CN101530898A - Corrosion-resistant dual metal clad tube blank and manufacturing method thereof - Google Patents

Corrosion-resistant dual metal clad tube blank and manufacturing method thereof Download PDF

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Publication number
CN101530898A
CN101530898A CN200910077496A CN200910077496A CN101530898A CN 101530898 A CN101530898 A CN 101530898A CN 200910077496 A CN200910077496 A CN 200910077496A CN 200910077496 A CN200910077496 A CN 200910077496A CN 101530898 A CN101530898 A CN 101530898A
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layer
molten metal
corrosion
metal
pipe
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CN200910077496A
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Chinese (zh)
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CN101530898B (en
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王黎晖
于满
武贤
陈建波
申勇
杨玉学
刘静
张伏霞
霍川喜
宋亚峰
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新兴铸管股份有限公司
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Abstract

A manufacturing method of a corrosion-resistant dual metal clad tube blank comprises the following steps: outer-layer molten metal is pumped into a pipe die for centrifugal pouring, the molten metal is cooled after pouring, and inner-layer molten metal is poured when internal surface temperature of the outer layer is cooled to be lower than 50-70 DEG C which is the melting point of the outer-layer molten metal; inner-layer molten metal is pumped into the pipe die for centrifugal pouring, the molten metal is cooled after pouring; cooling is stopped after the outer layer and the inner layer are completely solidified, at the moment, the inner layer and the outer layer achieve complete metallurgical bonding; wherein, the outer layer is made of X52 or X60 steel and the inner layer is made of 825 steel. A metallurgical bonding layer of a production tube obtained by carrying out extrusion or hot rolling on the tube blank manufactured by the method is several times or dozens of times as thick as a bonding layer of the dual metal tube obtained by the explosive welding process; the transition of the ingredients on the inner and outer layers is gentle, thus greatly relieving the interfacial stress between the inner layer and the outer layer, facilitating the inner layer and the outer layer not to be layered easily, improving the safety of the use of the production tube and prolonging the service life of the production tube.

