CN102405114A - Method of producing seamless pipe and apparatus for performing the same - Google Patents
Method of producing seamless pipe and apparatus for performing the same Download PDFInfo
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- CN102405114A CN102405114A CN2010800174107A CN201080017410A CN102405114A CN 102405114 A CN102405114 A CN 102405114A CN 2010800174107 A CN2010800174107 A CN 2010800174107A CN 201080017410 A CN201080017410 A CN 201080017410A CN 102405114 A CN102405114 A CN 102405114A
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- 238000000034 method Methods 0.000 title description 10
- 238000005096 rolling process Methods 0.000 claims abstract description 97
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 58
- 238000009826 distribution Methods 0.000 claims abstract description 27
- 229910000831 Steel Inorganic materials 0.000 claims description 92
- 239000010959 steel Substances 0.000 claims description 92
- 238000004519 manufacturing process Methods 0.000 claims description 55
- 238000001816 cooling Methods 0.000 claims description 35
- 238000013459 approach Methods 0.000 claims description 22
- 238000010791 quenching Methods 0.000 claims description 20
- 238000002347 injection Methods 0.000 claims description 19
- 239000007924 injection Substances 0.000 claims description 19
- 238000005553 drilling Methods 0.000 claims description 18
- 238000003303 reheating Methods 0.000 abstract description 9
- 238000005507 spraying Methods 0.000 abstract description 4
- 230000000171 quenching effect Effects 0.000 description 17
- 238000005516 engineering process Methods 0.000 description 13
- 239000007921 spray Substances 0.000 description 9
- 238000012360 testing method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 239000008400 supply water Substances 0.000 description 4
- 238000005496 tempering Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000007323 disproportionation reaction Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 239000008186 active pharmaceutical agent Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B23/00—Tube-rolling not restricted to methods provided for in only one of groups B21B17/00, B21B19/00, B21B21/00, e.g. combined processes planetary tube rolling, auxiliary arrangements, e.g. lubricating, special tube blanks, continuous casting combined with tube rolling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2261/00—Product parameters
- B21B2261/20—Temperature
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
- B21B37/76—Cooling control on the run-out table
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
- B21B38/006—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring temperature
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
- B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
Abstract
In producing a seamless pipe, in which a hot billet is formed into a hollow shell by piercing/rolling by mean of a piercer, and subsequently transferred to a strech rolling mill without reheating to stretch/roll the hollow shell and finally formed into a seamless pipe by fixed diameter rolling by means of a fixed diameter rolling machine, the step 1 of measuring the temperature of the hollow shell at the outlet side of the strech rolling mill in the axial direction, and the step 2 of spraying water to cool the hollow shell at the inlet side of the fixed diameter rolling machine depending on the axial temperature distribution obtained for the hollow shell so as to achieve a uniform temperature distribution in the axial direction of the hollow shell are further included thereby preventing an uneven axial temperature distribution while saving energy.
Description
Technical field
The present invention relates to utilize the manufacturing approach and being suitable for of the seamless steel pipe of mannesmann process to implement the manufacturing equipment of the seamless steel pipe of this manufacturing approach.
Background technology
Seamless steel pipe is used for the oil well pipe that requirement has high strength and excellent toughness, can utilize the mannesmann process manufacturing.This tubulation method is made up of following step:
(1) utilize punch (roll piercing mill (piercer)), drilling/rolling is heated to the steel billet of set point of temperature, and is configured as hollow bloom (hollow blank pipe);
(2) utilize elongating mill (for example: mandrel mill), extend rolling hollow bloom;
(3) utilize precision mill (for example: sizing mill (sizer), stretch-reducing mill (stretch reduce r)), with being extended the external diameter and the wall thickness of rolling hollow bloom fixed diameter rolling to regulation;
(4) seamless steel pipe that utilizes cooling bed air cooling to obtain by fixed diameter rolling, or enforcement is quenched, temper to seamless steel pipe.
In the past, adopting the manufacturing equipment of mannesmann process is in reheating furnace, to heat and carry out fixed diameter rolling being extended rolling hollow bloom.In addition, to being implemented by the steel pipe of fixed diameter rolling under the situation of Quenching Treatment, steel pipe is heated in glowing furnace and quenches.
