Metal treatment – Process of modifying or maintaining internal physical... – Producing or treating layered – bonded – welded – or...
Patent
1991-01-29
1992-07-28
Dean, R.
Metal treatment
Process of modifying or maintaining internal physical...
Producing or treating layered, bonded, welded, or...
148426, 148325, 148327, 148333, 148334, 148522, 219 77, 219 8522, 22826213, 228182, 228231, 30134, 30142, 30143, C21D 918
Patent
active
051338122
ABSTRACT:
A completely corrosion resistant, high strength cutting tool such as an orthodontic wire cutter includes a stainless steel body having a pair of corrosion resistant alloy steel bonding tips brazed thereto. The tips are brazed to the body using a nickel alloy brazing foil at a brazing temperature of approximately 1900 degrees F. After a rough grinding to appropriate shape, the entire tool is heat treated in a process that heats the tool to an austenitizing temperature for the cutting tips that is about 2050 degrees F. and substantially above the brazing temperature to achieve a tip hardness of 62-67 Rc. Thereafter finish grinding, buffing, polishing and honing of the cutting edges completes the manufacture of the cutting tool.
REFERENCES:
patent: 3167423 (1965-01-01), Johnson, Jr.
patent: 4148973 (1979-04-01), Sexton et al.
patent: 4150978 (1979-04-01), Schlatter et al.
patent: 4745037 (1988-05-01), DeCristofaro et al.
N. DeCristofaro and C. Henschel, "Metglas Brazing Foil", Welding Journal, Jul. 1978 pp. 33-38.
Data Sheet, Lescalloy BG42 vim-var High Performance Bearing Steel (1987).
Process Certificate for Job No. 10713A (Sep. 12, 1990).
Cera Jonel
Kelly John S.
Dean R.
E.T.M. Corporation
Ip Sikyin
Minnesota Mining and Manufacturing Company
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