球墨铸铁井盖的特点作者: -1 发布时间: 2018-06-15 次浏览
Well cover is a well known ground equipment。 It is distributed in streets, sidewalks, and motorized lanes in the streets。 As long as there is a sewer, it will exist。 It covers the wellhead of the road so as to prevent pedestrians or objects falling into the wellhead inadvertently。 Although the well cover is unremarkable, it plays a huge role on the road, so the design of the well cover is also improving。 The ductile iron manhole cover is one of the manhole covers。 It is a new type of well cover made of ductile iron。 Compared with the traditional manhole cover, it has the following advantages:
The toughness value is 10 times higher than that of medium carbon steel。
The corrosion resistance of spray corrosion test, the corrosion amount of ninety days is only 1/40 of the steel pipe, 1/10 pipe is grey。 Life is 2 times of gray iron, is 5 times of ordinary steel
The plastic elongation is more than or equal to 7/100, which is similar to that of high carbon steel, while the elongation of gray iron material is zero.
The tensile strength is B higher than 420MPa, and the yield strength is more than s 300MPa, which is three times the same as that of low carbon steel. The strength of spheroidal graphite cast iron is comparable with the strength of cast steel. Spheroidal graphite cast iron has higher yield strength, its yield strength is lowest 40K, and the yield strength of cast steel is only 36K. In most of the municipal applications, such as water, brine, steam, and so on, the corrosion resistance and oxidation resistance of ductile iron exceed the cast steel. The main applications are municipal roads, freeways, communications, electricity, tap water, residential areas, schools and other parks.
Better anti-theft and safety performance. The tensile strength and pressure resistance of the grate of the ductile iron well cover are similar to those of steel, so it is also known as cast steel. Compared with the traditional gray cast iron, its elongation is greatly improved, it has good toughness, not easy to destroy, and has better anti-theft performance than ordinary cast iron well cover, and the overall performance is much better than that of ordinary cast iron well cover.
No noise due to the use of noise prevention patent structure, the well cover when passing the car without noise, no nuisance.