along with plastic flow of the aluminum material in the extrusion process, surface defects and internal performance hidden dangers caused by bubble retention are effectively avoided, meanwhile, the conduction frequency of the vibration assembly can be accurately adjusted according to the thicknesses and materials of different profiles through a control system, and the production efficiency is improved. And the forming precision and the structural strength of the automobile profile are improved.

The invention belongs to a plastic processing technology, and relates to a cold and hot combined extrusion forming device and method for improving the thickening ratio of an aluminum alloy pull rod. In the differential temperature hot extrusion process, a pipe closing-in area is still in a warm forming temperature range, and the mechanical property of materials in the area can be reduced. The cold and hot combined extrusion forming device comprises a thickening mold, a heating ring, a heat insulation plate, a closing-in mold and a thermocouple, the heat insulation plate is arranged between the butt joint end faces of the thickening mold and the closing-in mold, and after the thickening mold, the heating ring and the closing-in mold are combined, a complete thickening closing-in cavity is formed inside. Wherein the cavity span of the thickening mold comprises a non-closing thickening area and a partial closing area, and the cavity span of the closing mold is the remaining closing area; a heating ring is arranged on the outer ring face of the thickening die, and the thermocouple penetrates through the heating ring and extends to be close to the inner wall of the thickening die. Compared with a differential temperature hot extrusion process needing an additional cooling device to cool a non-deformation area of the pipe, plastic deformation of the pipe closing-in area belongs to cold forming, the instability risks of pipe wrinkling, buckling and the like can be reduced, the pipe thickening forming limit is improved, the mechanical property of the extruded pipe can be improved through the cold work hardening effect, and the device is simple in structure and low in cost. And a pipe cooling device is not needed. In addition, only the thickening mold is heated, and the mold preheating time is shortened.

The utility model relates to the technical field of extrusion forming, in particular to a continuous extrusion forming unit, a die and a device. The continuous extrusion forming unit comprises a shaping piece and a flow control piece; the shaping piece is provided with a shaping hole; the inner wall of one side of the shaping hole is provided with a shaping protrusion protruding towards the other opposite side of the shaping hole. The flow control piece is provided with a flow control hole and a flow promoting groove, and the flow control hole is communicated with the flow promoting groove; the flow control hole is communicated with the shaping hole, and the projection of the shaping hole in the first direction is located in the contour of the flow control hole; the flow promoting grooves are recessed in the direction opposite to the protruding direction of the shaping protrusions. The continuous extrusion forming unit can form a product with a groove.

The invention provides a shell extrusion and necking single-station continuous forming method which comprises the following steps: an extrusion forming step: placing a blank in a female die cavity of a lower female die, and after an extrusion male die is assembled on an upper die plate, controlling an upper die assembly to descend so as to extrude the blank, so that the blank is formed into a blind hole shell with preset wall thickness and bottom thickness; and shell necking, specifically, the upper die assembly is controlled to ascend so that the extrusion male die can be disengaged from a cavity opening of the female die cavity, the extrusion male die can be detached from the upper die plate, the necking die can be assembled on the upper die plate, and the upper die assembly is controlled again to descend till the conical opening and the top end of the blind hole shell are buckled to form a necking shell. High-quality forming of a necking shell component can be achieved by replacing the male die in the upper die assembly and sharing the same set of lower die assembly, die replacement time consumption is effectively reduced, blank heat dissipation is reduced, efficient necking of a shell is ensured, the forming quality of the necking shell is improved, and the die manufacturing cost and the product forming cost are effectively reduced.

The present application relates to a kind of gear machining process for one-way engagement.The present application includes S1, blanking: providing blank;The blank is annealed;Carry out shot blasting treatment;Phosphorus saponification surface treatment is carried out to facilitate surface lubrication;By the plastic deformation mode of extrusion material, form two connected cylinders of different sizes;Cold extrusion after the blank of shrinkage diameter is carried out cold extrusion flat processing;Preform outer circle spline extension initial step;Carry out recrystallization annealing treatment;Carry out shot blasting treatment;Phosphorus saponification surface treatment is carried out;One-time extrusion forming inner hole ratchet tooth, outer circle involute gear and involute straight spline;The workpiece after extrusion forming is turned;The workpiece after turning is treated by heat treatment carburizing quenching;The workpiece after carburizing quenching is treated by tempering;Carry out shot blasting treatment.The present application improves the single-tooth strength of inner hole ratchet tooth and outer circle involute gear, and can greatly improve production efficiency and reduce production cost.

