1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2004 07 13 Revised Para 3.5 revised G. Stevens 2002 08 15 Revised Updated and renumbered 1995 04 24 Activated J. Gira KAG Printed copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 1 of 3 LUBRICANT, LIQUID, TIRE MOUNTIN
2、G WSS-M99B186-A 1. SCOPE The material defined by this specification is a ready-to-use glycol-based, liquid, synthetic lubricant of uniform composition. 2. APPLICATION This specification was released originally for material used as a lubricant for mounting tires. 3. REQUIREMENTS 3.1 STANDARD REQUIREM
3、ENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.2 COLOR Clear 3.3 pH, max 10.0 (ASTM E 70) 3.4 SURFACE TENSION, max 35 N/m (ASTM D 1331) 3.5 NON-VOLATILES, min 0.70% by wt. (ASTM D 460
4、, Method A) 3.6 EFFECT ON RUBBER, Volume Increase, max 7.00% 70 h at 23 +/- 2 C on R515 type natural rubber 3.7 SPECIFIC GRAVITY 1.00 - 1.02 (ASTM D 891, Method C) 3.8 VISCOSITY, seconds at 23 +/- 2 C, min 10.0 (ASTM D 1200, Ford #4 cup) ENGINEERING MATERIAL SPECIFICATIONWSS-M99B186-A Printed copies
5、 are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 2 of 3 3.9 CORROSION Ford Motor Company, at its option, may conduct corrosion testing on materials/parts supplied to this specification. No pitting, etching or visible corrosion on the surface of steel, brass, aluminum and tin plat
6、e. Test Method Clean 25 mm x 76 mm strips of metals to be tested. Strips shall be immersed one each in a 100 mL test tube containing 15 mL of lubricant test sample. The test tube shall be lightly stoppered with a cork stopper, supported in a beaker, then placed in an oven at 70 +/- 2 C for 70 h. The
7、 strips shall be examined under magnification of 20 diameters for evidence of corrosion. 3.10 COEFFICIENT OF STATIC FRICTION TEST 3.10.1 Wet, max 0.3 Test Procedure: A rubber test slab shall be prepared from unplasticized natural rubber sheet which conforms to compositions agreed upon between suppli
8、er and Ford Motor Company. The rubber test slab shall be 76 mm by 100 mm with a 3 mm diameter hole centered on a line 6 mm from one end. An additional steel test panel 152 mm by 152 mm by 1 mm (Parker or Q-panel-unpolished) shall be used as bottom plate for the test. Both the rubber test slab and th
9、e steel panels shall be thoroughly cleaned with water and given a rinse with isopropyl alcohol. A thin layer of lubricant shall then be applied to one surface of both the steel test panel and the rubber test slab. The steel test panels shall be clamped, lubricated side up, in a stationary position o
10、n a flat, horizontal surface and the rubber test slab shall be placed, lubricated side down, horizontally on the metal test panel. A steel plate, of known weight, measuring 75 mm by 100 mm shall be placed unlubricated on the top of the rubber test slab. A standard kilogram weight shall be placed on
11、top of, and centered on, the small steel plate. A cord of 305 mm to 610 mm in length is then attached through the hole in the rubber test slab. This cord shall be placed over a pulley which is so placed that the cord is held horizontally in line with the rubber test slab between the slab and the pul
12、ley. The pulley shall be of such construction and so lubricated as to turn freely under load. Force (weight) shall then be applied to the free end of cord in small increments not to exceed increases greater than 10 g per second, until the rubber test slab begins to slide. The coefficient of friction
13、 shall be calculated using the following formula: U = F/N Where F=Weight required to move one surface over the other U=Coefficient of static friction N=Total weight pressing the surfaces together 3.10.2 Dry, min 0.5 After rubber slab has been prepared according to para 3.10.1, allow to dry for 48 h
14、prior to testing in a humidity of approximately 50 +/- 10% at 23 +/- 2 C. ENGINEERING MATERIAL SPECIFICATIONWSS-M99B186-A Printed copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 3 of 3 3.11 EVAPORATION After dipping a rubber test slab in the uncut solution, it shall be hel
15、d vertical for 10 minutes, then placed horizontal for the remainder of the test. It shall retain a water wet surface, and after 30 minutes remain readily transferable (without rubbing) to a blotter or standard paper hand towel. The untouched portion of the panel shall retain all its lubricity as the
16、 evaporation proceeds for the next 30 minutes. After 48 hours the material shall be dry; that is, completely non-transferable to a blotter or standard paper hand towel when placed in contact with the material without rubbing. 3.12 FOAM Must not foam when sprayed on rubber any more than other materia
17、ls approved under this specification. 3.13 WETTING Shall be applied from a spray nozzle positioned from 100 mm to 150 mm away from the panel and provide a fully wet surface. The panel shall be held vertical for 10 minutes and then placed horizontally for 20 minutes. At the end of this time, the pane
18、l shall exhibit the retention of lubricant as described in para 3.8 and exhibit no voids or dry spots. 3.14 FREEZE-THAW STABILITY Using a closed glass vessel, a sample of the uncut material shall be frozen over a 24 h period to complete solidification. The sample shall then be removed to a 23 C envi
19、ronment and allowed to thaw without any physical agitation. Upon complete thawing, the material shall exhibit no evidence of separation or precipitation. 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. Material of the following composition have been found satisfactory. 4.1 LOSS ON DRYING (Moisture) 91.50% 4.2 POTASSIUM VEGETABLE OIL SOAP 1.00% 4.3 INSOLUBLE MATTER 0.50%
