Vibratory finishing (commonly known as tumbling or trowalizing)
Shot blasting (also referred to as abrasive blasting)
Abrasive beltgrinding
In case of vibratory finishing, we use abrasive media of varied shapes, sizes, and chemical compositions to achieve the desired surface condition of the castings.
Depending on the casting’s size, shape, and weight, we offer two kinds of shot blasting — barrel or suspended. It is possible to use abrasives of different sizes, e.g., CR30 or CR40.
Do you have questions about molds, manufacturing or machining? Contact us – we will be happy to explain everything.
Pon. – Pt. : 7:00 – 16:00
Surface treatment is used to give castings a specific appearance. Depending on the requirements, various textures, colors, or anti-corrosion coatings can be achieved. Some processes, like shot blasting or tumbling, also remove sharp edges from the part.
There is no simple answer to this question. The choice largely depends on the intended use of the specific casting and the environment in which it will operate.
In the shot blasting (abrasive blasting) process, steel shot — small stainless steel beads of a specified grain size — is used. The most common grain size ranges from 0.20 to 0.80 mm.
In the tumbling process, also known as trowalizing, various types of media shapes are used as abrasives. Primarily, these are resin, ceramic, or porcelain shapes. Additionally, technological fluids are applied to assist the process.
Castings with complex surfaces, such as housings, are indeed more susceptible to deformation caused by the abrasive stream ejected at high speed by turbines than castings with a solid structure.
Grinding the castings primarily removes sharp edges from their surfaces. For parts that will later be coated with paint or electroplated coatings, grinding the entire surface eliminates most imperfections that could otherwise become visible later.
