194 results about "Magnalium" patented technology

The invention relates to the technical field of magnesium-aluminum alloy heat treatment, and discloses a high-strength and high-conductivity magnesium-aluminum alloy heat treatment method which comprises the following steps: step 1, surface cleaning treatment: carrying out surface cleaning treatment on a magnesium-aluminum alloy workpiece to remove oil stains, impurities and an oxide layer on the surface; secondly, preheating treatment is conducted, specifically, the cleaned magnesium-aluminum alloy workpiece is put into a heating furnace, the temperature is slowly increased to 200 DEG C at the temperature increasing speed of 10 DEG C / min, and heat preservation is conducted for 1-2 hours at the temperature; thirdly, the temperature is rapidly increased to the solid solution temperature, and after preheating treatment is completed. Precipitated phase distribution is optimized through two-stage aging treatment, a precipitated phase is preliminarily formed through low-temperature short-time aging, then the precipitated phase is uniformly grown through high-temperature long-time aging, local aggregation is avoided, meanwhile, solution treatment and quenching cooling are optimized, uniform dissolution of solute atoms is ensured, the alloy strength and hardness are improved, and the service life of the alloy is prolonged. And the fatigue resistance and the crack propagation resistance are remarkably improved through uniform precipitated phase distribution.

The invention provides a magnesium-aluminum alloy casting molding cooling device, which relates to the technical field of casting process equipment, and comprises a cooling pool, a mounting rack fixed on the top of the cooling pool, a chain conveying belt arranged on one side of the mounting rack, a plurality of clamping mechanisms arranged at the bottom of the chain conveying belt in a transmission manner, and a cold air mechanism arranged on the cooling pool, a water circulation frame is arranged on the side, away from the cold air mechanism, of the top of the cooling pond. When a limiting block slides to the end part of the inner wall of a concentric-square-shaped limiting frame, a second bevel gear is meshed and matched with a first bevel gear, a third bevel gear is meshed and matched with a fourth bevel gear, and a started chain conveying belt drives a filtering assembly to move towards one side of a low filtering plate along a threaded rod, so that the whole filtering assembly moves towards the other side of the cooling tank; the difficulty of cleaning metal scraps in the cooling pond is reduced, water impurities in the cooling pond can be concentrated in the filtering assembly, and power output in the impurity collecting process is reduced.

The invention belongs to the field of aluminum alloy casting, and discloses a heat-treatment-free high-toughness die-casting aluminum alloy and a preparation method thereof. According to the total weight of the aluminum alloy, the aluminum alloy comprises the following components in percentage by weight: 4.0 to 6.5 percent of Mg, 1.8 to 3.0 percent of Si, 0.5 to 1.0 percent of Mn, 0 to 0.2 percent of Zr, 0 to 0.3 percent of Cr, 0.1 to 0.3 percent of Ti, 0 to 0.3 percent of Fe, 0 to 0.5 percent of alterant, less than 0.1 percent of impurity element and the balance of Al. The magnesium-rich aluminum alloy with better plasticity is obtained by controlling the ratio of Mg to Si in the aluminum alloy, then the plasticity of the alloy is further improved by applying the alterant, aging is carried out immediately by utilizing waste heat of the casting after die casting is completed, the strength of the alloy is improved through precipitation of a dispersion strengthening phase in the aging process, and the high-strength and high-toughness aluminum alloy die casting is obtained.

The invention discloses a high-silicon high-magnesium aluminum alloy and a preparation method thereof, relates to the field of nonferrous metal materials and processing thereof, and effectively improves the microstructure of the alloy by utilizing the interaction among alloy elements and adding a composite alterant. The heat-treatment-free high-silicon and high-magnesium aluminum alloy which is more excellent in performance, different from existing traditional Al-Mg series (high-magnesium and low-silicon) and Al-Si series (high-silicon and low-magnesium) aluminum alloys and suitable for die casting is prepared. Compared with the prior art, the alloy has good casting performance and good obdurability at the same time, the requirement for aluminum alloy performance in the automobile lightweight field can be met, and production of large complex thin-wall integrated die-casting aluminum alloy castings can be achieved.

