Sandblasting: The process of cleaning and roughening the baseboard surface by using the impact of high-speed sand flow. The compressed air is used as the high-speed power to form a high-speed jet beam to spray the materials (copper ore, quartz sand, emery, iron sand…) to the workpiece surface. So as to change the appearance or shape of the outer surface of the workpiece.
The workpiece surface can obtain different levels of cleanliness and roughness due to the impact and cutting effect. Thus, sandblasting improves the mechanical properties and fatigue resistance of the workpiece surface, increases the adhesion between the workpiece and the coating, prolongs the durability of the coating film, and it is also conducive to the decoration of the coating.. (“Science China”, Examined and verified by Jiang Changsheng, Professor in Southwest University)
Technique Process:
It usually contains four sections: abrasive, equipment, set up, protection.
There are several abrasive options: mineral, soda, glass.
- If you are looking to remove rust or old paint, then going for mineral sand is a good option.The mineral sand works efficiently on rust and it is also suitable for removing weathered coatings and scale.
- If you are using the sandblaster over any sensitive areas, then the use of abrasive like plastic or soda will be better. For all the areas that are made of plastic or contain electrical components, it is always better to use a light abrasive.
- If you are looking to work for the smooth finish, the use of glass beads is always a better option. Glass beads are a hard material as well as the best material to remove rust from metal without even roughing the surface underneath. It is suitable for cosmetic materials like a car or over the tilings.
Different equipments for different use.
- A cabinet blaster will be a good option for a smaller purpose. Cabinet blasters are small, enclosed sandblasters that have gloves and a nozzle built in. The top of a cabinet blaster has a window so you can see what you’re working on.
- Pick a portable blaster for large jobs. If you’re working outdoors or on a piece of material that is too large to fit into a cabinet blaster, use a portable pressure blaster. This can be moved or maintained in any location for an easier, on-the-go sandblasting treatment.
Use a compressor with a minimum of 80 PSI at 5 cubic feet per minute (CFM). A consistent pressure is needed for you to use a sandblaster properly. If it is too strong, it could damage your material, but if it’s too weak, it won’t work efficiently.
.
Pick The Right Nozzle For The Job- Depending on the job, you must always select the suitable shape of the nozzle:
- Pick up the nozzle with the most narrow opening to have the most concentrated stream.
- For a concentrated stream of abrasive, select a straight bore nozzle. Whereas, a venture abrasive will spread out the abrasive more. But it helps you to get a more uniform distribution of particles.
Select A Shorter Hose To Maximize The Pressure: It is always better to keep your compressor and your sandblaster near. It will help the air to travel for a shorter distance.
Put on eye and ear protection, gloves, and a respirator.
Besides, there is cute and direct guidance to show the process of sandblasting on WikiHow. The name of the article is called HOW TO SAND BLAST. Easily check out by clicking the bold text. It has a comic image for every step, which is quite helpful to understand.
Bibliography:
- “Science China”, Scientific entries and application project. Examined and verified by Jiang Changsheng, Professor in Southwest University. 2012.12.
- “How to Sandblast”. READ UNBIASED. https://readunbiased.com/how-to-sandblast/. 2021.5.12.
- “How to Sand Blast” on WikiHow. https://www.wikihow.com/Sand-Blast
