16 results about "Squeeze casting" patented technology

A mandrel assembly (100) for net-shape casting of an undercut finocyl grain (133) with aft-end counterbore (140) in a solid propellant rocket case (101) comprising a core (105) capable of forming central cylindrical cavities in the grain and a plurality of fins (106) capable of forming a plurality of forward-swept longitudinal cavities circular patterned around the core. The method of assembling and disassembling the mandrel (100) comprises the acts of hanging the plurality of fins (106) from the core (105) using a fin hanger (107) with a plurality of long and flexible fin cables (108), hoisting the mandrel assembly (100) over the case aft-end aperture (104), bundling the fins (106) and lowering the mandrel assembly (100) inside the case (101), fastening of all the fins (106) to the core (105) and the core (105) to the case (101), inverting the total assembly, casting propellant slurry through case fore-end aperture (103), curing the propellant, inverting the total assembly back, removing core (105) first, assembling fin decoring tool (134) and removing fins (106) one by one, to obtain net-shape cast undercut finocyl grain (133) with aft-end counterbore (140) without employing squeeze casting or propellant machining.

This utility model relates to the field of wheel hub casting, and more particularly to an aluminum-steel wheel hub extrusion casting mold with thermal fatigue resistance. This utility model provides an aluminum-steel wheel hub extrusion casting mold with thermal fatigue resistance, including a bracket, electric push rods, side molds, a cylinder, an upper mold, a lower mold, and an air outlet pipe. Electric push rods are installed on both sides of the bracket, and side molds are connected to the adjacent sides of the two electric push rods. A cylinder is installed on the top of the bracket, and the upper mold is connected to the output shaft of the cylinder. After the two side molds are fitted together, the upper mold and the lower mold can be completely fitted together. Fixing blocks are installed on both the front and rear sides of each side mold, and air outlet pipes are installed on the fixing blocks. The beneficial effects of this utility model are: 1. By setting up air outlet pipes, the continuous output of cold air from the air outlet pipes will cause the temperature of the two side molds to drop evenly. After the temperature stabilizes, the cast wheel hub will not crack, and the production efficiency will also be improved.

The application discloses a composite core which can be used for extrusion casting and pressure casting, and is composed of an inner core and a sand core layer, and can be used for extrusion casting and pressure casting, and can make the core free from preheating, and the sand core layer can be easily collapsed, so that the core can be easily taken out after the casting is completed.

This invention relates to the field of hypereutectic aluminum-silicon alloy material preparation technology, and in particular to a method for preparing hypereutectic aluminum-silicon alloy materials by extrusion casting. The preparation method includes the following steps: melting ZL109 aluminum alloy, adding Al-30Si master alloy, heating to 820-850℃ and holding for 15-20 minutes; then adding a refining agent for refining; cooling to 750-770℃, adding a refining agent, and holding at this temperature; and finally casting into a mold for extrusion casting to obtain the hypereutectic aluminum-silicon alloy material. This invention simplifies the melting process, obtains a uniform hypereutectic aluminum-silicon alloy microstructure, significantly refines the grain size and primary silicon size, and improves the mechanical properties of the hypereutectic aluminum-silicon alloy material.

The utility model provides a new energy electric vehicle drive casing mould cavity relates to new energy electric vehicle drive casing's casting mould technical field, including mould main part, the top of mould main part is equipped with two split gates, the inside of mould main part is equipped with the cavity main part in one side of two split gates, the both sides of the cavity main part in mould main part are equipped with overflow groove, the one side of the cavity main part in mould main part is equipped with exhaust system. The improvement of traditional extrusion casting mould one mould one cavity, adopt the design of many split gates, compared with the advantage of single internal flow channel is to make molten metal as possible more uniform delivery to each gate, the liquid that flows into the metal cavity is as possible big, flows smoothly. Under the condition of satisfying the forming requirement of casting, improve the productivity, adopt the design of tubular inner gate fully consider the shape characteristics and forming capacity factors of the part, thereby obtain high performance, high quality casting.

This invention discloses a green and energy-saving extrusion casting method and apparatus that combines liquid phase retention and forced feeding sequential solidification. The method includes the following steps: melting a pre-proportioned metal to obtain a basic alloy melt; degassing and refining followed by the addition of an intermediate alloy to obtain an intermediate alloy melt; lowering the temperature to obtain a finished alloy melt; during casting, adjusting the ingate temperature between the solid and liquid phases of the finished alloy melt; and activating a multi-point positioning cooling device to locally force-cool areas with large wall thicknesses. This invention, by precisely controlling the ingate temperature between the solid and liquid phases of the alloy melt, ensures that the alloy melt at the ingate is in a solid-liquid mixed state during pressure holding solidification. The liquid alloy melt can smoothly pass through the gap between the primary solid phases and flow into the shrinkage cavities of the casting body during pressure holding solidification, achieving further forced feeding of the liquid during the pressure holding process of alloy melt extrusion casting. This results in high-quality castings with high microstructure density, few shrinkage cavities and porosity defects, and excellent strength and elongation.

