Petroleum and natural gas industries - materials for use in h2s - containing environments in oil and gas production - part 2 : cracking - resistant carbon and low alloy steels , and the use of cast irons 石油和天然气工业.在油气生产中含h2s环境下使用的材料.第2部分:抗裂碳低合金钢和铸铁的使用
The wearing resistance , microstructure , worn surface morphology and hardness change in wearing end - face and non - wearing end - face of cr - mn - cu alloy white cast iron were tested and analyzed 摘要对铬锰铜合金白口铸铁的耐磨性、无磨损端面及磨损端面的微观组织、磨损形貌及硬度进行了试验和分析。
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Vermicular iron has graphite shape between flake graphite of gray iron and nodular graphite of nodular iron , tensile strength higher than that of gray iron by 70 % , and some lower than that of nodular iron , so is a sort of excellent material for structural parts 摘要蠕墨铸铁的石墨形状介于灰铁的片状石墨与球铁的球状石墨之间，抗拉强度高于灰铸铁70 % ，略低于球墨铸铁，是结构件的优良材料。
With addiction of steel fiber , the damping of sfpc has a little decli nation preparing with pc , under the best condition , the damping of sfpc is six to eight times lager than that of the traditional rnateria 1 casting iron 我们研制出的钢纤维聚合物混凝土，比聚合物混凝土有更高的强度，更重要的是这种材料在加入钢纤维之后材料的阻尼比变化很小，在满足强度最佳情况下，其阻尼比为铸铁的6 8倍。
Abstract : considering the cutting tool ' s dynamic intensity . this paper made optimization about the cutting value of higher chromium which cast iron , and put forward a theoretic foundation which can be used to cut higher chromium white cast iron with ceramic cutting tools economically 文摘:考虑刀具动态强度条件下，对用陶瓷刀具加工高铬铸铁的切削用量进行了优化计算，从而为用陶瓷刀具经济性地加工高铬铸铁提供了理论依据。
The vc - fe surface composite shows high wear - resistance , it ' s wear - resistance is 4 . 20 times as that of chilling respectively . with the content of v increasing , it ' s rigidity and wear - resistance increases continually . more vc grains gained , and well distributed , better wear - resistance the vc - fe surface composite will show . ( 7 ) surface cermet composite was formed by the means of cast - sintering technique , with the help of adding wc grains and the quantity of heat sent out from the reaction v + c vc , the carbide cermet quality percent exceeds 60 % 在重载干滑动摩擦条件下， vc一fe表面复合材料显示了很高的耐磨性，其相对耐磨性是可淬硬铸铁的4 . 2倍:随着含v量的增加， vc一fe表面复合材料的铸态硬度和耐磨性不断提高， vc颗粒越多，分布越均匀，表面复合材料的耐磨性就愈好。
The results indicate that the fracture toughness is influenced markedly by the different base structure of vermicular east iron and by the form of graphite ; unlike steel , the fracture toughness of vermicular cast iron increases with the yielding strength , while drops drastically with the increase of ratio of graphite grain length to thickness 试验结果表明，蠕墨铸铁的断裂韧度受不同基体组织的影响比较明显；受不同石墨形态的影响显著，与结构钢不同，蠕墨铸铁的断裂韧度随材料的屈服强度增大而增大，随石墨颗粒的长厚比增加会急剧下降。
The composition , microstructure , properties and application of abrasion resistant materials such as mn steel , low alloy steel , white cast iron have been introduced in details and the wear resistant structure steel material and casting composite materials and high b casting alloy have also been reviewed 摘要详细介绍了耐磨材料奥氏体锰钢、低合金钢和白口铸铁的成分、组织、性能及其应用进展，还对耐磨钢结材料和耐磨铸造复合材料以及新开发的高硼铸造耐磨合金进行了评述，期待为科学选择耐磨材料提供参考。
