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-10 TITLE: Heated Paint Stability Test 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 i
3、nvolve 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. Cha
4、nge Notice: Replaced “International Truck and Engine Corporation” with “Navistar, Inc.” per corporate directive. 1.0 SCOPE This is a method for determining the suitability of paint for application at an elevated temperature. 2.0 APPARATUS 2.1 Nordson Versa Pump 2.2 Nordson HA-1 Paint Heater 2.3 Nord
5、son Versa Airless Gun 2.4 Air-tight Container 2.5 No. 4 Ford Cup per ASTM D 1200 3.0 MATERIAL Solvent compatible with the grade of paint being tested. 4.0 PROCEDURE 4.1 Thoroughly clean the apparatus with solvent. Visually examine the pump filter to insure its cleanliness. 4.2 Charge paint which has
6、 been prepared for testing according to the steps outlined in CEMS G-5, Part I, Section B, under “Sampling Procedure”, to the system in such a manner that any excess solvent remaining in the system after cleaning is collected in a separate container. 4.3 Circulate the paint for five minutes accordin
7、g to instructions in the Nordson Pump manual 4.4 Circulate the paint through the heater and the spray gun hoses. Adjust the pressure to 4.8 MPa (700 psi) 4.5 With the nozzle removed, draw off sufficient paint sample to conduct a viscosity test as measured with a No. 4 Ford Cup per ASTM D 1200. Deter
8、mine and record the initial viscosity at 21 to 27 C (70 to 80 F). Copyright Navistar International Corporation Provided by IHS under license with INTERNNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NUMBER: CEMS GT-10 TITLE: Heated Paint Stability Test CURRENT ISS
9、UE DATE: August 2009 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 2 of 2 4.6 Turn on the heaters and bring pai
10、nt to a temperature of 82 + 3C (180 + 5F) in approximately 10 minutes 4.7 Circulate the paint through the system for 6 hours while maintaining this temperature. 4.8 Remove sufficient paint sample for a viscosity test, place in an air-tight container and cool to 21 to 27C (70 to 80F). Using the No. 4
11、 Ford Cup per ASTM D 1200, determine and record the viscosity of the paint after heating. 4.9 Drain the paint from the system and examine the pump filter with the unaided eye for evidence of conglomerates or jelling. 5.0 REPORT Report the following information: 5.1 The change in viscosity after the
12、6 hour circulation period. 5.2 Filter appearance: the paint will pass if no evidence of conglomerates, jelling or other deposits is observed on the filter pump. Copyright Navistar International Corporation Provided by IHS under license with INTERNNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
