All kinds of gray iron and ductile iron such as pumps , building materials , compressor parts , sewing machine parts , auto parts etc 水泵类、建筑类、水箱空调压缩机类、缝纫机类、汽车类等铸件，可生产各种灰口铸铁和球墨铸铁。
Depend on the invalidation of the current network ' s statistic ; this thesis selected the gray cast iron pipes as the main object to research 根据对目前国内管网失效情况的统计，本文确定灰口铸铁管管壁强度可靠度作为主要研究对象。
The effect of the structure of austenite zone on the performance of gray iron welding joint is studied by means of thermo - simulated test in this paper 摘要采用热模拟试验方法探讨了灰口铸铁焊接接头热影响区的奥氏体区组织对接头性能的影响。
We find that the cast - iron pipe is only mildly corrosive and the indoor pipeline is just rust - eaten , but the seamless steel pipe corrodes badly 结果表明：主干线灰口铸铁管整体状况良好，只有局部轻度腐蚀；庭院无缝钢管腐蚀较严重；户内管道大多存在不同程度的锈蚀。
The reinforcing effect has been researched , with wc of 40 ~ 60 mesh dimension and 10 ~ 52 wt % volume fraction . the matrices were grey cast iron and low chromium cast iron 复合材料中碳化钨颗粒粒度为40 60目，体积分数范围为10 52 ，基体材质分别选用了灰口铸铁和低铬铸铁，研究了它们的复合效果。
After the study on the characteristic of the fatigue behavior of gray cast iron dryer , the fatigue analysis on this kind of dryer is carried out so as to specify the fatigue analysis method of dryers 本文还在分析灰口铸铁烘缸疲劳特性的基础上，对该烘缸进行疲劳分析，以此说明烘缸疲劳分析设计的方法。
Powerful , dynamic sound with its lively spectrum of tonal nuances . top - grade sand cast iron is used for the cast iron plate , as it is the type of cast iron which is least prone to vibrating , thereby causing unwelcome interference 我们专门选用灰口铸铁来生产这种铸铁板，因为这种材料在所有铸件铸铁材料中最不易随声波产声振动，从而可以有效避免因这种振动所产生的会对钢琴声音有不良干扰。
The main properties of new alcohol based spraying coatings for green sand mold are superior to the abilities of internal and outside coatings of the same kind , the surfaces of castings that are produced used new alcohol based spraying coatings are smooth without adhering sand and gas - hore 粘土湿型砂铸造新型醇基喷涂涂料的主要性能达到了国内外同类产品领先水平；生产的高锰钢、可锻铸铁和灰口铸铁产品表面光洁，无粘砂、气孔等缺陷。
According to the results of explosion experiment and nonlinear finite element analysis of the head of 914mm dryer , the feasibility of the theory of limit load of cast iron applying to the design of heads of dryers is studied and the designing calculation principle for heads of dryers is established 通过914mm烘缸缸盖的爆破试验和非线性有限元分析，研究将这灰口铸铁极限载荷理论运用于烘缸缸盖设计的可行性，从而为烘缸缸盖提供设计计算原则。
Abstract : the formation cause of poor degree of accuracy and lower speed in the traditional quantitative analysis of microstructure , the quantitative analysis of grey cast iron metallographic is developed with the aid of computer image processing system and it can forecast the mechanical properties of materials 文摘:针对传统金相定量分析中准确度低、速度慢的缺点，提出并利用图象处理技术实现了灰口铸铁金相图片计算机的定量分析，进而对其机械性能作出预测。
