的成交记录。银元材质珍贵，艺术价值高，由贵重金属或白银合金铸造，制作。
Transaction record. Silver precious material, high artistic value, cast by the precious metals or silver alloy production.
可以用于铸造的材料类型有：铝合金、青铜、工具钢、不锈钢、钨铬钴合金、镍基合金和贵金属。
Thee types of materials that can be cast are aluminum alloys, bronzes, tool steels, stainless steels, stellite, hastelloys, and precious metals.
阐述了金属型铸造摩托车铝合金整体车轮的模具结构、工作原理及特点、铸造工艺流程、工艺参数及产品性能。
The die construction, running principle and features, technological process flow, technique parameters and product performance of aluminum alloy integral naves by gravity die casting are described.
通过低压铸造后固溶处理的方法，获得了网状金属间化合物增强铝合金表面复合层。
Intermetallic compound foam reinforced aluminium alloy surface composite layer are obtained by solution treatment after low pressure Casting.
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 results show that the copper alloy density by permanent-mold casting attains 99.91% of theory density.
本文研制一种新型铸造合金线收缩-应力-热裂特性多功能测定仪，它可以方便准确的测定金属热裂、应力、线收缩特性。
A new multifunctional device for testing linear shrinkage, stress and heat check of casting alloy easily and quickly is developed in the paper.
在所有半固态镁合金试验中，水淬试样的晶粒密度都大于重力铸造的金属型试样的晶粒密度。这表明在半固态成型过程中，晶粒有很强的长大合并的趋势。
The density of the quenchinching samples was higher than that of the metal-mould ones and the grains were much easier to grow and merge in the shaping of the semi-solid alloys.
采用铜合金金属型生产小型薄壁球墨铸铁件是铸造领域一项新技术。
Using copper alloy mould to make the small-sized and thin wall ductile iron castings is a new technology in the foundry field.
分析了金属型铸造铝合金摩托车减震筒铸造缺陷的产生原因。
Origination of casting defects in aluminum alloy motorcycle damping cylinder in metal mould casting was analyzed.
本发明适用于碱土金属的冶炼及其合金冶炼、铸造、压铸、挤压等生产。
The method of the invention is applicable to the smelting of alkaline-earth metals as well as production, such as alloy smelting, casting, pressure casting, extrusion, etc.
论述了碱金属元素对多种铁碳铸造合金的重要改性作用。
The modifying effects of alkali elements on various Fe-C cast alloys are presented.
介绍了银汞合金桩核、螺纹桩复合树脂桩核、铸造金属桩核、组合式桩核的制作方法和临床应用。
There are such types of pile combs as silver-mercury, thread compound, mould metal, combination. The thesis also discusses the making and the clinical application.
目的对低贵金属含量合金铸造精确程度进行比较评价。
Objective To evaluate the casting accuracy of two low-noble dental alloy systems.
氮化钛涂层可降低牙科铸造合金，尤其是贱金属合金的腐蚀倾向，提高其耐蚀性。
Titanium nitride coating can decrease corrosion tendency and improve corrosion resistance of dental casting alloys, especially of non precious alloys.
结论两种低贵金属合金的铸造精度良好，能够满足临床要求。
Conclusion the two low-noble alloys had good casting accuracy and could satisfy the clinical requirements.
重点叙述了低压铸造技术在铜合金及黑色金属领域的研究应用状况，并展望了低压铸造技术在未来的发展趋势。
In addition, the research and application of low pressure casting technology in copper alloys and ferrous metals are described emphatically.
为了提高镁合金的力学性能和铸造性能，试验研究了典型镁合金zm5的各组元对性能的影响，特别研究了添加金属银对性能的改善。
Influence of the alloying elements, especially Ag addition on the properties of typical Mg alloy ZM5 is studied in order to improve mechanical and cast properties of Mg alloy.
目的：观察比较反复多次铸造对贵金属烤瓷合金金相结构的影响。
Objective: To study comparatively on the effect of repeated casting on the as-cast microstructures of a precious metal ceramic alloy.
目前镁合金以压铸成型为主，所有金属成型工艺一般都可用于镁合金的成形加工，如铸造、压力加工和各种机械加工。
Magnesium alloys can be produced by nearly all the metal fabrication methods, such as casting, bulking working and mechanical forming etc.
介绍了采用金属型铸造生产铝合金驱动板的模具结构和铸造工艺；对驱动板几种典型缺陷产生的原因和解决方法进行了分析。
The die design and technique of gravity die casting process for driven belt wheel are introduced. The causes and corresponding resolving methods of some typical defects are analyzed.
采用铸造方法制作牙科合金试样，分别为：普通镍铬合金16个，贵金属合金8个，并对8个镍铬合金试件清洗后行镀金处理。
Dental alloy test pieces were made by casting, among them, 16 test pieces were Ni-Cr alloys and 8 ones were gold alloys.
通过对铝合金挤压铸造成形时的凝固分析，推导出了芯轴抽芯力的计算公式，该计算式也适用于其他液态金属成形方法。
From condensation analysis on aluminium alloy liquid forging, calculation formula of drawing spindle strength has been derived. the calculation formula is adapted to other liquid metal shaping.
同时还介绍了铸造铝合金-金属陶瓷复合材料的试验情况及发展前景。
Meanwhile the paper also presents the experimental information and developing prospects of the cast aluminium alloy-ceramic metal compound material.
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。
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.
目的对比钴铬合金、低钛合金及镍铬合金3种贱金属合金铸造冠，在3.0T及1.5 T磁共振成像检查时，产生金属伪影的最大面积及伪影涉及的扫描层数。
Objective To investigate the influence of three dental alloys casting crowns on the artifacts of MRI imaging during the examination of 3.0T MRI and 1.5T MRI.
金属流动系统，在用压力铸造铸造机使用铝合金，是由一个模具或模具装配组件，为这台机器，它定义了一个死腔。
A metal flow system, for use in casting aluminium alloy using a pressure casting machine, is provided by a component of a die or mould assembly, for the machine, which defines a die cavity.
介绍了2011易切削铝合金的一些熔炼铸造工艺特点。介绍了在2011合金中加入的低熔点金属特殊的加入方式。
The melting and casting technology of the easy-cutting aluminum alloy2011 was introduced, especially in view of the doping method of those low melting point elements.
介绍了2011易切削铝合金的一些熔炼铸造工艺特点。介绍了在2011合金中加入的低熔点金属特殊的加入方式。
The melting and casting technology of the easy-cutting aluminum alloy2011 was introduced, especially in view of the doping method of those low melting point elements.
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