FORD WSK-M6J167-A-2012 PRIMER STONE CHIP PROTECTION 35 MICROMETRE TO BE USED WITH FORD WSS-M99P1111-A .pdf
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1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Release No. Release/Revision1990-11-02 EP00E01031541000 Released KW conc. J.SchultWP 3948-a Page 1 of 6 PRIMER, STONE CHIP PROTECTION, 35 MICROMETREWSK-M6J167-A1. SCOPEThe mat erial defined by this specification is a solvent b
2、ased stone peckprotective baking primer for exterior automotive applications.2. APPLICATIONThis specification was released originally for material used as stone chipprotec tion primer over baked EC surfaces on engine hoods to improve stonechip r esistance. The material is designed for baking togethe
3、r with primersurfacer.3. REQUIREMENTS3.1 STATISTICAL PROCESSSupplie rs must conform to the requirements of Ford Quality SystemStanda rd Q-101. A mutually acceptable Control Plan as describedth erein is required for material/source approval. Appropriatestatist ical tools must be used to analyze proce
4、ss/product data sothat variation in the final product is continuously reduced.3.2 INFRARED SPECTROPHOTOMETRY AND/OR THERMAL ANALYSISFord Motor Company, at its option, may conduct infrared and/ortherma l analysis of material/parts supplied to this specification.The IR spectra and thermograms establis
5、hed for i nitial approval shallconst itute the reference standard and shall be kept on file at thedesignated material lab oratory. All samples shall produce IR spectraand thermograms that correspond to the reference standard when testedunder the same conditions.3.3 CONDITIONINGAll test values indica
6、ted herein are based on ma terial conditioned ina control led atmosphere of 23 +/- 2 C and 50 +/- 5 % relativehumidity for not less than 24 h prior to testing and tested under thesame conditions unless otherwise specified.3.4 COMPOSITION3.4.1 Resin: PU - modified solvent borne synthetic resins.3.4.2
7、 Pigments: Pigments and fillers to obtain the desired colourand resistance properties.ENGINEERING MATERIAL SPECIFICATIONWSK-M6J167-AWP 3948-b Page 2 of 6 3.4.3 Solvent Emissions see Initial Sample +/- 1 %(ASTM D 3960)This r equirement is as determined by the United StatesEnvironmental Protection Age
8、ncy Reference Method #24 and isonly applicable to materials used in the USA.3.5 MATERIAL PROPERTIES3.5.1 Non-volatile see Initial Sample +/- 2 %;(FLTM BI 102-01) min 55 %The n on-volatile content shall be determined at a sprayviscosity of 35 s according to para 3.5.4.3.5.2 Density see Initial Sample
9、 +/- 0,02 g/mL(ASTM D 1475)3.5.3 Viscosity as supplied see Initial Sample +/- 5 s(FLTM BI 111-01)3.5.4 Spray Viscosity as specified by the supplier(FLTM BI 111-01, FC #4)The material can be reduced with Xylene (WSK-M14J239-A).3.5.5 Storage Stability: 90 daysDuri ng a storage of 90 days between 5 and
10、 32 C temperaturethe m aterial as supplied shall not settle up or cakeinsol uble. After the storage the material must pass allspecification requirements.3.6 PREPARATION OF TEST PANELS(FLTM BI 103-02, Method B,b)3.6.1 Substrates as specified on Engineering Drawing.- Standard Steel Panels- Precoated S
11、teel Panels as used in the plantAll subs trates shall be zinc phosphated and conform to therequirements of WSK-M3P1-C.3.6.2 Cathodic Electrocoat:Ford Engineering approved current production electrocoatpr imer, application and film thickness as specified in therelevant material specification.3.6.3 St
12、one Chip Primer:Dry film thickness: 25 - 45 micrometreFlash off time: 1 minuteENGINEERING MATERIAL SPECIFICATIONWSK-M6J167-AWP 3948-b Page 3 of 6 Wet on wet application of Ford Engineering approved currentprodu ction primer surfacer, film thickness as specified inthe relevant material specification.
13、Flash off time: 3 minutesBaking: 5 minutes 165 C metal temperature5 minutes 190 C metal temperature3.6.4 Top Coat:App lication of current approved black, white and two coatsilve r metallic top coats; Film thickness and baking asspecified in the relevant paint material specification.3.6.5 Ageing:Test
14、 panels prepared under this specification shall be agedfor at least 72 h at 23 +/- 2 C or 16 h at 45 +/- 1 C beforetesting for resistance properties.3.7 APPEARANCE (Primer only)Col our, gloss and surface finish shall match master Trim Sampleand/or Master Appearance Sample as approved by Design.3.7.1
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