CN101700532A - Method and device for removing inner surface oxidized iron sheet of steel pipe on line - Google Patents
Method and device for removing inner surface oxidized iron sheet of steel pipe on line Download PDFInfo
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- CN101700532A CN101700532A CN200910227130A CN200910227130A CN101700532A CN 101700532 A CN101700532 A CN 101700532A CN 200910227130 A CN200910227130 A CN 200910227130A CN 200910227130 A CN200910227130 A CN 200910227130A CN 101700532 A CN101700532 A CN 101700532A
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Abstract
The invention relates to a method and a device for removing an inner surface oxidized iron sheet of a steel pipe on line. A device for removing an inner surface oxidized iron sheet of a steel pipe from the tail of the steel pipe is arranged behind a stepping type reheating furnace, and the inlet section of a stepping type cooling bed is provided with a device for removing the inner surface oxidized iron sheet of the steel pipe from the head of the steel pipe. After the tail and the head of the steel pipe are detected by a hot metal detector, the device for removing the inner surface oxidized iron sheet of the steel pipe from the tail of the steel pipe sprays high-pressure water to an inner hole of the tail of the steel pipe and removes the oxidized iron sheet of the inner hole of the steel pipe, and the device for removing the inner surface oxidized iron sheet of the steel pipe from the head of the steel pipe sprays high-pressure water and a high-pressure gas to the inner hole of the head of the steel pipe so as to remove oxidized slag retained in the inner hole of the steel pipe. The inner surface oxidized iron sheet of the steel pipe is removed on line behind the stepping type reheating furnace and at the inlet section of the stepping type cooling bed, and the finishing procedure of the rear part of the steel pipe is reduced. The invention not only saves the cost of acid washing, shot blasting and grinding but also improves the production efficiency.
Description
Technical field
The present invention relates to a kind of sweep-out method and device of sweep-out method and device, particularly a kind of inner surface oxidized iron sheet of steel pipe on line of steel pipe internal-surface iron scale.
Background technology
Development along with the steel pipe industry, the user requires more and more higher to tube quality, particularly high pan pipe, the user proposes to remove epoxy iron sheet in the steel pipe, the purpose one of removing epoxy iron sheet in the steel pipe is to prevent that in order to check the steel pipe internal-surface quality, to the more important thing is interior iron scale from peeling off the back blocking pipeline.The method of epoxy iron sheet is to adopt the pickling of steel pipe off-line, ball blast, inner surface reconditioning in the existing removing steel pipe.And inner surface reconditioning, the relative steel pipe internal-surface of ball blast are very difficult, and efficient is also very low, and often class of an equipment can only reconditioning 3～5, in the steel pipe's production that so not only the extended cycle, has increased the steel pipe's production cost again; Adopt the interior epoxy iron sheet effect of method removing steel pipe of pickling also not good, and the peracid corrosion phenomenon is arranged, influential to pipe quality.
Summary of the invention
The sweep-out method and the device that the objective of the invention is to overcome the above-mentioned deficiency of prior art and a kind of inner surface oxidized iron sheet of steel pipe on line is provided.
Technical scheme of the present invention is: a kind of sweep-out method of inner surface oxidized iron sheet of steel pipe on line, it is to have designed and produced a spraying-water dolly that water injector is housed between furnace delivery table the 3rd roller-way between step-by-step movement reheating furnace and the high-pressure water descaling case and the 4th roller-way, spraying-water dolly is by dolly push cylinder control operation, nozzle on the spraying-water dolly is by the control of high-pressure pneumatic stop valve, after the steel pipe afterbody is detected by hot metal detector, the spraying-water dolly operation, the high-pressure pneumatic stop valve is opened, nozzle sprays into the water under high pressure of certain flow to steel pipe afterbody endoporus, after spraying-water dolly is followed that steel pipe moves a segment distance and is prolonged water spraying time by the PLC programme-control, the spraying-water dolly water spray stops, automatically get back to the base position, wait for next root steel pipe.
