109 results about "Aluminium casting" patented technology

The invention relates to the technical field of casting, in particular to a water-soluble salt core for aluminum castings and an injection molding preparation process thereof.The water-soluble salt core is composed of a heterogeneous layered composite material system, and the heterogeneous layered composite material system comprises an eutectic mixture formed by superfine monopotassium phosphate and sodium citrate and used as a base material, the nano palygorskite fiber is used as a reinforcing phase; the functional layer formed by the polyvinyl alcohol film is wrapped on the outer layer; and sodium bicarbonate; according to the water-soluble salt core for the aluminum casting and the preparation technology of the water-soluble salt core, through the improved raw material formula and the innovative preparation technology, the defects in the prior art are effectively overcome. In the aspect of a raw material formula, an eutectic mixture formed by superfine monopotassium phosphate and sodium citrate which are mixed in a specific proportion is used as a base material, and the eutectic mixture has good chemical stability and thermal stability and can provide basic strength and forming performance for the water-soluble salt core.

The invention discloses a forging forming process for an aluminum casting chassis supporting arm implanted with a steel plate framework, and relates to the technical field of metal composite material forming. The method comprises the following steps: 1, pretreating a steel plate framework; 2, assembling the mold; 3, performing semi-solid extrusion; 4, sequentially carrying out segmented heat treatment of solid solution at 535 DEG C for 2 hours, water quenching and aging at 175 DEG C for 8 hours; and 5, the cooling rate is controlled to be 5 DEG C / min under a 0.15 T rotating magnetic field, and solidification is completed. Through a quadruple synergistic mechanism of micro anchoring structure-gradient coating-semi-solid extrusion-segmented heat treatment, the shear strength of a composite interface reaches 60-105 MPa, the tensile strength of a final component reaches 311-322 MPa, the fatigue life is prolonged to 120 million times from 500 million times, the lightweight target that the weight is reduced by 50% compared with that of a pure steel part is achieved, and the production cost is reduced. The defects of insufficient strength, infirm aluminum / steel interface bonding, pore shrinkage and brittle phase of a traditional aluminum casting piece are overcome.

The invention provides an automobile display screen supporting aluminum casting frame plasma welding device, and belongs to the technical field of plasma welding, the automobile display screen supporting aluminum casting frame plasma welding device comprises a welding assembly, the welding assembly is configured to weld aluminum casting welding cracks and polish welding positions, and the welding assembly comprises a welding head used for welding; the sleeve is movably arranged outside the welding head; the telescopic devices are used for controlling the welding heads to move and are symmetrically arranged outside the sleeve; and the multiple sets of grinding assemblies are used for removing welding disintegrating slag and symmetrically arranged at the bottom of the sleeve, and the welding heads are arranged in the multiple sets of grinding assemblies. The polishing assemblies are arranged on the two sides of the welding pipeline, the polishing assemblies can polish the welding position, and the welding head on the lower portion of the welding pipeline can weld cracks generated in the aluminum casting process.

The utility model discloses a cooling device for aluminum casting production, which comprises a base, a pair of bearing seats with bearings and a sliding rail are respectively arranged on the base, a screw rod is arranged between the bearing seats, the screw rod is driven by a motor, a threaded block is in threaded connection with the screw rod, the sliding rail is positioned below the screw rod, and the lower part of the threaded block is in sliding connection with the sliding rail. A working box body is arranged above the threaded block, the interior of the working box body is divided into a liquid cooling area and an air cooling area, cooling liquid is injected into the liquid cooling area, mounting plates are arranged on the left side wall and the right side wall in the air cooling area, and small fans are arranged on the mounting plates; a top plate is arranged at the tops of the stand columns, a large fan and a pair of telescopic rods are arranged at the bottom of the top plate, connecting rods are arranged at the ends of piston rods of the telescopic rods, and a filter plate is arranged between the connecting rods. The liquid cooling area and the air cooling area are arranged and can be switched, so that the aluminum casting is subjected to liquid cooling and then subjected to air cooling, the air drying speed of water spots can be increased, and the working efficiency is improved.

