CN102107233B - Method for manufacturing steel/copper composite welded pipe - Google Patents
Method for manufacturing steel/copper composite welded pipe Download PDFInfo
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- CN102107233B CN102107233B CN2010106019465A CN201010601946A CN102107233B CN 102107233 B CN102107233 B CN 102107233B CN 2010106019465 A CN2010106019465 A CN 2010106019465A CN 201010601946 A CN201010601946 A CN 201010601946A CN 102107233 B CN102107233 B CN 102107233B
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Abstract
The invention relates to a method for manufacturing a steel/copper composite welded pipe. The method comprises the following steps: cleaning the surfaces of a steel band and a copper band respectively, wherein the steel band and copper band are used as raw materials; roughening the composite surfaces of the steel band and copper band; heating the steel band to 750+/-30 DEG C, and heating the copper band to 550+/-30 DEG C; attaching the composite surface of the steel band and the composite surface of the copper band, and rolling and feeding the attached composite surfaces in a cold rolling mill to compound; sequentially performing annealing, rolling, annealing, flattening and striping on the compounded steel/copper composite band to obtain the steel/copper composite band with the required width; delivering the steel/copper composite band to a pipe forming unit to form the pipe; and sequentially performing welding, copper supplementing, sizing, flaw detection, closing, leakage check, annealing, straightening, cutting, packing and storing in a storehouse. The method disclosed by the invention is applicable to the pipes for the industrial large condensers and radiators.
Description
Technical field
The present invention relates to the manufacturing approach of metal composite pipe material, be meant the manufacturing approach of the compound welded tube of a kind of steel copper especially.
Background technology
Copper pipe is because its anti-oxidant, corrosion-resistant, advantages such as tensile property is good, good heat dissipation, so be widely used at present in machine tube connector inside and outside air-conditioning condenser and evaporimeter, condenser for refrigerator and evaporimeter, the air-conditioning and industrial large condenser, the radiator.The manufacturing approach of copper pipe has two kinds: cold-drawing process and pipe crimping welding procedure.Cold-drawing process is that employing hot rolling seamless copper pipe is a material, through obtaining the copper pipe of required caliber after the multiple tracks drawing procedure.The pipe crimping welding procedure is that the employing copper strips is a parent material, in the tubulation shaping machine set, carries out tube forming, forms the copper pipe tube, carries out then making copper pipe after the solid-state high-frequency welding.
But owing to the resource scarcity of copper product at present, cost an arm and a leg, thus use the cost of copper pipe very high, and also the weight of copper pipe is heavier.Therefore people are attempting to seek a kind of tubing that can substitute copper pipe always, and what wherein people expected easily is steel pipe, because the aboundresources of steel, cost are low, and the proportion of steel is less, and copper weight is also lighter relatively.But compare with copper pipe, anti-oxidant, the corrosion-resistant and mechanical performance of steel pipe is all relatively poor, replaces copper pipe can not meet the demands in a lot of occasions with pure steel pipe.The manufacturing approach of steel pipe is similar with the manufacturing approach of copper pipe, comprises cold-drawing process and pipe crimping welding procedure equally.Cold-drawing process is that the employing hot rolled seamless steel tube is a material, through obtaining the steel pipe of required caliber after the multiple tracks drawing procedure.The pipe crimping welding procedure is that the employing steel band is a parent material, in the tubulation shaping machine set, carries out tube forming, forms the steel pipe tube, carries out then making steel pipe after the solid-state high-frequency welding.In transportation,, usually steel coil strip is processed coil of strip for convenient transportation.
In order to make full use of the advantage separately of steel copper, a kind of steel copper multiple tube has appearred in the market, and its manufacturing approach mainly contains methods such as expanded joint, drawing, extruding.These methods all are to adopt surface-treated steel pipe and copper pipe suit mutually, then through expanded joint, drawbench or extruder, carry out corresponding expanded joint, drawing, extruding or above-mentioned three kinds of method synthesis are used, and so back and forth could produce the copper multiple tube of tapping.These existing method lumber recoverys are low, pipe length is short, efficient is low.The more important thing is that steel copper multiple tube that these existing methods make is because of accomplishing the mechanical bond of steel copper faying face; And such faying face is in the processing and use of back passage; Phenomenons such as peeling off between the steel copper, layering, gauffer be can produce, the application and the popularization of steel copper multiple tube had a strong impact on.