The invention relates to the technical field of magnesium-aluminum alloy casting, and discloses a magnesium-aluminum alloy high-pressure casting rapid cooling and defect inhibition process which comprises the following steps: S1, mold preheating; s2, nitrogen replacement is conducted; S3, a release agent is sprayed to the interior of the cavity under the inert atmosphere; s4, magnesium-aluminum alloy molten metal with the temperature ranging from 650 DEG C to 700 DEG C is pressed into the cavity at the injection specific pressure ranging from 80 MPa to 120 MPa and the mold filling speed ranging from 5 m / s to 8 m / s; s5, a subarea cooling structure is designed based on the wall thickness difference of different areas of the casting, gradient cooling is conducted on the casting, in the cooling process, the hot train risk is judged by calculating a thermal stress value, and cooling medium parameters are regulated and controlled by calculating a cooling rate value; and S6, the casting is taken out. Traditional cooling is changed into a partition gradient type, defects are controlled according to a formula and AI, double-pipeline nitrogen is used for preventing oxidation, cost is reduced, and technical practicability and innovation are improved.

The invention discloses a magnesium and aluminum alloy extrusion casting forming process, and belongs to the technical field of metal material forming. According to the technical scheme that injection and mold locking are carried out synchronously, the method is characterized in that 1, after molten metal is injected into a charging barrel, mold filling injection is directly started, mold filling and mold locking are started at the same time, and mold filling and mold locking force is achieved before mold filling is completely finished; after mold filling is completed, extrusion and injection are started, the mold clamping force and the injection force of extrusion are synchronously increased, the extrusion force and the mold clamping force are offset, and the stress of the mold is greatly reduced. Inclined wedge mechanisms are adopted for extrusion pressurization and mold locking, and independent linear control over extrusion force and mold locking force is achieved. The problems of large stress and short service life of the mold caused by nonlinearity of the mold clamping force in the traditional process are effectively solved, and the method has the advantages that the mold clamping force is linearly controllable, the process stability is high and the service life of the mold is long.

The utility model discloses a magnesium-aluminum alloy hardness detection device, which relates to the technical field of hardness detection equipment, and comprises a restraining mechanism, a base plate and a placing table fixedly arranged on the upper wall of the base plate, and a magnesium-aluminum alloy block is placed on the upper wall of the placing table; and the detection mechanism comprises frame rods fixedly arranged on the upper wall of the mounting plate, and a hydraulic cylinder is fixedly connected between the two frame rods. According to the magnesium-aluminum alloy hardness detection device disclosed by the utility model, in a testing process, a worker firstly places a magnesium-aluminum alloy block on the placement table and then drives the hydraulic cylinder to further drive the lower pressing plate to press downwards, at the moment, the two wedge-shaped blocks press downwards, and the end parts of the wedge-shaped blocks are obliquely cut and further interact with the clamping blocks, so that the hardness of the magnesium-aluminum alloy block is detected. The characteristic that the sliding rod is arranged in the sliding groove opening in a sliding mode is utilized, then the two clamping blocks are driven to move relatively to clamp and fix the magnesium-aluminum alloy, pressing testing and clamping are integrated, and operation is convenient and fast.

The invention is suitable for the technical field of die-casting dies, and provides a magnesium-aluminum alloy die-casting die for vehicle part machining, which comprises a die-casting assembly, an ejection assembly is slidably arranged on the die-casting assembly, and the die-casting assembly comprises a die part and a lifting part slidably matched on the die part; the magnesium-aluminum alloy die-casting die comprises a die part and an ejection assembly, the ejection assembly comprises an ejection part and a displacement part, the ejection part is in sliding fit with the die part, the displacement part is in rotating fit with the ejection part, and the displacement part is in sliding fit with the die part. The technical problem that the vehicle part subjected to casting and cooling forming is damaged due to the fact that the vehicle part subjected to casting and cooling forming is subjected to slope leaning and supporting when being directly separated from a mold is solved.

A portable information handling system housing portion is manufactured by a process that injects a magnesium aluminum alloy (Mg—Al) from a hot runner having plural outtakes into a mold having a spree at each of the plural outlets. In one example embodiment a housing lid portion is injection molded at a midpoint on opposing sides of a longest side of a rectangular shape. In another example embodiment a housing cover portion is inject molded from six sprues placed around a perimeter of a keyboard location having openings through which keys of the keyboard extend.

