CN1119543C - Combined marmem pipe and its manufacture technology - Google Patents
Combined marmem pipe and its manufacture technology Download PDFInfo
- Publication number
- CN1119543C CN1119543C CN 00135193 CN00135193A CN1119543C CN 1119543 C CN1119543 C CN 1119543C CN 00135193 CN00135193 CN 00135193 CN 00135193 A CN00135193 A CN 00135193A CN 1119543 C CN1119543 C CN 1119543C
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- pipe
- weld
- joint
- combined
- marmem
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Abstract
The present invention relates to a shape memory combination pipe member. A full circumference rotating weld technology with argon shield is adopted, namely that a memory pipe joint is connected with a base pipe to be welded through a connection weld, and a diameter changing belt arranged on the pipe wall near to the connection weld is used for relieving constraint generated by the circumference when the diameter is expanded and the reduced diameter is restored; thereby, the rigidity of the base pipe is prevented from influencing the behaviors of the shape memory. The present invention has the advantages that the structure is simple, valuable shape memory materials are saved, the total manufacture cost of the pipe member is lowered obviously, and the reliability of connecting pipelines is improved. Thus, the pipe member of the present invention can be widely used for connecting the pipelines in various fields, such as petrifaction, machinery, aviation, construction, etc.
Description
Technical field:
The present invention relates to a kind of combined pipe fitting and manufacturing process thereof, relate in particular to a kind of combined marmem pipe and manufacturing process thereof, the engineering pipeline that can be used for every field connects, and belongs to technical field of function materials.
Background technique:
In the prior art, generally all adopt the screw thread cutting ferrule to connect for composite pipe, complete in specifications as the equal tee pipe joint that maple leaf company in Zhejiang produces, use more in the engineering.But this linkage structure is very complicated, as the threeway of screw thread cutting ferrule, is made up of ten parts altogether, installs also comparatively loaded down with trivial details; Simultaneously appearance profile is huge, the copper cutting ferrule be connected the stainless steel color and differ, influence attractive in appearance; Its operational safety is also relatively poor in addition, especially after install connecting, is subjected to the external force effect to produce certain amount of deflection or short period when standing vibration or bearing the pulsation fatigue load, and often leak the joint.Adopted the shape-memory pipe joint to connect in recent years, the material that adopts has shape memory function, and it connects pipe can prevent leakage under the oscillating load condition, and successful Application is at aspects such as hydraulic air pipe and oil water injecting pipe and city water service pipes.This shape-memory pipe joint fitting operation is very convenient, as long as the shape-memory pipe joint that will expand in advance puts the pipe end of desire connection to dress, heating slightly, pipe joint is owing to will recover small-bore state, hold pipe securely tightly so begin to shrink, reach the purpose of connecting tube.Obviously, the pipe memory connection takes up room little, pipe-line system outward appearance grace.When straight line moved towards pipe with the connection of shape-memory pipe joint, cost is also lower, and was when particularly using iron-base marmem pipe joint, equally matched with other general Placement.But this shape-memory pipe joint is connected for elbow, threeway and other pipe fitting, owing to use many pipe joints or transiens pipe fitting, has then improved the overall cost of memory connection pipe fitting.
Summary of the invention:
The objective of the invention is to above-mentioned deficiency, a kind of combined marmem pipe and manufacturing process thereof of new structure is provided, make it to simplify and produce and installation procedure, reduce connection piping overall cost, improve operational safety at prior art.
For reaching such purpose; adopt marmem to make the electrostatic storage tube joint in the technological scheme of the present invention; adopt the argon gas inert gas shielding welder's skill of socializing entirely; make the electrostatic storage tube joint and can weld parent tube and link to each other, near the electrostatic storage tube joint tube wall the attachment weld, a reducing band is arranged by attachment weld.
Electrostatic storage tube joint of the present invention adopts shape-memory material, can be the nitinol memory material, copper base alloy memory material, or material such as iron-base marmem, and its quantity can be one, also can be two or more.Can weld that parent tube is meant can be with the cylindrical tube of electrostatic storage tube joint welding or swan neck or three-way pipe or threaded pipe or with the pipe of four jiaos or band hexagonal, or other steel tubing in different shapes.It is consistent with the interface shape of shape-memory pipe joint to weld parent tube, and the size correspondence links to each other with the electrostatic storage tube joint, and its material must guarantee to have weldability.The automatic weldering of attachment weld by argon shield, revolve arc-welding and form.Said reducing band can also be a concave ring groove, or the bulge loop platform, or shrinks sloping ring, or the sloping ring of expansion, in order to retrain around alleviation training hole enlargement and the answer undergauge, disturbs to prevent that the parent tube rigidity from producing the shape-memory behavior.
