Shot blasting is a surface finishing technique in which the surface of an object is impacting quickly with a controlled stream of abrasive shot material. Shot blasting is also used to remove burrs, scale, and rust that may affect the integrity, appearance or definition of the part. Shot Blasting may also prepare the surface of a part for coating by removing surface contaminants and provide a surface profile for increased coating adhesion.
Shot blasting differs from shot peening, where compressive stresses are induced on the surface of a part to extend its fatigue life, increase the strength the part strength, or prevent fretting.
Shot Blasting Machine Mainly Consist of Six Basic Parts:
• Blast wheel
• Cabinet
• Elevator
• Work handling mechanism
• Separator
• Dust collector
The Assembling Process of the Shot Blasting Machine:
1. Preparations before Assembling the Shot Blasting Machine
The assemblers should study the following details or carefully clarify the following questions before assembling the shot blasting machine. Study the general assembly drawings, the process files, the technical materials, the structure of the Shot blasting machine, the work piece to be cleaned by the shot blasting machine, the number of blasting wheels, the size of the dust collector, the materials and sizes of the back plate, the functions of the parts of the shot blasting machine, the connection methods and the relationships between the different parts. Prepare all detailed drawings of the parts of the blasting machine. Remove all required parts from the warehouse according to the drawings and prepare all the necessary tools. Perform quality controls on the parts to be assembled and scraped for parts with special requirements.
2. The Assembling Work of the Shot Blasting Machine
The assembly of the shot blasting machine should be done step by step. The complex and separate parts such as the blast wheel, the chamber, the dust collector of the shot blasting machine, the elevator of the shot blasting machine, etc can be assembled first. Assemble all the assembled parts in an entire blasting machine at the end.
