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1、I GENERAL MOTORS ENGINEERING STANDARDS I Materials and Processes - Paint I COATING, ANTICORROSION, PENETRANT, AMBER 9982150 1 SCOPE. This specification covers a corrosion preven- tive material which must provide a protective coating for steel and painted steel surfaces. The material is designed for
2、spray applications to penetrate the crevices to which it is applied. The steel may have been treated with various phosphates, production primers, sealers, and topcoats. Compatibility with each of these substrates in a variety of conditions must not affect the corrosion inhibiting properties of the a
3、nticorrosion coating. It will usually be applied in the post oven areas of normal paint operations. It shall be homogeneous, free of chlorinated solvent, asphalt, or fibrous filler such as asbestos. It shall dry to a permanently soft coating without sagging or refluxing upon itself. The visibility o
4、f the material is enhanced by blacklight. 2 REFERENCED STANDARDS. GM4298P GM9511P GM4465P GM9536P GM9010P 9980793 GM901 1P 998 1062 GM9032P 9984017 GM9505P 9984070 ASTM D56 ASTM 2369 SAE 1008 SAE 1010 3 REQUIREMENTS. The material shall be supplied with all thinners added and be appliable in the as r
5、eceived condition. The material must contain exempt solvent or blends so that environmental control regulations are met. The corrosion compound shall meet the requirements of this specification on bare and ELPG surfaces. 3.1 Physical Properties (See Table 1). Properties High Temperature Plow Neutral
6、 Salt Spray, 500 h Corrosion Cycle, 30 cycles Humidity Resistance, 500 h Reverse Cold Impact; Two 2.8 Joules at -28.9 C Salt Solution Partial Immersion Detergent Solution Partial Immersion Topcoat Cleanability Topcoat Compatibility Penetration Crevice Protection Properties Color Solids % by mass, mi
7、n. Flash Point C, min Volatile Organic Content, kg/L, max TABLE 1 Values 1 Test Methods Amber, Natural Color I 60 18 0.359 (3.0 lbs/gallon max) GM9010P ASTM D56 ASTM D2369 3.2 Performance Requirements (See Table 2). 3.2.1 Test Methods. Test method references are shown in Table 2 with each of the req
8、uirements. The following notes state the requirements where formal test methods do not exist. 3.2.2 The material is to meet this specification on solvent cleaned cold rolled steel panels coated with cathodic ELPO 9984017, Uniprime 9984070, or production topcoat. The material is allowed to air dry 72
9、 h prior to test, unless otherwise noted. NOTE 1: The material shall withstand 168 h of partial immersion in a 5% salt water solution at 100% RH and 38 C. After removal from test, panels shall be lightly hand rubbed under 38 + 3 C tap water to remove degraded material. NOTE 2: The material shall wit
10、hstand 168 h of partial immersion in detergent solution consisting of 2.5 g of Dupont #7 car wash compound per liter of tap water. The test is similar to above, except conducted at 24 2 3 C. TABLE 2 VallleS Test Methods No flow at 250 elm No rust at 50 c No rust at 50 c No defects No separation io m
11、inutes at 93 C GM4298P GM9505P, Cycle G GM4465P GM9032P No rust, no removal No rust, no removal Removable, no staining No discoloration 500 times gap width and door and deck lid hems No rust after 10 wks on hem flanged panels or door and deck lid hems NOTE 1 NOTE 2 NOTE 3 NOTE 4 GM9536P NOTE 5 SEPTE
12、MBER 1989 PAGE 1 9982150 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 20:05:18 MDTNo reproduction or networking permitted without license from IHS -,-,- - 9006379 0002903 7L2 m I GENERAL MOT
13、ORS ENGINEERING STANDARDS I Materials and Processes - Paint I COATING, ANTICORROSION, PENETRANT, AMBER 9982150 NOTE 3: After 168 h, the material is to be readily removable from freshly coated topcoat surfaces, with 9981062 or 9980793 solvent, without staining or discoloration of the topcoat. 3.4 Sta
14、bility Requirements. After 6 months of laboratory testing or plant mixing at 24 f 10 C, the material shall meet the specification. NOTE 4: After being subjected to 70C for 336 h, and removal of the antiwrrosion coating with 9981062, no staining or discoloration of the topcoat shall be noted. 4 SOURC
15、E SHIPMENT RESPONSIBILITY. It will be the responsibility of the supplier to insure that the material is not exposed to temperatures during shipment which would cause the material to fail to meet any of the requirements of this specification. NOTE 5: On hem flanged panels no face or crevice corrosion
16、 5 INITIAL SOURCE APPROVAL. No shipment shall be is to be visible after 10 wks, alternating between the Corrosion made by any supplier until representative initial production Cycle Test (GM9505P, cycle G) and the Scab Test samples have been approved by engineering as meeting the (GM951 IP), a week a
17、t a time. requirements of this specification. 3.3 Process Requirements (See Table 3). 3.3.1 Plant application is either airless spray or air assisted fixture application. Coating shall form a wet uniform fti of lOO-4OOjun. A fillet is to be formed in the specified lower hem flange areas to obtain op
18、timum corrosion protection and to allow the material to penetrate into the hem flange. 5.1 Completed copies of the GM Material Safety Data Sheet and Critical Material Register (available from the engineering department or laboratory), or equivalent, must be submitted with any new submissions or wher
19、e a composition change has occurred. TABLE 3 6 INSPECTION AND REJECTION. All shipments of material or parts under contract or purchase order manufac- tured to this specification shall be equivalent in every respect to the initial samples approved by engineering. There shall be no changes in either f
20、ormulation or manufacturing processes permitted without prior notification and approval by engi- neering. Lack of notification by the supplier constitutes grounds for rejection of any shipment. While samples may be taken from incoming shipments and checked for conformance to this specification, the
21、supplier shall accept the responsibili- ty for incoming shipments meeting this specification without dependence upon purchaser s inspection. Type of Application I Parameter Recodation Airless spray Material pressure 1400-2800 kPa Filter size .4 mm Spraying Systems 197ss Co. Spray Tip Spray wand Min
22、of 450 cm length for appli- cation to body cavities Fixture Applied Material pressure 144OkPa WaX Air pressure 560 kPa Filter size .5 mm To check for a plugged tip, spraymg with the 197064s nose cone after the cap has km removed should result in 3 separate jets to form a T. 7 APPROVED SOURCES. Engin
23、eering qualification of an approved source is required for this specification. Only sources listed in the GM Corporate Materials File under this specification number have been qualified by engineering as meeting the requirements of this specification. 8 GENERAL INFORMATION. This specification was or
24、iginated by Fisher Body in September 1983 and completely revised and approved by the Paint committee in September 1989. 9982150 PAGE 2 SEPTEMBER 1989 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 20:05:18 MDTNo reproduction or networking permitted without license from IHS -,-,-