IT1262803B - Method and apparatus for melting in inert atmosphere and at controlled pressure for small batches of titanium and its alloys - Google Patents
Method and apparatus for melting in inert atmosphere and at controlled pressure for small batches of titanium and its alloysInfo
- Publication number
- IT1262803B IT1262803B ITVR930069A ITVR930069A IT1262803B IT 1262803 B IT1262803 B IT 1262803B IT VR930069 A ITVR930069 A IT VR930069A IT VR930069 A ITVR930069 A IT VR930069A IT 1262803 B IT1262803 B IT 1262803B
- Authority
- IT
- Italy
- Prior art keywords
- melting
- cylinder
- inert gas
- casting
- chamber
- Prior art date
Links
- 238000002844 melting Methods 0.000 title abstract 13
- 230000008018 melting Effects 0.000 title abstract 13
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title abstract 2
- 238000000034 method Methods 0.000 title abstract 2
- 239000010936 titanium Substances 0.000 title abstract 2
- 229910052719 titanium Inorganic materials 0.000 title abstract 2
- 229910045601 alloy Inorganic materials 0.000 title 1
- 239000000956 alloy Substances 0.000 title 1
- 238000005266 casting Methods 0.000 abstract 5
- 239000011261 inert gas Substances 0.000 abstract 4
- 238000010891 electric arc Methods 0.000 abstract 2
- 229910052751 metal Inorganic materials 0.000 abstract 2
- 239000002184 metal Substances 0.000 abstract 2
- 230000004913 activation Effects 0.000 abstract 1
- 238000007872 degassing Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000011819 refractory material Substances 0.000 abstract 1
- 229920006395 saturated elastomer Polymers 0.000 abstract 1
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
Method for melting of titanium, comprising, in sequence, the provision of a metal batch to be melted in a crucible positioned next to a melting cylinder with refractory and an impression mould, located inside a hermetic melting and casting chamber, able to be reclined and provided with electric arc melting means for the batch, the creation, in an interval of time of at least two minutes, of a vacuum of at least 4 millibar inside the melting and casting chamber, controlled by a high-vacuum device aspirating from a portion of the cylinder, for degasification of the refractory material, the feeding of an inert gas at low flow rate to perform a "preflushing" of the melting chamber, the activation of electric arc means to bring about the melting of the batch, interruption of the aspiration, and the inert gas supply, until the melting and casting chamber is saturated, tilting of the melting chamber to perform the casting from the crucible to the melting cylinder, the feeding of inert gas at high flow rate to push the molten metal and make it go into the material inside the melting cylinder, the controlled unloading of the inert gas from part of the melting cylinder at a value equal to or slightly greater than atmospheric pressure, so as to have a casting at constant pressure. <IMAGE>
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITVR930069A IT1262803B (en) | 1993-09-20 | 1993-09-20 | Method and apparatus for melting in inert atmosphere and at controlled pressure for small batches of titanium and its alloys |
| EP94114299A EP0651220B1 (en) | 1993-09-20 | 1994-09-12 | Kiln for firing and/or casting prosthodontic products |
| ES94114299T ES2141791T3 (en) | 1993-09-20 | 1994-09-12 | OVEN TO HEAT OR MELT DENTAL PROSTHESES. |
| US08/305,277 US5496017A (en) | 1993-09-20 | 1994-09-13 | Kiln for firing and/or casting prosthodontic products |
| DE4433373A DE4433373A1 (en) | 1993-09-20 | 1994-09-20 | Furnace for firing and / or casting dental prosthetic products |
| US08/567,597 US5634514A (en) | 1993-09-20 | 1995-12-05 | Kiln for firing and or casting prosthodontic products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITVR930069A IT1262803B (en) | 1993-09-20 | 1993-09-20 | Method and apparatus for melting in inert atmosphere and at controlled pressure for small batches of titanium and its alloys |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| ITVR930069A0 ITVR930069A0 (en) | 1993-09-20 |
| ITVR930069A1 ITVR930069A1 (en) | 1995-03-20 |
| IT1262803B true IT1262803B (en) | 1996-07-04 |
Family
ID=11427730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ITVR930069A IT1262803B (en) | 1993-09-20 | 1993-09-20 | Method and apparatus for melting in inert atmosphere and at controlled pressure for small batches of titanium and its alloys |
Country Status (1)
| Country | Link |
|---|---|
| IT (1) | IT1262803B (en) |
-
1993
- 1993-09-20 IT ITVR930069A patent/IT1262803B/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| ITVR930069A1 (en) | 1995-03-20 |
| ITVR930069A0 (en) | 1993-09-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 0001 | Granted | ||
| TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19971203 |