1、 ENGINEERING STANDARDS Test Procedure LIMITED USE EDS-T-7778 Test Method of High Temperature and Pressure Cleansing Device for Organically Coated Products Do Not Use on New Program; No Replacement. 8TdD9 9PE8 7 -62l=d 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 September 2011 Originating Department: GM Korea Engineering Standards Page 1 of 3 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 specifies the test method for determining the influences of high temperature - pressure washing exerted on the organically coated material, under the specified condition. 1.2 Applicability. This standard applies to organically coated
4、 materials of exterior parts which are likely to be discolored or decolored when washed by the high temperature - pressure cleansing device. 2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/Specifications. None 2.2 GM Standards/S
5、pecifications. EDS-M-1101 2.3 Additional References. None 3 Resources 3.1 Equipment. 3.1.1 Protective Wax (Shipping Wax). 3.1.2 High Temperature-Pressure Cleansing Device. Cleansing device capable of heating the temperature of cleansing solution to (+80 0-5) E and injecting. 3.1.3 Cleansing Solution
6、. Mixture of 80 parts of water and 20 parts of petroleum in volume. 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 8Td D99P8 E+8x 9I%P 9F72P8 7 -6 2l=4 8Td D99P7 -,?# 75F8x ?U9IFd 88F 4G -7 $4F7 9IF 8$ . 1.2 957 -88 . ., E:48t 7 -6 2l=4
7、 -1 , A1 &%8 7)X%L# 78 .E8 8Td D9+7 $4F7 957F$ . 2 4) E:4 / :0 : C-H +d%P 9I8 6# F 48 07 38%P E:48x 957F$ . 2.1 17 E:4 / . None 2.2 GM E:4 / . EDS-M-1101 2.3 dA E:4 / . None 3 4G 88 3.1 4G 8/x . 3.1.1 Protective Wax (Shipping Wax). 3.1.2 7 -6 2l=d . 2l= 768 7$* to (+80 0-5) E) 47( .1F 3L 8# 2l=8/x .
8、 3.1.3 2l= 76 . ,p0 DC)# (Petroieum)8x .Fp/x 80 : 208p) GpFF 76 . GM KOREA ENGINEERING STANDARDS EDS-T-7778 Copyright 2011 General Motors Company All Rights Reserved September 2011 Page 2 of 3 Version : 3 3.2 Test Piece. 3.2.1 Test pieces can be cut from any top-coated portion of (3005) mm (3005) mm
9、 in size. However, if shape or size of the top-coated part is not applicable, test pieces having a minimum area of 25 cm2 may be cut from other flat part. 3.2.2 When it is impossible to take samples a specified in 3.2.1, organically coated test pieces or slabs prepared especially shall be used. 3.2.
10、2.1 Size of test pieces (3005) mm (3005) mm. 3.2.2.2 Base metal to EDS-M-1101. 3.2.2.3 The test piece organically coated shall be manufactured according to requirements in 3.2.2.1 and 3.2.2.2. 3.2.3 When manufacturing or sampling test pieces as specified in 3.2.1 and 3.2.2, take care that the coated
11、 surface is not damaged. 3.2.4 For initial sample approval at least 3 test pieces and for routine quality control at least 1 test piece shall be used. 4 Procedures 4.1 Conditioning. The test piece shall be tested after conditioning in accordance with the following requirements. 4.1.1 Oven Drying of
12、Organic Coatings. 24 ) 30 hours after coating and baking 4.1.2 Air Drying of Organic Coatings. 72 ) 96 hours after coating and baking 4.1.3 For Components Delivered by the Supplier. The test shall directly be performed without conditioning. 4.2 Conditions. 4.2.1 Test Conditions. Deviations from the
13、requirements of this standard shall have been agreed upon. Such requirements shall be specified on component drawings, test certificates, reports, etc. 4.3 Instructions. 4.3.1 Divide the coated surface of the test piece into 2 and coat the one side with protective was and dry it at room temperature
14、for 24 hours minimum. 4.3.2 Inject the cleansing solution of (+80 0-5) E to the prepared test piece for (305) seconds by means of the of the high temperature-pressure cleansing device. 4.3.3 In this case, keep a distance of 5 cm between the coated surface of the test piece and the injecting nozzle.
15、3.2 4G D . 3.2.1 4G D8t (300r5) mm B (300r5) mm 8 A d) 1$ D9%P 6# 72P! =x?F 3L 88p+ , 959 +95 25 cm2 8 4D8x =x?F7 $ %P$ . 3.2.2 888 3.2.1 F8 -8p) 4D=x?4 .4#F 7 C-H :4/x%P 8TdD9 4D D# DD (SLAB)8x :4/xF$ . 3.2.2.1 4G D A d : (300 r 5) mm B (300 r 5) mm. 3.2.2.2 -HB 2: : EDS-M-1101 7 9I%P 2F 3 P8 4G D8
16、 Fx7F 9Id958 E:4* 4G 8x 88F2P# 2F 1P8 4G D8 Fx7F$ . 4 4G 92 2448 9F$ . 4.3.2 :4/x%P 4G D7 7 -6 2l= 8/x* 17F7 (30r5) ) 9P9I / -PF%L6$ . Issue / P9I8)Y Publication Date / 38 88 Description (Organization) / 9PP9I76 (:04.2P ) 3 SEP 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 )