Description

Corrosion-resistant dual metal clad tube blank and production method thereof
Technical field
The present invention relates to a kind of corrosion-resistant dual metal composite, relate in particular to a kind of corrosion-resistant dual metal clad tube blank and production method thereof, this pipe is by extruding or the rolling seamless production tube of corrosion-resistant dual metal that is processed into.
Background technology
X52/825, X60/825 bimetal tube are mainly used in the oil well pipe and the line concentration pipe of high corrosion oil gas well.X52, X60 are two intensity ranks in U.S. API (American Petroleum Institute) standard, are meant all ferrous materials that meet table 1, table 3 performance requirement.The 825th, a kind of corrosion resistant nickel-bass alloy material is the trade mark UNS N08825 in U.S. ASTM, ASME, the AMS standard, is equivalent to the NA16 among the British Standard BS, the NiFe30Cr21Mo3 among the international standard ISO, is commonly used in to contain H 2S measures in the higher oil gas field, and its composition requires to see Table 2.
Table 1 X52 performance requirement
Tensile strength (MPa) Yield strength (MPa) Percentage elongation (%)
≥490 ≥359 ≥25
Table 2 825 compositions require (percentage by weight)
? C ?? Si ?? Mn ? P ? S ?? Cr ?? Mo ?? Ni ?? Nb ?? Ti ?? Cu ????? Al ?? Fe
≤?? 0.05 ≤? 0.5 ≤? 1.0 ≤??? 0.020 ≤??? 0.020 19.5~ 23.5?? 2.5~ 3.5?? 38~ 46?? ≤?? 0.33 0.6~ 1.2?? 1.5~ 2.0?? ≤? 0.2 ≥ 22
Table 3 X60 performance requirement
Tensile strength (MPa) Yield strength (MPa) Percentage elongation (%)
≥517 ≥414 ≥19
Existing X52/825, X60/825 bimetallic seamless steel pipe adopt explosion weld process production: earlier outer X52 or X60 and internal layer 825 are machined into pipe respectively, then outer tube and internal layer 825 pipes are worn mutually, apply explosion energy at interior pipe, make the ectonexine metal form explosive welding and connect.But, adopt X52/825, the X60/825 composite bimetal pipe of this process forming can not guarantee all seam fully of ectonexine, always have the not zone of seam of part, in use, these can not expanded in the zone of seam gradually, finally cause the ectonexine layering, influence the security that bimetal tube uses.In addition, the fused layers thickness that explosive welding forms only is several microns, in abominable environment for use, because the difference of ectonexine material can cause at the stress of very thin ectonexine interface and concentrate, and forms bigger interfacial stress, this stress impels inside and outside layering, has influence on the security of pipeline equally.
Summary of the invention
The technical problem to be solved in the present invention is to overcome above-mentioned shortcoming, the complete metallurgical melting of a kind of ectonexine is provided, is difficult for layering, corrosion-resistant dual metal clad tube blank and production method thereof safe to use.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of production method of corrosion-resistant dual metal clad tube blank may further comprise the steps:
(1) outer sphere molten metal is fed centrifugal casting in the pipe die, pour back cooling, treat that outer internal surface temperature is cooled to and begin to pour into a mould inner layer metal liquid when being lower than 50 ℃~70 ℃ of outer sphere molten metal fusing points;
(3) inner layer metal liquid is fed centrifugal casting in the pipe die, pour the back cooling, treat to stop cooling after skin and internal layer all solidify, this moment, internal layer and skin reached complete metallurgical melting;
Wherein, described skin is X52 or X60 steel material, and internal layer is 825 steel material.
The production method of corrosion-resistant dual metal clad tube blank of the present invention; wherein in (1) step forward direction outer sphere molten metal, add covering slag; add covering slag in (2) step forward direction inner layer metal liquid, described covering slag is a fluorite, and addition is 0.5%~1.5% of a molten metal weight.
The production method of corrosion-resistant dual metal clad tube blank of the present invention, the addition of wherein said covering slag is preferably 0.8%~1.1% of molten metal weight.
The present invention also provides the corrosion-resistant dual metal clad tube blank that is made by aforementioned production method.
The production method of corrosion-resistant dual metal clad tube blank of the present invention, when cast inner layer metal liquid, outer internal surface temperature is controlled at is lower than 50~70 ℃ of outer sphere molten metal fusing points, make internal layer and outer metallurgical melting fully, the THICKNESS CONTROL of the metallurgical melting layer that ectonexine is formed is at about 1~2mm, the thickness of the production tube metallurgical melting layer that obtains through extruding or hot rolling processing is approximately 0.1~0.3mm, several times or tens times of the fusion bed thickness of the bimetal tube that the thickness of this metallurgical melting layer obtains than explosion weld process, the transition of ectonexine composition is mild, alleviated the interfacial stress between the ectonexine greatly, avoided the stress of ectonexine interface to concentrate, ectonexine is difficult for layering, improve the security that the finished product bimetal tube uses, prolonged the service life of finished product bimetal tube.
The specific embodiment
The interior composition of layer 825 steel material of corrosion-resistant dual metal clad tube blank of the present invention are the compositions (seeing Table 2) of standard-required.Outer composition of layer can be any steel material that meets X52, X60 performance requirement (see Table 1 and table 3), and the following examples have only provided two kinds of materials that meet this performance requirement.
In the casting process, cooling device can adopt the cool water shower device that is positioned at pipe die top or the device of other cooling pipe die.
In the casting process, centrifugal speed determines that according to the pipe die internal diameter general pipe die rotating speed is 50~200G.Among the present invention, when cast was outer, the pipe die rotating speed was generally 700 rev/mins, and rotating speed is generally 830 rev/mins when cast internal layer and transition zone.Adopt electronic scale control poured weights during cast.
The fusing point of following embodiment 1~4 ectomesoderm molten metal is about about 1510~1520 ℃.The fusing point of internal layer 825 materials is about 1370~1400 ℃.
Embodiment 1
