To provide a solidification cracking prediction method for predicting difficulty/easiness of solidification cracking when the casting of an Al alloy made of desired alloy components is subjected to semi-continuous casting by a vertical type direct water-cooled system.
The method includes: an input step S1; a first calculation step S2 where calculation of a temperature variation ΔTii based on (formula 1) and calculation of a difference ΔR based on (formula 2) are performed, a second calculation step S3 where relation among the calculated difference ΔR, the calculated temperature variation ΔTii and the casting velocity v is calculated on the basis of (formula 3); a prediction step S4 where, in the case the relation among the calculated difference ΔR, the temperature variation ΔTii and the casting velocity v satisfies the following (formula 3), it is predicted that solidification cracking is hard to occur; and an output step S5. Formula 1: ΔTi=(TFsL-TFsH)×{(FsL-FsH)/0.2}. Formula 2: ΔR=[δT/δfs]fs=FsL-[δT/δfs]fs=FsH. Formula 3: ΔR/ΔTii<1,020×ΔTii/v2. In the formulae, δ denotes a partial differential symbol.
ABE MITSUHIRO
TOKUDA KENJI
| JP2004082150A | 2004-03-18 | |||
| JP2005062108A | 2005-03-10 | |||
| JP2001191150A | 2001-07-17 | |||
| JPH05185183A | 1993-07-27 | |||
| JP2008188640A | 2008-08-21 | |||
| JP2009262235A | 2009-11-12 | |||
| JP2004082150A | 2004-03-18 | |||
| JP2005062108A | 2005-03-10 | |||
| JP2001191150A | 2001-07-17 | |||
| JPH05185183A | 1993-07-27 | |||
| JP2008188640A | 2008-08-21 | |||
| JP2009262235A | 2009-11-12 |
Etsuo Tada
Tetsuo Tomita