In addition, set up the water injector and the air jet system of adjustment height at the inducer of walking beam cooler, when steel pipe is located on the flush arrival walking beam cooler three-flute by head, the pneumatic ball valve of pressure pipe is opened setting-out in steel pipe head endoporus sprays automatically automatically in the control, by PLC programme-control water spraying time, water spray finishes the back and waits for next root steel pipe.When steel pipe ran to the 4th groove, the air valve of control high-pressure air pipe was opened to steel pipe head endoporus spray compressed air, by PLC programme-control jet time, waits for next root steel pipe after the jet end.
The concrete process route that inner surface oxidized iron sheet of steel pipe on line is removed is:
A, steel pipe are by the heating of step-by-step movement reheating furnace, heating-up temperature 900-1000 ℃;
B, steel pipe comes out by descaling device outer surface of steel tube to be carried out high-pressure water descaling on furnace delivery table from the step-by-step movement reheating furnace, detect steel pipe afterbody by hot metal detector this moment, when metal detector detects the steel pipe afterbody, nozzle on the spraying-water dolly stretches out the endoporus spray water under high pressure of aiming at the steel pipe afterbody, spraying-water dolly advances with steel pipe on one side under the control of dolly push cylinder and sprays water under high pressure on one side, the spraying-water dolly water spray of also will delaying time after putting in place that advances, delayed water-spraying time S=4.3s, after the time-delay water spray stops, spraying-water dolly retreats and puts in place, next root steel pipe is waited in nozzle withdrawal on the spraying-water dolly at this moment;
C, steel pipe surfaces externally and internally pass through two frame sizing mill tube reducings after removing iron scale and de-scaling through water under high pressure, behind the tube reducing by subtracting back roller-way, walking beam cooler front roller-way, after the head of steel pipe is detected by hot metal detector, steel pipe is carried out the head location on the walking beam cooler front roller-way, be transplanted on the walking beam cooler by the rotation transfer device then;
D, when steel pipe runs to three-flute on the walking beam cooler fixed tooth plate, by the energising of PLC control pneumatic ball valve, pneumatic ball valve is opened, middle pressure pipe is aimed at the steel pipe head endoporus water spray of head location, water spraying time S=5s, hydraulic pressure P=8-12kg/cm
2
E, when steel pipe runs to the 4th groove on the walking beam cooler fixed tooth plate, by the energising of PLC control air valve, air valve is opened, it is jet that high-pressure air pipe is aimed at the steel pipe head endoporus of head location, whiff pressure P=4kg/cm
2, time S=6s removes the oxidizing slag that remains in steel tube inner hole.
F, steel pipe through compressed air remove remain in the oxidizing slag of steel tube inner hole after, continue to run until roller-way behind the walking beam cooler by walking beam cooler, arrive straightener then.
When pipe diameter during greater than 150mm, the nozzle on the spraying-water dolly with setting-out in the big flow and in the setting-out nozzle steel pipe internal-surface is carried out online oxidation iron sheet, the hydraulic pressure P=8-12kg/cm of removing
2When pipe diameter during less than 150mm, the nozzle on the spraying-water dolly carries out online oxidation iron sheet, the hydraulic pressure P=140kg/cm of removing with low discharge water under high pressure and hydraulic spray to steel pipe internal-surface
2
The present invention also provides a device and a device of removing the steel pipe internal-surface iron scale from the steel pipe head of removing the steel pipe internal-surface iron scale from the steel pipe afterbody.
The device of removing the steel pipe internal-surface iron scale from the steel pipe afterbody is arranged on step-by-step movement reheating furnace back, and it comprises operating desk, Hydraulic Station, water control system, hot metal detector and spraying-water dolly.On the roller-way stand between No. 3 roller and No. 4 roller, be fixed with a base plate, be provided with two light rails on base plate, spraying-water dolly just is located on two light rails, and the spraying-water dolly design has four wheels, driven by the dolly push cylinder, spraying-water dolly can be along the steel pipe operation of walking the wire.