(1) 425 kilograms of outer sphere molten metals are fed centrifugal casting in the pipe dies, cast temperature is 1598 ℃, pours back cooling pipe die, treats that outer internal surface temperature begins to pour into a mould inner layer metal liquid when being cooled to about 1440 ℃ of left and right sides;
(2) 210 kilograms of inner layer metal liquid are fed centrifugal casting in the pipe die, cast temperature is 1530 ℃, pours the back cooling, treats to stop cooling after skin and internal layer all solidify, and this moment, internal layer and skin reached complete metallurgical melting.
Used molten metal composition sees Table 4 in the present embodiment, and the inside and outside composition of layer of gained pipe sees Table 5.The dimensional parameters of pipe surfaces externally and internally gained raw material pipe after machining sees Table 6.
In order to reduce the content of pipe small particles field trash, before the cast skin, in outer sphere molten metal, add 3 kilograms of fluorite covering slags.Before the cast internal layer, in the internal layer molten metal, add 1.5 kilograms of fluorite covering slags.In cast forward direction molten metal, add covering slag; make the cast of molten metal band slag; covering slag can float to the inner surface of pipe in action of centrifugal force; in its floating-upward process; granule field trash in the molten metal can be attached together with covering slag, forms the bigger slag inclusion of volume, at the action of centrifugal force float downward to inner surface; thereby significantly reduced the granule inclusion content in the pipe, improved the mechanical performance and the hot-working character of pipe.
Embodiment 2
(1) 420 kilograms of outer sphere molten metals are fed centrifugal casting in the pipe die, cast temperature is 1577 ℃, pours back cooling pipe die, treats that outer internal surface temperature begins to pour into a mould inner layer metal liquid when being cooled to about 1460 ℃;
(2) 220 kilograms of inner layer metal liquid are fed centrifugal casting in the pipe die, cast temperature is 1508 ℃, pours the back cooling, treats to stop after skin, internal layer all solidify cooling, and this moment, internal layer and skin reached complete metallurgical melting.
Used molten metal composition sees Table 4 in the present embodiment, and the inside and outside composition of layer of gained pipe sees Table 5.The dimensional parameters of pipe surfaces externally and internally gained raw material pipe after machining sees Table 6.
In order to reduce the content of pipe small particles field trash, before the cast skin, in outer sphere molten metal, add 6 kilograms of fluorite covering slags.Before the cast internal layer, in the internal layer molten metal, add 1.2 kilograms of fluorite covering slags.
Embodiment 3
(1) 425 kilograms of outer sphere molten metals are fed centrifugal casting in the pipe dies, cast temperature is 1591 ℃, pours back cooling pipe die, treats that outer internal surface temperature begins to pour into a mould inner layer metal liquid when being cooled to about 1450 ℃ of left and right sides;
(2) 215 kilograms of inner layer metal liquid are fed centrifugal casting in the pipe die, cast temperature is 1460 ℃, pours the back cooling, treats to stop after skin, internal layer all solidify cooling, and this moment, internal layer and skin reached complete metallurgical melting.
Used molten metal composition sees Table 4 in the present embodiment, and the inside and outside composition of layer of gained pipe sees Table 5.The dimensional parameters of pipe surfaces externally and internally gained raw material pipe after machining sees Table 6.
In order to reduce the content of pipe small particles field trash, before the cast skin, in outer sphere molten metal, add 2.3 kilograms of fluorite covering slags.Before the cast internal layer, in the internal layer molten metal, add 3.1 kilograms of fluorite covering slags.
Embodiment 4
(1) 420 kilograms of outer sphere molten metals are fed centrifugal casting in the pipe die, cast temperature is 1577 ℃, pours back cooling pipe die, treats that outer internal surface temperature begins to pour into a mould inner layer metal liquid when being cooled to about 1470 ℃;
(2) 225 kilograms of inner layer metal liquid are fed centrifugal casting in the pipe die, cast temperature is 1520 ℃, pours the back cooling, treats to stop after skin, internal layer all solidify cooling, and this moment, internal layer and skin reached complete metallurgical melting.
Used molten metal composition sees Table 4 in the present embodiment, and the inside and outside composition of layer of gained pipe sees Table 5.The dimensional parameters of pipe surfaces externally and internally gained raw material pipe after machining sees Table 6.
In order to reduce the content of pipe small particles field trash, before the cast skin, in outer sphere molten metal, add 4.2 kilograms of fluorite covering slags.Before the cast internal layer, in the internal layer molten metal, add 3 kilograms of fluorite covering slags.
Table 6 raw material pipe dimensional parameters
Project External diameter/mm Internal diameter/mm Outer layer thickness/mm Interior layer thickness/mm Length/mm
Embodiment 1 262.8 111.0 41.6 34.4 1600
Embodiment 2 261.9 110.0 41.9 34.1 1600
Embodiment 3 262.4 111.5 40.8 34.7 1600
Embodiment 4 262.3 111.7 41.0 34.2 1600
Corrosion-resistant dual metal clad tube blank surfaces externally and internally of the present invention obtains the raw material pipe after machining, the raw material pipe is again after rolling or extruding, promptly obtain X50/825, X60/825 corrosion-resistant dual metal finished product seamless pipe, this bimetallic production tube is mainly used in the oil transportation under the high corrosive environment.The outer performance of production tube sees Table 7:
The outer performance of table 7 production tube
Project Yield strength MPa Tensile strength MPa Percentage elongation %
Embodiment 1 435 590 27
Embodiment 2 425 555 25
Embodiment 3 445 560 30
Embodiment 4 450 580 28
By table 7 as seen, the outer performance of the production tube that finally obtains after processing of gained pipe all meets the performance requirement of X52, X60.
Above-described embodiment is described preferred implementation of the present invention; be not that scope of the present invention is limited; design under the prerequisite of spirit not breaking away from the present invention; various distortion and improvement that those of ordinary skills make technical scheme of the present invention all should fall in the definite protection domain of claims of the present invention.

