GOST R ISO 7438-2013 Mettallic materials Bend test《金属材料 弯曲试验》.pdf

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1、 7438 2013 ISO 7438:2005 Metallic materials. Bend test method (IDT) 74382013 II 1 . . 4 . 2 22 2013 . 2052- 3 7438:2005 . (ISO 7438:2005 Metallic materials Bend test) 4 1.02012 ( 8). ( 1 ) , . () . , (gost.ru) , 2014 , 74382013 1 Mettallic materials Bend test 20141001 1 . , . , , , . 2 , , 1 1 2. 1

2、 . a ( ) b L L D r f c , , p , , , , 3 , , , - , . , . 180 -, . 74382013 2 4 4.1 , : ) ( 1); b) V- ( 2); ) ( 3). 1 2 1 2 3 4.2 4.2.1 , . . ( 1). 4.2.2 , l l= ( D + 3a) 2a(1) . 74382013 3 4.3 V- 180- ( 2). . V- , 1 10 , . 4.4 , . ( 3). , , , 3. 5 5.1 , , . , , . , . 5.2 , : 3 50 ; 1,5 50 , 10 ; 1 10

3、 . , , , . . 5.3 , : ) , 20 ; b) 20 : - (205) 3 ; - 20 50 3 . 5.4 5.4.1 , , , . 25 , 25 . . 5.4.2 , , 30 . 30 , 50 , 25 . 50 , 25 ( 4). . 74382013 4 4 5.5 , , , . 5.6 , 5.3 5.4. 5.7 . 6 ! . 6.1 , 10 35 . (235). 6.2 , : ) ( 1, 2 3); b) ( 6); ) ( 7). 5 6 74382013 5 7 6.3 ( 1) V- ( 2) , . , . 1, 2 3 ,

4、 (10,2) /. , ( 5). , , 5, ( 6) . . . (4.4). 6.4 ( 7), . 7 7.1 . , , . 7.2 , , . , . 8 : a) ; b) ( , , .); c) ; d) ; e) ; f) . 74382013 6 () . . f . , 1, : 22)()(2sincfpcfWcp(A.1) 22)()(2coscfpcfccW, (A.2) : 222)( ccfpW (A.3) 225Dc (.4) .1 74382013 669.01:620.174:006.354 77.040.10 : , 01.08.2014. 60x841/8. . . . 1,40. 60 . . 2948. , 123995 , ., 4. www.gostinfo.ru infogostinfo.ru

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