Spraying-water dolly is provided with shower nozzle, and shower nozzle is driven and moved by the shower nozzle telescopic oil cylinder.After the steel pipe afterbody was detected by hot metal detector, Hydraulic Station was started working, the flexible reversal valve b1 energising of shower nozzle, and the shower nozzle on the spraying-water dolly stretches out, the servo-actuated of the spraying-water dolly of a2 energising after this, b2 energising spraying-water dolly is return, the withdrawal of a1 energising shower nozzle.After the spraying-water dolly shower nozzle stretched out, the nozzle water system was started working, and the high-pressure pneumatic stop valve is open-minded, nozzle ejection water under high pressure, and water spraying time is controlled by PLC.
Be arranged on the inducer of walking beam cooler from the device of steel pipe head removing steel pipe internal-surface iron scale, it comprises the middle pressure pipe of operating desk, band shower nozzle, high-pressure air pipe, gas-accumulating tank, pneumatic ball valve, air valve, hot metal detector and the support of band shower nozzle, high-pressure water pipe and high-pressure air pipe are fixed on the support, its adjustable height.The water source of high-pressure water pipe is controlled by pneumatic ball valve, high-pressure air pipe is controlled by steam valve, after the steel pipe head is detected by thermometal, steel pipe is carried out the head location on the walking beam cooler front roller-way, when the steel pipe on the walking beam cooler ran to the 3rd tooth on the walking beam cooler fixed tooth plate, by the energising of PLC control pneumatic ball valve, pneumatic ball valve was opened, middle pressure pipe is aimed at the steel pipe head endoporus water spray of head location, and water spraying time is controlled by PLC.When the steel pipe on the walking beam cooler ran to the 4th tooth on the walking beam cooler fixed tooth plate, by the energising of PLC control air valve, air valve was opened, and it is jet that high-pressure air pipe is aimed at the steel pipe head endoporus of head location, removes the oxidizing slag that remains in steel tube inner hole.
The present invention compared with prior art has following characteristics:
At present, the steel pipe that needs inner surface to remove the oxidation iron sheet all be by carried out pickling or inner surface reconditioning behind the steel pipe off-line, ball blast is handled.The sweep-out method of inner surface oxidized iron sheet of steel pipe on line provided by the invention, make steel pipe can behind the step-by-step movement reheating furnace, reach the online inner surface oxidized iron sheet of removing of walking beam cooler inducer, reduced steel pipe rear portion finishing procedure, not only saved the cost of pickling, ball blast, reconditioning but also improved production efficiency.
Below in conjunction with the drawings and specific embodiments the present invention is further described.
Description of drawings
Accompanying drawing 1 is this figure of technology arrangement that removes the steel pipe internal-surface iron scale from the steel pipe afterbody, and the direction of arrow is the steel pipe traffic direction among the figure;
Accompanying drawing 2 is the technology arrangement figure that removes the steel pipe internal-surface iron scale from the steel pipe head;
Accompanying drawing 3 is the dolly floor plan;
Accompanying drawing 4 is the vertical view of accompanying drawing 3;
Accompanying drawing 5 is the dolly hydraulic schematic diagram.
The specific embodiment
As shown in drawings, a kind of sweep-out method of inner surface oxidized iron sheet of steel pipe on line, it is to have designed and produced a spraying-water dolly 1 that water injector is housed between furnace delivery table the 3rd roller-way between step-by-step movement reheating furnace 9 and the high-pressure water descaling case 8 and the 4th roller-way, spraying-water dolly 1 is by dolly push cylinder 1-3 control operation, nozzle 1-1 is by the control of high-pressure pneumatic stop valve, after the steel pipe afterbody is detected by hot metal detector 4, spraying-water dolly 1 operation, the high-pressure pneumatic stop valve is opened, nozzle 1-1 on the spraying-water dolly 1 sprays into the water under high pressure of certain flow to steel pipe afterbody endoporus, after spraying-water dolly 1 is followed that steel pipe moves a segment distance and is prolonged water spraying time by the PLC programme-control, spraying-water dolly 1 water spray stops, automatically get back to the base position, wait for next root steel pipe.
