Tips in choosing the best air compressor for sandblasting
Sandblasting is the act of cleaning a surface or area at high velocity using tiny bits of materials. Sand was commonly used for sandblasting. But, due to the outbreak of lung disease commonly known as silicosis, Sandblasters are now using small or relatively uniform particles such as slags, walnut shells and the like. Air compressor is just one of the different parts of sandblasting set-up. This refers to anything that will increase the amount of air in certain container. The increased pressure of air eventually creates force use for blasting or cleaning a surface or the like. And due to the abundance of options of air compressor available in the market, good working knowledge about air compressor can help buyers buy for the best compressor for sandblasting.
Let it be noted that air compressor becomes a leading commodity among compressors due to its safe, clean, flexible and convenient features. Air compressors come in types and even sizes as well as their capacity.
Reciprocating or Piston compressors
The most common air compressor in the market today if ratings and online air compressor reviews (see here) are any thing to go by. It is known for its positive displacement works by filling an air chamber with air then reducing the chamber’s volume. Reciprocating compressors are ideal for internal combustion engine in a reverse process. The good thing for this kind of compressor is its simple in design, lower initial cost, easy to install and no need to use oil carryover. And it uses large range of horsepower. However, this type of air compressor has some known disadvantages like, most of the reciprocating or piston compressors do not run at full capacity of the time and are prone to vibration problems.
It is also practical to compare this type of air compressor to Rotary Screw Compressor to evaluate the best air compressor for sandblasting.
Rotary Screw Compressor
This type of compressor becomes functional by means of air filling the void between two helical mated screws and their housing. The increase of air pressure is achieved by the reduced volume caused by the turning on of the two helical screws. To achieved the desired cooling, lubrication and seal between screws, oil injected into the bearing and compression area. Like the reciprocating compressor, it has both the advantages and disadvantages. It has almost the same advantages to the reciprocating compressor but more of the disadvantages. These include the its limited air end life, high rotational speeds, shorter life expectancy, a lot of oil carryover caused by the injection of oil and its difficulty to manage in dirty environments.
Another type which buyer can compare with is the Rotary Vane Compressor. It has also the positive displacement compressor. Its compressor pump has the rotor, stator, and eight blades. Comparing this compressor with the Rotary Screw compressor, it has long life air end and is resistant to dirty environments. However, it cannot handle high pressure of over 200 psi.
Now, evaluating these types of air compressor, buyers can surely pick for the best air compressor for sandblasting.