1、BS ISO 8535-1:2016 Diesel engines Steel tubes for high-pressure fuel injection pipes Part 1: Requirements for seamless cold- drawn single-wall tubes BSI Standards Publication WB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS ISO 8535-1:2016 BRITISH STANDARD National foreword This British St
2、andard is the UK implementation of ISO 8535-1:2016. It supersedes BS ISO 8535-1:2011 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee MCE/22, Engines for road vehicles. A list of organizations represented on this committee can be obtained on request to
3、 its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2016. Published by BSI Standards Limited 2016 ISBN 978 0 580 93903 7 ICS 43.060.40; 77.140.75 Compliance with
4、a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 December 2016. Amendments/corrigenda issued since publication Date T e x t a f f e c t e dBS ISO 8535-1:2016 ISO 2016 Diesel
5、engines Steel tubes for high- pressure fuel injection pipes Part 1: Requirements for seamless cold- drawn single-wall tubes Moteurs diesels Tubes en acier pour lignes dinjection de combustible haute pression Partie 1: Exigences pour les tubes monoparoi sans soudure tirs froid INTERNATIONAL STANDARD
6、ISO 8535-1 Sixth edition 2016-11-15 Reference number ISO 8535-1:2016(E)BS ISO 8535-1:2016ISO 8535-1:2016(E)ii ISO 2016 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2016, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or
7、 utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester. ISO co
8、pyright office Ch. de Blandonnet 8 CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyrightiso.org www.iso.orgBS ISO 8535-1:2016ISO 8535-1:2016(E)Foreword iv 1 Scope 1 2 Normative references 1 3 T erms and definitions . 1 4 Dimensions and tolerances . 1 4.1 Di
9、ameters 1 4.2 Length . 2 5 Material processing . 2 5.1 Steel manufacturing process . 2 5.2 Manufacturing of tubes 2 5.3 Surface quality . 4 5.3.1 General 4 5.3.2 Minimum quality inside surface (bore grade S) . 4 5.3.3 Higher quality inside surface (bore grades O, P , Q, R) 4 5.4 Surface finish 4 5.5
10、 Minimum mechanical properties of tubes 5 5.6 Cleanliness 5 5.7 Straightness . 5 5.8 Corrosion resistance 5 6 Testing . 5 6.1 General . 5 6.2 Scope of tests 5 6.3 Dimension tests 6 6.4 Mechanical-property tests 6 6.5 Bending test . 6 6.6 Cold upsetting of tubes 6 6.7 Surface quality test 6 6.8 Insid
11、e pressure test . 6 6.9 Retesting . 6 6.10 Test certificate . 7 7 Designation 7 8 Identification and mar king 8 9 P acking 8 Annex A (informative) Theoretical maximum pressure for inside pressure testing .9 Bibliography .10 ISO 2016 All rights reserved iii Contents PageBS ISO 8535-1:2016ISO 8535-1:2
12、016(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for wh
13、ich a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all
14、matters of electrotechnical standardization. The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. Thi
15、s document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives). Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or
16、 all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents). Any trade name used in this document is information given for the convenience of users
17、 and does not constitute an endorsement. For an explanation on the meaning of ISO specific terms and expressions related to conformit y assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following
18、URL: www.iso.org/iso/foreword.html. The committee responsible for this document is ISO/TC 22, Road vehicles, Subcommittee SC 34, Propulsion, powertrain, and powertrain fluids. This sixth edition cancels and replaces the fifth edition (ISO 8535-1:2011), which has been technically revised with the fol
19、lowing changes: inside diameter sizes 3,5 mm and 3,6 mm have been added to Table 1; code 5 and code 6 have been added to Table 4. A list of parts in the ISO 8535 series can be found on the ISO website. NOTE The first part of the general title, “Diesel engines”, is used for Part 1 only while for Part
20、 2, “Compression- ignition engines” is still used but will be replaced at the next revision.iv ISO 2016 All rights reservedBS ISO 8535-1:2016INTERNATIONAL ST ANDARD ISO 8535-1:2016(E) Diesel engines Steel tubes for high-pressure fuel injection pipes Part 1: Requirements for seamless cold-drawn singl
