Hivatkozási szám

MSZ EN ISO 4499-2:2020

Dokumentumazonosító

175894

Cím

Keményfémek. A szövetszerkezet metallográfiai vizsgálata. 2. rész: A volfrámkarbid szemcseméretének meghatározása (ISO 4499-2:2020)

Angol cím

Hardmetals. Metallographic determination of microstructure. Part 2: Measurement of WC grain size (ISO 4499-2:2020)

Alkalmazási terület

This document gives guidelines for the measurement of hardmetal grain size by metallographic techniques only using optical or electron microscopy. It is intended for WC/Co hardmetals (also called cemented carbides or cermets) containing primarily tungsten carbide (WC^1)ˇ) as the hard phase. It is also intended for measuring the grain size and distribution by the linear-intercept technique. This document essentially covers four main topics: — calibration of microscopes, to underpin the accuracy of measurements; — linear analysis techniques, to acquire sufficient statistically meaningful data; — analysis methods, to calculate representative average values; — reporting, to comply with modern quality requirements. This document is supported by a measurement case study to illustrate the recommended techniques (see Annex A). This document is not intended for the following: — measurements of size distribution; — recommendations on shape measurements. Further research is needed before recommendations for shape measurement can be given. Measurements of coercivity are sometimes used for grain-size measurement, however, this document is concerned only with a metallographic measurement method. It is also written for hardmetals and not for characterizing powders. However, the method can, in principle, be used for measuring the average size of powders that are suitably mounted and sectioned.

ICS

77.040.99 Egyéb fémvizsgálati módszerek

77.160 Porkohászat

A szabvány nyelve

angol

Az érvényesség kezdete

2020-11-01

Forrás

idt EN ISO 4499-2:2020; idt ISO 4499-2:2020

Előd

MSZ EN ISO 4499-2:2010

Utód

Módosítás

SZK-közlemények

Kapcsolódó európai jogszabály

A szabvány

kapható formátuma

Papír ,
PDF (letöltés) (a fájl mérete: 957656) ,

oldalszáma

24 oldal; M kategória

ára

Nettó: 11290 Ft
Bruttó:
Papír formátum esetén (5% Áfával): 14225 Ft
PDF (letöltés) formátum esetén (27% Áfával): 14338 Ft