BE481661A - - Google Patents
Info
- Publication number
- BE481661A BE481661A BE481661DA BE481661A BE 481661 A BE481661 A BE 481661A BE 481661D A BE481661D A BE 481661DA BE 481661 A BE481661 A BE 481661A
- Authority
- BE
- Belgium
- Prior art keywords
- calibration
- lock
- barrel
- carried out
- Prior art date
Links
- 239000002184 metal Substances 0.000 claims description 4
- 238000000137 annealing Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/50—Component parts or details of props
- E21D15/56—Details of locks of telescopic props
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/50—Component parts or details of props
- E21D15/56—Details of locks of telescopic props
- E21D15/563—Details of locks of telescopic props by which a series of similarly shaped props can obtain an almost equal load-capacity
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Connection Of Plates (AREA)
- Forging (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE481661A true BE481661A (cs) |
Family
ID=128566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE481661D BE481661A (cs) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE481661A (cs) |
-
0
- BE BE481661D patent/BE481661A/fr unknown
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