NF EN ISO 6506-2
Metallic materials - Brinell hardness test - Part 2 : verification and calibration of testing machines
ISO 6506-2:2014 specifies methods of direct and indirect verification of testing machines used for determining Brinell hardness in accordance with ISO 6506‑1, and also specifies when these two types of verification has to be performed.The direct verification involves checking that individual machine performance parameters fall within specified limits whereas the indirect verification utilizes hardness measurements of reference blocks, calibrated in accordance with ISO 6506‑3, to check the machine's overall performance.If a testing machine is also to be used for other methods of hardness testing, it has to be verified independently for each method.ISO 6506-2:2014 is applicable to both fixed location and portable hardness testing machines. For machines that are incapable of satisfying the specified force-time profile, the direct verification of force and testing cycle can be modified by the use of Annex B.
ISO 6506-2:2014 specifies methods of direct and indirect verification of testing machines used for determining Brinell hardness in accordance with ISO 6506‑1, and also specifies when these two types of verification has to be performed.
The direct verification involves checking that individual machine performance parameters fall within specified limits whereas the indirect verification utilizes hardness measurements of reference blocks, calibrated in accordance with ISO 6506‑3, to check the machine's overall performance.
If a testing machine is also to be used for other methods of hardness testing, it has to be verified independently for each method.
ISO 6506-2:2014 is applicable to both fixed location and portable hardness testing machines. For machines that are incapable of satisfying the specified force-time profile, the direct verification of force and testing cycle can be modified by the use of Annex B.
ISO 6506-2:2005 specifies a method of verification and calibration of testing machines used for determining Brinell hardness in accordance with ISO 6506-1. ISO 6506-2:2005 specifies a direct method for checking the main functions of machine operation and an indirect method suitable for the overall checking of the machine. The indirect method may be used independently for periodic routine checking of machine operation while in service. If a testing machine is also to be used for other methods of hardness testing, it should be verified independently for each method. ISO 6506-2:2005 is also applicable to portable hardness testing machines.
ISO 6506-2:2017 specifies methods of direct and indirect verification of testing machines used for determining Brinell hardness in accordance with ISO 6506?1 and also specifies when these two types of verification have to be performed. The direct verification involves checking that individual machine performance parameters fall within specified limits whereas the indirect verification utilizes hardness measurements of reference blocks, calibrated in accordance with ISO 6506?3, to check the machine's overall performance. If a testing machine is also to be used for other methods of hardness testing, it has to be verified independently for each method. ISO 6506-2:2017 is applicable to both fixed location and portable hardness testing machines. For machines that are incapable of satisfying the specified force-time profile, the direct verification of force and testing cycle can be modified by the use of Annex B.
- Avant-propos
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1 Domaine d'application
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2 Références normatives
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3 Conditions générales
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4 Vérification directe
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5 Vérification indirecte
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6 Intervalles entre les vérifications
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7 Rapport de vérification/certificat d'étalonnage
- Annexe B (normative) Vérification des machines d'essai de dureté qui ne peuvent pas satisfaire le profil force/temps spécifié
- Annexe A (informative) Incertitude de mesure des résultats de la vérification de la machine d'essai de dureté
- Bibliographie
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