CN103736762A - Internal extrusion special die for producing composite copper pipe - Google Patents
Internal extrusion special die for producing composite copper pipe Download PDFInfo
- Publication number
- CN103736762A CN103736762A CN201410051381.6A CN201410051381A CN103736762A CN 103736762 A CN103736762 A CN 103736762A CN 201410051381 A CN201410051381 A CN 201410051381A CN 103736762 A CN103736762 A CN 103736762A
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- China
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- copper pipe
- special die
- rises
- round bar
- composite copper
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Abstract
The invention discloses an internal extrusion special die for producing a composite copper pipe. The internal extrusion special die is characterized in that an round bar of which one end is a 450-degrees angle is made from an industrial nylon 1010 material, the length L of the round bar is designed in a range between 60mm and 150mm according to the specification of the composite copper water pipe, the diameter phi1 of the round bar is 4-6mm smaller than the inner diameter of a lining thin-wall copper pipe, a through hole is formed and processed in the axial center of the round bar for the connection convenience of a core rod of a cold-drawing machine, and the diameter of the through hole is designed in a range between 8mm and 30mm according to the specification of the composite copper pipe. The internal extrusion special die has a series of outstanding advantages that wear and corrosion are resistant, the price is low, processing can be easily carried out at any time and at any place, a certain elastic modulus is available in the cold extrusion deformation process, and the internal extrusion special die is particularly suitable for the actual current situations in China that the inner walls of zinc-plated steel pipes are rough, the welding line protrudes and the ellipticity is larger.
Description
Technical field
The present invention relates to compound copper pipe production technology and technique, be specifically related to a kind of interior particular manufacturing craft that rises that squeezes of producing for compound copper pipe.
Background technology
Copper pipe, with excellent performance such as indispensable trace elements in good corrosion-resistant, high temperature resistant, anti-aging, impermeable, sterilization and supplementary human body, makes it in water supply line is selected, have unrivaled unique advantage.
Copper pipe is used as water supply line, and in the world, many developed countries and area are become basically universal.China mainland area is universal is less than 1%.This is because China is vast in territory, populous, and economic development is extremely uneven, and copper resource is seriously deficient in addition, and copper valency is high, and copper pipe is unable to reach as high-grade luxury goods always.
Based on reducing costs, ensure the composite factors such as health and reserved resource, countries in the world are all striving to find copper pipe substitute.
The domestic compound copper pipe of having developed at present, outer tube is Q235 coating steel pipe, inner tube is pure copper tube, has both played the object of copper pipe conveying water quality, can significantly reduce costs again.But due to coating steel pipe inwall welding bead is outstanding and galvanizing after the shortcomings such as cadmia is coarse, the thin-wall copper pipe of liner is easily scratched and even racks by brute force extruding.Because coating steel pipe ovality is larger, thin-wall copper pipe is difficult to be compounded in very in consistent manner coating steel pipe inwall simultaneously, and gap is left in the place that wherein ovality is larger, buries fatal hidden danger to water delivery pressure-bearing and galvanized pipe inner wall corrosion.
At present, domestic production manufacturer production load copper plumbing, extrusion expansion method in mostly adopting, spherical as the interior mould that rises that squeezes through being processed into using wolfram steel (3CrW8V), utilize drawbench to carry out interior extrusion expansion composite molding.
, there are following three large defects in this spherical interior mould that rises that squeezes:
1, the spherical interior mould that rises that squeezes, when thin-wall copper pipe inwall is made axial tension, is that hoop dotted line contacts with thin-wall copper pipe, contact area is little, although have laborsaving effect, composite effect is undesirable, its reason is that force of rolling friction is little, stainless steel received heat low and very soon heat radiation, cause the little and easily bounce-back of stainless steel amount of plastic deformation under low-temperature condition, the Double-metal pipe after compound is compound not tight, the easy layering of port during sawing, installs and brings very burden to pipeline;
2, the spherical interior mould that rises that squeezes, owing to adopting wolfram steel (3CrW8V), this texture material is hard, not yielding, long service life.But because Q235 coating steel pipe inner wall coarse, ovality are poor and inside weld projection, adopt the spherical mold of this intimate rigidity, almost cannot make inner tube thin-wall copper pipe fit tightly along the interference of outer tube wall every bit, the projection of inside weld, more make axial tensile force continue to increase, not only increase power load, the major accident such as also easily cause that core bar is broken;
3, the spherical interior mould that rises that squeezes of wolfram steel (3CrW8V), expensive, and difficulty of processing is large, is more not suitable for repairing a die temporarily.
