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CN106287091A - A kind of double-layer wear-resistant pipe and preparation method thereof - Google Patents

A kind of double-layer wear-resistant pipe and preparation method thereof Download PDF

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Publication number
CN106287091A
CN106287091A CN201610914981.XA CN201610914981A CN106287091A CN 106287091 A CN106287091 A CN 106287091A CN 201610914981 A CN201610914981 A CN 201610914981A CN 106287091 A CN106287091 A CN 106287091A
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CN
China
Prior art keywords
double
resistant pipe
outer tube
inner tube
tube
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Pending
Application number
CN201610914981.XA
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Chinese (zh)
Inventor
许学华
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Individual
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Individual
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Publication date
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Priority to CN201610914981.XA priority Critical patent/CN106287091A/en
Publication of CN106287091A publication Critical patent/CN106287091A/en
Pending legal-status Critical Current

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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
    • F16L43/00Bends; Siphons
    • F16L43/001Bends; Siphons made of metal
    • 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
    • B21C37/15Making tubes of special shape; Making tube fittings

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Abstract

The invention discloses a kind of double-layer wear-resistant pipe and preparation method thereof, including the outer tube for welding with for wear-resisting inner tube, the inwall gapless of the outer wall of said inner tube and outer tube is inlayed, described outer tube and inner tube are disposed as bending, its inside angle of bend is 6 90 °, and the two ends of described outer tube are welded with flange.The present invention makes gapless in the middle of inner and outer tubes inlay, and interlayer is without adding implant, and makes its manufacturing process simple.

