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Some guidelines of garnet sands abrasive for blasting
Here are some guidlines for users when garnet sands blasting, more information, just contact Teldiay Abrasives at any time.
| 1. |
Ensure the nozzle air pressure is 95-100psi (measured at the nozzle). Note: for every 1psi under 100psi, efficiency is reduced by 1.5%, i.e. at 70psi you are blasting at 55% efficiency. |
| 2. |
Check nozzle pressure frequently with a hypodermic needle gauge |
| 3. |
Check nozzle frequently for wear and replace when worn to ensure optimum productivity is maintained. |
| 4. |
Check all blast pot fittings, hoses and hose couplings, both air and air/abrasive and repair anything that are faulty immediately. Any air leak will cause a loss in pressure at the nozzle. |
| 5. |
Use an efficient moisture removal system to prevent pressure drop. |
| 6. |
Fit an abrasive valve that can accurately meter the abrasive flow to ensure correct air/abrasive mix in the blast hose as accurate abrasive metering is very important. |
| 7. |
Ensure all blast pots are supplied by an air hose that has a minimum id of 40mm (1 1/2") preferably 50mm (2"). This hose must be fitted with non-restrictive coupling fittings. |
| 8. | The air piping on your blast pot must be a minimum of 32mm id (1 1/4"). Be sure that full port ball valves are used on the choke valve. Do not use reduced port valves anywhere in the system as a pressure drop will occur because of restricted air flow through the ball valve. |