CN102152243B - Nitrogen blowing and borax spraying antioxidant system for capillary tube inner wall of seamless steel pipe slant tube-rolling mill unit - Google Patents
Nitrogen blowing and borax spraying antioxidant system for capillary tube inner wall of seamless steel pipe slant tube-rolling mill unit Download PDFInfo
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- CN102152243B CN102152243B CN 201110003294 CN201110003294A CN102152243B CN 102152243 B CN102152243 B CN 102152243B CN 201110003294 CN201110003294 CN 201110003294 CN 201110003294 A CN201110003294 A CN 201110003294A CN 102152243 B CN102152243 B CN 102152243B
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- Prior art keywords
- capillary tube
- cylinder
- borax
- hollow billet
- nitrogen
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 51
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 26
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 20
- 235000010339 sodium tetraborate Nutrition 0.000 title claims abstract description 20
- 239000010959 steel Substances 0.000 title claims abstract description 20
- 238000007664 blowing Methods 0.000 title claims abstract description 19
- 229910021538 borax Inorganic materials 0.000 title claims abstract description 18
- 239000004328 sodium tetraborate Substances 0.000 title claims abstract description 18
- 239000003963 antioxidant agent Substances 0.000 title claims abstract description 12
- 230000003078 antioxidant effect Effects 0.000 title claims abstract description 12
- 238000009785 tube rolling Methods 0.000 title abstract description 4
- 238000005507 spraying Methods 0.000 title abstract 3
- 238000003860 storage Methods 0.000 claims abstract description 18
- 238000005096 rolling process Methods 0.000 claims description 18
- 239000000428 dust Substances 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 9
- 238000005303 weighing Methods 0.000 claims description 9
- 238000011010 flushing procedure Methods 0.000 claims description 8
- 238000011084 recovery Methods 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 4
- 239000012716 precipitator Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 230000003647 oxidation Effects 0.000 abstract description 2
- 238000007254 oxidation reaction Methods 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract 2
- 241000237503 Pectinidae Species 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 230000005611 electricity Effects 0.000 abstract 1
- 239000012528 membrane Substances 0.000 abstract 1
- 235000020637 scallop Nutrition 0.000 abstract 1
- 235000006708 antioxidants Nutrition 0.000 description 6
- 239000007921 spray Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000002950 deficient Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010622 cold drawing Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000011232 storage material Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention relates to a nitrogen blowing and borax spraying antioxidant system for a capillary tube inner wall of a seamless steel pipe slant tube-rolling mill unit. The nitrogen blowing and borax spraying antioxidant system consists of a blowing device, a capillary tube rotating device and a recycling and dust-removing device, wherein the blowing device is arranged at one end of the capillarytube rotating device; the recycling and dust-removing device is arranged at the other end of the capillary tube rotating device; and the blowing device comprises a material storage tank, a working tank and a spiral nozzle. The working process of the system is that: the punched capillary tube is moved to the capillary tube rotating device through a delivering device to rotate at a constant speed; and the blowing device blows the nitrogen and the borax into the capillary tube to remove oxide scales and fully inject nitrogen in the capillary tube so as to remove the residual oxide scales from the capillary tube, form a layer of membrane in inner surface of the capillary tube and prevent further oxidation of the capillary tube. The system has the advantages of: improving defects at the inner surface of the finished steel pipes, achieving effects of no pockmark, scallops, inner screw threads or layering phenomena, enlarging the application field of the steel pipes, prolonging the service life of working core rods, saving the steel materials used by the core rods, reducing the electricity consumption of a mandrel mill by 6 percent, and saving energy and reducing consumption.
Description
Technical field
The present invention relates to a kind of nitrogen flushing spray borax antioxidant system, especially a kind of seamless steel pipe diagonal rolling pipe mill group hollow billet inwall nitrogen flushing spray borax antioxidant system belongs to the tube rolling technical field.
Background technology
Pipe mill is that hot rolled seamless steel tube is produced the core distortion milling train in the unit, its Main Function is: by subtracting wall, extensional, improve surfaces externally and internally quality and the dimensional accuracy of pierced shell, obtain thinner, longer rolling hollow forging, go out the finished product seamless steel pipe by the sizing mill hot rolling at last.Diagonal rolling pipe mill (two rollers and two kinds of forms of three rollers are arranged) is one of main force's type of China's hot rolled seamless steel tube production at present, nationwide nearly over one hundred cover, and production capacity reaches ten million ton.The hollow billet inwall is not all done any processing in existing diagonal rolling pipe mill group, and iron scale is serious in the hollow billet.
