Tag Archives: Wet Blast

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.

  1. Blast chamber with slurry tank – A mix of media and water is stored in this holding tank found at the bottom of the blast chamber. The chamber is made of stainless steel.
  2. Compressed air – Approximately 70 PSI of compressed air accelerates the slurry.
  3. Blast gun(s) – One or more guns accelerate the slurry supplied by the slurry pump with compressed air.
  4. Blast media feed – This component supplies the media slurry to the blast nozzle.
  5. Slurry pump – This high-powered mechanism transports the slurry to the blast gun(s). Larger wet blast systems can be equipped with multiple pumps.
  6. Slurry agitator (stirrer nozzle) – In order to keep the media suspended in the water, the slurry pump diverts some of its flow to a stirrer nozzle placed in the tank to agitate the mix of water and abrasives.
  7. Overflow – Small media particles, dirt, and other contaminants tend to stay suspended and are skimmed off and sent to the filtration unit.
  8. Water filtration system – Media particles and debris skimmed off the water’s surface must be passed through a filtration system to separate still usable media and process water from waste. Common filtration methods include hydrocyclones, weir tanks, bag filters, paper band filters, and semi- and fully automatic centrifuges.
  9. Filtered water – Once processed by a water filtration system, water is returned to the slurry tank and reused.
  10. Exhaust vent – The water mist mixed with media fines and other small particulates is removed from blast cabinet by suction fan-equipped filters.

The Rosler Way

We have the experience and expertise to meet your wet blasting needs. Rosler partners with you to find a better way, the best machine, and the best finishing results. Contact us today to discuss your unique challenges.

Previous posts in the Wet Blasting Equipment & Media series include:

Upcoming posts will include:

  • Part 3 – “Maintain Slurry Concentrations for Finishing Consistency.”
  • Part 4 – “Internal Cleaning, Rebuilds Prolong Machine Lifetime.”
  • Part 5 – “Careful Media Selection, Additive Use Impact Results.”

Sign up for enews alerts to be notified of new posts!

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

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

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

Surface Finishing Guidebook for Medical Instruments

Among the various technologies used for finishing the surface of medical instruments, mass finishing and shot blasting play a key role, not only as intermediate steps but also for placing the final, finishing touch on these components.

Besides the right material selection, surface treatment is an essential Download Rosler's Medical Instruments Guidebookcomponent of the overall manufacturing process of medical instruments. Only high-quality surface finishes guarantee the required functionality, high sterility, corrosion resistance, and absolute reliability that most medical components require, while also providing a satin, non-glare appearance.

To cover this complex topic, we’ve created an exclusive surface finishing guidebook, specifically for medical instruments!  In this guidebook we will discuss Continue reading Surface Finishing Guidebook for Medical Instruments