Category Archives: Shot Blasting

Equipment Investment Doubles Work Piece Longevity at Andersen Steel

Andersen Steel produces agricultural equipment including grubbers, front packers, and stubble tillers equipped with vibration tines for soil cultivation. Their equipment is exposed to extreme loads, causing decreased wear life of parts including the tines.

Made using specially arched rolled steel at the company’s Poland plant, Andersen Steel tasked engineers at Rosler with finding a better way to process the tines and improve their wear life. We delivered a solution in the form of two identical machines for blast cleaning and shot peening.

Delivering a Solution

Compared to flat steel, the rounded edges of the material Andersen uses prevent small cracks from forming during the shaping process. The work pieces pass through a blast machine to remove mill scale and other contaminants before shot peening to further improve their wear resistance.

For these dual shot blasting requirements, Rosler suggested two identical Rosler RHBD 13/18 K hanger machines. Successful blasting trials in a Rosler test center helped Andersen realize the advantages of purchasing these Rosler machines by demonstrating that shot peening the work pieces doubled the uptime of the tines.

Continue reading Equipment Investment Doubles Work Piece Longevity at Andersen Steel

Surface Preparation Standards, Part 1 – Evaluating Surfaces Throughout Finishing Processes

Surface preparation can account for up to 40 percent of structural steel painting and repainting jobs and the life of anti‐corrosion coatings on a steel surface largely depend on how thoroughly the surface was prepared before painting.

At Rosler, we have extensive experience evaluating structural steel surfaces for coating before and after shot blasting. This knowledge of surface preparation standards and the widely used ISO and SSPC standards guide us in developing systems to expertly prepare and repair structural steel throughout its lifespan.

The Standards

Evaluating rust and mill scale pre- and post-shot blasting is a must. It is important to clearly specify the quality of the surface prior to preparation as well as the surface conditions after preparation. As a result, standards were developed to visually assess the initial surface conditions and the quality of the required surface preparation relative to the initial steel surface conditions.

The dominant and widely used standards for evaluating rust and mill scale are ISO 8501‐1:2007 (based on the Swedish Standard SIS 05 59 00) and the SSPC (Steel Structures Painting Council). While different in some minor details, these standards are practically identical.

Continue reading Surface Preparation Standards, Part 1 – Evaluating Surfaces Throughout Finishing Processes

Wet Blasting Equipment & Media, Part 2 – Technical Components Combine for Systematic Success

Wet blasting technology lends itself to a variety of processes and industries. From applying cosmetic (anti-glare) finishes and surface smoothing to deburring, de-powdering, decontaminating, and cleaning after casting, welding, and additive manufacturing, wet blasting has many capabilities.

Rosler has decades of worldwide experience developing technology and machines customized to each customer’s unique challenges and demands. Each solution we deliver is innovatively designed around core wet blasting components and calibrated to your work piece with carefully selected media and tested process parameters.

Basics Components

Wet Blast Principle Diagram

Regardless of their uses, all Rosler wet blasting machines start with a core group of components. While customized options and accessories can be added, these systems typically include 10 key components.

Continue reading Wet Blasting Equipment & Media, Part 2 – Technical Components Combine for Systematic Success

Wet Blasting Equipment & Media, Part 1 – Machines Range in Complexity, Uses

Because of its many technical advantages and versatility, wet blasting is the fastest-growing segment in the field of shot blasting.

As with dry blasting, the available scope of wet blasting machinery ranges from simple, low-cost blast cabinets to sophisticated, partially or fully automated systems. Customers can choose between a wide spectrum of standard wet blasting equipment, however, for certain applications, special custom-engineered systems may offer the most efficient and cost-effective solution.

The machine type is usually determined by the processing task, the size and shape of the work pieces, and the desired degree of automation. Frequently, multi-axis robots are used for work piece handling or guiding the blast gun movement.

Rosler has extensive experience in wet blasting technology and the development of customized solutions. We have even developed the Rosler PureFinish® system for cleaning stainless steel components for the chemical, food, and pharmaceutical industries through wet blasting. This system cleans the work piece surface while facilitating cleaning, sterilization, and prohibiting bacterial growth.

Learn more about common types of wet blasting systems and examples of machine use for a glimpse into the technical capabilities wet blasting offers.

Continue reading Wet Blasting Equipment & Media, Part 1 – Machines Range in Complexity, Uses

Shot Blasting, Peening Offer Aerospace Advantages

Critical aerospace components require first-class surface treatment. From engines, fuselage, wings, and landing gear to seats, gears, propellers, blades, fasteners and tanks for fuel, water, and waste, Rosler has industry experience and expertise.

