CN211587981U - Blowing device for preventing dust from being pressed into strip steel - Google Patents
Blowing device for preventing dust from being pressed into strip steel Download PDFInfo
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- CN211587981U CN211587981U CN201922310237.0U CN201922310237U CN211587981U CN 211587981 U CN211587981 U CN 211587981U CN 201922310237 U CN201922310237 U CN 201922310237U CN 211587981 U CN211587981 U CN 211587981U
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- compressed air
- pressed
- air header
- strip steel
- purging
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- 239000000428 dust Substances 0.000 title claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 12
- 239000010959 steel Substances 0.000 title claims abstract description 12
- 238000007664 blowing Methods 0.000 title description 2
- 238000010926 purge Methods 0.000 claims abstract description 18
- 238000005096 rolling process Methods 0.000 claims abstract description 16
- 239000002184 metal Substances 0.000 claims abstract description 8
- 230000007547 defect Effects 0.000 abstract description 6
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000003825 pressing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
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Abstract
本实用新型提供一种避免粉尘压入带钢的吹扫装置，在精轧机出口导卫上方安装压缩空气集管，压缩空气集管通过金属软管和流量控制阀连接轧机传动侧压缩空气总管，压缩空气集管上倾斜安装有扇形面吹扫喷嘴，喷嘴吹出的扇形面吹扫风朝向本架精轧机机架出口方向。本实用新型通过在机架间安置吹扫装置，使带钢上表面粉尘及异物得到有效吹扫，避免了机架间粉尘、异物压入带钢表面造成的铬坑缺陷，减少了废品损失，提高了带钢表面质量合格率。
The utility model provides a purging device for preventing dust from being pressed into strip steel. A compressed air header is installed above an outlet guide of a finishing mill, and the compressed air header is connected to the compressed air main pipe on the drive side of the rolling mill through a metal hose and a flow control valve. Fan-shaped purging nozzles are installed obliquely on the compressed air header. By arranging a purging device between the racks, the utility model can effectively purge the dust and foreign matter on the upper surface of the strip steel, avoid the chrome pit defect caused by the dust and foreign matter between the racks being pressed into the surface of the strip steel, and reduce the loss of waste products. Improve the qualified rate of strip surface quality.
Description
技术领域technical field
本实用新型属于轧钢机械设备领域，尤其涉及一种可避免粉尘压入带钢的吹扫装置。The utility model belongs to the field of steel rolling machinery and equipment, in particular to a purging device which can prevent dust from being pressed into strip steel.
背景技术Background technique
热轧带钢生产过程中，在精轧机组末机架较高的轧制速度、较高的轧制温度和多机架连轧状态下，通常会产生大量粉尘，这些粉尘与水汽混合后，在带钢上表面形成大颗粒油泥混合物，伴随轧制过程被带入下一机架轧机辊缝，从而压入带钢上表面，造成热轧带钢上表面异物压入、铬坑等质量缺陷。该缺陷对于冷轧品种，特别是在轧制厚度h＜0.5mm极薄规格时，一是极易产生孔洞缺陷，造成不必要的切废废品；二是严重的孔洞缺陷还会造成冷轧生产时轧机断带，影响轧机作业率。In the production process of hot-rolled strip steel, a large amount of dust is usually generated under the conditions of high rolling speed, high rolling temperature and multi-stand continuous rolling at the end of the finishing mill. A large particle sludge mixture is formed on the upper surface of the strip, and is brought into the roll gap of the next stand during the rolling process, thereby pressing into the upper surface of the strip, resulting in the intrusion of foreign matter on the upper surface of the hot-rolled strip, chrome pits and other quality defects . For cold-rolled varieties, especially when the rolling thickness h<0.5mm is extremely thin, firstly, hole defects are easily generated, resulting in unnecessary cutting waste; secondly, serious hole defects can also cause cold-rolling production. When the rolling mill is broken, the operation rate of the rolling mill is affected.
发明内容SUMMARY OF THE INVENTION
本实用新型提供一种可避免粉尘颗粒带入下一机架，被压入带钢造成带钢表面铬坑缺陷，从而减少废品损失的吹扫装置。The utility model provides a purging device which can prevent dust particles from being carried into the next frame and pressed into the strip steel to cause chrome pit defects on the surface of the strip steel, thereby reducing the loss of waste products.
