JPS5469524A - Descaling method for hot rolled steel strip - Google Patents
Descaling method for hot rolled steel stripInfo
- Publication number
- JPS5469524A JPS5469524A JP13625577A JP13625577A JPS5469524A JP S5469524 A JPS5469524 A JP S5469524A JP 13625577 A JP13625577 A JP 13625577A JP 13625577 A JP13625577 A JP 13625577A JP S5469524 A JPS5469524 A JP S5469524A
- Authority
- JP
- Japan
- Prior art keywords
- strip
- scale
- coil
- steel strip
- cooling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 title abstract 3
- 239000010959 steel Substances 0.000 title abstract 3
- 238000000034 method Methods 0.000 title abstract 2
- 238000001816 cooling Methods 0.000 abstract 3
- 239000000463 material Substances 0.000 abstract 3
- 238000005422 blasting Methods 0.000 abstract 2
- 238000009835 boiling Methods 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 238000005098 hot rolling Methods 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
Abstract
PURPOSE: To descale a hot rolled steel strip without coil break by coiling the strip; uncoiling the resulting hot coil without cooling; and projecting high press. water and a shot blasting material at the same time.
CONSTITUTION: A steel strip rolled by a hot rolling mill is coiled at 600W750°C. The resulting hot coil is shifted to a descaling process without cooling and uncoiled to the original strip kept at above 250°C. High press. water and a slurried shot blasting material are simultaneously projected on the strip surface. The particles of the material act as boiling nuclei on the surface, cause nuclear boiling heat transfer, and increase cooling rate. The temp. gradient between the strip and surface scale is enlarged, and the scale is finely cracked by the difference in expansion coefficient between the strip and scale, thus the scale being removed thoroughly. Since the descaling is carried out at a temp. above 250°C at which coil break occurs in the strip, the occurence of coil break can be prevented.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13625577A JPS5469524A (en) | 1977-11-15 | 1977-11-15 | Descaling method for hot rolled steel strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13625577A JPS5469524A (en) | 1977-11-15 | 1977-11-15 | Descaling method for hot rolled steel strip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5469524A true JPS5469524A (en) | 1979-06-04 |
Family
ID=15170899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13625577A Pending JPS5469524A (en) | 1977-11-15 | 1977-11-15 | Descaling method for hot rolled steel strip |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5469524A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5066436A (en) * | 1973-10-18 | 1975-06-04 |
-
1977
- 1977-11-15 JP JP13625577A patent/JPS5469524A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5066436A (en) * | 1973-10-18 | 1975-06-04 |
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