1、 ENGINEERING STANDARDS Test Procedure SUPERCEDED EDS-T-7606 Test Method for Determining the Dielectric Welding Properties of Upholstery Materials This standard may be applied only for current projects. It is Superceded for all future projects and replaced by GMI60347. !8 8:8 :0D 79E2e 4G - Note: 8 E
2、:48t G8 =97 FF7 957%L+ , FG P-P Program .Bd# GMI60347 ) $4=F7 957F$ . Copyright 2011 General Motors Company All Rights Reserved October 2011 Originating Department: GM Korea Engineering Standards Page 1 of 10 Version : 4 1 Scope Note: Nothing in this standard supersedes applicable laws and regulatio
3、ns. Note: In the event of conflict between the Korean and English language, the Korean language shall take precedence. 1.1 Purpose. The purpose of this standard is to determine the dielectric welding properties of automotive trim materials, foils, and garnish moldings. 1.2 Applicability. This standa
4、rd shall be used to determine the dielectric welding properties of automotive trim materials, foils, and garnish moldings and to evaluate the states after welding and the joint strength of welding area after aging about them, using the laboratory welding machine and the production welding machine. *
5、 But, the materials under test shall be welded in the same combination as it is welded in production. The test can be performed on only one test material at a time. Any other materials to be combined will be the standard materials of which the weldability have been proved in production. 2 References
6、 Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/Specifications. EDS-T-7507 2.2 GM Standards/Specifications. None 2.3 Additional References. None 1 P7 :0 : ., E:48 6 -LB*7# BFp( D8C (Tempilaq Paint) 3 5 mm E!8 DFF 2T8x 4#F F 6 -H*$ . (2 P# F
7、x7F 79E 7$.($ ! 2 P# “8t , 4 4: 7$ 88 BFp(8 Fx7F$ . 8); $ +8t 7$ 88x 17F# 8t 4G 484 9IGF8x dFd 88F2P 8$ .) 3.1.2.2 8 (8 88; 9Q +958t 25 cm2 8$ . GM KOREA ENGINEERING STANDARDS EDS-T-7606 Copyright 2011 General Motors Company All Rights Reserved October 2011 Page 3 of 10 Version : 4 The electrodes sh
8、all be 38 mm high (40 mm initial material - 2 mm machining allowance), and its surface shall be smooth (no engraving) to reduce weld defects. A sketch of the test tool is shown in Figure 1. For tests on embossed welds, a special tool with suitable electrodes shall be used. 3.1.3.2 Production Tool. F
9、or production welding tests, current production tooling shall be used. 3.1.4 Welding Machines. 3.1.4.1 Laboratory Welding Machine. The welding machine used shall have a high - frequency generator with an output of approx. 5 KW and use welding frequency of 27.12 MHz. It shall be equipped with means o
10、f maintaining the required pressures constantly over the required time. 3.1.4.2 Production Welding Machine. For production welding tests, current production welding equipment shall be used. 3.1.5 Spring Balance. For testing the adhesive strength of the welded joint, a spring balance of sufficient me
11、asuring range to cover the anticipated pull off force, shall be used. For approval purposes, the pull off force may be determined using a suitable tensile machine fitted with suitable clamps. 3.2 Test Piece. 3.2.1 For tests which utilize the laboratory test tool and welding machine; the test pieces
12、shall be cut (250250) mm dimension so as to be suitable for the welding machine. 3.2.2 For tests which utilize production tooling and welding machines; Current production parts shall be used as test pieces. 3.2.3 Number of Test Pieces. At least 10. 4 Procedures 4.1 Conditions. 4.1.1 Test Conditions.
