Shot blasting process method of aluminum casting

Abstract

The invention relates to a shot blasting process method of an aluminum casting. The method is characterized in that shot blasting treatment is carried out on the aluminum casting by adopting a shot mixture, wherein the shot mixture comprises metal atomized shots, recovered metal atomized shots and aluminum shots, the hardness of the metal atomized shots and the recovered metal atomized shots ranges from 32 HRC to 38 HRC, the tensile strength of the metal atomized shots and the recovered metal atomized shots ranges from 1300 Mpa to 2200 MPa, the particle size of the metal atomized shots rangesfrom 0.08 mm to 0.2 mm, the mass percent of the metal atomized shots ranges from 60% to 90%, the particle size of the recovered metal atomized shots ranges from 0.08 mm to 0.2 mm, the mass percent ofthe recovered metal atomized shots ranges from 0 to 30%, the particle size of the aluminum shots ranges from 0.6 mm to 1 mm, and the mass percent of the aluminum shots ranges from 10% to 20%. According to the shot blasting process method of the aluminum casting in the scheme, the surface roughness of the aluminum casting can be effectively reduced, the surface color brightness is improved, and therefore the aluminum casting can meet the appearance standard and functional requirements.

Description

technical field [0001] The invention relates to the technical field of surface treatment, in particular to a shot blasting process for cast aluminum parts. Background technique [0002] The shot blasting process is a commonly used surface treatment process in the field of material processing. Specifically, the shot blasting machine is used to throw projectiles at high speed to continuously impact the surface of the workpiece, so that the appearance and mechanical properties of the workpiece can be improved. The traditional shot blasting process of cast aluminum parts mostly uses a single stainless steel shot (such as 430# stainless steel shot, 0.2±0.1mm (silver gray), hardness ≤38°HB, tensile strength ≤850Mpa) to surface cast aluminum parts The unreasonable use of its materials, proportions and specifications will have a greater impact on the outer surface of cast aluminum parts, resulting in higher surface roughness (usually around 5.8Ra) and dull surface color, which will ...

AI Technical Summary

Problems solved by technology

The traditional shot blasting process of cast aluminum parts mostly uses a single stainless steel shot (such as 430# stainless steel shot, 0.2±0.1mm (silver gray), hardness ≤38°HB, tensile strength ≤850Mpa) to surface cast aluminum parts The unreasonable use of its materials, proportions and specifications will have a greater impact on the outer surface of cast aluminum parts, resulting in higher surface roughness (usually around 5.8Ra) and dull surface color, which will eventually affect the cast aluminum parts. Overall appearance standards and functional requirements of aluminum parts

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