1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 03 2011 12 07 N Status No replacement named N. Benipal, NA 2005 07 29 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.11 and 4 1995 09 29 Activated C10460398 D. G. Green Controlled document at www.MATS Copyright 2011, Ford Global Technolog
2、ies, LLC Page 1 of 3 PAINT, POWDER COAT, THERMOSETTING, WSS-M70J11-A EPOXY MODIFIED POLYESTER NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is an Epoxy modified Polyester powder coat suitable for application over automotive radiators, radiator cores, condensers an
3、d associated parts. 2. APPLICATION This specification was released originally for material to be applied over mild steel, brass, terne plate, soldered, and aluminum substrates. The material shall be suitable for electrostatic spray or fluidized bed application. 3. REQUIREMENTS 3.0 STANDARD REQUIREME
4、NTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 COMPOSITION 3.4.1 Binder The binder shall be thermosetting resin. It shall have sufficient thermal stability for processing. There shou
5、ld be essentially no volatility of the resin or its modifiers during curing. 3.4.2 Pigment Inert pigments and additives to obtain the desired color and gloss. 3.4.3 Specification Composition When it is necessary to obtain specific data regarding material formulation, it is understood that the suppli
6、er will furnish such data on request. 3.5 PHYSICAL PROPERTIES 3.5.1 Storage Stability Fill 2 liters of the powder under test into two cylindrical boxes of 150 +/- 10 mm diameter. Close one of the boxes airtight with a suitable lid and store two boxes for 8 weeks at 30 +/- 2 C in a laboratory oven us
7、ing recirculating air. The material shall not cake or change its application or any other properties. ENGINEERING MATERIAL SPECIFICATION WSS-M70J11-A Copyright 2011, Ford Global Technologies, LLC Page 2 of 3 3.6 PREPARATION OF TEST PANELS (FLTM BI 103-02) 3.6.1 Substrate Powder should be evaluated w
8、hen applied over the substrate intended for component manufacture. The following references are intended as a guide to the necessary pretreatment required for typical substrates used in the manufacture of the specified components. 3.6.1.1 Ford Engineering Approved Standard Test Panels, eg. UMA 18001
9、 or UMA 18006. Panels should be degreased in accordance with FLTM BI 103-02. 3.6.1.2 Ford Engineering Approved Standard Steel Test Panels zinc phosphated with approved phosphate to WSK-M3P1-C requirements, eg. UMA 18004 or UMA 18005. Panels must be heated for 10 minutes at 140 C metal temperature an
10、d cooled down to room temperature in a desiccator prior to powder application. 3.6.1.3 Brass sheet of same quality and surface texture as that used in production. Surface preparation or degreasing should be carried out in accordance with FLTM BI 103-02 or as recommended by Powder Coat supplier. 3.6.
11、1.4 Terne Plate of same quality and surface texture as that used in production. Substrate surface preparation should be carried out as per Brass. 3.6.1.5 Aluminum of the same quality and surface texture as that used in production. Substrate surface preparation should be carried out as per Brass, and
12、 Terne Plate. It may be necessary to Chromate the surface prior to Powder Coat application, reference WSK-M6P2-B, in order to achieve required resistance properties. 3.6.2 Application Apply powder under test by electrostatic spray gun to a baked film thickness as recommended by the vendor. Film Thic
13、kness, min 30 micrometers (FLTM BI 117-01) 3.7 APPEARANCE The material shall have satisfactory appearance and hardness when applied. The surface shall be smooth with absence of dirt, pits and scratches. 3.7.1 Color Black, unless otherwise stated (FLTM BI 109-01) on the Engineering Drawing 3.7.2 Glos
14、s Initial sample (FLTM BI 111-01 +/- 3 units 60 glossmeter) ENGINEERING MATERIAL SPECIFICATION WSS-M70J11-A Copyright 2011, Ford Global Technologies, LLC Page 3 of 3 3.8 FILM PROPERTIES 3.8.1 Film Thickness 30 micrometers (FLTM BI 117-01) Coating must be applied with sufficient film thickness to mee
15、t all of the performance requirements of this specification. 3.8.2 Initial Hardness - Capable of withstanding normal handling. 3.9 RESISTANCE PROPERTIES Resistance tests should be carried out where possible on the Powder Coat when applied over production substrate materials. Reference clause 3.6, th
16、e preparation of Test Panels. 3.9.1 Paint Adhesion Grade 0 (FLTM BI 106-01, Method B) 3.9.1.1 Adhesion after Ageing Grade 0 3.9.1.2 Adhesion after Ageing and Grade 0 heating for 2 h at 121 C 3.9.1.3 Adhesion after Ageing and Grade 0 heating for 1 h at 204 C 3.9.2 Coolant Resistance (Immersion 1 h at
17、 70 +/- 2 C. 50% current initial fill coolant, 50% water) Shall not blister. Color change to Grey Scale AATCC Rating 3 - 0 is permitted. Gloss loss can be accepted. 3.10 EXPLOSION HAZARD These materials should be used in a closed system specifically designed for their use because of the possibility of dust explosion present in powdered materials.