Summary of the invention
Technical problem to be solved by this invention is: a kind of manufacturing approach of making lumber recovery height, the compound welded tube of steel copper that production efficiency is high is provided; And use best in quality, the good mechanical property of the steel copper multiple tube that this method makes, can satisfy the needs of following process and use.
For addressing the above problem, the technical scheme that the present invention adopts is: the manufacturing approach of the compound welded tube of a kind of steel copper comprises the steps:
(1), makes steel copper composite band: (a), use steel band as raw material; After steel band carried out the surface acid-washing clean; Be cold-rolled to the thickness of 3.5 ± 0.1mm, carry out the annealing first time then, annealing temperature is 880 ± 5 ℃; Annealing time is no less than 6 hours, and the composite surface to steel band after annealing is accomplished for the first time carries out the hacking processing;
(b), be after the copper strips of 0.3 ± 0.01mm carries out surface cleaning processing with thickness, the composite surface of copper strips is carried out hacking handles;
(c), simultaneously the steel band behind the hacking in (a) step is heated to 750 ± 30 ℃; Copper strips behind the hacking in (b) step is heated to 550 ± 30 ℃; It is rolling compound to send into cold-rolling mill after then the composite surface of the composite surface of steel band and copper strips being fitted, and the gross thickness of controlling the steel copper composite band after compound is 1.5 ± 0.05mm;
(d), the steel copper composite band after compound is carried out second time annealing under gas shield, annealing temperature is 880 ± 5 ℃, and annealing time is no less than 6 hours; Then the demand according to final tubing is rolling to desired thickness, and this thickness is the wall thickness of the compound welded tube of steel copper of required weldering system, then anneals for the third time; Annealing temperature is 880 ± 5 ℃, and annealing time is no less than 6 hours, pass through smooth processing at last after; Steel copper composite band is carried out itemize, obtain the steel copper composite band of required width;
(2), tubulation:
(a), moulding: the steel copper composite band that makes in the step () is delivered to carries out tube forming in the tubulation shaping machine set, form steel copper composite pipes barrel, the copper layer is positioned at the outside during tube forming, the steel layer is positioned at the inside;
(b), welding: the steel copper composite pipes barrel after the forming is welded;
(c), mend copper: after the outer burr of the commissure of the compound welded tube of steel copper that welding is made is removed, with being sprayed on the weld seam after the copper wire fusion;
(d), sizing: the compound welded tube of steel copper that will mend copper carries out tube outer diameter size sizing through sizing mill;
(e), flaw detection: the weld seam to the compound welded tube of steel copper behind the sizing carries out eddy current inspection, and the inspection weld seam has or not fault;
(f), closing quotation: the compound welded tube of steel copper that will detect a flaw qualified is wound into plate-like;
(g), test leakage: the compound welded tube of steel copper after will closing is inflated under water and is tested leakage;
(h), annealing: will test the Lou qualified compound welded tube of steel copper and carry out the continous way annealing while aligning, annealing temperature is 750 ± 10 ℃, adopts inert gas shielding during annealing;
(i), aligning: the compound welded tube of steel copper to after the annealing is aligned further;
(j), cutting: the size according to client's needs is cut the compound welded tube of steel copper after aligning;
(k), packaging and warehousing: the compound welded tube packaging and warehousing of the steel copper after will cutting.
The described steel band of (a) operation is the ultra-low carbon hot rolling steel band in above-mentioned step () the manufacturing steel copper composite band, and its carbon content is below 0.003.
The roll-force that above-mentioned step () is made the described cold-rolling mill of (c) operation in the steel copper composite band is 700～1200 tons.
