Electric heating – Metal heating – By arc
Patent
1988-07-22
1989-07-25
Albritton, C. L.
Electric heating
Metal heating
By arc
2191216, 21912174, 21912185, B23K 2608
Patent
active
048516376
ABSTRACT:
A method for processing large cast iron dies for use in pressing the sheet-metal components of vehicle bodies is described; this method results in improved pressing performance, such as extended life and, in particular, drastic reduction in rejects and downtimes due to seizure; its main characteristic consists of subjecting those die regions most subject to operational wear to localized heating by a laser beam which strikes normal to the surface so as to harden the treated regions without the risk of cracking; the treatment is implemented by a focusing head controlled by a robot having five capabilities of movement.
REFERENCES:
patent: 3619550 (1971-11-01), Matthews
patent: 4093842 (1978-06-01), Scott
Edward V. Locke et al., Metal Processing with a High-Power CO.sub.2 Laser, Feb. 1974, vol. QE-10, pp. 179-185.
Zaiguang Li et al., Laser Surface Treatment of High-Phosphorus Cast Iron, vol. 58, Nov. 15, 1985, pp. 3860-3864.
Contrafatto Guido
Gay Paolo
Puozzo Luciano
Albritton C. L.
Fiat Auto S.p.A.
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