The invention discloses aluminum oxide foamed ceramic for casting and filtering molten aluminum and a preparation method of the aluminum oxide foamed ceramic, and belongs to the technical field of aluminum oxide ceramics. The method comprises the following steps: firstly, carrying out plasma activation on polyurethane foam, then immersing the polyurethane foam into a composite modifier system consisting of a main modifier, an auxiliary modifier and a catalyst, and sequentially carrying out first-stage grafting and second-stage cross-linking reaction to introduce carboxyl-hydroxyl composite functional groups and a heterocyclic cross-linking structure to the surface of the foam, so as to obtain a modified precursor; uniformly coating the precursor with aluminum oxide ceramic slurry by adopting a vacuum-pressure alternate impregnation method, and finally drying and sintering at high temperature to obtain a finished product. By constructing a strong interface bonding layer, the adhesion uniformity and firmness of ceramic slurry on an organic precursor are remarkably improved, the aluminum oxide foamed ceramic which is compact in framework, few in defect, high in mechanical strength, excellent in filtering performance and resistant to molten aluminum erosion is obtained, and the aluminum oxide foamed ceramic is suitable for molten liquid purification of high-end aluminum castings.

The utility model relates to guiding, cutting and split charging equipment for automobile aluminum castings. The guiding, cutting and split charging equipment comprises a rack and a workbench installed on the rack. The positioning mechanism is mounted on the workbench and comprises a positioning column and a profiling positioning block mounted on the positioning column, and an aluminum casting is mounted on the profiling positioning block; the blanking mechanism is installed on the machine frame and located over the positioning mechanism, and the blanking mechanism comprises a pressing assembly and a cutting assembly; the material taking mechanism is installed on the machine frame, located between the positioning mechanism and the blanking mechanism, capable of transversely moving along the machine frame and used for clamping and conveying the blanked aluminum castings to a blanking position. Through the automatic blanking and material taking mechanism, automatic blanking and blanking are achieved, manual operation is reduced, the production efficiency is improved, and the production cost is reduced. And accurate positioning of the aluminum casting in the machining process is ensured through the design of the profiling positioning block and the pressing assembly, and therefore the cutting precision is improved.

The utility model relates to the technical field of aluminum industrial production, in particular to a molten aluminum casting chute baffle. The molten aluminum casting chute baffle comprises a chute, a supporting frame, a guide rod, a first screw rod, a lifting plate, a baffle body, a first gear, a second gear, a motor, a lifting block and a protection assembly, the chute is used for guiding molten aluminum to move from one position to another position, and the supporting frame is installed on the outer side of the chute. The guide rod is connected to the left side in the supporting frame, the first screw is rotationally connected to the right side in the supporting frame, and the lifting plate is slidably connected into the supporting frame. Under the condition that a motor breaks down or is powered off, the height of the second gear can be adjusted to enable the second gear to be disengaged from the first gear, then the first screw is rotated through manual operation, the position of the baffle is adjusted, production continuity and safety are guaranteed, and the reliability and adaptability of the system are greatly enhanced through the design of the double modes (automatic / manual operation).

The invention discloses five-axis saw cutting equipment for aluminum castings, relates to the technical field of saw cutting equipment, and aims to solve the technical problem that saw cutting machining is affected due to the fact that the cutting angle of a saw blade easily interferes with an aluminum casting body when traditional saw cutting equipment is used for saw cutting machining of irregular aluminum castings. Comprising a five-axis sawing machine tool with an outer shell detachably installed outside. The five-axis sawing machine tool comprises a machine tool base, a Y-axis linear moving assembly and a Z-axis linear moving assembly are detachably installed on the two sides of the top of the machine tool base respectively, and an X-axis linear moving assembly is detachably installed on the side, facing the Y-axis linear moving assembly, of the Z-axis linear moving assembly. A movable platform used for adjusting the angle of the aluminum casting is movably arranged on the Y-axis linear moving assembly, and an A-axis deflection assembly used for adjusting the angle of the aluminum casting is detachably installed at the top of the movable platform. The aluminum casting sawing device has the advantage that the flexibility of the aluminum casting in the sawing machining process is improved.