Above-mentioned step (one) is made in (d) operation of steel copper composite band, and the steel copper composite band behind the itemize is carried out rolling; Also comprise the uncoiling operation in step (two) tubulation before (a) molding procedure and shear the butt welding operation, wherein uncoiling operation is: the steel copper composite band after the rolling in the step () is carried out uncoiling; Wherein shearing the butt welding operation is: after the steel copper composite band after the uncoiling is carried out surface clean, carry out butt welding after the afterbody shearing with head and the last volume of back one volume.
Adopt solid-state high-frequency welding in above-mentioned step (two) tubulation in (b) welding sequence.
(g) tests in the operation Lou under water that the air pressure of inflation is 10kg in above-mentioned step (two) tubulation.
The invention has the beneficial effects as follows: the manufacturing approach of the above-mentioned compound welded tube of a kind of steel copper is compared with the manufacturing approach of existing steel copper multiple tube and had the following advantages: manufacturing approach of the present invention can realize that lumber recovery is high, efficient is high, batch is big, the cost lowland produces the compound welded tube of steel copper.
The compound welded tube of steel copper that uses manufacturing approach of the present invention to make has anti-oxidant, corrosion-resistant, advantages such as tensile property is good, good heat dissipation, and cost is lower, weight is lighter, best in quality, good mechanical property, can satisfy the needs of following process and use.
The specific embodiment
Through specific embodiment the manufacturing approach of the compound welded tube of a kind of steel copper of the present invention is done further to describe in detail below.
Embodiment 1
The manufacturing approach of the compound welded tube of a kind of steel copper comprises the steps:
(1), make steel copper composite band: (a), used thickness be the ultra-low carbon hot rolling steel band of 4.5mm as raw material, its carbon content is 0.003, and steel band is carried out the surface acid-washing clean; After removing the iron rust and dirt of steel strip surface; Be cold-rolled to the thickness of 3.51mm, carry out the annealing first time then, annealing temperature is 885 ℃; Annealing time is 8 hours, uses wire brush that the composite surface of steel band is carried out the hacking processing after annealing is accomplished for the first time;
(b), be that the copper strips of 0.4mm carries out surface cleaning processing with thickness, remove the dirt and attachment of copper strip surface after, use wire brush that the composite surface of copper strips is carried out hacking and handle;
(c), simultaneously the steel band behind the hacking in (a) step is heated to 770 ℃; Copper strips behind the hacking in (b) step is heated to 570 ℃, and the cold-rolling mill of sending into roll-force after then the composite surface of the composite surface of steel band and copper strips being fitted and be 800 tons is rolling compound, and the gross thickness of controlling the steel copper composite band after compound is 1.55mm; Under this rolling condition; The atom infiltration takes place between the composite surface of steel band and the composite surface of copper strips each other, realize metallurgical binding, such faying face can satisfy the needs of following process and use; In the processing and use of back passage, can not produce phenomenons such as peeling off between the steel copper, layering, gauffer;
(d), with the steel copper composite band after compound in bell furnace, and under gas shield, carry out second time annealing, annealing temperature is 885 ℃; Annealing time is 8 hours, and then the demand according to final tubing is rolling to desired thickness, and this thickness is the wall thickness of the compound welded tube of steel copper of required weldering system; Then anneal for the third time, annealing temperature is 885 ℃, and annealing time is 8 hours; After passing through smooth processing at last, steel copper composite band is carried out itemize, the width of itemize is confirmed according to the caliber of final tubing; Obtain the steel copper composite band of required width, the steel copper composite band after itemize is accomplished is carried out rolling;
(2), tubulation:
(a), uncoiling: the steel copper composite band after the rolling in the step () is placed on carries out uncoiling on the uncoiler;
(b), shearing the butt welding operation is: after the steel copper composite band after the uncoiling is carried out surface clean; Carry out butt welding after the afterbody shearing with head and the last volume of back one volume; Reaching the continuous purpose of steel copper composite band, thereby can make the long compound welded tube of steel copper of pipe length;
(c), moulding: will shear steel copper composite band to postwelding and be delivered to and carry out tube forming in the tubulation shaping machine set, the total length one-shot forming forms steel copper composite pipes barrel, and the copper layer is positioned at the outside during tube forming, the steel layer is positioned at the inside;
