1、 ENGINEERING STANDARDS Test Procedure SUPERCEDED EDS-T-7178 Method of Tension Shear and Tension Test for Spot Welded Joint This standard may be applied only for current projects. It is Superceded for all future projects and replaced by GMW14057. 9D 79E 888 88 98$ -C 88 4G - Note: 8 E:48t G8 =97 FF7
2、957%L+ , FG P-P Program .Bd# GMW14057 ) $4=F7 957F$ . Copyright 2011 General Motors Company All Rights Reserved July 2011 Originating Department: GM Korea Engineering Standards Page 1 of 8 Version : 3 1 Scope Note: Nothing in this standard supersedes applicable laws and regulations. Note: In the eve
3、nt of conflict between the Korean and English language, the Korean language shall take precedence. 1.1 Purpose. The purpose of this standard is to specify tension shear and tension test procedure on spot welded joints of metal materials used for motor vehicles. 1.2 Applicability. This standard provi
4、des specifications on spot weld joints of low carbon steel, low alloy steel and stainless steel materials with panel thickness of 0.4mm 5.0mm. Here, hardening agent, surface treatment agent, clad material and combination of different materials, whose tension strength of welded area is 25% or less of
5、 tension shear strength, are excluded. 2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/Specifications. KS B 0850 KS B 0851 KS B 0852 KS B 0854 2.2 GM Standards/Specifications. EDS-T-7179 GMW3335 2.3 Additional References. None 3
6、 Resources 3.1 Test Piece. The test piece shall conform to the each test method in paragraph 4. 1 P7 :0 : ., E:48 68 DD % 4 88t 8x d:48p) F$ . $ , 4G D8 DD % 4 E 3 72P DD % 188 :E87 *# 77# 88t ;8 DD % 7 -HE+8 DG$* .F7 E 2 7t M8 F$ . Table 2: Welding Area Grading / E 2: 79E.8 &%= Welding Area Grade /
7、 79E.8 &%= Mechanical Properties & Flatness / d95 2e: -C DG$ Grade A / A = Welding area which requires special strength level. / CH I$* Fx7) F# 79E. . Grade B / B = Welding area requiring some strength. / I$* Fx7) F# 79E. . Grade AF / AF = Welding area of Grade A and requiring flat surface. / A =8 E
8、:8x 4:+ , E+8 DGF6 F# 79E. . Grade BF / BF = Welding area of Grade B and requiring flat surface. / B =8 E:8x 4:+ , E+8 DGF6 F# 79E. . GM KOREA ENGINEERING STANDARDS EDS-T-7178 Copyright 2011 General Motors Company All Rights Reserved July 2011 Page 5 of 8 Version : 3 Table 3: Tension Shear Load (kgf
9、 N) E 3: 88 98$ F:E (kgf N) Panel Thickness / DD % (mm) Material Tension Strength 28 38 kgf/mm2 275 373 N/ mm2 / +8 88I$ 28 38 kgf/mm2 275 373 N/ mm2 Grade A, Grade AF / A = , AF = Grade B, Grade BF / B = , BF = Min. / 2? Average / D? Min. / 2? Average / D? 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.2 1.4 1.5 1.
10、6 1.8 2.0 2.3 2.5 2.6 2.8 3.0 3.2 3.6 3.8 4.0 4.5 5.0 105 1030 150 1471 195 1912 250 2452 305 2991 365 3579 425 4168 560 5492 705 6914 780 7649 860 8434 1030 10101 1200 11768 1480 14514 1680 16475 1780 17456 1990 19515 2210 21673 2430 23830 2900 28439 3150 30891 3400 33343 4060 39815 4750 45682 125
11、1226 175 1716 230 2256 295 2893 360 3530 425 4168 500 4903 655 6423 830 8140 920 9022 1010 9905 1210 11866 1410 13827 1740 17064 1980 19417 2100 20594 2340 22948 2600 25497 2860 28047 3410 33441 3700 36285 4000 39227 4770 46778 5590 54819 95 932 135 1324 180 1765 225 2206 275 2697 325 3187 380 3727
12、505 4752 635 6227 705 6914 775 7600 925 9071 1080 10591 1330 13043 1510 14808 1600 15691 1790 17554 1990 19515 2190 21477 2610 25595 2830 27753 3060 30008 3650 35794 4280 41972 115 1128 160 1569 210 2059 265 2600 320 3138 385 3776 450 4413 590 5786 745 7306 825 8090 910 8924 1090 10689 1270 12454 15
13、70 15396 1780 17456 1890 18535 2110 20692 2340 22948 2570 25203 3070 30106 3330 32656 3600 35304 4300 42169 5030 49327 Note: In case a materials min tension strength falls in 38 60 kgf/mm2 373 588 N/ mm2, multiply pertinent materials Tension Strength Minimum u 8/300 to the value of Table 3. If the m
