IT1260282B - Appts. for descaling blooms, thin slabs and billets - comprises telescopic arms with nozzle that spray descaling water as they stroke parallel to slab and shut-off the water on return stroke to conserve water. - Google Patents
Appts. for descaling blooms, thin slabs and billets - comprises telescopic arms with nozzle that spray descaling water as they stroke parallel to slab and shut-off the water on return stroke to conserve water.Info
- Publication number
- IT1260282B IT1260282B ITUD920172A IT1260282B IT 1260282 B IT1260282 B IT 1260282B IT UD920172 A ITUD920172 A IT UD920172A IT 1260282 B IT1260282 B IT 1260282B
- Authority
- IT
- Italy
- Prior art keywords
- water
- descaling
- slab
- spray
- arms
- Prior art date
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title abstract 13
- 239000007921 spray Substances 0.000 title abstract 5
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 238000005096 rolling process Methods 0.000 abstract 1
- 238000009987 spinning Methods 0.000 abstract 1
- 238000005496 tempering Methods 0.000 abstract 1
Landscapes
- Nozzles (AREA)
Abstract
An appts. for descaling blooms, thin slabs and billets (11) immediately after moulding and just before rolling mill stands comprises telescopic arms (12, 13) that spray water via nozzles (14a, 14b) on to the slab (11) as the arms are stroked parallel to the slab. This water jet descales the slab and the water is shut-off during the return stroke, both to conserve water and allow tempering of even thin slabs without overcooling. This is best achieved if the spray leads (14) are stroked at 1.5 to 20 m/min. and pref. 4-10 m/min. relative to the slab. The two arms (12a, 12b) can start their descaling, water-jetting stroke from opposite ends (16, 21) of the slab. This action is most effective with thin slabs as coating and distortion are minimised. The spray nozzles (14) can spin relative to the arms at 1.75 to 3.5m/sec. with a water pressure of 3 to 25 kg/cm2, to remove scale more effectively, a cover being used to protect the slab surface from water during the return stroke. Two or more nozzles (14) can be used to fully cover the slab surface with water jets for efficient descaling. These can be staggered to produce a gradual descaling action and can be placed pref. 50 to 100mm from the slab surface and inclined at 10-30 degrees for effective descaling. Water can be pumped at 600 to 700 bar to spray nozzle heads spinning at each end of the telescopic arms. This reduces the required water flow rate, to further conserve water.
Priority Applications (11)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000172 IT1260282B (en) | 1992-11-23 | 1992-11-23 | Appts. for descaling blooms, thin slabs and billets - comprises telescopic arms with nozzle that spray descaling water as they stroke parallel to slab and shut-off the water on return stroke to conserve water. |
AT93110927T ATE158729T1 (en) | 1992-07-31 | 1993-07-08 | DESCALE DEVICE USING WATER |
EP93110927A EP0586823B1 (en) | 1992-07-31 | 1993-07-08 | Descaling device employing water |
ES93110927T ES2108170T3 (en) | 1992-07-31 | 1993-07-08 | DECHARGING DEVICE USING WATER. |
DE69314275T DE69314275T2 (en) | 1992-07-31 | 1993-07-08 | Descaling device using water |
US08/093,000 US5388602A (en) | 1992-07-31 | 1993-07-19 | Descaling device employing water |
KR1019930013525A KR940002372A (en) | 1992-07-31 | 1993-07-19 | Descaling device using water |
CN93109310A CN1046221C (en) | 1992-07-30 | 1993-07-29 | Descaling device employing mater |
RU93049260A RU2129053C1 (en) | 1992-07-31 | 1993-07-30 | Method and apparatus for descaling with use of water |
MX9304606A MX9304606A (en) | 1992-07-31 | 1993-07-30 | DESCALING DEVICE USING WATER. |
BR9303050A BR9303050A (en) | 1992-07-31 | 1993-07-30 | DE-SCALING DEVICE USING WATER |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000172 IT1260282B (en) | 1992-11-23 | 1992-11-23 | Appts. for descaling blooms, thin slabs and billets - comprises telescopic arms with nozzle that spray descaling water as they stroke parallel to slab and shut-off the water on return stroke to conserve water. |
Publications (3)
Publication Number | Publication Date |
---|---|
ITUD920172A0 ITUD920172A0 (en) | 1992-11-23 |
ITUD920172A1 ITUD920172A1 (en) | 1994-05-24 |
IT1260282B true IT1260282B (en) | 1996-04-03 |
Family
ID=11421176
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT000172 IT1260282B (en) | 1992-07-30 | 1992-11-23 | Appts. for descaling blooms, thin slabs and billets - comprises telescopic arms with nozzle that spray descaling water as they stroke parallel to slab and shut-off the water on return stroke to conserve water. |
Country Status (1)
Country | Link |
---|---|
IT (1) | IT1260282B (en) |
-
1992
- 1992-11-23 IT IT000172 patent/IT1260282B/en active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
ITUD920172A0 (en) | 1992-11-23 |
ITUD920172A1 (en) | 1994-05-24 |
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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: 19971126 |