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What Blast Media Should I Use In A Wet Blast Cabinet?

Choosing the correct abrasive media for wet blasting is very important because an inappropriate media choice will not provide the desired finish. It can not only cause a rework but in some cases may cause damage to the blasted surface.Selecting the correct abrasive media for a wet blast cabinet is important and it is worth spending some time on this. Noting down the component details, surface condition, abrasive media used, and the finish achieved and building up practical data will help when similar jobs come up again.

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What Blast Media Should I Use In A Wet Blast Cabinet?

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  1. WHAT BLAST MEDIA SHOULD I USE IN A WET BLAST CABINET? DIFFERENT ABRASIVE MEDIA THAT CAN BE USED IN A WET BLAST CABINET GARNET (ALMANDINE AND ALLUVIAL) Garnet is a type of gemstone and has good natural abrasive properties. Garnet has a sub-angular shape, Mohs hardness number 7 to 7.5, comes in different grit sizes and it can remove coatings, old paint, rust, and mill scale from metal surfaces and can work on hard metals also. CRUSHED GLASS Crushed glass has Mohs number of 5.5 to 7 and is good for wet blasting aluminum and steel. The crushed glass has an angular shape and forms a sharp anchor profile; however, selecting a proper grit size and blasting velocity can give you the required anchor profile/finish. GLASS BEADS A glass bead media consists of spherical glass particles and leaves a fine and polished finish on the blasted surface. The Mohs hardness of glass beads ranges from 5.5 to 6 and the particle size can be coarse to fine. ALUMINUM OXIDE The aluminum oxide has angular shaped particles; a Mohs hardness of 8 to 9 and the grit size of this media can be coarse to fine depending on the need. By varying the grit size and blasting velocity, aluminum oxide can be used for wet blasting hard metals (even with thin sections) . SODA BI-CARBONATE The soda bi-carbonate used for wet blasting is not the baking soda used in our kitchen. There are companies like Armex and Natrium that manufacture a variety of soda bi-carbonates specifically for the soda blasting process. CONTACT US Address : 1K/18 Beafield Road, Para Hills West SA 5096 Australia Phone : 1300 822 569 Email : sales@quantumblast.com.au Website : www.quantumblast.com.au

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