(d), welding: the steel copper composite pipes barrel after the forming is carried out solid-state high-frequency welding;
(e), mend copper: after the outer burr of the commissure of the compound welded tube of steel copper that welding is made is removed, be sprayed on the weld seam after dissolving copperwelding rod through thermal-flame;
(f), sizing: the compound welded tube of steel copper that will mend copper carries out tube outer diameter size sizing through sizing mill;
(g), flaw detection: the weld seam to the compound welded tube of steel copper behind the sizing carries out eddy current inspection, and the inspection weld seam has or not fault;
(h), closing quotation: the compound welded tube of steel copper that will detect a flaw qualified is wound into plate-like;
(i), test leakage: the compound welded tube of steel copper after will closing is inflated under water and is tested leakage, and wherein air pressure is 10kg;
(j), annealing: will test the Lou qualified compound welded tube of steel copper and carry out the continous way annealing while aligning, annealing temperature is 750 ℃, adopts inert gas shielding during annealing, to guarantee the compound welded tube light of steel copper;
(k), aligning: the compound welded tube of the steel copper after the annealing is imported straightener align further;
(l), cutting: the size according to client's needs is cut the compound welded tube of steel copper after aligning;
(m), packaging and warehousing: the compound welded tube packaging and warehousing of the steel copper after will cutting.
Embodiment 2
The manufacturing approach of the compound welded tube of a kind of steel copper comprises the steps:
(1), make steel copper composite band: (a), used thickness be the ultra-low carbon hot rolling steel band of 4.5mm as raw material, its carbon content is 0.003, and steel band is carried out the surface acid-washing clean; After removing the iron rust and dirt of steel strip surface; Be cold-rolled to the thickness of 3.4mm, carry out the annealing first time then, annealing temperature is 875 ℃; Annealing time is 7 hours, uses wire brush that the composite surface of steel band is carried out the hacking processing after annealing is accomplished for the first time;
(b), be that the copper strips of 0.29mm carries out surface cleaning processing with thickness, remove the dirt and attachment of copper strip surface after, use wire brush that the composite surface of copper strips is carried out hacking and handle;
(c), simultaneously the steel band behind the hacking in (a) step is heated to 720 ℃; Copper strips behind the hacking in (b) step is heated to 520 ℃, and the cold-rolling mill of sending into roll-force after then the composite surface of the composite surface of steel band and copper strips being fitted and be 1100 tons is rolling compound, and the gross thickness of controlling the steel copper composite band after compound is 1.45mm; Under this rolling condition; The atom infiltration takes place between the composite surface of steel band and the composite surface of copper strips each other, realize metallurgical binding, such faying face can satisfy the needs of following process and use; In the processing and use of back passage, can not produce phenomenons such as peeling off between the steel copper, layering, gauffer;
(d), with the steel copper composite band after compound in bell furnace, and under gas shield, carry out second time annealing, annealing temperature is 875 ℃; Annealing time is 7 hours, and then the demand according to final tubing is rolling to desired thickness, and this thickness is the wall thickness of the compound welded tube of steel copper of required weldering system; Then anneal for the third time, annealing temperature is 875 ℃, and annealing time is 7 hours; After passing through smooth processing at last, steel copper composite band is carried out itemize, the width of itemize is confirmed according to the caliber of final tubing; Obtain the steel copper composite band of required width, the steel copper composite band after itemize is accomplished is carried out rolling;
(2), tubulation:
(a), uncoiling: the steel copper composite band after the rolling in the step () is placed on carries out uncoiling on the uncoiler;
(b), shearing the butt welding operation is: after the steel copper composite band after the uncoiling is carried out surface clean; Carry out butt welding after the afterbody shearing with head and the last volume of back one volume; Reaching the continuous purpose of steel copper composite band, thereby can make the long compound welded tube of steel copper of pipe length;
(c), moulding: will shear steel copper composite band to postwelding and be delivered to and carry out tube forming in the tubulation shaping machine set, the total length one-shot forming forms steel copper composite pipes barrel, and the copper layer is positioned at the outside during tube forming, the steel layer is positioned at the inside;
(d), welding: the steel copper composite pipes barrel after the forming is carried out solid-state high-frequency welding;
(e), mend copper: after the outer burr of the commissure of the compound welded tube of steel copper that welding is made is removed, be sprayed on the weld seam after dissolving copperwelding rod through thermal-flame;
