CN106311796A - Manufacturing method of metal composite pipe - Google Patents

Manufacturing method of metal composite pipe Download PDF

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Publication number
CN106311796A
CN106311796A CN201610677768.1A CN201610677768A CN106311796A CN 106311796 A CN106311796 A CN 106311796A CN 201610677768 A CN201610677768 A CN 201610677768A CN 106311796 A CN106311796 A CN 106311796A
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CN
China
Prior art keywords
pipe
metal
composite
metal pipe
rolling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610677768.1A
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Chinese (zh)
Inventor
程明
谢君贤
李汝龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GUANGDONG JINGYI METAL CO Ltd
Original Assignee
GUANGDONG JINGYI METAL CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GUANGDONG JINGYI METAL CO Ltd filed Critical GUANGDONG JINGYI METAL CO Ltd
Priority to CN201610677768.1A priority Critical patent/CN106311796A/en
Publication of CN106311796A publication Critical patent/CN106311796A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B1/00Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/42Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for step-by-step or planetary rolling
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B9/00Measures for carrying out rolling operations under special conditions, e.g. in vacuum or inert atmosphere to prevent oxidation of work; Special measures for removing fumes from rolling mills
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes

Abstract

The invention relates to a manufacturing method of a metal composite pipe. The manufacturing method of the metal composite pipe is characterized by comprising the steps that more than two metal pipe blanks with the same length are prepared, and the metal pipe blank with the larger size sleeves the metal pipe blank with the smaller size, wherein the inside diameter of the metal pipe blank on the outer layer is 0.02-0.1mm larger than the outside diameter of the metal pipe blank on the inner layer; the two ends of the sleeved metal pipe blanks are welded together and fixed, so that a composite sleeve is obtained; whether the metal pipe blanks are heated or not is determined according to the material features of the metal pipe blanks, then the obtained composite sleeve is directly fed into a three-roll planetary rolling mill to conduct rolling deformation, nitrogen protection is conducted on the inner surface and the outer surface of each pipe blank in the rolling process, and cooling water is led to the pipe blanks to cool the pipe blanks which achieve acute temperature rise due to deformation heat, so that the rolled metal composite pipe with the smooth inner and outer walls and the uniform wall thickness is obtained; and the rolled metal composite pipe is processed through the flaw detection working procedure, the saw cutting working procedure, the cleaning working procedure and the heat treatment working procedure, and serves as a finished product to be processed through the last packaging link. The manufacturing method has the advantages that the wall thickness of the produced metal composite pipe is uniform, the production efficiency is high, and the application range is wide.

