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 1 NAVISTAR, INC. CEMS (CORPORATE ENGINEERING MATERIAL SPECI
2、FICATION) NUMBER: CEMS GT-18 TITLE: Dry Film Conductivity Of A Primer 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 specificatio
3、n 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 prior to u
4、se. Change Notice: Replaced “International Truck and Engine Corporation” with “Navistar, Inc.” per corporate directive. 1.0 SCOPE This method is for the determination of dry film conductivity. 2.0 APPARATUS 2.1 Recirculating oven capable of maintaining a temperature of 49 + 3C (120 + 5F) 2.2 Conduct
5、ivity or “sprayability” meter, Ransburg Model 236 or equivalent 3.0 MATERIAL Fiber glass reinforced plastic (FRP) panels available from Materials Engineering, International Truck and Engine Corporation., P. O. Box 1109, 2911 Meyer Road, Fort Wayne, Indiana 46801-1109. 4.0 PROCEDURE 4.1 Prepare two p
6、anels according to the procedure specified for Grade -52 in Test Method GT-13, Panel Preparation, Method H. Proceed up to but not including the step in which the primed and dried panels are sanded. 4.2 Age the panels for 72 hours in a recirculating oven at 49 + 3C (120 + 5F), remove and cool to 21 t
7、o 27C (70 to 80F). 4.3 Using the sprayability meter, take readings on each panel at three different locations and record the lowest value. If the primer system consists of more than one coat, the final coat will be checked for conductivity. For primers with alternate drying procedures, conductivity
8、readings will be taken for each procedure. 5.0 REPORT Record and report whether the paint passes or fails this test. If alternate drying procedures are evaluated, record and report these results also. Copyright Navistar International Corporation Provided by IHS under license with INTERNNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
