CN203678886U - Device for removing scale on inner surface of hot rolled steel pipe on line - Google Patents
Device for removing scale on inner surface of hot rolled steel pipe on line Download PDFInfo
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- CN203678886U CN203678886U CN201320864188.5U CN201320864188U CN203678886U CN 203678886 U CN203678886 U CN 203678886U CN 201320864188 U CN201320864188 U CN 201320864188U CN 203678886 U CN203678886 U CN 203678886U
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- steel pipe
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- borax
- gases
- high pressure
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Abstract
The utility model provides a device for removing a scale on the inner surface of a hot rolled steel pipe on line. The device is arranged between a punching machine and a rolling machine, and comprises a borax injection unit and a high-pressure gas blowing unit, wherein the borax injection unit comprises a first nozzle which is used for injecting borax to the inner surface of the steel pipe; the high-pressure gas blowing unit comprises a second nozzle which is used for blowing high-pressure gas to the inner surface of the steel pipe; the first nozzle and the second nozzle are arranged at the same end of the steel pipe; the first nozzle is aligned with the upper part or the middle part of the cross section of an inner cavity of the steel pipe; the second nozzle is aligned with the lower part of the cross section of the inner cavity of the steel pipe. According to the device, the scale on the inner surface of the steel pipe can be effectively removed, and remaining substances are blown out of the steel pipe, so that the quality of the steel pipe is improved, and the service life of a core rod is prolonged; moreover, the device is simple in structure.
Description
Technical field
The utility model relates to steel tube fabrication technique field, more particularly, relates to a kind of on line clearance equip of hot finished steel pipe inner surface oxide skin.
Background technology
In process of production, the surfaces externally and internally of steel pipe can produce iron scale to steel pipe, if iron scale is not removed totally, can in steel tube surface, form " pockmark ".
Particularly, after steel billet heats in heat hot stove, outer surface can produce the thick iron oxide cortex of one deck, conventionally, enters before punch, adopts water under high pressure that its surperficial iron scale is chased.And steel billet forms hollow hollow billet through perforation, the inner surface of hollow billet also can produce iron scale, hollow billet being delivered to before milling train wears mandrel rolling, also its surperficial iron scale should be removed clean.
In the prior art, remove a kind of mode of hollow billet inner wall oxide iron sheet for utilizing high-pressure water mist spary, wash out the oxide being attached on hollow billet internal face, generate hydroxide passivating film simultaneously, but the method difficulty is large, simultaneously to keeping hollow billet temperature unfavorable, and have some water and remain in hollow billet.
Therefore, need the device of a kind of new removing hot finished steel pipe inner surface oxide skin of exploitation badly.
Utility model content
For prior art above shortcomings, the purpose of this utility model is to solve the one or more problems that exist in above-mentioned prior art.
For example, one of the utility model object is to provide a kind of and can effectively removes the few device of remnant in internal surface of steel pipe surface oxidized skin and steel pipe.
The utility model provides a kind of device of online removing hot finished steel pipe inner surface oxidized iron sheet.Described device is arranged between punch and milling train, and described device comprises that borax winding-up unit and gases at high pressure purge unit, and wherein, described borax winding-up unit comprises for the first nozzle to steel pipe internal-surface winding-up borax; Described gases at high pressure purge unit and comprise for the second nozzle to steel pipe internal-surface winding-up gases at high pressure; Described the first nozzle and described second nozzle are arranged on same one end of steel pipe, and top or the middle part of described the first nozzle alignment steel pipe inner chamber cross section, the bottom of the inner chamber cross section of described second nozzle alignment steel pipe.
According to an embodiment of the device of online removing hot finished steel pipe inner surface oxidized iron sheet of the present utility model, the ejiction opening center line of described the first nozzle and the dead in line of described steel pipe, the ejiction opening center line of described second nozzle and the diapire setting of the parallel and described second nozzle of the axis of described steel pipe near described steel pipe internal-surface.
According to an embodiment of the device of online removing hot finished steel pipe inner surface oxidized iron sheet of the present utility model, the pressure of the gases at high pressure of described second nozzle ejection is 15～25MPa.
