1、 ENGINEERING STANDARDS Test Procedure LIMITED USE EDS-T-7782 Test Method for the Thickness of the Dried Film of Organo-Coated Products Do Not Use on New Program; No Replacement. 8TdD99PE8 9 $*% ?U9I- Note: 8 E:48t G8 =97 FF7 957%L+ , FG P-P Program 72P# 957%L: 6#$ . Copyright 2011 General Motors Com
2、pany All Rights Reserved September 2011 Originating Department: GM Korea Engineering Standards Page 1 of 4 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
3、take precedence. 1.1 Purpose. This standard specifies the test method for measuring the thickness of the dried film of organo-coated products without generating damage on the face. 1.2 Applicability. This standard applies to measuring the thickness of organic coating films on ferrous and non-ferrous
4、 metal bases within the range of 10 ) 1200 . 2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/Specifications. None 2.2 GM Standards/Specifications. None 2.3 Additional References. None 3 Resources 3.1 Equipment. 3.1.1 Elcometer.
5、The one which can measure the thickness of the dried film applied on ferrous and non-ferrous metal bases by using the principle of electromagnetic induction without generating damage, and consists of such parts as shown in the following. 3.1.1.1 Regulator / Indicator. 3.1.1.2 Probe. A device which m
6、easures the thickness of the test piece by contact and is classified into ferrous and non-ferrous types. 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 D9+8 % * E+8x 21F: 6 ?U9IF# 4G -7 $4F7 9IF 8$ . 1.2 957 -88 . ., 4G -8t = (Ferro
7、us) -C /x= (Non-Ferrous) 07 38%P E:48x 957F$ . 2.1 17 E:4 / . None 2.2 GM E:4 / . None 2.3 dA E:4 / . None 3 4G 88 3.1 4G 8/x . 3.1.1 Elcometer. 988d 8T$ (Electro-Magnetic Induction) 8* 87F7 E+ /xDh -48p) = -C /x= . (Probe). = -C /x= =4P 8Td D98 $* % * ?U9IF# 8? . GM KOREA ENGINEERING STANDARDS EDS-
8、T-7782 Copyright 2011 General Motors Company All Rights Reserved September 2011 Page 2 of 4 Version : 4 3.1.2 Plastic Film for Calibration. 3.1.3 Ferrous and Non-Ferrous Standard Faces for Calibration. Those which can be used in calibrating to the zero point after polished with abrasive paper No. 80
9、0. 4 Procedures 4.1 Conditions. 4.1.1 Test Conditions. Deviations from the requirements of this standard shall have been agreed upon. Such requirements shall be specified on component drawings, test certificates, reports, etc. 4.2 Instructions. 4.2.1 Calibration of the Elcometer. 4.2.1.1 Selection o
10、f the Probe. 4.2.1.1.1 In case of ferrous base: A ferrous type probe and ferrous standard face. 4.2.1.1.2 In case of non-ferrous base (cadmium, copper, bronze, zinc, aluminum, chrome, cast iron and lead): A non-ferrous type probe and non-ferrous standard face (aluminum). 4.2.1.2 Mount the probe on t
11、he regulator/indicator of the Elcometer and turn on the power by pressing the on/BAT switch. Press the on/BAT switch once more so that the electric energy is recorded in the indication pane. 4.2.1.2.1 In case of an electric energy of not less than 100: Useable. 4.2.1.2.2 In case of an electric energ
12、y of not more than 100: Replace the all dry batteries. 4.2.1.3 Identify the operation by making the probe contact with the standard face. 3.1.2 Calibration 7 F(3D% E:4 -I* 3.1.3 759D 9I7 = / /x= . 7$*: -Gl 800-8p) E+8x +!x)1 7$*F7 759D .(9I78p) 17 . 4 4G 9.8 2T9I . 4.2.1.1.1 2: (Base Material)4 =8 7
13、 : = ?U9I7 . -C = E:4+ 4.2.1.1.2 2: (Base Material)4 /x=8 7 : /x= ?U9I7 . -C /x= E:4+ 4.2.1.2 Elcometer 8 99.* 9*F G ON/BATT S/W * #) 9888x T$ . ON/BATT S/W * $4 F- #) :0+ 98)Y(8 :4 =q7 E4%P$ . 4.2.1.2.1 98)Y(8 100 818 7 : 17 4# . 4.2.1.2.2 98)Y(8 100 8F8 7 : 98: (Battery)* +% =F$ . 4.2.1.3 . (Probe
14、)* E:4+7 9E=4P 8%8T,h* G8F$ . GM KOREA ENGINEERING STANDARDS EDS-T-7782 Copyright 2011 General Motors Company All Rights Reserved September 2011 Page 3 of 4 Version : 4 4.2.1.4 Put a plastic film, which is the maximum value (ferrous metal: 1000 , non-ferrous metal: 500 ), on the standard face and me
15、asure the value. 4.2.1.5 Press the CAL switch, and record the thickness of the used plastic film and input it by pressing ENTER. 4.2.1.6 Remove the plastic film and then make the probe contact with the standard face. Calibrate to the zero point by pressing the zero switch. 4.2.1.7 During the operati
16、on and record of 4.2.1.5 and 4.2.1.6, the probe shall be contact with the standard face. 4.2.1.8 If the surface of the test piece to be tested is not smooth, the following shall be added. 4.2.1.8.1 Perform the test methods from 4.2.1.3 to 4.2.1.5. Here, repeat the procedure of 4.2.1.4 at 10 ) 20 cyc
17、les and calculate the mean value. 4.2.1.8.2 After removing the plastic film, put a film around the minimum value (25 ) on the standard face. Make the probe contact with the face 10 ) 20 times and calculate the mean value. 4.2.1.8.3 With the zero CAL switch pressed and the probe contacted, record the
18、 mean thickness of the used film and input it by pressing ENTER. 4.2.1.8.4 Calibrate to the zero point by repeating the test methods from 4.2.1.8.1 to 4.2.1.8.3 once. 4.2.2 Attach the bottom face of the probe to the surface of the test piece completely and measure the value. 5 Data 5.1 Evaluations.