(f), sizing: the compound welded tube of steel copper that will mend copper carries out tube outer diameter size sizing through sizing mill;
(g), flaw detection: the weld seam to the compound welded tube of steel copper behind the sizing carries out eddy current inspection, and the inspection weld seam has or not fault;
(h), closing quotation: the compound welded tube of steel copper that will detect a flaw qualified is wound into plate-like;
(i), test leakage: the compound welded tube of steel copper after will closing is inflated under water and is tested leakage, and wherein air pressure is 10kg;
(j), annealing: will test the Lou qualified compound welded tube of steel copper and carry out the continous way annealing while aligning, annealing temperature is 740 ℃, adopts inert gas shielding during annealing, to guarantee the compound welded tube light of steel copper;
(k), aligning: the compound welded tube of the steel copper after the annealing is imported straightener align further;
(l), cutting: the size according to client's needs is cut the compound welded tube of steel copper after aligning;
(m), packaging and warehousing: the compound welded tube packaging and warehousing of the steel copper after will cutting.
Embodiment 3
The manufacturing approach of the compound welded tube of a kind of steel copper comprises the steps:
(1), make steel copper composite band: (a), used thickness be the ultra-low carbon hot rolling steel band of 4.5mm as raw material, its carbon content is 0.002, and steel band is carried out the surface acid-washing clean; After removing the iron rust and dirt of steel strip surface; Be cold-rolled to the thickness of 3.5mm, carry out the annealing first time then, annealing temperature is 880 ℃; Annealing time is 6 hours, uses wire brush that the composite surface of steel band is carried out the hacking processing after annealing is accomplished for the first time;
(b), be that the copper strips of 0.3mm carries out surface cleaning processing with thickness, remove the dirt and attachment of copper strip surface after, use wire brush that the composite surface of copper strips is carried out hacking and handle;
(c), simultaneously the steel band behind the hacking in (a) step is heated to 750 ℃; Copper strips behind the hacking in (b) step is heated to 550 ℃, and the cold-rolling mill of sending into roll-force after then the composite surface of the composite surface of steel band and copper strips being fitted and be 1000 tons is rolling compound, and the gross thickness of controlling the steel copper composite band after compound is 1.5mm; Under this rolling condition; The atom infiltration takes place between the composite surface of steel band and the composite surface of copper strips each other, realize metallurgical binding, such faying face can satisfy the needs of following process and use; In the processing and use of back passage, can not produce phenomenons such as peeling off between the steel copper, layering, gauffer;
(d), with the steel copper composite band after compound in bell furnace, and under gas shield, carry out second time annealing, annealing temperature is 880 ℃; Annealing time is 6 hours, and then the demand according to final tubing is rolling to desired thickness, and this thickness is the wall thickness of the compound welded tube of steel copper of required weldering system; Then anneal for the third time, annealing temperature is 880 ℃, and annealing time is 6 hours; After passing through smooth processing at last, steel copper composite band is carried out itemize, the width of itemize is confirmed according to the caliber of final tubing; Obtain the steel copper composite band of required width, the steel copper composite band after itemize is accomplished is carried out rolling;
(2), tubulation:
(a), uncoiling: the steel copper composite band after the rolling in the step () is placed on carries out uncoiling on the uncoiler;
(b), shearing the butt welding operation is: after the steel copper composite band after the uncoiling is carried out surface clean; Carry out butt welding after the afterbody shearing with head and the last volume of back one volume; Reaching the continuous purpose of steel copper composite band, thereby can make the long compound welded tube of steel copper of pipe length;
(c), moulding: will shear steel copper composite band to postwelding and be delivered to and carry out tube forming in the tubulation shaping machine set, the total length one-shot forming forms steel copper composite pipes barrel, and the copper layer is positioned at the outside during tube forming, the steel layer is positioned at the inside;
(d), welding: the steel copper composite pipes barrel after the forming is carried out solid-state high-frequency welding;
(e), mend copper: after the outer burr of the commissure of the compound welded tube of steel copper that welding is made is removed, be sprayed on the weld seam after dissolving copperwelding rod through thermal-flame;
(f), sizing: the compound welded tube of steel copper that will mend copper carries out tube outer diameter size sizing through sizing mill;