The application discloses an aluminum-based silicon carbide composite material for an optical communication terminal and a preparation process thereof. The aluminum-based silicon carbide composite material is prepared by an extrusion casting process, and aluminum alloy is used as a matrix and silicon carbide particles are used as a reinforcing phase. The volume ratio of the silicon carbide particles to the aluminum alloy is 60:40, and the particle size of the silicon carbide particles is 10-50 mu m. The aluminum-based silicon carbide composite material is used to replace traditional aluminum alloy, and the light weight, high stability and high efficient heat dissipation of the optical communication terminal are improved simultaneously. The high specific stiffness of the aluminum-based silicon carbide composite material is combined with a 'truss type + hollow' structure design, so that the vibration resistance stability is significantly improved. The extremely low thermal expansion coefficient is combined with a symmetrical structure and a thermal compensation design, so that the sub-micron level pointing accuracy requirement is met. In addition, the material itself has excellent radiation resistance and corrosion resistance, and can meet the on-orbit operation requirement for more than 15 years, and provides core material support for the next generation Tb-level high-speed optical communication equipment and space-air-ground integrated network construction.

The application provides an extrusion casting crucible heat preservation furnace with air inlet and outlet anti-blocking structure and relates to the field of crucible heat preservation furnace. The device comprises a heat preservation furnace body, a pipeline connecting boss is fixedly connected to the left side of the inner wall of the heat preservation furnace body, an air inlet pipe and an air outlet pipe are arranged on the inner front and back sides of the pipeline connecting boss, and a pipeline anti-blocking mechanism is arranged in the air inlet pipe and the air outlet pipe. The device drives the telescopic rod to move through the electric hydraulic rod A, drives the adjusting rod to move through the telescopic rod, drives the rotating wheel to rotate through the adjusting rod, drives the processing block to rotate to the vertical state through the rotating wheel, drives the gear ring to mesh with the power shaft through the combined frame at this time, drives the power shaft to rotate through the transmission chain of the driving motor, drives the combined frame to rotate through the power shaft, drives the rotating pipe to rotate through the combined frame, drives the anti-blocking rod to rotate through the rotating pipe, drives the processing block to rotate through the anti-blocking rod, and the processing block cleans the attachments on the edge of the air inlet pipe nozzle, has the characteristics of preventing pipeline blockage, and has a cleaning effect on the metal chips attached to the edge of the nozzle.

This invention relates to the field of die-casting mold technology, specifically to an extrusion casting mold for an automotive clutch housing. It includes an upper mold and a lower mold below the upper mold. The lower mold has a recessed center on its upper surface. The upper mold has an annular upper mold groove at its center on its lower surface. The upper mold is movably and sealingly connected to the outer inner wall of the upper mold groove. The bottom of the upper mold groove and the lower surface of the upper mold both protrude downwards. The upper surface of the upper mold fits into the bottom of the upper mold groove. This invention, through the movable sealing connection between the upper mold and the upper mold groove, and between the lower mold and the lower mold groove, and the elastic restoring action of the upper and lower springs, combined with the dynamic formation and disappearance of the upper and lower cooling cavities, ensures that both the upper and lower cooling cavities return to zero during die-casting, guaranteeing the support strength of the upper and lower molds and the overall pressure-bearing capacity of the mold. During mold opening and cooling, the upper and lower cooling cavities form synchronously and are adjacent to the mold cavity, improving cooling efficiency.

The application discloses a multi-type core extrusion casting mold, which is applied to multi-type cavity extrusion casting and adopts the relative fixing of each type core and an upper mold plate to form a mold, and each type core and the upper mold plate can be relatively moved after the mold is formed. The upper mold plate intermittently extrudes, each type core is left in a casting, and the type core is taken out after the extrusion is completed and the mold is opened.

