1、This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2014 by Navistar, Inc. June 2014 Page 1 of 8 NAVISTAR, INC. Material, Parts, and Process Specifications (
2、MPAPS) NUMBER: MPAPS G-9005 Former Designation: TMS-9005 TITLE: Prepaint Treatment, Plastic Parts CURRENT REV No.: 1406 DATE: JUNE 2014 WRITTEN/EDITED BY: Materials Engineering APPROVED BY: Materials Engineering SUPERSEDES: TMS-9005 - August 2013 PRINTED COPIES OF THIS DOCUMENT MUST BE VERIFIED FOR
3、CURRENT REVISION This specification may involve hazardous materials, equipment, and procedures. This specification does not purport to address all of the safety issues associated with its use. The user is responsible to consult appropriate safety and health practices and to determine the applicabili
4、ty of regulatory limits prior to use. Change Notice: Changed to new MPAPS format; editorial changes. 1.0 APPLICATION This specification covers the prepaint treatment required for open or closed mold fiberglass reinforced thermosetting plastic parts, or thermoplastic parts that are injection molded o
5、r thermoformed, which are to be subsequently finish painted in NAVISTAR facilities. Typical parts are hood and fender assemblies, headlight panels, radiator grilles, window panel inserts, engine covers, and similar exterior and interior applications. 2.0 SCOPE This specification covers surface appea
6、rance and dry film property requirements of the primer, inspection, KCC, quality control and source approval, repair of primed surfaces, and handling required for prime painted FRP or thermoplastic parts prior to shipment to the using NAVISTAR plant. Parts receiving heat cured topcoats and parts tha
7、t specify air dry topcoat finish are covered by this specification. 2.1 Restricted Chemical Substances Effective January 1, 2007, all product supplied to the requirements of this specification must comply with the requirements of the MPAPS B-50 specification. 3.0 REFERENCE DOCUMENTS Unless otherwise
8、 specified, the latest issue of all referenced standards shall apply. The following specifications, standards, and regulations are referenced herein. Quality System Standard ISO 9001 or TS-16949 NAVISTAR CEMS GT-5A,5B, 5C NAVISTAR Manufacturing Std. MS-D-13 NAVISTAR CEMS GT-6B NAVISTAR Engineering D
9、esign Std A-16 NAVISTAR CEMS GT-7E CFR Title 29, Part 1910 NAVISTAR CEMS GT-14A NAVISTAR MPAPS B-50 NAVISTAR CEMS GT-18 NAVISTAR CEMS G-5, Part V NAVISTAR CEMS GT-28 NAVISTAR CEMS GT-4D ASTM D 4138 NAVISTAR MPAPS G-9012 SAE J400 NUMBER: MPAPS G-9005 TITLE: Prepaint Treatment, Plastic Parts REVISION:
10、 1406 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2014 by Navistar, Inc. June 2014 Page 2 of 8 4.0 GENERAL REQUIREMENTS This specification is not int
11、ended to limit or to specify the exact process and materials to be used in providing plastic parts ready for topcoating in NAVISTAR painting operations. The control of the primer quality and its application shall be the responsibility of the part supplier. All primed parts supplied shall be compatib
12、le with the finish painting operations employed by the using NAVISTAR plant. 4.1 Material/Process Approvals The primers used by the supplier must be approved by NAVISTAR Materials Engineering to meet the dry film requirements of Grade -52 and/or Grade -52HS as per CEMS G-5, Part V, prior to their fi
13、rst use in production. In addition, parts primed with the materials and application processes/methods to be used by the supplier shall be approved by Materials Engineering and, after approval, no deviation in materials and/or manufacturing processes shall be permitted without written approval by Mat
14、erials Engineering. 4.1.1 A typical preparation and priming procedure is shown in the General Information Section. This procedure has provided acceptable parts when used with good substrate and the proper materials. 4.2 In-Mold-Coating Priming of FRP parts which use in-mold-coating (IMC) as a sealer
15、 to seal the part requires special treatment. In cases where coverage of the part with IMC is essentially complete, if needed, the use of spot primer will be satisfactory. In cases where coverage of the part with IMC is less than complete, the use of a 1.0-2.0 mil dry film primer-sealer (with oven b
16、ake after application of the primer-sealer) will be required to seal the substrate. If the incompletely covered area is less than 2 inches in diameter, no priming may be necessary if the area does not show through the topcoat and does not promote surface defects (e.g., pitting and porosity). Spot pr
