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   冷隔 在 金属学及金属工艺 分类中 的翻译结果: 查询用时:0.612秒
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冷隔     
相关语句
  cold shut
    CRITERION FOR PREDICTING COLD SHUT MARK
    冷隔缺陷预测判据
短句来源
    The defects including surface crack, cold shut and surface splinter on alloy ingot were eliminated.
    解决了合金生产中铸锭表面裂纹、冷隔、起刺等难题 ,实现了大批量提供盘管所用的ACR管材铸锭
短句来源
    the mould temperature should be controlled about at 450 ℃, and when the temperature of the mould is too low, the casting is apt to present the deficiency of cold shut and crack.
    浇注时模温要控制在450℃左右,模具温度太低铸件容易出现冷隔和裂纹等缺陷;
短句来源
    Based on the expericnce from production for years , the investigations were carried out to prevent ZG25 Mn Cr4 type cast steel casting from surface fold and cold shut, which were caused by poor fluidity owing to the oxidation of Mn and Cr in the melt. It is evident that the cast defects mentioned above can be effectively eliminated by close controling the casting prosess parameters.
    本文通过试验表明,严格控制铸造过程中的一些工艺参数,能有效地防止ZG25Mn18Cr4钢铸件表面产生皱纹、冷隔缺陷。
短句来源
    Using Volume of Fluid(VOF)method,combining the fluid flow and heat transfer, the computor simulates not only the two dementionalvelocity field and temeprature field, but also the flowing stoping process,providing the theory ofpredicting and preventing defacts such as shot run, cold shut and so on.
    采用体积函数法(VOF法),将流场和温度场耦合计算,不仅模拟了二维速度场和温度场,而且模拟了流动停止过程,为预测和防止冷隔、浇不足等缺陷提供了理论依据。
短句来源
更多       
  cold shuts
    On the Characteristics & Technological Measures of Cold Shuts and Cracks in Shaping Thin-Shell Grey-Iron Castings
    薄壳灰铸铁件冷隔、裂纹的特性及生产对策
短句来源
    However, die-casting has dash cold effect especially for the thin-wall casting, which will bring cold shuts, running insufficiency etc. and make the quality of casting declining.
    但是由于金属型的激冷作用,冷却速率很大,充型困难,并使得薄壁铸造过程中易产生冷隔、浇不足、铸件表面桔皮组织等而使铸件质量下降,限制了金属型薄壁铸造的应用。
短句来源
    Cold shuts and Cracks are the common defects found in thin-shell grey-iron castings.
    冷隔、裂纹是薄壳灰铸铁件常见缺陷。
短句来源
    Furthermore, they deal with the methods to eliminate such defects as Cold Shuts and Cracks in thin-shell grey-iron castings.
    并由此引伸对克服薄壳灰铸铁件冷隔、裂纹缺陷的讨论。
短句来源
  cold partition
    According to double cast systems designing, side-riser compensating shrink and casting in high temperature, it is good for filling mould, avoiding cold partition and other flaw, improving finished product rate of castings.
    采取双浇道浇注系统设计 ,边冒口补缩 ,高温浇注 ,有利于快速充型 ,防止冷隔、夹砂、夹渣和其它铸造缺陷 ,提高铸件的成品率。
短句来源
  cold lap
    In the processing, some defects appeared on the surface of the wire such as crack, cold lap, axial groove, caving wave, abruption etc . These defects could be slaked by adjusting the parameters.
    在线材制备过程中出现了表面裂纹、冷隔、轴向沟槽条纹、波状弯曲、拉断等宏观缺陷,主要为工艺参数搭配不当所致,可以通过调整参数使之消除。
短句来源
    In addition,two processes are introduced to solve the problem occurring in production,of a sudden enlargement upon the top area of a cold lap in castings with a thin wall cover.
    提出了解决生产中易出现冷隔的顶部面积突然扩大的薄壁盖体类铸件的二种工艺途径。
短句来源
    The reason of misrun and cold lap formation in thin walled aluminum casting is analyzed. Increasing gas exhaust capacity in mould and filling velocity and controlling melt temperature are favorable methods for better effect.
    对薄壁铸铝件浇不足及冷隔的形成原因进行了分析 ,提出了增大铸型排气性、提高充型速度、控制出炉温度的解决措施 ,效果良好
短句来源
    For eliminating the defects of double skin,cold lap and gas hole,etc. of nodular cast iron pipes casted by centrifugal water cooling metallic mould and improving the mechanical wear and hot fatigue of pipe mould,adopts the method spraying SiBa 13 alloy powder to internal surface of pipe mould.
    为了消除水冷金属型离心球墨铸铁管的重皮、冷隔、气孔等铸造缺陷 ,降低管模的机械磨损及热疲劳 ,采用了向管模内喷撒 Si Ba-13合金粉的方法。
短句来源

 

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      cold shuts
    In the absence of gross defects such as cold shuts, the fatigue properties of castings are largely determined by the sizes of microstructural defects, particularly pores and oxide films.
          
