Method for treating large cast iron dies, particularly for vehic

Details Method for treating large cast iron dies, particularly for vehic Method for treating large cast iron dies, particularly for vehic

1987-12-21

1990-02-06

Walberg, Teresa J.

Electric heating

Metal heating

Of cylinders

219 1043, 219 1057, 219 1061R, 219 1075, 148141, H05B 664

Patent

active

048990248

ABSTRACT:
A method for preparing 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 stoppages due to seizure; its main characteristic consists of subjecting to induction hardening treatment those die regions most subject to operational wear.

REFERENCES:
patent: 4599502 (1986-07-01), Khare
patent: 4652724 (1987-03-01), Morita

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