According to the analysis of many years of casting experience, the North aluminum foundry is prone to many quality problems in the casting process, but the core factors that really affect its quality are roughly divided into four categories.
The first is the design process of castings. During the design, in addition to determining the casting geometry and size according to the working conditions and metal material properties, the northern aluminum casting manufacturers must also consider the rationality of the design from the perspective of casting alloy and casting process characteristics, that is, obvious size effect, solidification, shrinkage, stress and other problems, so as to avoid or reduce the component segregation, deformation Crack and other defects.
Second, there should be a reasonable casting process. That is, according to the casting structure, weight and size, casting alloy characteristics and production conditions, select the appropriate parting surface, modeling and core making methods, and reasonably set the casting reinforcement, cold iron, riser and gating system, so as to ensure the acquisition of high-quality castings.
The third is the quality of raw materials for casting. The quality of metal charge, refractory, modifier, casting sand, molding sand binder and other materials is not up to standard, which will cause defects such as air hole, pinhole, slag inclusion and sand sticking, affect the appearance and internal quality of the casting, and in serious cases, the casting will be scrapped.
The fourth is process operation. Northern aluminum casting manufacturers should formulate reasonable process operation procedures, improve the technical level of workers and correctly implement the process procedures.
The above are the four factors affecting the casting quality. Northern aluminum casting manufacturers must pay attention to these problems when casting to improve the casting quality, so as to improve the work efficiency and avoid returning to the factory for reprocessing.
Editing: WMM