Curved vs. Straight shot blasting wheel blades
Curved vs. Straight shot blasting wheel blades

 We can find a variety of different blasting wheels on the market, they can be different sizes and  diameters, spare parts of different materials, blades different shapes, etc.. Based on so many  options it is hard for the user to choose which wheel will bring real value to the processing. By  developing, Gostol TST engineers always look from the users’ perspective, based on their  demands and wishes is how ir sm@rt blast wheel was created. With all of its numerous multi-  option selection of materials and applications ir sm@rt blast wheel stands out of the market  average and is positioned alongside with the other top brands.

Besides three different material qualities of spare parts, which all of them are replaceable with each other, user can also choose straight (i) or curved (r) blades. Which one to choose curved or straight can be sometimes difficult and we recommend to have a discussion with producers’ experts before purchase. Shot blasting with straight or curved blades accelerates the abrasive particle with the capture and slipping of the particle on the blade of quickly rotating blasting wheel. It is known that curved blades have higher efficiency of throwing speed, this means that at the same rotational speed of wheel the particle is additionally accelerated for app. 30 % and thereby energy of the same particle is increased for approx. 70%. We recommend the use of curved blades for blasting from longer distance, when operator is using more reflected abrasive, or by blasting angles and corners which are more difficult to reach as well as for workpieces with complex formations. Shorter straight blades provide lower outlet speed but higher mass flow at the same motor power. Shot blasting with curved or straight blades is in principle the same, the difference is in outlet speed and the mass flow.

Some producers also say that is less wear out on curved blades, this depends which kind of abrasive (type and hardness) we use and the material type of the blades, but we have to take in consideration also from which materials control cages and impellers are made of. More about the ir sm@rt blast wheel spare parts materials, their compatibility, which spare parts are suitable for different applications etc. we will describe in the next article. Don´t miss it out and subscribe to Gostol TST news