泵体、泵盖的材质采用铸钢ZG230-450的较多，也可以采用球墨铸铁材质，两种材质对比后者的耐磨性和硬度以及耐温性要因为前者。
Pump cover material with steel ZG230-450 more, can also be used ductile iron, the latter two materials contrast of wear resistance and hardness and heat resistance to be because the former.
正是这种碳的球状微观结构，使得球墨铸铁具有更加良好的展延性和抗冲击性，而铸铁内部的薄片形式导致铸铁没有展延性。
It is this nodular microstructure of carbon in Ductile iron which produces high ductility and shock resistance while the flake form of cast iron results in no malleability.
试验表明：经过表面淬火的铸钢和经过贝氏体淬火的球墨铸铁，其接触疲劳寿命和耐磨性大幅度提高。
The test indicates that contact fatigue life and wear resistance of surface quenched casting steels and Bainite quenched spherical cast iron are increased largely.
本研究针对常用的灰铸铁及球墨铸铁材料分别进行激光处理、感应淬火和氨化处理，然后进行耐磨性对比试验。
This paper is the research of wear resistance for the specimen of grey cast iron and nodular iron by laser treating, induction hardening and nitrocarburizing.
研究了不同产地原料生铁的成分、组织和缺陷在生产球墨铸铁时对铸件的遗传性影响。
The influence of composition, structure and defects of pig irons from different producing areas on the heredity of nodular cast iron was investigated by.
本文借助实验，探讨了铸铁、球墨铸铁的磨损特性，同时指出了几种提高其耐磨性的表面处理方法。
This paper has discussed the wearability of groy cast iron and nodular cast iron and provided several surface treating methods for increasing their wear-resistance.
简要介绍了球墨铸铁管材料的特点，特别探讨了球墨铸铁管在新领域——高压消防水系统中应用的可行性。
The characteristics and advantages of ductile iron material are briefly described in this article, especially, the feasibility about being used in high pressure fire fighting system is discussed.
曲轴表面及本体的缺陷，对发动机的可靠性有重要影响，对锻钢和球墨铸铁曲轴的探伤技术进行探讨。
Defects of crankshaft surface and body will produce important effect on engine reliability. This paper probes into flaw detection technology of forging steel and nodular cast iron of crankshaft.
对影响球墨铸铁件皮下气孔的各种因素分析表明，铁液中气体的产生有其必然性，通过减少气体的发生量以防止皮下气孔的方法并不是都能奏效。
Discussing various influence factors of ductile iron's surface blowhole defects indicates that bringing various gases in the molten metal or on the interface with the sand mould is inevitable.
研究了镧镁球化剂的球化能力及其对球墨铸铁白口敏感性和抗衰退性的影响。
The nodulizing power of the La-Mg nodulizer and its influences on the chilling sensitivity of nodular cast iron and the property of anti-degeneration were studied.
研究了镧镁球化剂的球化能力及其对球墨铸铁白口敏感性和抗衰退性的影响。
The nodulizing power of the La-Mg nodulizer and its influences on the chilling sensitivity of nodular cast iron and the property of anti-degeneration were studied.
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