1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 03 2012 05 21 N Status No usage or replacement N. Benipal, NA 2010 04 15 Revised Revised 3.8.2.2 A. Wedepohl, NA 1990 01 31 Released NB00E10080067000 PAK, MP Controlled document at www.MATS Copyright 2012, Ford Global Technologies, Inc. P
2、age 1 of 10 PRIMER, WATERBORNE CATIONIC ELECTROCOAT, WSB-M64J28-A1 20 MICROMETRE FILM BUILD, INITIAL FILL, BLACK, 180 C BAKING TEMPERATURE MAKEUP FEED, WATERBORNE CATIONIC ELECTROCOAT WSB-M64J28-A2 20 MICROMETRE FILM BUILD, RESIN MAKEUP FEED, WATERBORNE CATIONIC ELECTROCOAT WSB-M64J28-A3 PIGMENT, BL
3、ACK FLOW CONTROL ADDITIVE WSB-M64J28-A4 PRIMER, WATERBORNE CATIONIC ELECTROCOAT, WSB-M64J28-C1 20 MICROMETRE FILM BUILD, INITIAL FILL, GRAY, 180 C BAKING TEMPERATURE MAKEUP FEED, WATERBORNE CATIONIC ELECTROCOAT WSB-M64J28-C2 20 MICROMETRE FILM BUILD, RESIN MAKEUP FEED, WATERBORNE CATIONIC ELECTROCOA
4、T WSB-M64J28-C3 PIGMENT, GRAY FLOW CONTROL ADDITIVE WSB-M64J28-C4 NOT TO BE USED FOR NEW DESIGN 1. SCOPE The materials defined by these specifications are nominal 20 micrometre film build, black or gray waterborne electrocoat body primers and associated make-up feed components applied by the cathodi
5、c deposition process. 2. APPLICATION These specifications were released originally for a paint system which, when properly electrodeposited on vehicle bodies, sheet metal components or small parts, will provide good corrosion resistance, adhesion and enamel appearance properties. WSB-M64J28-A1, C1:
6、This primer is applied directly over zinc phosphate coated cold rolled steel, electrodeposited zinc or zinc/zinc alloy coated steel and any other type of steel classified as precoated, as well as to aluminum substrates. Typical applications are as follows: ENGINEERING MATERIAL SPECIFICATION WSB-M64J
7、28-A1/A2/A3/A4/C1/C2/C3/C4 Copyright 2012, Ford Global Technologies, Inc. Page 2 of 10 . Visible Exterior Surfaces: The electrocoated primer film may be followed by an approved primer-surfacer and exterior enamel color coat. The electrocoat primer, primer-surfacer, and enamel are all baked separatel
8、y. . Visible Interior Surface: The baked electrocoated primer film is followed by an enamel color coat. . Non-visible Interior or Underbody Surfaces: The baked electrocoated primer film is not usually followed by an additional primer or enamel color coat. WSB-M64J28-A2, C2: This material is make-up
9、feed material used to replenish the resins of the initial fill electrocoat bath. WSB-M64J28-A3, C3: This material is make-up feed material used to replenish the pigments of the initial fill electrocoat bath. WSB-M64J28-A4, C4 are make-up feed materials that correct poor flow characteristics of the p
10、rimer which may develop when the bath ages. This additive is used only as recommended by the supplier following ultrafiltrate purge or when discontinuous operation of an electrocoat tank results in evaporation of bath volatiles. 3. REQUIREMENTS WSB-M64J28-A1, C1 cationic electrocoat primer shall mee
11、t all detailed requirements of this specification. The make-up feed material shall meet the requirements of para 3.5 and 3.6. When the feed material is used in production, the resultant primer film shall conform to the requirements detailed in para 3.7 through 3.11. These requirements apply to both
12、laboratory prepared and assembly plant electrocoat tank materials. 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 MATERIAL COMPATIBILITY The supplier of this ma
13、terial shall keep abreast of changes in technology of related materials e.g., sealers and adhesives, which may affect the compatibility and performance of this product. The supplier shall notify the appropriate Ford Product Materials Engineering Office in writing when incompatibility is anticipated.
