1、 ENGINEERING STANDARDS Test Procedure LIMITED USE EDS-T-7535 Test Method for the Chemical Resistance of Plastic Components Applied to Engine Room Do Not Use on New Program; No Replacement. 7:*,7 957%L# F(3D% 9PE8 !GF2e 4G - Note: 8 E:48t G8 =97 FF7 957%L+ , FG P-P Program 72P# 957%L: 6#$ . Copyright
2、 2011 General Motors Company All Rights Reserved October 2011 Originating Department: GM Korea Engineering Standards Page 1 of 4 Version : 3 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
3、Korean language shall take precedence. 1.1 Purpose. This standard aims at specifying chemical resistance test methods and requirements of automobile plastic parts. 1.2 Applicability. This standard applies to plastic parts in the vehicle engine room (cam cover, air intake manifold, distributor water,
4、 thermostat housing, etc.) with respect to resistance to chemicals to which such parts are likely to be exposed. 2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/Specifications. EDS-T-7525 EDS-T-7528 2.2 GM Standards/Specificatio
5、ns. None 2.3 Additional References. None 3 Resources 3.1 Equipment and Reagent 3.1.1 Reagent or chemicals needed for each test (Engine oil, brake oil, anti-freezer, gasoline, liquid soap, power steering oil, calcium chloride saturated solution, battery solution, etc.). 3.1.2 Pressurizing equipment c
6、apable of applying specified air pressure. 3.2 Test Piece. 3.2.1 Either a finished products or its part may be used as test samples. 1 P7 :0 : ., E:48 6&F !7$ :4-8! 9I8x $4=F 3L 6$ . :0 : F67t 7568 18 88x 7 , F6* 72T8p) F$ . 1.1 +95 . ., E:48t 8% =7 F(3D% 9PE8 !GF2e 4G - -C 7 7 $4F7 9IF$ . 1.2 957 -
7、88 . ., E:48t 8% = 7:*, (Engine Room)7 17%L# F(3D% 9PE (Cam Cover, Air Intake Manifold, Distributor Water, Thermostat Housing &% )7 $4F7 9E= 4#2e8 8# GF6E7 $4F !2e D4* 88F 4G 7 957F$ . 2 4) E:4 / :0 : C-H +d%P 9I8 6# F 48 07 38%P E:48x 957F$ . 2.1 17 E:4 / . EDS-T-7525 EDS-T-7528 2.2 GM E:4 / . None
8、 2.3 dA E:4 / . None 3 4G 88 3.1 4G 8/x -C 46 . 3.1.1 558 4G 3LF7 Fx7F 46 D# GF6E (7:7X8 , /).F 68 9I%P 4G 768x $E F G , :06: 4G 9 (4.2.4 9 7 .* G8F$ . ($ , $+7 4F# )d68 9I%L6 8: 6# .E8 7 , 46 4G 8x 9P7F$ .) 4.2.4 4G 7$# $80 M8t &) .*F7 $+7 9IF$ . & 4G 7$ A 17 B (602) E C (1252.5) E D $+7 -$ 9P 4.2.
9、5 4G 488t $80 M8t &) .*F7 $+7 9IF$ . & 4G 48 1 1 48 2 24 48 3 $+7 -$ 9P GM KOREA ENGINEERING STANDARDS EDS-T-7535 Copyright 2011 General Motors Company All Rights Reserved October 2011 Page 3 of 4 Version : 3 5 Data 5.1 Evaluations. 5.1.1 After test, test sample shall show no sign of softening, swel
10、ling, discoloration, deformation, crack, etc. 5.1.2 After pressurizing test in clause 4.2.3, there shall be no air leak from parts under specified pressure. 6 Safety This standard may involve hazardous materials, operations, and equipment. This standard does not propose to address all the safety pro
11、blems associated 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 applic
12、able. 8 Coding System This standard shall be referenced in other documents, drawings, etc., as follows: 5 4G $8Bd 5.1 D4 . 5.1.1 4G G 4G E7 7$G , .E8 , -1 , -GI , Crack &%8 666 F$ . 5.1.2 4.2.3 9 G818 666 F$ . 6 6|987 $4F 7 9 ., E:48t 88G ,p: , 86 , 8/x &%8x E FF 3L 8$ . ., E:48t 87 $4F 170 4)%P +&
13、6|98 ,l9P8 F8x 9P4F:# 6#$ . &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 87%T &# $80 M8 EdF$ . English Chemical Resistance Test to EDS-T-7535 - Brake solution - A
14、 - 2 - 0.5 Kg/cm2, or no sign of softening, swelling, discoloration, deformation, crack, etc Requirements Test Time Test Temperature Test Solution Test Method Designation ,l !GF2e 4G - EDS-T-7535 /) 9P9I / -PF%L6$ . Issue / P9I8)Y Publication Date / 38 88 Description (Organization) / 9PP9I76 (:04.2P ) 3 OCT 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 )