In recent years; In order to seek the raising of energy-conservationization and production efficiency; Sometimes adopt following manufacturing equipment, that is, and the glowing furnace when reheating furnace when omitting fixed diameter rolling and Quenching Treatment; Till will be from the drilling/rolling to the fixed diameter rolling, according to circumstances further the step till the Quenching Treatment as a series of online (on-line) step.In the manufacturing equipment that has omitted reheating furnace and glowing furnace, till fixed diameter rolling, Quenching Treatment, do not heat again fully after when drilling/rolling, being rolled the heating of member.Adopt under the situation of this manufacturing equipment, the Temperature Distribution of the length direction of the steel pipe behind the fixed diameter rolling becomes inhomogeneous, becomes low in top ends (leading section) side temperature, and portion's (rearward end) side temperature is high endways.Be created in the low and high phenomenon of portion's side temperature endways of top ends side temperature by following reason.
When drilling/rolling,, become the heat radiation of the top ends of tubulose side significantly so formerly be perforated because heated steel billet utilization top (plug) is perforated from top ends lateral end portion side.Therefore, it is low in top ends side temperature that the hollow bloom behind the drilling/rolling becomes, and portion's side temperature is high endways.Owing to do not heat again to being rolled member, also produce identical tendency in the inhomogeneous hollow bloom after extension is rolling of this length direction Temperature Distribution, further also produce identical tendency in the steel pipe behind fixed diameter rolling.Thus, in the steel pipe behind fixed diameter rolling, the uneven phenomenon of Temperature Distribution in the longitudinal direction appears.
In the steel pipe behind fixed diameter rolling, in case the temperature distributing disproportionation of length direction is even, in the longitudinal direction along with the thermal shrinking quantity of cooling will be different, the external diameter of steel pipe becomes inhomogeneous thereby cause after cooling in the longitudinal direction.In addition, behind fixed diameter rolling, under the situation that steel pipe is quenched, in case the temperature distributing disproportionation of length direction is even, temper grade will be different in the longitudinal direction, thereby cause after quenching, and the mechanical property of steel pipe becomes inhomogeneous in the longitudinal direction.
Following is the temperature controlled prior art that is rolled member that relates to when making steel pipe.
Open following technology in patent documentation 1 promptly, at the multi-stag continuous-rolling of the manufacturing that is used for seamless steel pipe, prevents the technology that excessively reduces through the temperature that is rolled member in the process of continuous-rolling.The disclosed technology of the document does; Entrance side and pars intermedia configuration reheating furnace at continuous-rolling; And outlet side configuration thermometer at entrance side, outlet side and the continuous-rolling of the middle reheating furnace of the pars intermedia that is disposed at continuous-rolling; Based on the steel pipe temperature that arrives with each thermometer measure, the temperature of reheating furnace control in the middle of carrying out.
Open following technology in patent documentation 2 promptly, at the stretch-reducing mill of the manufacturing that is used for electric welded steel pipe, prevents to be reduced by temperature on the circumferencial direction of steel pipe the technology of the generation wall thickness deviation that causes.The disclosed technology of the document does; Entrance side at stretch-reducing mill in series disposes a plurality of load coils; And at the outlet side of load coil and the outlet side configuration thermometer of stretch-reducing mill; Based on the measured temperature of the steel pipe circumferencial direction of thermometer, adjustment is to the delivery of load coil.
Open following technology in patent documentation 3 promptly, when hot formed rectangular steel tube of cooling or round steel pipe, suppresses the technology that bends.In the disclosed technology of the document; Before with steel pipe hot forming to the molded component of the geomery of regulation, dispose reheating furnace; And after molded component, dispose sprinkler part, utilize sprinkler part the cooling pipe from the whole direction water spray of periphery and equably of the steel pipe through molded component.
In above-mentioned patent documentation 1～3 disclosed technology,, heat steel pipe again and seek the homogenising of temperature, so do not occur on the steel pipe behind the fixed diameter rolling length direction Temperature Distribution uneven problem that becomes because before fixed diameter rolling.But any technology in above-mentioned patent documentation 1～3 disclosed technology all because of before precision mill, having reheating furnace, load coil, so consume a large amount of fuel or electric power, can't become the countermeasure of energy-conservationization.
Patent documentation 1: TOHKEMY 2004-58128 communique
Patent documentation 2: TOHKEMY 2005-7452 communique
Patent documentation 3: TOHKEMY 2007-301574 communique
Summary of the invention
The problem that invention will solve
The objective of the invention is to, a kind of manufacturing approach and manufacturing installation thereof with seamless steel pipe of property is provided:
(1) avoids in the steel pipe behind fixed diameter rolling length direction Temperature Distribution inhomogeneous;
(2) can realize energy-conservationization.
The scheme that is used to deal with problems
Main points of the present invention are described below.