Combined marmem pipe working process of the present invention can be carried out according to the following steps: (1) parent tube is shaped: utilize the tube cavity oil pressure, by die forming, and form band sealing round end arm.(2) cutting interface: adopt cutter blade machinery to cut away arm sealing round end, form connection interface.(3) parent tube lead angle: use the lead angle lathe, cut out the outer lead angle of parent tube interface.(4) joint lead angle: utilize conical milling cutter, cut out lead angle in the shape-memory pipe joint end.(5) assembling chucking: utilize the lead angle conical surface to position assembling, pipe joint is plugged parent tube interface and chucking.(6) rotation protection: by the vertical axle of welding circular planes, rotational workpieces is also opened argon gas, carries out inert gas shielding, 10～25 rev/mins of workpiece rotational frequencies.(7) weldering of socializing entirely: control welding interval automatically, with the period of rotation coupling, reach full week welding, avoid weldering or stitch welding with Louing, revolving weldering voltage is 11～30V, revolves that to weld electric current be 110～240A.(8) roll extrusion ditch ring: utilize the axle mould of with groove, the outside is rolled into the reducing band.(9) annealing and pickling: be higher than austenite and reverse the annealing of change finishing temperature, through overpickling, phosphatization, saponification.(10) training reaming: adopt tapered punch, press the hole enlargement of pipe joint direction, withdraw from then.
The present invention possesses remarkable advantage, and combined marmem pipe adopts the integrated and preparation process composite structure of welding, has reduced the assembling of many parts, can save valuable shape-memory material, has simplified the parent tube structure simultaneously, has significantly reduced the overall cost of pipe fitting; Can simplify installation procedure, improve efficiency of construction; Owing to reduced engineering assembling tie point, improved the margin of safety that pipeline connects, make engineering construction more reliable; Utilize the reducing band to go deep into degree by the positioning control pipe in the structure, it is very convenient to construct; The baroque part forming of shape-memory is very difficult, and adopts welding composite structure of the present invention, has simplified technology, has improved the processed finished products rate.
Description of drawings
For understanding technological scheme of the present invention better, below describe in further detail by drawings and Examples.
Fig. 1 is a combined marmem pipe structural representation of the present invention.
Embodiment:
As shown in the figure, combined marmem pipe is made up of four parts: electrostatic storage tube joint 1, can weld parent tube 4, attachment weld 3 and reducing band 2, electrostatic storage tube joint 1 with can weld parent tube 4 and link to each other by attachment weld 3, it is corresponding with the interface of electrostatic storage tube joint 1 to weld parent tube 4, and both have weldability, on electrostatic storage tube joint 1 tube wall reducing band 2 is arranged near the attachment weld 3.
Attachment weld 3 forms by tungsten electrode argon shield weldering; reducing band 2 is used to alleviate the training hole enlargement and replys the constraint on every side of undergauge; prevent that the parent tube rigidity from producing interference to the shape-memory behavior; electrostatic storage tube joint 1 adopts shape-memory material to make; it can be the nitinol memory material; or the copper base alloy memory material, or the iron-base marmem material etc.
Embodiment 1
External diameter of pipe is the shape-memory stainless steel composite pipe spare of Φ 20mm; can weld basepipe materials is 0Cr18Ni9Ti; its pipe thickness is 1mm; the stainless steel material trade mark that the shape-memory pipe joint adopts is 0Cr12Ni6Si5Mn16; pipe thickness is 1mm; with lead angle in the shape-memory pipe joint with can weld the location assembling of the outer lead angle of parent tube interface; rotational workpieces is also opened argon gas; carrying out inert gas shielding welds automatically; 25 rev/mins of workpiece rotational frequencies revolve weldering voltage 24V, revolve weldering electric current 110A; utilize the axle mould of with groove, at the outside roll extrusion reducing of pipe joint band.Annealing process is 600 ℃, 30min, 30 ° of tapered punch cone angles, hole enlargement distortion 8%.Combined pipe fitting obtains good weld seam.
External diameter of pipe is the shape-memory stainless steel composite pipe spare of Φ 25mm; its pipe thickness is 1mm; can weld basepipe materials and shape-memory pipe joint material with embodiment 1; utilize argon shield to weld automatically; 20 rev/mins of workpiece rotational frequencies; revolve weldering voltage 11V, revolve weldering electric current 197A, other process parameters are with embodiment 1.Combined pipe fitting obtains good weld seam.