The utility model provides a magnesium-aluminum alloy die for an automobile plate. The magnesium-aluminum alloy die comprises an upper die frame, a lower die frame, a die core and a forming cavity, the utility model relates to the technical field of dies. By arranging the positioning mechanism, a screwing block can be rotated to drive a driving rod and a transmission disc to rotate around a bearing, when the transmission disc rotates, a transmission rod can be driven to rotate, the surface of the transmission rod extrudes the interior of a transmission groove, and two movable blocks can move towards the side close to a spring along tracks of sliding blocks and sliding grooves; during installation, the mold core is installed on the top of the lower mold frame by aligning the positions of the shell and the butt joint groove, the shell enters the butt joint groove, then the screwing block is loosened, elastic force generated by the spring can push the movable block and the positioning rod to move towards the side away from the spring, and then the mold core can be taken down. And the positioning rods enter the corresponding positioning grooves, so that the mold core is mounted, and the effect of facilitating replacement is achieved.

The invention relates to the technical field of wire drawing machines, in particular to a magnesium-aluminum alloy wire drawing machine take-up mechanism and a method thereof.The magnesium-aluminum alloy wire drawing machine take-up mechanism comprises a base, two sets of first fixing plates are fixedly installed at one end of the base, and two sets of second fixing plates are fixedly installed at the other end of the base; a lead screw driving assembly is arranged between the two sets of second fixing plates, a threading block is fixed to a moving block of the lead screw driving assembly, one set of first fixing plates are connected with the base through positioning bolts, and a motor support is fixedly installed on the side, corresponding to the first fixing plates, of the base. And meanwhile, the pressing plate gradually moves downwards around the fixing rod along with winding of the alloy wire, the arc-shaped rod is driven to move downwards to extrude the telescopic spring, at the moment, the telescopic spring provides opposite force, the pressing plate abuts against the alloy wire all the time, the alloy wire is pressed tightly, and therefore the alloy wire cannot be loosened when wound on the take-up roller.

The present invention discloses a die for uniformly extruding a magnesium alloy profile, which includes a punch assembly installed below the upper template of a press and a die assembly installed above the lower template of the press; the punch assembly is formed with a punch body protruding downward; the die assembly forms a material receiving cavity with an open top directly below the punch body. The material receiving cavity is for placing a blank and for the punch body to insert downward. The bottom of the material receiving cavity forms an extrusion surface, and the extrusion surface conducts downward to form a main cavity and a plurality of fin-shaped cavities connected around the main cavity. The main cavity and the plurality of fin-shaped cavities together form a contour corresponding to the workpiece. The extrusion surface is respectively concave downward between every two adjacent fin-shaped cavities to form a current-limiting groove. Each current-limiting groove forms a first groove surface near the main cavity to limit the flow of the blank to the main cavity and a second groove surface near the fin-shaped cavity to limit the flow of the blank to the fin-shaped cavity. The present invention enables the blank to uniformly flow to the main cavity and the fin-shaped cavities during the extrusion forming process.

A novel environment-friendly building facade construction method comprises the steps that a modular prefabricated outer vertical panel is provided, the prefabricated outer vertical panel is made of a recyclable composite material, the composite material comprises, by weight, 60%-70% of regenerated cellulose, 20%-30% of environment-friendly resin and 5%-10% of a nano reinforcing agent, and a porous micro-nano structure is preset on the surface of the prefabricated outer vertical panel; the surface self-cleaning performance is enhanced; a light alloy frame is installed on the base face of the building outer wall, the light alloy frame is made of magnesium-aluminum alloy materials and fixed to the base face of the building outer wall through embedded expansion bolts, and the surface of the frame is coated with an environment-friendly anti-corrosion coating. According to the intelligent mechanical arm system, the multi-axis mechanical arm, the laser positioning module and the pressure sensor are integrated, the laser positioning module calibrates the installation position of a panel in real time through 532-nanometer green laser, it is guaranteed that the installation error is smaller than 0.5 mm in combination with precise control over 50-200-Newton contact force through the pressure sensor, and the construction precision is improved.

