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 ther
2、efrom, 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 2017 SAE International All rights reserved. No part of this
3、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: +1 724-776-49
4、70 (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:/standards.sae.org/J1706_201706 SURFACE VEHICLE RECOMMENDED PRACTICE J1706 JUN2017 Issued 1988-10 Revised 2017-06
5、 Superseding J1706 FEB2012 Production, Handling, and Dispensing of SAE J1703 Motor Vehicle Brake Fluids and J1704 Borate Ester Based Brake Fluids RATIONALE 3.2 Added text to align with J1707 paragraph 3.3.1 3.3 Added text to align with J1707 paragraph 3.3.4 Removed description of RM-66-05 fluid comp
6、osition which was not removed with the RM-66-05 to RM-66-06 change. 1. SCOPE This SAE Recommended Practice is intended to provide basic recommended practices for aid in the development and use of safe and efficient practices for all operations involving the production, handling, and dispensing of SA
7、E J1703 Motor Vehicle Brake Fluids and SAE J1704 Borate Ester Based Brake Fluids. SAE INTERNATIONAL J1706 JUN2017 Page 2 of 7 2. REFERENCES 2.1 Applicable Documents The following publications form a part of this specification to the extent specified herein. Unless otherwise indicated, the latest iss
8、ue of SAE publications shall apply. 2.1.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or +1 724-776-4970 (outside USA), www.sae.org. SAE J75 Motor Vehicle Brake Fluid Container Compatibility SAE J1703
9、 Motor Vehicle Brake Fluid SAE J1704 Borate Ester Based Brake Fluids SAE J1707 Service Maintenance of SAE J1703 and SAE J1704 Brake Fluids in Motor Vehicle Brake Systems 3. CONTAMINATION SAE J1703 and SAE J1704 brake fluids are susceptible to various types of contamination which can be detrimental t
10、o the safe and efficient performance of brake actuating systems. 3.1 Water Contamination SAE J1703 and SAE J1704 brake fluids are hygroscopic and absorb moisture when exposed to the atmosphere. The degree of moisture absorption is dependent upon a number of variables. Among these are the relative hy
11、groscopicity of the brake fluid, the area of the surface exposed to the atmosphere, the time of exposure, and the temperature and relative humidity of the atmosphere. Water contamination can also occur from condensation resulting from atmospheric temperature changes or the mechanical entrance of the
12、 free water. This water contamination will lower the Equilibrium Reflux Boiling Point (ERBP) (see Figure 1) and increase the Low Temperature Viscosity (see Figure 2) and impact inhibition of corrosion and elastomer compatibility performance. SAE INTERNATIONAL J1706 JUN2017 Page 3 of 7 Equilibrium Re
13、flux Boiling Point (ERBP) Performance of RM-66-06 brake fluid versus Water content Figure 1 - Equilibrium reflux boiling point Experimental Design I. Equilibrium Reflux Boiling Point (ERBP): Performance of RM-66-06 Brake Fluid versus Water Content Various amounts of water were added to RM-66-06 brak
14、e fluid The Equilibrium Reflux Boiling Point (ERBP) temperature on each sample was determined by the method described in the SAE J1703 standard. ERBP temperature values were plotted graphically versus Water content. All work was performed by ABIC Testing Laboratories, Inc. The actual ERBP values and
15、 water contents are shown below. % Water ERBP (C) % Water ERBP (C) 0.50 243 3.50 159 1.00 218 4.00 153 1.50 199 4.50 146 2.00 184 5.00 143 2.50 174 7.00 127 3.00 166 10.00 110 SAE INTERNATIONAL J1706 JUN2017 Page 4 of 7 SAE RM-66-06 Brake Fluid Viscosity at -40C(F) versus Percent Water Content 05001
16、00015002000250030000.00 2.00 4.00 6.00 8.00 10.00 12.00Percentage WaterViscosity (centistokes)Figure 2 - Low temperature viscosity Experimental Design II. Kinematic Viscosity: Performance of RM-66-06 Brake Fluid versus Water Content Various amounts of water were added to RM-66-06 brake fluid. The Ki
17、nematic Viscosity on each sample was determined by the method described in the SAE J1703 standard. Viscosity values were plotted graphically versus Water content. All work was performed by ABIC Testing Laboratories, Inc. The actual viscosity values and water contents are shown below. Viscosity Visco
18、sity % Water (mm2/s) % Water (mm2/s) 0.50 1176 3.50 1628 1.00 1305 4.00 1690 1.50 1304 4.50 1788 2.00 1538 5.00 1877 2.50 1464 7.00 2047 3.00 1523 10.00 2677 SAE INTERNATIONAL J1706 JUN2017 Page 5 of 7 3.2 Contamination with Petroleum Products Since motor vehicle brake fluids are handled and dispens
19、ed under conditions where contamination with petroleum products can occur, specific precautions must be taken to prevent contamination. Motor vehicle brake fluids contaminated by petroleum products will cause excessive swelling and softening of brake system rubber parts, resulting in brake system fa
20、ilure. Even very small contamination levels of brake fluids with petroleum products which are not visible may be detrimental to the rubber seals of a brake system. Only if higher concentrations are present, a contamination with petroleum type contaminants will become obvious by causing a visual clou
21、diness or opaque appearance of the brake fluid. 3.3 Particle Contamination Specific precautions must be taken to prevent contamination of motor vehicle brake fluids with particles or solid material of any sort which could interfere with the proper operation of the braking system components. In parti
22、cular, abrasive particles will cause scuffing and wear of the pistons and cylinders and can damage the elastomer seal materials. Furthermore, single bigger particles may cause internal leakage of seals or hydraulic valves, followed by pressure loss and malfunction of the brakes. 4. RECOMMENDATIONS 4
