Shot Blasting vs Shot Peening vs Hand Blasting
Shot blasting, shot peening and hand blasting are often mistaken for one another because of their similar names and because they are often used in the same industries. Despite their similarties each of these methods serve a different purpose in the metal finishing industry. This article will take you through the process of each metal finishing service to help you choose which might be right for you. If you're looking for a metal finishing company in southern Ontario contact Latem Industries today!
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Shot blasting is the process by which tiny metal or glass shot is used to clean, restore, or prepare metal. This process is done prior to metal finishing, coating, or painting and it's also used quite often to remove corrosion or tarnished areas. The process of shot blasting is done through a wheel blasting method. The shot is funneled into a turbine, which accelerates the shot to the desired speed. At Latem we use three common sizes of shot, S230, S70 and GH18. Using this shot, Latem can achieve just about any spec requirement as indicated on your engineered drawing.
Shot blasting is an abrasive process, which means that tiny pieces of the original product are chipped away in order to give the desired finish. Beyond the finishing aspect of shot blasting, parts of the product are also conditioned through the creation of a compressive stress layer, which makes for a more durable product.
Shot peening is a similar process to shot blasting, the main difference being that peening relies on the plasticity of the product, where as blasting relies on its abrasive properties. Plasticity is the ability of the product to be bent or to be pounded into a different shape which is highly important in this process. With peening the product is bombarded with shot, but instead of the shot being used to give an abrasive finish, it is used to pound and bend the product into the desired shape and finish. Peening removes less metal from the original product compared to blasting, and peening can also give a more pronounced finish. Some componants which are most often peened include:
- Gear Parts
- Cams and Camshafts
- Clutch Springs
- Connecting Rods
- Leaf and Suspension Springs
- Rock Drills
- Turbine Blades
Hand blasting is similar in process to shot blasting, but instead of a turbine being used to accelerate the shot, compressed air is used. Both shot and hand blasting prepare the metal by removing a thin outer layer, revealing the metal beneath. Sand or another abrasive element is used in hand blasting to prepare the product. A chipping hammer is sometimes also used during the hand blasting process.
All three processes are used for similar activities. They very in terms of finish, and power. Some of the finishing processes that are possible are:
- Sand removal
- Rust removal
- Surface Finishing of Castings
What can you do for me at Latem Industries
At Latem Industries, we specialize in metal polishing, ultrasonic metal cleaning, vibratory metal finishing, machine tumbling, shot blasting, and metal part washing processes for your metal finishing needs. As an ISO registered company, we pride ourselves on supplying every industry with top quality products and offering expert technical knowledge and metal finishing solutions. Our metal polishing techniques are meticulous in both their deburring and their polishing capabilities. Our processes, in combination with the right media, deliver cutting edge results to virtually any metal surface. The range of options to which our equipment can perform is almost as impressive as the finished product. To get a free, no obligation assessment of what we could do for your project click here.
Whether you are developing a new product or looking to improve an existing one, let our 35 years of experience work for you. Contact us today to get a free, no obligation quote on your project.
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