Claims (5)

1, a kind of production method of corrosion-resistant dual metal clad tube blank is characterized in that may further comprise the steps:
(1) outer sphere molten metal is fed centrifugal casting in the pipe die, pour back cooling, treat that outer internal surface temperature is cooled to and begin to pour into a mould inner layer metal liquid when being lower than 50 ℃~70 ℃ of outer sphere molten metal fusing points;
(2) inner layer metal liquid is fed centrifugal casting in the pipe die, pour the back cooling, treat to stop cooling after skin and internal layer all solidify, this moment, internal layer and skin reached complete metallurgical melting;
Wherein, described skin is X52 or X60 steel material, and internal layer is 825 steel material.
2, production method according to claim 1; it is characterized in that: in (1) step forward direction outer sphere molten metal, add covering slag; add covering slag in (2) step forward direction inner layer metal liquid, described covering slag is a fluorite, and addition is 0.5%~1.5% of a molten metal weight.
3, production method according to claim 1 and 2 is characterized in that: the addition of described covering slag is 0.8%~1.1% of a molten metal weight.
4, the corrosion-resistant dual metal clad tube blank that makes according to claim 1 or 2 described production methods.
5, the corrosion-resistant dual metal clad tube blank that makes according to the described production method of claim 3.
CN2009100774961A 2009-02-17 2009-02-17 Corrosion-resistant dual metal clad tube blank and manufacturing method thereof CN101530898B (en)