Description

The processing method of metal composite pipe material
Technical field
The processing method that the present invention relates to a kind of metal composite pipe material, particularly relates to many industry such as electronics, chemical industry, mining and metallurgy The bilayer applied in field or the serialization manufacture of multiple layer metal Material cladding tubing.
Background technology
Metal composite pipe material be utilize deform, explode, weld, cast, the method such as surface deposition is at one metal watch bread It is covered with the tubular composite material of another kind of or several metal, has both the mechanics of different metal, chemistry, calorifics and physical characteristic, extensively General for fields such as electronics, chemical industry, mining and metallurgy, electrical equipment, electric power, machinery, automobile, the energy and life appliances.With mine, smelting, electricity As a example by the bimetal wear resistant composite tube material that the field such as power and coal is conventional, by the side such as casting, deposition, SHS process Method is coated with the high-abrasive materials such as cast stone, macromolecule or pottery at the pipe material inner wall of ordinary steel material, forms low cost, long-life resistance to Mill composite pipe, significantly lowers pipe wear and destroys situation, it is to avoid the tremendous economic loss brought is changed in frequent shutdown maintenance.
At present, the processing method of metal composite pipe material has a variety of, may be generally divided into three major types: solid-solid phase is combined Method, it includes that Rolling compund, explosive welding, diffusion composite algorithm, extruding drawing are combined;Liquid and solid bonding me thod, it includes filling core Continuous metal cast process, spray deposition, casting method, reverse solidification method etc.;Liquid-liquid phase composite algorithm, it includes that electromagnetic continuous casting method, binode crystalline substance are even Continuous casting etc..
Solid-solid phase composite algorithm roll-bonding method, its ultimate principle is that metal pipe material is by under powerful pressure so that All there is plastic deformation in double layer of metal surface, surface metal-layer ruptures and exposes cleaning and the metal level that activates, the most powerful Pressure under form continuous print metallurgical binding, by the continuous enlargement of faying face in heat treatment process subsequently, formed firm Combination.Explosive welding process is to use priming system to assemble, and the priming system reserving appropriate length in base tube initiation ends connects Detonator, and the base assembled, bushing pipe are being detonated after pipe end assembles and bleeds with vacuum pump between sealing shroud, and base, bushing pipe, make Obtain inner and outer pipes and formed compound under instantaneous high-temperature and powerful explosive force effect.Extruding drawing composite algorithm is in bimetal tube Pipe is placed the mould of a taper, by extruding or by the way of the little head part of taper die connects mechanical pull mechanism, profit Make inner tube metal generation plastic deformation with taper die major part part enlarging effect, be fitted in the inner surface of outer tube.
The most easily there is different problems in above method, as inner and outer pipes adhesion is not enough, and high temperature operating conditions Under be susceptible to the phenomenon that inner and outer pipes comes off.Such as explosive welding process, owing to being short time set, there is the adhesion at each position not Uniform phenomenon, and then cause the thermal conductivity of composite pipe uneven, cause properties of product unstable.It addition, producing effect Rate, the various method of processing cost aspect also have the space of lifting further.
State Intellectual Property Office discloses the process technology of following several multiple tube:
The process technology of a kind of bimetal wear resistant composite tube, number of patent application is 201510411252.8, and its outer wall uses common Steel, liner uses high-chromium wear-resistant alloy material, application casting mode to process.
The manufacture method of a kind of stainless steel composite pipe, number of patent application is 201610025577.7, at stainless steel composite pipe The polymer layer of one layer of 0.01-0.1mm of Surface coating of inner tube, then this inner tube is put into inside carbon steel outer tube, carry out two kinds of steel The drawing molding of pipe.
A kind of composite bimetal pipe forming technology heated with hydraulic pressure coupling and system, number of patent application is 201510708758.5, its be first by base tube heat, afterwards base tube is set on bushing pipe together with, when base bushing pipe has worn After, bushing pipe is carried out hydraulic pressure bulging, first there is elastic deformation in bushing pipe;After hydraulic pressure pressure continues to strengthen, bushing pipe generation plasticity Deformation, bushing pipe outer surface fits tightly with base tube inner surface, continues afterwards to increase hydraulic pressure pressure, and bushing pipe becomes with base tube simultaneously Shape, now only there is elastic deformation in base tube;Hydraulic pressure bulging pressure reduces to zero afterwards, cools down bushing pipe;Finally by answering of being combined Closing pipe and naturally cool to room temperature, combination process completes.