In addition, set up the water injector and the air jet system of adjustment height at the inducer of walking beam cooler 20, when steel pipe is located on the three-flute of flush arrival walking beam cooler 20 by head, the pneumatic ball valve 12 of control water spray is opened setting-out in the automatic spray of steel pipe inwall automatically, by PLC programme-control water spraying time, water spray is waited for next root steel pipe after finishing.When steel pipe ran to the 4th groove, the air valve 13 of control air jet system was opened to steel tube inner hole spray compressed air.By PLC programme-control jet time, after the jet end, wait for next root steel pipe.
The concrete process route that inner surface oxidized iron sheet of steel pipe on line is removed is:
A, steel pipe are by 9 heating of step-by-step movement reheating furnace, heating-up temperature 900-1000 ℃;
B, steel pipe comes out to carry out high-pressure water descaling by 8 pairs of outer surface of steel tube of descaling device on furnace delivery table from step-by-step movement reheating furnace 9, detect steel pipe afterbody by hot metal detector 4 this moment, when metal detector 4 detects the steel pipe afterbody, nozzle 1-1 on the spraying-water dolly 1 stretches out the endoporus spray water under high pressure of aiming at the steel pipe afterbody, spraying-water dolly 1 advances with steel pipe on one side under dolly push cylinder 1-3 control and sprays water under high pressure on one side, spraying-water dolly 1 water spray of also will delaying time after putting in place that advances, delayed water-spraying time S=4.3s, after the time-delay water spray stops, spraying-water dolly 1 retreats and puts in place, next root steel pipe is waited in nozzle 1-1 withdrawal on the dolly 1 at this moment;
C, steel pipe surfaces externally and internally pass through two frame sizing mill tube reducings after removing iron scale and de-scaling through water under high pressure, behind the tube reducing by subtracting back roller-way, walking beam cooler front roller-way 18, after the steel pipe head is detected by hot metal detector 17, steel pipe is carried out the head location on walking beam cooler front roller-way 18, be transplanted on the walking beam cooler 20 by rotation transfer device 19 then;
D, when steel pipe runs to three-flute on walking beam cooler 20 fixed tooth plates, by 12 energisings of PLC control pneumatic ball valve, pneumatic ball valve 12 is opened, middle pressure pipe 15 is aimed at the steel pipe head endoporus water spray of heads location, water spraying time S=5s, hydraulic pressure P=8-12kg/cm
2
E, when the steel pipe on the walking beam cooler 20 runs to the 4th groove on walking beam cooler 20 fixed tooth plates, by 13 energisings of PLC control air valve, air valve 13 is opened, it is jet that high-pressure air pipe 10 is aimed at the steel pipe head endoporus of head location, whiff pressure P=4kg/cm
2, time S=6s removes the oxidizing slag that remains in steel tube inner hole.
F, steel pipe through compressed air remove remain in the oxidizing slag of steel tube inner hole after, continue to run until roller-way behind the cold bed by walking beam cooler 20, arrive straightener then.
When pipe diameter during greater than 150mm, the nozzle 1-1 on the spraying-water dolly 1 with setting-out in the big flow and in the setting-out nozzle steel pipe internal-surface is carried out online oxidation iron sheet, the hydraulic pressure P=8-12kg/cm of removing
2When pipe diameter during less than 150mm, the nozzle 1-1 on the spraying-water dolly 1 carries out online oxidation iron sheet, the hydraulic pressure P=140kg/cm of removing with low discharge water under high pressure and hydraulic spray to steel pipe internal-surface
2
The device of removing the steel pipe internal-surface iron scale from the steel pipe afterbody is arranged on the back of step-by-step movement reheating furnace 9, and it comprises operating desk 5, Hydraulic Station 2, water control system 3, hot metal detector 4 and spraying-water dolly 1.Be fixed with a base plate 1-4 on the roller-way stand between No. 3 roller after step-by-step movement reheating furnace 9 is come out of the stove and No. 4 roller, the long 1100mm of base plate 1-4, wide 1600mm, thick 30mm, on base plate 1-4, be provided with two light rail 1-5, the long 1600mm of light rail 1-5, spacing is 940mm, spraying-water dolly 1 just is located on two light rail 1-5, spraying-water dolly 1 design has four wheel 1-6, driven by dolly push cylinder 1-3, spraying-water dolly 1 can be along steel pipe 6 operations of walking the wire, range ability 600mm.
