146 results about "Magnalium" patented technology

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 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 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.

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 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 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 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.

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 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 magnesium-aluminum alloy two-way alternate casting forming method. The method comprises the steps that S1, alloy smelting and component regulation and control are conducted; s2, alternately setting casting parameters and casting for the first time; s3, alternate casting and interface control; s4, solidifying, cooling and demolding the casting; molten liquid components are monitored in real time through a spectrum analyzer in combination with a specific component detection function, and it is ensured that magnesium and aluminum alloy molten liquid components meet design requirements; the interface temperature is accurately controlled between two layers of alloy liquidus through temperature control, and good metallurgical bonding between magnesium-aluminum alloy layers is achieved; according to the solidification characteristics of the two alloys, a cooling speed function is set, internal stress concentration is effectively inhibited, and the occurrence rate of cracks, shrinkage cavities and other defects is reduced; by means of the function model of the total argon injection amount and the injection rate, the argon consumption and the argon injection rate are accurately calculated and controlled, hydrogen and inclusions in molten liquid are efficiently removed, argon waste is avoided, and the purity and the production economy are both considered.

The application relates to a commercial vehicle mixed material instrument beam and a manufacturing method thereof, wherein an aluminum alloy pipe beam cross section is polygonal; a steering column support and a main driver side front wall and a steering column integrated support support are formed by magnesium-aluminum alloy pressure casting, and are connected with the aluminum alloy pipe beam through FDS screws; a plastic support assembly is segmented injection molded, each segment comprises a support body and a plastic connecting ring connected with each other; an inner wall of the plastic connecting ring is provided with a cladding connecting surface for the outer surface of the aluminum alloy pipe beam; and the plastic connecting ring and the aluminum alloy pipe beam are pull-riveted. The above structure realizes that the stamping and welding process can be replaced by the FDS and pull-riveting processes, the production cost and steps are reduced; the plastic connecting ring increases the connecting area, directly contacts the aluminum alloy pipe beam through an opening during connection, and is riveted; the connecting strength is strengthened while installation and positioning are facilitated; the injection molding is performed in a segmented mode, the mold scale is reduced, and the injection molding process and cost are simplified.

The utility model discloses an automatic batching system for ladle magnalium castable, and relates to the technical field of ladle magnalium pouring, an anti-blocking rod is arranged on the upper surface of a first material box and the upper surface of a second material box in a penetrating manner, and the upper end of the anti-blocking rod is connected with a lifting plate; mounting plates are mounted on the front surface of the supporting plate and located below the first material box and the second material box, weighing weighers are arranged on the upper surfaces of the mounting plates, a discharging box is mounted on the upper surfaces of the weighing weighers, a first discharging seat is arranged in the discharging box, and a baffle is slidably mounted on one side of the discharging box. Through the arrangement of the mounting plate, the weighing weighbridge, the discharging box, a baffle, a guide block, an electric telescopic rod and a first discharging seat, discharging of the first material box and discharging of the second material box can be accurately weighed through the discharging box, and meanwhile the baffle can ascend and descend through work of the electric telescopic rod; and therefore, the purpose of automatically discharging the weighed different raw materials can be achieved, and the practicability is better.

This invention belongs to the field of thermal energy equipment technology, specifically a control method and system for a high-efficiency vacuum hot water boiler made of silicon-magnesium-aluminum alloy. The method integrates control parameters from the combustion status feedback signal output by the fully premixed furnace-free combustion control module, the heat exchange efficiency feedback signal output by the high-efficiency heat exchange regulation module of the silicon-magnesium-aluminum alloy, and the real-time vacuum monitoring data output by the vacuum negative pressure stabilization control module to form control commands, which are then transmitted. Simultaneously, the method performs parameter self-learning optimization and fault self-diagnosis based on the monitoring data. Based on this, the invention possesses fully intelligent functions for remote monitoring, remote operation, fault early warning, parameter self-adaptation, and remote operation and maintenance scheduling. It eliminates the need for 24-hour on-site maintenance personnel, significantly reducing manpower input, lowering operation and maintenance costs, and improving operation and maintenance efficiency.

The application provides a method for inhibiting arc welding porosity of medium-thick plate high-magnesium aluminum alloy, mainly comprising the following steps: taking two high-magnesium aluminum alloy plates and performing beveling processing on the plates; placing the two high-magnesium aluminum alloy plates in butt joint on a workbench and fixing the plates by using a welding clamp; selecting arc welding equipment based on double-wire synergic co-molten pool, assembling two different component welding wires of Al-Mg series and Al-Si series, and adjusting the distance, inclination angle, welding voltage, welding current and wire feeding speed between the double wires; and completing the welding of the high-magnesium aluminum alloy under the protection of inert gas according to the process parameters in the previous step. The Al-Mg-Si ternary alloy system is generated in-situ in the welding molten pool through the co-molten pool of different welding wires, the strength advantage of the Al-Mg series welding wire and the excellent fluidity of the Al-Si series welding wire are considered, the good escape condition is provided for the bubbles in the molten pool while the joint strength is ensured, the porosity defects in the weld are effectively inhibited, and the strength and elongation of the welded joint are improved.

