Title:
結晶粒微細化母合金の製造方法
Document Type and Number:
Japanese Patent JP5405115
Kind Code:
B2
Abstract:
A process is provided for producing an aluminium-titanium-boron grain refining master alloy containing titanium boride and titanium aluminide particles, the process comprising melting aluminium in a silicon carbide crucible in a medium frequency induction or an electric resistance furnace, adding to the melt at a temperature between 750 degrees Celsius and 900 degrees Celsius, KBF4 and K2TiF6 salts, pre-mixed in proportions to obtain a Ti/B ratio of 5 in the melt, gently mixing the salt mixture with the melt without introducing any stirring, transferring the molten alloy to an electric resistance furnace maintained at 800 degrees Celsius, decanting the K—Al—F salt, the by-product of the salt reaction, thoroughly stirring the molten alloy in the SiC crucible with graphite rods before finally casting the molten alloy into cylindrical molds in the form of billets and finally extruding the billet into 9.5 mm rods.
Inventors:
Biroll, jugel
Jakir, Ottoman
Jakir, Ottoman
Application Number:
JP2008538458A
Publication Date:
February 05, 2014
Filing Date:
January 23, 2006
Export Citation:
Assignee:
Tubi Tak
International Classes:
C22C1/02; B22D21/04; B22D27/20; C22C21/00
Domestic Patent References:
| JP57155334A | ||||
| JP54114411A | ||||
| JP61223156A | ||||
| JP63255338A | ||||
| JP10317083A | ||||
| JP11350052A |
Attorney, Agent or Firm:
Makoto Onda
Hironobu Onda
Atsushi Honda
Hironobu Onda
Atsushi Honda