Casting Cleaning

Removing burrs and flash: Shot blasting machines can efficiently remove burrs, gate residues and parting surface flash on the casting surface. 

Stripping oxide scale and sticky sand: Oxide scale and sticky sand will form on the surface of the casting after cooling from high temperature. Shot blasting can quickly strip off these impurities. 

Inner cavity cleaning: For castings with complex structures (such as valve bodies and cylinder bodies), shot blasting can clean the internal channels and cavities through directional shot blasting.

Preprocessing

Pre-treatment before painting: The rough surface after shot blasting can enhance the adhesion of the coating and provide a good base for subsequent painting, electroplating and other processes.

Preparation before flaw detection: remove surface impurities to ensure the accuracy of ultrasonic, magnetic particle inspection and other tests.

Surface Strengthening

Improve fatigue strength: Shot blasting creates a compressive stress layer on the casting surface, reducing stress concentration and extending service life (such as gears and crankshafts).

Improved surface finish: Uniform shot impact can reduce surface roughness to Ra 0.8-3.2μm.

Size Correction

For some castings (such as aluminum alloy die castings), shot blasting can slightly correct surface dimensional deviations and reduce the amount of machining.