How to clean the surface of silica sol precision castings
The overall cleaning of the surface of silica sol precision castings is divided into two categories: dry, wet, and dry cleaning methods. In the main blasting process, the wet hydraulic cleaning method is mainly the solution deoxidation, water deoxidation, and the dry cleaning method is mainly during the blasting process. The surface treatment of friction stainless steel castings is clean. The blasting process is simply driven by compressed air, so that the projectile is sprayed onto the surface of the stainless steel castings at a certain speed. The surface is clear with sand and iron oxide, but the friction cleaning method is low in efficiency and cleaning. The uneven effect and other reasons have been adopted by the factory and have almost been eliminated.
The wet cleaning method is mainly based on the principle of the electro-hydraulic hammer effect. The high-voltage pulse generator is discharged step by step through a special electrode placed in the water, resulting in a larger hydraulic impact. Due to the difference in elastic modulus and vibration frequency between the surface adhesive of stainless steel castings and the casting itself, the purpose of sand removal can be achieved. For silica sol precision castings with complex shapes, such as deep holes, blind holes, inner cavities, etc., it has a more effective cleaning effect. It is one of the most widely used methods for cleaning the surface of a series of castings including stainless steel castings.
The above are two common cleaning methods for the surface of silica sol precision castings. Here I need to remind you that these two cleaning methods are not only for stainless steel castings, but most of the metal casting products need to clean the surface during the post-processing and molding process. Casting products is an indispensable process. The surface of castings is clean. The main function is to make stainless steel castings and the metal luster of the stainless steel surface meet the product standard in addition to the metal casting sand on the contact surface and a series of impurities such as iron oxide. It is very important to clean the surface of stainless steel castings. When cleaning the surface of stainless steel castings, you must follow the correct method. To ensure the quality of silica sol precision casting products.
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