Founding - Liquid penetrant testing- Part 1: Sand, gravity die and low pressure die castings

This European Standard specifies a liquid penetrant testing method for castings produced in conventional sand moulds, by gravity and low-pressure die casting, except for investment castings and high-pressure die castings.
This European Standard applies to all cast metals, except copper-tin and/or copper-tin-lead alloy castings, where copper is the major constituent.

Gießereiwesen - Eindringprüfung - Teil 1: Sand-, Schwerkraftkokillen- und Niederdruckkokillengussstücke

Diese Europäische Norm legt ein Verfahren zur Eindringprüfung an Gussstücken fest, die in herkömmlichen Sand¬formen, nach dem Schwerkraftkokillengießverfahren und Niederdruckkokillengießverfahren hergestellt wurden, mit Ausnahme von Fein- und Druckgussstücken.
Diese Europäische Norm gilt für alle Gusslegierungen mit Ausnahme von Gussstücken aus Kupfer-Zinn- und/oder Kupfer-Zinn-Blei-Legierungen mit Kupfer als Hauptbestandteil.

Fonderie - Contrôle par ressuage - Partie 1: Pièces moulées en sable, en coquille, par gravité et basse pression

La présente Norme européenne spécifie une méthode de contrôle par ressuage des pièces moulées produites dans des moules classiques en sable et dans des moules permanents pour moulage par gravité et basse pression, à l'exception des pièces moulées produites par moulage en cire perdue ou sous pression.
La présente Norme européenne s’applique à tous les métaux moulés, à l'exception des pièces moulées en alliages cuivre-étain et/ou cuivre-étain-plomb où le cuivre est l'élément majoritaire.

Livarstvo - Preiskava s penetrirno tekočino - 1. del: Ulitki v pesek, težnostno kokilno uliti in nizkotlačno uliti ulitki

Ta evropski standard velja za preskušanje s penetrirno tekočino vseh ulitkov (razen ulitkov iz zlitine bakra in kositra in/ali zlitine bakra, kositra in svinca, kjer je baker glavna sestavina), ki se izdelujejo kot konvencionalni ulitki v pesek, težnostno kokilno uliti ulitki in nizkotlačno uliti ulitki, ne glede na njihov razred in postopek litja, uporabljen pri njihovi izdelavi. Ta standard ne velja za ulitke, narejene s precizijskim litjem in visokotlačnim litjem.

General Information

Status
Published
Publication Date
22-Nov-2011
Current Stage
9020 - Submission to 2 Year Review Enquiry - Review Enquiry
Due Date
15-Jan-2017
Completion Date
15-Jan-2017

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Gießereiwesen - Eindringprüfung - Teil 1: Sand-, Schwerkraftkokillen- und NiederdruckkokillengussstückeFonderie - Contrôle par ressuage - Partie 1: Pièces moulées en sable, en coquille, par gravité et basse pressionFounding - Liquid penetrant inspection - Part 1: Sand, gravity die and low pressure die castings77.140.80Železni in jekleni ulitkiIron and steel castingsICS:Ta slovenski standard je istoveten z:EN 1371-1:2011SIST EN 1371-1:2012en,fr,de01-januar-2012SIST EN 1371-1:2012SLOVENSKI

STANDARDSIST EN 1371-1:19981DGRPHãþD
SIST EN 1371-1:2012
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1371-1
November 2011 ICS 77.140.80; 77.150.99 Supersedes EN 1371-1:1997English Version

Founding - Liquid penetrant testing- Part 1: Sand, gravity die and low pressure die castings

Fonderie - Contrôle par ressuage - Partie 1: Pièces moulées en sable, en coquille, par gravité et basse pression

Gießereiwesen - Eindringprüfung - Teil 1: Sand-, Schwerkraftkokillen- und Niederdruckkokillengussstücke This European Standard was approved by CEN on 15 October 2011.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,

B-1000 Brussels © 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1371-1:2011: ESIST EN 1371-1:2012

