1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Release No. Release/Revision1992 05 04 EP00E01076267000 Revised, version A added K. Wolters1991 10 01 EP00E01089489000 Complete revise K. Wolters1989-07-12 SM/EQ 7602 TP Released D-MB/PQ-13WP 3948-a Page 1 of 9 PRIMER, WATERBO
2、RNE CATHODIC ELECTROCOAT, WSK-M64J29-A125 MICROMETRE FILM BUILD, BLACK,175 C BAKING TEMPERATURE, INITIAL FILLMAKEUP FEED, WATERBORNE CATHODIC ELECTROCOAT, WSK-M64J29-A2RESINMAKEUP FEED, WATERBORNE CATHODIC ELECTROCOAT, WSK-M64J29-A3PIGMENT, BLACKPRIMER, WATERBORNE CATHODIC ELECTROCOAT, WSK-M64J29-C1
3、25 MICROMETRE FILM BUILD, GRAY,175 C BAKING TEMPERATURE, INITIAL FILLMAKEUP FEED, WATERBORNE CATHODIC ELECTROCOAT, WSK-M64J29-C2RESINMAKEUP FEED, WATERBORNE CATHODIC ELECTROCOAT, WSK-M64J29-C3PIGMENT, GRAY1. SCOPETh e materials defined by these specifications are non-yellowing cathodicelect rocoat p
4、rimer for nominal 25 micrometre film build and associatedmake-up feed components.2. APPLICATIONThese sp ecifications were released originally for a paint system used aselect rocoat primer on vehicle bodies, sheet metal components and smallparts. The primer will provide good corrosion resistance , go
5、od adhesion andenamel appearance properties.WSK-M64J29-A1/WSK-M64J29-C1:Thi s primer is applied directly over zinc phosphated cold rolled steel,electrodeposited zinc or zinc/n ickel alloy coated steel and any other typeof precoated steel, as well as to aluminum substrates. T ypical applicationsare a
6、s follows:. Visible Exterior Surfaces:The electrocoated primer fil m will be followed by a primer surfacer andan exterior enamel colour coat. The electrocoat prim er, primer surfacerand enamel are all baked separately. Visible Interior Surface:The backed electrocoated primer film is followed by an e
7、namel colourcoat. Non-visible Interior, Exterior or Underbody Surfaces:The baked electrocoated primer film is not usually followed by anadditional primer or enamel colour coat.ENGINEERING MATERIAL SPECIFICATIONWSK-M64J29-A1/A2/A3/C1/C2/C3 WP 3948-b Page 2 of 9 WSK-M64J29-A2/WSK-M64J29-C2:This materi
8、al is make-up feed m aterial used to replenish the resins of theinitial fill electrocoat bath.WSK-M64J29-A3/WSK-M64J29-C3:This ma terial is make-up feed material used to replenish the pigments ofthe initial fill electrocoat bath.3. REQUIREMENTSWSK-M64J29-A1/WSK-M64J29-C1:The cat hodic electrocoat pr
9、imer shall meet all detailed requirements ofthis specification.WSK-M64J29-A2/C2/WSK-M64J29-A3/C3:The make-up feed materials shall meet the requirements o f para 3.2 and 3.4.When f eed material is used in production, the resultant primer shall meetall detailed requirements of this specification.3.1 S
10、TATISTICAL 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 process/product data sothat variation in the fi
11、nal product is continually 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 established for i nitial approval shallconst itute
12、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 indicated herein are based on ma terial condition
13、ed 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 Density S ee Initial Sample(ASTM D 1475) +/- 0.02 g/mL3.4.2 Non-volatile S ee Initial Sample(FLTM BI
14、 120-08) +/- 1 %3.4.3 Weight Loss after baking See Initial(FLTM BI 120-15, 10 minutes at 175 C) Sample, +/- 0.5 %ENGINEERING MATERIAL SPECIFICATIONWSK-M64J29-A1/A2/A3/C1/C2/C3 WP 3948-b Page 3 of 9 3.4.4 Solvent Emissions, max See Initial Sample +/- 1 %(ASTM D 3960)This r equirement is as determined
