BS EN 623-4:2004 pdf free.Advanced technical ceramics — Monolithic ceramics — Generaland textural properties—Determination of surface roughness.
BS EN 623-4 This part of EN 623 concerns the use of conventional stylus type instruments for the measurement ofsurface texture of advanced monolithic technical ceramics, sets the test machine measuring parameters,and recommends the adoption of certain precautions and conditions of measurement.
NOTE Non-contact optical methods of surface texture measurement employ a different concept using anarrow laser beam.The interaction of the beam with the surface is influenced by the angle of the surface to thebeam and the reflectivity/translucence of the surface.The reflected beam is detected in a number of ways basedon spot focus or beam deflection and converted into a height profile.Results from such a test are not directlyequivalent to those obtained by the stylus method.
The following referenced documents are indispensable for the application of this document. For datedreferences, only the edition cited applies. For undated references, the latest edition of the referenceddocument (including any amendments) applies.
ENV 1006,Advanced technical ceramics — Monolithic ceramics — Guidance on the selection of testpieces for the evaluation of properties
EN ISO/IEC 17025, General requirements for the competence of testing and calibration laboratories(1SO/IEC 17025:1999)
EN ISO 3274, Geometrical product specifications (GPS)—Surface texture: Profile method – Nominalcharacteristics of contact (stylus) instruments (Iso 3274:1996)
EN ISO 4287:1998,Geometrical product specifications (GPS)—Surface texture: Profile method 一Terms, definitions and surface texture parameters (Iso 4287:1997)
EN ISO 4288:1997,Geometrical product specifications (GPS)— Surface texture: Profile method —Rules and procedures for the assessment of surface texture (Iso 4288:1996)
EN ISO 5436-1:2000,Geometrical product specifications (GPS)— Surface texture: Profile method;Measurement standards — Part 1: Material measures (ISO 5436-1:2000)
Various types of equipment to perform this measurement are commercially available, and the proceduresfor calibration and measurement should conform to existing international standards EN ISo 3274, ENISO 4288,EN ISO 5436-1, and EN ISO 12169.The equipment usually incorporates proprietary signalprocessing routines designed to produce single-valued parameters from an appropriate length of trace,usually by first digitising the signal. Many instruments then apply a trace levelling routine to take outgeneral tilt of the surface relative to the axis of measurement.Finally, the trace is divided into samplingiengths and analysed.Parameters derived from 10 such traces are typically analysed in order to ensureadequate sampling of the test surface.BS EN 623-4 pdf download.