CN105135071A - Method for manufacturing double-metal composite pipe - Google Patents

Method for manufacturing double-metal composite pipe Download PDF

Info

Publication number
CN105135071A
CN105135071A CN201510523437.8A CN201510523437A CN105135071A CN 105135071 A CN105135071 A CN 105135071A CN 201510523437 A CN201510523437 A CN 201510523437A CN 105135071 A CN105135071 A CN 105135071A
Authority
CN
China
Prior art keywords
pipe
tube
composite
double
bimetal
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
CN201510523437.8A
Other languages
Chinese (zh)
Inventor
孟宪虎
丁毅
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.)
JIANGSU ZHONGXIN GREEN PIPE INDUSTRY Co Ltd
Original Assignee
JIANGSU ZHONGXIN GREEN PIPE INDUSTRY 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 JIANGSU ZHONGXIN GREEN PIPE INDUSTRY Co Ltd filed Critical JIANGSU ZHONGXIN GREEN PIPE INDUSTRY Co Ltd
Priority to CN201510523437.8A priority Critical patent/CN105135071A/en
Publication of CN105135071A publication Critical patent/CN105135071A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00Rigid pipes
    • F16L9/02Rigid pipes of metal

Abstract

The invention discloses a method for manufacturing a double-metal composite pipe. The method includes the steps that 1, surface treatment is carried out on the outer surface of an inner pipe body and the inner surface of an outer pipe body; 2, the inner surface of the outer pipe body or the outer surface of the inner pipe body is coated with a metal layer and dried; 3, the inner pipe body penetrates into the outer pipe body; 4, the inner pipe body is combined with the outer pipe body through a mechanical pipe compositing process; 5, heat treatment fusion is carried out; 6, air cooling or furnace cooling is carried out on the double-metal composite pipe obtained after heat treatment fusion; 7, end openings of the double-metal composite pipe are finished, and decontamination treatment is conducted on the outer surface; and 8, checking and warehousing are carried out. According to the method for manufacturing the double-metal composite pipe, the manner that mechanical composting is in cooperation with metallurgy composting is adopted, and the defects that the work efficiency of a metallurgy composite pipe is low, and the thickness of an outer pipe body and an inner pipe body is uneven are overcome; the feature that the metallurgy composite pipe is high in bonding strength is achieved; the method is suitable for mass production, and metallurgical bonding exists between the outer pipe body and the inner pipe body; the manufactured double-metal composite pipe is high in bonding strength, free of falling and long in service life; and the production process is environment-friendly and free of pollution, and the manufactured double-metal composite pipe has good application prospects compared with similar metallurgy composite pipe products.