The application discloses a kind of safety automatic control flow's casting equipment, including melt pool, aluminium water inlet pool and pump chamber, melt pool is connected to aluminium water inlet pool by aluminium water channel in furnace, pump chamber is connected with aluminium water inlet pool by bottom inlet channel, impeller is provided in pump chamber, aluminium water outlet channel is connected with aluminium water steady flow pool above pump chamber, aluminium water steady flow pool bottom is provided with steady flow pool flow eye, steady flow pool flow eye is connected with outlet flow groove, steady flow pool flow eye outer end is provided by the plug head for plugging steady flow pool flow eye;Method, S1: melt raw material in melt pool, obtain aluminium water;S2: aluminium water flows into to pump chamber, then flows into to aluminium water steady flow pool;S3: aluminium water in aluminium water steady flow pool, flow into to outlet flow groove;S4: aluminium water in outlet flow groove flows into to corresponding aluminium piece casting tray, corresponding need to be manufactured aluminium piece can be obtained;Effect: method structure is novel, steady flow pool flow eye and melt pool are not directly communicated, increase insurance for aluminium casting safety, guarantee safety.

The utility model discloses a precise aluminum casting sand blasting and polishing device which comprises a sand blasting box, a pair of operation openings are formed in the front face of the sand blasting box, operation gloves are installed in the operation openings, a transparent cover is rotatably installed on the upper surface of the sand blasting box, a filter screen window is further installed on the outer side wall of the sand blasting box, and a sand box is installed on the back face of the sand blasting box. The sand box is connected with a sand pipe through a sand pump, the sand pipe penetrates into the sand blasting box and is connected with a nozzle, an air pipe further penetrates into the sand blasting box, the air pipe is communicated with the tail end of the nozzle through an air pump, and a separation net is further installed in the sand blasting box. According to the utility model, the sand blasting box and the operation gloves are arranged, so that the sand blasting operation on the precise aluminum casting can be carried out in the sand blasting box, and the sprayed abrasive material is left in the sand blasting box and is prevented from overflowing and scattering into the air, so that the sprayed abrasive material can be conveniently collected and treated, and the body health of operators can be protected.

The utility model discloses a multi-shaft hydraulic clamp for an aluminum casting cover piece. The multi-shaft hydraulic clamp comprises a base plate. The multiple sets of positioning pins are connected to the upper end of the base plate and arranged in the length direction of the base plate. The supporting tables are arranged in the length direction of the base plate, and the supporting tables and the positioning pins are arranged in a staggered mode. The telescopic assemblies are symmetrically connected to the two sides of the upper end of the base plate, the multiple telescopic assemblies are arranged in the length direction of the base plate, and the inner sides of the telescopic assemblies are connected with abutting heads acting on the side walls of workpieces. The clamping assembly is arranged on the side portion of the supporting table and connected with the upper end of the base plate, the clamping assembly comprises a clamping arm acting on the bottom of a workpiece, a cylinder base and a hinge arm, the hinge arm is connected with the free end of the cylinder base and drives the clamping arm to rotate, and the cylinder base is provided with a side plate. The clamp matched with the engine cover body is designed, and the engine cover body can be supported and well positioned in the machining process, so that the machining precision is guaranteed, and the efficiency is improved.

