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2、90:2000 Dental gypsum-bonded casting investments (C ). C (IDT). 74902004 . 6 ISO 7490-2011 III ( ) . , . . C, 2013 , . ISO 74902011 1 Dental gypsum-bonded casting investments. General specifications 2013-01-01 1 ( ) - , , , , . 2 : ISO 3696:1987 Water for analytical laboratory use Specification and
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4、20 % , . ( ) , . 5.6 7.6 1 2,3 , 2 2,6 . 5.7 - . 5.4, 5.5, 5.6. 5.8 - . . ISO 74902011 4 6 6.1 , , . . 5 . , , . , , . , , . 6.2 7.17.6 (232) (505) %. , (232) (5010) %. , , , . (232) 15 . 6.3 ( ), , , ISO 3696. 6.3.1 , . . . . ISO 74902011 56.3.2 1 % , . , . 10 , . . . , , . . 7 7.1 7.1.1 5.1 . 7.2
5、7.2.1 , (50,01) , (35,01) , - . , , 150 . 50 60 . 1 , . , . . 7.2.2 , . . ISO 74902011 6 (2000,1) , 6.3. . , 20 , . (1202) 10 / . 1 . . 7.2.3 . , 5.2, . 5.2, . , . 5.2, ; . 7.3 7.3.1 . 7.3.2 , 1. ISO 74902011 7 1 : F 50 , (10,05) ; 270 10 ; , (3001) ; ; D; ; I 100x100 ; J , , - , 70 , 60 , 40 . . . ISO 74902011 8 7.3.3 300 , , , 6.3. , , , ( , ) 1 2 . 15 , . , , 5 . , 1 , , 2 . 7.3.4 7.3.3 . 5.3, . 5.3, ,