(I) manufacturing approach of seamless steel pipe of the present invention; It utilizes the warmed-up steel billet of punch drilling/rolling and it is configured as hollow bloom; Then do not utilize elongating mill to extend rolling more heatedly and utilize precision mill to carry out fixed diameter rolling this hollow bloom; It is characterized in that this manufacturing approach comprises following a series of each step:
(step 1) is alongst measured the temperature of hollow bloom at the outlet side of elongating mill; And
(step 2) according to the length direction Temperature Distribution of the hollow bloom that measures, cools off hollow bloom at the entrance side of precision mill to the hollow bloom injection water, makes the length direction uniformity of temperature profile of hollow bloom.
The manufacturing approach of above-mentioned (I) can become and is connected on after the above-mentioned fixed diameter rolling, no longer heats and the structure of quenching.
This manufacturing approach preferably becomes the structure of the water yield that on each zone of dividing a plurality of zones that hollow bloom forms along its length adjustment sprays to hollow bloom in above-mentioned steps 2.
(II) manufacturing equipment of seamless steel pipe of the present invention, it comprises: punch, the warmed-up steel billet of drilling/rolling also makes it be configured as hollow bloom; Elongating mill does not extend rolling to this hollow bloom more heatedly; And precision mill, this hollow bloom is not carried out fixed diameter rolling more heatedly, it is characterized in that this manufacturing equipment comprises:
Thermometer, it is disposed at the outlet side of elongating mill, alongst measures the temperature of hollow bloom; And
Water cooling plant, it is disposed at the entrance side of precision mill, according to the length direction Temperature Distribution of the hollow bloom that utilizes the said temperature meter to measure, cools off hollow bloom to the hollow bloom injection water, makes the length direction uniformity of temperature profile of hollow bloom.
The effect of invention
The manufacturing approach of seamless steel pipe of the present invention has following remarkable result:
(1) avoids in the steel pipe behind fixed diameter rolling length direction Temperature Distribution inhomogeneous;
(2) can realize energy-conservationization.
Utilize the manufacturing equipment of seamless steel pipe of the present invention can give full play to the excellent effect of manufacturing approach of the present invention.
Description of drawings
Fig. 1 is the sketch map of structure example of the manufacturing equipment of expression seamless steel pipe of the present invention.
Fig. 2 is the figure of structure example of the water cooling plant in the manufacturing equipment of expression seamless steel pipe of the present invention, and (a) of Fig. 2 is the sectional view of expression along the throughput direction of hollow bloom, and Fig. 2 (b) is front view.
Fig. 3 is the expression water yield of on the length of the length direction 1m of hollow bloom, spraying and the figure of the correlation between the temperature slippage.
The specific embodiment
In order to reach above-mentioned purpose; The inventor is to the attentively research repeatedly of following method; Promptly; When drilling/rolling, be rolled after the heating of member under the prerequisite that does not heat again till fixed diameter rolling, the Quenching Treatment, avoid on the steel pipe behind the fixed diameter rolling, producing the uneven method of length direction Temperature Distribution.Its result obtains following (a) and opinion (b).
(a), avoid behind fixed diameter rolling producing length direction Temperature Distribution inhomogeneous of steel pipe through making the length direction uniformity of temperature profile in the hollow bloom before fixed diameter rolling.
(b) in order to make the length direction uniformity of temperature profile in the hollow bloom before fixed diameter rolling, effectively way is the length direction Temperature Distribution according to hollow bloom, cools off hollow bloom to the hollow bloom injection water.
The present invention is based on above-mentioned (a) and opinion (b) are accomplished.Below, describe with regard to the manufacturing approach of seamless steel pipe of the present invention and the optimal way of manufacturing equipment thereof.
1. the manufacturing equipment of seamless steel pipe
Fig. 1 is the sketch map of structure example of the manufacturing equipment of expression seamless steel pipe of the present invention.As shown in the drawing, manufacturing equipment 1 comprises that heater 2 as a series of on-line equipment, punch 3 (roll piercing mill), elongating mill 4 are (for example: mandrel mill), precision mill 5 (for example: sizing mill, stretch-reducing mill) and cooling bed 6.In addition, manufacturing equipment 1 comprise the outlet side that is disposed at elongating mill 4 thermometer 7, be disposed at ensuing precision mill 5 entrance side water cooling plant 8 and be connected in thermometer 7 and the control device 9 of water cooling plant 8.