21、e-wall tubes 1 Scope This document specifies dimensions and requirements for seamless cold-drawn single-wall steel tubes for high-pressure fuel injection pipes used on diesel (compression-ignition) engines (class 2) and for fuel injection pump testing (class 1). This document applies to diesel (comp
22、ression-ignition) engines. 2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the ref
23、erenced document (including any amendments) applies. ISO 6507-1, Metallic materials Vickers hardness test Part 1: Test method ISO 6892-1, Metallic materials Tensile testing Part 1: Method of test at room temperature ISO 12345, Diesel engines Cleanliness assessment of fuel injection equipment 3 T erm
24、s a nd definiti ons No terms and definitions are listed in this document. ISO and IEC maintain terminological databases for use in standardization at the following addresses: IEC Electropedia: available at http:/ /www.electropedia.org/ ISO Online browsing platform: available at http:/ /www.iso.org/o
25、bp 4 Dimensions and tolerances 4.1 Diameters Recommended inside and outside diameters are given in Table 1. Other sizes may be used by agreement between supplier and customer. Tolerances on inside and outside diameters shall be as follows. a) Inside diameter, d d 4 mm: 0,05 mm for class 20,025 mm fo
26、r class 1 (these tolerances are in accordance with ISO 4093) d 4 mm: 0,10 mm ISO 2016 All rights reserved 1BS ISO 8535-1:2016ISO 8535-1:2016(E) NOTE Classes 1 and 2 are explained in Clause 1. b) Outside diameter, D D 8 mm: 0,06 mm D 8 mm: 0,10 mm for classes 1 and 2 c) The maximum value of the conce
27、ntricity of the tube outside diameter relative to the inside diameter shall be proportional to the wall thickness, as shown in Figure 1. Figure 1 Concentricity of the tube outside diameter 4.2 Length Length and tolerances on length shall be by agreement between supplier and customer. 5 Material proc
28、essing 5.1 Steel manufacturing process The tubes shall be manufactured from unalloyed quality steel or an equivalent quality steel produced by a steel-making process that ensures a very homogeneous structure. If requested by the customer, the supplier shall state the method of manufacture and the de
29、oxidation process used. 5.2 Manufacturing of tubes The final reduction(s) of the tube shall be followed by heat treatment to achieve the specified mechanical properties.2 ISO 2016 All rights reservedBS ISO 8535-1:2016ISO 8535-1:2016(E) Table 1 Recommended inside and outside diameters Inside diameter
30、 a(d) mm Outside diameter (D) mm 4 5 Preferred 4,5 6 6,35 7 8 9 10 12 15 19 24 30 1 1,12 1,25 1,4 1,5 1,6 1,7 1,8 1,9 2 2,12 Size combinations to be used appear in shaded cells 2,24 2,36 2,5 2,65 2,8 3 3,15 3,5 3,6 3,75 4 4,25 4,5 4,75 5 5,3 5,6 6 6,3 6,7 7,1 7, 5 8 8,5 9 9,5 10 10,6 11,2 11,8 12,5
31、NOTE The diameter sizes have been established with the ratio of outside to inside diameter within the range of 2 to 4. aBased on ISO 3. ISO 2016 All rights reserved 3BS ISO 8535-1:2016ISO 8535-1:2016(E) 5.3 Surface quality 5.3.1 General The outside and inside surfaces of finished tubes shall be free
32、 from scale, rust, grooves, laps, laminations, deep pits or other injurious defects. 5.3.2 Minimum quality inside surface (bore grade S) The inside of tubes of bore grade S shall be finished to ensure a smooth bore of accurate size with no more than five imperfections (fissures, crevices, etc.) over
33、 0,08 mm to 0,13 mm (maximum) deep, per tube cross-section, using 50 magnification for examination (see Table 2). 5.3.3 Higher quality inside surface (bore grades O, P , Q, R) If closer control over the depth of imperfections is required, bore grades O, P, Q or R, assessed under the magnification in
34、dicated (see Table 2) may be specified in the tube designation (see Clause 6). Table 2 Bore grades Code Permitted imperfections M a g n i f ic a t ion S As in 5.3.2 50 R A maximum of five imperfections over 0,05 mm to 0,08 mm (maximum) deep 100 Q A maximum of five imperfections over 0,02 mm to 0,05
35、mm (maximum) deep 100 P A maximum of five imperfections over 0,01 mm to 0,02 mm (maximum) deep 200 O All imperfections equal to or less than 0,01 mm deep 500 5.4 Surfac e finish The outside surface of the tube may be coated on delivery by metal plating or galvanizing, or may be submitted to a chemic
