1、_ SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising there
2、from, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions. Copyright 2013 SAE International All rights reserved. No part of this p
3、ublication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-497
4、0 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/J2006_201302 SURFACE VEHICLE STANDARD J2006 FEB2013 Issued 1995-09 Revised 2013-0
5、2 Superseding J2006 OCT2003 Marine Exhaust Hose RATIONALE This document is being modified in order to update the ozone test concentration to be consistent with other marine hose related test specifications. Specifications including SAE J1527 and ISO 7840 require an ozone test concentration of 100 mP
6、a (100 pphm). This concentration will be incorporated into SAE J2006. 1. SCOPE This SAE Standard covers the flexible components of marine engine wet exhaust systems from the connection at the engine exhaust manifold to the hull or overboard discharge fittings. 2. REFERENCES 2.1 Applicable Documents
7、The following publications form a part of this specification to the extent specified herein. Unless otherwise indicated, the latest issue of SAE publications shall apply. 2.1.1 ASTM Publications Available from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959
8、, Tel: 610-832-9585, www.astm.org ASTM D 380 Standard Test Methods for Rubber Hose ASTM D 412 Standard Test Methods for Vulcanized Rubber and Thermoplastic Elastomers Tension ASTM D 413 Standard Test Methods for Rubber Property - Adhesion to Flexible Substrate ASTM D 1149 Test Method for Rubber Dete
9、rioration Surface - Ozone Cracking in a Chamber SAE J2006 Revised FEB2013 Page 2 of 5 2.1.2 ISO Publications Available from International Organization for Standardization, 1 rue de Varembe, 1211 Geneva 20, Switzerland. (Also available from American National Standards Institute, 25 West 43rd Street,
10、New York, NY 10036.) ISO 1402 Rubber and Plastic Hoses and Hose Assemblies - Hydrostatic Testing ISO 1817 Rubber, Vulcanized - Determination of the Effects of Liquids ISO 7326 Rubber and Plastics Hoses - Assessment of Ozone Resistance Under Static Conditions 3. HOSE CONSTRUCTION 3.1 Style R1 (Softwa
11、ll) Construction of this hose embodies a smooth bore polymer tube, reinforced with one or more plies of synthetic fabric and finished with a cover which meets all the sections of this document except Section 8. 3.2 Style R2 (Hardwall) Construction of this hose embodies a smooth bore polymer tube, re
12、inforced with one or more plies of synthetic fabric and rigid helix imbedded within a polymeric media and finished with a cover which meets all the sections of this document. 3.3 Style R3 (Flexible Connectors) Construction of this connector consists of a polymer resistant to ozone and heat, with or
13、without reinforcing or abrasion resistant cover, which is intended for use in short sections in locations where the connector is protected from mechanical damage. These flexible connectors must meet Sections 4, 5, 6, 7, and 9 of this document. 4. BURST TEST The minimum burst per ASTM D 380 or ISO 14
14、02 shall be 250 kPa (36 psi). 5. TENSILE STRENGTH AND ELONGATION PER ASTM D 412 OR ISO 37 Test specimens shall be obtained from production hose samples. a. Original tensile strength of cover: 7.0 MPa (1020 psi) minimum b. Original tensile strength of tube: 8.0 MPa (1160 psi) minimum c. Original elon
15、gation of tube and cover: 200% minimum 6. ADHESION TEST The minimum load required to separate a 25 mm (1 in) width of tube, plies, and cover at 23 C 2 C (73 F 3.6 F) per ASTM D 413 shall be 54 N (12 lb). SAE J2006 Revised FEB2013 Page 3 of 5 7. OZONE RESISTANCE Test procedure and apparatus shall be
16、in accordance with ASTM D 1149 or ISO 7326 where applicable. Prepare a specimen by cutting a strip of whole hose 13 mm wide x 100 mm long (0.5 x 4 in), tie the specimen, cover out, around a mandrel with a diameter equal to approximately one-half the hose diameter. After mounting, the specimen shall
