CN100531947C - Process of high-pressure air-flow scale removal - Google Patents
Process of high-pressure air-flow scale removal Download PDFInfo
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- CN100531947C CN100531947C CNB2007100117208A CN200710011720A CN100531947C CN 100531947 C CN100531947 C CN 100531947C CN B2007100117208 A CNB2007100117208 A CN B2007100117208A CN 200710011720 A CN200710011720 A CN 200710011720A CN 100531947 C CN100531947 C CN 100531947C
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- steel billet
- hot steel
- high pressure
- iron scale
- flow
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Abstract
The present invention relates to a high-pressure air-flow descalling method. It includes the following several steps: making compressed air be passed through a high-pressure nozzle so as to form a high-pressure air flow with a certin frequency. Said frequency is approaching to the frequency of the scale; at the same time of that the hot steel billet is passed through the high-pressure air-flow nozzle, the high-pressure air flow can be jetted onto the surface of hot steel billet to impact the hot steel billet and produce resonance together with scale of hot steel billet; under the action of air flow impact and resonance the scale can be broken and separated from said hot steel billet.
Description
Technical field
The present invention relates to used descaling process in the metal fever process, relate in particular to a kind of process of high-pressure air-flow descaling.
Background technology
At present, the mode of high-pressure water descaling is adopted in the removal of hot rolling slab iron scale more.But water under high pressure can be taken away some heats of slab in de-scaling, and the heating-up temperature that for this reason will improve hot slab is to remedy the thermal loss that high-pressure water descaling causes, and the thermal loss amount that high-pressure water descaling causes on sheet billet is a key issue.Therefore the low discharge high-pressure water descaling is being studied with the provisional capital by various countries, to reduce the loss of energy.But because the restriction of self mechanism, the reduction of flow is extremely limited.High-pressure water descaling need consume great amount of water resources in addition.
The clear 59-199110A of Japanese patent application JP discloses a kind of process of gases at high pressure de-scaling, compressed air by high pressure nozzle, is formed the high pressure draught of this frequency, and hot steel billet is by high pressure nozzle the time, high pressure draught is injected into hot billet surface, impacts hot steel billet; Under gas shock, iron scale is broken and separate with base substrate, and broken iron scale is by the air-flow hot steel billet that blows off.The proportion of considering air is little, and its hitting power for iron scale is limited, even if thereby high pressure draught, its thickness of removing iron scale is also very limited, it is thick that maximum reaches 1mm, thereby the overall effect of scaling is unsatisfactory.
Summary of the invention
In view of the above-mentioned deficiency of existing in prior technology, the invention discloses little, the no water resource waste of a kind of heat loss, and the process of the significant high-pressure air-flow descaling of scale removal effect.
Technical solution of the present invention is achieved in that
A kind of process of high-pressure air-flow descaling is characterized in that it comprises the steps:
Compressed air forms the high pressure draught of certain frequency by the high pressure draught nozzle, and the intrinsic frequency of this frequency and iron scale is approaching;
When hot steel billet passed through the high pressure draught nozzle, high pressure draught was ejected into hot billet surface, impacts hot steel billet, and resonated with the iron scale generation of hot steel billet;
Under gas shock and resonance effect, iron scale is broken and separate with base substrate, and broken iron scale is by the air-flow hot steel billet that blows off.
The used de-scaling equipment of above-mentioned technology is characterised in that it comprises cover body and interior roller-way roller, pressure roller and the high pressure draught nozzle of cover body, and described roller-way roller is distributed in bottom in the cover body; Described pressure roller is positioned at the outlet of the hot steel billet of cover body and the top of porch; Roller-way roller and pressure roller prop up the upper and lower surface both sides that are pressed on the hot steel billet that enters cover body respectively; Described high pressure gas arrangement of nozzles is in the upper and lower surface both sides of cover body internal heat steel billet, and hot billet surface one segment distance of distance.
Because the thermal conductivity factor of water is 10-100 times of air, the thermal capacity of air is low in addition, so the mode of this pressure-air de-scaling is very little for the heat loss of hot steel billet, this has just fundamentally solved the heat loss problem of hot steel billet in the de-scaling process, has also avoided the consumption of water resource simultaneously.And high pressure draught and iron scale produce resonance, like this under the acting in conjunction of gas shock and resonance effect, the iron scale fragmentation, separate with base substrate, and by the air-flow hot steel billet that blows off.The present invention can be widely used on the hot rolling line or the iron scale on the hot blank of removal in other hot procedures.
Description of drawings
1 in accompanying drawing of the present invention is the generalized section of high pressure gas descaling mill.
Among the figure, 1, pressure roller 2, high pressure draught nozzle 3, roller-way roller 4, hot steel billet 5, cover body.
