Atmosphere heat treatment apparatus and method of operating the same
US8262387B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 2, 2006 |
| Grant date | Sep 11, 2012 |
| Priority date | — |
| Expiry date | Sep 24, 2028 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF27D99/0033
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An object of the present invention is to provide an atmosphere heat treatment apparatus that is operable without relying on experiences and/or intuitions of an operator, and a method of operating the same. The atmosphere heat treatment apparatus includes an entrance side exhaust path (26) for exhausting an inside atmosphere from an entrance side of a carburizing chamber (10) to which a transforming gas is supplied, an exit side exhaust path (35) for exhausting the inside atmosphere from an exit side of the heat treatment chamber, and an opening degree adjusting lid (28) attached for adjusting an opening degree of the entrance side exhaust path (26), in which a part or whole of the exit side exhaust path (35) is constituted of a pipe (46) having a predetermined inside diameter. It is checked in advance a relationship of a supplying amount A of the transforming gas with a ratio B:C of an exhaust amount B from the exit side exhaust path (35) and an exhaust amount C from the entrance side exhaust path (26) when a pressure in the carburizing chamber (10) is adjusted to a predetermined furnace pressure by adjusting an opening degree of the entrance side exhaust path (26) with the opening…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.