In this manufacturing equipment 1, when precision mill 5 carries out fixed diameter rolling, utilize thermometer 7 alongst to measure the temperature of the hollow bloom that extends rolling by elongating mill 4.Control device 9 receives the signal from the measurement temperature of thermometer 7 successively, calculates the Temperature Distribution of the length direction of hollow bloom, to water cooling plant 8 outputs and the corresponding driving signal of this Temperature Distribution.Water cooling plant 8 is based on the driving signal from control device 9,, cools off with the length direction Temperature Distribution of the hollow bloom uniform mode that becomes to the hollow bloom injection water with the suitable water yield.The hollow bloom that has been cooled in the precision mill 5 by fixed diameter rolling.
In this manufacturing equipment 1, till passing through water cooling plant 8 to precision mills 5 till punch 3 to the elongating mill 4 and from elongating mill 4, utilize roller path to carry hollow bloom along its length.
Fig. 2 is the figure of structure example of the water cooling plant in the manufacturing equipment of expression seamless steel pipe of the present invention, and (a) of Fig. 2 is the sectional view of expression along the throughput direction of hollow bloom, and Fig. 2 (b) is front view.In (a) of Fig. 2, represent the throughput direction of hollow bloom with thick-line arrow.
As shown in Figure 2, water cooling plant 8 comprises that the transport path that makes hollow bloom P passes the loop pipe 11 at center.On loop pipe 11, be connected with feed pipe 12, on this feed pipe 12, be connected with supply-water pump 13.Based on the driving signal from above-mentioned control device 9 shown in Figure 1, supply-water pump 13 drives, and can adjust the water yield of the water that transfers out.
On the interior week of loop pipe 11, along the circumferential direction equally spaced be provided with a plurality of nozzles 14.Each nozzle 14 will pass through the water that feed pipe 12 is supplied with to loop pipe 11 along with the driving of supply-water pump 13, spray to hollow bloom P.Thus, the hollow bloom P that alongst carries, during at every turn through loop pipe 11, all will be in a circumferential direction by cooling equably.
The quantity of nozzle 14 is not special to be limited, but preferred about 4～24.This is because if be less than 4, possibly make hollow bloom is become insufficient in the even cooling of circumferencial direction; If more than 24, this degree of evenly cooling off is with saturated.
Preferably each nozzle 14 is set to slight inclination to rightabout (direction of terminal part side) with the throughput direction of hollow bloom P.This is the inside that gets into this hollow bloom P that passes through loop pipe 11 for anti-sealing from the rear end of hollow bloom P.
Above-mentioned manufacturing equipment 1 shown in Figure 1 can along the transport path multistage of hollow bloom P the water cooling plant 8 of said structure is set, 1 section water cooling plant 8 also can be set.Can adopt radiation thermometer as thermometer 7.
For the steel pipe behind the fixed diameter rolling is implemented Quenching Treatment, above-mentioned manufacturing equipment shown in Figure 11 can not dispose glowing furnace, replaces cooling bed 6 and have chilling apparatus or and with cooling bed 6 and chilling apparatus.Can adopt the device of tank impregnation method, device that laminar flow (laminar) current flow down mode as chilling apparatus.For the steel pipe after quenching is implemented temper, can after chilling apparatus, dispose tempering furnace.
2. the manufacturing approach of seamless steel pipe
On one side with reference to above-mentioned Fig. 1, Yi Bian the manufacturing approach of seamless steel pipe of the present invention is described.In manufacturing approach of the present invention, utilize the warmed-up steel billet of punch 3 drilling/rollings, make it be configured as hollow bloom, then do not utilize elongating mill 4 to extend rolling more heatedly and utilize precision mill 5 to carry out fixed diameter rolling this hollow bloom.
Cause significantly that in the heat radiation of top ends side the Temperature Distribution of length direction becomes inhomogeneous when at this moment, the hollow bloom behind the drilling/rolling is because of drilling/rolling.Therefore, the hollow bloom that extends after rolling also has identical tendency, and the Temperature Distribution of length direction becomes inhomogeneous.
In manufacturing approach of the present invention, when precision mill 5 carries out fixed diameter rolling, utilize thermometer 7, alongst measure temperature at the outlet side hollow bloom of elongating mill 4.Then,, utilize water cooling plant 8, cool off hollow bloom to the hollow bloom injection water, make the length direction Temperature Distribution of hollow bloom become even at the entrance side of precision mill 5 according to the length direction Temperature Distribution of the hollow bloom that measures.