14、in tension strength exceeds 60 kgf/mm2 588 N/mm2, set the minimum as 60 kgf/mm2 588 N/mm2 and multiply 1.6 to values of Table 3. /x : 558 +88 88I$8 2?4 38 60 kgf/mm2 373 588 N/mm28 77# 558 +88 88I$8 2? 8/3008x E 3 8 F7 %F$ . 60 kgf/mm2 588 N/mm2* “L# 7 $4F7 # 60 kgf/mm2 588 N/mm2) F , E 3 8 F7 1.68x
15、 %F$ . 4.2.2 Tension Test. 4.2.2.1 Test Sample. Test sample shall be of cross shape and its shape and dimensions shall be as in Figure 4. 4.2.2 88 4G . 4.2.2.1 4G D . 4G D8t 4!8GI 88 4G D8p) F+ , +6 -C ?3L# ,* 4 7t M$ . GM KOREA ENGINEERING STANDARDS EDS-T-7178 Copyright 2011 General Motors Company
16、All Rights Reserved July 2011 Page 6 of 8 Version : 3 Figure 4: Cross-shaped Tension Test Sample: Shape & Dimensions (mm) / ,* 4: 4!8GI 88 4G D8 +6 -C ?3L (mm) 4.2.2.1.1 Test Sample Quantity. Test sample quantity shall be 5 with minimum 3 to be tested. 4.2.2.1.2 Material. Material used for test samp
17、le shall have the same material type, panel thickness, heat treatment and surface condition as that used in actual work. 4.2.2.1.3 Welding Facility. Welding equipment such as power supply and welder for manufacture of test sample shall be the same used in actual work. Also, the electric tip shall be
18、 the same as that used in actual work. 4.2.2.2 Test Procedure. Test shall be done by tight attaching the test sample to the jig of Figure 5 and applying load to the direction as indicated in the figure in accordance with GMW3335 (Metallic Sheet, Mechanical Properties Testing), where max load is meas
19、ured. Tolerance of tension tester load shall be 3%. 4.2.2.1.1 4G D 3L( . 4G D8 3L(8t 5 P* d:48p) F+ , 2F 3P 818 4G D7 $4F7 44F$ . 4.2.2.1.2 8* . 4G D7 17F# 8*# 8: , DD % , 7(=* , E+1B &%7 $4F7 49P 867 17%L# 866 F$ . 4.2.2.1.3 79E 2X/x . 4G D8x 9P8Fd 88F 9882X/x , 79Ed &%8 79E2X/x# 49P 867 17%L# 866
20、F+ , DF 98-D5$ 49P 867 17%L# 0 % &%F 866 F$ . 4.2.2.2 4G - . 4G 8t ,* 5 7 E4F# :,7 4G D8x 97 .8 , GMW3335 (Metallic Sheet, Mechanical Properties Testing)7 :4F7 ,*7 E4F# -F8p) F:E8x 4F7 4G F+ , $4F:E8x ?U9IF$ . $ , 884G d8 F:E7 $4F F77X=# 3% -88 !4 9$ . GM KOREA ENGINEERING STANDARDS EDS-T-7178 Copyr
21、ight 2011 General Motors Company All Rights Reserved July 2011 Page 7 of 8 Version : 3 Figure 5: Cross-shaped Tension Test Jig / ,* 5. 4!8GI 884G :, 4.2.2.3 Test Results Assessment Criteria. Tension test results are used for design stress computation and for setting standard welding conditions and t
22、here are no assessment criteria applicable here. However, assessment criteria may be set up for test comparison. 5 Data 5.1 Data Processing Method. Maximum load values are measured and entered in integers. 6 Safety This standard may involve hazardous materials, operations, and equipment. This standa
23、rd 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 determine the applicability of regulatory limitations prior to use. 7 Notes 7.1 Glossary. Not applicable. 7.2
24、 Acronyms, Abbreviations, and Symbols. Not applicable. 4.2.2.3 4G 0 DD9I d:4 . 88 F:E7 $4F 4G 0?# 2X8 )Y 1 -C 79E9 2X9I8x 88F $8Bd) 17F+ , DD9I d:48t 6$ . $ , /x 4G 47# DD9I d:48x 88p) 2X9IF 3L 8$ . 5 4G $8Bd 5.1 $8Bd =* - . $4F:E8x ?U9IF+ , 9I3L) d8F$ . 6 6|987 $4F 7 9 ., E:48t 88G ,p: , 86 , 8/x &
25、%8x E FF 3L 8$ . ., 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$-1F 68 . 7.2 66 -C dGl . F$-1F 68 . GM KOREA ENGINEERING STANDARDS EDS-T-7178 Copyright 2011 General Motors Compa
26、ny All Rights Reserved July 2011 Page 8 of 8 Version : 3 8 Coding System This standard shall be referenced in other documents, drawings, etc., as follows: Test to EDS-T-7178 9 Release and Revisions This standard was originated in August 1999. It was first approved by Engineering Standard Committee i
27、n August 1999. It was first published in August 1999. 8 Ed - $* ,l2P! $+ &%72P ., E:48 87%T &# $80 M8 EdF$ . Test to EDS-T-7178 9 9P9I -C P9I 8)Y ., E:48t 1999“x 887 E:4 -Gl4 .7 %L6 , d3TE:41,h7 8F 1999“x 887 38%L6$ . ., E:48t 1999“x 887 ) 9P9I / -PF%L6$ . Issue / P9I8)Y Publication Date / 38 88 Description (Organization) / 9PP9I76 (:04.2P ) 3 JUL 2011 Apply new Engineering Standard Template. Superceded (Corrosion / Metallurgical Material Lab Team) / 4 d3TE:4 64 957 . F9I957 =* (28*4G D4 )