Description

A kind of double-layer wear-resistant pipe and preparation method thereof
Technical field
The present invention relates to wear-resistant pipe application, particularly relate to a kind of double-layer wear-resistant pipe and preparation method thereof.
Background technology
At present, the double-layer wear-resistant pipe on market is by inner tube, outer tube and the composition of the implant in the middle of both, and this bilayer is resistance to It is more complicated, owing to there is implant centre that not only manufacturing process managed by mill so that the wearability of inner tube reduces, and uses for a long time, There will be multiple pothole on the inwall of inner tube, this pothole can extend to the inwall direction of outer tube again, also reduces the use of outer tube Life-span, thus cause being replaced whole double-layer wear-resistant pipe, it is unfavorable for the control of cost, is the most also unfavorable for its stable work Industry.
Summary of the invention
For overcoming disadvantages mentioned above, it is an object of the invention to provide a kind of double-layer wear-resistant pipe and preparation method thereof, reach Gapless in the middle of inner and outer tubes is made to inlay, it is not necessary to add implant, and make the simple purpose of its manufacturing process.
In order to solve above-mentioned technical problem, the present invention provides a kind of double-layer wear-resistant pipe, including the outer tube for welding and use In wear-resisting inner tube, the inwall gapless of the outer wall of said inner tube and outer tube is inlayed, and described outer tube and inner tube are disposed as bending Shape, its inside angle of bend is 6-90 °, and the two ends of described outer tube are welded with flange.Gapless without central filler thing is inlayed Embedding double-layer wear-resistant pipe is superposition thickness because of its inner and outer tubes, it is to avoid pothole occurs in inner tube wall, improves its wearability, makes It is more durable in use, extends its service life, reduces the frequency of replacing, is effectively controlled cost, and stabilizes operation.
Further, the gauge of described outer tube is 2-6mm, and it selects high-quality mild steel, and the gauge of inner tube is 6-12mm, it selects steel alloy or manganese steel.Improve welding stability and the wearability of inner tube of outer tube further.
Further, the interior diameter of said inner tube is set to 95-180mm.To adapt to more current conventional products.
Further, the inner wall thickness size of the outer radian of the bending section of described wear-resistant pipe is more than the inner wall thickness chi of interior radian Very little, its thickness difference is 1.5-3mm.Ensure that outer radian position is more wear-resisting.
A kind of double-layer wear-resistant pipe, including the outer tube for welding with for wear-resisting inner tube, the outer wall of said inner tube is with outer The inwall gapless of pipe is inlayed, and longitudinal interface of described outer tube and inner tube is disposed as isosceles trapezoid, outside described outer tube one end Wall diameter is set to 108-194mm, and the outer diameter of the other end is set to 100mm or 180mm, and the two ends of described outer tube are welded with Flange.It is strong that the double-layer wear-resistant pipe that the thin gapless in thick one end, one end is inlayed has wearability equally, and more durable in use, prolongation makes By features such as life-spans.
Further, the gauge of said inner tube is 6-12mm.
The manufacture method of a kind of double-layer wear-resistant pipe, it is characterised in that comprise the following steps:
A, first being preheated by induction heating equipment of medium frequency, 1 hour preheating time, temperature reaches 600-1000 DEG C;
B, outer tube is sheathed to carry out under loosening state with inner tube, form semi-finished product, semi-finished product are set in and intermediate frequency On the plug of the bending machine that firing equipment matches, the outer diameter dimension of plug one end is more than the outer diameter dimension of the other end, partly Finished product is sheathed by small size end;
C, thrust machine is utilized to be pushed away the most forward along plug by semi-finished product, until being pushed into the heating region of induction heating equipment of medium frequency;
Semi-finished product are heated by D, induction heating equipment of medium frequency, and meanwhile, thrust machine pushes away before continuing, and high-temperature heating coordinates plug Structure makes the quick gapless of inner and outer tubes inlay, and is fixed by flange welding by bonding machine after semi-finished product cool down,.
This manufacturing process is fairly simple, it is not necessary to technical professional can complete so that it is simplify operating procedure, saves system Make the time, time saving and energy saving.
Further, described induction heating equipment of medium frequency is heated by induction coil.It is more equal that induction coil makes it heat Even, quick, stable.
Further, described plug is set to bending or longitudinal interface is set to isosceles trapezoid.To adapt to difformity The making of wear-resistant pipe, plug can be configured according to the shape of the angle of bending or isosceles.
Further, described thrust machine being provided with push action cylinder, described thrust machine is by the way of two semiaxis screens Push away before carrying out.Also avoid wear-resistant pipe is damaged while ensureing thrust.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the present embodiment;
Fig. 2 is the structural representation of the present embodiment;
In figure: 1-outer tube;2-inner tube;3-flange.
Detailed description of the invention
Below in conjunction with the accompanying drawings presently preferred embodiments of the present invention is described in detail, so that advantages and features of the invention energy It is easier to be readily appreciated by one skilled in the art, thus protection scope of the present invention is made apparent clear and definite defining.
See shown in accompanying drawing 1, a kind of double-layer wear-resistant pipe, including the outer tube 1 for welding with for wear-resisting inner tube 2, interior The inwall gapless of the outer wall of pipe 2 and outer tube 1 is inlayed, and the gauge of outer tube 1 is 2-6mm, and it selects high-quality mild steel, inner tube The gauge of 2 is 6-12mm, and it selects steel alloy or manganese steel, and the interior diameter of inner tube 2 is set to 95-180mm, outer tube 1 and interior Pipe 2 is disposed as bending, and its inside angle of bend is 6-90 °, the inner wall thickness size of the outer radian of the bending section of wear-resistant pipe More than the inner wall thickness size of interior radian, its thickness difference is 1.5-3mm, and the two ends of outer tube 1 are welded with flange 3.
See shown in accompanying drawing 2, a kind of double-layer wear-resistant pipe, including the outer tube 1 for welding with for wear-resisting inner tube 2, interior The inwall gapless of the outer wall of pipe 2 and outer tube 1 is inlayed, and longitudinal interface of outer tube 1 and inner tube 2 is disposed as isosceles trapezoid, outer tube 1 The outer diameter of one end is set to 108-194mm, and the outer diameter of the other end is set to 100mm or 180mm mm, the length of outer tube 1 Spending a size of 125-180mm, the gauge of inner tube 2 is 6-12mm, and the two ends of outer tube 1 are welded with flange 3.
This wear-resistant pipe maintains the original process based prediction model of inner and outer tubes, adds again the intensity of entirety, its table Surface hardness is high and uniform, and thermal shock resistance properties is good.
The manufacture method of a kind of double-layer wear-resistant pipe, it is characterised in that comprise the following steps:
A, first being preheated by induction heating equipment of medium frequency, 1 hour preheating time, temperature reaches 600-1000 DEG C, heating in medium frequency Equipment is heated by induction coil;
B, outer tube is sheathed to carry out under loosening state with inner tube, form semi-finished product, semi-finished product are set in and intermediate frequency On the plug of the bending machine that firing equipment matches, the outer diameter dimension of plug one end is more than the outer diameter dimension of the other end, partly Finished product is sheathed by small size end, and plug can require to be set to bending according to difference or longitudinal interface is set to isosceles trapezoid;
C, thrust machine is utilized to be pushed away the most forward along plug by semi-finished product, until being pushed into the heating region of induction heating equipment of medium frequency, Being provided with push action cylinder on thrust machine, thrust machine pushes away before carrying out by the way of two semiaxis screens;
Semi-finished product are heated by D, induction heating equipment of medium frequency, and meanwhile, thrust machine pushes away before continuing, and high-temperature heating coordinates plug Structure makes the quick gapless of inner and outer tubes inlay, and is fixed by flange welding by bonding machine after semi-finished product cool down,.
Embodiment of above only for technology design and the feature of the present invention are described, its object is to allow and is familiar with technique People understands present disclosure and is carried out, and can not limit the scope of the invention with this, all according to present invention spirit The equivalence that essence is done changes or modifies, and all should contain within the scope of the present invention.

