1、 KSKSKSKS KSKSKSK KSKSKS KSKSK KSKS KSK KS KS D 0291 KS D 0291:2009 2009 12 17 http:/www.kats.go.krKS D 0291:2009 : ( ) ( ) () POSCO () () () () () KIST () ( ) : (http:/www.standard.go.kr) ： ： 2009 12 17 2009-0836 ： ： ( 02-509-7274) (http:/www.kats.go.kr). 10 5 , . KS D 0291:2009 Standard guide for
2、test method of cavitation erosion resistance of stainless steels 1 1.1 , (cavities) (bubbles) (erosion) . 1.2 . , . 1.3 , , , , . 2 , . 2.1 (cavitation) . 2.2 (cavitation erosion) . 2.3 (cumulative erosion) . , , (mean depth of erosion) . 2.3.1 (cumulative erosion rate) (erosion rate) - (cumulative
3、erosion-time curve)KS D 0291:2009 2 . 2.3.2 (cumulative erosion time curve) . 2.4 - (erosion rate- time curve) . 2.5 (mean depth of erosion：MDE) , . MDE( m)W/10 A W ：(mg) ：(g/cm 3 ) A ：(cm 2 ) 2.6 (cavitation erosion resistance) Rc , 1 m . Rc(h/ m)10 At / W t ： (h) W ：(mg) ：(g/cm 3 ) A ：(cm 2 ) 3 3.
4、1 . , , (dynamometer), , , , . 3.2 . 3.3 . . . . 4 4.1 KS D 0291:2009 3 . (magnetostrictive) (transducer) . 2501 000 W . 4.1.1 1 . 1 4.2 (horn) . . 4.3 (shank) . . 4.4 . 4.5 4.5.1 (200.5) kHz . 4.5.2 - . 4.6 4.6.1 . 4.6.2 . KS D 0291:2009 4 4.7 4.7.1 2 L ( ), . 4.7.2 150 mm . 4.8 , . 5 5.1 (150.05)
5、mm, (H) 6 mm 10 mm . 5.2 600 . , . 5.3 ( 2 ). . 2 5.4 . 3 mm . 5.5 . . 6 6.1 6.1.1 . 6.1.2 ( ). 6.1.3 CF3M(KS D 4103：SSC 16A) Grade 5A(ASTM A 890) . 20 mm 14 mm 8 mm 15 mm 9 mm KS D 0291:2009 5 6.1.4 3 , 4 . 3 CF3M Grade 5A 4 CF3M Grade 5A 7 7.1 7.1.1 3.5 wt.% NaCl . 7.1.2 100 mm . (mg) (h) (Rc), h/
6、 m 0h 1h 2h 3h 4h 5h 6h 7h 8h 9h 10h 80 70 60 50 40 30 20 10 0 CF3M Grade 5AKS D 0291:2009 6 7.1.3 (124) mm . 7.1.4 5 % . 7.1.5 (252) . 7.1.6 6 % . . 7.1.7 40 m . 20 m . 7.2 7.2.1 . . 7.2.2 . 7.2.3 . , 60 , 60 . 8 8.1 . 8.2 0.1 mg . 8.3 . 8.4 . 8.5 . . 8.6 . 2 . . 8.7 10 . . 8.8 812 , . 8.9 5 1 3 .
7、. KS D 0291:2009 7 5 - (A： , tan B： , tan C： , D： ) 9 9.1 2 . . 9.2 (MDE) (Rc) . . 9.3 - (MDE) . . . 100 m 50 m . 9.4 5 . 9.4.1 (maximum rate of erosion) m/h - . 9.4.2 (nominal incubation time) (maximum rate line) ( ) KS D 0291:2009 8 . 9.4.3 (terminal erosion rate) , . 9.5 . (normalized incubation
8、resistance) . KS D 0291:2009 9 1 ASTM A 351, Standard Specification for Castings, Austenitic, for Pressure-Containing Part 2 Standard Specification for Castings, Iron-Chromium-Nickel- Molybdenum Corrosion-Resistant, Duplex(Austenitic/Ferritic) for General Application 3 W.T.Fu, Y.B.Yang, T.F.Jing, Y.
9、Z.Zheng, and M.Yao, Journal of Materials Engineering and Performance, 7(1998) 801 4 C.T.Kwok, H.C.Man, F.T.Cheng, Mater. Sci. & Eng. A. 242(1998) 108 153787 1 92 3(13) (02)26240114 (02)262401489 http:/ KS D 0291 :2009 KSKSKS SKSKS KSKS SKS KS SKS KSKS SKSKS KSKSKS Standard guide for test method of cavitation erosion resistance of stainless steels ICS 77.060 Korean Agency for Technology and Standards http:/www.kats.go.kr
