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| 首页Home＞美国尼伯科公司 Nibco Inc＞青铜与铸铁阀门 Bronze & Iron Valve＞正文Text |
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| 如何定购 how to order |
特点和优点 Features and Benefits |
 美国尼伯科有限公司 |
| 强度 Strength |
和铸铁以及可比的铸钢相比较，球墨铸铁是强度很高的材料。铸钢的屈服强度是30K，而球墨铸铁的屈服强度更高，达到40K。球墨铸铁的强度也远远超过铸铁。球墨铸铁的抗拉强度是60K，而铸铁只是31K。球墨铸铁的屈服强度是40K，而铸铁没有屈服强度。 Ductile Iron is a very strong material when compared to cast iron and comparable to cast steel. Ductile Iron has a higher yield strength than cast steel 40K vs. 30K. The strength of Ductile Iron when compared to cast iron is overwhelming. Ductile Iron tensile strength is 60K vs Cast Iron at 31K. Ductile Iron has yield strength of 40K and cast iron has none. |
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| 耐腐蚀能力 Corrosion Resistance |
在大多数情况下，球墨铸铁的耐腐蚀能力和抗氧化能力都远远超过铸钢，也略优于铸铁。氧化物的渗透可能会严重影响阀门的强度和性能。 Ductile Iron has a corrosion and oxidation resistance in most cases that surpasses cast steel and is slightly better than cast iron. Oxide penetration can severely affect the strength and performance of valves. |
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| 较低的温度转移 Low Transition Temps |
在频繁的温度变化下，黑色金属相对会比较易碎和断裂。美国尼伯科的球墨铸铁的化学成分使得温度转移小于11oC。在结冰气候环境下应用产生物理冲击时，这种特性显得特别重要。 Ferrous metals are subject to brittle fractures with severe temperature changes. The chemical composition of NIBCO’s Ductile Iron provides transition temperatures to -20oF. This property is important if physical shock loading is present in cold weather applications. |
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| 节省成本 Cost Effective |
这些独特的优点使得球墨铸铁成为150 psi蒸汽应用和343°C碳氢化合物处理应用的节省成本的最佳选择。 These unique characteristics make Ductile Iron a cost-effective option for 150 psi steam service as well as hydrocarbon processing up to 650°F/343°C. |
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