The invention relates to a spraying and cleaning integrated device for aluminum castings. The spraying and cleaning integrated device comprises a supporting mechanism, a cleaning mechanism and a blow-drying mechanism. The supporting mechanism comprises a supporting frame, a containing cavity and a rotating mechanism. The placing chamber is arranged on the support frame; the rotating mechanism comprises a rotating table and a driving device; the rotating table is rotationally arranged at the bottom in the containing cavity, and a clamp is arranged on the rotating table. The cleaning mechanism comprises a supporting frame body, a plurality of spraying heads and a driving part; the supporting frame is located on the upper portion in the containing cavity. The plurality of spraying heads are arranged on the lower surface of the supporting frame body, and the driving part is arranged on the outer wall of the placing cavity; the blow-drying mechanism comprises a fan and an air outlet frame body; the draught fan is arranged at the top of the containing cavity, the air outlet frame body is arranged on the inner wall of the top of the containing cavity, an air outlet is vertically formed in the air outlet frame body, and the air outlet directly faces the clamped workpiece on the rotating table. The aluminum casting cleaning and blow-drying device can achieve rapid treatment of spraying cleaning and blow-drying of the aluminum casting, and the aluminum casting does not need to be transferred in the midway.

The invention relates to the technical field of automobile aluminum casting machining, in particular to an automobile aluminum casting uniform cooling device which comprises a mounting frame, a conveying mechanism, a cooling mechanism, a grabbing mechanism and a drying mechanism, and the conveying mechanism is mounted on the mounting frame and used for conveying aluminum castings. The automation level is greatly improved through the conveying mechanism and the cooling mechanism, aluminum castings are conveyed to a cooling area through the conveying mechanism, cooling water is evenly cooled through the spraying assembly, manual intervention is reduced, the production efficiency is improved, multiple functional modules such as conveying, cooling, grabbing and drying are integrated, time waste in the production link is reduced, and the production cost is reduced. According to the aluminum casting production line, the production cycle of aluminum castings is shortened, by arranging the drying mechanism, the cooled aluminum castings can be effectively dried, an independent drying process is not needed, the overall efficiency is further improved, and grabbing and transferring of the aluminum castings are more efficient and accurate through the grabbing mechanism and the transferring frame.

The utility model discloses a plane milling device for aluminum casting machining, and relates to the technical field of aluminum casting machining devices. The device comprises a workbench, a placement seat, a fixed seat, a fixed plate and an electric telescopic rod, a clamping rod is fixed to one end of the sliding seat through a bolt, and a C-shaped groove is formed in the side, close to the containing seat, of the clamping rod. According to the utility model, the limiting mechanism is arranged; the working milling cutter can be driven to move through movement of the output end of the electric telescopic rod, so that plane milling is conducted on a workpiece, the two clamping rods are driven to move oppositely through mechanical transmission in the moving process of the output end of the electric telescopic rod, then the workpiece is clamped and fixed before being milled, the stability of the workpiece during milling is improved, and the working efficiency is improved. And compared with a traditional mode that a workpiece is limited through arrangement of multiple sets of power sources, the use cost of the device is reduced, and the workload of a user during device overhauling is reduced.

The invention relates to the technical field of conveying equipment, in particular to aluminum casting conveying equipment and method.The aluminum casting conveying equipment comprises a mounting rack, a conveying belt and a main control mechanism, the conveying belt is mounted on the mounting rack, and the main control mechanism is mounted on the mounting rack; the switching assembly comprises a pulley yoke, a connecting frame, a transfer placing frame, a position adjusting component, a butt joint component and a self-conduction component. The connecting frame is connected with the mounting rack through the position adjusting component, the pulley yoke is slidably mounted on the connecting frame, the transfer placing frame is connected with the pulley yoke through the butt joint component, the position adjusting component is connected with the mounting rack, the butt joint component is connected with the pulley yoke, and the self-conduction component is connected with the transfer placing frame. The actual conveying range of the conveying mechanism can be flexibly adjusted through arranged components, so that the conveying requirements under different conditions are met, and the conveying mechanism is more flexible and convenient in the actual conveying process.

