Method of producing knife for cutting hot metal

Details Method of producing knife for cutting hot metal Method of producing knife for cutting hot metal

1980-04-24

1982-06-22

Skiff, Peter K.

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

76101R, 83316, 219121ED, C21D 900, B23D 2506, B26D 156, B23K 900

Patent

active

043360831

ABSTRACT:
A knife for shearing hot metal at temperatures between about 1400.degree. F. and 2400.degree. F. and particularly between about 1800.degree. F. and 2200.degree. F. Typically, the knife is used for shearing blooms or strands produced by continuous casting into billets at like high temperatures. The knife is composite including a base of alloy tool steel, specifically AISI 4130 and a cutting edge of a high-temperature-resistant alloy, specifically INCONEL Alloy 718. These alloys are weld compatible and are joined into a mechanically sturdy unit by an electron-beam fusion weld, carried out in an evacuated atmosphere substantially free of oxygen to preclude reaction of oxygen with the alloy components such as Ti having a high affinity for oxygen.

REFERENCES:
patent: 3295401 (1967-01-01), Rackoff
patent: 3865639 (1975-02-01), Bellot et al.
patent: 3946630 (1976-03-01), Roehrig et al.
patent: 4087593 (1978-05-01), Phelps et al.

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