A kind of preparation method of three-decker bimetal metallurgy multiple tube, number of patent application is 201510294327.9, its It is the method initially with lost foam casting, waters and cast out internal layer and the anti-corrosion pipe of outer layer thin-walled high alloy, then use sand mold casting Making the method combined with lost foam casting, with ectonexine high alloy steel pipe base as core, intermediate layer, with EPS moulding, is watered in outpouring Interbed carbon steel pipe, obtains stainless steel/carbon/rustless steel three-decker bimetal clad pipe blank.By double for resulting three-layer structure gold Belong to pipe, manufacture three-decker composite bimetal pipe through the expanding deformation of three roller hot rollings.
A kind of bimetallic stratiform multiple tube solid-liquid composite casting milling train, number of patent application is 201510480916.6, and it is to adopt Produce bimetallic stratiform double-metal layer shape multiple tube by solid-liquid casting-rolling technology, flash set technology combined with rolling technique, Realize the metallurgical binding of bi-metal interface.The coating metal of liquid-state casting solves drawing and is combined, rises that it is compound etc. to connect compound, spinning Tradition solid-solid phase combination process requires high problem to billet size and form accuracy.It is pointed out that above method is still Can not coordinate the concordance of machining accuracy and work efficiency, equipment condition requires high, forming technology complexity.
Summary of the invention
The processing method that it is an object of the invention to overcome the deficiencies in the prior art and provide a kind of metal composite pipe material, uses The uniform wall thickness of the metal composite pipe that the method produces, production efficiency is high, applied widely.
In order to achieve the above object, the technical scheme is that and be achieved in that, it is a kind of metal composite pipe material Processing method, it is characterised in that step is as follows:
Step one
Get out the metal pipe billet that two or more length is identical, metal pipe billet big for size is sleeved on the metal tube that size is little On base, the condition that adjacent two metal pipe billets should meet is: the internal diameter of outer layer metal pipe is more than the external diameter of inner layer metal pipe 0.02-0.1mm;
Step 2
The both ends of the surface of the metal pipe billet installed by set weld together fixing, obtain composite bushing;
Step 3
Material characteristic according to metal pipe billet, as the recrystallization temperature of metal pipe billet is 350 DEG C-700 DEG C, by gained in step 2 To composite bushing be sent directly into three-roller planetary rolling mill and carry out rolling deformation, the operation of rolling carries out nitrogen to pipe surfaces externally and internally Protection, and be passed through cooling water cool down due to the pipe of the violent temperature rise of deformation heat, obtain inside and outside wall smooth, uniform wall thickness Rolled metal composite pipe;
If the recrystallization temperature of metal pipe billet is higher than 700 DEG C, by treating, composite bushing obtained in step 2 is sent into heating furnace Processing, heating-up temperature is 950-1150 DEG C, makes every layer of pipe reach samming and be in red heat state, then by composite bushing after heating Base is sent into three-roller planetary rolling mill and is carried out rolling deformation, pipe surfaces externally and internally carries out in the operation of rolling nitrogen protection, and is passed through cold But water cools down due to the pipe of the violent temperature rise of deformation heat, obtains inside and outside wall rolled metal smooth, uniform wall thickness and is combined Tubing;
Step 4
Rolled metal composite pipe is carried out flaw detection, sawing, cleaning and heat treatment step, enters last as finished product Packaging link.
In the technical program, described metal pipe billet is the metal such as copper, aluminum or copper alloy, aluminium alloy, titanium alloy, general carbon The pipe of the alloy material such as steel, rustless steel.
The present invention compared with prior art, has the advantage that
1, can produce continuously, improve production efficiency, can be directly multiple to the metal of different size by changing plug and roll Close tubing to roll;
2, applied widely.
Accompanying drawing explanation
Fig. 1 is the structural representation of the metal composite pipe material embodiment one that the present invention produces;
Fig. 2 is the structural representation of the metal composite pipe material embodiment two that the present invention produces.
Detailed description of the invention
Below the detailed description of the invention of the present invention is described further.At this it should be noted that implement for these The explanation of mode is adapted to assist in and understands the present invention, but is not intended that limitation of the invention.Additionally, invention described below Just can be combined with each other as long as technical characteristic involved in each embodiment does not constitutes conflict each other.
