Shot blast machine
Shot blast machine works exactly like sandblasting machine, the shot blast machine also look similar to sand blasting machine. The basic difference is that shot-blasting material is much more larger than sandblasting material. These shot blaster are really heavy and they deliver much larger kinetic impact on the surface of each shot, which can do even difficult job on even hard metals, on the other side sandblasting can only do a job on soft layers of paint or rust. Shot blasting is commonly used to make metal and grids sheets hard.
Structure of all shot blast machine is similar to the structure of sand blast machine they all consists of the same parts such as shot blaster nozzles through which shots are thrown, container for shot blasting material (any type of shots), propelling unit, which propels these shots (pressure pump or gravity wheel) and the main part is blast cabinet or it is called as booth as well, which keeps everything in a secure environment.
Concept of shot blast machine the same as of sand blast machine, there is no difference in the machines but the difference is the material, the effect it make on the surface and the fact that shots don’t raise dust. Shot blasting machine also contains some kind of recycle system which recycle the material, mechanism of recycle system is to feeds used shots back to the hopper or container which helps to keep maintenance expense lower.
The process and technique of shot blast machine is the same as sand blast machine except that shot pellets are used instead of sand. The results are different in shot blasting process compared to sand blasting; material used in shot blast machine is heavier and larger, yielding a far greater kinetic force so it deforms the surface powerfully. Shot blast machine is largely used for hardening the surfaces of metal in the industry.
Shot blast machine can be used to make the surface harder against physical stress as well as to make the surface smooth to remove any irregularities. Nature of shot blasting material is like this so it can be used to achieve above said output whereas a sand blast machine cannot be used for this purpose, a specially designed shot blast machine is used by the shot blasting process. Design is quite similar of both shot blasting machine and sand blaster however there is one difference that shot blasting machine and sand blaster are largely used in any industry.
Mobile shot blasting
Mobile shot blasting unit
When you want to get the job done on field, mobile shot blasting machine is your answer. Be it aircraft repair, tanker hull cleaning or suspension bridge maintenance, you are going to have to bring the media equipment with you.
Much akin to sandblaster machine, mobile shot blast machine uses abrasive media on-site for many purposes, such as removing rust, color and other dirt on surfaces. Mobile shot blasting is typically used to remove rust and clean dirt from vehicles (wheels and bodies), traffic lights, street lights, basically anything on the field that we cannot fit into a stationary shot blast machine.
Mobile shot blasting unit contains everything needed for the job, from media to nozzle. All you need is power outlet and there you go.
Sand blaster abrasive
Sand blaster abrasive is media which we use in conjunction iwth sand blater to strip off paint, rust and otehr unwanted things from surface.
There are many abrasive blasting media which are used fr specific things. Most commonly used is aliminum oxide which can be reused many times. Other abrasives are corn cob, glass grit, walnut shells and also steel shot.
Steel shots are also quite popular abrasive media for shot blasting. They can be reused over 1000 times which makes them must-have abrasive for shot blasting. They are also being qidely used for shot peening.
Nozzle for shot blasting
Shot blasting requires nozzle which is hard and abrasion resistant. That is why nozzle must be made from hard materials. All the airflow that flows through it really does it’s toll to any surface, especially with higher airflow.
Which eno you want depenfs on few elements, such as how fine job you want to make, how high airflow you want to sustain, type of abrasive you will use, which media you want to clean and so on.
Lower price shot blasting nozzle, which you use for shot blasting, are made from ceramic compound and are normally about half an inch in diameter and therefore ment for lower air flow but are easier manageable.
On other side we then have nozzle which is made from tungsten carbide, one of hardest materials in the worls. This one can have shorter diameter which gives more air flow trough it.
There are other materials used for nozzle, but htese two are more commonly used with sand blaster.
But don’t forget one thing. When buying nozzle keep in mind you need compatible air jet for it since two parts work in conjunction with each other.