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Surface Preparation
Published in Karan Sotoodeh, Coating Application for Piping, Valves and Actuators in Offshore Oil and Gas Industry, 2023
Abrasive blasting, also called sandblasting or shot blasting, is a generic term for the high-speed application of abrasive materials against the surface of a metal to smooth a rough surface, roughen a smooth surface, shape a surface or remove surface contaminants and metal dust for better coating adhesion. Sandblasting can eliminate substances such as rust, paint, oil, etc. ISO 8504-2 addresses the abrasive blast cleaning method of surface preparation. Decreasing the density of peaks or areas of roughness on a metal surface in general results in better adhesion between the coating and metal surface. Abrasive blasting or sandblasting can be used to remove the old paint or corrosive products from the metal surface. The important point is that the abrasives themselves should be clean and free from contamination. Figure 2.34 illustrates the surface of a metal specimen before and after sandblasting.
Fabrication Techniques for Capacitive Silicon Resonators
Published in Nguyen Van Toan, Takahito Ono, Capacitive Silicon Resonators, 2019
Sandblasting is a technique in which a particle jet is directed toward a target (sample) for material removal by mechanical erosion via the impingement of high velocity abrasive particles. The sandblast process can be used for etching various materials such as glass [6], ceramics [7] (e.g., low temperature co-fired ceramics [LTCC]), and silicon.
Investigation of influencing factors of wear in a sandblasting machine by CFD-DEM coupling
Published in Particulate Science and Technology, 2022
Si Huang, Zirui Tang, Jiaxing Huang, Chenxi Ou, Zhiquan Hui
Sandblasting machines are widely applied in chemical, manufacturing, civil and other industries (Speak 2007; Protasov, Linden, and Gross 2009; Valikhani et al. 2021), to alter the surface properties of materials by spraying abrasive sands forced by compressed air. However, sandblasting machines also suffer from erosion wear during operation. A sandblasting machine usually consists of a pressure tank and a blaster gun. The parts inside the tank are exposed to continuous collision and friction with abrasive sand particles, leading to the thinning of the wall of the tank and pipe, causing severe damage to the equipment and shortening the equipment’s service life.