Magnesium alloy shapes application is wide

6mm, and aluminium alloy is 1.

2~1.

5mm. Magnesian crystallization latent heat is smaller than aluminium, caky inside the mould fast, productivity is more aluminous than Die Casting a ％ of tower above 40~50, highest can amount to double, magnesium alloy has quite good cutting to machine function, be opposite when cutting of cutting tool use up very low, cutting power is very little. The power ratio that same part uses up cutting of magnesium alloy, aluminium alloy, cast-iron, low-alloy steel is: 1: 1.

8: 3.

5: 6.

3. Magnesium alloy has taller dimension stability, stable shrinkage, cast and add work measure precision tall, divide magnesium - aluminous - outside zincic alloy, most magnesium alloy is reached in heat treatment process in be being used for a long time as a result of the dimension that change and causes change is close to Yu Ling, comfortable at making model, clamping apparatus and electronic product outer garment. Magnesium alloy makes shape method: Alloy is made shape methodological cent is cast and be out of shape two kinds. Magnesium alloy is made cast figuration to express magnesium alloy to make a casting build figuration to be able to use gravitational and pouring, low Die Casting to build with Die Casting. Appear again in recent years touch change inject shapes new technology. Mature most with the craft of Die Casting and equipment among them, at present domestic and international magnesium alloy makes a great majority use production of Die Casting law. The magnesium alloy of Die Casting Machine of company of Prince Die Casting MachinePrince of United States of Prince Die Casting Machine makes Die Casting shapes: As a result of magnesium alloy solution easy oxidation as a result burns, liability of the hot tearing when casting is bigger than aluminium alloy, because this magnesium alloy is in fused, pouring the respect such as the temperature control that reachs Die Casting fluid wants than aluminium alloy Die Casting complex. Die Casting machine distributes machine of hot cell Die Casting and machine of cold room Die Casting, the manufacturing efficiency of machine of hot cell Die Casting is tall, it is 2 times what be the same as machine of Die Casting of capacity cold room about, force of Dan Jisuo model is commonly under 7840kn, use at quality normally not quite (it is commonly under 2kg) thin wall cast. Application of machine of cold room Die Casting is wider, american Prince company goes a force that lock up a model to amount to at was being produced 1990 13.

The world of 72MN's most advanced large magnesium alloy is cold machine of room Die Casting, this collect fused, Die Casting at an organic whole, used take a robot. The machine of Die Casting of notebook computer cold room of use magnesium alloy is comfortable at producing a wall thick thicker quality is heavier make, for example the dimension of Ao Di Motor Corporation is 1440x3.

5mm, weight is 4.

The car dashboard of 2kg, it is to be in of automatic mould orgnaization, lock force is 24.

Of the production on the machine of cold room Die Casting of 50MN. The right angle that the dimension of company of American general motors is 1470300x2mm bear bridge, heavy 1.

8Kg is in lock force with M60B magnesium alloy 21.

The Die Casting on the machine of cold room Die Casting of 56MN and into. In addition, the product such as hub of chair of the saddle that be like steam, frame, car all is produced with machine of cold room Die Casting. The develops Die Casting of trend magnesium alloy and other metal Die Casting of technology of magnesium alloy Die Casting is same, in Die Casting process magnesium alloy fluid fills up into dispersion condition with high-speed turbulence Die Casting antrum, make the gas inside antrum cannot eliminate, form high-pressured small hole or dissolve to be inside alloy. These stoma are in the notebook computer of use magnesium alloy next meetings fold high temperature to go out or expand bring about cast is out of shape or the face rouses a bag. Because this uses the magnesium alloy Die Casting that traditional Die Casting method produces with other alloy Die Casting same, cannot undertake heat treatment aggrandizement, also cannot use below higher temperature. To eliminate this flaw, raise Die Casting quality, enlarge Die Casting technical scope of application, in recent years research developed a few new Die Casting technologies, be like vacuum Die Casting, half solid state is touched change Die Casting technology. Vacuum Die Casting is take out in Die Casting process model the gas inside antrum, be in with decrease or be being eliminated Die Casting the stoma inside and deliquescent gas, raise Die Casting mechanical function and exterior quality. Magnesium alloy of vacuum Die Casting the least wall is large for 1. 5~2. 0mm, vacuum is spent be less than or be equal to 80kPa, drift rate is the oldest amount to 10m ／ S, cast intensity can raise 10 ％ above, tenacity raises 20-50 ％ , produce the part of a batch of main cars such as a hub of magnesium alloy car and steering wheel successfully with law of vacuum Die Casting at present. Half solid state is touched change Die Casting technology (Thixomolding) is touched change inject shapes is be based on alloy of half solid state to touch change of behavior shape technology, began commercial application 1992. American Thixomat company owns the patent of this technology, had won patent in 26 countries. Touch change inject shapes the technology used a kind alleged " unifinication " shape means, add up to Die Casting with the craft that note model 2 for one, mould and into profile makings and likeness of Die Casting craft, process is adjacent at Injection Molding; Its principle is: Cut treatment of magnesium alloy ingot above all make fine grained record, in loading grain of this magnesium alloy hopper, in carrying a canister compulsively, the screw that rotates in bead canister drives magnesium alloy grain to move to mould direction, heat when what its arrive at a canister when place, alloy grain assumes partial melt position, in helicoid cut action to fall, the alloy stuff that has branch brilliant organization was formed have touch change alloy of half solid state, when its accumulate certain volume, by high speed (5.

