How can a Stainless Steel Cast Base Tray complete the heat treatment process while ensuring the contact area?

Stainless steel has become the material for manufacturing Stainless Steel Cast Base Tray due to its unique chemical composition and physical properties. Stainless steel often contains alloy elements such as chromium (Cr), nickel (Ni), and molybdenum (Mo), which make stainless steel have good corrosion resistance, oxidation resistance, high strength and durability. During the heat treatment process, these alloy elements help stabilize the material's organizational structure and improve the overall performance of the chassis.
Silica sol lost wax precision casting is an advanced casting technology that uses silica sol as a shell material to produce high-precision castings through the lost wax method. It can produce castings with very high dimensional accuracy and shape accuracy, ensuring that the chassis maintains a stable shape and size during the heat treatment process. The high surface finish of the casting reduces the workload of subsequent processing, and also helps to improve the smoothness and roughness of the contact surface. During the casting process, the molten metal fills the cavity under pressure, making the casting dense and reducing the occurrence of defects. During the casting process, by strictly controlling the casting parameters and using advanced casting equipment and processes, it can be ensured that the dimensional accuracy and shape accuracy of the chassis meet the design requirements.
The heat treatment of Stainless Steel Cast Base Tray mainly includes annealing, quenching and tempering. The selection of these steps and the control of parameters have an important impact on the final performance of the chassis. The purpose of annealing is to soften the structure, improve plasticity and toughness, and eliminate the internal stress generated during the casting process. Parameters such as annealing temperature, holding time and cooling rate need to be reasonably selected according to the material and thickness of the chassis. Quenching heats the chassis to above the phase change temperature and then cools it rapidly to obtain the required strength and hardness. During the quenching process, parameters such as heating rate, holding time and cooling medium need to be strictly controlled to ensure uniform transformation of the internal structure of the chassis. Tempering is performed immediately after quenching to stabilize the structure and improve the overall performance. Parameters such as tempering temperature, holding time and cooling method also need to be reasonably selected according to the material and performance requirements of the chassis.
After heat treatment, the chassis needs to be evaluated for performance, including hardness testing, tensile testing, impact testing, etc., to ensure that the mechanical properties and corrosion resistance of the chassis meet the design requirements. At the same time, the dimensional stability and contact area of ​​the chassis also need to be tested to ensure that it meets the use requirements.
When designing the chassis, reasonable structural design and size selection can ensure that the smoothness and roughness of the contact surface meet the requirements. For example, a larger contact area design can be adopted to reduce the pressure per unit area; at the same time, appropriate fillet design can be adopted to reduce stress concentration and wear.
Before and after heat treatment, the contact surface of the chassis can be subjected to surface treatments such as grinding and polishing to further improve smoothness and cleanliness. Grinding can remove surface defects and oxide scales generated during the casting process; polishing can further improve the surface finish and gloss. In addition, the chassis needs to be cleaned to remove impurities such as oil and dust on the surface to ensure the cleanliness and stability of the contact surface.