15、 by the United StatesEnvironmental Protection Agency Reference Method #24 but isonly applicable to materials used in the USA.3.5 STABILITY3.5.1 Pumping Stability 7 and 21 days(FLTM BI 120-04 or equivalent equipment) After 7 and after 21 days of agitation, the bath materialshall meet the requirements
16、 of this specification.3.5.2 Storage Stability 2 monthsDuring the storage between 5 and 32 C temperatur e the make-upfeed materials as supplied shall not settle up or cakeinsoluble.3.6 PREPARATION OF TEST PANELS(FLTM BI 103-02)Te st panels shall be prepared according to FLTM BI 103-02, methodB,2, fo
17、r all investigations with the following c oating conditions andfilm thickness requirements, unless otherwise specified:Coating class: I II IIIFilm Thickness:E-coat Primer 23 - 25 23 - 25 23 - 25Primer Surfacer - - 20 - 25Enamel Topcoat - 40 - 50 40 - 503.6.1 Substrates (Ref. Para. 5.1)Routine invest
18、igations:- Standard Steel Panels (EAO only)- Production Steel Panels (NAAO only)Additional for Initial approval only:- Precoated Steel Panels as used in the plant- Aluminum, if used in the plantAll substrates except aluminum shall be zinc phosphated andconform to the requirements of WSK-M3P1-C.ENGIN
19、EERING MATERIAL SPECIFICATIONWSK-M64J29-A1/A2/A3/C1/C2/C3 WP 3948-b Page 4 of 9 3.6.2 Electrocoat Primer(FLTM BI 120-01)Electrocoat bath temperature (if not otherwise specified bythe supplier): 30 +/- 3 CDry film thickness: 23 - 25 micrometreBaking conditions:EAO: 10 minutes at 175 C(Initial Approva
20、l only): 10 minutes at 190 CNAAO: 10 minutes at 180 C and10 minutes at 200 C3.6.3 Primer SurfacerApplication of current approved primer surfacer, filmthi ckness and baking as required in the relevant materialspecification.3.6.4 TopcoatApplication of current approved white enamel topcoat for alltests
21、, film thickness a nd baking as required in the relevantmaterial specification.3.6.5 AgeingAll Te st Panels prepared according to this specificationshall be age d for at least 72 h at 23 +/- 2 C or 16 h at45 +/- 1 C before testing for resistance properties.3.7 APPEARANCEColour, gloss and surface fin
22、ish shall match the Initial Sample.3.7.1 Colour (electrocoat primer only) See Initial Sample(FLTM BI 109-01)3.7.2 Gloss (electrocoat primer only) See Initial Sample(FLTM BI 110-01, 60 deg)3.7.3 LevelingThe surface of the electrocoat primer shall be s mooth withoutany structure and not more than a mi
23、nimum of ora nge peel whenapplied and baked as required in 3.6, coating class III.3.7.4 HoldoutNo evidence of dulling, no craters or pinholes and no changein i mage clarity when enamel colour coat is applied overunsanded electrocoat primer per coating class II.ENGINEERING MATERIAL SPECIFICATIONWSK-M
24、64J29-A1/A2/A3/C1/C2/C3 WP 3948-b Page 5 of 9 3.8 RESISTANCE PROPERTIES3.8.1 Adhesion, max Grade 1(FLTM BI 106-01, Method B, class I, II, III)No chipping or other ev idence of film separation between anycoating interface as applicable.3.8.2 Stone Chip Resistance, max Rating 2 - 3(FLTM BI 157-04, cla
25、ss III)3.8.3 Salt Spray Resistance, min 480 h(FLTM BI 103-01, class I and III,not for precoated steel)No blistering, no rusti ng or loss of adhesion more than 3 mmfrom the scribed line.3.8.4 Resistance to Scab Corrosion(FLTM BI 123-01, class III, 10 Cycles)Test Panels:a. Bimetallic split coach joint
26、 panels per 5.1. 5 (NAAO only)b. Steel panels per 3.6.1.Evaluation:a. No more than 10 mm rust, blister creepage, or loss ofadhesion at the joint of the bimetallic coach joint.b. No blistering, rusting or loss of adhesion m ore than 3 mmfrom the scribe line.3.8.5 Water Immersion Test 240 h(FLTM BI 10
