Five Major Factors Affecting the Quality of Casting Parts
time2021/05/19
- Casting parts are metal molded objects obtained by various casting methods, and their application fields are very wide. This article will specifically introduce the five major factors that affect the quality of castings parts.
Casting parts are metal molded objects obtained by various casting methods, and their application fields are very wide. The quality of castings has a great influence on the performance of mechanical products. The following are five factors that affect the quality of casting parts.
The design process of casting parts
When designing, in addition to determining the geometric shape and size of the casting according to the working conditions and the properties of the metal material, the rationality of the design must also be considered from the perspective of the casting alloy and casting process characteristics, that is, the obvious side effect and solidification and shrinkage. , Stress and other problems, to avoid or reduce the occurrence of defects such as component segregation, deformation, and cracking of the cast parts.
Reasonable casting process
According to the casting structure, weight, and size, casting alloy characteristics, and production conditions, select the appropriate parting surface and shape, core making method, and reasonably set the casting rib, cold iron, riser, and gating system. To ensure high-quality cast parts.
Quality of raw materials
The quality of metal furnace charge, refractory materials, fuel, flux, modifier and foundry sand, sand binder, paint, and other materials are substandard, which will cause pores, pinholes, slag inclusions, sand sticking, and other defects in castings, which will affect the appearance quality of castings And internal quality, if serious, the casting will be scrapped.
Process operation
It is necessary to formulate reasonable process operating procedures, improve the technical level of workers, and enable the correct implementation of process procedures.
Quality inspection
In casting production, the quality of casting parts must be controlled and inspected. First, we must formulate the process rules and technical conditions from raw materials and auxiliary materials to the control and inspection of each specific product. Each process is strictly controlled and inspected in accordance with the process rules and technical conditions. Finally, the quality of the finished castings is inspected. To be equipped with reasonable testing methods and appropriate testing personnel. Generally, for the appearance quality of castings, comparison samples can be used to determine the surface roughness of the castings; fine cracks on the surface can be inspected by the coloring method and the magnetic powder method. The internal quality of castings can be inspected and judged by audio, ultrasound, eddy current, X-ray, and γ-ray methods.
Generally, the quality problems of castings are due to the lack of management of sand used during casting or the weight is not measured during feeding. If you want to learn more about parts of the cast after reading the above content, you can contact us for more detailed solutions. At the same time, our sand casting parts have excellent casting technology, which can prevent hot cracks well.
As a professional parts manufacturer, we have advanced processing equipment and a strict quality management system. We are always committed to providing customers with high-quality and high-precision products. At the same time, we can also provide customers with thoughtful one-stop service and good solutions. If you want to buy our castings, please contact us immediately!