5m/s) injects to take the take shape in vacuum warm-up antrum. Alloy of half solid state is OK below outside force action the elephant is thermoplastic plastic and same flow shapes, but touch change the temperature that inject shapes, rotate speed of pressure and screw coming back spends far outclass to fix model equipment. Of figuration heat the compound technology that the system used resistor and induction to heat, heat alloy to 582 ± 2 ℃ , mark of solid photograph bulk amounts to 60 ％ , connect argon gas to undertake protective at the same time. (caption: Magnesium alloy touchs change inject shapes principle picture name: Magnesium alloy is touched change inject shapes principle) magnesium alloy is touched change shape to be compared with traditional Die Casting photograph, touch change inject shapes need not melt of liquid state metal and pouring wait for a process, manufacturing process is relatively clean, safety and energy-saving. Arise without frit fluid, unit figuration raw material is used up decrease greatly, without explosive danger, need not SF6 gas protection, eliminate the SF6 destruction to ozonosphere, shape the gas of the be involved in in the process decreases substantially, spare parts porosity is less than 0.

069 ％ , because this shapes can heat treatment, shape send density tall, mechanical performance is good, be able to bear or endure corrode capability is strong. Compare with photograph of traditional Die Casting, working temperature reduces 100 ℃ about, be helpful for improving life of Die Casting model, make its produce a process to have good consistency, reduced magnesian cast to be in model the shrinkage inside, those who reduced cast take off model obstruction, raised the dimension precision of cast, quality of spare parts surface is good, can cast a wall thick amount to 0.

7~0.

Of 8mm frivolous. The drive that already gave a car with this law production at present implement housing of housing, lid, igniter, uses magnesium alloy is AZ91D. Half solid state shoots the magnesium alloy of high automation casting forming machine and its product line develop in industrial developed country very fast, the course of study of magnesium alloy Die Casting of our country also is beginning to use half solid state to shoot casting forming machine in great quantities, half solid state shoots casting plane, the main trend that makes cast of manufacturing magnesium alloy. The car component our country of use magnesium alloy is touched with Yu Mei alloy at present change the magnesium alloy forming machine that shaping machine is the JSW-MG Ⅱ system that Japan makes steel place mostly. Applied domain magnesium alloy has proportion light, intensity is high, electromagnetism screen sex is good, suck brace up the gender is good, the characteristic that can reclaim, because this is applied extensively in the domain such as component of 3C product, car. The whole world is numerous and famous among the product that the enterprise uses magnesium alloy at them already. For example: Manufacturer of mobile phone, PDA: MOTOROLA, NOKIA, NEC, PANASONIC, SONY-ERICSSON. Notebook computer manufacturer: Toshiba, DELL, HP, associate, NEC, SONY, PANASONIC, divine boat. Photograph manufacturer of product of collection seeing and hearing: SONY, below the pine, NEC, JVC, HITACHI, SHARP, KENWOOD. Car component manufacturer: General, feng Tian, ford, kelaisile, the masses. CNC Milling CNC Machining