27、4-01, class I, II, III)No loss of adhesion, no loss of gloss and no blisteringaccepted.3.8.6 Film YellowingPreparation of Test Panels:Coat a 100 mm X 300 mm steel panel with electroc oat, bake per3.6.2 and let cool to room temperature.Appl y and bake white enamel topcoat to the electrocoatedpanel as
28、 well as to another, non-electrocoated panel.Evaluation:Not more than a slight yellowing of the electrocoated versusthe n on-electrocoated panel is permitted. The primer undertest shall be equal or better than currently used material.ENGINEERING MATERIAL SPECIFICATIONWSK-M64J29-A1/A2/A3/C1/C2/C3 WP
29、3948-b Page 6 of 9 3.8.7 Fume Yellowing(FLTM BI 120-16)Only a slight yellowing is permitted. The primer under testshall be equal or better than currently used material.3.9 THROWING POWER(FLTM BI 120-02, exceptions noted below)3.9.1 Substrates- Non-phosphated Steel Panels per UMA 18006- Phosphated St
30、eel Panels per 3.6.1- Oiled SubstratesOiled Substrates shall be prepared per FLTM BZ 1 50-11, OilingGrade: Normal.3.9.2 Preparation of Throw Power Panels(FLTM BI 120-02, Method C)Note : Throw power panels shall be prepared with the samevoltage and temperature as used in para 3.6.2 to obtain therequi
31、red film thickness on phosphated panels.Bake the electrocoat pr imed panels 10 minutes at 175 C metaltemper ature. Prior to testing 3.9.3, panel edges and theuncoated end shall be sealed.3.9.3 Throw Power Requirements(FLTM BI 120-02, Method C)Req uirements and specified test periods for the defineds
32、ubstrat es in salt spray test FLTM BI 103-01 are indicatedbelow:Salt mm of protectionSpray before afterSubstrate/Surface Condition Hours salt spray test Standard Panel - Phosphated 240 200 180Production Panel - Phosphated 240 200 180Standard Panel - Clean 240 170 130Standard Panel - Oiled 120 170 60
33、There shall be no blistering, red rusting or corrosiongreate r than the minimum requirements, measured from theelectrocoated end of the electrocoated test panel.ENGINEERING MATERIAL SPECIFICATIONWSK-M64J29-A1/A2/A3/C1/C2/C3 WP 3948-b Page 7 of 9 3.10 FLORIDA-WEATHERING 12 months(FLTM BI 160-01, clas
34、s III, solid colour white).Test panels, scribed with an “X“ shall be exposed in the area ofMiami, Florida, 5 deg facing south for one year exposure time.After the exposure the surface shall show neither blistering norpeeling nor any other defect caused by the electrocoat primer.No rusting or loss of
35、 adhesion more than 3 mm from the scribe line.3.10.1 Water Immersion Test, 24 h No blistering(FLTM BI 104-01)The Florida panels shall be tested after evaluation 3.10.3.11 QUALITYThe primer must be adaptable for application in accordance withappropriate Ford Motor Company Process Specification U-C800
36、.The EC- primer must be compatible with all related materials e.g.:sealers, adhesives and paint materials.3.12 SUPPLIERS RESPONSIBILITYAll materials supplied to this specification must be equivalent inal l characteristics to the material upon which approval wasoriginally granted.Pri or to making any
37、 change in the properties, composition,const ruction, colour, processing or labelling of the materialorig inally approved under this specification, whether or not suchchange s affect the materials ability to meet the specificationrequir ements, the Supplier shall notify Purchasing, Toxicology andthe
38、 affected Materials Engineering activity of the proposed changesand obtain the written approval of the Materials Engineeringactivity. Test data, test samples and a new code identification areto be submitted with the request.Substance restrictions imposed by law, regulations or Ford, apply tothe mat