EN 1371-1:2011 (E) 2 Contents Page Foreword ..............................................................................................................................................................3Introduction .........................................................................................................................................................41 Scope ......................................................................................................................................................52 Normative references ............................................................................................................................53 Conditions for liquid penetrant testing ...............................................................................................54 Method of testing ...................................................................................................................................54.1 Operating mode .....................................................................................................................................54.2 Qualification of the operators ...............................................................................................................64.3 Surface preparation ...............................................................................................................................64.4 Conditions of testing .............................................................................................................................65 Acceptance criteria ................................................................................................................................65.1 Indications of discontinuities ...............................................................................................................65.2 Definition of liquid penetrant indications ............................................................................................75.3 Severity levels ........................................................................................................................................76 Classification of the indications and interpretation of results .........................................................87 Retesting .................................................................................................................................................88 Post-examination cleaning procedures ..............................................................................................89 Test report ..............................................................................................................................................8Annex A (normative)

Conversion of severity levels of linear (LP) and aligned (AP) indications ........... 11Annex B (informative)

Nature of discontinuities and types of corresponding liquid penetrant indications ........................................................................................................................................... 12Annex C (informative)

Reference figures – Non-linear isolated indications designated SP .................... 13Annex D (informative)

Reference figures – Non-linear indications designated SP and CP ..................... 16Annex E (informative)

Reference figures – Linear and aligned indications designated LP and AP ....... 18Annex F (informative)

Model of a liquid penetrant test report ..................................................................... 22Annex G (informative)

Significant technical changes between this European Standard and the previous edition .................................................................................................................................. 25Bibliography ..................................................................................................................................................... 26 SIST EN 1371-1:2012

EN 1371-1:2011 (E) 3 Foreword This document (EN 1371-1:2011) has been prepared by Technical Committee CEN/TC 190 “Foundry technology”, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 2012, and conflicting national standards shall be withdrawn at the latest by May 2012. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 1371-1:1997. Within its programme of work, Technical Committee CEN/TC 190 requested CEN/TC 190/WG 11 "Surface inspection" to revise the following standard:  EN 1371-1, Founding — Liquid penetrant testing — Part 1: Sand, gravity die and low pressure die castings This is one of two European Standards for liquid penetrant testing for castings.

The other standard is:  EN 1371-2, Founding — Liquid penetrant inspection — Part 2: Investment castings Annex G provides details of significant technical changes between this European Standard and the previous edition. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom.

SIST EN 1371-1:2012

EN 1371-1:2011 (E) 4 Introduction This European Standard complements the general principles of liquid penetrant testing given in EN 571-1 for the additional requirements for castings. Liquid penetrant testing as well as any other non-destructive examination method is part of a general or specific assessment of the quality of a casting to be agreed between the manufacturer and the purchaser at the time of acceptance of the order. SIST EN 1371-1:2012

EN 1371-1:2011 (E) 5 1 Scope This European Standard specifies a liquid penetrant testing method for castings produced in conventional sand moulds, by gravity and low-pressure die casting, except for investment castings and high-pressure die castings.

This European Standard applies to all cast metals, except copper-tin and/or copper-tin-lead alloy castings, where copper is the major constituent. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 473, Non-destructive testing —Qualification and certification of NDT personnel — General principles EN 571-1, Non destructive testing — Penetrant testing — Part 1: General principles EN ISO 3059, Non-destructive testing — Penetrant testing and magnetic particle testing — Viewing conditions (ISO 3059:2001) 3 Conditions for liquid penetrant testing The manufacturing stage(s) when liquid penetrant testing is to be performed shall be clearly defined by agreement between the manufacturer and the purchaser by the time of ordering. The methods detailed in this standard shall only apply to the agreed surfaces of castings and the percentage or number of castings to be checked. For each agreed area of the casting to be inspected, the following shall be indicated:  type of discontinuity;  severity level. This information enables the manufacturer to assess the additional testing and operations involved. Sensitivity can differ depending on the method of liquid penetrant testing selected and surface condition. Therefore the liquid penetrants used and the method agreed shall fit to detect the minimum required severity level. The type of discontinuity and the severity level can vary depending on the area of the casting inspected (see Table 1 and Table 2). The conversion from the severity levels specified in EN 1371-1:1997, Table 3 [1], to the severity levels specified in Table 2 of the present edition is given in Table A.1. 4 Method of testing 4.1 Operating mode Testing shall be carried out as described in EN 571-1. The characteristics of the penetrant materials shall be checked in accordance with specifications to be agreed between the manufacturer and the purchaser. SIST EN 1371-1:2012

EN 1371-1:2011 (E) 6 4.2 Qualification of the operators Unless otherwise agreed, testing shall be performed by personnel, qualified in accordance with EN 473 or by a certification scheme which is considered to be equivalent.