If this kind hollow billet directly advances diagonal rolling pipe mill when rolling, can cause the fished pipe inner surface quality poor, the defectives such as serious internal thread, pockmark, pit, layering are arranged; Milling train work plug well damage, single rolling life-span of plug is 1000 steel pipes, production cost is high; Specific energy consumption is larger, is 0.90KWh/ (s.cm
3) to amount to a ton pipe unit consumption be 50KWh (referring to the diagonal rolling pipe mill power consumption).The poor seamless steel pipe of inner surface quality all can not use in a lot of fields, such as oil pipe, mesolow and high-pressure boiler tube, cold drawing accurate oil cylinder bobbin etc., cause the low waste that reaches steel (circular pipe blank) of product lumber recovery, do not reach energy-saving and cost-reducing purpose.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of seamless steel pipe diagonal rolling pipe mill group hollow billet inwall nitrogen flushing spray borax antioxidant system is provided, can improve the seamless steel pipe interior surface quality, and energy-saving and cost-reducing.
According to technical scheme provided by the invention, a kind of seamless steel pipe diagonal rolling pipe mill group hollow billet inwall nitrogen flushing spray borax antioxidant system, it is characterized in that: formed by blowing device, hollow billet whirligig and recovery dust arrester, end at the hollow billet whirligig is installed blowing device, installs at the other end of hollow billet whirligig and reclaims dust arrester;
Described blowing device comprises storage tank, work tank, spiral nozzle, compressed air reservoir, nitrogen storage tank, the first cylinder and the second cylinder; The discharging opening place of storage tank lower end is provided with vibrating feeder and weighing plate, is connected by feed pipe between weighing plate and the work tank, and the mouth of pipe place of feed pipe arranges the second bell, and the second bell is connected by pipeline with the second cylinder; The discharging opening place of work tank below arranges the mulling valve, is connected by pipeline between mulling valve and the spiral nozzle; Discharging opening place at described work tank arranges the first bell, is connected by pipeline between the first bell and the first cylinder; Compressed air reservoir is connected with the first cylinder, the second cylinder and the input of the 3rd reversal valve by pipeline respectively; On the pipeline between the first cylinder and compressed air reservoir, the second cylinder and the compressed air reservoir, the first reversal valve and the second reversal valve are set respectively, the first reversal valve is used for the UNICOM between control compressed air and the first cylinder, and the second reversal valve is used for the UNICOM between control compressed air and the second cylinder; Nitrogen storage tank is connected with spiral nozzle by the input of pipeline with mulling valve, the 3rd reversal valve respectively; The output of the 3rd reversal valve is connected with feed pipe;
Described hollow billet whirligig comprises support, return idler, active roller and main shaft; Return idler is rack-mount, and active roller is installed on the main shaft, and main shaft is connected with reducing motor.
Described recovery dust arrester is fiber bag precipitator.
Described vibrating feeder is servo vibrating feeder.
The invention has the beneficial effects as follows:
(1) improves the defective of fished pipe inner surface, reached without pockmark, pit, internal thread, lamination, enlarged the steel pipe application;
(2) improved service life of work plug, but 5000 of single plug tube rollings 5 times have been improved, have saved the employed steel of plug (high alloy special steel);
(3) a ton pipe power consumption has reduced by 6% and has been 47KWh (referring to the diagonal rolling pipe mill power consumption), and a ton pipe power consumption has reduced 3KWh, and by 1,000 ten thousand tons of calculating of China's diagonal rolling pipe mill production capacity, power consumption has reduced by 3,000 ten thousand degree altogether, has reached energy-saving and cost-reducing purpose.
Description of drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of blowing device.
Fig. 3 is the structural representation of hollow billet whirligig.
The specific embodiment
The invention will be further described below in conjunction with concrete accompanying drawing.
Such as Fig. 1～shown in Figure 3: the 1-blowing device, 2-hollow billet whirligig, 3-reclaims dust arrester, the 4-storage tank, the 5-work tank, 6-the first reversal valve, 7-the second reversal valve, 8-the 3rd reversal valve, 9-the first cylinder, 10-the second cylinder, the 11-compressed air reservoir, the 12-nitrogen storage tank, the servo vibrating feeder of 13-, the 14-weighing pan, the 15-feed pipe, 16-the first bell, 17-the second bell, 18-mulling valve, the 19-spiral nozzle, the 20-active roller, the 21-return idler, the 22-main shaft, the 23-support, the 24-hollow billet, the 25-punch, the 26-diagonal rolling pipe mill.