14、 ENGINEERING MATERIAL SPECIFICATION WSB-M64J28-A1/A2/A3/A4/C1/C2/C3/C4 Copyright 2012, Ford Global Technologies, Inc. Page 3 of 10 3.5 COMPOSITION 3.5.1 Density, kg/L at 25 C (ASTM D 1475) The density of the materials defined by these specifications shall be within +/- .05 % of that shown on the Ini
15、tial Sample Report. 3.5.2 Non-volatile, wt % (FLTM BI 102-01) The non-volatile content of the material types specified by these specifications shall match the values shown on the initial sample report within +/- 1 %. 3.5.3 Weight Loss, max (FLTM BI 120-15, after 10 minutes at 182 +/- 2 C metal tempe
16、rature bake cycle) Initial Fill and Assembly Plant Electrocoat Tank Material 12.0 % 3.5.4 Solvent Emissions, max 0.096 kg/L of wet paint (ASTM D 3960) This requirement is as determined by the United States Environmental Protection Agency Reference Method #24 but is only applicable to materials used
17、in the USA. 3.6 STABILITY 3.6.1 Pumping Stability (FLTM BI 120-04) After 21 days minimum agitation, the bath prepared from the initial fill or feed materials shall meet all requirements of the specification. 3.6.2 Storage Stability 2 months During a storage of 2 months between 5 and 32 C temperature
18、 the material as supplied shall not settle or cake. 3.7 PREPARATION of TEST PANELS Prepare panels per FLTM BI 120-01 with the exceptions noted below: The substrates used shall be as follows, (ref. para. 5.1): ENGINEERING MATERIAL SPECIFICATION WSB-M64J28-A1/A2/A3/A4/C1/C2/C3/C4 Copyright 2012, Ford
19、Global Technologies, Inc. Page 4 of 10 Standard Steel Panels Production Steel Panels Electrodeposited Zinc or Zinc/Nickel Alloy Coated Panels Aluminum or as designated by the responsible Product Materials Engineering Laboratory. The electrocoat bath temperature should be maintained at 27 +/- 2 C or
20、as recommended by the supplier during the coating process. All substrates except aluminum shall be zinc phosphated and conform to the requirements of WSK-M3P1-C using the most widely adopted assembly plant processes. Use current approved primer surfacer for all tests. Use current approved black enam
21、el topcoat for the holdout evaluation (para 3.8.5). Use current approved white enamel topcoat for all other tests requiring an enamel topcoat. 3.7.1 Paint Systems for Testing The following four different coating conditions will be utilized to test the cationic electrocoat primer. EAO only to test co
22、nditions II - IV. The following chart specifies the coating conditions and the film thickness requirements: CONDITION I II III IV Dry Film Thickness Requirements in micrometres E-Coat Primer E-Coat Primer E-Coat Primer with Topcoat E-Coat Primer with Primer Surfacer with Topcoat E-Coat Primer 13 15
23、20 23 20 23 23 23 Primer Surfacer - - - 20 min* Enamel Topcoat - - 40 -50 40 - 50 *Unless otherwise specified in the applicable Primer Surfacer Engineering Material Specification ENGINEERING MATERIAL SPECIFICATION WSB-M64J28-A1/A2/A3/A4/C1/C2/C3/C4 Copyright 2012, Ford Global Technologies, Inc. Page
24、 5 of 10 3.7.2 Bake Requirements E-coat Primer - EAO 175 C & 190 C. - NAAO 10 min at 165, 180 & 200 C Mt. Temp. Primer Surfacer - As per current Production Material Spec. Enamel Topcoat - As per current Production Material Spec. Note: Sanding is not permitted. 3.7.3 Ageing All panels shall be aged 7
25、2 h at 23 +/- 2 C or 16 h at 43 +/- 1 C prior to testing. 3.8 APPEARANCE 3.8.1 Color (FLTM BI 109-01) A1, A3 Black C1, C3 Gray The color shall match the originally approved master appearance sample. For assembly line operations, master panels approved by Product Materials Engineering may be used. 3.
