CN201120405Y - Compressed air descaling device - Google Patents
Compressed air descaling device Download PDFInfo
- Publication number
- CN201120405Y CN201120405Y CNU2007202011650U CN200720201165U CN201120405Y CN 201120405 Y CN201120405 Y CN 201120405Y CN U2007202011650 U CNU2007202011650 U CN U2007202011650U CN 200720201165 U CN200720201165 U CN 200720201165U CN 201120405 Y CN201120405 Y CN 201120405Y
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- CN
- China
- Prior art keywords
- compressed
- air
- compressed air
- scaling
- rail
- 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.)
- Expired - Fee Related
Links
- 238000005096 rolling process Methods 0.000 claims abstract description 38
- 238000003801 milling Methods 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 34
- 229910052742 iron Inorganic materials 0.000 abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 14
- 238000000034 method Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000008929 regeneration Effects 0.000 abstract 1
- 238000011069 regeneration method Methods 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 description 9
- 238000007254 oxidation reaction Methods 0.000 description 9
- 230000001172 regenerating effect Effects 0.000 description 9
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
Landscapes
- Metal Rolling (AREA)
- Cleaning In General (AREA)
Abstract
The utility model discloses a compressed air descaling device sets up on rolling piece transfer chain (5) before the well rolling mill group entry, and high pressurized air passes through high-pressurepipe (1) and two at least descaling box intercommunications, and descaling box sets up the face side of waiting to descale the rolling piece, is provided with a compressed air nozzle group on every descaling box, and compressed air nozzle group comprises two at least compressed air nozzle (2). The utility model discloses a compressed air descaling device also can set up before the finish rolling unit entry, utilizes compressed air as the medium of descaling, gets rid of and rolls in and the regeneration iron scale that produces with the finish rolling in-process to adopt suitable nozzle arrangement mode, in order to reach the full section descaling to the rolled piece, improve rolled piece surface quality. The utility model provides a current high pressure water descaling device can't make the rail reach the technical problem that high speed railway used rail surface quality required, mainly be applied to on the rolling production line of high speed railway used rail.
Description
Technical field
The utility model relates to the rolled piece surface processing device in the iron and steel metallurgical industry, especially a kind of compressed air descaling device.
Background technology
In the steel rail rolling production process, become the operation of rail many from billet rolling, it is long that rolled piece is exposed to the airborne time, all can produce iron scale in each rolling process.These iron scales not only can influence the surface quality of the rail that finally is rolled into, and also can cause the unnecessary wearing and tearing of breaker roll, influence the service life of roll.Therefore, in the operation of rolling of rail, rail generally is horizontal and is placed on the roller bed conveying line, employing is sprayed water with high pressure rolled piece is carried out surperficial de-scaling processing, promptly supply with water under high pressure by the collector and the nozzle on the collector of high-pressure hydraulic pump in the De-scaling box that is arranged in the rolled piece side, by adjusting the jet angle and the jet length of nozzle, make the water under high pressure a fluid stream of ejection cover the rolled piece surface comprehensively, rolled piece moves along rolling direction, and descaling device is opened water under high pressure a period of time as required, by the mechanical impact force of High-Pressure Water, just removed the regenerating oxidation iron sheet that forms in the nascent iron scale that rolled piece produces and the operation of rolling in the heating and the operation of rolling.But, when rolling used for high-speed railway rail, because the used for high-speed railway steel rail rolling often, behind the split rolling method, when roughing, want back and forth rolling three passages, in roll a time, finish rolling a time each rollingly nearly all will produce the regenerating oxidation iron sheet, do not adopt descaling device then surface quality do not reach requirement, adopt high pressure water descaling device then in the finish rolling process of back, can produce adverse influence the temperature of rolled piece.Therefore, existing high pressure water descaling device can't make the surface quality of rail reach the requirement of used for high-speed railway rail.
The utility model content
Can't make rail reach the deficiency of used for high-speed railway track surface quality requirement in order to overcome existing high pressure water descaling device, technical problem to be solved in the utility model provides a kind of compressed air descaling device, when this device can carry out de-scaling at the rail to the rolling later stage, reduce because the adverse effect that temperature drop brings rail quality as far as possible.
The technical scheme that its technical problem that solves the utility model adopts is: the compressed air descaling device, be arranged on the preceding rolled piece pipeline of milling train group inlet, high-pressure air source is communicated with at least two De-scaling boxs by high-pressure air pipe, De-scaling box be arranged on treat the de-scaling rolled piece wait to remove the plaited surface side, each De-scaling box is provided with a compressed-air atomizer group, and the compressed-air atomizer group is made up of at least two compressed-air atomizers.
