1、 ENGINEERING STANDARDS Test Procedure SUPERCEDED EDS-T-7780 Test Method for Adhesion Properties for Organic Coatings This standard may be applied only for current projects. It is Superceded for all future projects and replaced by GMW14829. 8Td D98 9E=2e 4G - Note: 8 E:48t G8 =97 FF7 957%L+ , FG P-P
2、Program .Bd# GMW14829 ) $4=F7 957F$ . Copyright 2011 General Motors Company All Rights Reserved September 2011 Originating Department: GM Korea Engineering Standards Page 1 of 4 Version : 4 1 Scope Note: Nothing in this standard supersedes applicable laws and regulations. Note: In the event of confl
3、ict between the Korean and English language, the Korean language shall take precedence. 1.1 Purpose. This standard is used for evaluating the adhesion properties of organically coated metal and plastics. 1.2 Applicability. This test method applies to determining the adhesion properties of organic co
4、atings evaluated by peeling-off occurring in portions, cut in X on coating surfaces exposed before and after environmental testing. 2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/Specifications. None 2.2 GM Standards/Specificat
5、ions. EDS-M-1101 EDS-T-7759 2.3 Additional References. None 3 Resources 3.1 Equipment. 3.1.1 Cross Cut Tester. As specified in EDS-T-7759. Spacing between lines shall conform to the following table. Dry film thickness ( ) Spacing (mm) Number of cuts 8 88x 7 , F6* 72T8p) F$ . 1.1 +95 . ., E:48t 8Td D
6、9 %P %P D9+7 8 D# X-8) ,6: 2T .72P 86!# -I* d:4F7 ?U9IF$ . 2 4) E:4 / :0 : C-H +d%P 9I8 6# F 48 07 38%P E:48x 957F$ . 2.1 17 E:4 / . None 2.2 GM E:4 / . EDS-M-1101 EDS-T-7759 2.3 dA E:4 / . None 3 4G 88 3.1 4G 8/x . 3.1.1 Cross Cut Tester. EDS-T-7759 7 9P4%P 4G d) 17 ?!8 2T9I8t 6x(8 E7 &d*$ . 9 $* %
7、 ( ) ?!8 8 (mm) ?!8 c3L 65% Standard test result / E:4 4G 0 No peeling-off / -I* 68 Peeling-off of 65 % min. / 65 % 81 -I* . 5.1.2 Test Method B. After testing, record the rating of none peeling-off per the standard test result in percent. 5.1.2 4G - B-Type. 4G G E:4 07t /xF7 -I*%L: 68t D9 +8 9I$* %
8、) EdF$ . GM KOREA ENGINEERING STANDARDS EDS-T-7780 Copyright 2011 General Motors Company All Rights Reserved September 2011 Page 4 of 4 Version : 4 6 Safety This standard may involve hazardous materials, operations, and equipment. This standard does not propose to address all the safety problems ass
9、ociated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 7 Notes 7.1 Glossary. Not applicable. 7.2 Acronyms, Abbreviations, and Symbols. Not applicable. 8 C
10、oding System This standard shall be referenced in other documents, drawings, etc., as follows: Test to EDS-T-7780 9 Release and Revisions This standard was originated in December 1994. It was first approved by Engineering Standard Committee in December 1994. It was first published in December 1994.
11、6 6|987 $4F 7 9 ., E:48t 88G ,p: , 86 , 8/x &%8x E FF 3L 8$ . ., E:48t 87 $4F 170 4)%P +& 6|98 ,l9P8 F8x 9P4F:# 6#$ . &d(2P 17 987 95FF 6|980 I 1B* 9DF , -18 9PF 728 957 7 .* 9IF# 8t ., E:4 1788 =y8 1F8$ . 7 768 9I8 7.1 98,l 76 . F$-1F 68 . 7.2 66 -C dGl . F$-1F 68 . 8 Ed - $* ,l2P! $+ &%72P ., E:48
12、 87%T &# $80 M8 EdF$ . Test to EDS-T-7780 9 9P9I -C P9I 8)Y ., E:48t 1994“x 1287 E:4 -Gl4 .7 %L6 , d3TE:41,h7 8F 1994 “x 12 87 38%L6$ . ., E:48t 1994 “x 12 87 ) 9P9I / -PF%L6$ . Issue / P9I8)Y Publication Date / 38 88 Description (Organization) / 9PP9I76 (:04.2P ) 4 SEP 2011 Apply new Engineering Standard Template. Superceded (Polymer / Organic Material Lab Team) / 4 d3TE:4 64 957 . F9I957 =* (G)8*4G D4 )