26、8.2 Leveling 3.8.2.1 Smoothness The surface of the electrocoat primer shall be smooth without any structure and not more than a minimum of orange peel when applied and baked as required in 3.7. 3.8.2.2 Gloss (FLTM BI 110-01, 60) Report Value 3.8.3 Film Yellowing No more than slight (TBD) yellowing p
27、ermitted Coat 1/2 of a 100 mm x 300 mm panel with electrocoat to a film thickness of 20 micrometres and bake 10 minutes at 180 +/-2 C metal temperature. Cool to room temperature. Apply 40 micrometres of current approved production quality white enamel to the entire panel and bake 10 min at 130 +/-2
28、C metal temperature. Measure the change in Y value using a colorimeter between the electrocoated versus non-electro-coated areas. ENGINEERING MATERIAL SPECIFICATION WSB-M64J28-A1/A2/A3/A4/C1/C2/C3/C4 Copyright 2012, Ford Global Technologies, Inc. Page 6 of 10 3.8.4 Fume Yellowing No more than slight
29、 (FLTM BI 120-16) yellowing permitted This test shall be performed with a white enamel system and a white colored primer system. 3.8.5 Holdout No evidence of dulling or change in image clarity when enamel color coat is applied over unsanded electrocoat primer as compared to current approved producti
30、on electrocoat enamel (Condition III panels as per 3.7.1). 3.9 RESISTANCE PROPERTIES Note: All resistance tests shall be carried out in comparison with current approved production electrocoat primer and shall demonstrate equal or better performance. 3.9.1 Adhesion, max Grade 0 (FLTM BI 106-01, Metho
31、d B) Prepare panels per para 3.7. There shall be no chipping or other evidence of film separation between any coating interface as applicable. 3.9.2 Stone Chip Resistance, max Rating 1 (FLTM BI 157-04, or equiv.) Prepare panels according to para 3.7 using current quality white top coat enamel. Chipp
32、ing between any coating interface shall not exceed above limit. 3.9.3 Salt Spray, min 500 h (FLTM BI 103-01, cold rolled steel panels per 5.1.1) Panels prepared according to para 3.7 shall exhibit no blistering, rusting or loss of adhesion more than 3 mm from a line scribed to bare metal. 3.9.4 Resi
33、stance to Scab Corrosion (FLTM BI 123-01, 50 test cycles) Bimetallic split coach joint panels (ref. to para. 5.1.5) prepared according to para. 3.7, shall be scribed to base metal across the two substrates. After exposure, there shall be no more than 10 mm rust, blister creepage, or loss of adhesion
34、 at the joint of the bimetallic coach joint. Standard steel panels (ref. to para. 5.1.1) prepared according to para. 3.7, shall be scribed to the base metal. After exposure there shall be no blistering, rusting or loss of adhesion more than 3 mm from the scribe line. ENGINEERING MATERIAL SPECIFICATI
35、ON WSB-M64J28-A1/A2/A3/A4/C1/C2/C3/C4 Copyright 2012, Ford Global Technologies, Inc. Page 7 of 10 3.9.5 Adhesion/Water Immersion Test, max 0 mm (FLTM BI 104-04) Prepared production steel and electroplated zinc or zinc alloy coated steel panels only, according to para 3.7 (omit primer only systems).