The invention discloses a technological method for removing quenching residual stress of thin-wall long-barrel-shaped 7A09 aluminum alloy, which comprises the following steps: (1) backward extrusion forming: heating a 7A09 aluminum alloy bar, preserving heat, and performing hot backward extrusion forming to obtain a thin-wall long-barrel-shaped forge piece; (2) machining an inner hole: machining a central through hole in the obtained forge piece; (3) solution treatment: heating the obtained forge piece to 470 + / -5 DEG C, preserving heat, and then carrying out water-cooling quenching; (4) composite cold deformation is conducted, specifically, within 4 hours after the step (3) is completed, a cold deformation tool is used for conducting cold deformation on the forge piece on an oil press; and (5) aging treatment is conducted, specifically, the obtained forge piece is heated to 121 + / -5 DEG C, heat preservation is conducted, and then air cooling is conducted. According to the method, directional release and uniform regulation and control of quenching residual stress are achieved through precisely-controlled composite cold deformation, and the dimensional precision and structural integrity of a component are ensured while material strength loss and machining damage are avoided.

The invention discloses a method for preparing a dual-phase heterogeneous deformation mechanism tin bronze alloy through stacking fault energy-oriented Sn content regulation and control and the alloy, and relates to the technical field of metal materials. The method comprises the following steps: determining a critical component window of a low-Sn glide region and a high-Sn twinborn region on the basis of an influence rule of Sn content on an alpha-Cu solid solution stacking fault energy and a deformation mechanism; through the combination of melt instantaneous cooling induced nucleation and a rheological extrusion forming process, the synergistic distribution of two phases on the microscopic scale is realized in the tin bronze alloy. In the plastic deformation process of the obtained tin bronze alloy, dislocation slippage is used as a dominant deformation mechanism in a low-Sn area, mechanical twinning is used as a dominant deformation mechanism in a high-Sn area, and a heterogeneous deformation coordination mechanism is formed. The alloy prepared through the method shows excellent strength and toughness, and therefore a new path is provided for design and preparation of the high-performance copper alloy.

The present application relates to a kind of for heterogeneous metal differential regulation extrusion cladding device and method, belong to metal composite processing technical field, solve the uneven cladding layer thickness, interface bonding strength low and the problem of insufficient production efficiency in prior art due to heterogeneous metal plastic deformation ability difference.It comprises coaxially arranged extrusion head, extrusion cylinder, extrusion rod and ring track structure of extrusion ring rod, the extrusion ring rod can be assembled multiple metal cladding ring.The key is that extrusion rod and extrusion ring rod can move independently or cooperatively.The method comprises: counter-extrusion forming tubular blank, preheating cladding ring and loading into track, and differential propulsion is used to realize layered plastic cladding of cladding ring on the inner wall of pipe blank.The method can control the uniformity of cladding layer thickness within ±5.0%, interface bonding strength ≥200MPa, production efficiency is significantly improved, and is suitable for aerospace, electronic devices and other fields of high-performance composite pipe preparation.

The utility model relates to the field of extrusion forming equipment, in particular to a continuous extrusion forming unit, a die and a device. The continuous extrusion forming unit comprises a cutting piece, a flow dividing piece and a shaping piece. The flow dividing piece is detachably connected with the dividing piece; the flow dividing piece is provided with a plurality of first flow dividing holes distributed around the axis of the dividing piece. The shunting piece is propped against the shaping piece; the shaping piece is provided with a shaping hole, and the axis of the shaping hole coincides with the axis of the dividing piece. Each first shunting hole is communicated with the shaping hole; wherein the dividing piece is provided with a dividing protrusion protruding towards the flow dividing piece; the dividing piece is used for guiding materials to flow into the first flow dividing holes. The continuous extrusion forming unit is easy and convenient to disassemble and replace, the maintenance efficiency can be improved, and the maintenance cost can be reduced.