Spraying-water dolly 1 is provided with shower nozzle 1-1, and shower nozzle 1-1 is driven and moved by shower nozzle telescopic oil cylinder 1-2.After the steel pipe afterbody was detected by hot metal detector 4, Hydraulic Station 2 was started working, the flexible reversal valve b1 energising of shower nozzle, and the shower nozzle 1-1 on the spraying-water dolly 1 stretches out, 1 servo-actuated of the spraying-water dolly of a2 energising after this, b2 energising spraying-water dolly 1 is return, a1 energising shower nozzle 1-1 withdrawal.After the shower nozzle 1-1 on the spraying-water dolly 1 stretched out, water control system 3 was started working, and the high-pressure pneumatic stop valve is open-minded, and nozzle 1-1 sprays water under high pressure, and water spraying time is controlled by PLC.
Spraying-water dolly 1 course of action is as shown in table 1
Table 1
(annotate: "-" dead electricity in the table, "+")
Be arranged on the inducer of walking beam cooler 20 from the device of steel pipe head removing steel pipe internal-surface iron scale, it comprises the middle pressure pipe 15 of operating desk 16, band shower nozzle, high-pressure air pipe 10, gas-accumulating tank 11, pneumatic ball valve 12, air valve 13, hot metal detector 17 and the support 14 of band shower nozzle, middle pressure pipe 15 and high-pressure air pipe 10 are fixed on the support 14 its adjustable height.The water source of middle pressure pipe 15 is by pneumatic ball valve 12 controls, high-pressure air pipe 10 is by steam valve 13 controls, when the steel pipe head before cold bed, detected by thermometal on the approach table 18 17 detect after, steel pipe is carried out the head location on the approach table 18 before cold bed, be transplanted on the walking beam cooler 20 by rotation transfer device 19 then, when the steel pipe on the walking beam cooler 20 runs to the 3rd tooth on the cold bed fixed tooth plate, by 12 energisings of PLC control pneumatic ball valve, pneumatic ball valve 12 is opened, middle pressure pipe 15 is aimed at the steel pipe head endoporus water spray that heads are had good positioning, and water spraying time is controlled to be 5s by PLC.When the steel pipe on the walking beam cooler 20 ran to the 4th tooth on the cold bed fixed tooth plate, by 13 energisings of PLC control air valve, air valve 13 was opened, and it is jet that high-pressure air pipe 10 is aimed at the steel pipe head endoporus of head location, removes the oxidizing slag that remains in steel tube inner hole.
Claims (3)
1. the sweep-out method of an inner surface oxidized iron sheet of steel pipe on line, it is characterized in that: it is to have designed and produced a spraying-water dolly that water injector is housed between furnace delivery table the 3rd roller-way between step-by-step movement reheating furnace and the high-pressure water descaling case and the 4th roller-way, spraying-water dolly is by hydraulic jack control operation, nozzle on the spraying-water dolly is by the control of high-pressure pneumatic stop valve, after the steel pipe afterbody is detected by hot metal detector, the spraying-water dolly operation, the high-pressure pneumatic stop valve is opened, nozzle sprays into the water under high pressure of certain flow to steel pipe afterbody endoporus, after spraying-water dolly is followed that steel pipe moves a segment distance and is prolonged water spraying time by the PLC programme-control, the spraying-water dolly water spray stops, automatically get back to the base position, wait for next root steel pipe;
In addition, set up the water injector and the air jet system of adjustment height at the inducer of walking beam cooler, when steel pipe is located on the flush arrival walking beam cooler three-flute by head, the pneumatic ball valve of control water spout is opened setting-out in the steel pipe inwall sprays automatically automatically, after PLC programme-control prolongation water spraying time, wait for next root steel pipe; When steel pipe ran to the 4th groove, the air valve of control air jet system was opened to steel tube inner hole spray compressed air; After PLC programme-control prolongation water spraying time, wait for next root steel pipe;