The utility model discloses aluminum casting air tightness leak detection equipment, which comprises a detection table, an air pump is arranged below the detection table, an air nozzle is fixed on the surface of the detection table, the air pump is communicated with the air nozzle, a first rubber pad is arranged on the surface of the detection table, a round frame is arranged on the outer side of the first rubber pad, and the round frame is arranged on the outer side of the first rubber pad. A barometer is installed on the surface of the round frame, and a sealing cover is arranged on the inner side of the round frame. According to the aluminum casting airtightness leak detection equipment, an aluminum casting is placed in a round frame, an opening in the lower end face of the aluminum casting is attached to a first rubber pad, an adjusting rod is screwed, the adjusting rod pushes an extension rod to extend out of a mounting sleeve through threads, and the extension rod pushes a sealing cover to press downwards until a second rubber pad on the surface of the sealing cover is tightly attached to the opening in the upper end face of the aluminum casting; the air pump is started to inject air into the aluminum casting through the air tap, then the barometer on the round frame is observed, and when the numerical value of the barometer changes, it shows that the air in the aluminum casting leaks outwards, and the air tightness is insufficient.

The utility model discloses a cast aluminum low-pressure casting machine, and relates to the technical field of low-pressure casting equipment. The device comprises a main frame body with a stand column, and an opening and closing type mechanism and an electrical control system which are arranged on the frame body, and is characterized in that a manipulator mechanism electrically connected with the electrical control system is arranged on the stand column, and a containing and receiving disc is arranged at the tail end of the manipulator mechanism and used for containing and receiving aluminum castings; wherein the receiving disc receives the aluminum casting when located at the first position, and stops acting when located at the second position; a containing box is arranged at the position, between the first position and the second position, of the ground, a shifting rod is fixedly installed on the containing box and used for shifting the aluminum castings from the containing box to the containing box, and the device further comprises a conveying belt for guiding out the aluminum castings in the containing box in batches. The aluminum castings are automatically discharged to the containing box through the combination of the containing box and the deflector rod installed on the containing box, and the function of discharging the aluminum castings in batches in combination with the prior art is achieved.

An aluminum alloy for casting according to the present invention contains 1.0-10.0 mass% of Ni and 8.01-18.0 mass% of Cu, with the remainder comprising Al and unavoidable impurities.　The aluminum alloy for casting according to the present invention further contains 5.0-20.0 mass% of Si.　The aluminum alloy for casting according to the present invention further contains 0.0001-0.1 mass% of P.　The aluminum alloy for casting according to the present invention further contains 0.01-3.0 mass% of Mg.　The aluminum alloy for casting according to the present invention has improved rigidity and tensile strength.

The invention provides a cold plate with a copper embedded structure, which enables a copper plate and an aluminum alloy cold plate which are in contact with a heat source to be reliably assembled without welding, so that the manufacturing cost is reduced. The copper plate is used for being in contact with a heating source for heat conduction; the aluminum casting comprises a bottom plate and a peripheral surrounding plate; a bottom plate of the aluminum casting is provided with a profiling inner groove on the periphery of a copper plate, the profiling inner groove is not a through groove, the bottom plate is further provided with at least one lower convex insertion strip, and the lower convex insertion strip comprises an upper narrow strip and a lower wide strip. A concave profiling cavity is formed in the position, corresponding to the lower convex insertion strip, of the upper surface of the copper plate, and the concave profiling cavity comprises an upper narrow strip cavity and a lower wide strip cavity; the upper narrow strip is embedded in the upper narrow strip cavity, the lower wide strip is embedded in the lower wide strip cavity, and the top face of the profiling inner groove is attached to the upper plane of the copper plate.

