1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Action Changes1990 02 01 C01031532 Released B. Lange concurred J. SchultWP 3948-a Page 1 of 6 SEALANT, FLANGE, ANAEROBIC, FOR SCREEN PRINTING WSK-M4G326-A11. SCOPEThe material defined by this specification is based on a di-met
2、hacrylateester resin which hardens to a polymeric solid in the absence of air oroxygen. Contact with active metal parts or elevated temperatures acceleratethe cure speed. The product is designed for low tensile strength to makedisassembly of parts easy.2. APPLICATIONThis specification was released o
3、riginally to seal case trans-axle clutchby using either nozzle dispensing or screen printing equipment and isapplicable for gap sizes up to 0,15 mm. When applied to threads a maximumgap of 0,3 mm is acceptable.3. REQUIREMENTS3.1 STATISTICAL PROCESSSuppliers must conform to the requirements of Ford Q
4、uality SystemStandard Q-101. A mutually acceptable Control Plan as describedtherein is required for material/source approval. Appropriatestatistical tools must be used to analyze process/product data sothat variation in the final product is continuously reduced.3.2 INFRARED SPECTROPHOTOMETRY AND/OR
5、THERMAL ANALYSISFord Motor Company, at its option, may conduct infrared and/orthermal analysis of material/parts supplied to this specification.The IR spectra and thermograms established for initial approval shallconstitute the reference standard and shall be kept on file at thedesignated material l
6、aboratory. All samples shall produce IR spectraand thermograms that correspond to the reference standard when testedunder the same conditions.3.3 CONDITIONING AND TEST CONDITIONSAll test values indicated herein are based on material conditioned ina controlled atmosphere of 23 +/- 2 C and 50 +/- 5 %
7、relativehumidity for not less than 24 h prior to testing and tested under thesame conditions unless otherwise specified.NOT TO BE USED FOR NEW DESIGN2014 N Status No replacment named L. Sinclair, NAENGINEERING MATERIAL SPECIFICATIONWSK-M4G326-A1WP 3948-b Page 2 of 6 3.4 UNCURED MATERIAL PROPERTIES3.
8、4.1 Color White, fluorescent or a s specifiedon Engineering Drawing3.4.2 Density at 23 C 1,00 +/- 1,15 kg/L(ASTM D 1475)3.4.3 Viscosityat 1 rpm 180 - 280 Pasat 2,5 rpm 120 - 180 Pasat 5 rpm 70 - 120 PasTest Method:1. Brookfield viscometer RVT, helipath stand, spindle no.T/C;2. Condition the material
9、 under test at 23 C and let thematerial stand for 30 minutes.3. Start measuring with undisturbed material at a dippingdepth for the spindle of 25 mm at 1 rpm.4. Take three readings, then move the spindle to the 50 mmdipping depth, take three readings the same way atfrequencies of 2,5 rpm and 5 rpm.5
10、. Record the values for each frequency and spin dle position.6. The calculated average for each frequency sha ll conform tothe requirements specified above.3.4.4 Miscibility with Transmission FluidThere mu st not be a measurable rheological effect when themateri al is dissolved in transmission fluid
11、 up to 1 % byweight.3.4.5 Compatability with Screen MaterialsThere must not be a visible effect on coating of screen andscreen fibre material after 72 h contact with sealermaterial.3.4.6 Open TimeAfter c oating a degreased mild steel surface with thema terial under test, the sealant must not set whe
12、n leftexposed at standard conditions for 72 h.ENGINEERING MATERIAL SPECIFICATIONWSK-M4G326-A1WP 3948-b Page 3 of 6 3.4.7 QualityThe material shall be a smooth homogeneous mixtu re, free fromforei gn materials that may be detrimental to normalproduction use.3.4.8 Storage Stability 3 months(From date
13、of receipt at Ford Motor Company)Aft er storage between 5 and 32 C in sealed unopenedcontainers with a minimum content of 250 ml and out of directsunli ght the material must pass all specificationrequirements.3.5 CURED MATERIAL PROPERTIES3.5.1 Shear Strength 10 - 15 Pa(DIN 54452)Test Method: Sleeves
