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   air hole 在 金属学及金属工艺 分类中 的翻译结果: 查询用时:0.187秒
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air hole
相关语句
  气孔
    The results showed that the surface grain of deposits was increased with the increase of current density in zero magnetic field, while the air hole appeared in deposits surface due to the emission of hydrogen.
    结果表明:无磁场下,表面晶粒随电流密度增加而增大,同时伴随氢气析出而导致气孔出现,施加10 T磁场后,表面晶粒随电流密度增加呈分裂细化趋势。
短句来源
    Analysis of air hole weld defect in skelp connection Welding
    带钢对接工序焊缝气孔缺陷的分析
短句来源
    Causes of Pinhole and Air Hole for Casting Aluminum Piston and Prevention
    铸造铝活塞针孔、气孔产生原因与防治
短句来源
    Magnesium has some excellent performances such as lower density, higher intensity and recycling utilization, which gradually become the focus on engineering and structure materials. These defects, such as brittleness phases, cracks, air hole, wider heat affected zone (HAZ) and welding distortion, can be formed during welded Mg alloys.
    镁具有低密度、高比强度及可再回收利用等优点,成为工程结构材料领域关注的焦点,但焊接过程中易形成脆性相、裂纹、气孔等缺陷,并且还存在热影响区过宽及焊后变形等。
短句来源
    Further more, the centrifugal casting process of producing double spiral roller grinded-paste machine is explored by making use of NMS cast iron. Dope selection, mould temperature and mould rotational speed is studied. The results show that: dope thickness and brushing process influence directly microstructure of casting surface, air hole and inclusion deficiency, the thickness of the dope should be controlled between 2.0mm and 3.0mm, the coating should adopt thespraying process of the airbrush;
    进而探索了用NMS 铸铁生产双螺旋辊式磨浆机筒体的离心铸造工艺,就涂料的选择、模具温度、铸型转速等进行了研究,结果表明:涂料的厚度和涂覆工艺直接影响铸件表面组织和气孔、夹杂等缺陷,涂料的厚度应控制在2.0~3.0 mm 之间,涂料采用喷枪喷涂工艺;
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  “air hole”译为未确定词的双语例句
    The results show the air hole ratio in the foam alloy is 12.8%~33.5% under the ordinary air press condition.
    实验在常压下制得的稀土泡沫铝合金气孔率12 8%~33 5%。
短句来源
    Preventive Measures of Al-Si Alloy Casting’s Air Hole
    铝硅合金铸件气孔防止措施
短句来源
    The results show that the composite coatings have better metallurgical bond to the substrate, both crack and air hole are not found.
    结果显示 ,合金层与基体成良好的无裂纹气孔的冶金结合。
短句来源
    In this paper, effects of diatomite coating's structures, which include the species and quantity of air hole, upon air pit on the outer surface of ductile iron pipes with large diameter are discussed, and a series of technological parameters to eliminate these flaws, for example, the size of atomized liquid, the temperature and thermal capacity of metal mold, the distance between nozzle and inner surface, the nozzle moving velocity, the rotating speed of metal mold and bentonite content of the coating, have been summarized.
    本文主要从涂层结构 ,即涂层气孔的种类、数量论述其对大口径球铁管外表面凹陷缺陷的影响。 从涂料雾化液滴大小、金属型温度、喷嘴距金属型内表面距离、喷嘴移动速度、涂料中膨润土含量、金属型转速等工艺参数来控制涂层气孔率 ,保证涂层透气性 ,从而消除凹陷缺陷
短句来源
    Through observation and check of aluminum alloy cylinder head waster, main casting defects leading to waster are regarded as air hole, cold interval, shrinkage and porosity and sand hole, and reasons they come into being are analyzed, idiographic prevent and control measures are put forward.
    通过对铝合金缸盖铸造生产废品的观察和检测,认为针孔、缩孔缩松、夹渣、冷隔是造成废品的主要铸造缺陷,并分析了针孔、缩孔缩松、夹渣、冷隔等各种铸造缺陷产生的原因,提出了具体的防止和控制措施。
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  air hole
Normalized frequency parameter Veff as a function of normalized wavelength for various relative air hole sizes is obtained to estimate the dispersion characteristics of PCF.
      
We prove that this resolution can be improved by optimizing the air hole radius as well as the air hole shape.
      
We present an investigation into the transmission loss and dispersion of terahertz waves in plastic photonic band-gap fibers having a cladding with a finite number of air hole rings.
      
These air-guiding regions occur at higher normalized frequencies, resulting in larger air hole pitches favorable for fabrication.
      
In the second half of this paper, we show how the PBGs of KPCFs can be modified by introducing an extra air hole into the vacant space of the original lattice.
      
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In this paper, the as-cast structure of ductile iron and steel casting on the interface of metal-moulds is studied. The condition of the internal surface of the air holes and the castings containing carbon and nitrogen is also studied with an Electron Scanner. The following conclusions are drawn from the investigation; 1. The ductile iron produced by resin-bonded sand tends to grow blister than produced by sea coal sand. The cores of thin steel castings with coating or not have less posibility of producing...

In this paper, the as-cast structure of ductile iron and steel casting on the interface of metal-moulds is studied. The condition of the internal surface of the air holes and the castings containing carbon and nitrogen is also studied with an Electron Scanner. The following conclusions are drawn from the investigation; 1. The ductile iron produced by resin-bonded sand tends to grow blister than produced by sea coal sand. The cores of thin steel castings with coating or not have less posibility of producing air holes. 2. The UPF resin with higher or lower nitrogen has discovered no segregation of nitrogen to ductile iron. To thiner steel castings no segregation of carbon and nitrogen has beern discovered neither. 3. The' UPF resin applied to ductile iron and steel castings has no remarkablely effect on the structure. If a suitable technical process be adopted, the air holes in ductile iron could be decreased, even free from air holes.

为了确定UPF树脂对球墨铸铁、铸钢件质量的影响,对铸型—金属界面区铸态组织进行研究:应用扫描电子显微镜观察气孔缺陷内表面,并对铸件中碳、氮元素进行线、面扫描以确定其对铸件组织的影响程度. 研究表明,UPF树脂砂用于球铸铁件比煤粉砂更易使铸件产生皮下气孔缺陷.对于壁厚不太大的铸钢件,无论砂芯刷涂料与否,产生气孔缺陷的危险性都很小。UPF树脂含氮量高低,对球墨铸铁均无明显的氮元素富集倾向,对于壁厚不大的铸钢件也未发现明显的碳、氮富集倾向. UPF树脂用于球墨铸铁件和小型铸钢件,不会对铸件组织产生不利的影响,如果采取适当的工艺措施,也可减少或消除球墨铸铁件的气孔缺陷.

The 16m3 skim-bob feeding system from traditional way may cause sone foundry defects, such as : dirt inclusion, air hole, etc. ; and make casting difficult to clean. After applying large orifice discharge theory to the system, the above defects disappeared, and a qualified exterior of casting had been obtained and the casting-cleaning work reduced greatly.

用传统方法设计计算16m~3渣包的浇注系统,有时会存在夹渣、气孔等铸造缺陷,而且铸件清整工作量大。采用大孔出流理论修正浇注系统后,以上铸造缺陷消失,获得了外观合格的铸件,大大减少了铸件清整的工作量。

The air hole,inclusion and crack of cast steel surface can be repaired by suitable repair welding

铸钢表面的气孔、夹渣、裂纹等缺陷可以采取适当的焊补工艺进行焊补,焊后低应力、无裂纹、效果佳。

 
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