The application discloses a preparation method of modified high-strength magnesium-aluminum alloy wire, which comprises the following steps: weighing the following raw materials with the following weight percentages: Mg 3-5%, Cr 0.1-0.2%, Si 0.1-0.2%, Mn 0.1-0.15%, Y 0.02-0.05%, Gd 0.02-0.04%, and the rest is Al. The high-strength magnesium-aluminum alloy wire is made of Mg, Cr, Si, Mn, Y, Gd and Al raw materials as the matrix raw material of the wire, the raw materials are mutually matched and mutually enhanced, the overall performance of the matrix is improved, and then the oscillation modification treatment and the heat cycle improvement treatment are carried out, the strength performance and the elongation performance of the product are improved through the mutual coordination of the two, and the high-temperature stability performance of the product is obviously improved.

The application discloses a magnesium-aluminum alloy shell precision polishing device and relates to the technical field of metal processing.The magnesium-aluminum alloy shell precision polishing device comprises a servo motor and a grinding wheel, the output end of the servo motor is connected with a swing mechanism, the swing mechanism comprises a fixed seat and a swing seat, and the side wall centers of the fixed seat and the swing seat are both rotationally connected with transmission shafts.The knob is rotated to drive the half gears to rotate, the half gears are driven to rotate in opposite directions after being actuated, one of the half gears drives the swing seat to rotate, the swing seat drives the transmission shafts to adjust the axial positions, the U-shaped seat is swung, the worm always keeps the same axis as the transmission shafts on the swing seat, the worm is swung along with the swing of the transmission shafts to adjust the position of the grinding wheel, the grinding wheel is swung along the track of the arc, the arc surface of the grinding wheel is swung to polish, the fit degree during the polishing of the alloy shell surface is improved, and thus the polishing smoothness of the arc surface shell is improved.

The utility model discloses an improved vibration sounding structure of a loudspeaker, which comprises a supporting part and a body, the body is upwards bulged in an arc shape relative to the horizontal plane, and the supporting part extends outwards around the outer edge of the body; and the carcass is formed by connecting a plurality of polygonal sections. According to the improved vibration sounding structure of the loudspeaker, the magnesium aluminum alloy is integrally formed, and the magnesium aluminum alloy is relatively large in mass and density, so that compared with a traditional plastic diaphragm, the improved vibration sounding structure of the loudspeaker is higher in rigidity and more stable in tone quality; in addition, the improved vibration sounding structure of the loudspeaker made of the magnesium-aluminum alloy is very good in high-frequency performance and resolution.

The invention discloses a rotary injection passivation Mg-Al alloy powder desulfurization method, and belongs to the technical field of metallurgy. In order to solve the problems of low desulfurization rate, low magnesium utilization rate and the like in the prior art, the invention provides a rotary injection passivation Mg-Al alloy powder desulfurization method, which comprises the following steps: adding calcium carbonate into molten aluminum to obtain aluminum coated calcium carbonate; the magnesium-aluminum alloy powder is dispersed in an organic solvent, a passivating agent is added, and passivated magnesium-aluminum alloy powder is obtained; and inserting the rotary spray gun into a ladle, firstly spraying the passivated active lime, then adding the aluminum-coated calcium carbonate particles, and then spraying the passivated magnesium-aluminum alloy powder to finish desulfurization. According to the method, calcium carbonate is wrapped with aluminum, the desulfurization effect is improved, in-situ desulfurization thermodynamic conditions are created through magnesium-aluminum alloy powder, the magnesium vapor pressure is reduced, the retention time of magnesium vapor in molten iron is prolonged, the sulfur content of the molten iron is reduced, the magnesium utilization rate is improved, the material adding conditions are controlled, the desulfurization effect is fully exerted, and the desulfurization effect is remarkably improved through rotary injection.

The utility model belongs to the field of pump sleeves, particularly relates to a polishing-free magnesium-aluminum alloy pump sleeve, and aims to solve the problems that a user needs to take down a protective cover firstly when using a cosmetic bottle pump head every time, the step brings inconvenience to the user, use steps are increased, and the protective cover cannot be taken down easily in the use process of taking down the protective cover. In order to solve the problems of physical damage and shortening of the service life of the pump head due to the fact that the pump head is easy to fall and collide accidentally, the utility model provides the following scheme that the pump head comprises a pump head body and a protection mechanism in the process of operating the pump head body, and the protection mechanism is arranged outside the pump head body and used for wrapping and protecting the pump head body. When the cosmetic bottle pump head is used, the effects of protecting the pump head body and conveniently using the pump head body are achieved, the situation that the cover body needs to be taken down firstly when the cosmetic bottle pump head is used every time is avoided, and meanwhile in the using process, the situation that the pump head body is prone to accidentally falling off and colliding, and the service life of the pump head is shortened can be avoided.