The beneficial effects of the utility model are: remove the iron scale of blank heating generation and the regenerating oxidation iron sheet in the operation of rolling with the conventional high pressure water descaling device of the rolling preceding employing of omnipotent first passage before split rolling method, before middle milling train group and mm finishing mill unit, adopt compressed air descaling device of the present utility model to remove the regenerating oxidation iron sheet that produces in the rolled piece operation of rolling, so both guaranteed the temperature requirement in the rolled piece operation of rolling, effectively improved used for high-speed railway rail surface quality again, made the rail that rolls out reach the quality requirement of used for high-speed railway rail best bright finish.
Description of drawings
Fig. 1 is the schematic diagram of compressed air descaling device.
Be labeled as among the figure, 1 is high-pressure air pipe, and 2 is compressed-air atomizer, and 3 is valve, and 4 is rail, and 5 is rollgang, and 6 is first De-scaling box, and 7 is second De-scaling box, and 8 is the 3rd De-scaling box, and 9 is slideway, and 10 is the bulb swivel joint, and 11 is air compressor, and A is an air.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
Compressed air descaling device of the present utility model, be arranged on the preceding rolled piece pipeline 5 of milling train group inlet, high-pressure air source is communicated with at least two De-scaling boxs by high-pressure air pipe 1, De-scaling box be arranged on treat the de-scaling rolled piece wait to remove the plaited surface side, each De-scaling box is provided with a compressed-air atomizer group, and the compressed-air atomizer group is made up of at least two compressed-air atomizers 2.
As shown in Figure 1, the compressed-air atomizer group is made up of at least two compressed-air atomizers 2, is arranged on the line, forms a compressed-air atomizer group, is arranged on the De-scaling box.
As shown in Figure 1, the compressed-air atomizer group of each De-scaling box is arranged on the face, and this face is vertical with the steel rail rolling direction, makes its compressed air stream of respectively organizing the compressed-air atomizer ejection to the rolled piece section maximum hitting power be arranged, and scale removal effect is best.
As shown in Figure 1, special section configuration at rail, three De-scaling boxs have been designed, be respectively first De-scaling box 6, second De-scaling box 7 and the 3rd De-scaling box 8, first De-scaling box 6 can be to the bottom de-scaling of rail, second De-scaling box 7 can purge to the head de-scaling of rail and to the upper surface of rail, remove the iron scale that is splashed to upper surface in the de-scaling process, the lower surface de-scaling of 8 pairs of rail webs of the rail of the 3rd De-scaling box, each De-scaling box adopts different nozzle quantities, and can be according to actual needs, select the different nozzle of hitting power for use, make its use try one's best few compressed-air atomizer but the compressed air stream of ejection can cover comprehensively rail treat reach the full face de-scaling requirement of rail on the de-scaling surface.
As shown in Figure 1, De-scaling box can be arranged on the slideway 9, and slideway 9 is arranged on the rolled piece pipeline 5 and is vertical with the rolled piece throughput direction.The convenient jet length of respectively organizing compressed-air atomizer of adjusting keeps nozzle to treat the hitting power that maximum is arranged except that plaited surface in same jet length simultaneously.
As shown in Figure 1, described compressed-air atomizer adopts bulb swivel joint 10 to be connected with 1 of high-pressure air pipe, it can be adjusted the inclination angle of each compressed-air atomizer after changing the rolled piece kind easily, and make compressed air stream can cover the full section of rolled piece.
Described compressed air descaling device carries out the compressed air de-scaling to the rolled piece before the finish rolling before also can being arranged on the mm finishing mill unit inlet.
Embodiment
The used for high-speed railway heavy rail generally adopts 60kg/m section rail, adopts 380mm * 280mm section continuous casting material during production.Compressed air descaling device of the present utility model be applied to this shaped steel rail rolling in roll with the finish rolling operation before, obtained good scale removal effect.
Before split rolling method, adopt traditional descaling device that steel billet is carried out conventional for the first time high-pressure water descaling, remove the iron scale that produces in the blank heating process.Before the laggard roughing unit of split rolling method, rolled piece is carried out conventional for the second time high-pressure water descaling, remove the regenerating oxidation iron sheet that produces in the split rolling method process, want back and forth rolling three passages, can select repeatedly high-pressure water descaling according to temperature conditions in the operation of rolling at roughing unit rolled piece.After roughing is finished, rolled piece in advancing before the milling train group regenerating oxidation iron sheet to rolled piece carry out the compressed air de-scaling, rolling a time, the regenerating oxidation iron sheet to rolled piece carries out the compressed air de-scaling once more before advancing mm finishing mill unit equally, has further improved the rolled piece surface quality.In roll with finish rolling before, the de-scaling medium is replaced with compressed air by water under high pressure, not only effectively remove the regenerating oxidation iron sheet, also guaranteed the rolled piece temperature, make rolled piece obtain higher surface quality.
