The sulfuric acid oxide film is an important factor affecting the high purity and transparency of the oxide film in stainless steel investment casting. The porosity, purity, thickness and sealing quality of the stainless steel investment casting will directly interfere with the mirror effect of the casting.
If there are more impurities in the oxide film of stainless steel investment casting, its purity will be low and its transparency will be reduced. The impurities in the oxide film mainly come from stainless steel castings themselves, and some of them come from oxidation bath liquid. Therefore, if the content of alloy elements in the castings is reduced properly, the impurity content can be reduced as far as possible.
The equipment needed for the basic process of stainless steel precision casting is: precision casting wax ejector, ice water ejector, air conditioner; slurry-barrel, sand floater, air conditioner, dewaxing furnace, dehumidifier, dewatering barrel and static barrel; mechanical arm and automatic centralized wax feeding system can also be used for slurry immersion.
Gold melting-sintering furnace, high cycle furnace, shell shaking machine; post-processing-cutting machine, grinding machine, sandblasting machine, cleaning machine, heat treatment furnace, punch; overhaul-pneumatic grinding machine, argon welding machine, grinding machine; quality assurance-spectrometer, tertiary element and so on. These are more common, if you need more advanced, also need a vacuum casting furnace or vacuum heat treatment furnace or X-ray and so on.
The output of stainless steel investment casting is relatively stable, and the quality, varieties and properties of steel castings, as well as the proportion of alloy steel and special steel are constantly increasing. Using various refining processes and technologies to develop new cast steel materials can improve the strength, toughness and special properties of the materials.