Particularly; Utilization is connected in the control device 9 of thermometer 7; Calculate each the regional temperature divide a plurality of zones that hollow bloom forms along its length, and the minimum temperature in selected each regional temperature, the temperature difference between each regional minimum temperature calculated.Then, based on this temperature difference, reckoning from the water yield of water cooling plant 8 to the hollow bloom injection, transfers out and the corresponding driving signal of this water yield to water cooling plant 8 in each zone.Thus, the hollow bloom that is transferred has from the water of the suitable water yield of water cooling plant 8 in each area spray and is cooled, and it is even that the Temperature Distribution of length direction becomes.
At this, between the water yield that hollow bloom sprays and temperature slippage, there is correlation.Therefore, poor based on the said temperature in each zone of hollow bloom, for example,, can extrapolate the water yield to the hollow bloom injection according to following correlation between the temperature slippage of the water yield that hollow bloom sprays and hollow bloom shown in Figure 3.
Fig. 3 is the expression water yield of on the length of the length direction 1m of hollow bloom, spraying and the figure of the correlation between the temperature slippage.The figure shows the result of the investigation of carrying out following test; Promptly; Use the various hollow blooms that changed external diameter and wall thickness; And the water yield ground that has repeatedly changed on the length of length direction 1m sprays water tests to the various hollow blooms that are heated to 1100 ℃, and investigated the temperature slippage of spraying the zone that this water is arranged.
As shown in the drawing, at the water yield Q (m that sprays to hollow bloom
3) and temperature slippage Δ T (℃) between, the correlation of Δ T=160 * Q that the external diameter of existence and hollow bloom and the size of wall thickness are irrelevant.According to this relational expression, the said temperature difference in each zone of hollow bloom as Δ T, can be extrapolated the water yield Q that sprays to hollow bloom.
According to the manufacturing approach of seamless steel pipe of the present invention, when carrying out fixed diameter rolling, can make the length direction uniformity of temperature profile, thereby not occur on the steel pipe behind the fixed diameter rolling length direction Temperature Distribution uneven problem that becomes to the hollow bloom injection water.Therefore, the steel pipe behind the fixed diameter rolling in the longitudinal direction just can be together along with the thermal shrinking quantity of cooling, and after cooling, the external diameter of steel pipe becomes even in the whole zone of length direction.In addition, under the situation of behind the fixed diameter rolling steel pipe being quenched, temper grade just can be together in the longitudinal direction, and after quenching, the mechanical property of steel pipe also becomes even in the whole zone of length direction.
In addition,, when drilling/rolling, till fixed diameter rolling, Quenching Treatment, do not heat again after heating, thereby can not consume a large amount of fuel, electric power, can realize energy-conservationization being rolled member according to the manufacturing approach of seamless steel pipe of the present invention.
The manufacturing approach of seamless steel pipe of the present invention can utilize the manufacturing equipment of seamless steel pipe of the present invention to give full play to its effect.
Embodiment
(embodiment 1)
In order to confirm effect of the present invention, implemented to use above-mentioned manufacturing equipment shown in Figure 1 to carry out drilling/rolling, extend rolling and fixed diameter rolling, make the real machine test of the seamless steel pipe of following specification.
Size: external diameter 406.4mm, wall thickness 30.7mm, length 12m
Material: low-carbon steel (C:0.6wt%)
When carrying out fixed diameter rolling, measure to extend the temperature of the hollow bloom after rolling, according to its length direction Temperature Distribution, with the water yield shown in the below table 1 to the hollow bloom injection water.In addition, for relatively, implemented not carry out the test of the injection of water.
(table 1)
Table 1
After firm fixed diameter rolling, measure the temperature of seamless steel pipe, and after this steel pipe of cooling, in the scope of whole length direction, measure the external diameter of steel pipe.In table 1, represent its result in the lump.In table 1, each zone of expression is the top ends zone from the front end 1m～3m scope of steel pipe, the central region of the length direction center 2m scope of steel pipe and from the terminal part zone of the rear end 1m～3m scope of steel pipe.
From the result shown in the table 1, show following situation.
In example of the present invention, through at fixed diameter rolling forward direction hollow bloom injection water, just the temperature of the steel pipe behind the fixed diameter rolling becomes even in the longitudinal direction.Its result, it is even that the external diameter of cooled steel pipe becomes in the longitudinal direction.
In comparative example, before fixed diameter rolling not to the hollow bloom injection water, therefore, the just temperature of the steel pipe behind the fixed diameter rolling about 40 ℃ of deviations and become inhomogeneous in the longitudinal direction.Its result, the external diameter of cooled steel pipe is in the longitudinal direction about deviation 0.4mm and become inhomogeneous.
