A shot blasting machine is an equipment to treat metal for polishing, repainting and cleaning away debris from the surface. Shot blasting incurs collision of solid particles with target surface by forceful compression causing the area to be scraped off of the outermost layer of contaminants like debris, grease, rust or old dried paint. After a treatment, the area becomes a smooth surface without impurities.
Well… this is a complete description in itself but being an engineering product, there are many facets to a shot blasting machine that still need to be disclosed before you wish to purchase one.
Buying a sandblasting machine without much knowledge of its working, capacity, power generating effects on surface, surface area coverage and many others, you will soon be repenting for about the equipment as a worthless investment. It is prudent to take the buying decision only after getting to know every aspect of the machine's output, air compression, material to be treated. It all points to what type of objective do you want the machine to fulfill before its purchase.
Select the machine for the type of business you have. If you want a shot blaster for scraping off paint from cars and thin metal sheets, then a low power machine will be a great fit. So choosing the machine on the basis of type and thickness of material is important else a high power blaster will eat away your car metal since each machine has different surface preparation result.
A commercial establishment can go for faster cleaning and get a powerful shot equipment to complete assignments faster that are more labor intensive and need treatment on thick metals, engineering products, etc. Check for the type of power, air compression, width coverage, etc for your needs.
Machine selection becomes important if your work requires strenuous activity like grit blasting or shot peening. While softer media has low impact on the inner surface, harder abrasives pass through the wall and hose pipe of the machine shortening its life span. If you regularly work with such media, then buy longlasting carbide nozzles for longer operations and machine life. Ensure that you are able to clean the machine efficiently so it doesn't retain moisture and gives a smoother working.
Finally, be specific about the budget and what best can you afford within your range. Getting a good system with a little more money is worthy but if it ruins your pocket, then look for the best option within your caliber. An EMI if possible will be fruitful otherwise, you can also get subcontracting instead of a purchase.
Knowledge is the best option to get a machine that suits your every condition. Wasting money on a very cheap machine means you compromise on quality and machine life. You can ask a good machine manufacturer of its features and compare it with another company make because a healthy discussion with a shot blasting manufacturer will clarify many questions and doubts like its capacity, working, installation, spare parts required after operation, life of machine and so on.
Get to know about different shot blasting machines and what is their performance parameter. Don’t be hast in the decision but you must make a wise choice to buy a shot blasting machine only after you know the real facts about a shot blasting machine because investment is yours and so is your business!