BE540760A - - Google Patents
Info
- Publication number
- BE540760A BE540760A BE540760DA BE540760A BE 540760 A BE540760 A BE 540760A BE 540760D A BE540760D A BE 540760DA BE 540760 A BE540760 A BE 540760A
- Authority
- BE
- Belgium
- Prior art keywords
- wings
- cap
- profiles
- box
- box profile
- Prior art date
Links
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000010791 quenching Methods 0.000 claims description 4
- 230000000171 quenching effect Effects 0.000 claims description 4
- 238000005496 tempering Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 6
- 235000000396 iron Nutrition 0.000 description 5
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 210000003660 reticulum Anatomy 0.000 description 2
- 241000283074 Equus asinus Species 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D17/00—Caps for supporting mine roofs
- E21D17/01—Caps for supporting mine roofs characterised by the shape of the cap, e.g. of specified cross-section
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D17/00—Caps for supporting mine roofs
- E21D17/10—Details of mine caps for engaging the tops of pit-props, with or without retaining-plates; Retaining-plates
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Pressure Vessels And Lids Thereof (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE540760A true BE540760A (https=) |
Family
ID=170016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE540760D BE540760A (https=) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE540760A (https=) |
-
0
- BE BE540760D patent/BE540760A/fr unknown
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