The utility model relates to an aluminum casting machining drainage system which comprises a drainage header pipe transversely arranged below a plurality of cleaning water tanks distributed side by side, a drainage port of each cleaning water tank is connected with the drainage header pipe through a drainage branch pipe, and one end of the drainage header pipe is connected with the input end of a water suction pump; the device further comprises a discharged liquid collecting pool, and the discharged liquid collecting pool is connected with the output end of the water suction pump. And a liquid inlet end of the filter is connected with a discharge port of the discharged liquid collection pool. The cleaning device is simple and reasonable in structural design, the liquid drainage header pipe is connected with the multiple cleaning water tanks at the same time, cleaning liquid in the multiple cleaning water tanks is pumped and drained at a time through the water pump, operation is convenient and fast, and working efficiency is improved.

The application discloses a laser cutting device and method for aluminum casting processing, and belongs to the technical field of laser cutting and precision automation support, which comprises a cutting system, a posture calibration system and a collaborative support unit with a force sensor; the calibration system scans the casting and is aligned with a digital twin model; a controller simulates cutting, identifies a critical separation point, calculates the theoretical weight of a separated part, and obtains the minimum stable detection threshold of the force sensor; cutting is paused before the critical point, and a flexible support head performs adaptive support: if the weight is greater than the threshold, the support is performed until the force value reaches the threshold; if the weight is less than the threshold, the support is performed until the force signal first jumps; after the support is completed, the critical point is cut, and the support unit is used to grab the part. The independent fixed collaborative support base is adopted, mechanical vibration generated by a five-axis motion gantry during high-speed movement is blocked from being transmitted to the collaborative support unit, and the support precision and stability are effectively improved.

A molten metal laundering system includes a pump that draws molten metal from a reservoir. A heated raceway receives the molten metal from the pump and carries a flow of the molten metal. A conduit extends from the heated raceway and is exposed exterior the heated raceway. The conduit carries the flow. A temperature sensor senses a temperature of the molten metal in the conduit. An outlet at an end of the conduit directs the flow from the conduit into a casting mold. A flow meter is disposed along the conduit with the conduit extending through the flow meter. The flow meter senses a flow rate of the flow of the molten metal in the conduit. A control module adjusts operation of the pump based at least on the flow rate sensed by the flow meter and the temperature sensed by the temperature sensor.

The invention relates to a method for joining a first component (2) to a second component (3), wherein the first component (2) is provided, which has a base body (4) designed as an aluminum casting component and provided with a layer (5) produced by a thermal spraying process. The second component (3) is provided, which is designed as a steel component. To join the first component (2) to the second component (3), the second component (3) is attached to the layer (5) by a resistance welding process. The second component (3) is welded to the layer (5) in at least one joining zone (6) using an electric current, and thereby attached to the layer, wherein the current intensity of the electric current is in the range of 6.4 kiloamperes up to and including 9.2 kiloamperes.

This invention provides a purification and degassing device for a continuous aluminum melting furnace that effectively solves the problem of high defect rates in manufactured aluminum castings due to the generation of substances such as bubbles, slag holes, and impurities in the molten aluminum during conventional aluminum melting. [Solution] The purification and degassing device for a continuous aluminum melting furnace according to the present invention is provided with a furnace body 1. The furnace body 1 is provided with a melting area 10 where a melting heater 2 is provided, a heat retention area 11 where a heat retention heater 3 is provided, and a molten metal removal area 12. A plurality of gas diffusers 4 are provided at the bottom 13 of the furnace body in the heat retention area 11, and each of the gas diffusers 4 is provided with an air supply pipe 40 connected to an inert gas conveying device.

The invention relates to an automatic exposure method for internal imaging of an aluminum casting hole in an industrial quality inspection scene in the technical field of industrial imaging. The automatic exposure method comprises the following steps: determining the maximum exposure time corresponding to an image average gray value meeting a detection requirement; determining an exposure time sampling interval; and performing interpolation polynomial fitting according to the maximum exposure time and the exposure time sampling interval. Compared with a conventional mode of determining exposure time in industrial AOI quality inspection, the method can save a lot of manpower work; the detection step length and the exposure time are decoupled, so that the method is more flexible; the method can adapt to the influence of the inner wall roughness and the bottom roughness caused by the abrasion of a machining tool on imaging to a certain extent.