36、Test for the loss of adhesion after the panels have been immersed in a deionized water bath maintained at 49 +/- 2 C for 120 h. Blistering of the paint film is not permitted. 3.9.6 Florida Weathering 12 months (FLTM BI 160-01) Panels shall be prepared according to para. 3.7 Condition IV only Test pa
37、nels, scribed with an “X“ shall be exposed in the area of Miami, Florida, 5 facing south for one year exposure time. After the exposure the surface shall show neither blistering nor peeling nor any other defect caused by the electrocoat primer. 3.9.6.1 Condensing humidity test, 24 h No blistering (A
38、STM D 2247) The Florida panels shall be tested after evaluation 3.9.6. 3.9.6.2 Adhesion No chipping (FLTM BI 106-01, Method B) Adhesion shall be performed 24 h after test 3.9.6.1 3.10 THROWING POWER 3.10.1 Preparation of Throw Power Panels (FLTM BI 120-02, Method C) Throw power panels shall be prepa
39、red as per above test method with the following exceptions: The substrates used shall be standard steel and production steel panels but unscribed (see para 5.1). The surface condition of the substrates are designated in para 3.10.2. All substrates which are required to be phosphated, shall be zinc p
40、hosphated per WSK-M3P1-C prior to painting. The oiled substrates shall be prepared as follows: The oil solution shall be a mixture of 5% by volume of ASTM Oil #1 (see ASTM D 471) in toluene. Pour the oil mixture on the test panels and hang in a vertical position to dry for 24 h before applying the e
41、lectrocoat. ENGINEERING MATERIAL SPECIFICATION WSB-M64J28-A1/A2/A3/A4/C1/C2/C3/C4 Copyright 2012, Ford Global Technologies, Inc. Page 8 of 10 The voltage used to prepare throw power panels shall be the same voltage required to obtain a 20 micrometre electrocoat paint film thickness on a standard pho
42、sphated test panel prepared per FLTM BI 120-01. Bake the electrocoat primed panels 10 minutes at 175 C (EAO) or 180 (NAAO) metal temperature. Electrocoat painted test panels shall be exposed to salt spray per FLTM BI 103-01 for the test periods designated in para 3.10.2. Panel edges shall be sealed
43、and the uncoated end placed downwards in the salt spray cabinet. 3.10.2 Throw Power Requirements The minimum requirements and specified test periods for the defined substrates, are indicated below: Salt Spray mm of protection before Substrate/Surface Condition Hours and after salt spray Before After
44、 Standard Panel - Phosphated 240 275 170 Production Panel - Phosphated 240 275 170 Standard Panel - Clean 240 275 120 Production Panel - Oiled 120 275 50 There shall be no blistering, red rusting or corrosion greater than the minimum requirements, measured from the electrocoated end of the electroco
45、ated test panel when salt spray tested per FLTM BI 103-01. 3.11 QUALITY Must be adaptable for application in accordance with appropriate Ford Motor Company Process Specifications. When applied in this manner, it shall bake out to a presentable, serviceable film showing no craters or pinholes. 5. GEN
46、ERAL INFORMATION The information below is provided for clarification and assistance in meeting the requirements of the specification. ENGINEERING MATERIAL SPECIFICATION WSB-M64J28-A1/A2/A3/A4/C1/C2/C3/C4 Copyright 2012, Ford Global Technologies, Inc. Page 9 of 10 5.1 PANEL INFORMATION 5.1.1 Standard
47、 Steel Panels Standard steel panels are laboratory quality mild cold rolled steel available clean or zinc phosphated. They are available from the Advanced Coating Technologies, Inc., P.O. Box 735, 273 Industrial Dr., Hillsdale, Michigan 49242 or the Parker Co., 322 Main Street, Morenci, Michigan 492
48、56 For EAO only, use panels prepared in accordance with Ford Manufacturing Standard U-MA001-8001 5.1.2 Production Steel Panels Production steel panels are produced from selected coils of automotive quality steel and are available oiled or zinc phosphated. They are available from the Advanced Coating
49、 Technologies, Inc., P.O. 735, 273 Industrial Dr., Hillsdale, Michigan 49242 5.1.3 Electrogalvanized Steel 50 - 80 g/m2 Two side electrogalvanized panels may be obtained from Advanced Coating Technologies, Inc., P.O. Box 735, 273 Industrial Dr., Hillsdale, Michigan 49242. For EAO only, use panels complying with the relevant grades of WSK-M1A250-C3 and ESD-M1A311-A. 5.1.4 Aluminum Panels SAE 2036 Aluminum panels can be obtained from Advanced Coating Technologies, Inc., P.O. Box 735, 273 Industrial Dr., Hil
