GMNA-9984037-2000.pdf
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1、Material Specification Paint 9984037 Purge Solvent for Solvent Borne Enamel 1 Scope 1.1 Material Description. This specification defines the basic physical, chemical and performance re- quirements of purge solvents for solventborne paint materials. These include primers, basecoats, and clearcoats (1
2、 -component or 2-component). 1.1.1 Material Identification. Materials approved to these specifications are not compliant with pending regulations for hazardous air pollutants (HAPS). Us- age will be phased out by the year 2003 and replaced by materials approved to 9984304. 1.2 Cross-Reference of Rep
3、laced Specification. Not Applicable 2 References Note: Only the latest approved standards are appli- cable unless otherwise specified. 2.1 Normative. ASTM D268 ASTM D891B ASTM D86 ASTM D56-79 ASTM E203-92A 2.2 GM. GM9832P GM W3001 GMW3059 9984304 2.3 Additional. 40 CFR 261 Subpart D 3 Requirements 3
4、.1 Requirements on Delivery. 3.1.1 Chemical Requirements. Materials approved to this specification must be formulated for reman- ufacturing. Submission samples must include all chemical species anticipated. Purge blends are not interchangeable, and must be evaluated and approved for use with plant-s
5、pecific material, equip- ment, and cycles. 3.1.1.1 Composition Identification. A gas chro- matograph will be used to identify and characterize materials as part of the submission package. Once approved, composition of subsequent lots cannot vary by more than f 2 Yo by weight for any ingredi- ent. (T
6、olerances may be less than 2 Yo for certain ingredients or locations). All subsequent lots of the approved materials must be compositionally equiva- lent to the standard established during the approval process. 3.1.1.2 Flash Point (ASTM D56-79). No minimum requirement. Flash must be reported for eac
7、h mate- rial. 3.1.1.3 Non-Volatiles (ASTM D268). Maximum is 0.15 Yo by weight. 3.1.1.4 Hydrocarbon Content. Maximum amount is 55 Yo by weight of total solvent as determined by gas chromatography. 3.1.1.5 Water Content (ASTM E203-92A). 3.1.1.5.1 There shall be no free water. 3.1.1.5.2 Maximum water c
8、ontent of purge used for 2-component isocyanate materials is 0.2 Yo. 3.1.1.5.3 Maximum water content of purge used for 1 -component materials is 0.5 Yo. 3.1.1.6 Distillation (ASTM D86). Initial boiling point and dry (end) point must be established for each formulation. Once approved, maximum variati
9、on of these limits is f 5 “C. 3.1.2 Mechanical Requirements. Not Applicable 3.1.3 Physical Requirements. 3.1.3.1 Appearance (Visual Observation). Color must be water white. Material should be clear liquid that is free of haze and insoluble materials. Filtration with a one micron filter must be certi
10、fied. 3.1.3.2 Specific Gravity (ASTM D891 B). Maximum is 0.876 at 25 “C (77 “F). Variation from batch must be no greater than f 0.005 from the approved formu- lation. 3.1.3.3 Weight per Gallon. Maximum is 7.3 Ibs/gal. (876 g/l). Variation from batch to batch must be no greater than f 0.04 Ibs/gal fr
11、om the approved formu- lation. 3.1.3.4 Resistivity (Ransburg Meter 70367 or Equivalent). Minimum of 0.05 meg ohms. O Coovriaht December 2000 General Motors Corooration All Riahts Reserved Originating Department: North American Engineering Standards, Records and Documentation December 2000 Page 1 of
12、4 Copyright General Motors North America Provided by IHS under license with GM Licensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 06/23/2008 23:33:41 MDTNo reproduction or networking permitted without license from IHS -,-,- I 9984037 GM ENGINEERING STANDARDSI 3.1.4 Additional Require
13、ments. The supplier must provide pertinent data regarding composition, physi- cal characteristics, usage, emissions, and test infor- mation as part of a basic submission package. 3.1.4.1 PMRV Review. All materials must be evalu- ated through the Productive Material Review Process initiated by NAVO P
14、aint prior to plant implementation. 3.1.4.1.1 MSDS. A full-disclosure Material Safety Data Sheet must be provided to GM. 3.1.4.1.2 EAF. An Environmental Assessment Form (EAF) must be provided. 3.1.4.1.3 Change Notification. A supplier Notice of Proposed Change must be forwarded to NAVO Paint Enginee
15、ring to describe proposed material changes prior to any trials or production implementation. 3.1.4.1.4 Source Shipment Responsibility. All shipments must be made in clean, sealed containers which are clearly identified. A Certificate of Analysis must accompany all batch shipments. 3.2 Processing Req
16、uirements. 3.2.1 Chemical Requirements. Not Applicable 3.2.2 Mechanical Requirements. Not Applicable 3.2.3 Physical Requirements. 3.2.3.1 These purge solvents shall aggressively clean all residual paint from the internal surfaces of conventional and electrostatic application equipment during color c
17、hanges and before shutdown of the equipment. 3.2.3.2 Purge solvents must not be used for paint re- duction. They may not be used for booth or equipment cleaning unless the flash point is a minimum of 40 “C or there is a specific approval for an individual plant paint operation. 3.2.4 Additional Requ
18、irements. 3.2.4.1 Usage. The supplier or Chemical Manager is required to track amount of recovered solvent and re- port recycle amounts monthly (or as required) to plant engineering and environmental. The report must in- clude usage in gallons (total and per job) and VOCs (total and per job). It mus
19、t also include all pertinent information required for emission calculations. 3.3 Peformance Requirements. 3.3.1 Chemical Requirements. Not Applicable 3.3.2 Mechanical Requirements. Not Applicable 3.3.3 Physical Requirements. Not Applicable 3.3.4 Additional Requirements. 3.3.4.1 Odor (GM9832P - Metho
20、d C). Purge blends shall be compared to a control purge material. Both ED 50 and Intensity, I, shall be reported. The control material shall be designated by the responsible GM engineer. Any change in formulation must be re-eval- uated for odor. 3.3.4.2 Test Data. Supplier must provide NAO Paint Eng
21、ineering written reports of performance test re- sults as part of the submission package. 3.3.4.3 Test Colors. Unless otherwise agreed upon with the responsible engineer, testing must be done with three primer colors, two basecoat colors and clearcoat. Specific supplier source(s) will be deter- mine
22、d at test initiation. Primer colors are WA224E Gray, WA9753 Brt. White, and WA8774 Bright Red or agreed-upon alternates. Topcoat colors are a clean white and a medium red tone mica color. Paint must be reduced to spray vis- cosity with the exact solvent blend used at the target plant. 3.3.4.4 Effici
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