Method of making flat steel files

Details Method of making flat steel files Method of making flat steel files

1975-03-05

1976-02-24

Larson, Lowell A.

Metal deforming

By use of roller or roller-like tool-element

With cutting of work or product

72364, 72365, 76 24R, 148 12B, B21B 302

Patent

active

RE0287199

ABSTRACT:
A process for making flat steel files wherein a highcarbon steel is hot rolled on a wide strip mill and coiled. The coil is given a spheroidizing anneal and slit into bar and cut into flat bar stock. File blanks are cut from the flat bar stock and ground to remove a pure iron surface caused by the anneal. Thereafter, the file teeth or grooves are cut and the file hardened.

REFERENCES:
patent: 1896199 (1933-02-01), Peiseler
patent: 2105114 (1948-12-01), Gill
patent: 3416347 (1968-12-01), Walsh et al.
patent: 3671336 (1972-06-01), Korchynsky

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