39、erials addressed by this document. The restrictions arede fined in Engineering Materials Specification WSS-M99P9999-A1,unless a different suffix (e.g., A2 or A3) is specified on theengineering document for the application.ENGINEERING MATERIAL SPECIFICATIONWSK-M64J29-A1/A2/A3/C1/C2/C3 WP 3948-b Page
40、8 of 9 4. APPROVAL OF MATERIALSMat erials defined by this specification must have prior approval by theresponsible Materials Engineeri ng activity. Suppliers desiring approval ofthe ir materials shall first obtain an expression of interest from theaffec ted Purchasing, Design and Materials Engineeri
41、ng activity. Uponrequest, the Supplier shall submit to the affected Materials Engineeringactivity a completed copy of their laboratory test reports, signed by aqualified and authorized representative of the test faci lity, demonstratingful l compliance with all the requirements of this specification
42、 (testresults, not nominal values), the material designation a nd code number, andtes t specimens for Ford evaluation. Fords engineering approval of amateri al will be based on its performance to this specification and on anassessment of suitability for i ntended processes and/or applications. Upona
43、pprov al, the material will be added to the Engineering Material ApprovedSource List.5. GENERAL INFORMATION The information below is provided for clarification and assistance inmeeting the requirements of the specification.5.1 PANEL INFORMATIONNAAO: Test Panels are available from Advanced Coating Te
44、chnologies,Inc., P.O. Box 735, 273 Industrial Dr., Hillsdale, Michigan 49242 orthe Parker Co., 322 Main Street, Morenci, Michigan 49256.5.1.1 Standard Steel PanelsNAAO: Standard steel panels are laboratory qual ity mild coldrolled steel available clean or zinc phosphated. EAO: Zinc phosphated Test p
45、anels prepared in ac cordance withFord Manufacturing Standard U-MA18004/U-MA18005.Non-phosphated Test panels prepared in accordance with FordManufacturing Standard U-MA18006.5.1.2 Production Steel PanelsPr oduction steel panels from selected coils of automotivequality steel, oiled or zinc phosphated
46、.5.1.3 Precoated Steel PanelsNAAO: Two side electrogalvanized Steel 50-80 g/m2 panels.EA O: Test panels complying with the relevant grades ofWSB-M1A250-C3 or ESD-M1A311-A.5.1.4 Aluminum PanelsSAE 2036 Aluminum.ENGINEERING MATERIAL SPECIFICATIONWSK-M64J29-A1/A2/A3/C1/C2/C3 WP 3948-b Page 9 of 9 5.1.5
47、 Split Coach Joint Bimetallic PanelsSpl it coach joint bimetallic panels are manufactured bywelding production steel panels to electrogalvanized panelsand th en cutting the panel into two sections prior to zincphos phating. This allows the candidate material and thecontrol material to be evaluated o
48、ver identical substrate.5.2 PANEL PREPARATION (NAAO only)Test panels can be prepared and tested at:ACT Testing Laboratories, Inc.P.O. Box 735, 273 Industrial Dr.Hillsdale, Mi. 49242(517) 439-14855.3 CORRECTIVE ADDITIVESCorrective additives are only used as recommended by the Supplier.The resultant b
49、ath material shall meet the requirements of thisspecification.5.3.1 Control Additive, Butyl Glycol WSK-M14J240-A5.3.2 Control Additive, Ethyl Glycol WSK-M14J241-A5.3.3 Control Additive, Binder Solution W SK-M99J361-A1/-A25.3.4 Control Additive, pH - Value WSK-M97B50-ANAAO only:5.3.5 Control Additive, flow M97B10-A5.4 MATERIAL REFERENCEAll related materials used for approval of electrocoat primeraccording to this specification, e.g. substrate material, primersurfacer, paint materials as well as corrective additives shall benoted in the Initial Sample Report o
