Tag Archives: Blast media

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.

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

Air Blasting Tip 3 – Choose The Smallest Blast Media Size That Will Do What Is Required

                  

Smaller sized air blast medias will saturate the surface fastest.

Either venturie / suction or pressurised delivery systems are capable of delivering many more media particulates per second.

Continue reading Air Blasting Tip 3 – Choose The Smallest Blast Media Size That Will Do What Is Required

Air Blasting Tip 2 – Select The Correct Air Pressure To Deliver The Chosen Media And Optimise Both Work Speed And Costs

 

If glass beads are chosen as a beadblast process, they are initially round and have no cutting edges, they are relatively soft but still friable. If they break on impact, the two or more particles now have potential cutting edges.

Continue reading Air Blasting Tip 2 – Select The Correct Air Pressure To Deliver The Chosen Media And Optimise Both Work Speed And Costs

Shot Blast Tip 5 – Monitor Your Abrasive Removal Size In Your Shot Blast Machine

 

The blast media in your shot blast machine  is provided as a “working mix” to achieve your required process.  After a period of blast time it will not perform to the required standard as it has now reduced in size. If it remains in your machine, you can expect to increase the wear and degradation of the blast wheel components together with the recovery system of your machine.  It will increase production times and power consumption because of the longer blast duration required.  An efficient separator will remove unwanted contaminants and undersized media without carrying out good, usable abrasive. It is vital you regularly check the efficiency of your separator and the size at which media, fines and dust are being removed.

Click to read Tip No. 6 Regularly Check Your Wear Parts

 

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

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

 

Shot Blast Tip 3 – Check That The Abrasive Condition Is Good In Your Shot Blast Machine

As abrasive is recycled and re-used within your shot blast machine it is affected by impact. It will gradually reduce  in size as a result of a combination of: splintering, spalling (peeling), deformation (i.e. rounding) or smoothing (i.e. grit becoming blunt).

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Shot Blast Tip 2 – Regularly Check That Your Abrasive Working Mix is Correct In Your Shot Blast Machine

Working Mix 2

Irrespective of the starting size of your media in your blast machine (i.e. S110, S230, etc…) within a very short time that media will reduce in size as a result of abrasion, deformation as a result of impact (i.e. rounding) and/or fracture/splintering. This will cause a drop in the abrasive level which needs to be topped up with new media (as per tip 1).

Continue reading Shot Blast Tip 2 – Regularly Check That Your Abrasive Working Mix is Correct In Your Shot Blast Machine

Shot Blast Tip 1 – Regularly Check That You Have Enough Abrasive In Your Shot Blast Machine

Standard (wheel) shot blasting machines It is critical you maintain a balanced abrasive particle size to obtain a consistent, quality finish. When a machine is first installed it should be filled with new abrasive constituting a “working mix” of different sizes of media.

Continue reading Shot Blast Tip 1 – Regularly Check That You Have Enough Abrasive In Your Shot Blast Machine