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Magnesium alloys contg. aluminium for pressure die castings - where calcium or sodium are added to reduce hot tear formation
Magnesium alloys contg. aluminium for pressure die castings - where calcium or sodium are added to reduce hot tear formation
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机译：镁合金续用于压铸件的铝-添加钙或钠以减少热撕裂的形成
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摘要
The application of magnesium-aluminium pressure die casting alloys to the prodn. of pressure die castings which are susceptible to the formation of hot tears, due to the shape of the casting and its mfg. process, where the alloys contain 3-10% Al, 4% max. Zn, 0.5% max each of Mn, Si, Cu and with 0.005-0.4% calcium and/or sodium, the remainder being magnesium. The pref. alloy contains 3-10% Al, 4% max Zn, 0.5% max. each of Mn, Si, Cu but with 0.01-0.2% calcium and/or sodium, the remainder being magnesium. A marked redn. in the incidence of hot tears is achieved.
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