    In addition, if the path is too long or complex, cold shuts may occur as the metal freezes before filling the cavity completely.
          
    On the other hand, too slow a gate velocity means that the alloy will cool before the mold is entirely filled, causing cold shuts.
          
      其他


    In this paper through a theoretical analysis rational approaches to increase pressure are presented and the related technological are derived so as to ensure that melted metal will fill a cavity at a constant rate in the process of low-pressure casting or differential-pressure casting.These approaches were verified by some xperiments. In addition,two processes are introduced to solve the problem occurring in production,of a sudden enlargement upon the top area of a cold lap in castings with a thin wall cover....

    In this paper through a theoretical analysis rational approaches to increase pressure are presented and the related technological are derived so as to ensure that melted metal will fill a cavity at a constant rate in the process of low-pressure casting or differential-pressure casting.These approaches were verified by some xperiments. In addition,two processes are introduced to solve the problem occurring in production,of a sudden enlargement upon the top area of a cold lap in castings with a thin wall cover.

    本文通过理论分析,推导出在低压及差压铸造中为保证液态金属匀速充型的合理加压形式及相关的工艺参数,并通过实验进行了验证。提出了解决生产中易出现冷隔的顶部面积突然扩大的薄壁盖体类铸件的二种工艺途径。

    The technology of precision casting for nozzles in fuel assembly is described. The design, accuracy for mold and core box are introduced. The determination of new materials for rapid taking out of core box and fabrication of wax mold are also described. The feeder arrangement should be resonable in order to assure smooth feed of metallic liquid, easy escape of air from mold and reliable teeming. Appropriate measures were adopted to prevent products from producing defects of cold lap, thermal crack, etc. The...

    The technology of precision casting for nozzles in fuel assembly is described. The design, accuracy for mold and core box are introduced. The determination of new materials for rapid taking out of core box and fabrication of wax mold are also described. The feeder arrangement should be resonable in order to assure smooth feed of metallic liquid, easy escape of air from mold and reliable teeming. Appropriate measures were adopted to prevent products from producing defects of cold lap, thermal crack, etc. The results of casting test and exmam-ination of products are given. The testing results indicate that structure and accuracy of casting meet the requirement of design. The precision casting has simpler process, lower cost than welding-finish machining process. The quality of casting is stable and the technology is suitable for batch production.

    叙述了燃料组件管座的精密铸造工艺特点。介绍了压型与芯盒设计、加工精度、快速取芯的型芯材料选择,腊模制造、浇冒系统的合理布置,防止冷隔、热裂采取的措施以及浇注试验和铸件检查结果。试验结果说明铸件的组织及精度满足设计要求。与焊接后精加工的工艺相比较,本精密铸造工艺流程简单、工艺成本低、铸件质量稳定,适合批量生产。

    The technology of precision casting for nozzles in fuel assembly is described. The design, accuracy for mold and core box are introduced. The determination of new materials for rapid taking out of core box and fabrication of wax mold are also described. The feeder arrangement should be resonable in order to assure smooth feed of metallic liquid, easy escape of air from mold and reliable teeming. Appropriate measures were adopted to prevent products from producing defects of cold lap, thermal crack, etc. The...

    The technology of precision casting for nozzles in fuel assembly is described. The design, accuracy for mold and core box are introduced. The determination of new materials for rapid taking out of core box and fabrication of wax mold are also described. The feeder arrangement should be resonable in order to assure smooth feed of metallic liquid, easy escape of air from mold and reliable teeming. Appropriate measures were adopted to prevent products from producing defects of cold lap, thermal crack, etc. The results of casting test and exmamination of products are given. The testing results indicate that structure and accuracy of casting meet the requirement of design.The precision casting has simpler process, lower cost than welding-finish machining process. The quality of casting is stable and the technology is suitable for batch production.

    叙述了燃料组件管座的精密铸造工艺特点。介绍了压型与芯盒设计、加工精度、快速取芯的型芯材料选择,腊模制造、浇冒系统的合理布置,防止冷隔、热裂采取的措施以及浇注试验和铸件检查结果。试验结果说明铸件的组织及精度满足设计要求。与焊接后精加工的工艺相比较,本精密铸造工艺流程简单、工艺成本低、铸件质量稳定,适合批量生产。

     
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