The concrete process route that inner surface oxidized iron sheet of steel pipe on line is removed is:
A, steel pipe are by the heating of step-by-step movement reheating furnace, heating-up temperature 900-1000 ℃;
B, steel pipe comes out by descaling device outer surface of steel tube to be carried out high-pressure water descaling on furnace delivery table from the step-by-step movement reheating furnace, detect steel pipe afterbody by hot metal detector this moment, when metal detector detects the steel pipe afterbody, nozzle on the spraying-water dolly stretches out the endoporus spray water under high pressure of aiming at the steel pipe afterbody, spraying-water dolly advances with steel pipe on one side under the control of dolly push cylinder and sprays water under high pressure on one side, the spraying-water dolly water spray of also will delaying time after putting in place that advances, delayed water-spraying time S=4.3s, after the time-delay water spray stops, spraying-water dolly retreats and puts in place, next root steel pipe is waited in nozzle withdrawal on the spraying-water dolly;
C, steel pipe surfaces externally and internally pass through two frame sizing mill tube reducings after removing oxidation iron sheet and de-scaling through water under high pressure, behind the tube reducing by subtracting back roller-way, walking beam cooler front roller-way, after the steel pipe head is detected by hot metal detector, steel pipe is carried out the head location on the walking beam cooler front roller-way, be transplanted on the walking beam cooler by walking beam cooler rotation transfer device then;
D, when steel pipe runs to three-flute on the walking beam cooler fixed tooth plate, by the energising of PLC control pneumatic ball valve, pneumatic ball valve is opened, middle pressure pipe is aimed at the steel pipe head endoporus water spray of head location, water spraying time S=5s, hydraulic pressure P=8-12kg/cm
2
E, when the steel pipe on the walking beam cooler runs to the 4th groove on the walking beam cooler fixed tooth plate, by the energising of PLC control air valve, air valve is opened, it is jet that high-pressure air pipe is aimed at the steel pipe head endoporus of head location, whiff pressure P=4kg/cm
2, time S=6s removes the oxidizing slag that remains in steel tube inner hole.
F, steel pipe through compressed air remove remain in the oxidizing slag of steel tube inner hole after, continue to run until roller-way behind the walking beam cooler by walking beam cooler, arrive straightener then.
2. the sweep-out method of a kind of inner surface oxidized iron sheet of steel pipe on line according to claim 1, it is characterized in that: when pipe diameter during greater than 150mm, nozzle on the spraying-water dolly carries out online oxidation iron sheet, the hydraulic pressure P=8-12kg/cm of removing with setting-out in the big flow and middle setting-out nozzle to steel pipe internal-surface
2When pipe diameter during less than 150mm, the nozzle on the spraying-water dolly carries out online oxidation iron sheet, the hydraulic pressure P=140kg/cm of removing with low discharge water under high pressure and hydraulic spray to steel pipe internal-surface
2
3. the scavenge unit of an inner surface oxidized iron sheet of steel pipe on line is characterized in that: it comprises a device and a device of removing the steel pipe internal-surface iron scale from the steel pipe head of removing the steel pipe internal-surface iron scale from the steel pipe afterbody;
The device of removing the steel pipe internal-surface iron scale from the steel pipe afterbody is arranged on step-by-step movement reheating furnace back, it comprises operating desk, Hydraulic Station, water control system, hot metal detector and spraying-water dolly, on coming out of the stove roller-way stand between No. 3 roller and No. 4 roller, the step-by-step movement reheating furnace is fixed with a base plate, on base plate, be provided with two light rails, spraying-water dolly just is located on two light rails, the spraying-water dolly design has four wheels, driven by the dolly push cylinder, spraying-water dolly can be along the steel pipe operation of walking the wire; Spraying-water dolly is provided with shower