the first isLost wax castingDesign craftsmanship of castings. When designing, in addition to determining the geometry 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 the characteristics of the casting process, that is, the obvious scale effect and the scale effect of the dewaxing casting Solidification, shortening, stress and other issues to prevent or reduce the occurrence of defects such as component segregation, deformation, and cracking of the casting.

Second, there must be a reasonable dewaxing casting process. That is, 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 castings.

The third isGuangdong alloy steel castingThe quality of the raw materials used. The quality of metal charge, refractory materials, fuels, fluxes, modifiers, foundry sand, sand binders, coatings and other materials are substandard, which will cause the castings to have defects such as pores, pinholes, slag inclusions, and sand sticking, affecting Guangdong alloy steel The appearance quality and internal quality of cast castings will be scrapped when severe. The fourth is process operation. It is necessary to formulate reasonable process operation procedures, improve the skill level of workers, and enable the correct implementation of process procedures.

In the production of carbon steel casting in Guangdong, the quality of castings must be controlled and inspected. First of all, we must formulate the process rules and technical conditions from raw materials and auxiliary materials to the control and inspection of each detailed product. Each process is strictly controlled and inspected in accordance with the technical rules and technical conditions.

Finally, for the quality inspection of Guangdong carbon steel casting products, reasonable inspection methods and appropriate inspection personnel must be equipped. Generally, for the appearance quality of castings, comparison samples can be used to judge the surface roughness of castings; the fine cracks on the surface can be checked by coloring method and magnetic powder method. rightGuangdong carbon steel castingThe internal quality can be checked and judged by audio, ultrasound, eddy current, X-ray and γ-ray methods.