1、 ENGINEERING STANDARDS Test Procedure LIMITED USE EDS-T-7706 Test Method for Determining 4-Ball Test Welding Force and Welding Wear Do Not Use on New Program; No Replacement. 2Q8T9PE8 !F:E2e 4G - Note: 8 E:48t G8 =97 FF7 957%L+ , FG P-P Program 72P# 957%L: 6#$ . Copyright 2011 General Motors Company
2、 All Rights Reserved November 2011 Originating Department: GM Korea Engineering Standards Page 1 of 6 Version : 5 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 take
3、precedence. 1.1 Purpose. This standard specified the measurement method of the load-carrying properties of lubricating oil and grease, etc. 1.2 Applicability. This standard shall apply to the test for load-carrying properties of engine oil, transmission oil, gear oil and greases through the lubricat
4、ing function of each. 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 Extreme Pressure , 8*: .(F$) F$ .
5、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 . Load Wear Index: 957%P F:E72P 8XG8T4 *+* 2G F 3L 8# #)Y8 :3L)2P ., 4G
6、72P# 0.1 Logarithm 8 88p) F:E8x :44A+ 9I%P 3P8 Ball 7 Weld Point :98: 10- F:E8x 4F$ . Load Wer Index# Weld :98: 4F: 10 -8 F:E7 8F7 9I%L# Corrected Load* FF7 , DF8p) 9I%P$ . Weld Point: G98 4 9I: 7 8i=%T & 4F: 28 F:E8p)2P Lubricant 4 4: -62e8x -.)F# Kg.f $888 H . GM KOREA ENGINEERING STANDARDS EDS-T-
7、7706 Copyright 2011 General Motors Company All Rights Reserved November 2011 Page 6 of 6 Version : 5 Corrected Load: The load in K.g.f obtained by multiplying the applied load by the ratio of the Hertz scar diameter to the measured scar diameter at that load. Hertz Scar Diameter: The average diamete
8、r (mm) of an indentation caused by the rotating ball on the stationary ball, which is not burnt and stuck or welded when tested under constant load. 7.2 Acronyms, Abbreviations, and Symbols. Not applicable. 8 Coding System This standard shall be referenced in other documents, drawings, etc., as foll
9、ows: Test to EDS-T-7706 9 Release and Revisions This standard was originated in July 1993. It was first approved by Engineering Standard Committee in July 1993. It was first published in July 1993. Corrected Load: 5 F:E8 4G 72P 66:# Kg.f $888 F:E8p)2P 957%P F:E72P G98 7 8F -P2%L# 9I 8 *+H8 :8x ?U9IF
10、7 , F0 Hertz *+H :8 /x* F7 957%P F:E7 %F7 66:# F . Hertz Scar Diameter (Hertz *+H ): mm $888 D :8p)2P , 4G 98 F:E8x 4F8x & Ball 1Gl88 Deformation 8p) 8F7 -P2F# Indentation F . 7.2 66 -C dGl . F$-1F 68 . 8 Ed - $* ,l2P! $+ &%72P ., E:48 87%T &# $80 M8 EdF$ . Test to EDS-T-7706 9 9P9I -C P9I 8)Y ., E:
11、48t 1993 “x 7 87 E:4 -Gl4 .7 %L6 , d3TE:41,h7 8F 1993“x 787 38%L6$ . ., E:48t 1993“x 787 ) 9P9I / -PF%L6$ . Issue / P9I8)Y Publication Date / 38 88 Description (Organization) / 9PP9I76 (:04.2P ) 5 NOV 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 )
