Title:
METHOD FOR PRODUCING ALUMINUM MATERIAL
Document Type and Number:
Japanese Patent JP2013064182
Kind Code:
A
Abstract:
To provide a method for producing (refining) an aluminum material in which the impurity content level is much more suppressed.
The method for producing the aluminum material comprises a zone-melting step of forming a molten part where a part of aluminum is melted and moving the molten part so as to remove impurities. The zone-melting step is repeated n times, and n satisfies the formula (1): 0.5×exp((y-x)/0.57/x)+3≥n≥0.5×exp((y-x)/0.57/x)-1, wherein y is the target value of the residual resistance ratio corrected of the size effect of the high-purity aluminum material to be obtained; and x is the value of residual resistance ratio corrected of the size effect of the aluminum material prior to the zone-melting step.
Inventors:
HOSHIKAWA KOSUKE
TABUCHI HIROSHI
RIKI TSUNETAKA
NAKAMURA KAKUYOSHI
WATANABE MASAHIKO
TABUCHI HIROSHI
RIKI TSUNETAKA
NAKAMURA KAKUYOSHI
WATANABE MASAHIKO
Application Number:
JP2011203560A
Publication Date:
April 11, 2013
Filing Date:
September 16, 2011
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO
International Classes:
C22B9/16; C22B21/06; C22C21/00
Domestic Patent References:
| JPS62143892A | 1987-06-27 | |||
| JPH0432526A | 1992-02-04 |
Other References:
JPN6015017916; 橋本英二 他１名: 'ＩＴと高純度金属 高純度金属の残留抵抗と純度評価' 金属 Ｖｏｌ．７２ Ｎｏ．８, 20020801, Ｐａｇｅ．７６４-７６９
Attorney, Agent or Firm:
Samejima Mutsumi
Kyousei Tamura
Keiichi
Norihito Yamao
Kyousei Tamura
Keiichi
Norihito Yamao
Previous Patent: ALUMINUM MATERIAL AND METHOD FOR PRODUCING THE SAME
Next Patent: HEAT TREATMENT METHOD FOR PIPING
Next Patent: HEAT TREATMENT METHOD FOR PIPING