The specific embodiment
As shown in Figure 1, hot steel billet 4 enters the high-pressure air-flow descaling machine by roller-way roller 3, pressure roller 1 is used for the hot steel billet 4 of force feed and forms the casing of a relative closure with cover body 5, when hot steel billet 4 runs to the position of high pressure draught nozzle 2, high pressure draught nozzle 2 is with the upper and lower surface ejection high pressure draught of certain frequency thermotropism steel billet 4, the injection frequency of described high pressure draught and iron scale intrinsic frequency are approaching, thereby in the iron scale of the hot billet surface of gas shock, high pressure draught and iron scale produce resonance, like this under the acting in conjunction of gas shock and resonance effect, the iron scale fragmentation, separate with base substrate, and by the air-flow hot steel billet that blows off.
Claims (1)
1, a kind of process of high-pressure air-flow descaling is characterized in that it comprises the steps:
Compressed air forms the high pressure draught of certain frequency by the high pressure draught nozzle, and the intrinsic frequency of this frequency and iron scale is approaching;
When hot steel billet passed through the high pressure draught nozzle, high pressure draught was ejected into hot billet surface, impacts hot steel billet, and resonated with the iron scale generation of hot steel billet;
Under gas shock and resonance effect, iron scale is broken and separate with base substrate, and broken iron scale is by the air-flow hot steel billet that blows off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100117208A CN100531947C (en) | 2007-06-15 | 2007-06-15 | Process of high-pressure air-flow scale removal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100117208A CN100531947C (en) | 2007-06-15 | 2007-06-15 | Process of high-pressure air-flow scale removal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101069898A CN101069898A (en) | 2007-11-14 |
| CN100531947C true CN100531947C (en) | 2009-08-26 |
Family
ID=38897402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100117208A Expired - Fee Related CN100531947C (en) | 2007-06-15 | 2007-06-15 | Process of high-pressure air-flow scale removal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100531947C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104084436A (en) * | 2014-06-18 | 2014-10-08 | 浙江松盛金属制品有限公司 | Device for removing oxide scale on flat steel surface |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102284523A (en) * | 2011-08-24 | 2011-12-21 | 莱芜钢铁集团有限公司 | Method for descaling billets by rough rolling |
| CN102806238B (en) * | 2012-08-21 | 2014-10-29 | 莱芜钢铁集团有限公司 | Scale removal equipment and scale removal method |
| CN106513459B (en) * | 2016-12-14 | 2019-02-15 | 鹤山恒基钢丝制品有限公司 | A kind of air knife |
| CN113787458B (en) * | 2021-08-30 | 2023-03-17 | 山东省冶金设计院股份有限公司 | Air-blowing descaling box device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3775180A (en) * | 1969-12-08 | 1973-11-27 | Nippon Kokan Kk | Method for descaling steel |
-
2007
- 2007-06-15 CN CNB2007100117208A patent/CN100531947C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3775180A (en) * | 1969-12-08 | 1973-11-27 | Nippon Kokan Kk | Method for descaling steel |
Non-Patent Citations (2)
| Title |
|---|
| 热轧氧化铁皮的成因及去除方法. 魏天斌.钢铁研究，第4期. 2003 |
| 热轧氧化铁皮的成因及去除方法. 魏天斌.钢铁研究，第4期. 2003 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104084436A (en) * | 2014-06-18 | 2014-10-08 | 浙江松盛金属制品有限公司 | Device for removing oxide scale on flat steel surface |
| CN104084436B (en) * | 2014-06-18 | 2016-11-16 | 浙江松盛金属制品有限公司 | Band steel surface scale removal device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101069898A (en) | 2007-11-14 |
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Owner name: CHINA FIRST HEACY MACHINE STOCK CO., LTD. Free format text: FORMER OWNER: CHINESE NO.1 HEAVY MECHANICAL GROUP CO. Effective date: 20090814 |
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Address after: Zip Road, Fulaerji District, Qigihar, Heilongjiang Province, zip code: 161042 Co-patentee after: DALIAN DESIGN INSTITUTE Co.,Ltd. CHINA FIRST HEAVY INDUSTRIES Patentee after: China First Heavy Industries Address before: Zip Road, Fulaerji District, Qigihar, Heilongjiang Province, zip code: 161042 Co-patentee before: Dalian Design and Research Institute, First Heavy Industries Group Patentee before: China First Heavy Industries |
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Effective date of registration: 20090814 Address after: Zip Road, Fulaerji District, Qigihar, Heilongjiang Province, zip code: 161042 Co-patentee after: DALIAN DESIGN INSTITUTE Co.,Ltd. CHINA FIRST HEAVY INDUSTRIES Patentee after: China First Heavy Machinery Co., Ltd. Address before: Zip Road, Fulaerji District, Qigihar, Heilongjiang Province, zip code: 161042 Co-patentee before: DALIAN DESIGN INSTITUTE Co.,Ltd. CHINA FIRST HEAVY INDUSTRIES Patentee before: China First Heavy Industries |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090826 Termination date: 20180615 |
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| CF01 | Termination of patent right due to non-payment of annual fee |