BS EN ISO 3452-3:2013 pdf download

BS EN ISO 3452-3:2013 pdf download.Non-destructive testing —Penetrant testing Part 3: Reference test blocks (Iso3452-3:2013).
— Tipe I reference blocks are used to deterinnie the sensitivity levels of both fluorescent and colour contrast penetrant product families;
— Tipe 2 reference blocks are used for routine assessnient of the performance of both fluorescent and colour contrast penetrant testing.
The reference blocks are to be used In accordance with part 1 of this International Standard.
2 Normative references
The following referenced documents, En whole or In part, are normatively referenced In this document and are indispensable for its application. For dated references, only the edition cited applies, For undated references, the latest edition of the referenced document (including any amendments) applies.
EN 10088-1, Stainless steels — Part 1: List of standard stainless steels
EN 10204. Metallic products — 7pes of inspection documents
ISO 4957, Tool steels
ISO 10474, Steel and steel products — Inspection documents
ISO 15510, StaInless steels — Chemical composition
3 Description of reference blocks
The ‘1’pe 1 reference block consists of a set of four nickel-chrome plated panels with 10 pm, 20 pm, 30 pm and 50 pm thickness of plating, respectively. The 10 pm. 20 pm, 30 pm and 50 pm panels can be used for determination of the sensitivity of fluorescent penetrant systems. The sensitivity of colour contrast penetrant systems is determined using the 30 pm and 50 pm panels.
The 1’pe 2 reference block consists of a single panel of which one half has been plated with electroless nickel and a thin layer of chromium and the other half prepared to achieve areas of specific roughness. The plated side exhibits five star-shaped discontinuities.
4 Type 1 reference block design and dimensions
The Jpe I panels are rectangular in shape with typical dimensions of 35 mm x 100 mm 2 mm (see FiiureI). Each panel consists of a uniform layer of nickel-chromium plated on to a brass base, the thickness of nickel-chromium being 10 pm. 20 pm, 30 pm and 50 pm respectively. Transverse cracks are made in each panel by stretching the panels in the longitudinal direction. The width to depth ratio of each crack should be approximately 1:20.
5.1.2 Rinsability area
For checking the rinsability of penetrants, four adjacent areas sized 25 mm by 35 mm are produced down on one half of the test surface of the panel with roughnesses of Rat 2,5 pm. Rat 5pm. R 2 10 pm and Ra = 15 pm (see Figure 2).
The area with Ra 2,5 pm may be produced by sand blasting and the other areas by electroerosion.
5.1.3 Defect area
5.1.3.1 General
The defect ae-ea is located on the other half of the test surface of the panel (see Figure 2).
5.1.3.2 Plating
A 60 pm ± 3 pm thickness of electroless nickel shall he plated on to the test surface of the panel to achieve a hardness value ranging from HV 0,2 = 500 to 600
The nickel layer shall be plated with a thin layer of hard chromium of 0,5 pm to 1.5 pm thickness. The panel shall then be heat treated to achieve a hardness value ranging from [IV 0.3 900 to 1 000 by. for example, heating at 405°C for 70 mm. The roughness R nfthe chromium platingshall he 1,2 pm to 1,6 pm.
5.1.3.3 Artificial defect production
Five equidistant indentations shall be made under loads typically in the range 2 kN to 8 kN on the reverse side ofthe test surface (plated area).
For example, the production of the five artificial defects may be made using the following Table 1.