Do you know what a ductile iron manhole cover is? I'm sure you're still unfamiliar with this name. There are many questions about this ductile iron manhole cover. What kind of role does it play in the market? Let's talk about it today.
It is understood that the demand for urban development and the improvement of product materials will usher in a new round of development for consumer manufacturers。 The data used for the new type of nodular cast iron anti-theft manhole cover is that the excellent nodular cast iron, coke and special nodular agent of the special designated Consumer factory are controlled within the range of level 1-2, and the precise color inside and outside is close to that of the asphalt surface layer, and the concrete well ring surface is not exposed before the manhole cover is integrated into the road and the road to ensure the flatness, which becomes the effect of arriving at the city。 However, due to the color of the old gray cast iron well cover, the color of the exposed asphalt surface of the rough concrete well ring is different from that of the asphalt surface, and the flatness is difficult to control and the road is difficult to control。
The new type of ductile iron manhole cover is made of QT500-7 material, which improves the density of the product, making the product have strong compression resistance, bending resistance, impact resistance, heat resistance, cold resistance, wear resistance, acid and alkali resistance, aging resistance, and deformation resistance. The exquisite casting technology makes the product lines clear, the well cover has a common anti-skid pattern on the surface, increases friction, and prevents pedestrians from slipping due to the cover of rain, snow and ice.
污水井盖在市政井盖系列中有着十分重要的位置,由于污水井里面的水都是比拟脏的污水,所以井盖的安全水平十分关键,必需是合格的污水井盖才干完好可以抵达运用央求,污水井盖内径尺寸大局部都是70cm。山东铸铁污水井盖采用球墨铸铁资料,球墨铸铁井盖强度高、韧性好,因而球墨铸井盖比同类型灰口铸铁井盖轻30％左右。球墨铸铁牌号采用QT500-7,铁水出炉温度不低于1456℃,在球化处置时增配稀土硅铁镁合金和选用含硫量低的焦碳,球化级别达三级以上。球墨铸铁试件的力学性能如下：抗拉强度：500N/MM 2 延伸率：7％井盖试压毁坏荷载超越国度行业规范。
The sewage well cover plays an important role in the municipal well cover series。 Because the water in the sewage well is relatively dirty sewage, the safety level of the well cover is very important。 Only qualified sewage well cover can reach the application requirements in good condition。 The internal diameter of the sewage well cover is 70cm in most cases。 According to the data of nodular cast iron, the strength and toughness of nodular cast iron manhole cover are high, so it is about 30% lighter than the same type of gray cast iron manhole cover。 QT500-7 is adopted for nodular cast iron, and the temperature of molten iron is not lower than 1456 ℃。 Rare earth ferrosilicon magnesium alloy and coke with low sulfur content are added during nodularization, and the level of nodularization is above grade III。 The mechanical properties of nodular cast iron are as follows: tensile strength: 500N / mm2 elongation: 7% well cover pressure test failure load exceeds the national industry code。
Application environment of cast iron sewage well cover: large-scale mine, airport, wharf, heavy-duty vehicle road, municipal expressway。 760 heavy well cover can be used as sewage well cover, water supply well cover, fire well cover, etc。 Shandong cast iron sewage well cover common characteristics: anti-theft, well cover and well seat integration connection, new anti-theft way: internal anti-theft, does not affect the appearance, hammer smash not rotten, intact anti-theft! Bearing serious, ductile iron tensile force and toughness is four times that of ordinary cast iron, close to the material of steel, suitable for all kinds of road use! It is corrosion-resistant, the environment in the water well is complex, all kinds of chemical substances are overflowing, nodular cast iron is not corroded by chemical substances, and its service life is more than 30 years。
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