17、iming (and rebake) of these areas is acceptable if there is no show-through of primer boundaries after topcoat . If show-through occurs, the entire part must be primed and oven baked prior to topcoating. 4.3 Surface Quality It is recognized that certain defects, such as substrate porosity, may not b
18、e detectable in a primed part until after topcoating. Isolated instances of porosity, as defined in Table 1, shall not be considered cause for rejection. Chronic cases of porosity requiring significant rework shall be cause for rejection and the responsibility of the vendor to correct. The supplier
19、has the responsibility to provide quality primed parts which will not cause delayed defects after finishing in the using plant. Parts supplied shall be free of dirt, oils, molding flash, sharp edges or other potential contaminants that could cause in-plant rework and negatively impact overall qualit
20、y. This will require close cooperation with the paint facility at the using plant and with Materials Engineering. 4.4 Appearance Requirements Specific appearance requirements are given in Table 1. Appearance requirements are specified for the following zones or locations on the vehicle: NUMBER: MPAP
21、S G-9005 TITLE: Prepaint Treatment, Plastic Parts REVISION: 1406 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2014 by Navistar, Inc. June 2014 Page 3
22、of 8 ZONE DESCRIPTION I Primary, exterior, glamour surfaces, such as: hood and fender exteriors, including visible edges; grilles, cab fronts, sides, doors, corners, and lower aerodynamic fairings. II Secondary, exterior, glamour surfaces, such as: cab tops, cab backs (between corner radii) and uppe
23、r aerodynamic fairings. Also, primary, interior, low gloss painted surfaces, such as: engine covers and instrument panels. III Recessed exterior or interior surfaces, such as: door openings, door ends, and painted grab handles. IV Hidden areas, such as those covered in assembly and backsides, if pri
24、med. 4.4.1 Inspection Conditions Parts shall be inspected for appearance requirements at a distance of 2 feet under a light intensity of 100 foot-candles minimum at the part surface. Samples illustrating acceptable appearance and unacceptable appearance defects shall be prepared and displayed in the
25、 inspection area. 4.5 Primer-Dry Film Requirements Dry film property requirements for the primer are given in Table 2. These requirements apply to each individual coating of the primer where multi-coat primers are used with baking and/or drying between coats. For spot primes, dry film thickness may
26、be less, but no less than 0.5 mils and as close to 1.0 mils as the process will allow. 4.6 Bake Temperatures (For Primers Requiring Oven Bake) Primers shall be oven-cured within the minimum and maximum schedules for time and temperature prescribed by the primer supplier. However, the substrate tempe
27、rature shall reach a minimum of 200 F in at least one oven. 4.7 Test Procedures Unless otherwise specified, tests shall be run in accordance with the following test procedures except the primed part, or sections of the primed part, are to be used in place of test panels. TEST PROCEDURE TEST PROCEDUR
28、E Gloss CEMS GT-6B Intercoat Adhesion CEMS GT-5B Hardness CEMS GT-4D Humidity* CEMS GT-7E Adhesion CEMS GT-5A Conductivity CEMS GT-18 Xylene Rub CEMS GT-14A Gravelometer* SAE J400 the hold down area on each side and the emblem area. Other Parts: Other parts shall be tested in at least two locations
29、which will be covered in assembly NUMBER: MPAPS G-9005 TITLE: Prepaint Treatment, Plastic Parts REVISION: 1406 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liabi
30、lity. 2014 by Navistar, Inc. June 2014 Page 5 of 8 5.2 Frequency of Testing Until such time as mutually satisfactory statistical evidence demonstrating process capability has been presented, three randomly selected parts/components from each lot shall be tested for adhesion per CEMS GT-5A. 5.2.1 Def
31、inition Of Lot A lot consists of all similar/like parts produced in a continuous production run in a period of 24 hours or less. 5.3 Retest Provisions If any one test location on a part/component fails to meet the minimum adhesion requirements as per CEMS G-5, Part V, Grade -52 or -52HS, three addit
32、ional parts/components shall be tested and each location on all three parts must pass or the lot shall be subject to rejection. 6.0 SOURCE APPROVAL AND QUALITY CONTROL 6.1 Supplier Requirements All suppliers to NAVISTAR are required to be registered to ISO 9001 Quality System Requirements. NAVISTAR
33、will also accept TS-16949 registration as long as the supplier can also fulfill all AIAG PPAP (Production Part Approval Process) documentation and approval requirements. Suppliers must maintain their certification with an accredited registrar and must furnish copies of registration certificates to t