According to an embodiment of the device of online removing hot finished steel pipe inner surface oxidized iron sheet of the present utility model, described gases at high pressure are inert gas.
Compared with prior art, the utility model can effectively be removed the iron scale of steel pipe internal-surface and remaining material is blown out to steel pipe, improve the quality of steel pipe and extend life-span of plug, and apparatus structure is simple.
Accompanying drawing explanation
By the description of carrying out below in conjunction with accompanying drawing, above and other object of the present utility model and feature will become apparent, wherein:
Fig. 1 shows according to the device of online removing hot finished steel pipe inner surface oxidized iron sheet of the utility model exemplary embodiment and the schematic diagram that coordinates of steel pipe.
Description of reference numerals is as follows:
1-the first nozzle, 2-the first support, 3-the second support, 4-second nozzle and 5-steel pipe.
The specific embodiment
Hereinafter, describe the device of online removing hot finished steel pipe inner surface oxidized iron sheet of the present utility model in detail in connection with exemplary embodiment.
Fig. 1 is according to the device of online removing hot finished steel pipe inner surface oxidized iron sheet of the utility model exemplary embodiment and the schematic diagram that coordinates of steel pipe.As shown in Figure 1, be arranged between punch (not shown) and milling train (not shown) according to the device of the online removing hot finished steel pipe inner surface oxidized iron sheet of the utility model exemplary embodiment, this device comprises that borax winding-up unit and gases at high pressure purge unit.
Wherein, borax winding-up unit comprises for being arranged on the first support 2 to the first nozzle 1, the first nozzle of steel pipe internal-surface winding-up borax.Gases at high pressure purge unit and comprise that second nozzle 4 is arranged on the second support 3 for the second nozzle 4 to steel pipe internal-surface winding-up gases at high pressure.The first nozzle 1 and second nozzle 4 are arranged on same one end of steel pipe 5, and the first nozzle 1 align top or the middle part of steel pipe inner chamber cross section, the align bottom of cross section of steel pipe inner chamber of second nozzle 4.In the present embodiment, the ejiction opening center line of the first nozzle 1 and the dead in line of steel pipe 5, so that borax is injected on the whole inner surface of steel pipe equably, and the outlet of the first nozzle 1 is formed as horn mouth shape and is dispersed to the whole inner surface of steel pipe so that the borax of ejection is " horn-like ".The ejiction opening center line of second nozzle 4 and second nozzle 4 parallel with the axis of steel pipe 5 is near the diapire setting of steel pipe internal-surface, to reach the best effect that purges.
When use, said apparatus is positioned between the transverse-moving mechanism between punch and milling train, then, the first nozzle 1 is opened, borax is blown into steel pipe internal-surface, to form the protective layer that prevents steel pipe internal-surface oxidation; Then, close the first nozzle 1 and open second nozzle 4, the remaining materials such as the iron scale of steel pipe internal-surface and borax crystal are blown out to steel pipe internal-surface; Finally, close second nozzle 4, and steel pipe is delivered to milling train foreground and wear mandrel rolling.
The effect that second nozzle 4 mainly plays is to penetrate gases at high pressure so that the remaining materials such as the iron scale being stripped down by borax and borax crystal are blown out to steel pipe to steel tube inner spray, therefore, its required high-pressure gas pressure is larger, and, steel pipe length difference, required best jetting pressure is also different.In the present embodiment, the length of steel pipe is 5～15 meters, and second nozzle is close to the setting of steel pipe inner wall face, and the pressure of the gases at high pressure of second nozzle ejection is 15～25MPa.If the expulsion pressure of second nozzle is too small, described remaining material can not be blown out to steel pipe, while remaining in iron scale in steel pipe etc. to steel pipe internal-surface and subsequent processing steel pipe rolling, the harm of internal strain instrument (for example, plug) is large, affects the quality of steel pipe and the life-span of plug; Otherwise, if pressure is excessive, can reduce the temperature of steel pipe internal-surface.And in this application, the bottom of second nozzle alignment steel pipe inner chamber cross section, can remove the remnant in steel pipe clean more effectively.In addition, gases at high pressure can be selected air, but preferred inert gas, and for example nitrogen, argon gas, to avoid being oxidized steel pipe internal-surface.