Hollow billet whirligig 2 is installed between punch 25 and diagonal rolling pipe mill 26 as shown in the figure, at an end of hollow billet whirligig 2 blowing device 1 is installed, install at the other end of hollow billet whirligig 2 and reclaim dust arrester 3;
Blowing device 1 comprises storage tank 4, work tank 5, spiral nozzle 19, compressed air reservoir 11 and nitrogen storage tank 12; The discharging opening place of storage tank 4 lower ends is provided with servo vibrating feeder 13 and weighing plate 14, is connected by feed pipe 15 between weighing plate 14 and the work tank 5, and the mouth of pipe place of feed pipe 15 arranges the second bell 17, the second bells 17 and is connected by pipeline with the second cylinder 10; The discharging opening place of work tank 5 belows arranges mulling valve 18, is connected by pipeline between mulling valve 18 and the spiral nozzle 19; Between arranging the first bell 16, the first bells 16 and the first cylinder 9, the discharging opening place of work tank 5 is connected by pipeline; Compressed air reservoir 11 is connected by the input of pipeline with the first cylinder 9, the second cylinder 10 and the 3rd reversal valve 8 respectively; On the pipeline between the first cylinder 9 and compressed air reservoir 11, the second cylinder 10 and the compressed air reservoir 11, the first reversal valve 6 and the second reversal valve 7 are set respectively, the UNICOM that the first reversal valve 6 is used between control compressed air and the first cylinder 9, the UNICOM that the second reversal valve 7 is used between control compressed air and the second cylinder 10; Nitrogen storage tank 12 is connected with spiral nozzle with the input of mulling valve 18, the 3rd reversal valve 8 by pipeline respectively and is connected; The output of the 3rd reversal valve 8 is connected with feed pipe 15;
Hollow billet whirligig 2 by support 23, be installed in the return idler 21 on the support 23 and the active roller 20 that is installed on the main shaft 22 forms; Main shaft 22 is connected with reducing motor.
Reclaiming dust arrester 3 is fiber bag precipitator, the fiber bag precipitator that adopts the logical environmental protection machinery Co., Ltd of Wuxi City sunlight to produce.
The course of work of the present invention: move to hollow billet whirligig 2 through transfer device through the good hollow billet 24 of punch 25 perforation, hollow billet whirligig 2 starts, hollow billet is between active roller 20 and return idler 21, under the drive of active roller 20, rotate with an even speed, blowing device 1 beginning blows to nitrogen and borax hollow billet 24 endoporus descalings and fill with nitrogen in hollow billet through spiral nozzle 19, its main function is that the residual oxide skin in the hollow billet is removed, inner surface at hollow billet forms a skim simultaneously, prevents the further oxidation of hollow billet; Control gas circuit of the present invention all adopts compressed air, and the mode by pressurization can solve anti-blocking problem.Storage tank 4 is used for the storage material, borax in the storage tank 4 is shaken to weighing pan 14 by servo vibrating feeder 13, finish the weight feed of borax, by the second reversal valve 7 the second cylinder 10 is moved downward, open simultaneously the second bell 17, enter work tank 5 through weighing pan 14 weighted boraxs through feed pipe 15, after the borax material enters work tank 5, the second bell 17 is about to feed pipe 15 and closes, and the nitrogen in the nitrogen storage tank 12 begin to add in work tank 5 and fill; When hollow billet 24 puts the needs winding-up in place, by the first reversal valve 6 the first cylinder 9 is moved downward again, open simultaneously the first bell 16, the boraxs in the work tank 5 flow into mulling valve 18 under the effect of pressurized nitrogen; While nitrogen is blowing borax and is entering hollow billet 24 through pipeline and spiral nozzle 19, is sprayed at equably hollow billet 24 inner wall surface.It is rolling that hollow billet 24 after the anti-oxidant treatment moves to diagonal rolling pipe mill 26.
Recovery dust arrester 3 in the native system can reclaim iron scale and borax and the flue gas of winding-up process.Hollow billet whirligig 2 in the native system can make hollow billet 24 rotate at the winding-up station, guarantees the winding-up of hollow billet 24 inwalls evenly.
