FORD-WSS-M2P181-A-2008.pdf
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1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2008 11 25 N-STATUS Replaced by WSS-M2P181-C J. Crist, FNA 2003 08 19 Revised Para 3.0 inserted; Para 3.1, 3.2, 3.9, 4 deleted 1999 05 17 Activated T. Honey, J. Parker, G. Molnar, A. Weakley Printed copies are uncontrolled Copyright 2008, For
2、d Global Technologies, Inc. Page 1 of 7 PAINT PERFORMANCE, FLEXIBLE SUBSTRATES, EXTERIOR WSS-M2P181-A NOT TO BE USED FOR NEW DESIGN 1. SCOPE This specification defines the performance of a multi-layered paint or dry paint film system required for all exterior body parts where best appearance, high f
3、lexibility, high durability, and impact resistance are required. This system is specified for assembly plants and component suppliers, covering all processes including in-department and pre-delivery repairs. 2. APPLICATION This specification was released originally to define paint performance of ext
4、erior surfaces. It is specified for vehicle bumpers, claddings, bodyside moldings, and other parts visible after assembly. 3. REQUIREMENTS Terminating exterior edges visible after assembly shall conform to the full requirements of this specification. In-department and pre-delivery paint repairs shal
5、l meet the requirements of this specification. Parts must conform to the color requirements defined by the Ford Color Harmony Team. Note: For in process color check the preferred method is SAE J1545, three angle CMC. Material specification requirements are to be used for initial qualification of mat
6、erials. 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). 3.3 SYSTEM COMPONENTS 3.3.1 Substrates Flexible polymers and flexible polymer blends, PU, PC, TEO etc. with a
7、 flex modulus typically of less than 1250 MPa. 3.3.2 Substrate Condition The surface to be coated must be cleaned by an automated process to ensure the absence of oil or alkaline residues, fingerprints, corrosion, mold release agents, dirt, moisture, and other foreign materials. When necessary, in o
8、rder to meet the requirements of this specification, surface enhancements, such as flaming or plasma treatment, that modify surface tension, surface resistivity or chemical reaction(s) that change the surface chemistry are required, they shall be specified on Engineering Documents. -,-,- ENGINEERING
9、 MATERIAL SPECIFICATION WSS-M2P181-A Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, Inc. Page 2 of 7 3.3.3 Coating Material 3.3.3.1 Primer and Color Coat When necessary in order to meet the requirements of this specification, an adhesion promoter and/or primer surfacer mus
10、t be used as specified on Engineering Documents. 3.3.3.2 In-Department and Predelivery Repairs Repaired areas must meet the requirements of this specification. All repair materials and processes used should be approved by the affected Product Materials Activity. Maximum film thickness and/or number
11、of repairs for repaired parts will be specified in the mutually agreed control plan and conform to para 3.4.4. All repairs must be in a complimentary color to the original finish by agreement with the receiving company. 3.3.4 Finished Parts Testing must be conducted on actual production parts contai
12、ning a minimum of 25% regrind. Where part dimensions limit equipment access and testing, representative panels (minimum 25% regrind) run through the production processes may be substituted for production parts. These panels shall be processed together with parts and shall be representative of the pa
13、rts with respect to substrate, primer thickness, sanding, enamel thickness, and processing. Panels with the appropriate regrind content can be laboratory prepared (simulating production conditions) and used for long term weathering exposure, such as Florida and Arizona submissions. 3.4 FILM PROPERTI
14、ES 3.4.1 Appearance (FLTM BI 109-01 & ASTM D 523) As released by Corporate Design: (Use as a guide) A: 20 Glossmeter, min 90 B: 60 Glossmeter 76 +/- 4 C: 60 Glossmeter 70 +/- 4 D: 60 Glossmeter 62 +/- 3 E: 60 Glossmeter 50 +/- 3 F: 60 Glossmeter 35 +/- 3 G: 60 Glossmeter 20 +/- 3 H: 60 Glossmeter 10
15、 +/- 3 J: 60 Glossmeter 5 +/- 1 K: 60 Glossmeter 3 +/- 1 L: 60 Glossmeter 1.5 + 0.5/- 1 Color, gloss and surface finish shall match the Master Appearance Sample or the initial sample as approved by Design Center. See para 5.3 table for gloss correction for index of refraction. 3.4.2 Hardness Shall b
16、e sufficiently cured after baking to withstand normal handling and shipping without damage. ENGINEERING MATERIAL SPECIFICATION WSS-M2P181-A Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, Inc. Page 3 of 7 3.4.3 Film Thickness (ASTM B 487) Coating thickness must be sufficien
17、t to meet all requirements of this material specification. Refer to applicable materials specifications and/or process standards for film thickness values. 3.4.4 Film Thickness, max (ASTM B 487) The finished unit, part, or test specimen shall not exceed 230 micrometers total film thickness. There sh
18、all be no more than 2 in-department repairs. 3.4.5 Paint Adhesion (FLTM BI 106-01, Method D, knife blade) Less than 5% paint removal of any paint layer with no complete diamonds removed. Lightly sand paint film surface until dull, before checking adhesion. 3.5 RESISTANCE PROPERTIES 3.5.1 Water Resis
19、tance 240 h (FLTM BI 104-01) No blistering, dulling, softening, loss of adhesion and/or any other film failure. Adhesion shall be tested according to para 3.4.5 within 20 minutes after removal from water. 3.5.2 Hydrolysis Resistance 28 days (FLTM BI 106-03) Use 5 samples for each color tested. Test
20、sample for adhesion at 14 day intervals per para 3.4.5. If an adhesion failure is detected, recheck sample in a different area to verify. 3.5.3 Fluid Spotting Resistance None (FLTM BI 113-01) Test Fluids: (Current production factory fill materials, Motorcraft products or equivalent) Liquid Soap Wind
21、shield Solution Neat and at a 30% concentration in deionized water. Coolant Solution Neat and at a 30% concentration in deionized water. Motor Oil Bug & Tar Remover No color change in excess of Gray Scale rating 4 - 5 (AATCC Evaluation Procedure 1/ISO 105-A02), dulling, surface distortion or permane
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