In sum, the apparatus structure of online removing hot finished steel pipe inner surface oxidized iron sheet of the present utility model is simple, can effectively remove the iron scale of steel pipe internal-surface and remaining material is blown out to steel pipe, has improved the quality of steel pipe and has extended life-span of plug.
Although above by having described the utility model in conjunction with exemplary embodiment, but those skilled in the art should be clear, in the case of not departing from the spirit and scope that claim limits, can carry out various modifications and change to exemplary embodiment of the present utility model.
Claims (4)
1. an online device of removing hot finished steel pipe inner surface oxidized iron sheet, is characterized in that, described device is arranged between punch and milling train, and described device comprises that borax winding-up unit and gases at high pressure purge unit, wherein,
Described borax winding-up unit comprises for the first nozzle to steel pipe internal-surface winding-up borax;
Described gases at high pressure purge unit and comprise for the second nozzle to steel pipe internal-surface winding-up gases at high pressure;
Described the first nozzle and described second nozzle are arranged on same one end of steel pipe, and top or the middle part of the cross section of described the first nozzle alignment steel pipe inner chamber, the bottom of the cross section of described second nozzle alignment steel pipe inner chamber.
2. the device of online removing hot finished steel pipe inner surface oxidized iron sheet according to claim 1, it is characterized in that, the ejiction opening center line of described the first nozzle and the dead in line of described steel pipe, the ejiction opening center line of described second nozzle and the diapire setting of the parallel and described second nozzle of the axis of described steel pipe near described steel pipe internal-surface.
3. the device of online removing hot finished steel pipe inner surface oxidized iron sheet according to claim 1, is characterized in that, the pressure of the gases at high pressure of described second nozzle ejection is 15～25MPa.
4. the device of online removing hot finished steel pipe inner surface oxidized iron sheet according to claim 1, is characterized in that, described gases at high pressure are inert gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320864188.5U CN203678886U (en) | 2013-12-25 | 2013-12-25 | Device for removing scale on inner surface of hot rolled steel pipe on line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320864188.5U CN203678886U (en) | 2013-12-25 | 2013-12-25 | Device for removing scale on inner surface of hot rolled steel pipe on line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203678886U true CN203678886U (en) | 2014-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320864188.5U Expired - Fee Related CN203678886U (en) | 2013-12-25 | 2013-12-25 | Device for removing scale on inner surface of hot rolled steel pipe on line |
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| CN (1) | CN203678886U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105436220A (en) * | 2015-12-01 | 2016-03-30 | 成都睿达致祥科技有限公司 | Oil removing device for inner hole of cold reducing mill |
| CN110479705A (en) * | 2018-05-15 | 2019-11-22 | 天津市顺丰源钢管制造有限公司 | A kind of list edge blowing-down device for hot-dip galvanized steel pipe |
| CN111014304A (en) * | 2019-12-30 | 2020-04-17 | 太原重工股份有限公司 | Steel pipe hot rolling rotary expanding production equipment and method |
-
2013
- 2013-12-25 CN CN201320864188.5U patent/CN203678886U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105436220A (en) * | 2015-12-01 | 2016-03-30 | 成都睿达致祥科技有限公司 | Oil removing device for inner hole of cold reducing mill |
| CN105436220B (en) * | 2015-12-01 | 2018-02-16 | 青岛华仁技术孵化器有限公司 | A kind of cold pilger mill endoporus degreaser |
| CN110479705A (en) * | 2018-05-15 | 2019-11-22 | 天津市顺丰源钢管制造有限公司 | A kind of list edge blowing-down device for hot-dip galvanized steel pipe |
| CN111014304A (en) * | 2019-12-30 | 2020-04-17 | 太原重工股份有限公司 | Steel pipe hot rolling rotary expanding production equipment and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 Termination date: 20171225 |
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| CF01 | Termination of patent right due to non-payment of annual fee |