Description

A kind of manufacture method of composite bimetal pipe
Technical field
The present invention relates to metal composite pipe technical field, is specifically related to a kind of manufacture method of composite bimetal pipe.
Background technique
Composite bimetal pipe, is mainly used in the occasion such as the conveying containing Korrosionsmedium, heat exchanger heat-shift.Usually, outer tube is used for pressure-bearing, interiorly effectively resists aggressive medium.At present, composite bimetal pipe on the market mainly can be divided into mechanical composite tube and metallurgical composite pipe two class, and the manufacturing process of two class composite bimetal pipes, all exists defect in various degree, specific as follows,
(1) mechanical composite tube lining pipe is penetrated basic unit's pipe, two pipe Coaxial Superimposeds, then by certain technique as hydraulic pressure, spinning, the method internal lining pipe generation plastic deformation such as to fire, basic unit's pipe does not occur or slight plastic deformation, thus both are closely linked, junction plane belongs to machine joint, but, when high temperature and Long-Time Service, the defects such as easy generation layering, cause bimetal tube to lose efficacy, advantage is that production prices are cheap, is convenient to batch production;
(2) metallurgical composite pipe forms metallurgical composite bed by certain technique between lining pipe and basic unit's pipe, junction plane belongs to metallurgical bonds, and adhesive strength is high, and usability is good, the making price of metallurgical composite bed is partially expensive, cost is high, is unfavorable for batch production, metallurgical composite pipe, at present, there are three kinds of making methods, specific as follows
1) outer tube material and inner tube material are combined by the technique such as hot rolling, explosion welding and make Clad Steel Plate, then welding fabrication is rolled by composite sheet system, this technique easily cause outer tube and inner tube material in uneven thickness, and heat treatment repeatedly in course of working, effect and cost higher;
2) inner tube material built-up welding flies internal surface in outer tube material, and form metallurgical composite pipe, this technique easily causes welding heat affected zone excessive, and cost is very high, and work efficiency is low, cannot complete the composite pipe that the long bore of length is little;
3) make inner tube material be molten state, be coated in the internal surface of outer tube by the method for centrifugal casting, the facile interior pipe consistency of this technique is low, and metallurgical composite bed exists friable tissues, manufactures cost high, is unfavorable for batch production.
Summary of the invention
Technical problem solved by the invention overcomes the deficiency that existing mechanical composite tube and metallurgical composite pipe exist in making method.The manufacture method of composite bimetal pipe of the present invention, mechanical compound is adopted to coordinate metallurgical complex method, have the advantages that mechanical composite tube technique is simple, cost is low, there is again the feature that the adhesive strength of metallurgical composite pipe is high, product performance are more excellent, energy consumption significantly reduces, and easily realizes, and has a good application prospect.
In order to achieve the above object, the technical solution adopted in the present invention is:
A manufacture method for composite bimetal pipe, is characterized in that: comprise the following steps,
Step (1), carries out surface treatment to inner tube outer surface and outer pipe internal surface, and surface treatment comprises polishing and oil removing operation;
Step (2), by the outer surface layer of metal layer of the internal surface of outer tube or interior pipe, dry;
Step (3), penetrates outer tube by interior pipe;
Step (4), adopts mechanical composite tube process combining by inner and outer pipe, form composite bimetal pipe;
Step (5), heat treatment fuses, and be 300 ~ 1400 DEG C by the heat treatment temperature of the composite bimetal pipe of compound, holding time is 2 minutes ~ 4 hours;
Step (6), by heat treatment fuse after composite bimetal pipe, carry out air cooling or stove cold;
Step (7), repair the port of composite bimetal pipe, outer surface carries out abatement processes
Step (8), inspection warehouse-in.
Aforesaid bimetal tube manufacture method, is characterized in that: in step (2), metal layer is metal alloy layer.
Aforesaid bimetal tube manufacture method, is characterized in that: the thickness of described metal alloy layer is 5 ~ 1000 μm.
Aforesaid bimetal tube manufacture method, is characterized in that: in step (5), heat treatment temperature is 500 ~ 1200 DEG C.
Aforesaid bimetal tube manufacture method, is characterized in that: in step (5), holding time is 2 hours.
The invention has the beneficial effects as follows: the manufacture method of composite bimetal pipe of the present invention, mechanical compound is adopted to coordinate metallurgical complex method, the work efficiency overcoming metallurgical composite pipe is low, the shortcomings such as inner and outer pipes uneven thickness, and the feature that the adhesive strength with metallurgical composite pipe is high, compare similar metallurgical composite pipe product, technique side is simple, product performance are more excellent, energy consumption significantly reduces, easy realization, adhesive strength reaches metallurgy combination, effectively can reduce the cost of production of metallurgical composite pipe, the operation of increase is few compared with existing mechanical composite tube production technology, be applicable to producing in enormous quantities, metallurgy combination is there is between outer tube and interior pipe, adhesive strength is high, do not come off, life-span is long, and production process environmental protection, pollution-free, compare similar metallurgical composite pipe product, have a good application prospect.
Accompanying drawing explanation
Fig. 1 is the flow chart of the manufacture method of composite bimetal pipe of the present invention.
Fig. 2 is the cross section structure schematic diagram of the composite bimetal pipe of the manufacture method adopting composite bimetal pipe of the present invention.
Embodiment
Below in conjunction with Figure of description, the present invention is further illustrated.
As shown in Figure 1, the manufacture method of composite bimetal pipe of the present invention, comprises the following steps,
Step (1), carries out surface treatment to inner tube outer surface and outer pipe internal surface, and surface treatment comprises polishing and oil removing operation;
Step (2), by the outer surface layer of metal layer of the internal surface of outer tube or interior pipe, dry, metal layer is metal alloy layer, and be preferably copper-zinc alloy layer, adhesive strength is high, and the thickness of metal alloy layer is 5 ~ 1000 μm;
Step (3), penetrates outer tube by interior pipe;
Step (4), adopts mechanical composite tube process combining by inner and outer pipe, form composite bimetal pipe;
Step (5), heat treatment fuses, and be 300 ~ 1400 DEG C by the heat treatment temperature of the composite bimetal pipe of compound, holding time is 2 minutes ~ 4 hours, and heat treatment temperature is preferably 500 ~ 1200 DEG C, and holding time is preferably 2 hours;
Step (6), by heat treatment fuse after composite bimetal pipe, carry out air cooling or stove cold;
Step (7), repair the port of composite bimetal pipe, outer surface carries out abatement processes;
Step (8), inspection warehouse-in.
As shown in Figure 2, adopt the composite bimetal pipe that the manufacture method of composite bimetal pipe of the present invention makes, 1 is interior pipe, 2 is metal layer, 3 is outer tube, mechanical compound is adopted to coordinate metallurgical complex method, the work efficiency overcoming metallurgical composite pipe is low, the shortcomings such as inner and outer pipes uneven thickness, and the feature that the adhesive strength with metallurgical composite pipe is high, compare similar metallurgical composite pipe product, technique side is simple, product performance are more excellent, energy consumption significantly reduces, easy realization, adhesive strength reaches metallurgy combination, effectively can reduce the cost of production of metallurgical composite pipe, the operation of increase is few compared with existing mechanical composite tube production technology, be applicable to producing in enormous quantities, metallurgy combination is there is between outer tube and interior pipe, adhesive strength is high, do not come off, life-span is long, and production process environmental protection, pollution-free, compare similar metallurgical composite pipe product, have a good application prospect.
More than show and describe basic principle of the present invention and major character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.