The invention provides a preparation method of titanium mine fireworks and the titanium mine fireworks. The preparation method of the titanium mine fireworks comprises the following steps: carrying out ball milling on lepidolite lithium extraction tailings until the particle size is less than or equal to 20 microns to obtain a tailing powder material; the tailing powder is immersed in a lithium nitrate solution for lithium enrichment treatment, and filter residues are filtered and collected; drying the filter residues to obtain lithium-enriched tailing powder; and under the protection of inert gas, 30-50 parts of lithium-enriched tailing powder, 25-35 parts of potassium nitrate, 15-25 parts of titanium powder or magnesium-aluminum alloy powder, 5-10 parts of nano iron oxide and 2-4 parts of hydroxypropyl methyl cellulose are mixed, and the titanium mine firework medicament is obtained. In the application, the lepidolite lithium extraction tailings replace part of titanium powder and sulfur, so that the emission of heavy metals and sulfur oxides is reduced, the pollution to the environment is reduced, and the environmental protection requirement is met. Silicon dioxide and aluminum oxide in the tailings are used as inert fillers to be doped into the fireworks, so that the consumption of raw materials is reduced, the sensitivity of the medicament is reduced, and the safety is enhanced.

The invention relates to the field of working fluids, in particular to an environment-friendly magnesium alloy working fluid and a preparation method thereof.The magnesium alloy working fluid comprises, by weight, 5-10 parts of base oil, 5-15 parts of an antirust agent, 0.1-2 parts of a corrosion inhibitor, 10-20 parts of an emulsifier, 0.05-0.2 part of a defoaming agent, 2-4 parts of a wetting agent, 1-2 parts of a pH regulator and 15-30 parts of deionized water; the antirust agent is a product prepared by taking 3-aminotrifluorotoluene and ethylene glycol diglycidyl ether as reactants and carrying out ring-opening reaction. According to the magnesium alloy working fluid prepared by the invention, green and environment-friendly plant-based synthetic ester is adopted as base oil, so that the whole chain from raw materials to discharge is environment-friendly, and the environmental pollution is reduced. The processing liquid has excellent performance in processing of magnesium alloy material parts, can effectively prevent oxidation discoloration of sensitive magnesium alloy and magnesium-aluminum alloy and inhibit dissolution of magnesium ions, and has excellent lubricating property and flame retardant property.

The utility model relates to the technical field of magnesium aluminum alloy processing, in particular to a cold bending device for magnesium aluminum alloy processing, which comprises a machine body and a protective device, a cold bending roller is arranged on the inner wall of the machine body, a first air cylinder is mounted on one side of the machine body, the output end of the first air cylinder is fixedly connected with the surface of the cold bending roller, and two limiting wheel sets are mounted on the surface of the machine body. The protection device is arranged on the surface of the machine body and comprises a transparent cover, the transparent cover is located above the machine body, the surfaces of the two sides of the machine body are fixedly connected with second air cylinders respectively, the output ends of the second air cylinders are fixedly connected with the surface of the machine body, and through holes are formed in the two sides of the transparent cover respectively. According to the magnesium-aluminum alloy cold bending device, splash generated by magnesium-aluminum alloy can be intercepted and blocked in the cold bending process, meanwhile, the bending degree of the magnesium-aluminum alloy can be limited, the phenomenon that the magnesium-aluminum alloy is excessively bent, so that the magnesium-aluminum alloy is prone to breakage or the bending accuracy is affected is reduced, and the overall usability of the device is improved.