The utility model relates to extrusion casting technical field discloses a kind of extrusion casting devices, extrusion casting device includes compression chamber, punch, extrusion mechanism and pressurizing mechanism, compression chamber is fixedly connected with fixed mould plate, and the containing cavity for accommodating metal liquid is formed in compression chamber, and the side surface of compression chamber is provided with feed inlet and is connected with feeding runner, and sealing plate is arranged at feed inlet, and sealing plate is used to open or close feed inlet;Punch and compression chamber are slidingly fitted;Extrusion mechanism includes extrusion rod, and punch is fixedly connected at the end of extrusion rod, and extrusion mechanism is based on hydraulic principle to drive extrusion rod to move to make punch push the metal liquid of containing cavity to fill pattern;Pressurizing mechanism drives extrusion rod to move to provide pressurizing thrust to the metal liquid after filling pattern, two processes of filling pattern and pressurizing are completed by two mechanisms respectively, reduce hydraulic thrust, and then the size of hydraulic cylinder overall is reduced, simultaneously, the action in one cycle is reduced, and production efficiency is improved.

This disclosure relates to a method for forming a clutch hub, a mold, and a clutch hub. The method for forming a clutch hub includes: obtaining an aluminum alloy melt; providing an extrusion casting mold for the clutch hub and filling the extrusion casting mold's cylinder with the aluminum alloy melt; pressing and holding the aluminum alloy melt after filling to form a solidified aluminum alloy casting; performing an incomplete solution treatment on the solidified aluminum alloy casting; performing an aging treatment on the aluminum alloy casting after the incomplete solution treatment; and finishing the outer surface and inner assembly surfaces of the aging aluminum alloy casting to obtain the finished clutch hub.

This application discloses an ultrasonic-assisted extrusion casting apparatus and method, solving the technical problem of low density in high-purity aluminum castings in the prior art. The ultrasonic-assisted extrusion casting apparatus includes: a mold assembly with a gating system and a casting cavity; the gating system has an inlet and an outlet, and the cross-sectional area of ​​the gating system decreases sequentially from the inlet to the outlet; the outlet is connected to the casting cavity; an injection assembly with an injection chamber connected to the inlet of the gating system; the injection assembly includes a first driving member and an injection rod connected to each other, causing the injection rod to reciprocate within the injection chamber to sequentially extrude molten metal into the gating system and the casting cavity; and an ultrasonic component including a first amplitude transformer and a second amplitude transformer, the working ends of which extend into the inlet and outlet of the gating system, respectively; the ultrasonic frequency of the first amplitude transformer is lower than that of the second amplitude transformer. The casting apparatus provided by this application improves the density of the castings.

The application provides an Al-Cu-Mn-Ca alloy and a preparation method thereof. The raw material of the alloy comprises, in percentage by mass: Cu: 4-5%, Mn: 0.5-1%, Ca: 0.5-1%, Ti: 0.1-0.3%, and the balance of Al; and the total amount of impurities Fe, Si and Mg is less than 0.2%. The alloy provided by the application can increase the casting performance of the alloy by adding a proper amount of Ca element to the Al-Cu-Mn alloy, can improve the strength of the aluminum alloy material by fully utilizing the precipitation strengthening of the Al2Cu phase under the premise of ensuring the good casting performance of the alloy, and can manufacture the high-strength and high-toughness casting aluminum alloy with excellent casting performance by adopting the extrusion casting process.

The application discloses a kind of doped element modified casting aluminum alloy, preparation method and its application, the aluminum alloy is Al-Si-Mg-Cu as matrix, doping any one or more in La, Ce, Zn, and the mass ratio of doping element is 0.1%~1.9%.Preparation method includes raw material smelting, melt purification pouring, solid solution-ageing treatment, and the doped element modified casting aluminum alloy is obtained by using metal type gravity pouring, and then extrusion casting is made into structural member.The application realizes α-Al dendrite refinement and eutectic Si efficient modification by the synergistic effect of doping element, greatly improves the mechanical properties such as tensile strength and hardness of alloy, while maintaining excellent plasticity, and the matching of strength and plasticity is excellent, which can be used for preparing automobile lightweight castings, and solves the technical shortcomings of traditional casting aluminum alloy, such as coarse structure and insufficient matching of strength and plasticity.

This invention relates to the field of high-performance aluminum alloy materials and component manufacturing, and provides a method for improving the high-temperature resistance of hypoeutectic aluminum-silicon alloys. The invention uses industrial pure aluminum, an aluminum-silicon master alloy, pure magnesium, and an Al-6%TiB2 master alloy prepared by a mixed salt reaction method as alloy raw materials. The alloy composition, by mass fraction, includes: Si: 3.5–7.5%, Mg: 0.3–0.4%, TiB2: 0–5%, with the remainder being Al and other impurity elements. Indirect extrusion casting technology is used to prepare aluminum-silicon alloy castings with different mass fractions of TiB2 particles. The TiB2 particles are uniformly distributed and tightly aggregated with the alloy matrix, significantly improving the material's high-temperature resistance and mechanical properties under medium- and high-temperature conditions.