Stainless steel precision castings, silica sol process. It is a low-cut or no-cutting casting process. It is an excellent process technology in the foundry industry. It has a wide range of applications. It is not only suitable for casting of various types and alloys, but also produces castings with dimensional accuracy, The surface quality is higher than other casting methods, and even the complex, high-temperature resistant, and difficult-to-process castings that are difficult to cast by other casting methods can be cast by investment casting.
During the production of stainless steel precision casting, the sulfuric acid oxide film is an important factor affecting the high purity and transparency of the oxide film of stainless steel castings. The porosity, purity, thickness and sealing quality of stainless steel precision casting will directly interfere with the mirror effect of the casting.
If there are more impurities in the oxide film of stainless steel precision casting, its purity will be low and transparency will decrease. The impurities in the oxide film are mainly derived from the stainless steel casting itself, and part of it comes from the oxidation bath. Therefore, appropriately reducing the content of alloying elements in the casting can minimize the content of impurities.
The equipment required for the basic process of stainless steel precision casting is: precision casting wax injection-wax injection machine, ice water machine, air conditioner; slurry dipping-slurry bucket, floating sand machine, air conditioner, dewaxing furnace, dehumidifier, dewatering bucket, standing bucket , The dipping slurry can also choose a mechanical arm and an automatic centralized wax supply system;
Gold melting-sintering furnace, high frequency furnace, shell shaker; post-processing-cutting machine, smoothing machine, sandblasting machine, sand cleaning machine, heat treatment furnace, punching machine; maintenance-pneumatic grinder, argon welding machine, smoothing machine; Quality assurance-spectrometer, three-dimensional, etc. These are relatively common and common, if you need more advanced, you also need a vacuum casting furnace or a vacuum heat treatment furnace or X-ray and so on.
The output of stainless steel precision casting cast steel is relatively stable, and the quality, variety, performance, and proportion of alloy steel and special steel of steel castings continue to increase. The use of various refining processes and technologies to develop new cast steel materials can improve the strength and toughness and special properties of the materials.