The invention provides a continuous cast rolling method of 6061D high-silicon magnesium aluminum alloy, which comprises the following steps: preparing aluminum alloy raw materials in percentage by mass: 0.6-0.8% of Si, 1.0-1.2% of Mg, 0.5-0.7% of Fe, 0.2-0.4% of Cu, less than 0.14% of Mn, less than 0.22% of Zn, less than 0.14% of Ti, less than 0.14% of Cr, less than 0.15% of single other impurities, less than 0.15% of the sum of other impurities, and the balance of Al and other inevitable impurities; 2, the aluminum alloy raw materials prepared in the step 1 are subjected to continuous cast rolling at the temperature of 690-715 DEG C, the rolling force of continuous cast rolling is 15000-24000 kN, and the speed of continuous cast rolling is 0.5-1.0 m / min; and the aluminum alloy raw material obtained after continuous cast rolling is quenched at the flow rate of 100-160 l / s, and the water temperature is 16-60 DEG C. On the other hand, the invention provides cast rolling equipment which comprises a batching device; a smelting furnace; a cast rolling unit; provided is a rapid cooling device. Through the special components of the raw materials and the manufacturing process, the balance between the conductivity and the mechanical property is considered, and the crystallization time is short and the crack edge is small in the casting and rolling process.

The utility model discloses a coating spraying device for magnesium aluminum alloy, and relates to the technical field of magnesium aluminum alloy processing, the coating spraying device comprises a workbench and a support plate arranged on one side of the workbench, the surface of the support plate is provided with a groove, a screw rod is rotatably arranged in the groove, the outer side of the screw rod is in threaded connection with a lifting plate, and the lifting plate is in threaded connection with the workbench. The lifting plate is connected with the supporting plate in a sliding mode, the spraying mechanism is arranged above the workbench and used for conducting spraying operation on the magnesium-aluminum alloy, and the adjusting mechanism is arranged below the spraying mechanism and used for conducting fixing and limiting operation on the magnesium-aluminum alloy. The spraying mechanism is arranged, the positions of the spraying head and the spraying pipe are convenient to adjust, the contact area between the spraying head and the spraying pipe is increased, the spraying efficiency is improved, the adjusting mechanism is arranged, the distance between the sliding plate and the fixing plate and the distance between the clamping blocks are convenient to adjust, the magnalium can be conveniently and rapidly rotated to the reverse side, manual operation is not needed, and the spraying efficiency is improved. And the working degree of a user is greatly reduced.

The invention relates to the technical field of metal semi-solid die-casting forming processes, in particular to a magnesium-aluminum alloy forming process. A magnesium-aluminum alloy forming technology comprises the following steps that magnesium-aluminum alloy smelting is conducted, specifically, magnesium-aluminum alloy powder is transferred into a smelting furnace to be melted, inert gas injection is continuously conducted on melt in the smelting process, standing is conducted for 10-16 min after smelting is completed, and dross is skimmed; semi-solid slurry is prepared, specifically, the magnesium-aluminum alloy solution is transferred into a crucible, and then the magnesium-aluminum alloy solution is cooled and stirred; and injection molding: carrying out injection molding on the semi-solid slurry through an alloy injection molding machine, and cooling to obtain the magnesium-aluminum alloy casting. According to the magnesium-aluminum alloy forming process, the yield of prepared magnesium-aluminum alloy castings is higher, and the surface quality is better.

The application discloses a magnesium-aluminum alloy semi-solid injection forming motor shell polishing device and method, and belongs to the technical field of metal surface polishing. The application aims to solve the problem that the existing polishing device is difficult to flexibly and uniformly polish the irregular outer contour of a motor shell. The device comprises a clamping mechanism for clamping the motor shell, a transverse feeding bearing mechanism arranged on one side of the clamping mechanism, a belt polishing transmission adjusting mechanism installed on the transverse feeding bearing mechanism, and a conformal supporting mechanism installed on the transverse feeding bearing mechanism and located in the inner side of the polishing belt. The belt polishing transmission adjusting mechanism has a polishing belt and a power element for driving the polishing belt to move along a circular path. The conformal supporting mechanism is used to realize the flexible conformal adhesion of the polishing belt to the complex outer contour of the motor shell, and the loosening and tension adjustment of the polishing belt is matched, so that the polishing uniformity and surface quality are effectively improved, and the phenomena of missed polishing and over-polishing are reduced.