Claims (10)

1. a double-layer wear-resistant pipe, it is characterised in that: include for the outer tube of welding with for wear-resisting inner tube, said inner tube The inwall gapless of outer wall and outer tube is inlayed, and described outer tube and inner tube are disposed as bending, and its inside angle of bend is 6- 90 °, the two ends of described outer tube are welded with flange.
A kind of double-layer wear-resistant pipe the most according to claim 1, its characteristic is, the gauge of described outer tube is 2-6mm, It selects mild steel, and the gauge of inner tube is 6-12mm, and it selects steel alloy or manganese steel.
A kind of double-layer wear-resistant pipe the most according to claim 1, its characteristic is, the interior diameter of said inner tube is set to 95- 180mm。
A kind of double-layer wear-resistant pipe the most according to claim 1, its characteristic is, the outer radian of the bending section of described wear-resistant pipe Inner wall thickness size is more than the inner wall thickness size of interior radian, and its thickness difference is 1.5-3mm.
5. a double-layer wear-resistant pipe, it is characterised in that: include for the outer tube of welding with for wear-resisting inner tube, said inner tube The inwall gapless of outer wall and outer tube is inlayed, and longitudinal interface of described outer tube and inner tube is disposed as isosceles trapezoid, described outer tube The outer diameter of one end is set to 108-194mm, and the outer diameter of the other end is set to 100mm or 180mm, the two of described outer tube End is welded with flange.
A kind of double-layer wear-resistant pipe the most according to claim 5, its characteristic is, the gauge of said inner tube is 6- 12mm。
7. the manufacture method of a double-layer wear-resistant pipe, it is characterised in that comprise the following steps:
A, first being preheated by induction heating equipment of medium frequency, 1 hour preheating time, temperature reaches 600-1000 DEG C;
B, outer tube is sheathed to carry out under loosening state with inner tube, form semi-finished product, semi-finished product are set in and heating in medium frequency On the plug of the bending machine that equipment matches, the outer diameter dimension of plug one end is more than the outer diameter dimension of the other end;
C, thrust machine is utilized to be pushed away the most forward along plug by semi-finished product, until being pushed into the heating region of induction heating equipment of medium frequency;
Semi-finished product are heated by D, induction heating equipment of medium frequency, and meanwhile, thrust machine pushes away before continuing, and high-temperature heating coordinates the structure of plug Make the quick gapless of inner and outer tubes inlay, by bonding machine, flange welding fixed after semi-finished product cool down,.
The manufacture method of a kind of double-layer wear-resistant pipe the most according to claim 7, its characteristic is, described induction heating equipment of medium frequency Heated by induction coil.
The manufacture method of a kind of double-layer wear-resistant pipe the most according to claim 7, its characteristic is, described plug is set to curved Curved or longitudinal interface is set to isosceles trapezoid.
The manufacture method of a kind of double-layer wear-resistant pipe the most according to claim 7, its characteristic is, described thrust machine sets Being equipped with push action cylinder, described thrust machine pushes away before carrying out by the way of two semiaxis screens.
CN201610914981.XA 2016-10-20 2016-10-20 A kind of double-layer wear-resistant pipe and preparation method thereof Pending CN106287091A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610914981.XA CN106287091A (en) 2016-10-20 2016-10-20 A kind of double-layer wear-resistant pipe and preparation method thereof

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Application Number Priority Date Filing Date Title
CN201610914981.XA CN106287091A (en) 2016-10-20 2016-10-20 A kind of double-layer wear-resistant pipe and preparation method thereof

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Publication Number Publication Date
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5275440A (en) * 1990-04-02 1994-01-04 Esser-Brieden Gmbh & Co. Kg Double-layer pipe bend with intermediate support layer
CN201973368U (en) * 2010-12-31 2011-09-14 三一重工股份有限公司 Composite taper pipe for concrete pumping equipment
CN102744284A (en) * 2012-06-05 2012-10-24 燕山大学 High-pressure elbow pipe billet heat-pushing temperature pressure shaping method
CN102794601A (en) * 2011-05-23 2012-11-28 周照耀 Method for manufacturing wear-resistant, corrosion-resistant and impact-resistant double-metal composite bend pipe
CN103042071A (en) * 2013-01-07 2013-04-17 北京东鑫顺通耐磨技术有限公司 Bimetallic compound elbow and production method thereof
CN203868577U (en) * 2013-04-28 2014-10-08 尹邦进 Wear-resistant elbow for conveying concrete
CN207213451U (en) * 2016-10-20 2018-04-10 许学华 A kind of double-layer wear-resistant pipe

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5275440A (en) * 1990-04-02 1994-01-04 Esser-Brieden Gmbh & Co. Kg Double-layer pipe bend with intermediate support layer
CN201973368U (en) * 2010-12-31 2011-09-14 三一重工股份有限公司 Composite taper pipe for concrete pumping equipment
CN102794601A (en) * 2011-05-23 2012-11-28 周照耀 Method for manufacturing wear-resistant, corrosion-resistant and impact-resistant double-metal composite bend pipe
CN102744284A (en) * 2012-06-05 2012-10-24 燕山大学 High-pressure elbow pipe billet heat-pushing temperature pressure shaping method
CN103042071A (en) * 2013-01-07 2013-04-17 北京东鑫顺通耐磨技术有限公司 Bimetallic compound elbow and production method thereof
CN203868577U (en) * 2013-04-28 2014-10-08 尹邦进 Wear-resistant elbow for conveying concrete
CN207213451U (en) * 2016-10-20 2018-04-10 许学华 A kind of double-layer wear-resistant pipe

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