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101804450A (en) * 2010-04-08 2010-08-18 新兴铸管股份有限公司 20/321H corrosion-resisting double-metal composite tube and manufacturing process thereof
CN102527766A (en) * 2011-10-28 2012-07-04 刘建彬 Manufacture method for high-alloy seamless pipe
CN102553962A (en) * 2012-01-30 2012-07-11 新兴铸管股份有限公司 Rolling forming method for centrifugal casting composite pipe
WO2013004018A1 (en) * 2011-07-07 2013-01-10 长沙中联重工科技发展股份有限公司 Concrete conveyor pipe and manufacturing method therefor
CN103697244A (en) * 2013-12-12 2014-04-02 四川鑫鼎新材料有限公司 Bimetallic wear-resisting seamless composite steel tube and preparation method thereof
CN104190901A (en) * 2014-07-28 2014-12-10 宁国市大泉机械有限公司 Machining method of seamless steel tube
CN105170934A (en) * 2015-09-23 2015-12-23 定州市金华蓝天汽车零部件有限公司 Centrifugal casting method for composite ring with Q345B steel inner layer and 40Cr steel outer layer
CN105798269A (en) * 2016-04-06 2016-07-27 四川鑫鼎新材料有限公司 Preparation method of nickel-based duplex metal composite used for fluorine chemical production equipment
CN107030113A (en) * 2017-04-21 2017-08-11 孙学贤 Large diameter steel pipe continuous casting and tandem rolling production method, composite steel tube continuous casting and tandem rolling production method, clad steel plate continuous casting and tandem rolling production method
CN108889918A (en) * 2018-06-28 2018-11-27 卓然(靖江)设备制造有限公司 Thin-wall bimetal pipe is centrifuged production method
CN108907132A (en) * 2018-06-28 2018-11-30 卓然(靖江)设备制造有限公司 304L/SA210 hot rolling bimetallic pipe billet production method
CN109047700A (en) * 2018-07-19 2018-12-21 柳州市创科复合金属陶瓷制品有限公司 A kind of compound body of roll production method of bimetallic

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101804450A (en) * 2010-04-08 2010-08-18 新兴铸管股份有限公司 20/321H corrosion-resisting double-metal composite tube and manufacturing process thereof
WO2013004018A1 (en) * 2011-07-07 2013-01-10 长沙中联重工科技发展股份有限公司 Concrete conveyor pipe and manufacturing method therefor
CN102527766A (en) * 2011-10-28 2012-07-04 刘建彬 Manufacture method for high-alloy seamless pipe
CN102553962A (en) * 2012-01-30 2012-07-11 新兴铸管股份有限公司 Rolling forming method for centrifugal casting composite pipe
CN103697244A (en) * 2013-12-12 2014-04-02 四川鑫鼎新材料有限公司 Bimetallic wear-resisting seamless composite steel tube and preparation method thereof
CN103697244B (en) * 2013-12-12 2016-04-20 四川鑫鼎新材料有限公司 Seamless composite steel tube of a kind of bimetal wear resistant and preparation method thereof
CN104190901A (en) * 2014-07-28 2014-12-10 宁国市大泉机械有限公司 Machining method of seamless steel tube
CN105170934A (en) * 2015-09-23 2015-12-23 定州市金华蓝天汽车零部件有限公司 Centrifugal casting method for composite ring with Q345B steel inner layer and 40Cr steel outer layer
CN105170934B (en) * 2015-09-23 2017-07-25 定州市金华蓝天汽车零部件有限公司 A kind of internal layer Q345B outer layers 40Cr is combined the centre spinning method of ring
CN105798269B (en) * 2016-04-06 2018-08-31 四川鑫鼎新材料有限公司 The preparation method of Ni-based double metallic composite material for fluorine chemical production equipment
CN105798269A (en) * 2016-04-06 2016-07-27 四川鑫鼎新材料有限公司 Preparation method of nickel-based duplex metal composite used for fluorine chemical production equipment
CN107030113A (en) * 2017-04-21 2017-08-11 孙学贤 Large diameter steel pipe continuous casting and tandem rolling production method, composite steel tube continuous casting and tandem rolling production method, clad steel plate continuous casting and tandem rolling production method
CN107030113B (en) * 2017-04-21 2019-04-16 孙学贤 Large diameter steel pipe continuous casting and tandem rolling production method, composite steel tube continuous casting and tandem rolling production method, clad steel plate continuous casting and tandem rolling production method
CN108889918A (en) * 2018-06-28 2018-11-27 卓然(靖江)设备制造有限公司 Thin-wall bimetal pipe is centrifuged production method
CN108907132A (en) * 2018-06-28 2018-11-30 卓然(靖江)设备制造有限公司 304L/SA210 hot rolling bimetallic pipe billet production method
CN109047700A (en) * 2018-07-19 2018-12-21 柳州市创科复合金属陶瓷制品有限公司 A kind of compound body of roll production method of bimetallic

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