Overview
SIST EN ISO 11127-2:2021 is an international standard that specifies a method for determining the particle size distribution of non-metallic blast-cleaning abrasives by sieving. Part of the broader ISO 11127 series, this standard supports quality control and specification compliance in the preparation of steel substrates before the application of paints and related coatings.
This standard is essential for industries and laboratories that rely on precise abrasive properties to ensure consistent performance in blast-cleaning processes. Accurate particle size distribution directly affects surface preparation quality, coating adhesion, and the overall durability of protective finishes.
Key Topics
- Particle Size Distribution: The standard outlines a consistent, reproducible method for determining how non-metallic abrasive particles are distributed by size, using calibrated test sieves.
- Non-Metallic Abrasives: Applies to a range of blast-cleaning abrasives such as slags, garnet, aluminum oxide, and more, as detailed in the ISO 11126 series.
- Sieving Procedure: Describes the use of specified metal wire test sieves, a sieve machine, and sample dividers to accurately separate and measure particle size fractions.
- Sampling and Reporting: Provides guidelines for obtaining representative test portions and requires detailed documentation, ensuring traceability and repeatability in test results.
Applications
The determination of particle size distribution of non-metallic blast-cleaning abrasives is critical in multiple practical scenarios:
- Surface Preparation in Coating Operations: Ensures steel surfaces are properly prepared, achieving the roughness and cleanliness needed for optimal paint or coating adhesion.
- Quality Assurance for Abrasive Manufacturers: Enables producers to demonstrate compliance with customer or regulatory specifications.
- Maintenance of Industrial Equipment: Used in industries such as shipbuilding, oil and gas, and construction, where consistent abrasive performance affects equipment longevity and process efficiency.
- Contract Specification Checks: Provides verifiable, standard-based data to settle disputes or verify delivered abrasive materials meet the agreed particle size requirements.
Related Standards
The ISO 11127-2:2021 standard is part of a logical set of international standards focused on non-metallic blast-cleaning abrasives:
-
ISO 11127 Series - Test methods for non-metallic blast-cleaning abrasives:
- Part 1: Sampling
- Part 2: Determination of particle size distribution (this document)
- Part 3: Determination of apparent density
- Part 4: Assessment of hardness by a glass slide test
- Part 5: Determination of moisture
- Part 6: Determination of water-soluble contaminants by conductivity
- Part 7 & 8: Determination of water-soluble chlorides
-
ISO 11126 Series - Specifications for various types of non-metallic abrasives, including copper slag, coal furnace slag, fused aluminum oxide, olivine, staurolite, and others.
Using SIST EN ISO 11127-2:2021 in conjunction with the ISO 11126 series helps ensure a comprehensive, standardized approach to abrasive selection, testing, and quality assessment for steel substrate preparation.
Keywords: ISO 11127-2:2021, particle size distribution, non-metallic blast-cleaning abrasives, surface preparation, steel substrates, abrasive sieving, coatings, quality control, abrasive testing standards