为此，本实用新型所采取的技术解决方案为：For this reason, the technical solution adopted by the present utility model is:
一种避免粉尘压入带钢的吹扫装置，包括精轧机出口导卫和轧机传动侧压缩空气总管，增设金属软管、压缩空气集管、喷嘴及流量控制阀；在精轧机出口导卫上方安装压缩空气集管，压缩空气集管通过金属软管和流量控制阀连接轧机传动侧压缩空气总管，压缩空气集管上倾斜安装有扇形面吹扫喷嘴，喷嘴吹出的扇形面吹扫风朝向本架精轧机机架出口方向。A purging device for preventing dust from being pressed into strip steel, including a finishing mill outlet guide and a compressed air header on the drive side of the rolling mill, and additional metal hoses, compressed air headers, nozzles and flow control valves; above the finishing mill outlet guide Install the compressed air header. The compressed air header is connected to the compressed air header on the drive side of the rolling mill through metal hoses and flow control valves. The compressed air header is installed with fan-shaped purging nozzles obliquely. The exit direction of the finishing mill stands.
所述喷嘴与压缩空气集管之间的夹角为10°～20°。The included angle between the nozzle and the compressed air header is 10°˜20°.
所述喷嘴扇形面吹扫风的扇形面与竖直方向形成20°～30°的夹角。The fan-shaped surface of the blowing air on the fan-shaped surface of the nozzle forms an included angle of 20°˜30° with the vertical direction.
本实用新型的有益效果为：The beneficial effects of the present utility model are:
通过在机架间安置吹扫装置，使带钢上表面粉尘及异物得到有效吹扫，实现了精轧机架间的清洁生产，避免了机架间粉尘、异物压入带钢表面造成的铬坑缺陷，减少了废品损失，提高了带钢表面质量合格率。By arranging the purging device between the stands, the dust and foreign matter on the upper surface of the strip can be effectively purged, the clean production between the finishing stands is realized, and the chrome pit caused by the dust and foreign matter pressing into the surface of the strip between the stands is avoided. Defects, reduce waste loss, and improve the qualified rate of strip surface quality.
附图说明Description of drawings
图1是吹扫装置示意图。Figure 1 is a schematic diagram of a purging device.
图中：精轧机出口导卫1、压缩空气集管2、喷嘴3、金属软管4、流量控制阀5。In the figure: Finishing mill outlet guide 1, compressed
具体实施方式Detailed ways
由图1可见，本实用新型避免粉尘压入带钢的吹扫装置，包括精轧机出口导卫1、压缩空气集管2、喷嘴3、金属软管4、流量控制阀5和轧机传动侧压缩空气总管。在精轧机出口导卫1的上方安装压缩空气集管2，压缩空气集管2 通过金属软管4和流量控制阀5连接轧机传动侧压缩空气总管，压缩空气集管2 上倾斜安装有9个扇形面吹扫喷嘴3，喷嘴3采取等间距布置，各喷嘴3之间的间距为150mm。喷嘴3吹出的扇形面吹扫风朝向本架精轧机机架出口方向，喷嘴 3与压缩空气集管2之间的夹角为15°，喷嘴3扇形面吹扫风的扇形面与竖直方向形成25°的夹角，保证各个喷嘴3之间压缩空气气流互不干涉，确保压缩空气可以均匀对整个带钢宽度上表面全覆盖吹扫，避免上机架轧制产生的粉尘颗粒带入下一机架。It can be seen from Fig. 1 that the purging device of the present invention to prevent dust from being pressed into the strip includes a guide guard 1 at the outlet of the finishing mill, a
Claims (3)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922310237.0U CN211587981U (en) | 2019-12-20 | 2019-12-20 | Blowing device for preventing dust from being pressed into strip steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922310237.0U CN211587981U (en) | 2019-12-20 | 2019-12-20 | Blowing device for preventing dust from being pressed into strip steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211587981U true CN211587981U (en) | 2020-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922310237.0U Active CN211587981U (en) | 2019-12-20 | 2019-12-20 | Blowing device for preventing dust from being pressed into strip steel |
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- 2019-12-20 CN CN201922310237.0U patent/CN211587981U/en active Active
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