Air Blasting Tip 4 – Remember That A Small Heavy / Dense Media Particles Will Gain Much More Energy Than A Large Light Particle

 

Heavier / dense blast media may need a pressure blast system consideration to enable sufficient media flow to be achieved.  As described in the pressure blast cabinets and systems introduction Part 2  heavier and denser medias may not be capable of being delivered by a venturie / suction system because it requires sufficient energy to bring the blast media up the delivery tube to the blast gun and the system becomes inadequate.

The density/weight of a blast media must be taken into account when calculating both the volume and pressure of air required. For larger blast media (i.e. S330 Shot or G25 Grit and larger) with a high density, the ratio of air to blast media will change (i.e. more air, less media) to enable the air to carry and suspend this dense media to the delivery point (the blast nozzle).
Each particle of dense blast media is capable then of picking up momentum from the air speed movement and when combined with its own mass (size/weight), will be delivered through the nozzle to the work with much more energy.

Conversely, lighter, less dense blast media such as finer plastics, fine aluminas or finer glass bead of 100- 205 micron require less volume and pressure to enable the delivery to perform well.  In these cases, the air to blast media ratio will be balanced to a higher percentage proportion of blast media resulting in a quicker saturation/coverage of the surface.

 

Click to read Tip No. 5 Media flow regulation requires to be optimized on a pressure system

 

For more information on Shot Blasting please visit www.rosler.com

Haydn Kitchen New APost written by
Haydn Kitchen
Shot Blasting Technical Manager

This entry was posted in Air Blasting Tips and tagged , . Bookmark the permalink.

2 Responses to Air Blasting Tip 4 – Remember That A Small Heavy / Dense Media Particles Will Gain Much More Energy Than A Large Light Particle

  1. Pingback: Air Blasting Tip No. 3 | roslerblog

  2. Pingback: The 9 critical points to check you get the most out of your air blast machine and process | roslerblog

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s