1、 KS D ISO 4158 KSKSKSKS SKSKSKS KSKSKS SKSKS KSKS SKS KS KS D ISO 4158 : 2002 (2007 ) 2002 10 30 http:/www.kats.go.kr . ICS 77.100 KS D ISO 4158 2002 Ferrosilicon, ferrosilicomanganese and ferrosilicochromium Determination of sillicon content Gravimetric method 1978 1 ISO 4158(Ferrosilicon, ferrosil
2、icomanganese and ferrosilicochromium Determination of sillicon content Gravimetric method) . , . 8 95 %(m/m) . . . ISO 3713 Ferroalloys Sampling and preparation of samples General rules . . , . . 40 mL , , . D ISO 4139 : 2002 2 . , . 40 mL . 75 mm . 600 mL 800 mL . ISO 3713 160 m . 50 %(m/m) , 0.50
3、0.000 2 g . 50 %(m/m) , 0.25 0.000 2 g . 25 %(m/m) , 1 g . . ( ) 10 12 g ( ) ( ) . ( ) 3 g ( ) 3 g . , 350 400 . . . 5 . . . 200 mL ( ) . . . ( ) 30 mL ( ) . , . ( ) 100 mL . . . ( ) 100 mL ( ) . . . . ( ) 30 mL . . . . . ( ) 20 mL mL . 250 mL . . ( ) 125 mm . D ISO 4139 : 2002 3 . . ( ) . ( ) . . .
4、 . 250 mL . ( ) 20 mL . , ( ) . . ( ) 2 . ( ) 4 . . 400 ( ) . . ( ) 1 mL . . 1100 . . . ( ) 10 mL ( ) 2 3 . . . 2 mL . 1100 . . %(m/m) . () () ( ) ( ) 0 4 3 2 1 0 4 3 2 1 74 46 100 4 467 0 m m m m m mm m m m = . . m 0: ( ) m 1: ( ) (g) m 2: ( ) (g) m 3: (g) m 4: (g) 0.467 4 : 95 % . 50 %(m/m) 0.30 % 50 %(m/m) 0.20 % . KS D ISO 4158 : 2002 KSKSKS SKSKS KSKS SKS KS SKS KSKS SKSKS KSKSKS Ferrosilicon, ferrosilicomanganese and ferrosilicochromium Determination of silicon content Gravimetric method ICS 77.100 Korean Agency for Technology and Standards http:/www.kats.go.kr