17、be allowed to rest in an ozone-free atmosphere for 24 h at 23 C 2 C (73 F 3.6 F). The mounted specimen shall be placed in a test chamber with an ozone concentration of 100 mPa 5 mPa (100 pphm 5 pphm) at a temperature of 40 C 2 C (104 F 3.6 F). After 70 h of exposure, the specimen shall be removed an
18、d allowed to cool to a temperature of 23 C 2 (73 F 3.6) and then inspected. The specimen shall be visually inspected under 7X magnification and must meet a “zero” rating except for the area immediately adjacent to the wire, which shall be ignored. This test applies to the cover only of hose manufact
19、ured with a cover and Style R3 hose that does not have a cover. For hose with a cover, cracks in the exposed tube and cut edges of the cover shall be ignored. 8. ABRASION TEST Style R2 Only 8.1 Principle Three individual 38 mm (1-1/2 in) ID hoses of identical construction shall be selected for a tes
20、t lot. These hoses shall incorporate a cover compounded and constructed the same as for all other sizes to be qualified by this test lot. Hose to be qualified by this test lot shall not have a cover thickness less than those of the test lot. After 1000 test cycles, each hose in the test lot shall no
21、t have any rigid helix exposed. 8.2 Procedure The test hoses shall be preconditioned for at least 24 h at 23 C 2 C (73 F 3.6 F) and 50% 5% relative humidity. Testing shall then be performed at the above temperature with an unused abrasive surface for each hose sample. The test hose shall be mandrel
22、supported and rotated at a constant speed of 80 rpm 2 rpm. The rotating hose shall be subjected to a laterally moving abrasive surface (80 grit, coarse, AL2O3 emery cloth) parallel to the longitudinal axis of the test hose. The abrasive surface shall be 25 x 75 mm 5 mm (1 x 3 in 0.25 in) firmly affi
23、xed to a hard surface which will cycle back and forth 75 mm 5 mm (3 in 0.25 in) in each direction. A constant normal force of 45 N 0.5 N (10 lb 2 oz) shall be applied to the abrasive surface. One test cycle equals 360 degrees rotation of the outside diameter and one back and forth movement of the ab
24、rasive surface. See Figure 1 for a typical apparatus. SAE J2006 Revised FEB2013 Page 4 of 5 FIGURE 1 - TYPICAL TEST APPARATUS 9. HIGH TEMPERATURE TEST 9.1 Principle Exhaust hoses shall withstand the following high temperature and pressure test without leakage, delamination, or exposure of the reinfo
25、rcement that would release exhaust gas, flame, or burning particles to the atmosphere. The test may be conducted on a representative size of hose to qualify other sizes of similar construction with equal or greater wall thickness. 9.2 Procedure A test exhaust hose shall be connected to an actual or
26、simulated engine exhaust system. Unless the hose is a molded shape, it shall be installed as a straight section. The test hose shall be subjected to 2 min of exhaust gas flow of 580 C (1075 F) measured at the center and within 100 mm of the inlet to the hose. The exhaust gas velocity during the test
27、 shall not be less than 1500 m/min (4900 ft/min). After the 2 min test, the hose shall be cooled with water or allowed to cool normally to room temperature and then subjected to an internal air pressure of 75 kPa (10 psi) per ASTM D 380 or ISO 1402 for 1 min without leakage. SAE J2006 Revised FEB201
28、3 Page 5 of10. MARKINGS The outer surface of the hose shall be continuously marked with the following information in block capitals and numerals at least 3 mm (0.12 in) high. 10.1 SAE J2006. 10.2 The words “MARINE WET EXHAUST.” 10.3 The year in which the hose was manufactured. 10.4 The manufacturers
29、 or private labelers name or registered trademark. 11. NOTES 11.1 Marginal Indicia A change bar (l) located in the left margin is for the convenience of the user in locating areas where technical revisions, not editorial changes, have been made to the previous issue of this document. An (R) symbol to the left of the document title indicates a complete revision of the document, including technical revisions. Change bars and (R) are not used in original publications, nor in documents that contain editorial changes only. PREPARED BY THE SAE MARINE ENGINE FUEL SYSTEMS COMMITTEE