While mass finishing and shot blasting methods are equally useful to manufacturers of new components and in the overhaul and repair of existing components, shot peening – a particular type of shot blasting – is especially advantageous for aerospace work pieces thanks to its ability to provide surface finishing and create internal compressive stress for improved component life.

Shot Blasting Capabilities

Rosler’s shot blasting technology meets the strict surface finishing requirements predicated by tight tolerances for safety and longevity. This impact-based process propels small metal or mineral pellets onto a work surface at speeds of 200-800 feet per second.

Desired finishes including cleaning, texturing, removal of or preparation for coating, and peening can be pinpointed to specific areas of a given work piece as well as the entirety of large, structural components.

Continue reading Shot Blasting, Peening Offer Aerospace Advantages

Wet Blasting Technology, Part 5 – PureFinish® Offers Food-Grade Excellence

Within the food, chemical, and pharmaceutical industries, hygiene is a top priority. For safety and quality assurance, the occurrence of contamination through bacteria, proteins, or other elements must be prevented. Process plants require a defined, homogeneous, and reproducible surface for all parts that come in contact with food, beverages, chemicals, and pharmaceutical products.

Rosler delivers full compliance cleaning for stainless steel surfaces with PureFinish®, a unique wet blasting process.

What is PureFinish®?

Rosler developed this proprietary blasting process to deep-clean stainless steel components. Media specifically designed by Rosler for this environmentally friendly process remains suspended in water and is propelled onto the work piece surface with velocity. 

Continue reading Wet Blasting Technology, Part 5 – PureFinish® Offers Food-Grade Excellence

Preservation Lines Deliver Multi-Step Surface Finishing in a Single Machine

Complete systems for blast cleaning and placing a protective coating, preservation lines are extremely useful on plates and profiles that require multiple treatments.

For example, structural steel components are commonly processed by preservation lines because they are prone to rust quickly and fail with potentially catastrophic consequences if not covered with a suitable, protective coating.

Rosler has extensive experience preparing structural steel components for use in constructionshipbuilding, and the production of all kinds of heavy-duty vehicles, trucks, railway vehicles, agricultural implements, or construction equipment. We understand the importance of applying proper surface finishing processes to these components for safety and longevity.

Offering shot blasting, painting, and more in a single source, preservation lines are a great option for a variety of industries, especially those utilizing structural steel components including steel plates, beams, round bar stock, and tubes.

Continue reading Preservation Lines Deliver Multi-Step Surface Finishing in a Single Machine

wet blasting technology, part 4 – typical wet blasting applications

Wet blasting can do nearly any job that is done with dry shot blasting. The defining differences are that wet blasting does so more gently and without producing dust. In addition, wet blasting can handle a small amount of oil and grease unlike dry blasting.

At Rosler, we have more than 80 years’ experience in surface finishing. While wet blasting has gained popularity recently, we’ve used this technique to provide precise, repeatable results to a number of industries over the years.

Typical Applications

With proper testing and process parameters, wet blasting can achieve numerous surface finishing goals.

Continue reading wet blasting technology, part 4 – typical wet blasting applications

Wet Blasting Technology, Part 3 – Technical Features, Slurry Control Achieve Precise Finishing

Numerous technical features combine to make wet blasting an effective method of surface finishing.

When expertly combined by an experienced finishing expert such as Rosler, this method can achieve precise and repeatable results on a variety of work pieces from a wide range of industries.

A general understanding of the essential technical elements of a wet blasting machine will help you select a machine for your specific needs as well as prolonging the efficiency and life of existing wet blasting equipment.

Continue reading Wet Blasting Technology, Part 3 – Technical Features, Slurry Control Achieve Precise Finishing

Wet Blasting Technology, Part 2 – Comparing Attributes, Advantages to Dry Blasting

Unlike dry blasting in which only solid abrasive media is used, wet blasting processes use a slurry in which the media is embedded in water. This greatly cushions the impact energy on the work pieces, providing gentler, yet effective results for delicate work pieces.

As the utilization of wet blasting increases, Rosler reminds manufacturers to review their traditional, dry shot blasting applications and consider if wet blasting could provide additional efficiencies, reduced costs, and better results.

Understanding the Differences

Visual comparison of wet, dry shot, and dry grit blastings' impact on surfaces

As in any surface finishing process, the starting condition of the work piece, its material composition, shape, and final finish largely dictate which finishing application is most appropriate. Understanding how the application changes the work piece is a key consideration.

Continue reading Wet Blasting Technology, Part 2 – Comparing Attributes, Advantages to Dry Blasting