23、.1 Material Control - Raw Materials a. Material specifications should be established for all ingredients of the brake fluid formulation. b. Purchase specifications should include required chemical and physical tests to be performed on each lot of material. c. Inbound inspection and testing requireme
24、nts are to be identified with pass and fail limits. d. Certificate of Analysis to be forwarded before or with each delivery. e. Inbound receipts are to be quarantined until inbound testing and/or review of Certificate of Analysis is completed and product is approved for production. f. Chemical and p
25、hysical tests may be required to ensure that specifications are met. g. Finished product reports should report lot numbers of each component. 4.2 In-Processing Blending Lines and Finished Product Loading Lines a. Processing equipment used in the manufacture of a brake fluid is to be controlled to in
26、sure final quality of material is maintained. b. Use of dedicated storage tanks, pumps, transfer and filling lines is suggested for each fluid components and final brake fluids. c. Materials of construction are to be compatible with all fluid contact in both intermediate and final fluids. d. Brake f
27、luids are hygroscopic. The manufacturing operations should have in-process guidelines to minimize the water content of finished brake fluid. 4.3 Cleaning Processes - Storage Tanks, Process Lines and Final Discharge Lines a. All component lines and blending tanks must be clean, dry and odor free befo
28、re use in the manufacture of brake fluid. b. Component lines are to be filled. After 48 hours, product is tested at the discharge or transfer point for physical and chemical properties before being placed in service for brake fluid manufacture. c. Component and finished product lines are to be cover
29、ed when not in use to maintain product integrity. SAE INTERNATIONAL J1706 JUN2017 Page 6 of 7 d. Storage tanks must be clean, dry, and odor free before being placed in component of finished brake fluid service. e. Before Storage tank(s) are put into service pre-inspection is critical. One procedure
30、is to pour previously tested finished fluid on the side wall, collected and tested to assure no contaminate is present. Additionally, introducing fluid on the tank floor and allowing it to collect and stand at the low point for a reasonable time. The product is then tested to assure no contaminants
31、are present. f. Storage tanks should be protected from additional moisture pickup. Purging tanks with dry air or nitrogen before filling is recommended. Further protection may be with desiccants on any atmospheric air vents. Further protection may be with dry air or nitrogen pads on tank. 4.4 Materi
32、al Handling Finished Brake Fluids a. Whenever possible bulk containers for storage and shipping should be restricted to the same grade of brake fluid. b. Tank Trucks are to be clean, dry and odor free before loading. Discharge lines, when present, should be flushed and material quality verified befo
33、re loading. Compartment cover(s) on top of tank should be covered as much as possible to limit exposure to airborne particles or moisture. c. Tank cars should be drained and material tested, if acceptable, loaded. Purging with dry air or nitrogen before loading is recommended. Compartment cover(s) o
34、n top of tank should be covered as much as possible to limit exposure to airborne particles or moisture. d. New clean drums are to be used for brake fluid. Material of construction and lining, if present, must be compatible with the fluid. If the drum manufacturer uses a sealing compound it must be
35、first checked for product compatibility before brake fluid is filled into containers. Purchase Orders are to specify compound required. e. All filling lines are to be tested before any loading starts. f. Brake fluid should be filtered through a suitable filter, 10 microns or less, before any filling
36、 operation. Filters should be as close to discharge lines as possible. g. Extreme care must be exercised in transferring fluid from its original container. h. Inbound bulk vessels sampling is recommended from the discharge line. A Certificate of analysis should be available at time of discharge Samp
37、le appearance should be checked before unloading. The supplier may provide recommended inbound inspection procedures for discharge of bulk vessels. i. The possible toxicity hazard and environmental effects of motor vehicle brake fluid must be considered in terms of any applicable laws or regulations
38、. 4.5 Records and Retain Samples a. A record of every blend manufactured is to be traceable to all raw materials, by raw material lot number. b. Retain samples of all blends, bulk shipments and packaging runs are to be retained for five full calendar years. 4.6 Dispensing of Brake Fluids a. Contact
39、of any petroleum product with any dispensing devices MUST be avoided. This includes drum and pail nozzles or spouts. b. Avoid multiple transfers of the fluid from container to container. The fluid should be transferred directly from the shipping container to the reservoir. If it is necessary to tran
40、sfer fluid to a smaller container, from a drum or pail, it is recommended to use a compatible disposable container, of small enough size for immediate filling of reservoir(s). Upon completion of filling reservoir(s) fluid is to NOT to be returned to the original container. SAE INTERNATIONAL J1706 JU
41、N2017 Page 7 of 7 5. NOTES 5.1 Revision Indicator 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
42、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 BRAKE FLUIDS STANDARDS COMMITTEE OF THE HYDRAULIC BRAKE AND ACTUATION STEERING COMMITTEE
