Do yoknow? There are many factors that affect the quality of cast iron manhole covers, such as design process, raw materials, casting process and other factors. When you buy a product, you want to use it for a long time, instead of breaking it after a period of time. Rather than saying that, we might as well think of ways to improve its quality. The same is true for cast iron ductile manhole covers. What methods should we use to improve its quality?
1. There must be a casting process. That is, according to the structure, weight and size of the casting, the characteristics of the cast aluminum alloy and the production conditions, select the appropriate analysis surface, shape design, core-making method, and set the casting bars, chills, caps and pouring systems, etc. In order to ensure that high-quality goods are obtained.
2. The quality of raw materials for cast iron ductile manhole covers. The quality of raw materials such as metal material recycling waste, refractory insulation materials, fuels, solutions, mildew agents, and foundry sand, molding sand adhesives, and architectural coatings is not up to standard, which will cause air holes, pinholes, welding tumors, and pinches in castings. Defects such as slag will endanger the appearance and internal quality of iron castings, and in severe cases, the castings will be damaged.
3. When producing cast iron manhole covers, pay attention to the quality of the product. We also know that cast iron manhole covers are used for wellbore protection. And its use environment is also very bad, so it must have high corrosion resistance and strong pressure resistance.
4. The manhole covers produced by us should also have high anti-aging properties. The problem of the general cast iron ductile manhole covers is cracking. The cracking is due to the high temperature during the heat treatment process in the casting, or the lack of proper control during the casting process. The addition of some related components to avoid solid changes to moderate ductility leading to cracking.
5. For the actual operation of cast iron ductile manhole cover processing technology, it is necessary to formulate safe operation procedures for processing technology, improve the technical strength of employees, and ensure that the process regulations are properly implemented.
Because cast iron ductile manhole covers involve many places in our daily life, the quality problem cannot be ignored. The quality problem of the improved product will last for a long time, and it can also reduce the occurrence of failures.
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