ISO 945-4:2019
Microstructure of cast irons — Part 4: Test method for evaluating nodularity in spheroidal graphite cast irons
This document specifies a test method for evaluating nodularity in spheroidal graphite cast irons by comparative visual analysis and image analysis techniques.
This document provides figures for different levels of nodularity and graphite particle count of spheroidal graphite cast irons for visual analysis.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Designations
4.1 Graphite classification by visual analysis
4.2 Graphite classification by image analysis
5 Sampling and sample preparation
6 Procedure for graphite classification
6.1 General
6.2 Procedure for visual analysis
6.3 Procedure for image analysis
6.4 Calculation of nodularity
6.5 Examination fields
6.6 Evaluation of the results
7 Reference images
8 Test report
Annex A (normative) Reference images for nodularity
Annex B (normative) Reference images for graphite particle count
Annex C (informative) Roundness of different graphite particles
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Designations
4.1 Graphite classification by visual analysis
4.2 Graphite classification by image analysis
5 Sampling and sample preparation
6 Procedure for graphite classification
6.1 General
6.2 Procedure for visual analysis
6.3 Procedure for image analysis
6.4 Calculation of nodularity
6.5 Examination fields
6.6 Evaluation of the results
7 Reference images
8 Test report
Annex A (normative) Reference images for nodularity
Annex B (normative) Reference images for graphite particle count
Annex C (informative) Roundness of different graphite particles
Bibliography