The extrusion forming device of the magnesium alloy thin-wall inner-ring high-rib component comprises a female die, a male die and a pulse current device, a magnesium alloy blank is cylindrical, and a blank inner cavity is formed in the center of the magnesium alloy blank; a cavity with an opening in the top side is formed in the female die, and a magnesium alloy blank is embedded into the cavity downwards; the male die is located over the cavity and ascends and descends, a plurality of ribs are transversely arranged on the side wall of the male die in a protruding mode, the ribs are longitudinally arranged at intervals, grooves are formed between the adjacent ribs, the male die is composed of a plurality of petal parts, the petal parts can be transversely away from each other and expand outwards, and after the male die is inserted into the inner cavity of the blank, the inner wall of the inner cavity of the blank is extruded through the ribs. Filling the groove with a magnesium alloy blank; and a cathode and an anode of the pulse current device are electrically connected with the male die and the female die respectively, so that the ribs can perform partial discharge on the magnesium alloy blank. The fluidity of the magnesium alloy blank is effectively improved, the extrusion resistance is reduced, the magnesium alloy blank is filled in the groove, the forming precision is improved, and the integrated thin-wall high-rib component is formed.

The invention provides a screw forge piece forming method and device based on a GH4698 alloy bar, and is applied to the technical field of forging forming optimization. The method comprises the steps that first technological parameters are adopted, an extrusion die with a technological blind hole is matched to conduct extrusion forming treatment on a GH4698 alloy bar, and an initial screw forge piece with a technological residual block is obtained; state variables of the initial screw forge piece at all moments in the extrusion forming treatment process are obtained, and the state variables comprise the temperature, the equivalent strain and the deformation resistance; if all the temperatures, all the equivalent strain and all the deformation resistance meet the preset conditions, the initial screw forge piece is determined as a target screw forge piece; and if all the temperatures, all the equivalent strain and all the deformation resistance do not meet the preset conditions, the first technological parameters are updated, second technological parameters are obtained, then the GH4698 alloy bar is subjected to extrusion forming treatment in cooperation with an extrusion die, and the target screw forge piece is obtained. And the qualified rate of the macroscopic grain size is improved.

The application provides an extrusion forming device and method for a complex cross-section profile, and relates to the technical field of metal product forming. The extrusion forming device comprises a press, a die, a glass pad, a heat preservation device and a current heating device. The die comprises a lower die provided with an extrusion channel and a sizing belt. The extrusion channel is used for detachably mounting a blank arranged along the extension direction of the extrusion channel and the glass pad. The heat preservation device is connected with the lower die. An extrusion rod is arranged above the die and is used for inserting into the extrusion channel and abutting against the blank. The current heating device is connected with the extrusion rod and the lower die and is used for applying a current field to perform current heating on the blank, so that the glass pad is melted and adhered to the end face and part of the circumferential side face of the blank to form an intermediate piece. The intermediate piece is used for entering the sizing belt under the extrusion of the extrusion rod to form the complex cross-section profile. The application can increase the application range of the extrusion forming device.

According to the machining device and method for the light high-strength high-modulus anti-fatigue pull rod, an inductance coil is installed outside a ceramic mold in a sleeving mode, and a screw arranged in a threaded hole in the center of an installation flange is embedded into the center of the installation end of the ceramic mold in a sleeving mode; a space cavity formed by the inner surface of the ceramic mold and the screw is used as a forming structure of a pipe blank forming end; in the process of extruding and forming the end part of the single side of the pipe blank, an alternating magnetic field is generated by an inductance coil to carry out induction heating on the pipe blank entering a large-diameter closing area in the ceramic mold, and the water-based graphite on the outer sides of a thick-wall area and a transition area of the pipe blank firstly forms a dry film; and the thick wall area and the transition area of the pipe blank are continuously and sequentially extruded into the large-diameter closing-in area, the equal-diameter stability increasing area and the small-diameter closing-in area, and extrusion forming of the single-side end of the pipe blank is achieved. According to the method, the problem that hollow fusiform products such as pull rods cannot be formed by the aluminum-based composite material through a traditional cold rotary swaging or hot extrusion process due to the fact that the reinforcement phase proportion of the aluminum-based composite material is increased is solved.

