During the manufacturing process 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 casting. 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 many impurities in the oxide film in stainless steel precision casting, its purity will be low, Transparency will decline. The impurities in the oxide film mainly come from the stainless steel casting itself, and some of them come from the oxidation tank liquid. Therefore, properly reducing the content of alloy elements in the casting can reduce the impurity content as much as possible.
The equipment needed for the basic process of stainless steel precision casting are: precision casting wax injection - wax injection machine, ice water machine and air conditioner; Slurry leaching - slurry barrel, floating sand machine, air conditioner, dewaxing furnace, dehumidifier, dewatering barrel and static barrel. Mechanical arm and automatic centralized wax supply system can also be selected for slurry leaching;
Gold melting sintering furnace, high frequency furnace and shell shaker; Post treatment - cutting machine, grinding machine, sand blasting machine, sand cleaning machine, heat treatment furnace and punch; Maintenance - pneumatic grinder, argon welding machine and grinding machine; Quality assurance - spectrometer, three-dimensional element, etc. These are common. If more advanced ones are needed, they also need vacuum casting furnace, vacuum heat treatment furnace or X-ray and so on.
The output of stainless steel precision casting is relatively stable, and the quality, variety and performance of steel castings and the proportion of alloy steel and special steel are continuously improved. Adopting various refining processes and technologies to develop new cast steel materials can improve the strength, toughness and special properties of the materials.