(embodiment 2)
Implement to use above-mentioned manufacturing equipment shown in Figure 1 to carry out drilling/rolling, extend rolling, fixed diameter rolling and quenching, temper; Make the real machine test of the seamless steel pipe of following specification, confirmed the influence that the mechanical property of steel pipe is brought to the hollow bloom injection water.
Size: external diameter 406mm, wall thickness 14mm, length 12m
Material: the low-carbon steel of the constituent shown in the below table 2
Mechanical property: the X65 level of API standard
(table 2)
Table 2
Unit: quality %
When carrying out fixed diameter rolling, measure to extend the temperature of the hollow bloom after rolling, according to its length direction Temperature Distribution, with the water yield shown in the below table 3 to the hollow bloom injection water.In addition, for relatively, implemented not carry out the test of the injection of water.
(table 3)
Table 3
Before being about to quenching behind the fixed diameter rolling, measuring the temperature of seamless steel pipe, and,, and measure grain size number and yield strength (YS) from each extracted region test film alongst to after this steel pipe enforcement quenching, the temper.The test method of measuring grain size number is according to ASTM, and the test method of measuring yield strength is according to ASTM.In table 3, represent its result in the lump.Each zone in table 3 is identical with the foregoing description 1, also representes top ends zone, central region and terminal part zone.
From the result shown in the table 3, show following situation.
In example of the present invention, through at fixed diameter rolling forward direction hollow bloom injection water, the temperature of the steel pipe before being about to quench becomes even in the longitudinal direction.Its result, the grain size number and the yield strength of the steel pipe after quenching, the tempering all become even in the longitudinal direction.
In comparative example, not to the hollow bloom injection water, therefore, the temperature of the steel pipe before be about to quenching is about 50 ℃ of deviations and become inhomogeneous in the longitudinal direction before fixed diameter rolling.Its result quenches, the grain size number of the steel pipe after the tempering becomes the fine grained of granularity numbering 11 in the top ends zone, and the portion zone becomes the coarse granule of granularity numbering 5 endways, and it is inhomogeneous to become in the longitudinal direction.Grain size number endways the portion zone become coarse grained reason be because, the portion zone is than high in the top ends zone endways for the temperature till quenching, portion zone intercrystalline is grown up and thickization endways.In addition, quench, the yield strength of the steel pipe after the tempering is in the longitudinal direction about deviation 60MPa and become inhomogeneous.
Utilizability on the industry
The present invention can be used to utilize mannesmann process to make seamless steel pipe effectively.
Description of reference numerals
1: manufacturing equipment; 2: heater; 3: punch; 4: elongating mill; 5: precision mill; 6: cooling bed; 7: thermometer; 8: water cooling plant; 9: control device; 11: loop pipe; 12: feed pipe; 13: supply-water pump; 14: nozzle; P: hollow bloom.
Claims (4)
1. the manufacturing approach of a seamless steel pipe; It utilizes the warmed-up steel billet of punch drilling/rolling and it is configured as hollow bloom; Then do not utilize elongating mill to extend rolling more heatedly and utilize precision mill to carry out fixed diameter rolling this hollow bloom; It is characterized in that this manufacturing approach comprises following a series of each step:
Step 1 is alongst measured the temperature of hollow bloom at the outlet side of elongating mill; And
Step 2 according to the length direction Temperature Distribution of the hollow bloom that measures, is cooled off hollow bloom at the entrance side of precision mill to the hollow bloom injection water, makes the length direction uniformity of temperature profile of hollow bloom.
2. the manufacturing approach of seamless steel pipe according to claim 1 is characterized in that,
Be connected on after the above-mentioned fixed diameter rolling, no longer heat and quench.
3. the manufacturing approach of seamless steel pipe according to claim 1 and 2 is characterized in that,
In above-mentioned steps 2, the water yield that adjustment is sprayed to hollow bloom on each zone of dividing a plurality of zones that hollow bloom forms along its length.
