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Home Material Sciences Technology for Production of Refractory Crucibles with Fused Surface

Technology for Production of Refractory Crucibles with Fused Surface

Description

In production process, crucible formation with preset configuration and dimensions is carried out by means of vacuum and centrifugal forces from powder refractors without binders. The subsequent fusion of crucible working surface is realized by plasma arc of direct current in argon or nitrogen atmosphere.

The data below shows the basic technological parameters obtained at the production of melting crucibles from quartz sand.

Crucible diameter, m

0,120

0,120

0,130

0,218

Crucible hight, m

0,070

0,080

0,075

0,100

Wall thickness, m

0,015

0,012

0,012

0,007

Power input, kW

51,6

54,0

59,5

76,5

Process duration, h

0,058

0,058

0,062

0,17

Specific electric power consumption for the whole process constitutes 3 - 4 kWth/kg

High effectiveness and environmental friendliness of the developed technology allows to apply it at crucible production for steel and alloys, cast iron and copper alloys, semiconductors and optical glass manufacture. Using the developed melting equipment it is possible to obtain crucibles of up to 0.7 m diameter.


Plasma installation for manufacturing melting crucibles of refractory powders.
1 – desk for controlling gas supply and electric current; 2 – desk for controlling plasma generators transfer;
3 – column; 4 – plasma generators; 5 – vacuum mould with powder; 6 – mould’s electric drive.

Areas of Application

Foundry industry

Contact Details

Organization: Physico-Technological Institute of Metals and Alloys of NASU.
Address: 34/1 Vernadsky Avenue, 03680, Kiev-142, Ukraine.
Tel. (044) 444-35-15.
Fax (044) 459-50-29.
E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it

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