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. 2009 by Navistar, Inc. AUGUST 2009 Page 1 of 2 NAVISTAR, INC. CEMS (CORPORATE ENGINEERING MATERIAL SPECI
2、FICATION) NUMBER: CEMS GT-19 TITLE: Early Water Resistance Of Sealers And Paints CURRENT ISSUE DATE: August 2009 WRITTEN/REVIEWED BY: Materials Engineering APPROVED BY: Materials Engineering SUPERSEDES ISSUE OF: August 2001 PRINTED COPIES OF THIS DOCUMENT MUST BE VERIFIED FOR CURRENT REVISION This s
3、pecification 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 applicability of regulatory limits
4、 prior to use. Change Notice: Replaced “International Truck and Engine Corporation” with “Navistar, Inc.” per corporate directive. 1.0 SCOPE This is a method for evaluating the ability of the paint film to withstand water induced degradation in the incomplete stage of drying. 2.0 APPARATUS 2.1 Test
5、stand with clamping fixture capable of holding a quart container 2.2 Metal gallon or 4 liter container, at least 150 mm (6 inches) deep, the bottom of which is perforated with 45 - 1.6 mm (1/16 inch) diameter holes, equidistant from each other, arranged in circular fashion. 2.3 Timer 2.4 Thermometer
6、 3.0 MATERIAL 3.1 Bonderite CD-10 or Bonderite 958 zinc phosphated steel panels, 75 x 225 mm (3 x 9 inches), available from Advanced Coatings Technologies, 273 Industrial Drive, Hillsdale, Michigan 49242. 3.2 Water supply, sink 3.3 Absorbent paper, Kleenex, Kimwipes or equivalent 4.0 PROCEDURE 4.1 P
7、repare three panels according to the procedure specified in Test Method GT-13, Panel Preparation, Method F. 4.2 Age prepared panels for three hours in still air at 21 to 27C (70 to 80F). Note: For Grade -32W age the panels for 90 minutes: For Grade -32HS/Ur see GT-13 Method B 4.3 Arrange the contain
8、er under a faucet in such a way that the perforated bottom is 12 inches above the test panels. 4.4 Adjust the faucets to deliver 16 to 27C (60 to 80F) water into the container without overflowing, but maintaining at least 50 mm (2 inches) of water. Copyright Navistar International Corporation Provid
9、ed by IHS under license with INTERNNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NUMBER: CEMS GT-19 TITLE: Early Water Resistance Of Sealers And Paints CURRENT ISSUE DATE: August 2009 This document is restricted and may not be sent outside Navistar, Inc. or repro
10、duced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2009 by Navistar, Inc. AUGUST 2009 Page 2 of 2 4.5 Place the test panels under the perforated can and let remain undisturbed for a period of 15 minutes adjusting the shower flow to cov
11、er the panels. Note: For Grade -32W Paint; the time for the exposure period is extended to 30 minutes. 4.6 At the end of this period, remove the panels and dry with absorbent paper. 4.7 Examine panels with unaided eye; any evidence of wrinkling, film wash-off or blistering will constitute a failure. 5.0 REPORT Report whether the paint passes or fails this test. Copyright Navistar International Corporation Provided by IHS under license with INTERNNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