Embodiment 3
External diameter of pipe is the shape-memory stainless steel composite pipe spare of Φ 32mm; its pipe thickness is 1.2mm; can weld basepipe materials and shape-memory pipe joint material with embodiment 1; utilize argon shield to weld automatically; 15 rev/mins of workpiece rotational frequencies; revolve weldering voltage 12V, revolve weldering electric current 220A, other process parameters are with embodiment 1.Combined pipe fitting obtains good weld seam.
Embodiment 4
External diameter of pipe is the shape-memory stainless steel composite pipe spare of Φ 50mm; its pipe thickness is 1.5mm; can weld basepipe materials and shape-memory pipe joint material with embodiment 1; utilize argon shield to weld automatically; 10 rev/mins of workpiece rotational frequencies; revolve weldering voltage 30V, revolve weldering electric current 120A, other process parameters are with embodiment 1.Combined pipe fitting obtains good weld seam.
The present invention is simple in structure, and is easily manufactured, use reliably, and beautiful shape, the pipeline that can be widely used in a plurality of fields such as oil, chemical industry, machinery, aviation, food, pharmacy, building connects.
Claims (5)
1, a kind of combined marmem pipe, it is characterized in that adopting shape-memory material to make electrostatic storage tube joint (1), electrostatic storage tube joint (1) is corresponding with the interface that can weld parent tube (4), and continuous by attachment weld (3), on the tube wall of electrostatic storage tube joint (1) reducing band (2) is arranged near the attachment weld (3).
2, as the said combined marmem pipe of claim 1, it is characterized in that the shape-memory material that electrostatic storage tube joint (1) adopts is nitinol memory material, copper base alloy memory material or iron-base marmem material, its quantity is one, two or more.
3,, it is characterized in that to weld parent tube (4) and be reducing cylindrical tube, swan neck, three-way pipe, threaded pipe, with pipe or other steel tubing in different shapes of four jiaos or band hexagonal as the said combined marmem pipe of claim 1.
4,, it is characterized in that said reducing band (2) is concave ring groove or bulge loop platform or shrinks the slope ring or expansion slope ring as the said combined marmem pipe of claim 1.
5, a kind of manufacturing process of combined marmem pipe; it is characterized in that with lead angle in the shape-memory pipe joint with can weld the location assembling of the outer lead angle of parent tube interface; rotational workpieces is also opened argon gas; carry out inert gas shielding, 10～25 rev/mins of workpiece rotational frequencies, revolving weldering voltage is 11～30V; revolving the weldering electric current is 110～240A; and at the outside roll extrusion reducing of pipe joint band, annealing and pickling is by withdrawing from after the hole enlargement of pipe joint direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00135193 CN1119543C (en) | 2000-12-28 | 2000-12-28 | Combined marmem pipe and its manufacture technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00135193 CN1119543C (en) | 2000-12-28 | 2000-12-28 | Combined marmem pipe and its manufacture technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1299025A CN1299025A (en) | 2001-06-13 |
| CN1119543C true CN1119543C (en) | 2003-08-27 |
Family
ID=4596640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00135193 Expired - Fee Related CN1119543C (en) | 2000-12-28 | 2000-12-28 | Combined marmem pipe and its manufacture technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1119543C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102909523B (en) * | 2011-08-01 | 2014-12-31 | 上海格尔汽车金属制品有限公司 | Method for machining Y-shaped pipe |
| CN105064777B (en) * | 2015-08-19 | 2017-06-16 | 电子科技大学 | Intelligent tent based on marmem |
| CN109158619A (en) * | 2018-09-30 | 2019-01-08 | 安徽新芜精密装备制造产业技术研究院有限公司 | A kind of turning process of TiNi marmem |
-
2000
- 2000-12-28 CN CN 00135193 patent/CN1119543C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1299025A (en) | 2001-06-13 |
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| Date | Code | Title | Description |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: NINGBO TIANHE FUNCTIONAL MATERIALL CO., LTD. Free format text: FORMER OWNER: LIU WENXI Effective date: 20040514 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20040514 Address after: 315000, Ningbo Economic Development Zone, science and Technology Park, Golden Lion A2 - 3 floor Patentee after: Ningbo Tianhe functional material Co., Ltd. Address before: Minhang Chunshen Road 201100 Shanghai City No. 36 Lane 2518 Patentee before: Liu Wenxi |
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |