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Common problems and solutions of steel castings
Release Date:
2024-05-19
Steel castings are widely used in industrial production, but they often encounter various problems in the production process. This paper will analyze the common problems of steel castings and provide corresponding solutions.
As an important part, the quality of steel casting is directly related to the use effect and safety of the whole equipment. However, there are often some common problems in production, such as pores, shrinkage cavities, fatigue cracks, etc.
The first is the stomatal problem. Porosity refers to the gas pores existing in the cast steel parts, which will affect the mechanical properties and corrosion resistance of the material. The main reasons for the generation of pores are that the gas in the melt is not excluded and the mold wall is not well coagulated. The solution can be taken to strengthen the melt mixing, optimize the gating system and improve the quality of the mold surface.
Followed by the shrinkage problem. Shrinkage cavity refers to the internal depression of steel casting, which affects its mechanical properties and appearance quality. The causes of shrinkage cavity may be insufficient melt temperature, pouring speed too fast, etc. The solution can be to reduce the shrinkage cavity by increasing the melt temperature and extending the casting time.
Finally, the fatigue crack problem. Fatigue crack refers to the crack phenomenon of steel castings under cyclic loading, which will lead to the fracture of steel castings. In order to avoid fatigue cracks, it can be improved by improving the strength of the material, increasing the surface treatment and reducing the stress concentration.
In short, the common problems of porosity, shrinkage cavity and fatigue crack of steel castings can be effectively solved by optimizing the production process, strengthening quality management and improving the technical level of workers, so as to improve the quality and performance of steel castings.
The first is the stomatal problem. Porosity refers to the gas pores existing in the cast steel parts, which will affect the mechanical properties and corrosion resistance of the material. The main reasons for the generation of pores are that the gas in the melt is not excluded and the mold wall is not well coagulated. The solution can be taken to strengthen the melt mixing, optimize the gating system and improve the quality of the mold surface.
Followed by the shrinkage problem. Shrinkage cavity refers to the internal depression of steel casting, which affects its mechanical properties and appearance quality. The causes of shrinkage cavity may be insufficient melt temperature, pouring speed too fast, etc. The solution can be to reduce the shrinkage cavity by increasing the melt temperature and extending the casting time.
Finally, the fatigue crack problem. Fatigue crack refers to the crack phenomenon of steel castings under cyclic loading, which will lead to the fracture of steel castings. In order to avoid fatigue cracks, it can be improved by improving the strength of the material, increasing the surface treatment and reducing the stress concentration.
In short, the common problems of porosity, shrinkage cavity and fatigue crack of steel castings can be effectively solved by optimizing the production process, strengthening quality management and improving the technical level of workers, so as to improve the quality and performance of steel castings.
Key words:
Weldments
Iron castings
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