(g), flaw detection: the weld seam to the compound welded tube of steel copper behind the sizing carries out eddy current inspection, and the inspection weld seam has or not fault;
(h), closing quotation: the compound welded tube of steel copper that will detect a flaw qualified is wound into plate-like;
(i), test leakage: the compound welded tube of steel copper after will closing is inflated under water and is tested leakage, and wherein air pressure is 10kg;
(j), annealing: will test the Lou qualified compound welded tube of steel copper and carry out the continous way annealing while aligning, annealing temperature is 760 ℃, adopts inert gas shielding during annealing, to guarantee the compound welded tube light of steel copper;
(k), aligning: the compound welded tube of the steel copper after the annealing is imported straightener align further;
(l), cutting: the size according to client's needs is cut the compound welded tube of steel copper after aligning;
(m), packaging and warehousing: the compound welded tube packaging and warehousing of the steel copper after will cutting.
The manufacturing approach of the above-mentioned compound welded tube of a kind of steel copper is compared with the manufacturing approach of existing steel copper multiple tube and had the following advantages: manufacturing approach of the present invention can realize that lumber recovery is high, efficient is high, batch is big, the cost lowland produces the compound welded tube of steel copper.
The compound welded tube of steel copper that uses manufacturing approach of the present invention to make has anti-oxidant, corrosion-resistant, advantages such as tensile property is good, good heat dissipation, and cost is lower, weight is lighter, best in quality, good mechanical property, can satisfy the needs of following process and use.
Claims (5)
1. the manufacturing approach of the compound welded tube of steel copper is characterized in that: comprise the steps:
(1), makes steel copper composite band: (a), use steel band as raw material; After steel band carried out the surface acid-washing clean; Be cold-rolled to the thickness of 3.5 ± 0.1mm, carry out the annealing first time then, annealing temperature is 880 ± 5 ℃; Annealing time is no less than 6 hours, and the composite surface to steel band after annealing is accomplished for the first time carries out the hacking processing;
(b), be after the copper strips of 0.3 ± 0.01mm carries out surface cleaning processing with thickness, the composite surface of copper strips is carried out hacking handles;
(c), simultaneously the steel band behind the hacking in (a) step is heated to 750 ± 30 ℃; Copper strips behind the hacking in (b) step is heated to 550 ± 30 ℃; It is rolling compound to send into cold-rolling mill after then the composite surface of the composite surface of steel band and copper strips being fitted, and the gross thickness of controlling the steel copper composite band after compound is 1.5 ± 0.05mm;
(d), the steel copper composite band after compound is carried out second time annealing under gas shield, annealing temperature is 880 ± 5 ℃, and annealing time is no less than 6 hours; Then the demand according to final tubing is rolling to desired thickness, and this thickness is the wall thickness of the compound welded tube of steel copper of required weldering system, then anneals for the third time; Annealing temperature is 880 ± 5 ℃, and annealing time is no less than 6 hours, pass through smooth processing at last after; Steel copper composite band is carried out itemize, obtain the steel copper composite band of required width;
(2), tubulation:
(a), moulding: the steel copper composite band that makes in the step () is delivered to carries out tube forming in the tubulation shaping machine set, form steel copper composite pipes barrel, the copper layer is positioned at the outside during tube forming, the steel layer is positioned at the inside;
(b), welding: the steel copper composite pipes barrel after the forming is welded;
(c), mend copper: after the outer burr of the commissure of the compound welded tube of steel copper that welding is made is removed, with being sprayed on the weld seam after the copper wire fusion;
(d), sizing: the compound welded tube of steel copper that will mend copper carries out tube outer diameter size sizing through sizing mill;
(e), flaw detection: the weld seam to the compound welded tube of steel copper behind the sizing carries out eddy current inspection, and the inspection weld seam has or not fault;
(f), closing quotation: the compound welded tube of steel copper that will detect a flaw qualified is wound into plate-like;
(g), test leakage: the compound welded tube of steel copper after will closing is inflated under water and is tested leakage;
(h), annealing: will test the Lou qualified compound welded tube of steel copper and carry out the continous way annealing while aligning, annealing temperature is 750 ± 10 ℃, adopts inert gas shielding during annealing;
(i), aligning: the compound welded tube of steel copper to after the annealing is aligned further;
(j), cutting: the size according to client's needs is cut the compound welded tube of steel copper after aligning;
(k), packaging and warehousing: the compound welded tube packaging and warehousing of the steel copper after will cutting.
