针对试生产过程中铸件产生的各类缺陷，从其形成机理和影响因素方面进行分析，研究挤压铸造各工艺参数对AZ81镁合金的铸造组织的影响。
Aiming at the various defects in production, the effects of squeeze casting process parameters on AZ81 as-cast microstructure were investigated from formation mechanism and influence factors aspect.
铸件的制作涉及到一些奇怪的老式和新式器械以及烤箱，另外还包括一台架在散落标本抽屉上的老式手工离心机(上图)，它是用来赶走铸件中的空气泡的。
The casts are made using an odd collection of old and new instruments and ovens, including an old handmade centrifuge built on stray specimen drawers (above), used to get air bubbles out of the casts.
在冷却期间或冷却后，把铸件从铸模中取出，然后进行交付。
During or after cooling, the cast part is removed from the mold and then processed for delivery.
锌基合金的压铸件总是在氰化镀液中镀铜。
Zinc base die castings are always copper plated in cyanide baths.
铸件-铸型之间的相互作用对铸件凝固过程中热应力的分布有很大的影响。
The interaction between casting and mold has a significant effect on the distribution of thermal stress during solidification.
该研究通过试验模型测量局部加压过程中金属型、铸件和加压杆的温度变化曲线，分析了传热与凝固现象。
The heat transfer and solidification change are analyzed by measuring the temperature change curves of metal mold, casting and pressurized bar in experimental model during local pressurization.
本文研究了铸件铸型体系中异类材料分界面上“复合节点领域”的凝固计算。
This is an algorithm solidification simulation about"multiple nodal region"in boundary node of casting and mold system.
利用振动和冲击使铸型中的型砂和铸件分离的铸造设备。
The use of vibration and impact to the mold casting equipment in separation of molding sand and casting.
目的：探讨储金球在齿科高频铸造的铸道设计中对铸件质量的影响。
Objective To evaluate the effect of reservoir on casting quality in sprue design of dental high frequency casting.
在使用电渣熔铸方法生产变截面复杂铸件的过程中，经常会发生结晶器被侵蚀甚至击穿的重大事故。
In the process of making the complex and various sections casting by electroslag casting method, it will frequently occur serious accidents that the crystal instrument would be always destroyed.
在消失模铸造过程中，模样尺寸变化直接影响铸件的尺寸精度。
The changes of pattern size directly affect the dimensional accuracy of casting in the EPC process.
研究了间接挤压铸件中冷夹层的形成过程及机理，给出了冷夹层形貌的微观分析结果。
The mechanism and course of cold sandwich formed in indirect squeeze cast, and the microanalysis of the form and appearance of cold sandwich were studied.
在薄壁铸件中获得无游离渗碳体和铁素体基体的稀土球铁的关键是高碳过共晶原铁水。
Therefore, in thin section castings, for eliminating eutectic carbides and obtaining ferritic matrix, melts treated by re need high carbon content and hypereutectic composition.
铸件的理化指标完全符合标准中的相关规定。
The physiochemical index of the cast completely measures up to the relevant stipulate.
在粘土砂湿型铸造中，型砂质量和性能对铸件质量、废品率有明显的影响。
Casting quality and rejection rate are remarkably affected by the quality and property of molding sand, in the process of clay sand green mold casting.
采用扫描电镜断口分析、微区能谱分析等方法研究了261汽轮机中汽缸大型铸件开裂问题。
In this paper a macro-cracking in the medium casing which is a heavy section casting of 261 turbogenerator was investigated by SEM, EDAX and others.
经实际生产检验，该模具在使用过程中操作方便、安全，工作稳定可靠，铸件质量达到要求。
After the trial in actual production, it is proved that the die is convenient to operate, safe and reliable, and the casting quality can meet the requirements.
结论：储金球在齿科高频铸造的铸道设计中，使用储金球和不使用储金球，对铸件质量的影响无明显差别。
Conclusion in sprue designing of dental high frequency casting, the use of reservoir and non-use of reservoir have no significant different effect on casting quality.
最后，以高脚杯形挤压铸件作为大高径比挤压铸件的实例，对其挤压铸造过程中的温度场和应力场进行了模拟和分析。
At last, as the example of squeeze casting with large ratio of height to diameter, the temperature field and stress field of high-leg casting were simulated and analyzed.
作者通过对铸造过程中浇注系统的分析和研究，发现影响铸件质量的主要因素是浇注过程中浇口杯的液位。
The writer analyzed and studied the pouring system, found the key factor which influence the casts' quality is the fluid-station in the pouring cup.
研究了铸件中的缩松和铸件力学性能分布特点。
And the shrinkage porosity distribution in the castings and the mechanical properties of the castings were also researched.
因此，如何提高薄壁铸件在金属型中的充型能力成为制约金属型薄壁铸造应用的一项瓶颈技术。
Therefore, improving the filling capacity becomes a core problem for the application of die-casting in thin-wall casting.
铅液的温度要正好适宜于在热稳定的模具中铸出合格铸件。
The temperature of the lead should be such that it is just enough to produce satisfactory castings in a heat-stabilized mold.
由于型号弹上产品中壳体类铸件的砂型铸造生产不能满足要求，项目通过采用低压铸造工艺方法提高了铸件产品的内部质量。
Since the sand shell modeling production of the hull casting cannot meet the needs required, this project adopts low-pressure foundry techniques to improve the internal quantity of products.
介绍304和316等型号不锈钢铸件在表面酸洗和钝化过程中，所碰到的一些问题及解决的方法。
Some problems and solution methods of 304, 316 stainless steel casting during the process of acid pickling and passivation were introduced.
铬锰氮钢铸件，是冶金企业生产烧结矿用烧结机中的易损重要备件。
CrMnN steel casting is the key for sintering machine to produce sintering mine in metallurgy enterprises.
电渣熔铸过程中，金属熔池深度直接影响熔铸件的结晶，从而影响钢锭的质量。
The depth of the metal molten pool influences the crystallization of castings so much as to influence the quality of castings in the ESR.
电渣熔铸过程中，金属熔池深度直接影响熔铸件的结晶，从而影响钢锭的质量。
The depth of the metal molten pool influences the crystallization of castings so much as to influence the quality of castings in the ESR.
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