As shown in Figure 1, air A forms compressed air behind air compressor 11, ventilate to high-pressure air pipe 1 through valve 3, compressed air descaling device of the present utility model, be arranged on milling train group and the mm finishing mill unit rolled piece pipeline 5 before, high-pressure air pipe 1 is communicated with three De-scaling boxs, and three De-scaling boxs are arranged on bottom, head and the web of the rail lower surface side of rail, each De-scaling box is provided with a compressed-air atomizer group, and the compressed-air atomizer group is made up of at least two compressed-air atomizers 2.
After the compressed air nozzle ejection of compressed air, form the high pressure gas a fluid stream, after touching the rail surface, promptly removed surperficial regenerating oxidation iron sheet, simultaneously, this kind compressed air descaling device has significantly the higher setting-out descaling device of the temperature effect of rail and reduces.
As shown in Figure 1, a plurality of compressed-air atomizers 2 are separately positioned on first De-scaling box 6, second De-scaling box 7 and the 3rd De-scaling box 8, the face at each compressed-air atomizer 2 place is vertical with rolling direction, first De-scaling box 6, second De-scaling box 7 and the 3rd De-scaling box 8 all are arranged on the slideway 9, and slideway 9 is arranged on the rolled piece pipeline 5 and is vertical with the rolled piece throughput direction.Each compressed-air atomizer 2 adopts bulb swivel joint 10 to be connected with 1 of high-pressure air pipe.
Adopt above-mentioned compressed air descaling device, can carry out de-scaling to the full section of rolled piece, and according to the needs after replacing rolled piece specification and the rolled piece kind, easily compressed-air atomizer inclination angle, jet angle and jet length are adjusted, used the best scale removal effect that the utility model can reach to reach.
Claims (7)
1. compressed air descaling device, be arranged on the preceding rolled piece pipeline (5) of milling train group inlet, it is characterized in that: high-pressure air source is communicated with at least two De-scaling boxs by high-pressure air pipe (1), De-scaling box be arranged on treat the de-scaling rolled piece wait to remove the plaited surface side, each De-scaling box is provided with a compressed-air atomizer group, and the compressed-air atomizer group is made up of at least two compressed-air atomizers (2).
2. compressed air descaling device as claimed in claim 1 is characterized in that: the compressed-air atomizer (2) of forming the compressed-air atomizer group is arranged point-blank.
3. compressed air descaling device as claimed in claim 2 is characterized in that: the compressed-air atomizer group of each De-scaling box is arranged on the face, and this face is vertical with rolling direction.
4. compressed air descaling device as claimed in claim 2, it is characterized in that: the described de-scaling rolled piece for the treatment of is rail (4), described De-scaling box has three, first De-scaling box (6) is arranged on the bottom side of rail, the head side that second De-scaling box (7) is arranged on rail, and the 3rd De-scaling box (8) is arranged on the web of the rail downside of rail.
5. compressed air descaling device as claimed in claim 4, it is characterized in that: the compressed-air atomizer group of first De-scaling box (6) has three compressed-air atomizers (2), the compressed-air atomizer group of second De-scaling box (7) has three compressed-air atomizers (2), and the compressed-air atomizer group of the 3rd De-scaling box (8) has four compressed-air atomizers (2).
6. compressed air descaling device as claimed in claim 1 or 2 is characterized in that: De-scaling box is arranged on the slideway (9), and it is last and vertical with the rolled piece throughput direction that slideway (9) is arranged on rolled piece pipeline (5).
7. compressed air descaling device as claimed in claim 1 is characterized in that: adopt bulb swivel joint (10) to be connected between described compressed-air atomizer (2) and the high-pressure air pipe (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007202011650U CN201120405Y (en) | 2007-10-17 | 2007-10-17 | Compressed air descaling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007202011650U CN201120405Y (en) | 2007-10-17 | 2007-10-17 | Compressed air descaling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201120405Y true CN201120405Y (en) | 2008-09-24 |
Family
ID=40007624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007202011650U Expired - Fee Related CN201120405Y (en) | 2007-10-17 | 2007-10-17 | Compressed air descaling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201120405Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102806238A (en) * | 2012-08-21 | 2012-12-05 | 莱芜钢铁集团有限公司 | Scale removal equipment and scale removal method |
-
2007
- 2007-10-17 CN CNU2007202011650U patent/CN201120405Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102806238A (en) * | 2012-08-21 | 2012-12-05 | 莱芜钢铁集团有限公司 | Scale removal equipment and scale removal method |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 617067 science and Technology Department, Pangang village, Xiangyang Village, East District, Panzhihua, Sichuan Patentee after: Pangang Group Steel Vanadium & Titanium Co., Ltd. Address before: 617067 science and Technology Department, Pangang village, Xiangyang Village, East District, Panzhihua, Sichuan Patentee before: Panzhihua New Steel & Vanadium Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080924 Termination date: 20151017 |
|
| EXPY | Termination of patent right or utility model |