ISO 27831-1:2008
(Main)Metallic and other inorganic coatings — Cleaning and preparation of metal surfaces — Part 1: Ferrous metals and alloys
Metallic and other inorganic coatings — Cleaning and preparation of metal surfaces — Part 1: Ferrous metals and alloys
ISO 27831-1:2008 specifies processes for the cleaning of the surfaces of ferrous metals and their alloys to remove any irrelevant or unwanted deposits or other material at any stage of manufacture, storage or service and for the preparation of these surfaces for further treatment. It does not cover cleaning operations associated with the preliminary removal of heavy deposits of oil, grease or dirt accumulated during operational service, preparations for welding or the cleaning of electrical contacts. However, many of the processes included in this part of ISO 27831 may be used for these operations at the discretion of the users of this part of ISO 27831. It covers processes which are needed for the preparation of metal surfaces prior to the application of the following surface coatings: electrodeposited metal coatings; autocatalytic metal coatings (autocatalytic and displacement types); conversion coatings; hot-dipped coatings; sprayed metal coatings; diffusion coatings; coatings produced by vitreous enamelling; coatings produced by physical vapour deposition of aluminium and cadmium; powder coatings. It describes processes for carrying out the following treatments: degreasing; descaling; pickling; de-rusting; chemical smoothing; electropolishing. It relates the processes described above to the following metals: non-corrosion-resisting steels, cast irons and pure irons; corrosion-resisting and heat-resisting steels.
Revêtements métalliques et autres revêtements inorganiques — Nettoyage et préparation des surfaces métalliques — Partie 1: Métaux ferreux et alliages
General Information
Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 27831-1
First edition
2008-10-15
Metallic and other inorganic coatings —
Cleaning and preparation of metal
surfaces —
Part 1:
Ferrous metals and alloys
Revêtements métalliques et autres revêtements inorganiques —
Nettoyage et préparation des surfaces métalliques —
Partie 1: Métaux ferreux et alliages
Reference number
ISO 27831-1:2008(E)
©
ISO 2008
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ISO 27831-1:2008(E)
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ISO 27831-1:2008(E)
Contents Page
Foreword. vi
Introduction . vii
1 Scope . 1
2 Normative references . 2
3 Terms and definitions. 2
4 Essential information to be supplied by the purchaser to the processor . 3
5 Requirements . 3
6 Standard cleaning methods. 4
7 Non-corrosion-resisting steels, cast irons and pure irons . 5
7.1 Non-corrosion-resisting steels. 5
7.1.1 Selection of method of cleaning . 5
7.1.2 Stress relief heat treatment . 5
7.1.3 General degreasing and cleaning . 5
7.1.3.1 Steels of tensile strength up to 1 000 MPa . 5
7.1.3.2 Steels of tensile strength in the range 1 000 MPa to 1 400 MPa . 5
7.1.3.3 Steels of tensile strength in the range 1 400 MPa to 1 800 MPa . 5
7.1.3.4 Steels of tensile strength over 1 800 MPa . 6
7.1.4 Preparation prior to electroplating. 6
7.1.5 Preparation prior to autocatalytic nickel plating .7
7.1.6 Preparation prior to phosphate treatment. 7
7.1.7 Preparation prior to sherardizing.
...
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