Method for processing large cast iron dies, particularly for veh

Details Method for processing large cast iron dies, particularly for veh Method for processing large cast iron dies, particularly for veh

1987-12-21

1989-02-28

Albritton, C. L.

Electric heating

Metal heating

By arc

148903, 21912185, B23K 2608

Patent

active

048087912

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 down-times 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-Phosphorus CO.sub.2 Laser, IEE Journal of Quantum Electronics, Feb. 1974, vol. QE-10, pp. 179-185.
Zaiguang Li et al, Laser Surface Treatment of High-Phosphorus Cast Iron, Journal of Applied Physics, vol. 58, Nov. 15, 1985, pp. 3860-3864.

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