Claims (5)

1. a manufacture method for composite bimetal pipe, is characterized in that: comprise the following steps,
Step (1), carries out surface treatment to inner tube outer surface and outer pipe internal surface, and surface treatment comprises polishing and oil removing operation;
Step (2), by the outer surface layer of metal layer of the internal surface of outer tube or interior pipe, dry;
Step (3), penetrates outer tube by interior pipe;
Step (4), adopts mechanical composite tube process combining by inner and outer pipe, form composite bimetal pipe;
Step (5), heat treatment fuses, and be 300 ~ 1400 DEG C by the heat treatment temperature of the composite bimetal pipe of compound, holding time is 2 minutes ~ 4 hours;
Step (6), by heat treatment fuse after composite bimetal pipe, carry out air cooling or stove cold;
Step (7), repair the port of composite bimetal pipe, outer surface carries out abatement processes
Step (8), inspection warehouse-in.
2. bimetal tube manufacture method according to claim 1, is characterized in that: in step (2), metal layer is metal alloy layer.
3. bimetal tube manufacture method according to claim 1 and 2, is characterized in that: the thickness of described metal alloy layer is 5 ~ 1000 μm.
4. bimetal tube manufacture method according to claim 1, is characterized in that: in step (5), heat treatment temperature is 500 ~ 1200 DEG C.
5. bimetal tube manufacture method according to claim 1, is characterized in that: in step (5), holding time is 2 hours.
CN201510523437.8A 2015-08-25 2015-08-25 Method for manufacturing double-metal composite pipe Pending CN105135071A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510523437.8A CN105135071A (en) 2015-08-25 2015-08-25 Method for manufacturing double-metal composite pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510523437.8A CN105135071A (en) 2015-08-25 2015-08-25 Method for manufacturing double-metal composite pipe

Publications (1)

Publication Number Publication Date
CN105135071A true CN105135071A (en) 2015-12-09

Family

ID=54720539

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510523437.8A Pending CN105135071A (en) 2015-08-25 2015-08-25 Method for manufacturing double-metal composite pipe

Country Status (1)

Country Link
CN (1) CN105135071A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107774737A (en) * 2016-08-31 2018-03-09 扬州市管件厂有限公司 Ni-based composite bimetal pipe part moulding process
CN108044230A (en) * 2017-12-12 2018-05-18 太原科技大学 A kind of method of stainless steel tube and the metallurgical compound base of carbon steel pipe
CN108714768A (en) * 2018-05-18 2018-10-30 沧州隆泰迪管道科技有限公司 A kind of diameter reduced mechanical composite tube processing method
CN109518178A (en) * 2018-11-08 2019-03-26 南京工业大学 A kind of preparation method of the compound round steel of bimetallic
CN109570257A (en) * 2018-11-08 2019-04-05 南京工业大学 A kind of compound band steel of bimetallic, strip and preparation method thereof
CN110538866A (en) * 2019-09-09 2019-12-06 南工大溧阳新材料研发中心有限公司 Bimetal composite material production equipment

