Dry roll furnace arrangement
US5833455A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 14, 1996 |
| Grant date | Nov 10, 1998 |
| Priority date | — |
| Expiry date | May 14, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49544
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A dry furnace roll design operates at a high temperature environment of a metal heating furnace by arranging weld metal joining a roll sleeve to roll bells at opposite ends in cavities formed in the sidewalls of the furnace. A dense filling of ceramic fiber material is held in each roll bell underlying the weld connection with the roll sleeve by discs. Ceramic fiber material is put into the cavity of the sidewall and held in place by a keeper plate. The masses of weld metal joining the roll sleeve to the roll bells are comprised of TIG weld metal formed in an inert gas. Multi-pass welding is performed while supporting the roll assembly during the welding operation at an angled relation to the horizontal. The roll is rotated in the angled relation to allow the deposition of weld metal in multiple passes and in an accurately controllable manner preferably by the use of a microprocessor to control the positioning of weld electrode. The metal of the roll body is subject to annealing solution heat treating after a predetermined time of service in the high temperature environment of the furnace. The solution annealing reverses embrittlement and restores ductility caused by aging process …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.