1、 ENGINEERING STANDARDS General Specification LIMITED USE EDS-T-7525 Test Method of Plastic Cam Cover Do Not Use on New Program; No Replacement. F(3D% ?- 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 October 2011 Orig
2、inating Department: GM Korea Engineering Standards Page 1 of 6 Version : 3 1 Introduction 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 and Appl
3、icability. This standard determines the general requirements of the plastic cam cover. 1.1.1 Type 1. Press insert type plastic cam cover. 1.1.2 Type 2. Insert over molding type plastic cam cover. 2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 Ext
4、ernal Standards/Specifications. None 2.2 GM Standards/Specifications. EDS-T-7143 GMW3059 2.3 Additional References. None 3 Test Preparation and Evaluation 3.1 Resources. 3.1.1 Calibration. The test facilities and equipment shall be in good working order and shall have a valid calibration label. 3.1.
5、2 Alternatives. Alternative test facilities and equipment may also be used. However, all measuring variables as specified in this standard shall be determined correctly with respect to their physical definition. 3.1.3 Test Piece. Select a finished product or a portion of it for a test sample accordi
6、ng to the test method and carry out the test more than 3 times (Number of test sample is three). 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 -C 957 -88 . ., 8t Plastic Cam Cover8 8-L 7 97 $4F 9IF$ . 1.1.1 Type 1. Press 68 type plastic cam cover
7、. 1.1.2 Type 2. Insert over molding type plastic cam cover. 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-T-7143 GMW3059 2.3 dA E:4 / . None 3 4G :4/x -C D4 3.1 4G 88 . 3.1.1 9I . 4G 2X/x7t 8/x# 9P 2e#8x -PHLF 8TGF 9I Fx:8x J66 F$ . 3.1.2 $4= 3L$ .
8、 $4= 4G 42X0 8/x4 17%T 3L 8$ . ,) ! ., E:47 +d%P +& ?U9I -3L&8t , ,p*95 9I87 8 9IGF 9I%L66 F$ . 3.1.3 4G D . 4G -7 &d( 7x9PE D# 7x9PE8 F .8x =x?F7 4G D8p) 17F%L , 3P 818 4G D8p) 4G F$ . GM KOREA ENGINEERING STANDARDS EDS-T-7525 Copyright 2011 General Motors Company All Rights Reserved October 2011 P
9、age 2 of 6 Version : 3 3.2 Conditions. 3.2.1 Environmental Conditions. 3.2.1.1 Standard Conditions in the Laboratory. Set the temperature and the relative humidity at (+232) E , (505) % respectively for the standard conditions. But, when the laboratory is not in the standard conditions, record the t
10、emperature and the humidity during the test. 3.2.1.2 Pre-Condition. Select a 72 hr-old product for a test sample and carry out a proper pre-condition for a detailed test method. 3.2.2 Test Conditions. Deviations from the requirements of this standard shall have been agreed upon. Such requirements sh
11、all be specified on component drawings, test certificates, reports, etc. 3.3 Instructions. 3.3.1 Air/Water Leak Test. Select a finished product for a test sample, mount it on the cam support at a given torque(0.8 ) 1.2 Kgfm), apply max. 0.5 kg/cm2 2 min of air pressure to the cam cover into the wate
12、r bath and visual-check it. 3.3.2 Weldability Test of Welded Area. Select a finished product for a test sample and use a UTM (Universal Test Machine) to evaluate the weldability degree (weldability, weld strength) of the cam cover and the baffle plate by separation force. 3.3.3 Impact Test at Low Te
