Do you know? There are many factors affecting the quality of ductile iron manhole cover, such as design process, material, casting process and so on. When you buy a product, you want to use it for a long time instead of breaking down after a period of time. Instead of this, we might as well think of some ways to improve its quality. It's the same with nodular cast iron well covers. What methods should we take to improve its quality?
1。 Reasonable casting technology is needed。 That is to say, according to the structure, weight and size of the casting, the characteristics of the casting alloy and the production conditions, the appropriate parting surface, molding and core making method should be selected, and the casting rib, chill, pouring system and gating system should be set reasonably。 In order to ensure the quality of products。
2. The quality of raw materials for nodular cast iron well cover casting. If the quality of metal charge, refractory, fuel, flux, modifier, foundry sand, molding sand binder, coating and other materials is not up to standard, the casting will have defects such as blowhole, pinhole, slag inclusion, sand sticking, etc., which will affect the appearance quality and internal quality of the cast iron, and even make the casting scrapped in serious cases.
3d捕鱼3。 In the production of ductile iron well cover, we must pay attention to the quality of products, we also know that ductile iron well cover is used for wellhead protection。 And its use environment is also very bad, must have high corrosion resistance, strong compression performance。
4。 The manhole covers we manufacture should also have very high anti-aging properties。 The problem of the general ductile iron manhole cover is rupture, because the temperature is too high during the casting heat treatment, or is not effectively added in the casting to prevent the excellent change of the effective brittleness。
5. In the process operation of nodular cast iron well cover, it is necessary to formulate reasonable process operation procedures, improve the technical level of workers, and correctly implement the process procedures.
As the ductile iron well cover in our life involves a lot of places, so the quality problem can not be ignored, improve the quality of the product, the use of a long time, but also reduce the failure.
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