Plastic and nonmetallic article shaping or treating: processes – Direct application of electrical or wave energy to work – Extrusion molding
Patent
1997-12-12
1999-08-17
Tentoni, Leo B.
Plastic and nonmetallic article shaping or treating: processes
Direct application of electrical or wave energy to work
Extrusion molding
264 291, 264 297, 264 401, 264 406, 264 407, 26421111, 425135, 425144, 4251748R, 4253781, B29C 3514
Patent
active
059390123
ABSTRACT:
A carbonaceous article is made by baking paste under continuously applied high pressure. The paste is extruded as it is baked to form the article, and the article may be further machined after baking. A force opposing extrusion is applied to the article to allow high pressures to be provided to the paste. The location of the baking zone both longitudinally and peripherally is carefully controlled to preclude over or under baking. Longitudinal control of the baking zone is effected by measuring the force required to extrude baked paste, and peripheral control is effected by measuring the extent of the baking at several peripheral locations and controlling the baking current at these locations. The article may be an electrode for supply to an electric arc furnace immediately after baking or to a furnace remote from the baking station. The article may also be converted to graphite by heating the article to a graphitizing temperature, and the additional heat may be provided by electric resistance heating or by induction heating.
REFERENCES:
patent: 1442031 (1923-01-01), Soderberg
patent: 1836880 (1931-12-01), Sem
patent: 2159183 (1939-05-01), Sem
patent: 2224739 (1940-12-01), Manfredini
patent: 2680141 (1954-06-01), Waddington et al.
patent: 3254143 (1966-05-01), Heitman
patent: 3280231 (1966-10-01), Bentolila et al.
patent: 3284372 (1966-11-01), Bailey
patent: 3524004 (1970-08-01), Nostran et al.
patent: 3783170 (1974-01-01), Kolano
patent: 3819841 (1974-06-01), Persson
patent: 4396482 (1983-08-01), Das et al.
patent: 4514371 (1985-04-01), Jamet et al.
patent: 4517139 (1985-05-01), Rawlings et al.
patent: 4527329 (1985-07-01), Bruff et al.
patent: 4575856 (1986-03-01), Persson
patent: 4576004 (1986-03-01), Bach
patent: 4597839 (1986-07-01), Josefowicz
patent: 4612151 (1986-09-01), Bruff et al.
patent: 4701316 (1987-10-01), Lester et al.
patent: 4756004 (1988-07-01), Stanley et al.
patent: 4756813 (1988-07-01), Stanley
patent: 4921222 (1990-05-01), Mott
patent: 4942002 (1990-07-01), Feist
patent: 5110359 (1992-05-01), Orac et al.
Globe Metallurgical Inc.
Tentoni Leo B.
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