4. the manufacturing equipment of a seamless steel pipe, it comprises: punch, the warmed-up steel billet of drilling/rolling also makes it be configured as hollow bloom; Elongating mill does not extend rolling to this hollow bloom more heatedly; And precision mill, this hollow bloom not being carried out fixed diameter rolling more heatedly, the manufacturing equipment of this seamless steel pipe is characterised in that this manufacturing equipment comprises:
Thermometer, it is disposed at the outlet side of elongating mill, alongst measures the temperature of hollow bloom; And
Water cooling plant, it is disposed at the entrance side of precision mill, according to the length direction Temperature Distribution of the hollow bloom that utilizes the said temperature meter to measure, cools off hollow bloom to the hollow bloom injection water, makes the length direction uniformity of temperature profile of hollow bloom.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009-102312 | 2009-04-20 | ||
| JP2009102312A JP5262949B2 (en) | 2009-04-20 | 2009-04-20 | Manufacturing method and equipment for seamless steel pipe |
| PCT/JP2010/053824 WO2010122847A1 (en) | 2009-04-20 | 2010-03-09 | Method of producing seamless pipe and apparatus for performing the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102405114A true CN102405114A (en) | 2012-04-04 |
Family
ID=43010970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010800174107A Pending CN102405114A (en) | 2009-04-20 | 2010-03-09 | Method of producing seamless pipe and apparatus for performing the same |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20120017662A1 (en) |
| EP (1) | EP2422892A4 (en) |
| JP (1) | JP5262949B2 (en) |
| CN (1) | CN102405114A (en) |
| BR (1) | BRPI1009482A2 (en) |
| WO (1) | WO2010122847A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104138905A (en) * | 2014-07-01 | 2014-11-12 | 太原科技大学 | Novel continuous skew rolling process for seamless steel pipe |
| CN104596176A (en) * | 2015-01-26 | 2015-05-06 | 张家港兴业钢管有限公司 | Cooling system for producing seamless steel tube |
| CN111417472A (en) * | 2017-11-29 | 2020-07-14 | 日本制铁株式会社 | Piercing machine and method for manufacturing seamless metal pipe using same |
| CN111417471A (en) * | 2017-11-29 | 2020-07-14 | 日本制铁株式会社 | Method for manufacturing seamless steel pipe |
| CN112680585A (en) * | 2019-10-17 | 2021-04-20 | 杰森能源技术有限公司 | Method for straightening heat treatment deformation of continuous oil pipe |
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| JP6295387B1 (en) * | 2017-05-19 | 2018-03-14 | 山田 榮子 | Controlled cooling method for hot-rolled steel bars |
| CN108032040A (en) * | 2017-12-07 | 2018-05-15 | 浙江世达钢管有限公司 | A kind of seamless thin wall stainless steel waterpipe production technology |
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| CN111229845B (en) * | 2020-01-15 | 2020-12-29 | 燕山大学 | Large-scale shell ring annular cooling device |
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| CN114589203B (en) * | 2022-01-25 | 2023-09-05 | 大冶特殊钢有限公司 | Preparation method of 09MnNiD seamless steel tube suitable for low temperature |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63215310A (en) * | 1987-03-04 | 1988-09-07 | Nkk Corp | Manufacturing equipment for seamless steel pipe |
| WO1996012574A1 (en) * | 1994-10-20 | 1996-05-02 | Sumitomo Metal Industries, Ltd. | Method of manufacturing seamless steel pipes and manufacturing equipment therefor |
| US5724842A (en) * | 1993-08-26 | 1998-03-10 | Davy Mckee (Poole) Limited | Rolling of metal strip |
| JP2004058128A (en) * | 2002-07-31 | 2004-02-26 | Jfe Steel Kk | Method and device for controlling rolling temperature of steel pipe |
| JP2005007452A (en) * | 2003-06-20 | 2005-01-13 | Jfe Steel Kk | Controlling method for temperature of steel tube in equalizer |
| US7293443B2 (en) * | 2004-01-16 | 2007-11-13 | Sumitomo Metal Industries, Ltd. | Method for manufacturing seamless pipes or tubes |
| CN101077505A (en) * | 2007-06-27 | 2007-11-28 | 杨泽 | Seamless steel pipe restraint tandem rolling short flowpath roller milling process |
| CN101287853A (en) * | 2005-08-22 | 2008-10-15 | 住友金属工业株式会社 | Seamless steel pipe for line pipe and method for producing same |
