I. What is Precision Casting of Stainless Steel? In the production of stainless steel products, some products have unusual shapes that cannot be produced using processes like pipe bending. To produce these irregularly shaped products (hollow or solid inside), a process is used: wax mold → sand mold → liquid material filling and molding. Advantages: A variety of styles can be created based on different wax molds. Disadvantages: The precision of the molded blank is not high, and the surface roughness is relatively large. II. Precision Casting Process Flow 1. Making molds according to different product shapes. Molds are divided into upper and lower concave molds, completed through a combination of processes such as turning, planing, milling, etching, and EDM. Concave shapes…
The development of silica sol precision casting in China is relatively recent. The manufacturing process requires high precision, necessitating a deeper understanding of the process in both theory and practice, and continuous improvement of fundamental professional knowledge. Silica sol precision casting enriches practical experience, streamlining the entire precision casting production process and producing higher-quality products. During the filling process, the foam model needs to be liquefied and decomposed, generating many small-molecule gases and foam ash. These substances…
316 and 304 stainless steel castings are widely used in applications requiring corrosion resistance. They are used in all fields, from construction and medical to food processing equipment. Stainless steel castings are ideal for use in environments with high hygiene requirements. Firstly, they do not react with corrosive acids. Secondly, surgical instruments and tableware made of stainless steel are easy to clean and sterilize. Another reason for using stainless steel is that it does not require powder coating to resist corrosion and can maintain its aesthetic appeal. Of course, although they are called stainless steel castings, wear and corrosion are only a matter of time…
Stainless steel casting is a casting process with little or no cutting. It is an excellent technology in the casting industry with a wide range of applications, suitable for casting various types and alloys. Simply put, the stainless steel casting process uses fusible materials to create a fusible model, which is then coated with several layers of a special refractory coating. After melting and drying to form a monolithic shell, the model is melted away from the shell using hot water or steam. Stainless steel casting offers high dimensional accuracy. The investment casting process is complex, meaning many factors directly affect the dimensional accuracy of the castings. The shell is heated…
This standard is based on the casting surface roughness comparison sample block specified in (GB/T 15056-2017) to inspect the casting surface roughness plating, and serves as a reference for casting process and selection of casting surface roughness.
Measures to prevent oxide inclusions: Strictly control the smelting process, smelt rapidly, reduce oxidation, and thoroughly remove slag. Aluminum-magnesium alloys must be melted under a covering agent. The furnace body and tools should be clean, free of oxides, and preheated; paint should be dried after application. The designed casting system must have stable flow, buffering, and skimming capabilities. An inclined gating system should be used to ensure stable liquid flow and prevent secondary oxidation. The selected coating should have strong adhesion, and slag should form within the casting during pouring without peeling. Measures to prevent hot cracking: Localized overheating should be avoided in the actual gating system to reduce internal stress. The mold and core slope must ensure…
