Method of manufacturing a gas injection element

Details Method of manufacturing a gas injection element Method of manufacturing a gas injection element

1992-08-05

1994-01-18

Cuda, Irene

Metal working

Method of mechanical manufacture

Burner, torch or metallurgical lance making

29890142, B23P 1500

Patent

active

052790320

ABSTRACT:
A method for producing a weak resistance injection element for introducing ases into molten metals.
The injection element includes an assembly of at least two high density refractory components. At least the upper high density refractory component is made by isostatic pressing of ceramic powders followed by a double heat treating process which are selected according to the liquid metal to be melted/refined in the metallurgical vessel where the injection element is going to operate.

REFERENCES:
patent: 1634274 (1927-07-01), Smith
patent: 1646602 (1927-10-01), Smith
patent: 3394445 (1968-07-01), Valyi
patent: 3477112 (1969-11-01), Yerkins
patent: 4754954 (1988-07-01), Navano et al.
patent: 4768267 (1988-09-01), Burbach et al.
patent: 4843692 (1989-07-01), Hemmat

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