Getting castings and forgings ready for the subsequent processing steps presents some of the toughest surface finishing challenges. Shot blasting machines can handle all of these tasks from removing residual sand, casting shells, flashing, die marks, or scale. Whether cast iron, steel, stainless steel, super alloys, titanium, aluminum, zinc, or magnesium, the comprehensive portfolio of Rosler Metal Finishing blasting systems for the foundry industry enables the optimal process for any requirement.
Shot blasting is an essential part of most forge
and foundry operations and has been used since the late 1800s. This specialized
surface finishing process throws small metal (or mineral) pellets, called blast
media, onto the surface of a work piece at incredibly high speeds, ranging from
200-800 feet per second. The impact on the work pieces from this process is
what blasts the contaminants from the parts and produces the desired surface
When properly applied prior to finishing, blasting
achieves three key aspects of the finishing process:
Continue reading Forge & Foundry, Part 1 – Shot Blasting Systems
- Cleans and descales
- Creates a uniform
texture on the part and blends the surface
- Enhances paint adhesion
Shot blasting is a specialized surface finishing process where small metal (or mineral) pellets, called blast media, are thrown onto the surface of a work piece at incredibly high speeds, ranging from 200-800 feet per second. The impact on the work pieces from this process is what produces the desired surface finishing effect.
Shot blasting can help achieve surface cleaning, surface preparation, descaling, deburring, deflashing, and shot peening.
The process components of a shot blasting system include a shot blast machine, raw and finished work pieces, blast media, dust, and other byproducts.
The two most common types of shot blast machines are turbine blasting and air blasting.
Continue reading Shot Blasting 101
In addition to the pro and con evaluation of air blasting and turbine lasting found in our previous blog, these two methods can also be compared in terms of throwing velocity, applications, and industries.
In terms of throwing velocity. Media thrown by turbines immediately start losing speed the moment that the turbine blade releases it, producing higher intensity blast results closer to the turbine. Larger shot retains its speed better over a distance and is commonly used to maintain intensity while creating a larger blast pattern by positioning the turbine(s) farther away. In contrast, media thrown by air nozzles will continue to accelerate for the first 100-300 mm outside of the nozzle depending on blast pressure and media size and density until the compressed air fully dissipates to the ambient environment, meaning that your best blast results occur a distance away from the nozzle.
Continue reading Air versus Turbine – Balancing Blasting Capabilities and Outcomes, Part 2
Blasting processes for surface finishing vary according to the size, quantity, composition, and desired finish of the work pieces in need of surface preparation. Air blasting and turbine blasting are two of the more common types of blasting. While there is some overlap between the two methods, each carries its own unique attributes and drawbacks.
When comparing these two blast methods, the number one thing to keep in mind is precision versus bulk. Air blasting provides precision surface preparation using a much smaller blast pattern compared to turbine blasting, which delivers large quantities of media over a wide blast pattern, thereby making it ideal for blasting large quantities of parts or larger individual parts.
Continue reading Air Versus Turbine – Balancing Blasting Capabilities and Outcomes, Part 1
“Finding a Better Way” isn’t just a tagline at Rosler Metal Finishing; it’s a mission. A recent preservation line developed by Rosler Germany is no exception.
The creation of a 740-foot-long (225 meters) shot blasting line with straightening equipment is the largest equipment project Rosler Germany has ever undertaken. Commissioned by Meyer Shipyard in Turku, Finland, the state-of-the-art equipment will be used to prepare and finish materials for building cruise ships.
Read more about this record setting preservation line
With the revolutionary Gamma G turbine, Rosler has set a new milestone in continual turbine development. It is the most maintenance-friendly turbine in the world, it can be easily installed or retrofitted into a great range of systems, and has a unique price-performance ratio.
Featuring Y-shaped throwing blades made of forged tool steel for high durability. Since both sides of the throwing blades can be utilized, the cost for wear parts can be drastically reduced. Depending on the abrasive used, throwing blades can be used up to three times longer.
Read more about Rosler’s Gamma G turbines