The Rubert Shot and Grit Blasting Comparators are precision reference specimens designed for the tactile and visual assessment of surface roughness on steel substrates. These comparators are essential for verifying surface profiles following blast-cleaning processes to ensure compliance with industry standards prior to the application of protective coatings.
- Standardized Assessment: Specifically engineered to evaluate surface roughness on steel surfaces prepared by blast cleaning.
- Compliance: Conforms to ISO 8503 standards for surface profile comparison.
- Application Readiness: Facilitates quality control for cleanliness grades SA 2.5 and SA 3.
- Versatile Utility: Suitable for checking the roughness of steel surfaces prepared for painting.
These comparison specimens are utilized for:
- Checking the roughness of steel surfaces prepared for painting by blast-cleaning, as outlined in ISO 8503.
- Checking the roughness of turned, milled, ground, reamed, polished, or lapped parts during machining.
- Checking the roughness of spark-eroded surfaces as described in the VDI 3400 Guideline.
- Checking the seriousness of damage to parts caused by nicks, dents, and scratches.
- Checking reconditioned ship propeller blades.