4.3 Surface preparation The surface to be inspected shall be clean, free from rust, sand, scale, moulding and mould coating residues, oil, grease, paint or any other contaminant which can interfere with a correct testing. Shot blasting is not recommended prior to liquid penetrant testing, except for sand moulded castings. If shot blasting is necessary, it shall be as light as possible, in order to avoid sealing or closing up possible discontinuities. If the risk of sealing or closing up possible discontinuities is unacceptable then blasting shall be followed by chemical etching in order to enable detection of discontinuities. The chemical composition of the etching bath and other parameters such as concentration, temperature, immersion time neutralizing and rinsing, if applicable, shall be recorded. To detect the smallest indication to be considered, the surface finish shall be in accordance with Table 3, unless otherwise specified at the time of ordering. NOTE It is recommended that the assessment of surface finish is carried out using a visual cast-surface roughness comparator, see EN 1370. 4.4 Conditions of testing The testing shall be carried out with the naked eye or at a maximum magnification of 3 and viewing conditions in conformity with EN ISO 3059. 5 Acceptance criteria 5.1 Indications of discontinuities 5.1.1 General The indication of discontinuities can be non-linear (isolated or clustered), aligned or linear. Although liquid penetrant testing cannot generally be used to determine the size of detected discontinuities, it allows discontinuities to be assessed by measurement of the length L of the indication. In the following clauses:  L indicates length;  W indicates width;  P indicates liquid penetrant;  SP indicates non-linear isolated indication;  CP indicates non-linear clustered indication;  AP indicates aligned indication;  LP indicates linear indication. NOTE Based on the principle of the test method, the operator evaluates the size of the indications, not the real size of discontinuities. SIST EN 1371-1:2012

EN 1371-1:2011 (E) 7 5.1.2 Criteria The physical discontinuities shall give either a non-linear, linear or aligned liquid penetrant testing indication. The various types of penetrant indication can correspond to the discontinuities (A, B, C, etc.) shown in Annex B (informative). 5.2 Definition of liquid penetrant indications a) Linear indication (LP). An indication with a largest dimension three or more times its smallest dimension (i.e. L ≥ 3 W); b) Non-linear indication. An indication with a largest dimension less than three times its smallest dimension (i.e. L < 3 W):  isolated (SP);  clustered (CP): area of multiple indications, the distance between the indications cannot be measured (they seem to form only one indication); c) Aligned indication (AP). Indications that are either:  linear: the distance between two indications is smaller than the length of the longest discontinuity in the alignment; or  non-linear: the distance between two indications is less than 2 mm and at least three indications are noted. 5.3 Severity levels 5.3.1 General Several severity levels are recognized in accordance with Table 1 and Table 2. It is necessary to carry out the test on a surface corresponding to a given degree of finish (see Table 3) depending on the severity level desired. The liquid penetrant testing for each type of indication and its severity levels shall be specified at the time of ordering, by the purchaser, depending on the use of the castings. The manufacturer shall give his agreement. The penetrant indications to be taken into account shall have dimensions in accordance with the severity level. 5.3.2 Criteria Table 1 and Table 2 show the largest dimensions of the smallest indications to be considered in the severity level concerned. 5.3.3 Tables Table 1 corresponds to non-linear isolated or non-linear clustered indications. Table 2 corresponds to linear or aligned indications. Table 1 and Table 2 are independent (different severity levels may be selected from these tables). Reference figures corresponding to non-linear, aligned and clustered indications in accordance with Table 1 and Table 2 are represented in Annexes C, D and E for guidance only. SIST EN 1371-1:2012

EN 1371-1:2011 (E) 8 6 Classification of the indications and interpretation of results In order to classify an indication of discontinuity, a frame measuring 105 mm × 148 mm shall be placed in the most unfavourable location. The observed indications shall be in relation to the reference severity levels as described in this standard and compared to the equivalent or immediately better severity level. NOTE 1 105 mm × 148 mm corresp

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