1、 544872011 27 2002 . 184- , 1.02004 . 1 - ( )2 132 3 9 2011 . 521-4 , - . () . - , , 2012 , - - II 5448720111 .12 13 24 25 26 .37 48 .49 .410 .411 5 () 6 7III 544872011 . - - . . -, , , - . , , , , . , - , . - - . 1, 2. - - , , .IV 544872011 Non-destructive testing. Evaluation of gas porosity in alu
2、minium casting alloys by ultrasound.General requirements 201212011 - - , ( ) - . - , . - , .2 : 12.1.00189 . . 12.1.00491 . . 12.1.00588 . - 12.1.0192009 . . 12.1.03882 . . 12.2.00391 . . 12.2.01391 . . 12.3.00275 . . 3274 . 158393 . 276884 . 278973 . 625975 . . 1729978 . 1 544872011 2626690 . . - -
3、 - , 1 , , . (), - () . , , , , .3 3.1 .fmin -, ;fmax -, ;N fi , ;i =1,2NAi fi;Kj(i) , j(i)=AAic4311.j =1,253.2 . ; ; ; .4 4.1 - .4.2 , - - 1 5 1583 -1.4.3 - - 26266.4.4 (-) , ( 0,6 ) 24 .4.5 , - .5 5.1 , , , - - .2 5448720115.2 12.1.001, 12.2.003, 12.3.002 - 12.1.019 12.1.038.5.3 , .5.4 - 12.1.005.
4、5.5 12.1.004.6 6.1 , , - ( ), - .6.2 - , .6.3 , 1583 1 5.6.4 - - .6.4.1 .6.4.2 .6.5 , - fmim fmax. .6.5.1 fmin, fmax, - . fmin 0,51,25 , fmax 1015 .6.5.2 N 5. fminfmax , :f1= fmin, (1)f2=2f1, (2)f3=2f2, (3)f4=2f3, (4)f5=2f4= fmax. (5) N , - .6.7 6.7.1 12.2.013.0.6.7.2 17299 2768.6.7.3 , - (, 6259,6,10,18,- 32), .3 5448720117 7.1 - .7.2 , - .7.3 - fmin.7.4 fmax.7.5 0 C 80 C.7.6 , , -.7.7 Ra1,6 2789.7.8 .8 8.1 .8.2 .8.3 7.67.8.8.4 - .8.5 .8.6 , , .8.7 , - (, ).9 9.1 f1, f1 .9.2 , - ,0,50,7 - . 1.9.3 , Ai fi .10 10.1 Kj(i), 1.4 544872011 .10.2 , 9.29.3, Kj(i).10.3 Kj(i) ( 2).10.4 Kj(i) , -