The invention provides a high-strength high-toughness corrosion-resistant Al-Mg alloy material and a preparation method, the alloy material comprises a core layer and an edge layer, the edge layer is a pure aluminum layer, and the core layer is a high-magnesium aluminum alloy ingot; and the aluminum alloy material is obtained after three-stage homogenization treatment and rolling. The alloy material has high strength and excellent corrosion resistance, the intergranular corrosion weight loss is smaller than or equal to 3 mg / cm < 2 >, and the exfoliation corrosion rating is PB.

The utility model provides a large-size light-weight high-strength narrow-frame display screen structure which comprises a back shell, the back shell is made of magnesium aluminum alloy, an open groove is formed in the inner wall of the back shell, an LED lamp strip, a light guide plate, a membrane material assembly and a middle iron frame are sequentially arranged in the back shell, the edge of the membrane material assembly is arranged right opposite to the open groove, and the middle iron frame is arranged in the open groove. The membrane material assembly is pressed and fixed through the Z-shaped middle iron frame, and the edge of the middle iron frame is upwards buckled and pressed on the back shell. According to the invention, the back shell made of the magnesium-aluminum alloy is adopted, the weight is reduced, the passive heat dissipation effect is improved, the open grooves for accommodating the size change of the membrane material assembly prevent the membrane material from being extruded during high-temperature expansion, the internal assemblies are reduced, the safety gap between the assemblies is reduced, and the width of printing ink needing to be shielded by the glass cover plate is reduced; and the black edge of the display screen assembly is narrowed.

The utility model provides a vehicle part magnalium alloy mould, including lower mould, upper mould and forming cavity, said upper mould is located the top of lower mould, said forming cavity is opened in the top of lower mould, the inside of lower mould is provided with transmission groove, the inside of transmission groove is provided with ejection plate, the top of ejection plate is fixedly connected with the ejection rod, the ejection rod is connected with the top of ejection plate. The top of the ejector rod penetrates into the forming cavity. And the transmission mechanism is fixedly arranged on one side of the lower die. The utility model relates to the technical field of vehicle part machining. By arranging the transmission mechanism, the ejection rod can intermittently eject the formed vehicle part out, damage is avoided, meanwhile, when the ejection rod makes contact with the vehicle part, the ejection plate can move downwards under the influence of pressure, meanwhile, the buffer rod and the buffer block are driven to move downwards, the buffer block can extrude the spring, and through the counter-acting force of the spring, the vehicle part is prevented from being damaged. Therefore, the buffering effect is achieved.

The utility model discloses a clamping tool for magnesium aluminum alloy die castings, and relates to the technical field of die casting clamping, the clamping tool comprises a supporting plate and a concave plate, the concave plate is arranged on the top of the supporting plate, a first motor is arranged on one side of the concave plate, a bidirectional screw rod is arranged at the output end of the first motor, and a second motor is arranged on the other side of the concave plate. The two-way lead screw is rotatably connected to the interior of the concave plate, a sliding block is further slidably connected to the interior of the concave plate, threads at the two ends of the two-way lead screw are both in threaded connection to the interior of the sliding block, a first clamping block is fixedly connected to the top of the sliding block, and a second clamping block is slidably connected to the interior of the first clamping block; and an adjusting assembly for adjusting the second clamping block is arranged on the first clamping block. According to the magnesium-aluminum die casting clamping device, the first clamping block and the second clamping block are matched with each other, so that a magnesium-aluminum die casting is clamped, and the effect of adjusting the second clamping block is achieved through the adjusting assembly.

The invention relates to the technical field of electroslag remelting metallurgy, in particular to an electroslag steel production process capable of reducing burning loss of boron alloy elements, slag charge comprises the following components in percentage by mass: 30%-50% of CaF2, 30%-45% of Al2O3, 10%-25% of B2O3, 8%-12% of BaO and 0.5%-1% of BN; before electroslag remelting, the slag charge is baked for 60-100 min at the temperature of 300-400 DEG C, the slag charge is added into an electroslag furnace within 30 min after baking is stopped, the adding amount is controlled to be 0.8-1.2% of the mass of the remelting consumable electrode, the consumable electrode is inserted into the electroslag furnace containing the slag charge, the slag charge is molten to form a slag pool through electrifying heating, the remelting process of the consumable electrode is completed, and in the remelting process, the slag charge is subjected to heat preservation for 20-30 min; magnesium-aluminum alloy powder is continuously added into the electroslag furnace, the adding amount is controlled according to 300 g / h to 500 g / h, and 300 g to 500 g of ferroboron alloy particles are added into the electroslag furnace every 20 min to 30 min. According to the method, the burn-out rate of boron in the consumable electrode is reduced to 10% or below.