34、heir Corporate Buyer upon request. 6.2 Approval Parts supplied against contracts or purchase orders citing this specification shall be equivalent in all respects to those samples which were approved by the purchaser. No changes in formulation or processing practices are permitted without approval. I
35、n the event that changes in material, properties, processing practices, construction, color, or labeling of the product are required, the supplier shall notify Materials Engineering and Purchasing and Supplier Quality of the proposed change(s). Test data indicating conformance to all requirements of
36、 this specification, test samples, and new or amended or updated Material Safety Data Sheet(s) (MSDS), in accordance with CFR Title 29, Part 1910 shall be submitted with the request for change. 6.3 Process Control The supplier shall either perform and report results of tests on specific lots of part
37、s produced using ISO 9001 or TS-16949 guidelines, or provide statistical evidence of the lot having been produced in a state of statistical control and with a process capable of providing all required properties. The part supplier and the quality control manager of the using NAVISTAR plant may deter
38、mine testing and reporting requirements on specific products. 7.0 SHIPPING, PACKING AND IDENTIFICATION Parts shall be packaged and shipped in such a manner as to protect the surface finish in transit. Packing and identification will be in accordance with requirements of NAVISTAR Mfg. Standard MS-D-1
39、3. NUMBER: MPAPS G-9005 TITLE: Prepaint Treatment, Plastic Parts REVISION: 1406 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2014 by Navistar, Inc. Ju
40、ne 2014 Page 6 of 8 8.0 DESIGNATION ON DRAWINGS Example: Prime paint per MPAPS G-9005. The drawing may utilize the KCC symbol with a note that completed assemblies will comply with requirements of MPAPS G-9005. 9.0 TECHNICAL INFORMATION For further information related to the technical content of thi
41、s specification, contact: Suppliers may purchase controlled copies of this specification by contacting: Materials Engineering and Technology Dept. 10400 W. North Avenue Melrose Park, IL 60160 E-mail: MaterialsEngineeringN IHS Global Inc. 15 Inverness Way East Englewood CO 80112-5776 Phone: 1-800-854
42、-7179 E-mail: AutomotiveIHS.com Website: http:/ GENERAL INFORMATION (Not a Requirement) The following methods of preparation and priming are typical of those providing acceptable parts: Surface Finishing And Prime Painting Of Parts Receiving Heat Cured Topcoats 1. Repair all structural defects by pr
43、operly reinforcing the defect and cosmetically repairing it. 2. Putty fill all surface imperfections with a 2-part putty. Allow to set, then sand smooth. 3. Scuff sand entire repaired area surface with 280 grit paper. 4. Clean all significant surfaces. 5. Prime with a primer-sealer, approved to Grad
44、e -52 per CEMS G-5 Part V by Materials Engineering. 6. Bake in accordance with paint suppliers recommendations. A minimum conductivity reading of 110 on the Ransburg Model 236 sprayability meter shall be obtained on the primed surface after it returns to room temperature. Surface Finishing And Paint
45、ing Of Parts Receiving Air Dry Prime Or Topcoat 1. Repair all structural defects by properly reinforcing the defect and cosmetically repairing it. 2. Putty fill all surface imperfections. Allow to set, then sand smooth. 3. Scuff sand entire repaired area surface with 280 grit paper. 4. Clean all sig
46、nificant surfaces. 5. Prime with a primer approved for air-dry use by Materials Engineering to a dry film thickness of 0.025 mm (1.0. mil) minimum. 6. Allow two to six hours drying time, depending on film thickness, before applying topcoat, unless otherwise recommended by the paint supplier. NUMBER:
47、 MPAPS G-9005 TITLE: Prepaint Treatment, Plastic Parts REVISION: 1406 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2014 by Navistar, Inc. June 2014 Pa
48、ge 7 of 8 TABLE 1 APPEARANCE REQUIREMENTS REQUIREMENT ZONE I II III IV Orange Peel, min (Test per CEMS GT-29)* Or ACT comparison test * 4.5 7 4.5 7 3.5 6 - Craters, including porosity, greater than 1 mm dia. max. no. per square foot 1 2 2 3 2 Max Per Unit Dirt particles, max. no.* per square foot 3
49、1.5mm max 4 1.5 mm max. 6 1.5 mm max. unlimited 10 Max per Unit Fine Craters, including porosity, less than 1mm dia., max. no. per square foot 3 3 3 unlimited 2 Max Per Unit Solvent Pop None None None acceptable Overspray Discernible by Touch None None None acceptable Sags and Runs, max. no. per square foot None None None Unlimited Scratches Discernible by Touch None None None Acceptable if S