19、Over the whole surface of the test piece measure the thickness and record the mean value. However, portions within 8 mm from the inside hole, curve and edge shall be excluded from measuring. 6 Safety This standard may involve hazardous materials, operations, and equipment. This standard does not pro
20、pose 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 determine the applicability of regulatory limitations prior to use. 7 Notes 7.1 Glossary. Not applicable. 7.2 Acronyms, Abbr
21、eviations, and Symbols. Not applicable. 4.2.1.4 $4 ?U9I? (= -1000 , /x= -500 )7 09EF# % 8 F(3D% -I*8x E:4+7 7)X “ F(3D% -I*8 % * ?U9IF$ . 4.2.1.5 Calibration S/W * #8* % F(3D% E:4 -I*7 E4%P % * Key-In F G Enter Key * #) 8)YF$ . 4.2.1.6 F(3D% -I*8x 9PF G E:4+7 .* 9E=4A % Zero S/W * #) 759D 99IF$ . 4.
22、2.1.7 4.2.1.5 7t 4.2.1.6 8 8%-C d)47# .* E:4+7 9E=4A 1B72P 3LFF6 F$ . 4.2.1.8 ?U9IF8 F# 4G D8 E+8 ? (Rough) 7 $88 09I8x 4F$ . 4.2.1.8.1 4.2.1.3 4.2.1.58 4G -8x :FF$ . 8& 4.2.1.48 4G 8x 1020G -L.) 3LFF7 0?8 DF8x F$ . 4.2.1.8.2 F(3D% -I*8x 9PF % 2F7 01F -I* (25 )8x $4 E:4+7 7)X “ .* 10 20G 9E=F7 DF8x
23、F$ . 4.2.1.8.3 Zero Calibration S/W* #8* .4 9E=%P 1B72P 17F F(3D% -I*8 D % * d)F Enter-Key* #) 8)YF$ . 4.2.1.8.4 4.2.1.8.1 4.2.1.8.38 4G 8x 1G -L.)F7 759D8x .(9IF$ . 4.2.2 4G D8 E+7 .8 F$+8 7x98H -4=%L$) .8 G , F8x ?U9IF$ . 5 4G $8Bd 5.1 D4 . 4G D 98 E+7 % * ?U9IF G DF8x d) .(4F$ . $ , !.8 + (Inside
24、 Hole), D# !$ (Edge)8p).Bd 8 mm 8!# ?U9I .8872P 9P7F$ . 6 6|987 $4F 7 9 ., E:48t 88G ,p: , 86 , 8/x &%8x E FF 3L 8$ . ., E:48t 87 $4F 170 4)%P +& 6|98 ,l9P8 F8x 9P4F:# 6#$ . &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$-1F 68 . 7.2
25、 66 -C dGl . F$-1F 68 . GM KOREA ENGINEERING STANDARDS EDS-T-7782 Copyright 2011 General Motors Company All Rights Reserved September 2011 Page 4 of 4 Version : 4 8 Coding System This standard shall be referenced in other documents, drawings, etc., as follows: Test to EDS-T-7782 9 Release and Revisi
26、ons This standard was originated in December 1994. It was first approved by Engineering Standard Committee in December 1994. It was first published in December 1994. 8 Ed - $* ,l2P! $+ &%72P ., E:48 87%T &# $80 M8 EdF$ . Test to EDS-T-7782 9 9P9I -C P9I 8)Y ., E:48t 1994“x 1287 E:4 -Gl4 .7 %L6 , d3T
27、E:41,h7 8F 1994 “x 12 87 38%L6$ . ., E:48t 1994 “x 12 87 ) 9P9I / -PF%L6$ . Issue / P9I8)Y Publication Date / 38 88 Description (Organization) / 9PP9I76 (:04.2P ) 4 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 )