13、mperature. Select a finished product for a test sample, mount it on the cam support at a given torque(0.8 ) 1.2 kgfm), after aging (-30) E 4 hours in the chamber (2.5 J) the steel ball of 500 g from 50 cm above, and visual-check it. 3.3.4 Insert Resistance Test. Select a finished product for a test
14、sample, remove the gasket, apply load until the insert is removed, checking load force from push pull gauge. 3.3.5 Saline Corrosion Resistance Test. Select a finished product for a test sample and test it based on EDS-T-7143-144. The test conditions are the following. 3.3.5.1 Test Condition. 35 E 14
15、4 hours in 5 % of salt water. 3.3.6 Fluid Resistance Test. Select a finished product for a test sample, mount it on the cam support at a given torque (0.8 ) 1.2 kgfm), and apply a sufficient amount of test solution on the surface. The test conditions are the following. 3.3.6.1 Test Conditions. 3.3.6
16、.1.1 Soak a white cloth in the solution and rub 10 times with the cloth. 3.2 8-L 9 . 3.2.1 G 9 . 3.2.1.1 4G 48 E:49 . 4G 48 E:41B# +(232) E8 7$ -C (505) %8 1$4 3$) F$ . $ , 4G 48 E:41B4 6x$ 77# 4G 48 7$7t 3$* d)F$ . 3.2.1.2 98=* 9 . 4G E8t 9P8G 7248 81 0F 9PE8x 2T9IF%L , 2l. 4G -7 &d( 959.F 68 4G 76
17、8x $E 4G F%L , 4G 98t $80 M$ . 3.3.6.1 4G 9 . 3.3.6.1.1 4G 768x H =7 ,oG4 10G ,l:* . GM KOREA ENGINEERING STANDARDS EDS-T-7525 Copyright 2011 General Motors Company All Rights Reserved October 2011 Page 3 of 6 Version : 3 3.3.6.1.2 Test solution: engine oil, brake fluid, coolant fluid, gasoline, liq
18、uid soap, power steering oil. 3.3.6.1.3 After aging 24 hours, apply 0.2 kg/cm2 2 min. of air pressure on the sample. 3.3.7 Oil Cap Resistance Test. Select a finished product for a test sample, free-fall it from 1 m above, and visual-check it. 3.3.8 Oil Cap Opening & Closing Torque Test. Select a fin
19、ished product for a test sample and use a torque wrench to measure the torque applied at a closure of the air cap. 3.3.9 Gasket Aspect Test. Before welding, put the test on a cam cover and a baffle plate under the following conditions. 3.3.9.1 Test Conditions. 3.3.9.1.1 Jig: transparent acrylic plat
20、e with a hole available for mounting. 3.3.9.1.2 Jig size: 400 mm (L) 250 mm (W) 20 mm (T). 3.3.10 Thermal Aging Test. Select a finished product for a test sample, mount it on the cam support at a given torque(0.8 ) 1.2 kgfm), replenish it with the specified engine oil, after aging 135 E 1000 hours i
21、n the oven and carry out the following. 3.3.10.1 Test Items. 3.3.10.1.1 Impact test. 3.3.10.1.2 Insert resistance test. 3.3.10.1.3 Oil cap resistance test. 3.3.10.1.4 Oil cap opening & closing torque test. 3.3.10.1.5 Residual screwing torque test. 3.3.11 Thermal Cycle Test. Select a finished product
22、 for a test sample, mount it on the cam support at a given torque(0.8 ) 1.2 kgfm), replenish it with the specified engine oil, repeat a cycle of (-30) E 14 hours : 130 E 8 hours : 150 E 2 hours seven times in the chamber, and carry out the following. 3.3.11.1 Test Items. 3.3.11.1.1 Impact test. 3.3.
23、11.1.2 Insert resistance test. 3.3.11.1.3 Oil cap resistance test. 3.3.11.1.4 Oil cap opening & closing torque test. 3.3.11.1.5 Residual screwing torque test. 3.3.12 Vibration Test. Select a finished product for a test sample, mount it on the vibration jig, and test it according to the following. 3.