The utility model discloses a magnesium aluminum alloy top cover casting compressive strength detection device which comprises a base plate, supporting plates are installed at the top of the base plate at equal intervals, a groove is formed in the center of the top of the base plate, clamping mechanisms are installed in the groove at equal intervals, and each clamping mechanism comprises a rotating rod rotationally installed in the groove. Baffle mechanisms are arranged at the top of the base plate at equal intervals, a supporting base is installed at the top of the base plate, and detection mechanisms are installed at the top of the supporting base at equal intervals. According to the top cover clamping device, the rotating rod is controlled to rotate, so that the two threaded seats are controlled to move towards each other or away from each other through the two-way threads, a top cover placed at the top of the supporting plate can be clamped and fixed, the top cover tends to the center of the supporting plate in the clamping process, and top cover castings with the same width can be clamped at the same time; multiple groups of top cover castings can be conveniently subjected to compression resistance detection at the same time subsequently, and the detection efficiency is improved.

This invention provides a surface treatment device for the inner cavity of magnesium-aluminum alloy products, including a tank. A servo motor is fixedly connected to the outer wall of the tank. A drive bevel gear is provided at the end of the output shaft of the servo motor. A rotating clamping device includes a rotating disk, two sliding blocks, and a mounting sleeve. The rotating disk is rotatably connected to the tank, and the mounting sleeve is fixedly connected to the center of the bottom surface of the rotating disk. A first bevel gear is fixedly connected to the outer wall of the mounting sleeve, and the first bevel gear meshes with the drive bevel gear. Two self-locking gas springs are installed on the bottom surface of the rotating disk. A flow pipe is rotatably installed at the bottom of the tank, passes through the mounting sleeve, extends above the rotating disk, and has nozzles arranged in an array along the outer periphery of the upper section of the flow pipe. This invention can stably and reliably clamp the workpiece and drive it to rotate, avoiding damage to precision structures caused by traditional rigid clamping. When the workpiece rotates, the flow pipe can rotate synchronously in the opposite direction, and grinding fluid, cleaning agent, and other media are sprayed from the nozzles to form a dynamic flushing coverage, improving spraying efficiency and better eliminating dead corners in the inner cavity surface treatment.

The invention relates to the technical field of current collector surface treatment, and particularly discloses a functional current collector surface modification method which is characterized in that after an aluminum-based film is preheated, magnesium powder is subjected to laser cladding on the surface of the aluminum-based film to form a magnesium-aluminum alloy layer, so that the purpose of modifying the surface of the functional current collector is achieved. The magnesium-aluminum alloy layer subjected to laser cladding is firmly combined with the aluminum-based film, the overall corrosion resistance and oxidation resistance of the material are improved, local modification of specific parts of the surface of the current collector is achieved by accurately controlling laser beams through the laser cladding technology, different requirements of different parts for material performance can be met, and the service life of the current collector is prolonged. And materials and cost can be saved, and production efficiency and economic benefits can be further improved after the device is combined with an automatic production line.

The application relates to the technical field of a metal semi-solid die-casting forming process, in particular to a magnesium-aluminum alloy forming process. The magnesium-aluminum alloy forming process comprises the following steps: magnesium-aluminum alloy smelting: firstly, magnesium-aluminum alloy powder is transferred to a smelting furnace for melting, inert gas blowing is continuously carried out on the molten liquid during the smelting process, the molten liquid is statically placed for 10-16 min after the smelting is completed, and dross is removed; semi-solid slurry preparation: the magnesium-aluminum alloy solution is transferred to a crucible, and then the magnesium-aluminum alloy solution is subjected to cooling and stirring operation; injection forming: the semi-solid slurry is subjected to injection forming through an alloy injection molding machine, and a magnesium-aluminum alloy casting is obtained after cooling. The magnesium-aluminum alloy forming process can promote the magnesium-aluminum alloy casting prepared to have a higher yield and a more excellent surface quality.

The invention discloses a preparation method of a magnesium-aluminum alloy material loaded with a steam hydrotalcite coating on the surface, and belongs to the technical field of magnesium-aluminum alloy surface coating preparation, and the method comprises the following steps: (1) polishing the surface of a magnesium-aluminum alloy; (2) carrying out alkali heat treatment on the polished magnesium-aluminum alloy; and (3) preparing the hydrotalcite coating on the surface of the magnesium-aluminum alloy matrix subjected to alkali heat treatment by adopting an in-situ steam method. According to the prepared magnesium-aluminum alloy material, the hydrotalcite coating loaded on the surface has the characteristics of being compact in structure, good in corrosion resistance, long in service life and the like, so that the material has good corrosion resistance and is particularly suitable for the marine atmospheric environment with high corrosion.