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Standard ČSN EN ISO 6506-2 1.8.2020 preview

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ČSN EN ISO 6506-2 (420359)

Metallic materials - Brinell hardness test - Part 2: Verification and calibration of testing machines

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STANDARD published on 1.8.2020


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The information about the standard:

Designation standards: ČSN EN ISO 6506-2
Classification mark: 420359
Catalog number: 510426
Publication date standards: 1.8.2020
SKU: NS-1000868
The number of pages: 20
Approximate weight : 60 g (0.13 lbs)
Country: Czech technical standard
Category: Technical standards ČSN

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Mechanical testing of metals

Annotation of standard text ČSN EN ISO 6506-2 (420359):

Tato norma specifikuje metody přímého a nepřímého ověřování zkušebních strojů používaných ke stanovení tvrdosti podle Brinella podle ISO 6506-1 a také specifikuje, kdy se mají tyto dva typy ověřování provádět. Přímé ověřování zahrnuje kontrolu, zda výkonové parametry jednotlivých strojů spadají do předepsaných mezí, zatímco nepřímé ověřování využívá měření tvrdosti referenčních destiček kalibrovaných v souladu s ISO 6506-3 ke kontrole celkové způsobilosti strojů. Pokud se má zkušební stroj rovněž používat pro jiné metody zkoušení tvrdosti, má být nezávisle ověřován pro každou metodu. Tento dokument je aplikovatelný jak na stabilní, tak i na přenosné tvrdoměry. U strojů, které nejsou schopny dodržet stanovený průběh zatížení-čas se může přímé ověřování zatížení a zkušebního cyklu upravit. Norma podrobně popisuje výše uvedenou problematiku a ve dvou přílohách se zabývá otázkami stanovení nejistot měření při ověřování tvrdoměrů a ověřováním tvrdoměrů, které nejsou schopny splnit předepsaný průběh zatížení versus čas

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