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993020382A1 (en) * 1992-03-31 1993-10-14 Heinrich Hampel Metal pipe and process for producing the same
CN201407423Y (en) * 2009-05-22 2010-02-17 西安向阳航天材料股份有限公司 Double-metal composite bend pipe with both metallurgical bonding ends and mechanical bonding middle part
CN102672438A (en) * 2012-06-04 2012-09-19 新兴铸管股份有限公司 Process for producing metallurgical composite double metal seamless steel pipe
CN103978292A (en) * 2014-05-26 2014-08-13 北京隆盛泰科石油管科技有限公司 Duplex-metal metallurgical composite pipe finished through quadruple welding and process method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993020382A1 (en) * 1992-03-31 1993-10-14 Heinrich Hampel Metal pipe and process for producing the same
CN201407423Y (en) * 2009-05-22 2010-02-17 西安向阳航天材料股份有限公司 Double-metal composite bend pipe with both metallurgical bonding ends and mechanical bonding middle part
CN102672438A (en) * 2012-06-04 2012-09-19 新兴铸管股份有限公司 Process for producing metallurgical composite double metal seamless steel pipe
CN103978292A (en) * 2014-05-26 2014-08-13 北京隆盛泰科石油管科技有限公司 Duplex-metal metallurgical composite pipe finished through quadruple welding and process method thereof

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107774737A (en) * 2016-08-31 2018-03-09 扬州市管件厂有限公司 Ni-based composite bimetal pipe part moulding process
CN108044230A (en) * 2017-12-12 2018-05-18 太原科技大学 A kind of method of stainless steel tube and the metallurgical compound base of carbon steel pipe
CN108714768A (en) * 2018-05-18 2018-10-30 沧州隆泰迪管道科技有限公司 A kind of diameter reduced mechanical composite tube processing method
CN109518178A (en) * 2018-11-08 2019-03-26 南京工业大学 A kind of preparation method of the compound round steel of bimetallic
CN109570257A (en) * 2018-11-08 2019-04-05 南京工业大学 A kind of compound band steel of bimetallic, strip and preparation method thereof
CN110538866A (en) * 2019-09-09 2019-12-06 南工大溧阳新材料研发中心有限公司 Bimetal composite material production equipment
CN110538866B (en) * 2019-09-09 2020-08-28 南工大溧阳新材料研发中心有限公司 Bimetal composite material production equipment

Similar Documents

Publication Publication Date Title
CN105135071A (en) Method for manufacturing double-metal composite pipe
CN103934303B (en) A kind of preparation method of high-performance copper/aluminium composite pipe
CN106378456B (en) A kind of method for rapidly densifying for powder metallurgy superalloy component
Jin et al. Experimental research on applying the copper-clad aluminum tube as connecting tubes of air conditioners
CN206343842U (en) A kind of soldering steel pistons
CN102814442A (en) Manufacture method of piston barrel blank of high-silicon aluminum alloy hollow piston
CN204901092U (en) Bimetallic multiple -unit tube
CN203711811U (en) Cooling device for fired mold precision casting medium casting
CN106825517B (en) A kind of electrode cap high-temperature mold and method
CN203956046U (en) A kind of bimetallic plain thrust bearing blank die for preparation tool
CN203578727U (en) Portable aluminum wheel hub die heating tool
CN103736972B (en) Portable type aluminium wheels mold heated instrument
CN103551546A (en) Low-pressure casting mold capable of cooling hot node quickly
CN201720248U (en) Ceramic roller mould
CN202411355U (en) Aluminium alloy composite round ingot
CN1015694B (en) Universal valve, tube-fitting expansion pressure forming process
CN201836546U (en) Pipeline connecting assembly of air conditioner
CN205373496U (en) Flat pipe adds not flaring of convex closure stove and welds formula water tank
CN205147130U (en) Heating and water pressure coupling's bimetal composite tube forming system
CN201497403U (en) Leakage-proof heat exchanger
CN203526520U (en) Low-pressure casting die for rapidly cooling hot node
CN208831953U (en) A kind of high performance corrosion-proof elbow
CN201876159U (en) Heat exchanger for gas water heater
CN203432160U (en) Input/output tube set for air conditioner condenser
CN203130675U (en) Hydraulic covering machine oil tank cooling device

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20151209