13、 Deviations from the requirements of this standard shall have been agreed upon. Such requirements shall be specified on component drawings, test certificates, reports, etc. 4.1.2 Conditioning. 4.1.2.1 For Laboratory Test Welding. All materials shall be conditioned at +85 E 2.5K for at least 1 hour p
14、rior to welding. 4.1.2.2 For Production Welding. Welding shall be performed on materials in the as received condition without special conditioning. 8 98-8 “8# 38 mm (7 !A!6$ . ,h# 79E8x Fd 88F 4G 8t 959 C-F Ch8x 17F$ . 3.1.3.2 9P97 Ch . 9PE8 79E 4G 8x 88F2P# G88 17F# 9P9 Ch8x 17F$ . 3.1.4 79Ed . 3.1
15、.4.1 4G 47 79Ed . 79Ed# 6 5KW 8 )Y8x 4: :0D -P2d4 8 27.12 MHz 8 79E :0D3L* 17F$ . DF , 9IF: 48 % 6| Fx7F 6)Y8x 89IF 4F 3L 8# 3L$8x J 866 F$ . 3.1.4.2 9P97 79Ed . 9PE8 79E 4G 8x 88F G88 17F# 9P97 79Ed* 17F$ . 3.1.5 3F8* -l)$3 . 79E .888 9E= I$ 4G 8x 88F $-d#$ 7.F 7(8 3F8* -l)$3* 17F$ . 387 4G 4 , 959
16、 3L 8# 79Ed4 2X? %L66 F$ . 7$ ?U9I (* 6.299 388x 6d 987 4G 4 4G 8x G8Fd 88F 17F$ . 8) F 4G $ 79E .88 6|7 7$ ?U9I (* “W6 4FF+ 9P97 17%L# 8x .H $4EF 3L 8$) .E8 B%* .887# 9IFt (Stapling), .=9P (Stitching), 79E (Welding) &%8 .3L958 F 868x 4G Fd 987 FF$ . GM KOREA ENGINEERING STANDARDS EDS-T-7606 Copyrig
17、ht 2011 General Motors Company All Rights Reserved October 2011 Page 5 of 10 Version : 4 5 Data 5.1 Evaluations. Welds shall be evaluated both visually and by physical measurement of the strength of the welded joint after artificial aging. Visual examination shall be made both as welded and after he
18、at aging. 5.1.1 Visual Examination. Welds shall be visually examined for any changes, and adverse effect on serviceability. 5.1.2 Measurement of Joint Strength. Joint strengths shall only be measured on heat aged test pieces. 5.1.2.1 Heat Aging. The test pieces or components shall be heat aged for 5
19、 to 24 hours in an air circulating oven of 80 E 2.5K, previously pre-heated to the test temperature. 5.1.2.2 Test Conditions. Any test shall be performed immediately after removal from the oven (at approx. +80 E ). 5.1.2.3 Measurement Procedure. 5.1.2.3.1 Laboratory Test Pieces. The test piece and s
20、ubstrates shall be separated by parting the joint, and a sufficient length from the end of the test piece shall be remained so that the test piece is hooked to the end of spring balance. The strength of the joint shall be measured by exerting a force on the spring balance, acting at an angle of 150
21、to the welded joint (see Figure 2). For welded combinations involving PVC garnish moldings, the angle of the test shall be 120. The separation rate shall, as far as possible, be uniform and shall not exceed 5 mm/sec. The minimum force recorded on the spring balance during separation shall be noted i
22、n N. 5.1.2.3.2 Production Assemblies. Immediately prior to measuring the joint strength, for only one joint being tested, the assemblies shall be cut so that the joint under examination is in the center of the strip. The joint strength shall be measured along the entire length of the joint, as per 5
23、.1.2.3.1. All combinations of all materials shall be tested. 5.2 Requirements. 5.2.1 Visual Examination. Visual examination, shall be carried out both after welding and after heat aging, shall indicate that the weld joint is of normal appearance, and shows no melting mlisters, cuts or change in colo
24、r near or in the joint. Any signs of burning or puncturing of the test piece shall be cause for rejection. The substrate kind of joint shall not be recorded. For example, fabric, fiber, embossed etc. patterns shall not be visible. 5.2.2 Joint Strength. The recorded values of joint strengths for vari
25、ous assembly conditions shall be more than the values shown on the attached diagrams. 5 4G $8Bd 5.1 D4 . 79E 1B# 8U6| 17t 888958 “G (Ageing) G ,p*958 ?U9I -8p) 9E= I$* D4F$ . 8U6| 1# 79E -C 7( “G G +% 44F$ . 5.1.1 8U6| 1 . 79E .887 6& -G! 177 .*F 75F 8T,h* 1F$ . 5.1.2 9E= I$8 ?U9I . 9E= I$# 7( “G 98
26、x ? 4G D +8x 4: ?U9IF$ . 5.1.2.1 7( “G . 4G D8! .E&8x 4G 7$: 7.F l8+A !h$ . 3F8* -l)$34 9E= .887t 150 9I$8 58x 8*$) F G H8x 4F7 9E= I$* ?U9IF$ . (,* 2 =l9 ). PVC 84 +& (Garnish Moulding)8 F F%P 79E8t 1208 5$) 4G F$ . .*2$# 4#F F 89IF F%L 5 mm/sec* 28 H$ N $88) d)F$ . 5.1.2.3.2 9PE . 9E= I$8 ?U9I :98
27、7 F 8 9E= .88+8x 4G Fd 88F 9E= .884 47$ 7X$) 9PE8x 8*$ . 9E= I$# 5.1.2.3.1 92 9E=I$7t8 4 Table 2: Seat Assembles and Heel Mats: Relationship the Dielectric Weld Joint Width and the Minimum Joint Strength / E 1: Seat Assembles and Heel Mats: :0D 79E .888 E!0 2 9E=I$7t8 4 GM KOREA ENGINEERING STANDARD
28、S EDS-T-7606 Copyright 2011 General Motors Company All Rights Reserved October 2011 Page 9 of 10 Version : 4 Figure 1: Arrangement of the Test Piece and the Test Tool for Welding Test / ,* 1: 79E 4G 4 4G D -C 4G Ch -d?$ GM KOREA ENGINEERING STANDARDS EDS-T-7606 Copyright 2011 General Motors Company All Rights Reserved October 2011 Page 10 of 10 Version : 4 Figure 2 / Measurement of Joint Strength after Welding / ,* 2: 79EG8 9E=I$ ?U9I
