RO96883B1 - Otel aliat superior pentru inelele taietoare ale masinilor de forat tunele la sectiune plina - Google Patents
Otel aliat superior pentru inelele taietoare ale masinilor de forat tunele la sectiune plinaInfo
- Publication number
- RO96883B1 RO96883B1 RO129695A RO12969587A RO96883B1 RO 96883 B1 RO96883 B1 RO 96883B1 RO 129695 A RO129695 A RO 129695A RO 12969587 A RO12969587 A RO 12969587A RO 96883 B1 RO96883 B1 RO 96883B1
- Authority
- RO
- Romania
- Prior art keywords
- drilling machines
- full section
- tunnel drilling
- alloyed steel
- cutting rings
- Prior art date
Links
- 229910000831 Steel Inorganic materials 0.000 title abstract 2
- 238000005553 drilling Methods 0.000 title abstract 2
- 239000010959 steel Substances 0.000 title abstract 2
- 229910000851 Alloy steel Inorganic materials 0.000 abstract 1
- 229910052804 chromium Inorganic materials 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 229910052748 manganese Inorganic materials 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 229910052750 molybdenum Inorganic materials 0.000 abstract 1
- 229910052759 nickel Inorganic materials 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 229910052720 vanadium Inorganic materials 0.000 abstract 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
- Earth Drilling (AREA)
Abstract
Inventia de fata se refera la un otel aliat superior pentru inelele tpietoare ale masiniilor de forat tunele, la sectiune plina. Otelul are urmatoarea compozitie chimica: C=0,38...0,48%, Mn=1,50...2,00%, Si=0,17...0,37%, S= max 0,015%, P= max.0,020%, Cr=0,80...1,20%, Ni=1,30...1,80%, Mo=0,20...0,30%, V= 0,10...0,18%, Cu=max 0,20%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO129695A RO96883B1 (ro) | 1987-09-10 | 1987-09-10 | Otel aliat superior pentru inelele taietoare ale masinilor de forat tunele la sectiune plina |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO129695A RO96883B1 (ro) | 1987-09-10 | 1987-09-10 | Otel aliat superior pentru inelele taietoare ale masinilor de forat tunele la sectiune plina |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RO96883A2 RO96883A2 (ro) | 1989-03-30 |
| RO96883B1 true RO96883B1 (ro) | 1989-04-01 |
Family
ID=20120654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RO129695A RO96883B1 (ro) | 1987-09-10 | 1987-09-10 | Otel aliat superior pentru inelele taietoare ale masinilor de forat tunele la sectiune plina |
Country Status (1)
| Country | Link |
|---|---|
| RO (1) | RO96883B1 (ro) |
-
1987
- 1987-09-10 RO RO129695A patent/RO96883B1/ro unknown
Also Published As
| Publication number | Publication date |
|---|---|
| RO96883A2 (ro) | 1989-03-30 |
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