What are the significant advantages of ductile iron manhole covers?
2020-01-02
What are the significant advantages of ductile iron manhole covers?
- Categories:Common problem
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- Time of issue:2020-01-02
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(Summary description)In daily life, you can see all kinds of manhole covers everywhere on the streets, including sewage treatment manhole covers, communication manhole covers, and municipal manhole covers.
What are the significant advantages of ductile iron manhole covers?
(Summary description)In daily life, you can see all kinds of manhole covers everywhere on the streets, including sewage treatment manhole covers, communication manhole covers, and municipal manhole covers.
- Categories:Common problem
- Author:
- Origin:
- Time of issue:2020-01-02
- Views:0
Information
In daily life, you can see all kinds of manhole covers everywhere on the streets, including sewage treatment manhole covers, communication manhole covers, and municipal manhole covers. Anyway, you will see the manhole covers every few steps. Some parks are used for beauty and viewing. Invisible manhole covers, among these many manhole covers, I believe that everyone has heard of ductile iron manhole covers. As the name suggests, the material is ductile iron. Because the ductile manhole covers have light weight, high strength, good toughness, corrosion resistance, fatigue resistance, and reasonable cost, these are obvious. Features.
By comparing the chemical composition and physical performance data of the two materials, it is concluded that the material of the ductile manhole cover is much higher than the general manhole cover in terms of tensile strength, elongation, yield strength and ultimate load indenter. The chemical composition The content is much more reasonable than ordinary manhole covers.
Nodular cast iron manhole covers are one of the products of nodular cast iron. Nodular graphite is produced after inoculation and spheroidization, which improves the mechanical properties of the cast iron. It significantly enhances the ductility and toughness of the cast iron, and the strength is even higher. Carbon steel is even bigger. Now, ductile iron manhole covers have developed into a manhole cover second only to gray cast iron manhole covers, which are widely used in urban roads.
There are roughly two shapes of ductile iron manhole covers, round and square. The urban road administration surface generally adopts circular manhole covers, because the circular manhole covers are not easy to tilt, so as to protect the safety of pedestrians and the safety of passing vehicles. Another reason for the circular design is that the diameter of the round manhole cover is the same. If so, when the vehicle passes the manhole cover, no matter which direction it is rolled, the diameter of the ductile iron manhole cover is wider than the lower wellhead. , So that the ductile iron manhole cover will not fall into the well.
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