All these, become the important bottleneck that restriction China compound copper pipe develops in a healthy way
Summary of the invention
In order to overcome above many defects, the technical solution adopted in the present invention is:
1, through internally squeezing the mold materials that rises, repeatedly study and test, according to China's coating steel pipe Quality situation, design adopts industrial nylon 1010 to do mold materials;
2, the former spherical interior crowded mould that rises is revised and is designed to front end band 45
0excessively section, there is certain length and the heavy wall tubular structure with central through hole.
Accompanying drawing explanation
Below the mark in this Figure of description 1 expressed content and figure is briefly described:
The interior Special mould structure schematic diagram that rises that squeezes that accompanying drawing 1 is produced for compound copper pipe for the present invention.
In accompanying drawing 1: 1, the interior mould outer tube body that rises that squeezes; 2, Nei Jizhang mold center through hole; L is the interior die length that rises that squeezes; ￠ 1 is the interior mould external diameter that rises that squeezes; ￠ 2 is Nei Jizhang mold center through-hole diameter;
The specific embodiment
Contrast accompanying drawing 1 below, by the description to optimum embodiment, the specific embodiment of the present invention is described in further detail.
As shown in Figure 1, the described interior particular manufacturing craft that rises that squeezes of producing for compound copper pipe, is made by industrial Nylon-1010;
Profile is one end band 45
0the pole at angle, pole length L according to compound copper pipe specifications design scope between 60mm～150mm, diameter of the rod ￠ 1 is than the little 4mm～6mm of liner thin-wall copper pipe internal diameter, along pole axial centre design processing through hole, be convenient to be connected with drawbench core bar, through-hole diameter according to compound copper pipe specifications design scope between 8mm～30mm.
In squeeze the particular manufacturing craft that rises and be connected with drawbench core bar, startup mold lubrication device, remains lubrication and cooling during mold work.To be with 45
0the one end at angle is as the front end of import, so that the coating steel pipe that entering has smoothly worn long is combined and liner thin-wall copper pipe complex, start drawbench, cold-drawing trolley is clamped core bar straight line uniform motion, driving the interior crowded particular manufacturing craft that rises in coating steel pipe and liner thin-wall copper pipe complex, to make axially at the uniform velocity cold-extruded rises, thereby the interference of rising of the thin-wall copper pipe cold-extruded of liner is compound to coating steel pipe inwall, forms structure-integrated compound copper pipe.
In the spherical wolfram steel (3CrW8V) that the present invention generally uses at present, squeeze the mould that rises, there is following outstanding advantages:
1, industrial nylon 1010, wear resistant corrosion resistant, low price, easily processing whenever and wherever possible;
2, industrial nylon 1010 has certain elasticity, at cold-extruded, rise in deformation process, liner thin-wall copper pipe can be compound in every bit according to outer base tube coating steel pipe inwall exhaustive ground interference, compound tight, natural one, adapts to China's coating steel pipe inner wall coarse, weld flush and larger ovality real current situation especially;
3, whole die shape design is processed into 45
0the excessively pole structure at angle, make the interior mould that rises that squeezes become the increase of hundreds of times with liner thin-wall copper pipe contact-making surface, and because force of sliding friction is large, cause liner thin-wall copper pipe heating temperature significantly to rise, after being conducive to metal plastic deformation increase and unloading power, do not rebound, after bimetallic is compound, natural tight one, during sawing, port is not stratified, is convenient to pipeline and installs and fluid delivery safety;
By reference to the accompanying drawings the present invention is exemplarily described above; obviously specific implementation of the present invention is not subject to the restrictions described above; as long as adopted the improvement of the various unsubstantialities that design of the present invention and technical scheme carry out; or without improving, design of the present invention and technical scheme are directly applied to other occasion, all within protection scope of the present invention.
