NAVISTAR MPAPS D-7133-2014 Material Process and Quality Control Requirements for Liquid Composite Molded Parts.pdf
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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. DECEMBER 2014 Page 1 of 4 NAVISTAR, INC. Material, Parts, and Process Specificatio
2、ns (MPAPS) NUMBER: MPAPS D-7133 Former Designation: TMS-7133 TITLE: Material, Process and Quality Control Requirements for Liquid Composite Molded Parts CURRENT REV No.: 1412 DATE: Dec. 2014 WRITTEN/EDITED BY: Materials Engineering APPROVED BY: Materials Engineering SUPERSEDES: TMS-7133 Aug. 2006 PR
3、INTED COPIES OF THIS DOCUMENT MUST BE VERIFIED FOR 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 an
4、d health practices and to determine the applicability of regulatory limits prior to use. Change Notice: Changed to new MPAPS format; editorial changes. 1.0 APPLICATION This specification describes engineering property and quality requirements for the selection of those materials to be utilized in th
5、e Liquid Composite Molding process (LCM). This includes such materials as dicyclopentadiene (DCPD) and urethane. 2.0 SCOPE This specification covers general, material property requirements, tooling requirements, surface appearance, pre-paint requirements, PPAP, quality and quality control, source ap
6、proval, shipping and identification requirements and designation on drawings for parts produced using the LCM process. 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 spec
7、ification. 3.0 REFERENCE DOCUMENTS Unless otherwise specified, the latest issue of all referenced standards shall apply. The following Specifications, Standards, and Regulations are referenced in this specification. Quality System Standard ISO 9001 or TS-16949 ASTM D790 CFR Title 29, Part 1910 ASTM
8、D638 NAVISTAR Manufacturing Standard MS-D-13 ASTM D570 NAVISTAR MPAPS B-50 ASTM D792 NAVISTAR CEMS Test Method DT-4 SAE J1344 NAVISTAR CEMS Test Method GT-5A Metton Post Molding Guide * NAVISTAR MPAPS G-9005 * The Metton Molding Guide is available from: Metton of America Inc. 3800 Camp Creek Pky. Bu
9、ilding 1800 Suite 126 Atlanta GA 30331 NUMBER: MPAPS D-7133 TITLE: Material, Process and Quality Control Requirements for Liquid Composite Molded Parts REVISION: 1412 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Stan
10、dards. Suppliers are required to assume all patent liability. 2014 by Navistar, Inc. DECEMBER 2014 Page 2 of 4 4.0 GENERAL QUALIFICATION Individual parts of the composite/assembly must meet all of the requirements of the material specification(s) shown on the engineering drawing for the part and/or
11、subassembly in addition to meeting all requirements of this specification. 4.1 Tooling requirements Selection of tooling materials, construction methods and maintenance procedures shall be such that a minimum of 30,000 parts can be produced without deterioration of the surface finish. After the init
12、ial production (30,000 pieces), repair of the molds is restricted to a maximum of 25% of the mold surface and such repair shall not result in degradation of the surface quality of the part. 4.2 Material Properties Property ASTM Method Unless otherwise specified DCPD Requirement Density, max, kg/m3 D
13、 792 1.05 Water absorption (24 hrs), max. D 570 0.5% Tensile Strength, min D 638 6.5 ksi Tensile Modulus, min D 638 250 ksi Flexural Strength, min D 790 10 ksi Flexural Modulus, Tangent, min D 790 250 ksi Gardner Impact, -20C, min CEMS DT-4 8.0 ft-lbs 4.3 Part Marking As an aid to recovery and recyc
14、ling of plastic parts, each part shall be marked to identify the type of polymeric material the part is comprised of. Part marking shall be in accordance with SAE J1344. Each part shall be identified so as to provide traceability to resin lot, molding date, and operator. 4.4 Surface Appearance This
15、requirement applies to parts identified on the drawing by a zone designation as per MPAPS G-9005. Parts such as hoods, fenders, or other highly visible parts are considered to be Zone I as per MPAPS G-9005. The surface is to be uniform, i.e. no areas of discontinuity, blisters, cracks, chips etc., a
16、re allowed. Small defects, such as pinholes, pits and small dirt particles, are to be minimized. No more than 12 of these small defects per part, or 6 within a 3-square inch (1935 mm2) area, is permitted. 4.5 Pre-paint Finish For parts requiring a pre-paint finish, the pre-paint treatment will confo
17、rm to the requirements of MPAPS G-9005. Parts requiring a pre-paint finish should be prepared in accordance with the resin/material suppliers recommended practice, e.g., per the Post Molding Guide for Metton . Surface appearance requirements will be in accordance with the zone descriptions in MPAPS
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