AS 1627.4-2002

1 - AS 1627.4-2002 METAL FINISHING-PREPARATION AND PRETREATMENT OF SURFACES - ABRASIVE BLAST CLEANING
4 - PREFACE
6 - CONTENTS
7 - INTRODUCTION
9 - 1 Scope
9 - 2 Normative references
11 - 3 Terms and definitions
11 - 3.1 abrasive blast-cleaning
11 - 3.2 blast-cleaning abrasive
11 - 3.3 shot
11 - 3.4 grit
11 - 3.5 cylindrical particles
11 - 4 Abrasives
11 - 4.1 Materials and types
13 - 4.2 General requirements
13 - 4.2.1 Technical
13 - 4.2.2 Health and safety
13 - 4.3 Selection considerations
14 - 5 Abrasive blast-cleaning methods
14 - 5.1 Dry abrasive blast-cleaning
14 - 5.1.1 Centrifugal abrasive blast-cleaning
14 - 5.1.2 Compressed-air abrasive blast-cleaning
15 - 5.1.3 Vacuum or suction-head abrasive blast-cleaning
15 - 5.2 Wet abrasive blast-cleaning
15 - 5.2.1 General
15 - 5.2.2 Moisture-injection abrasive blast-cleaning (compressed-air moisture-injection abrasive blast-cleaning)
16 - 5.2.3 Compressed-air wet abrasive blast-cleaning
17 - 5.2.4 Slurry blast-cleaning
17 - 5.2.5 Pressurized-liquid blast-cleaning
18 - 6 Procedure
18 - 6.1 Preparation before blast-cleaning
18 - 6.2 Blast-cleaning
18 - 6.3 After blast-cleaning
19 - 6.4 Assessment of the blast-cleaned surface
20 - Annex A - International Standards for metallic and non-metallic blast-cleaning abrasives

Describes abrasive blast cleaning methods for the preparation of steel surfaces before coating with paints and related products. It also contains information on the effectiveness of the individual methods and their fields of application. This Standard is identical with and has been reproduced from ISO 8504-2:2000.

This part of ISO 8504 describes abrasive blast-cleaning methods for the preparation of steel surfaces before coating with paints and related products. It also contains information on the effectiveness of the individual methods and their fields of application.ISO 8504 is applicable to new and corroded steel surfaces and to steel surfaces that are uncoated or have been previously coated with paints and related products. For limitations, see note 2.NOTE 1 These methods are essentially intended for hot-rolled steel to remove mill scale, rust, etc., but could also be used for cold-rolled steel of sufficient thickness to withstand the deformation caused by the impact of abrasive.NOTE 2 There are several items that should be included in the purchaser's procurement documents to supplement this part of ISO 8504. Items that should be considered as a part of surface preparation before coating are edge grinding, removal of grease and oil, porosity of welds, removal of weld spatter, removal of burrs and other sharp edges, grinding of welds, filling of pits and other surface imperfections that may cause premature failure of the coating system (see ISO 8501-3 for more information) and the removal of water-soluble contaminants.

First published as AS CK9.4-1964.
Revised and redesignated as AS 1627.4-1974.
Second edition 1989.
Third edition 2002.