Various implementations described herein are directed to a formwork system. In one implementation. the formwork system includes aluminum extrusions and aluminum castings. The aluminum castings and the aluminum extrusions can be assembled by being pressed and riveted together.

The invention discloses an aluminum liquid flow control and stabilization system, which relates to the technical field of casting of aluminum castings and comprises an aluminum liquid sealing tank, a Venturi tube, an electromagnetic coil and a control center, an alternating magnetic field is generated at the venturi tube through the electromagnetic coil, molten aluminum is driven to flow along the spiral flow channel, and the control center adjusts the flowing speed of the molten aluminum in the spiral flow channel by controlling the frequency of the variable-frequency power source. The spiral flow channel is used for assisting molten aluminum in forming eddy current and can restrain molten aluminum turbulence and improve molten aluminum flow stability and flow speed control precision, the response speed of the electromagnetic coil is smaller than 10 ms, quick response can be achieved, the frequency of the variable-frequency power source can be set at will according to casting requirements, and the molten aluminum flow speed control precision is high. In addition, the electromagnetic coil does not make direct contact with the molten aluminum, molten aluminum adhesion can be avoided, and the molten aluminum flow speed control precision is further improved.

The invention relates to the technical field of water heaters, in particular to a cast aluminum heating body structure and a water heater, the cast aluminum heating body structure comprises an electric heating assembly, a spiral water pipe and an aluminum casting; the two ends of the spiral water pipe are fixedly connected with a water outlet pipe and a water inlet pipe respectively, and the spiral water pipe extends spirally and surrounds the surface of the electric heating assembly. The spiral water pipe is formed by alternately connecting a plurality of straight pipe sections and bent pipe sections, and the two ends of each bent pipe section are fixedly connected with the ends of every two adjacent straight pipe sections respectively. The straight pipe section comprises a plurality of convex parts and concave parts, the convex parts and the concave parts are alternately and continuously arranged in the circumferential direction of the straight pipe section to form an insection structure, the convex parts and the concave parts are each of a strip-shaped structure, and the strip-shaped structures extend from the starting end of the straight pipe section to the tail end of the straight pipe section; the problems that in an existing water heater, a cast aluminum heating body is poor in heat exchange efficiency and low in heating speed are solved.

The invention discloses an automobile part milling device with an automatic positioning and clamping structure, and belongs to the technical field of aluminum casting milling, the automobile part milling device comprises a workbench, a connecting seat is arranged on the workbench, a mounting table is arranged on the connecting seat, a plurality of positioning assemblies are arranged on the mounting table, and L-shaped parts are positioned on the positioning assemblies; and the plurality of milling pieces are movably connected to the linear module, and the linear module is connected to the mounting plate. The method solves the problems that in the two-end milling machining process of the L-shaped automobile part, due to the unique geometric structure, in the two-end milling machining process of the L-shaped automobile part, a step-by-step positioning strategy needs to be adopted in a traditional machining mode, positioning reference adjustment, clamping force calibration and program reset are involved in each clamping, and the single-piece machining time is obviously increased; and during single-head positioning, the other end of the part is in a suspended state, so that the vibration coupling effect is easily generated in the machining process, and the machining quality is influenced.

The present invention provides an aluminium based alloy consisting essentially of a weight percentage composition of: silicon: 1.5 to 2.5 % magnesium: 0.1 to 0.6 % titanium: 0.06 to 0.4 % manganese: <0.6 % iron: <0.6 % chromium: <0.01 % nickel: <0.01 % vanadium: <0.02 % copper: <0.05 % zinc: <0.05 % strontium: < 0.03 % beryllium : < 0.0005 % tin: < 0.01 % boron: < 0.10 % other elements (each) : less than 0.10 % each other elements: less than 0.20 % in total, and a balance of aluminium and other unavoidable impurities.