1、 SURFACE VEHICLE RECOMMENDED PRACTICE J1333 MAR2015 Issued 1990-03 Revised 2015-03 Superseding J1333 MAR1990 Hydraulic Cylinder Rod Corrosion Test RATIONALE This document has been updated with minor corrections and ISO references. The bulk of the document remains relevant and unchanged. 1. SCOPE SAE
2、 J1333 applies to hydraulic cylinders which are components of self-propelled work machines defined in SAE J1116. 1.1 Purpose The purpose of SAE J1333 is to provide a laboratory method for determining the capacity of a hydraulic cylinder rod to resist corrosion, and the other cylinder components to w
3、ithstand corrosion of the cylinder rod. 2. REFERENCES 2.1 Applicable Publications The following publications form a part of this specification to the extent specified herein. Unless otherwise indicated, the latest version of SAE publications shall apply. 2.1.1 SAE Publications Available from SAE Int
4、ernational, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org. SAE J1116 Categories of Off-Road Self-Propelled Work Machines SAE J1276 Standardized Fluid for Hydraulic Component Tests SAE J1336 Hydraulic Cylinder L
5、eakage Test _ 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 a
6、rising therefrom, 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 2015 SAE International All rights reserved. No pa
7、rt of this publication 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
8、 724-776-4970 (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/J1333_201503 SAE INTERNATIONAL J1333 Revised MAR2015 Page 2 of 4 2.1.
9、2 ISO Publications Available from American National Standards Institute, 25 West 43rd Street, New York, NY 10036-8002, Tel: 212-642-4900, www.ansi.org. ISO 4406 Hydraulic fluid power - Fluids - Method for coding the level of contamination by solid particles 2.1.3 ASTM Documents Available from ASTM I
10、nternational, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959, Tel: 610-832-9585, www.astm.org ASTM B 117 Method of Salt Spray (Fog) Testing ASTM B 368 Method for Copper-Accelerated Acetic Acid-Salt Spray (Fog) Testing (CASS Test) 3. DEFINITIONS 3.1 AVERAGE CYLINDER ROD VELOCI
11、TY The sum of twice the stroke length divided by the sum of the movement time for the rod to extend and retract. 3.2 CYCLE One extension and retraction of the cylinder rod for a specified stroke length. 3.3 CYCLE RATE The number of cycles per unit of time. 3.4 RATED PRESSURE The continuous duty oper
12、ating pressure specified by the manufacturer. 3.5 SIDE LOAD A continuous force which is in a direction, unless otherwise specified, perpendicular to the axial loading or the cylinder to simulate loading due to external forces on the cylinder as defined by the user. 3.6 STROKE LENGTH The total distan
13、ce traveled by the piston in completing one-half cycle. SAE INTERNATIONAL J1333 Revised MAR2015 Page 3 of 4 4. TESTING CONDITIONS 4.1 Accuracy of Measurement The accuracy of measurement unless otherwise stated shall be as follows: a. Temperature 3 C (5 F) b. Pressure 2% c. Leakage 2% d. Time 2% e. L
14、ength 2% 4.2 Test Fluids The test fluid shall be SAE J1276 unless otherwise specified. 4.3 Fluid Test Temperature The fluid test temperature, measured in the supply line, shall be 50 C (122 F) or 110 C (230 F) or as agreed between user and supplier. 4.4 Test Pressure Operational test pressure shall
15、be the manufacturers rated pressure and measured at the cylinder work ports. A 10% transient overshoot is permissible unless another amount is agreed upon by the user. 4.5 Pressure Rise Rate The pressure rise rate shall be a minimum of 150 MPa (21 755 psi) per second: 4.6 Contamination Level Test sy
16、stem shall have a contamination level not to exceed ISO 4406 solid contaminant code -/19/16. 4.7 Stroke Length The length of stroke for the operational test shall be equal to at least 15% of the maximum stroke length of the hydraulic cylinder. 4.8 Cycle Rate The cycle rate shall be as specified by t
17、he manufacturer. 5. TEST EQUIPMENT 5.1 Salt-Fog Chamber Use a salt-fog chamber having an atomizer and air circulating system, see ASTM B 117. 5.2 Test Fixture Use a suitable test fixture, for example, an oscillating beam type, a conventional in-line beam type, or similar fixture, in which the test c
18、ylinder can be loaded and driven in either direction under both static and dynamic conditions with a side load. SAE INTERNATIONAL J1333 Revised MAR2015 Page 4 of 4 6. TEST PROCEDURE 6.1 Connect test cylinder to a fluid power source and cycle at maximum stroke a minimum of 20 cycles to displace the t
19、rapped air and install it in the cycle test stand. 6.2 Cycle the cylinder against the side load for 1000 cycles and perform a 1000 cycle rod seal dynamic leakage test in accordance with SAE J1336. 6.3 Remove the cylinder from the test fixture. In a fully extended position, prepare the rod surface as
20、 defined in ASTM B 117 or ASTM B 368. Subject the fully extended rod to a salt-fog environment in accordance with the selected test for 24 h minimum, unless otherwise specified. Define the rod surface condition at completion of exposure in accordance with the selected test method. Use photographs as
21、 required. 6.4 Following exposure test, do not clean rod. Reinstall cylinder (do not clean rod) in same fixture used for 6.2. 6.5 Cycle the cylinder against the side load at rated conditions for 10 000 full stroke cycles. 6.6 Perform a rod seal dynamic leakage test in accordance with SAE J1336 durin
22、g the final 1000 cycles. 6.7 Record the test used, exposure duration, and rod seal dynamic leakage coefficients in accordance with SAE J1336. 7. NOTES 7.1 Marginal Indicia The change bar (l) located in the left margin is for the convenience of the user in locating areas where technical revisions have been made to the previous issue of the report. An (R) symbol to the left of the document title indicates a complete revision of the report. PREPARED BY THE SAE CTTC C1 HYDRAULIC SYSTEMS COMMITTEE
