Question

Which gets a surface cleaner, wet blasting or dry blasting?

Answer
By Wade Hannon | Last updated: June 13, 2018
Presented by Graco Inc.

Wet (vapor) blasting technologies and dry blastingare similar in performance with regards to surface preparation. The shortfalls of older wet blasting technologies have, unfortunately, often been carried over and associated with newer wet blasting products. This misconception has given rise to myths that current wet blasting is not as effective as dry blasting.

Not only is wet abrasive blasting capable of removing the same kinds of contaminants as dry blasting, but it is also compliant with various surface preparation standards such as the SSPC SP10 (NACE No. 2) specification for near white metal cleaning.

Although the two are capable of the same kind of performance, the finished surface produced by dry blast cleaning differs significantly from a surface produced by wet blasting. Because dry blasting relies on the force of the impact to remove old coatings, rust, etc., the blast media can often penetrate and remove pieces of the substrate, resulting in a rough finish.

During wet blasting, the water acts as a cushion that prevents the abrasive particles from becoming embedded in the substrate. Furthermore, the water serves as a lubricant that reduces the heat generated by friction between the particles and the substrate. The result is a more even and polished finish.

For this reason, wet abrasive cleaning is often preferred over dry blasting for cleaning antique, fragile, soft or otherwise sensitive materials. (To learn more about this topic, see Understanding the Industry Shift to Wet Abrasive Blasting.)

Share this Q&A

  • Facebook
  • LinkedIn
  • Twitter

Tags

Materials Selection Surface Modification Equipment Procedures Application Methods Surface Modification Equipment General Procedures Cleaning Surface Preparation

Presented By

Logo for Graco Inc.

Written by Wade Hannon | Area Sales Manager, Specialty Products at GRACO Inc.

Profile Picture of Wade Hannon
Wade Hannon is an Area Sales Manager – Specialty Products at GRACO Inc. with responsibilities for equipment demonstrations, technical support, distributor development and sales support, marketing and promotion within assigned territories, trade shows and internal sales support.

More Q&As from our experts

Related Terms

Related Articles

Term of the Day

Beryllium Copper Alloy

A beryllium copper alloy is a chemical substance composed of copper as a base metal and beryllium as a secondary component...
Read Full Term

Don't miss the latest corrosion content from Corrosionpedia!

Subscribe to our newsletter to get expert advice and top insights on corrosion science, mitigation and prevention. We create world-leading educational content about corrosion and how to preserve the integrity of the world’s infrastructure and assets.

Resources
Go back to top