Claims (3)
1. the borax antioxidant system is sprayed in a seamless steel pipe diagonal rolling pipe mill group hollow billet inwall nitrogen flushing, it is characterized in that: formed by blowing device (1), hollow billet whirligig (2) and recovery dust arrester (3), end at hollow billet whirligig (2) is installed blowing device (1), installs at the other end of hollow billet whirligig (2) and reclaims dust arrester (3);
Described blowing device (1) comprises storage tank (4), work tank (5), spiral nozzle (19), compressed air reservoir (11), nitrogen storage tank (12), the first cylinder (9) and the second cylinder (10); The discharging opening place of storage tank (4) lower end is provided with vibrating feeder (13) and weighing plate (14), be connected by feed pipe (15) between weighing plate (14) and the work tank (5), the mouth of pipe place of feed pipe (15) arranges the second bell (17), and the second bell (17) is connected by pipeline with the second cylinder (10); The discharging opening place of work tank (5) below arranges mulling valve (18), is connected by pipeline between mulling valve (18) and the spiral nozzle (19); At the discharging opening place of described work tank (5) the first bell (16) is set, is connected by pipeline between the first bell (16) and the first cylinder (9); Compressed air reservoir (11) is connected with the first cylinder (9), the second cylinder (10) and the input of the 3rd reversal valve (8) by pipeline respectively; On the pipeline between the first cylinder (9) and compressed air reservoir (11), the second cylinder (10) and the compressed air reservoir (11), the first reversal valve (6) and the second reversal valve (7) are set respectively; Nitrogen storage tank (12) is connected 19 with the input of mulling valve (18), the 3rd reversal valve (8) with spiral nozzle by pipeline respectively) be connected; The output of the 3rd reversal valve (8) is connected with feed pipe (15);
Described hollow billet whirligig (2) comprises support (23), return idler (21), active roller (20) and main shaft (22); Return idler (21) is installed on the support (23), and active roller (20) is installed on the main shaft (22), and main shaft (22) is connected with reducing motor.
2. the borax antioxidant system is sprayed in nitrogen flushing as claimed in claim 1, and it is characterized in that: described recovery dust arrester (3) is fiber bag precipitator.
3. the borax antioxidant system is sprayed in nitrogen flushing as claimed in claim 1, and it is characterized in that: described vibrating feeder (13) is servo vibrating feeder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110003294 CN102152243B (en) | 2011-01-10 | 2011-01-10 | Nitrogen blowing and borax spraying antioxidant system for capillary tube inner wall of seamless steel pipe slant tube-rolling mill unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110003294 CN102152243B (en) | 2011-01-10 | 2011-01-10 | Nitrogen blowing and borax spraying antioxidant system for capillary tube inner wall of seamless steel pipe slant tube-rolling mill unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102152243A CN102152243A (en) | 2011-08-17 |
| CN102152243B true CN102152243B (en) | 2013-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110003294 Active CN102152243B (en) | 2011-01-10 | 2011-01-10 | Nitrogen blowing and borax spraying antioxidant system for capillary tube inner wall of seamless steel pipe slant tube-rolling mill unit |
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| CN (1) | CN102152243B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112718868A (en) * | 2020-12-10 | 2021-04-30 | 太原重工股份有限公司 | System and process for eliminating pockmarks on inner surface of hot rotary expansion steel pipe |
| CN116900224A (en) * | 2023-06-26 | 2023-10-20 | 江西景航航空锻铸有限公司 | A kind of forging equipment and method for TC4 titanium alloy bar |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101395283A (en) * | 2006-03-02 | 2009-03-25 | 住友金属工业株式会社 | Steel pipe excellent in water vapor oxidation resistance and manufacturing method thereof |
| CN201455816U (en) * | 2009-08-25 | 2010-05-12 | 鞍钢股份有限公司 | Borax nozzle for an anti-oxidation system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10217123A (en) * | 1997-02-06 | 1998-08-18 | Sumitomo Metal Ind Ltd | Descaling method for steel pipe inner surface |
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2011
- 2011-01-10 CN CN 201110003294 patent/CN102152243B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101395283A (en) * | 2006-03-02 | 2009-03-25 | 住友金属工业株式会社 | Steel pipe excellent in water vapor oxidation resistance and manufacturing method thereof |
| CN201455816U (en) * | 2009-08-25 | 2010-05-12 | 鞍钢股份有限公司 | Borax nozzle for an anti-oxidation system |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平10-217123A 1998.08.18 |
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| CN102152243A (en) | 2011-08-17 |
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