From surface cleaning to surface coating preparation and surface finishing, abrasive blasting has many different applications in the industrial sector. The blasting process generally involves using a stream of high-speed abrasive media to clean, prep or finish a surface. Quality control before, during and after the blasting operations is vital for achieving the desired results.
Here are three important things to review before getting started.
In abrasive blasting, grit size refers to the size of individual grains or particles of the abrasive media. The larger the grit size, the deeper the cuts and profiles produced. The major drawback of large abrasives is that they tend to cause more material distortion than smaller grains with similar composition and shape.
When choosing abrasive media for your blasting job, be sure to match the grit size to the surface profile desired. This is vital for achieving a clean surface, which is required for optimal coating performance.
Although the lack of surface profile can hurt the quality of coating adhesion, more profile is also undesirable. Aside from triggering premature coating failure and accelerating the coating process, excess profile means using more paint to coat surfaces.
The hardness of the abrasive media also affects the quality of the blasting process. It impacts breakdown rates and the depth of surface profiles. Generally speaking, hard abrasives produce deeper profiles and cut faster than softer choices.
Where cutting speed isn't a priority and deep surface profiles aren't required, gentler abrasives can be used.
It is important to point out that harder abrasives might not deliver optimal profile depths. These abrasives may exhibit a shorter residence time on the surface than softer abrasives being blasted at the same pressure.
Nozzle pressure impacts blasting speed and performance. High-pressure nozzles deliver faster cutting action and create deeper profiles on surfaces than lower-pressure nozzles. The nozzles attached to blasting equipment are what regulate the speed at which abrasives hitting on surfaces are propelled. Generally, larger-diameter nozzles deliver lower blasting pressures, whereas smaller nozzles lead to higher blast pressures.
Choosing a nozzle with an internal diameter that's too big will lead to a decrease in working pressure. Conversely, selecting a nozzle that's too small means not taking full advantage of the blasting potential of the blasting equipment.
Getting the blast pressure right is critically important for achieving the desired blasting results.
If you need expert help with your abrasive blasting job, you can contact abrasive blasting professionals near you.
To get the right plastic products, your business needs to find the right manufacturer and supplier. If you've never done this before, then choosing the right company to work with can be a headache. I'm Mike. I worked in industrial procurement before I retired and I set up this blog to help people get the information they need when they're working with plastics companies. My blogs will hopefully help you understand more about plastics manufacturing and the related stuff that's important to any business now, like recyclability and green production techniques. Hope it's interesting reading and makes it easier for you to produce the products you need!