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 SPECIF
2、ICATION) NUMBER: CEMS GT-7B TITLE: Sanding Test For Paint 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 involv
3、e 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. Change N
4、otice: Replaced “International Truck and Engine Corporation” with “Navistar, Inc.” per corporate directive. 1.0 SCOPE This is a method for evaluating the performance of a dry film of paint when sanded. 2.0 MATERIAL 2.1 Bonderite CD- 10 or Bonderite 958 zinc phosphated steel panels, 100 x 150 mm (4 x
5、 6 inches), available from Advanced Coatings Technologies, 273 Industrial Drive, Hillsdale, Michigan 49242. OR Fiber glass reinforced plastic panels available from Materials Engineering, Navistar Inc., P. O. Box 1109, Fort Wayne, IN 46801-1109. 2.2 No. 360 sandpaper 2.3 No. 280 Stearated sandpaper 3
6、0 PROCEDURE 3.1 Prepare the appropriate quantity and type of panels for the grade of paint being tested according to the procedure specified in Test Method GT-13, Panel Preparation, proceeding up to but not including the step in which the primed and dried panels are sanded. 3.1.1 Two Bonderite CD-
7、10 or Bonderite 958 zinc phosphated steel panels - Grades -50, -55, and -55W 3.1.2 Four Bonderite CD- 10 or Bonderite 958 zinc phosphated steel panels - Grades -53 and -53A 3.1.3 Two fiber glass reinforced plastic panels - Grades -52 and -52HS For grades where four panels are prepared, two alternati
8、ve drying procedures, an air dry and an oven dry, are specified. For these grades, two panels will be dried according to the air drying procedure and the remaining two panels will be dried according to the oven drying procedure. For grades where two panels are prepared, only one drying procedure is
9、specified: for these grades, both panels will be dried according to this procedure. 3.2 Wet sand one-half of each panel with No. 360 sandpaper. Dry sand the other half of each panel with No. 280 stearated sandpaper. 3.3 Examine the sandpaper with the unaided eye; any evidence of loading by the paint
10、 or balling up will constitute a failure. For those grades where two panels are prepared, both will be tested. For those grades where four panels are prepared, both air-dried test panels and both oven dried test panels will be tested. 4.0 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-,-,-
