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What is the knowledge of anti-skid characteristics of ball cast iron manhole covers?
Source: clab66.cn Release time: 2022/10/14 11:11:52
Nodular cast iron manhole cover is antiskid. After all, under this precipitation temperature, the road is relatively muddy, and the manhole cover may have deviation if not paid attention to due to material problems. If you pay a little attention to the nodular cast iron manhole cover on the road, you will find that there are many texture design schemes outside. In addition to the beautiful design scheme, the steel fiber concrete manhole cover also has a good anti-skid practical effect, and the knowledge of the precautions for the production and processing of the nodular cast iron manhole cover, especially in rainy or snowy days. Since the surface of the manhole cover is relatively smooth, there is a great possibility of damage caused by passers-by accidentally walking on it.
In order to better prevent passers-by from being injured, great attention is paid to this aspect in the design scheme of nodular cast iron manhole cover, which not only has a good practical effect of decoration design, but also has a certain practical effect of anti-skid. So, is the ductile iron manhole cover antiskid? Natural anti slip effect. Generally, designers will test according to a large amount of data information. If the texture is too deep, the appearance may not be elegant. If the texture cannot reach a certain depth, it cannot have a good anti-skid effect.
Therefore, the design scheme of steel fiber reinforced concrete manhole cover surface line is very necessary. In addition, the manufacturing steps of ductile iron manhole covers are also very careful, which is a strictly managed composition. The carbon and silicon composition of raw iron liquid is higher than that of gray iron, reducing manganese, phosphorus and sulfur composition. The announced temperature of iron liquid is higher than that of gray iron to compensate for gray iron.
When manufacturing and solving the problem of temperature damage of molten iron, gray cast iron is used to solve the problem, that is, spheroidizing agent is added to molten iron and inoculant is added to steel fiber concrete manhole cover to create and solve the problem. The fluidity of nodular cast iron castings is weak, and there are many precautions in the production and processing of nodular cast iron manhole covers. Therefore, it is necessary to have a higher pouring temperature and a larger pouring system software specification, effectively use the riser and cold iron, select the sequential condensation standard, and carry out the heat treatment process.
