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Title:
METHOD FOR MANUFACTURING GAS INJECTION PLUG AND GAS INJECTION PLUG
Document Type and Number:
Japanese Patent JP2008231554
Kind Code:
A
Abstract:

To provide a method for manufacturing a gas injection plug by which the judgement of an end-point using a refractory for judging the end-point can be performed and the possibility of molten steel leakage through a joint part at the boundary between the refractory for judging the end-point and a plug base body, can be reduced, and to provided the gas injection plug manufactured by the above method.

The gas injection plug 11 is provided with the plug base body 2 constituted of a gas-permeable refractory and an end-point judging body 3 constituted of a refractory different in the gas-permeability or/and heat-conductivity from the plug base body 2 and is integrated without leaving the joint part at the boundary between the plug base body 2 and the end-point judging body 3.


Inventors:
Aramaki, Keizo
Kojima, Tomohiro
Kondo, Junya
Application Number:
JP2007000076707
Publication Date:
October 02, 2008
Filing Date:
March 23, 2007
Export Citation:
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Assignee:
TOKYO YOGYO CO LTD
International Classes:
C21C7/072; C21C5/48; B22D11/10
Domestic Patent References:
JPH05311262A
JP2002129224A
JPS57188100U
JPS5760744U
Attorney, Agent or Firm:
前田 勘次
大矢 正代