IT1140427B - Semi-continuous casting of metals - Google Patents
Semi-continuous casting of metalsInfo
- Publication number
- IT1140427B IT1140427B IT25921/81A IT2592181A IT1140427B IT 1140427 B IT1140427 B IT 1140427B IT 25921/81 A IT25921/81 A IT 25921/81A IT 2592181 A IT2592181 A IT 2592181A IT 1140427 B IT1140427 B IT 1140427B
- Authority
- IT
- Italy
- Prior art keywords
- mould
- pressure
- molten metal
- metal
- metals
- Prior art date
Links
- 229910052751 metal Inorganic materials 0.000 title abstract 7
- 239000002184 metal Substances 0.000 title abstract 7
- 238000009749 continuous casting Methods 0.000 title abstract 2
- 150000002739 metals Chemical class 0.000 title abstract 2
- 230000008014 freezing Effects 0.000 abstract 2
- 238000007710 freezing Methods 0.000 abstract 2
- 230000037452 priming Effects 0.000 abstract 2
- 230000008023 solidification Effects 0.000 abstract 2
- 238000007711 solidification Methods 0.000 abstract 2
- 229910000838 Al alloy Inorganic materials 0.000 abstract 1
- 229910001338 liquidmetal Inorganic materials 0.000 abstract 1
- 238000005204 segregation Methods 0.000 abstract 1
Abstract
Semi-continuous casting of metals with long freezing ranges is carried out by periodically admitting molten metal through the base of the mould. The top of the mould is closed with a priming plate. When the solidified skin against the mould has reached the required thickness the plate is raised, and more liquid metal admitted to fill the space beneath. During each filling excess metal is introduced and rises through the priming plate under increased pressure. Flow is reversed at least once by a higher downward pressure. Solidification is completed under combined pressure from above and below. Keeping the molten metal in motion relative to the solidified skin prevents segregation, which may be a problem with long freezing ranges e.g. in aluminium alloys. Putting it under pressure also aids soundness during solidification. The excess metal per stage may be between 0.1 and 0.9 times the effective volume of the mould. The admission pressure of the molten metal may be increased 1.1 to 15.0 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT25921/81A IT1140427B (en) | 1981-12-30 | 1981-12-30 | Semi-continuous casting of metals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT25921/81A IT1140427B (en) | 1981-12-30 | 1981-12-30 | Semi-continuous casting of metals |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IT8125921A0 IT8125921A0 (en) | 1981-12-30 |
| IT1140427B true IT1140427B (en) | 1986-09-24 |
Family
ID=11218151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT25921/81A IT1140427B (en) | 1981-12-30 | 1981-12-30 | Semi-continuous casting of metals |
Country Status (1)
| Country | Link |
|---|---|
| IT (1) | IT1140427B (en) |
-
1981
- 1981-12-30 IT IT25921/81A patent/IT1140427B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| IT8125921A0 (en) | 1981-12-30 |
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