1、 ENGINEERING STANDARDS Test Procedure LIMITED USE EDS-T-7746 The Methods of Resistance for Organic Finishes Do Not Use on New Program; No Replacement. 8TdD9 9PE8 !GF2e 4G - Note: 8 E:48t G8 =97 FF7 957%L+ , FG P-P Program 72P# 957%L: 6#$ . Copyright 2011 General Motors Company All Rights Reserved Au
2、gust 2011 Originating Department: GM Korea Engineering Standards Page 1 of 2 Version : 4 1 Scope Note: Nothing in this standard supersedes applicable laws and regulations. Note: In the event of conflict between the Korean and English language, the Korean language shall take precedence. 1.1 Purpose a
3、nd Applicability. This standard specifies the test method for determining the resistance to the specified reagents, or the chemical resistance, of organic - coated surfaces. 2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/Specif
4、ications. None 2.2 GM Standards/Specifications. EDS-M-1101 2.3 Additional References. None 3 Resources 3.1 Equipment and Reagents 3.1.1 Petroleum Ether. 3.1.2 Ethyl Alcohol. 3.1.3 Wool or Soft White Cloth. 3.2 Test Piece. 3.2.1 The test shall be carried out with the test pieces in a condition of pro
5、ducts or subparts, whenever possible. 3.2.2 Test pieces shall be of 250 mm length 200 m width and made of metals specified in EDS-M-1101. 3.2.3 Prior to test, test pieces shall be baked and dried, and used 72 hours after conditioning. 4 Procedures 4.1 Conditions. 1 P7 :0 : ., E:48 62P 0(8 468x 9PF$
6、4.2.2 4G D E+7 468x ,oH =8x 17 688 H8x 4F7 5G 7.)8p) ,l:*$ . 4.2.3 7A78x 17F7 4.2.1 4.2.2 8 4G 8x :FF$ . 5 4G $8Bd 5.1 D4 . 5.1.1 4G G E+7 A ( D# -1 , 7F 68x . 5.1.2 4G G 8TdD98 8i D# =8p)8 988 68x . 6 6|987 $4F 7 9 ., E:48t 88G ,p: , 86 , 8/x &%8x E FF 3L 8$ . ., E:48t 87 $4F 170 4)%P +& 6|98 ,l9P8
7、 F8x 9P4F:# 6#$ . &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 87%T &# $80 M8 EdF$ . Test to EDS-T-7746 9 9P9I -C P9I 8)Y ., E:48t 1994“x 1087 E:4 -Gl4 .7 %L6 , d
8、3TE:41,h7 8F 1994 “x 10 87 38%L6$ . ., E:48t 1994 “x 10 87 ) 9P9I / -PF%L6$ . Issue / P9I8)Y Publication Date / 38 88 Description (Organization) / 9PP9I76 (:04.2P ) 4 AUG 2011 Apply new Engineering Standard Template. Limited use with no replacement (Polymer / Organic Material Lab Team) / 4 d3TE:4 64 957 . F9I957 ($4=E:4 68 ) =* (G)8*4G D4 )