14、 and pins are degreased, sealant isapplied to the pin and the inside of the sleeves , and the twoparts fitted together within one minute; conditi on 72 h. Themaximum load necessary to press out the pin is measured at afeed rate of 15 mm/minute is recorded. The shea r strength isthen calculated on th
15、e contact area of the pin t o sleeve (seeFig. 1).3.5.2 Aged Shear StrengthSamples are to be exposed to each of the followingenvironments after curing 72 h at standard conditions.3.5.2.1 Heat Aged, max No loss from(14 d at 90 +/- 2 C, 3.5.1 value1 h at RT)3.5.2.2 Heat Aged, max - 30 % loss from(14 d
16、at 90 +/- 2 C, 3.5.1 valuemeasured at 90 +/- 2 C)3.5.2.3 Immersion in Currently - 20 % loss fromApproved Transmission 3.5.1 value Fluid, max(14 d at 130 +/- 2 C andmeasured at 23 +/- 2 C;see para 5.2)3.5.2.4 Immersion in Currently - 20 % loss fromApproved Transmission 3.5.1 valueFluid, max(2 h at 15
17、0 +/- 2 C,and measured at 23 +/- 2 C;see para 5.2)ENGINEERING MATERIAL SPECIFICATIONWSK-M4G326-A1WP 3948-b Page 4 of 6 3.6 ADDITIONAL REQUIREMENTSSpecific requirements for material and/or manufa ctured parts shall bespecified on the Engineering drawing, Engineerin g parts specificationand/or perform
18、ance specifications. All critical areas with respect tothese properties shall be clearly designated on the engineeringdrawing.3.7 SUPPLIERS RESPONSIBILITYAll materials supplied to this specification must be equ ivalent in allchar acteristics to the material upon which approval was originallygranted.
19、Pri or to making any changes in the properties, composition,const ruction, color, processing or labelling of the materialorigi nally approved under this specification, whether or not suchchanges affect the materials ability to meet the specificationrequirements, the Supplier shall notify Purchasing,
20、 Toxi cology and theaff ected Materials Engineering activity of the proposed changes andobta in the written approval of the Materials Engineering activity.Test data , test samples and a new code identification are to besubmitted with the request.Substance restrictions imposed by law, regulations or
21、Ford isapp licable to the materials addressed by this document. Therestrictions are defined in Engineering Material SpecificationWSS-M99P9999-A1, unless a different suffix (e.g., A2 or A3) isspecified on the engineering document for the application.4. APPROVAL OF MATERIALSMaterials defined by this s
22、pecification must have prior approval by therespon sible Materials Engineering activity. Suppliers desiring approval oftheir mat erials shall first obtain an expression of interest from theaffe cted Purchasing, Design and Materials Engineering activity. Uponrequest, the supplier shall submit to the
23、affected Materials Engineeringactivi ty its own laboratory report to the specification (test results, notnominal values), the material designation and code number, and testspecimens for Ford evaluation. Upon approval, the material will be added tothe Engineering Material Approved Source List. 5. GEN
24、ERAL INFORMATIONTh e information below is provided for clarification and assistance inmeeting the requirements to the specification.5.1 MESH OPENING OF SCREENMesh opening of screen has to be adjusted on particle si ze of materialthat no decompounding of sealer will result during production use.ENGIN
25、EERING MATERIAL SPECIFICATIONWSK-M4G326-A1WP 3948-b Page 5 of 6 The following Materials Enginee ring offices may be contacted for additionalinfor mation on currently approved transmission fluids (paragraphs 3.5.2.3and 3.5.2.4).5.2 Materials Laboratory 13/100 Transmission & Axle Engrg.Research and En
26、gineering Center Materials EngineeringFord Motor Company, Ltd Ford Motor CompanyLaindon, Basildon, P.O. Box 2097Essex SS15 6EE, England 36200 Plymouth RoadLivonia, MI 48151, USAMaterials EngineeringProduct Engineering OfficeFord Motor Co. of Australia Ltd.Princes Highway, NorlaneVictoria 3214, AustraliaENGINEERING MATERIAL SPECIFICATIONWSK-M4G326-A1WP 3948-b Page 6 of 6 FIGURE 1 Steel 9S Mn 28 DIN 1651 Pb 0,35 % max or BS 970 Pt 1 1983 220 Mo 7, 230 Mo 7, Pb 0,35 % max