nozzle, and shower nozzle is driven and moved by the shower nozzle telescopic oil cylinder, after the steel pipe afterbody is detected by hot metal detector, Hydraulic Station is started working, the flexible reversal valve b1 energising of shower nozzle, and the spraying-water dolly shower nozzle stretches out, after this servo-actuated of a2 energising spraying-water dolly, b2 energising spraying-water dolly is return, and the withdrawal of a1 energising shower nozzle is after the shower nozzle on the spraying-water dolly stretches out, the nozzle water system is started working, the high-pressure pneumatic stop valve is open-minded, nozzle ejection water under high pressure, and water spraying time is controlled by PLC;
Be arranged on the inducer of walking beam cooler from the device of steel pipe head removing steel pipe internal-surface iron scale, it comprises the middle pressure pipe of operating desk, band shower nozzle, high-pressure air pipe, gas-accumulating tank, pneumatic ball valve, air valve, hot metal detector and the support of band shower nozzle, middle pressure pipe and high-pressure air pipe are fixed on the support its adjustable height; The water source of middle pressure pipe is controlled by pneumatic ball valve, high-pressure air pipe is controlled by steam valve, after the steel pipe head is detected by thermometal, steel pipe is carried out the head location on the walking beam cooler front roller-way, when the steel pipe on the walking beam cooler runs to the 3rd tooth on the cold bed fixed tooth plate, by the energising of PLC control pneumatic ball valve, pneumatic ball valve is opened, high-pressure water pipe is aimed at the steel pipe head endoporus water spray of head location, water spraying time is controlled by PLC, when the steel pipe on the walking beam cooler runs to the 4th tooth on the cold bed fixed tooth plate, by the energising of PLC control air valve, air valve is opened, and it is jet that high-pressure air pipe is aimed at the steel pipe head endoporus of head location, removes the oxidizing slag that remains in steel tube inner hole.
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|---|---|---|---|
| CN200910227130.8A CN101700532B (en) | 2009-11-25 | 2009-11-25 | Method and device for removing inner surface oxidized iron sheet of steel pipe on line |
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| CN200910227130.8A CN101700532B (en) | 2009-11-25 | 2009-11-25 | Method and device for removing inner surface oxidized iron sheet of steel pipe on line |
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| CN102962270A (en) * | 2012-10-30 | 2013-03-13 | 鞍钢股份有限公司 | Method for improving anti-interference performance of descaling box |
| CN103184464A (en) * | 2013-04-08 | 2013-07-03 | 山西太钢不锈钢股份有限公司 | Method for removing acid-washing gas of small-inner-diameter stainless steel seamless pipes |
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| CN111151586A (en) * | 2020-01-08 | 2020-05-15 | 郭连国 | Water spray structure for removing oxide iron sheet for steel pipe hot rolling production equipment |
| CN113510154A (en) * | 2021-05-07 | 2021-10-19 | 中冶东方工程技术有限公司 | Online cold descaling process production line |
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| CN103415358A (en) * | 2011-05-16 | 2013-11-27 | 新日铁住金工程技术株式会社 | Rolling mill roll-cleaning device and cleaning method |
| US9433986B2 (en) | 2011-05-16 | 2016-09-06 | Nippon Steel & Sumikin Engineering Co., Ltd. | Rolling mill roll-cleaning device and cleaning method |
| CN102962270A (en) * | 2012-10-30 | 2013-03-13 | 鞍钢股份有限公司 | Method for improving anti-interference performance of descaling box |
| CN102962270B (en) * | 2012-10-30 | 2014-10-08 | 鞍钢股份有限公司 | Method for improving anti-interference performance of descaling box |
| CN103184464A (en) * | 2013-04-08 | 2013-07-03 | 山西太钢不锈钢股份有限公司 | Method for removing acid-washing gas of small-inner-diameter stainless steel seamless pipes |
| CN111151586A (en) * | 2020-01-08 | 2020-05-15 | 郭连国 | Water spray structure for removing oxide iron sheet for steel pipe hot rolling production equipment |
| CN113510154A (en) * | 2021-05-07 | 2021-10-19 | 中冶东方工程技术有限公司 | Online cold descaling process production line |
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