IT1022878B - Vacuum furnace for heating prodn. objects - using two vacuum chambers operated at different vacuum-hardness - Google Patents
Vacuum furnace for heating prodn. objects - using two vacuum chambers operated at different vacuum-hardnessInfo
- Publication number
- IT1022878B IT1022878B IT2843174A IT2843174A IT1022878B IT 1022878 B IT1022878 B IT 1022878B IT 2843174 A IT2843174 A IT 2843174A IT 2843174 A IT2843174 A IT 2843174A IT 1022878 B IT1022878 B IT 1022878B
- Authority
- IT
- Italy
- Prior art keywords
- vacuum
- chamber
- objects
- prodn
- pref
- Prior art date
Links
Abstract
Process for the treatment of prodn. objects arranged in a chamber (I) which is connected by an opening to a chamber (II) which is continuously evacuated by a vacuum source to obtain a pressure (II) of 10 mu to 6700 mu in chamber (II); a compressed gas, which may be functional or inert, is continuously fed into chamber (I) so its pressure is always higher than pressure (II) and at a value of 100-10,000 mu so the gas flows continuously into chamber (II), and the flow of gas maintains the pressures (I, II). The pref. ratio I:II is between 1.5:1 and 20:1, and the pref. flow of compressed gas is 3-300 1/h, esp. using N2, Ar, O2, H2, air or hydrocarbon gases. The opening between the chambers may be variable and the objects are pref. heated up to 3000 degrees C. Used e.g. for heating steel or iron castings for degassing and removal of surface oxide prior to glazing; brazing Al without flux; soldering or brazing OFHC copper; brazing of titanium; heat-treating steels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT2843174A IT1022878B (en) | 1974-10-15 | 1974-10-15 | Vacuum furnace for heating prodn. objects - using two vacuum chambers operated at different vacuum-hardness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT2843174A IT1022878B (en) | 1974-10-15 | 1974-10-15 | Vacuum furnace for heating prodn. objects - using two vacuum chambers operated at different vacuum-hardness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IT1022878B true IT1022878B (en) | 1978-04-20 |
Family
ID=11223590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT2843174A IT1022878B (en) | 1974-10-15 | 1974-10-15 | Vacuum furnace for heating prodn. objects - using two vacuum chambers operated at different vacuum-hardness |
Country Status (1)
| Country | Link |
|---|---|
| IT (1) | IT1022878B (en) |
-
1974
- 1974-10-15 IT IT2843174A patent/IT1022878B/en active
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