Method of producing knife for cutting hot metal
US4336083A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 24, 1980 |
| Grant date | Jun 22, 1982 |
| Priority date | — |
| Expiry date | Apr 24, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/4751
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.