The invention discloses a machining method for a large-helix-angle internal-thread copper pipe, and relates to the technical field of thread copper pipe machining, and the machining method comprises the steps that a round copper pipe is adopted as a pipe blank, and surface cleaning and straightness correction treatment are conducted on the pipe blank; clamping the treated pipe blank in spinning forming equipment, sleeving the front end of the pipe blank into a threaded core head, and guiding and positioning by matching with a moving core; the spinning equipment is started, continuous cold extrusion is carried out on the pipe blank through the external spinning ring under the synergistic effect of rotating motion and axial feeding, and an initial thread structure with a preset lead angle is formed along the inner wall of the pipe blank in the rotating process; during cold extrusion forming, the threaded core head and the moving core jointly maintain inner cavity supporting and tooth profile transmission; after spinning forming is completed, the copper pipe with the internal threads is guided into a sizing procedure, and size finishing is conducted on the outer diameter of the pipe body through a precise sizing die; the wall thickness distribution of the pipe body is synchronously controlled in the sizing process, so that the thickness of the bottom wall is uniform and meets the structural strength requirement.

The utility model relates to the technical field of multi-die-position cold extrusion forming, and discloses a multi-die-position cold extrusion forming device for a pin shaft, which comprises a square plate, a rotating mechanism is arranged on the right side of the square plate, an adjusting mechanism is arranged on the top of the rotating mechanism, a cleaning mechanism is arranged on the left side of the adjusting mechanism, and the cleaning mechanism is arranged on the right side of the adjusting mechanism. A sliding mechanism is arranged on the rear side of the adjusting mechanism and the rear side of the cleaning mechanism. And the rotating mechanism comprises a first hollow pipe, the left side of the first hollow pipe is fixedly connected to the interior of the square plate, a plurality of clamping strips are fixedly connected to the top of the interior of the first hollow pipe, gears are connected to the outer walls of the multiple clamping strips in a meshed mode, and a first connecting rod is fixedly connected to the middle of each gear. According to the utility model, the motor is started and the hollow pipe I is used as a core supporting part, so that the reduction of positioning precision caused by gravity center shift is avoided, and the partition plate outside the gear effectively prevents dust and foreign matters from entering a transmission area, thereby ensuring the meshing precision.

The invention relates to the technical field of magnesium material extrusion equipment, and discloses a magnesium alloy bar extrusion forming device which comprises a supporting frame, a workbench is fixedly connected to the inner wall of the supporting frame, a first hydraulic cylinder is fixedly connected to the outer wall of the workbench, a second hydraulic cylinder is fixedly connected to the top of the supporting frame, and a shaping mechanism is arranged on the outer wall of the supporting frame. And the shaping mechanism comprises a guide block, the end, close to the supporting frame, of the guide block is fixedly connected with the outer wall of the supporting frame, the guide block is used for supporting the magnesium material, a flow guide cavity is formed in the inner wall of the guide block, the cavity wall of the flow guide cavity is fixedly connected with a first flow guide plate, and the first flow guide plate is spirally arranged in the flow guide cavity. The shaping mechanism is arranged for guiding and supporting the magnesium material subjected to extrusion forming, the situation that the magnesium material is deformed under the action of the gravity due to the too high temperature, the appearance regularity of the formed magnesium rod is affected is prevented, and the stability of extrusion forming of the magnesium material is enhanced.

The application relates to the technical field of extrusion forming equipment, and discloses a nano-filler dispersion enhanced bio-based material melt blending forming method, which comprises the following steps: adding nano-filler and bio-based material into a sleeve through a hopper, starting a motor to drive a rotating rod to rotate, making conveying blades one send the material into an extrusion cavity, and heating the material through a heating bin in the conveying process; extruding and stirring the material to a molten state through stirring blades one and stirring blocks, then cooling the material through a cooling bin to prevent the material from being excessively heated, and sending the material into a shunting mechanism; shunting and stirring the molten material again through the shunting mechanism to make the material mixing more uniform. The material is extruded and shunted through the shunting mechanism, the nano-filler is prevented from agglomerating in the extruding and stirring process, the nano-filler cannot be mixed with the biological material, the uniformity of material blending is improved, and the stability of the finished product after material forming is improved.