What are the methods for cleaning the surface of stainless steel castings?

Generally speaking, the cleaning of the surface of stainless steel castings is divided into dry and wet types. The dry cleaning method is mainly shot blasting, and the wet cleaning method mainly includes hydraulic sand cleaning and water sand cleaning.

The dry cleaning method is a friction treatment method based on shot blasting to clean the surface of stainless steel castings. Shot blasting is simply to use compressed air as the driving force to allow the shot wheel to spray to the surface of the stainless steel casting at a certain speed to remove the sand and zinc ash on the surface. However, this friction cleaning method has been selected by many manufacturers due to its low efficiency, uneven cleaning, and poor effect. It has been basically eliminated.

The wet method is mainly based on the principle of electro-hydraulic hammer effect. The high-voltage pulse counter is charged and discharged through a special electrode placed in water to produce a large hydraulic impact. Because the elastic displacement coefficient and vibration frequency of the surface adhesive of the stainless steel casting are different from those of the casting itself, the purpose of sand cleaning is achieved. It has a relatively effective cleaning effect on stainless steel castings with complex shapes, such as deep holes, buried holes, and inner walls. It is a widely used surface cleaning method for a series of castings including stainless steel castings.

The above are two common methods for cleaning the surface of stainless steel castings. These two cleaning methods are not only for stainless steel castings, but most metal casting products need to be cleaned in the process after processing and forming. It is an indispensable process in metal casting products. For the cleaning of the surface of castings, the most important function is to remove a series of residues such as sand and zinc ash on the surface of metal castings, so that the surface of stainless steel castings has more and more stainless steel metal luster and meets the product performance standards. Therefore, the surface cleaning of stainless steel castings is very important. When cleaning the surface of stainless steel castings, it must be carried out in an appropriate manner to ensure the quality of stainless steel castings.