In recent years, die Casting of magnesium alloy car in car blame respect of structural member application is replacing aluminium alloy Die Casting, the light metal that includes magnesium to make steering wheel, magnesium make brake pedal bracket go up in market of active contention car is had rate, in can make sure function of car spare parts and security premise fall likewise, magnesium alloy spare parts should compare aluminium alloy Die Casting light 25 ％ of 20 ％ ～ , and magnesium alloy Die Casting can model more complex form, approach figuration size, and can carry a lot of complex parts be cast or Die Casting becomes unifinication, saved spare parts of a lot of treatment, join to assemble cost and time cost, always. Magnesium alloy is in car part is small the look is harder to aluminium alloy on quantified application hold the market, and what factory of world each cart reachs supplier of OEM spare parts is light quantify strategy active, use magnesium alloy in the car decision effect has in growing. At present magnesium alloy is in not only in the application of automobile industry crust of dashboard, seat wearing, gear-box, cylinder and canal of the Qi that take energy of life develop continuously, global auto industry and magnesian industry also are being developed actively high temperature resistant, fight go the magnesium alloy that becomes characteristic. Luolan Berger is politic and advisory (Roland Berger Strategy Consultants) research report points out, at present magnesium alloy spare parts is occupied only in the application of general Europe medium-sized car 0. 5 ％ , main application product is gear-box, dashboard, with steering wheel. Rules of world environmental protection is increasingly rigorous, facilitating each country develops technology of magnesium alloy figuration and the method that find cost of low raw material of beg to surrender to the utmost. The magnesium alloy application on the car, at present still bureau be confined to a few housing that move below normal temperature spare parts (if the hand moves transmission crust, clutch crust to wait) and inside outfit (wait like steering wheel system, dashboard) , and these spare partses are in truckload in what occupying weight to compare is very finite. Future must implement engine and chassis part (include round of group) magnesium alloy is changed, but engine and main transfer machinery need to have good heat-resisting performance (high temperature resistant and fight go metamorphic can) , chassis spare parts needs high strenth, tall tenacity, fight exhaustion and corrosion resistance can, because this develops the magnesium alloy of new-style high-powered, low cost,be the major task that maker of line of business of current world car is badly in need of solving. CNC Milling
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