Embodiment one
Step one
As it is shown in figure 1, get out fine aluminium base tube 1 and fine copper bushing pipe 2, the external diameter of fine aluminium base tube 1 is Φ 50mm, fine aluminium base tube 1 Pipe thickness is 20mm;The external diameter of fine copper bushing pipe 2 is Φ 60mm, and the pipe thickness of fine copper bushing pipe 2 is 5mm;They a length of 3000mm, is sleeved on fine copper bushing pipe 2 on fine aluminium base tube 1;
Step 2
The both ends of the surface overlapping the pipe installed in step one are welded together fixing, obtains Copper-Aluminum compound sleeve pipe;
Step 3
Owing to the recrystallization temperature of Copper-Aluminum compound sleeve pipe is about 450 DEG C, therefore by Copper-Aluminum compound sleeve pipe obtained in step 2 It is sent directly into three-roller planetary rolling mill and carries out rolling deformation, the operation of rolling carries out nitrogen protection to pipe surfaces externally and internally, and is passed through Cooling water cools down due to the pipe of the violent temperature rise of deformation heat, obtains that inside and outside wall is smooth, the copper/Al bimetal of uniform wall thickness Composite pipe, the external diameter of copper/Al bimetal composite pipe is Φ 30mm, and pipe thickness is 10mm, and wherein aluminum layer thickness is 8mm, pure copper layer thickness is 2mm, a length of 12500mm;
Step 4
The copper of rolling/Al bimetal composite pipe is carried out flaw detection, sawing, cleaning and heat treatment step, enters as finished product Enter last packaging link.
Product obtained by the present embodiment can use as the transmission connecting tube in power industry field.
When using three-roll planetary rolling to carry out bimetallic two-layer compound tubing, can be the most right by changing plug and roll The metal composite pipe material of different size carries out rolling processing, owing to pipe metal occurs under the effect of three-roll planetary rolling roll Rotational shear is flowed, and can form the most firm metallurgical binding under the local loading pressure of deformed area.
Embodiment two
Step one
As in figure 2 it is shown, get out rustless steel outer liner tube 1, straight carbon steel base tube 2 and stainless steel inner lining tube 3, rustless steel outer liner tube 1 External diameter is Φ 90mm, and the pipe thickness of rustless steel outer liner tube 1 is 5mm;The external diameter of straight carbon steel base tube is Φ 80mm, straight carbon steel base tube Pipe thickness be 20mm;The external diameter of stainless steel inner lining tube 3 is Φ 40mm, and the pipe thickness of stainless steel inner lining tube 3 is 5mm;It Length be 3000mm, straight carbon steel base tube 2 is sleeved on stainless steel inner lining tube 3, rustless steel outer liner tube 1 is sleeved on general On carbon steel base tube 2;
Step 2
The both ends of the surface overlapping the pipe installed in step one are welded together fixing, obtains three layers of sleeve pipe;
Step 3
The recrystallization temperature of rustless steel outer liner tube 1, straight carbon steel base tube 2 and stainless steel inner lining tube 3 is about 900 DEG C, therefore needs step Three layers of sleeve pipe obtained by rapid two are sent into heating furnace and are processed, and heating-up temperature is 950 DEG C, makes three layers of sleeve pipe reach samming after heating And it is in red heat state, then three layers of sleeve pipe after heating are sent into three-roller planetary rolling mill and carry out rolling deformation, in the operation of rolling Pipe surfaces externally and internally is carried out nitrogen protection, and is passed through cooling water and cools down due to the pipe of the violent temperature rise of deformation heat, , the three-layer metal composite pipe of uniform wall thickness smooth to inside and outside wall, the external diameter of three-layer metal composite pipe is Φ 60mm, three layers of gold The pipe thickness belonging to composite pipe is 15mm, and wherein straight carbon steel thickness is 10mm, and rustless steel outer lining thickness is 2mm, in rustless steel Lining thickness is 3mm, a length of 10900mm;
Step 4
The three-layer composite pipe material of rolling is carried out flaw detection, sawing, cleaning and heat treatment step, enters last as finished product Packaging link.
When using the highly-efficient processing that three-roll planetary rolling carries out three-layer composite pipe material and many metallic multilayers composite pipe, logical Cross and change plug and roll and directly metal composite pipe material to different size can carry out rolling and process, owing to pipe metal is three Occur Rotary shear flow to move under the effect of roller planetary rolling roll, can be formed the most steady under the local loading pressure of deformed area Solid metallurgical binding.
Above-described each embodiment is merely to illustrate technical scheme, is not intended to limit;Although with reference to front State embodiment the present invention has been described in detail, it will be understood by those within the art that: it still can be to front State the technical scheme described in embodiment to modify, or wherein part or all of technology is carried out equivalent;And these Amendment or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.