2. the manufacturing approach of the compound welded tube of a kind of steel copper according to claim 1 is characterized in that: the roll-force that step () is made the described cold-rolling mill of (c) operation in the steel copper composite band is 700 ~ 1200 tons.
3. the manufacturing approach of the compound welded tube of a kind of steel copper according to claim 1 is characterized in that: step () is made in (d) operation of steel copper composite band, and the steel copper composite band behind the itemize is carried out rolling; Also comprise the uncoiling operation in step (two) tubulation before (a) molding procedure and shear the butt welding operation, wherein uncoiling operation is: the steel copper composite band after the rolling in the step () is carried out uncoiling; Wherein shearing the butt welding operation is: after the steel copper composite band after the uncoiling is carried out surface clean, carry out butt welding after the afterbody shearing with head and the last volume of back one volume.
4. the manufacturing approach of the compound welded tube of a kind of steel copper according to claim 1 is characterized in that: adopt solid-state high-frequency welding in step (two) tubulation in (b) welding sequence.
5. the manufacturing approach of the compound welded tube of a kind of steel copper according to claim 1 is characterized in that: (g) tests in the operation Lou under water that the air pressure of inflation is 10kg in step (two) tubulation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010106019465A CN102107233B (en) | 2010-12-23 | 2010-12-23 | Method for manufacturing steel/copper composite welded pipe |
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| CN2010106019465A CN102107233B (en) | 2010-12-23 | 2010-12-23 | Method for manufacturing steel/copper composite welded pipe |
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| CN102107233B true CN102107233B (en) | 2012-07-11 |
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| CN103506821A (en) * | 2012-06-28 | 2014-01-15 | 浙江兆隆合金股份有限公司 | Production method of low-stress copper steel compound welded pipe |
| CN113829005A (en) * | 2021-08-30 | 2021-12-24 | 江苏圣珀新材料科技有限公司 | Processing technology of high-strength nickel-based alloy welded pipe |
| CN115401412A (en) * | 2022-08-22 | 2022-11-29 | 江苏圣珀新材料科技有限公司 | Pipe welding method for nickel-based alloy S31254 |
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| CN1053128C (en) * | 1995-06-22 | 2000-06-07 | 冶金工业部钢铁研究总院 | Process of two layer lead soldered tube |
| JP4466320B2 (en) * | 2004-10-27 | 2010-05-26 | Ｊｆｅスチール株式会社 | Manufacturing method of low yield ratio ERW steel pipe for line pipe |
| CN100463770C (en) * | 2007-04-24 | 2009-02-25 | 西安兰方实业有限公司 | Process for producing double-layer wrapped welding tube used for connecting indoor/outdoor units of air conditioner |
| CN101480671B (en) * | 2009-02-13 | 2010-12-29 | 西安兰方实业有限公司 | Technique for producing double-layer copper brazing steel tube for air-conditioner |
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