Claims (3)
1. the interior particular manufacturing craft that rises that squeezes of producing for compound copper pipe, is characterized in that being made by industrial Nylon-1010, and profile is one end band 45
0the pole at angle, along the heavy wall tubular body structure of pole axial centre design processing through hole.
2. according to claim 1, described a kind of interior particular manufacturing craft that rises that squeezes of producing for compound copper pipe, it is characterized in that die length L according to composite copper water pipe specifications design scope between 60mm～150mm, mould diameter ￠ 1 is than the little 4mm～6mm of liner thin-wall copper pipe internal diameter.
3. according to claim 1, described a kind of interior particular manufacturing craft that rises that squeezes of producing for compound copper pipe, it is characterized in that to Center, processing through hole along mould shaft, be convenient to be connected with drawbench core bar, through-hole diameter according to compound copper pipe specifications design scope between 8mm～30mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410051381.6A CN103736762A (en) | 2014-02-16 | 2014-02-16 | Internal extrusion special die for producing composite copper pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410051381.6A CN103736762A (en) | 2014-02-16 | 2014-02-16 | Internal extrusion special die for producing composite copper pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103736762A true CN103736762A (en) | 2014-04-23 |
Family
ID=50493870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410051381.6A Pending CN103736762A (en) | 2014-02-16 | 2014-02-16 | Internal extrusion special die for producing composite copper pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103736762A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113043519A (en) * | 2019-12-27 | 2021-06-29 | 天津中利特自动化设备科技有限公司 | High-stability bag extruding and expanding equipment |
| CN114226478A (en) * | 2021-11-30 | 2022-03-25 | 四川航天川南火工技术有限公司 | Automatic stretching device of energetic powder material copper pipe for aerospace initiating explosive device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000140932A (en) * | 1998-11-05 | 2000-05-23 | Japan Nuclear Cycle Development Inst States Of Projects | Manufacture of steel tube |
| CN1374158A (en) * | 2002-04-20 | 2002-10-16 | 关士杰 | Production process of composite pipe with stainless steel lining |
| CN1457970A (en) * | 2003-06-10 | 2003-11-26 | 陈金明 | Multipurpose plastic co-extrusion composite pipe mould |
| WO2009054385A1 (en) * | 2007-10-22 | 2009-04-30 | Sumitomo Metal Industries, Ltd. | Method of manufacturing metal tube |
| CN201249210Y (en) * | 2008-08-21 | 2009-06-03 | 汪正友 | Inner compound die for carbon steel-based stainless steel inner compound pipe |
| CN102284546A (en) * | 2011-06-22 | 2011-12-21 | 汪正友 | Method and special die for manufacturing composite pipeline |
-
2014
- 2014-02-16 CN CN201410051381.6A patent/CN103736762A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000140932A (en) * | 1998-11-05 | 2000-05-23 | Japan Nuclear Cycle Development Inst States Of Projects | Manufacture of steel tube |
| CN1374158A (en) * | 2002-04-20 | 2002-10-16 | 关士杰 | Production process of composite pipe with stainless steel lining |
| CN1457970A (en) * | 2003-06-10 | 2003-11-26 | 陈金明 | Multipurpose plastic co-extrusion composite pipe mould |
| WO2009054385A1 (en) * | 2007-10-22 | 2009-04-30 | Sumitomo Metal Industries, Ltd. | Method of manufacturing metal tube |
| CN201249210Y (en) * | 2008-08-21 | 2009-06-03 | 汪正友 | Inner compound die for carbon steel-based stainless steel inner compound pipe |
| CN102284546A (en) * | 2011-06-22 | 2011-12-21 | 汪正友 | Method and special die for manufacturing composite pipeline |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113043519A (en) * | 2019-12-27 | 2021-06-29 | 天津中利特自动化设备科技有限公司 | High-stability bag extruding and expanding equipment |
| CN114226478A (en) * | 2021-11-30 | 2022-03-25 | 四川航天川南火工技术有限公司 | Automatic stretching device of energetic powder material copper pipe for aerospace initiating explosive device |
| CN114226478B (en) * | 2021-11-30 | 2024-05-03 | 四川航天川南火工技术有限公司 | Automatic stretching device for copper pipe made of energetic powder material for aerospace initiating explosive device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140423 |