Okay let’s talk about the sandblasting. We do it before powdercoating in most of the cases we see where coatings of oil and nasty stuff don’t require a metal chemical bath.
Do you have an old piece of metal object or material that you would like to freshen up with a new powder coating? With all types of metals, one does not simply go ahead and apply a layer of powder coating of the metal’s surface. There are certain steps that need to be done to prepare and clean the metals before powder coating to produce long-lasting results.
If you would like to have your older metals that have some corrosion and rust to be powder coated to give it a new look, pretreating them is very important. One important part of pre-treating or preparing metals for powder coating is through sandblasting.
In this article, we will discuss the benefits of having your metal pieces and parts pre treated with sandblasting before being powder coated.
What is Sandblasting?
Sandblasting is a form of metal preparation where very fine bits of materials like sand are propelled at a high-velocity to clean or etch a surface. While the term implies sand as the material used, other small and uniform particles like steel grit, walnut shells, powdered abrasives, silica sand, and copper slag are now mostly used. All types of sandblasters use a pressurized gun to produce the high-powered pressure that will shoot out the sand particles towards the metal surface at a fast pace. This fast and high-pressure movement is what makes sandblasting effective in removing all types of dirt on a metal surface.
Sandblasting is a common process of preparing various types and forms of metal before applying a layer of powder coating since it effectively cleans the surface well. As a metal cleaning process, sandblasting prepares the surface of the metal by removing different types of dirt like oils, rust, and oxidation. When these types of dirt are not removed before applying a coat of paint, cracks and bubbles may occur even after just a short period of time.
Furthermore, when a metal has been coated with paint before and you would like to apply a new layer to make it look new again, sandblasting is the best way to wash off this old layer to create a smoother surface. This is the reason why sandblasting is done to prepare all types of metal parts and even larger structures like bridges and ships.
What are the Benefits of Sandblasting Before Powder Coating?
As we have discussed earlier, sandblasting is a key process done to prepare all types and forms of metal surfaces before a powder coating is applied. Sandblasting metals before applying powder coating can provide the following benefits:
Sandblasting is meant to remove all types of corrosion, oil, heavy rust, and oxides present in the metal which cannot be easily removed by other cleaning agents. When these types of dirt are not removed before applying powder coating, cracks and bubbles may appear even after just a short period of time. This is because the dust, oil, and oxides are still present underneath the new layer of powder coating and can greatly affect the appearance and longevity of the powder coating applied If your metal has been previously coated or painted on, sandblasting effectively strips off this old layer of coating to prepare for the new layer to be added on. In the same way that dirt should be removed before applying powder coating, the old layer of paint or coating should also be thoroughly removed. Removing the old layer of paint will ensure that the new layer of powder coating will stick on to the metal surface better. Sandblasting creates an even surface on the metal to prevent moisture and cracks from occurring after the powder coating has been applied. While simple sanding can be good for metals that have a flat surface, there are numerous metals that have varying curves and angles which cannot be easily surfaced evenly. Sandblasting can effectively even out the surface of any metal shape to help powder coating apply better. In addition to cleaning the surface of the metal, sandblasting also makes the metal become more adhesive for powder coating application by roughing up the metal’s surface. Most metals have a smooth and shiny surface which can make it difficult for paint and powder coating to stick properly. With sandblasting, the surface becomes rough to better facilitate adhesiveness before powder coating is applied. A more uniform and even look of powder coating is achieved when metals are sandblasted beforehand. Since sandblasting evens out the surface of the metal, it can provide a smoother and more evened out surface or the powder coating to be applied on.
Sandblasting is a faster and cost-effective way of cleaning and preparing metals before they are applied with powder coating. For numerous and larger projects that need to be prepared for powder coating, sandblasting is easier and faster since it employs the use of small particles that are propelled at a high velocity towards the surface. This fast propelling action creates an evenly spread out sandy surface on the metal without the need for spending a long period of time on a single surface area. Sandblasting can be repeatedly done on a metal surface or object every time it needs to be applied with a new layer of powder coating. This makes sandblasting an economical choice since it will not affect the metal’s structure while also letting you reuse and freshen up the look of your metal objects whenever you want.
It doesn’t matter whether you have old or new metals that you would like to be powder coated as long as you have them sandblasted first. In doing so, you can be assured that the layer of powder coating that is applied to the metal surfaces of your railings, wheels, fences, and other materials will last long and look good.
If you have a metal material, surface, or object that you would want to be powder coated, you should look for a company that can also provide you with sandblasting surfaces. In doing so, you can be assured that you will be getting the high-quality service that you are paying for.