24、3.12.1 Test conditions. 3.3.12.1.1 Temperature: 12 cycles of 120 E 4 hours : 150 E 1 hour : (-30) E 2 hours. 3.3.6.1.2 4G 76 : 7:7X8 , /).H .(F G F7972P 135 E 1000 hours Aging G $80 M8t 4G 8x 3LFF$ . 3.3.10.1 4G F+ . 3.3.10.1.1 Impact test. 3.3.10.1.2 Insert resistance test. 3.3.10.1.3 Oil cap resis
25、tance test. 3.3.10.1.4 Oil cap opening & closing torque test. 3.3.10.1.5 Residual screwing torque test. 3.3.11 Thermal Cycle Test. 7x9PE8x 4G E8p) 2TBF7 Cam Support7 9I Torque (0.8 1.2 Kgfm) 8=F 9I%P 7:7X88x .H .(F G F7972P -(-30) E 14 hours : 130 E 8 hours : 150 E 2 hours * 1 Cycle) 7 Cycle 3LF G $
26、80 M8t 4G 8x 3LFF$ . 3.3.11.1 4G F+ . 3.3.11.1.1 Impact test. 3.3.11.1.2 Insert resistance test. 3.3.11.1.3 Oil cap resistance test. 3.3.11.1.4 Oil cap opening & closing torque test. 3.3.11.1.5 Residual screwing torque test. 3.3.12 Vibration Test. 7x9PE8x 4G E8p) 2TBF7 Vibration 7 Jig 7 8= 4G F%L ,
27、4G 98t $80 M$ . 3.3.12.1 4G 9 . 3.3.12.1.1 7$ 9 : 120 E 4 hours : 150 E 1 hour : (-30) E 2 hours.* 1 Cycle) 12 Cycles. GM KOREA ENGINEERING STANDARDS EDS-T-7525 Copyright 2011 General Motors Company All Rights Reserved October 2011 Page 4 of 6 Version : 3 3.3.12.1.2 Vibration: Specified on relevant
28、drawing. 3.4 Safety. This standard may involve hazardous materials, operations, and equipment. This standard does not propose to address all the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and det
29、ermine the applicability of regulatory limitations prior to use. 3.5 Documentation. Samples of components or material released to this standard shall be tested for conformity with the requirements of this standard and approved by the responsible GM Department prior to the start of delivery of produc
30、tion level components or materials. Any change to the component or material, e.g., design, function, properties, manufacturing process and/or location of manufacture requires a new release of the product. It is the sole responsibility of the supplier to provide the customer, unsolicited, with docume
31、ntation of any change or modification to the product/process, and to apply for a new release. If not otherwise agreed to, the entire verification test shall be repeated and documented by the supplier prior to start of delivery of the modified or changed product. In some cases, a shorter test can be
32、agreed to between the responsible GM department and the supplier. 4 Requirements and Procedure 4.1 General Requirements. Make sure that there are no harmful defects such as conspicuous sink mark, void and surface separation. 4.2 Detailed Requirements. Carry out the test provided in the section 3.3 t
33、o meet the requirements in the Table 1. 3.3.12.1.2 :%9 : F$-$+7 9IF$ . 3.4 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$ . 3.5 : 2P* 9P) . 8 E
34、:47 8F 9P%P .E8! 8*8 4G D8t ., E:47 9I%P 4G 8x 7 98x +94P6 F+ , 61 )= 987 GM :04 .2P8 388x -O6x6 F$ . .E8! 8*7 862P &H88 , d# , 22e , 9P9 )9I ,* /D# 21:7t 4)%P 6&F -8($ -P2%T 7 49PE 4* 7F$ . )=8# +88 7= 7 .7t 14 68 9PE /21 )9I 18 - Gm8t P97 4F 2P* 9P)F6 F+ 4 9PE 4 4=8x F6 F$ . $* F84 6# F , )=8# P9
35、Gm8t -%P 9PE8 )= 987 98= : 4G 8x -L.) 3LFF 0* ,l2PGF6 F$ . 8. 77 86 GM :04 .2P7t )=888 F87 8F $%P : 4G 8x 44F 3L 8$ . 4 7 9 -C 4G 9) 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 )
