With analysis lo-Mg-Al alloy composition C5M4 and of reasonable smelting, heat treatment, permanent casting and other technological measures qualified EMU motor cover can be produced.
通过对合金成分分析，采取合理的熔炼、热处理、金属型铸造等工艺措施，能生产合格的动车组用电机端盖。
Casting: Expendable mold and permanent mold.
铸造：一次性铸造和永久性铸造。
Through the adjustment of coating formula and thickness, the service life and the casting quality of permanent mould could be enhanced.
通过调整涂料的配方与厚度，提高金属型的使用寿命和铸件的品质。
The resin-coated sand lined permanent mould casting process was adopted to increase density and dimensions accuracy of castings.
为提高铸件致密度和尺寸精度，采用覆砂铁型铸造工艺。
The performance, role, potential value and application ways of heat pipe in light alloy in permanent mold casting were expounded.
初步评估了热管在轻合金永久型铸造中的行为、作用、利用潜力和应用的基本形式。
The results show that the copper alloy density by permanent-mold casting attains 99.91% of theory density.
结果表明：经金属型铸造的铜合金密度达到理论密度的99 91%。
The permanent mould centrifugal casting process used for production of valve seat for internal combustion engine and the material of casting was described.
叙述金属型离心铸造内燃机气门座的工艺方法和材料特点。
Based on the heat exchange characteristic of permanent mould casting, the thermal resistance of coating level becomes the main thermal resistance of the heat transfer.
基于金属型铸造热交换的特点，涂料层的热阻成为传热的主要热阻。
Any of these countries can block a proposal by casting a negative vote, even if the other four permanent and all non-permanent members vote in favour.
任何一个常任理事国家投反对票，就能阻止提案通过，即使其余4个常任理事国和所有非常任理事国都投赞成票也不行。
Self discipline and continual supply of high quality die casting products are our permanent commitment to our customers.
自我的不断要求并持续供应高品质的压铸产品是我们对客户永远不变的承诺。
Self discipline and continual supply of high quality die casting products are our permanent commitment to our customers.
自我的不断要求并持续供应高品质的压铸产品是我们对客户永远不变的承诺。
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