36、al surface treatment (see Table 3). The inside surface of the tube shall remain uncoated. T a b l e 3 S u r f a c e f i n i sh o n d e l i v e r y Code Outside surface condition A p p l ic a t ion r e m a r k s 0 Not specified (at manufacturers choice). May have additional finish at manufacturers ch
37、oice. 1 Outside surface as-processed, without any additional finish. Tubes annealed or normalized in a controlled atmosphere may be discoloured, but shall be free from loose scale. Condition preferred for further surface processing. 2 Zinc electroplated with a coating layer thickness of 8 m minimum
38、and an additional colourless chromating a . When minimum corrosion resist- ance is required. Not recommended for use with light alcohol-based fuels such as methanol. 3 Zinc electroplated with a coating layer thickness of 8 m minimum and an additional yellow chromating a . (4, 5, 6, 7, 8) (Reserved f
39、or further application.) 9 As specified subject to agreement. aChromating as described in ISO 2080 and ISO 4520.4 ISO 2016 All rights reservedBS ISO 8535-1:2016ISO 8535-1:2016(E) 5.5 Minimum mechanical properties of tubes The tubes shall comply with one of the classes of mechanical properties (codes
40、 1 to 4) as listed in Table 4. Table 4 Mechanical properties Code Minimum tensile strength R mN/mm 2 Minimum proof strength R p0,2N/mm 2 Minimum elongation A 5% Maximum hardness HV 1 310 205 30 115 2 360 220 23 150 3 490 355 22 194 4 600 430 15 280 5 750 670 10 310 6 850 770 8 340 NOTE The mechanica
41、l properties apply when the tube is tested in accordance with ISO 6507-1 and ISO 6892-1. 5.6 Cleanliness The bore shall be clean and free from any contamination or coating which would impair the processing and serviceability of the tubes. When specifying a cleanliness requirement for the inside of t
42、he tubes, ISO 12345 shall be used. 5.7 Straightness Unless otherwise agreed between supplier and customer, the tubes shall be straight within a maximum error of 1 in 400, with no localized deformation. 5.8 Corrosion resistance The outside and inside surfaces shall be protected against corrosion for
43、transportation and storage in closed areas. A permanent coating may be used on the outside surface when agreed between supplier and customer. Any temporary coating used shall not be injurious to the injection and combustion systems of the engine and shall be removable with diesel fuel. 6 Testing 6.1
44、 General Unless otherwise agreed between supplier and customer, tests shall be carried out in accordance with 6.2 to 6.8. 6.2 Scope of tests Tubes shall be tested by lots of the same dimensions, steel type, heat treatment and surface finish. Tubes from each heat of steel shall be tested irrespective
45、 of lot. For the test in 6.4, a test inspector shall select one tube from each lot, and for the test in 6.6, three tubes. The tests in 6.3, 6.7.1 and 6.8 shall be performed on all selected tubes. For the test in 6.7.3, the lot size, the number of samples and the acceptance limit shall be agreed upon
46、 between supplier and customer. ISO 2016 All rights reserved 5BS ISO 8535-1:2016ISO 8535-1:2016(E) 6.3 Dimension tests The tube dimensions shall comply with the dimensions and tolerances indicated in Clause 4. 6.4 Mechanical-property tests The tubes shall comply with the specifications given in Tabl
47、e 4. The tests shall be made in accordance with ISO 6507-1 and ISO 6892-1. Tensile strength, proof strength, elongation and hardness shall be measured. 6.5 Bending test The tube shall withstand cold bending through 180 over a rod of the same diameter as the tube outside diameter, without showing oth
48、er than outside superficial cracks. 6.6 Cold upsetting of tubes This test shall be carried out on tubes of outside diameter 15 mm and below. A length of tube twice the outside diameter (2D) shall be capable of being compressed to a length D without showing cracks of depths exceeding 0,13 mm. The tes
49、t shall be made between two plane and parallel plates in a suitable fixture. 6.7 Surface quality test 6.7.1 A visual check shall be made to ensure that tubes satisfy the requirements in 5.3.1. 6.7.2 If mutually agreed between supplier and customer, the visual inspection may be replaced by a non-destructive test procedure. 6.7.3 If proof of a specified defect depth in the bore is required, an inspection by attributes, with an agreed acceptable quality level (AQL) shall be set when o
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