Claims (2)

1. the processing method of a metal composite pipe material, it is characterised in that step is as follows:
Step one
Get out the metal pipe billet that two or more length is identical, metal pipe billet big for size is sleeved on the metal tube that size is little On base, the condition that adjacent two metal pipe billets should meet is: the internal diameter of outer layer metal pipe is more than the external diameter of inner layer metal pipe 0.02-0.1mm;
Step 2
The both ends of the surface of the metal pipe billet installed by set weld together fixing, obtain composite bushing;
Step 3
Material characteristic according to metal pipe billet, as the recrystallization temperature of metal pipe billet is 350 DEG C-700 DEG C, by gained in step 2 To composite bushing be sent directly into three-roller planetary rolling mill and carry out rolling deformation, the operation of rolling carries out nitrogen to pipe surfaces externally and internally Protection, and be passed through cooling water cool down due to the pipe of the violent temperature rise of deformation heat, obtain inside and outside wall smooth, uniform wall thickness Rolled metal composite pipe;
If the recrystallization temperature of metal pipe billet is higher than 700 DEG C, by treating, composite bushing obtained in step 2 is sent into heating furnace Processing, heating-up temperature is 950-1150 DEG C, makes every layer of pipe reach samming and be in red heat state, then by composite bushing after heating Base is sent into three-roller planetary rolling mill and is carried out rolling deformation, pipe surfaces externally and internally carries out in the operation of rolling nitrogen protection, and is passed through cold But water cools down due to the pipe of the violent temperature rise of deformation heat, obtains inside and outside wall rolled metal smooth, uniform wall thickness and is combined Tubing;
Step 4
Rolled metal composite pipe is carried out flaw detection, sawing, cleaning and heat treatment step, enters last as finished product Packaging link.
2. according to the processing method of the metal composite pipe material described in claims 1, it is characterised in that described metal pipe billet is The pipe of the alloy materials such as the metal such as copper, aluminum or copper alloy, aluminium alloy, titanium alloy, straight carbon steel, rustless steel.
CN201610677768.1A 2016-08-17 2016-08-17 Manufacturing method of metal composite pipe Pending CN106311796A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107597875A (en) * 2017-10-23 2018-01-19 宝鸡市永盛泰钛业有限公司 A kind of production method of copper composite ti pipe
CN108188196A (en) * 2017-12-04 2018-06-22 中国科学院金属研究所 A kind of FeCrAl/Zr composite bimetal pipes and preparation method thereof
CN110394373A (en) * 2019-07-25 2019-11-01 宝鸡特钢钛业股份有限公司 A kind of flat bar material manufacturing method based on MULTILAYER COMPOSITE tubing
CN110997526A (en) * 2017-08-17 2020-04-10 英特罗尔控股有限公司 Mixing cap
CN111195658A (en) * 2020-01-08 2020-05-26 河北金奥管业有限公司 Special-shaped rocker shaft seamless steel tube and forming method thereof
CN111318708A (en) * 2018-12-17 2020-06-23 南京尚吉增材制造研究院有限公司 3D printing manufacturing double-layer composite pipe and microstructure regulating and controlling method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3862489A (en) * 1972-04-03 1975-01-28 Gen Dynamics Corp Method of manufacturing boron-aluminum composite tubes with integral end fittings
CN1618540A (en) * 2003-11-20 2005-05-25 吉欣(英德)热轧不锈复合钢有限公司 Method for making soldered hot-rolled composite metal tube
CN102284549A (en) * 2011-08-31 2011-12-21 江苏兴荣高新科技股份有限公司 Manufacturing method of aluminum-clad copper pipe having metallurgical bonding
CN202510850U (en) * 2012-02-29 2012-10-31 江苏银环精密钢管股份有限公司 Bimetallic clad pipe
CN103203391A (en) * 2013-01-06 2013-07-17 金龙精密铜管集团股份有限公司 Production method for copper-titanium composite tube

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3862489A (en) * 1972-04-03 1975-01-28 Gen Dynamics Corp Method of manufacturing boron-aluminum composite tubes with integral end fittings
CN1618540A (en) * 2003-11-20 2005-05-25 吉欣(英德)热轧不锈复合钢有限公司 Method for making soldered hot-rolled composite metal tube
CN102284549A (en) * 2011-08-31 2011-12-21 江苏兴荣高新科技股份有限公司 Manufacturing method of aluminum-clad copper pipe having metallurgical bonding
CN202510850U (en) * 2012-02-29 2012-10-31 江苏银环精密钢管股份有限公司 Bimetallic clad pipe
CN103203391A (en) * 2013-01-06 2013-07-17 金龙精密铜管集团股份有限公司 Production method for copper-titanium composite tube

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110997526A (en) * 2017-08-17 2020-04-10 英特罗尔控股有限公司 Mixing cap
CN107597875A (en) * 2017-10-23 2018-01-19 宝鸡市永盛泰钛业有限公司 A kind of production method of copper composite ti pipe
CN108188196A (en) * 2017-12-04 2018-06-22 中国科学院金属研究所 A kind of FeCrAl/Zr composite bimetal pipes and preparation method thereof
CN108188196B (en) * 2017-12-04 2019-10-11 中国科学院金属研究所 A kind of FeCrAl/Zr composite bimetal pipe and preparation method thereof
CN111318708A (en) * 2018-12-17 2020-06-23 南京尚吉增材制造研究院有限公司 3D printing manufacturing double-layer composite pipe and microstructure regulating and controlling method thereof
CN110394373A (en) * 2019-07-25 2019-11-01 宝鸡特钢钛业股份有限公司 A kind of flat bar material manufacturing method based on MULTILAYER COMPOSITE tubing
CN111195658A (en) * 2020-01-08 2020-05-26 河北金奥管业有限公司 Special-shaped rocker shaft seamless steel tube and forming method thereof

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Application publication date: 20170111