| CN101394945A (en) * | 2007-01-30 | 2009-03-25 | 东芝三菱电机产业系统株式会社 | Temperature control device for hot rolling mill |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5994515A (en) * | 1982-11-19 | 1984-05-31 | Kawasaki Steel Corp | Method for controlling outer diameter in seizer |
| BRPI0408939B1 (en) * | 2003-03-26 | 2017-07-18 | Nippon Steel & Sumitomo Metal Corporation | Method for producing seamless steel pipe |
| US7937978B2 (en) * | 2005-03-31 | 2011-05-10 | Sumitomo Metal Industries, Ltd. | Elongation rolling control method |
| WO2007111131A1 (en) * | 2006-03-28 | 2007-10-04 | Sumitomo Metal Industries, Ltd. | Process for production of seamless pipes |
| JP5019783B2 (en) | 2006-05-09 | 2012-09-05 | ナカジマ鋼管株式会社 | Steel pipe manufacturing method and steel pipe manufacturing equipment |
-
2009
- 2009-04-20 JP JP2009102312A patent/JP5262949B2/en not_active Expired - Fee Related
-
2010
- 2010-03-09 BR BRPI1009482A patent/BRPI1009482A2/en not_active Application Discontinuation
- 2010-03-09 CN CN2010800174107A patent/CN102405114A/en active Pending
- 2010-03-09 WO PCT/JP2010/053824 patent/WO2010122847A1/en active Application Filing
- 2010-03-09 EP EP10766906.1A patent/EP2422892A4/en not_active Withdrawn
-
2011
- 2011-09-28 US US13/247,120 patent/US20120017662A1/en not_active Abandoned
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63215310A (en) * | 1987-03-04 | 1988-09-07 | Nkk Corp | Manufacturing equipment for seamless steel pipe |
| US5724842A (en) * | 1993-08-26 | 1998-03-10 | Davy Mckee (Poole) Limited | Rolling of metal strip |
| WO1996012574A1 (en) * | 1994-10-20 | 1996-05-02 | Sumitomo Metal Industries, Ltd. | Method of manufacturing seamless steel pipes and manufacturing equipment therefor |
| CN1161010A (en) * | 1994-10-20 | 1997-10-01 | 住友金属工业株式会社 | Method of manufacturing seamless steel pipes and manufacturing equipment therefor |
| JP2004058128A (en) * | 2002-07-31 | 2004-02-26 | Jfe Steel Kk | Method and device for controlling rolling temperature of steel pipe |
| JP2005007452A (en) * | 2003-06-20 | 2005-01-13 | Jfe Steel Kk | Controlling method for temperature of steel tube in equalizer |
| US7293443B2 (en) * | 2004-01-16 | 2007-11-13 | Sumitomo Metal Industries, Ltd. | Method for manufacturing seamless pipes or tubes |
| CN101287853A (en) * | 2005-08-22 | 2008-10-15 | 住友金属工业株式会社 | Seamless steel pipe for line pipe and method for producing same |
| CN101394945A (en) * | 2007-01-30 | 2009-03-25 | 东芝三菱电机产业系统株式会社 | Temperature control device for hot rolling mill |
| CN101077505A (en) * | 2007-06-27 | 2007-11-28 | 杨泽 | Seamless steel pipe restraint tandem rolling short flowpath roller milling process |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104138905A (en) * | 2014-07-01 | 2014-11-12 | 太原科技大学 | Novel continuous skew rolling process for seamless steel pipe |
| CN104596176A (en) * | 2015-01-26 | 2015-05-06 | 张家港兴业钢管有限公司 | Cooling system for producing seamless steel tube |
| CN111417472A (en) * | 2017-11-29 | 2020-07-14 | 日本制铁株式会社 | Piercing machine and method for manufacturing seamless metal pipe using same |
| CN111417471A (en) * | 2017-11-29 | 2020-07-14 | 日本制铁株式会社 | Method for manufacturing seamless steel pipe |
| CN111417471B (en) * | 2017-11-29 | 2022-04-01 | 日本制铁株式会社 | Method for manufacturing seamless steel pipe |
| CN111417472B (en) * | 2017-11-29 | 2022-05-27 | 日本制铁株式会社 | Piercing machine and method for manufacturing seamless metal pipe using same |
| US11511326B2 (en) | 2017-11-29 | 2022-11-29 | Nippon Steel Corporation | Piercing machine, and method for producing seamless metal pipe using the same |
| CN112680585A (en) * | 2019-10-17 | 2021-04-20 | 杰森能源技术有限公司 | Method for straightening heat treatment deformation of continuous oil pipe |
| CN112680585B (en) * | 2019-10-17 | 2022-01-25 | 杰森能源技术有限公司 | Method for straightening heat treatment deformation of continuous oil pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| BRPI1009482A2 (en) | 2016-03-01 |
| US20120017662A1 (en) | 2012-01-26 |
| EP2422892A1 (en) | 2012-02-29 |
| WO2010122847A1 (en) | 2010-10-28 |
| JP5262949B2 (en) | 2013-08-14 |
| EP2422892A4 (en) | 2014-07-16 |
| JP2010247218A (en) | 2010-11-04 |
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