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 SPECIF
2、ICATION) NUMBER: CEMS GT-6D TITLE: Holdout Of Paint (Flash-Dry) 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 specification may
3、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 use. Ch
4、ange Notice: Replaced “International Truck and Engine Corporation” with “Navistar, Inc.” per corporate directive. 1.0 SCOPE This is a method for determining the degree to which a flash-drying primer affects the glossiness of a subsequent top coat of paint. 2.0 APPARATUS 20 degree glossmeter, Gardner
5、 or equivalent 3.0 MATERIAL 3.1 Bonderite CD-10 or Bonderite 958 zinc phosphated steel panel, 100 x 300 mm (4x12 inches), available from Advanced Coatings Technologies Inc., 273 Industrial Drive, Hillsdale, Michigan 49242. 3.2 Masking tape, 75 mm (3 inches) wide. 4.0 PROCEDURE 4.1 Using masking tape
6、 as shown in Figure below, cover the central portion of each of two Q-Panels. M AS K1 1 4 m m( 4 .5 i nc he s )7 5 m m( 3 i nc he s )4.2 Prepare both panels according to the procedure specified for Grade -54 in Test Method GT-13, Panel Preparation. After the 60 second flash-dry, strip the tape off b
7、oth panels before applying the enamel. Use an enamel which is normally employed with Grade -54 primer. 4.3 Using the 20 degree glossmeter, determine the gloss reading of the enamel on the unprimed (masked) portion of each panel. Record this as value A. Copyright Navistar International Corporation Pr
8、ovided by IHS under license with INTERNNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NUMBER: CEMS GT-6D TITLE: Holdout Of Paint (Flash-Dry) CURRENT ISSUE DATE: August 2009 This document is restricted and may not be sent outside Navistar, Inc. or reproduced withou
9、t permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2009 by Navistar, Inc. AUGUST 2009 Page 2 of 2 4.4 Determine the 20 degree glossmeter reading of the enamel on the primed portion of each panel. Record this as value B. 5.0 CALCULATIONS Calculate
10、the percentage holdout of the primer for each of the panels: Percent holdout of the primer = BA x 100 6.0 REPORT Report the minimum percent holdout observed from both panels. Copyright Navistar International Corporation Provided by IHS under license with INTERNNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
