CN108941243A - A kind of iron-based/Ni-Ti-based shape memory alloy composite pipe production method - Google Patents
A kind of iron-based/Ni-Ti-based shape memory alloy composite pipe production method Download PDFInfo
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- CN108941243A CN108941243A CN201810668601.8A CN201810668601A CN108941243A CN 108941243 A CN108941243 A CN 108941243A CN 201810668601 A CN201810668601 A CN 201810668601A CN 108941243 A CN108941243 A CN 108941243A
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- iron
- shape memory
- memory alloy
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- pipe
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture 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
- B21C37/15—Making tubes of special shape; Making tube fittings
- B21C37/28—Making tube fittings for connecting pipes, e.g. U-pieces
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention discloses a kind of iron-based/Ni-Ti-based shape memory alloy composite pipe production methods, belong to marmem and Technology of Plastic Processing field, the following steps are included: satisfactory TiNi base shape memory alloy tube base is inserted into iron-base marmem pipe base, the two reaches interference fit, solder joint will be applied at the interface cohesion at multiple tube embryo both ends using arc welding to be fixed, extrusion molding is carried out to iron-based/Ni-Ti-based shape memory alloy multiple tube using Isothermal Extrusion fixture for forming later, and mould pressing is carried out to iron-based/Ni-Ti-based shape memory alloy multiple tube by ball spinning fixture for forming, modification finally is optimized to the multiple tube completed the process.The present invention realizes the interface cohesion of xenogenesis marmem multiple tube by the combined shaping method that Isothermal Extrusion forming and ball spinning forming combine, the xenogenesis marmem multiple tube for obtaining high quality, realizes the Accurate Shaping of xenogenesis marmem multiple tube.
Description
Technical field
The invention belongs to marmem and Technology of Plastic Processing fields, and in particular to a kind of iron-based/NiTi base shape
Memorial alloy composite pipe production method.
Background technique
Marmem has been obtained extensively as a kind of functional material with shape memory effect in engineering field
General application.Currently, iron-base marmem and Ni-Ti-based shape memory alloy are the more mature two class shapes notes of development
Recall alloy.Marmem engineer application example the most successful is exactly marmem pipe joint, is mainly used in boat
Empty space flight, petrochemical industry and nuclear industry piping connection.The basic principle of marmem pipe joint application is in low temperature horse
Marmem pipe joint is mutually carried out a certain amount of expanding deformation by family name's body, and then connected tube is inserted into pipe fitting,
Marmem pipe joint is heated to austenite phase again, connection is completed in pipe fitting contraction distortion due to shape memory effect.
The pipe fitting the most mature of application at present is Ni-Ti-based shape memory alloy pipe fitting, because of Ni-Ti-based shape memory alloy intensity
Height, recoverable strain is big, restoring force is big, corrosion resistance is high, compared with threaded connection and welded connecting, Ni-Ti-based shape memory alloy
Pipe fitting is easy for installation, high reliablity, No leakage, light-weight, is especially suitable for the connection of xenogenesis tubing.
Currently, airplane Hydraulic Tube is all made of the connection of Ni-Ti-based shape memory alloy pipe fitting both at home and abroad.However, NiTi base
The marmem pipe joint hysteresis of phase transformation is narrow, and processing and manufacturing is difficult, usually to store transport in liquid nitrogen, therefore it is at shape
The core technology made still is monopolized by western developed country, and Ni-Ti-based shape memory alloy pipe used by home-built aircraft connects at present
Head is main all from western countries' import, and prices are rather stiff.Although iron-base marmem pipe joint has intensity height, cost
The low, advantages such as hot-working character is good, the hysteresis of phase transformation is wide, but recoverable strain and restoring force are also smaller, and corrosion resistance is not also high.
Therefore, for the respective advantage and disadvantage of two kinds of pipe fittings, it is compound that this patent proposes manufacture xenogenesis marmem
The new method of pipe, i.e., by Ni-Ti-based shape memory alloy pipe and iron-base marmem pipe combined shaping, using Isothermal Extrusion
Forming and ball spinning forming composite method prepare internal layer be Ni-Ti-based shape memory alloy pipe, outer layer be iron-base shape memory close
The multiple tube of golden pipe.
Summary of the invention
The purpose of the present invention is to provide a kind of iron-based/Ni-Ti-based shape memory alloy composite pipe production methods, pass through
The combined shaping method that warm-extrusion forming and ball spinning forming combine realizes the interface of xenogenesis marmem multiple tube
In conjunction with obtaining the xenogenesis marmem multiple tube of high quality, realize the Accurate Shaping of xenogenesis marmem multiple tube.
The object of the present invention is achieved like this:
The invention discloses a kind of iron-based/Ni-Ti-based shape memory alloy composite pipe production methods, mainly pass through following step
It is rapid to realize:
(1) iron-base marmem pipe base and TiNi base shape memory alloy tube base are selected according to demand, by pipe
Surfaces externally and internally cleans up, and TiNi base shape memory alloy tube base is inserted into iron-base marmem pipe base later, makes two
Person reaches interference fit；
(2) it is tied using interface of the arc welding to iron-based/Ni-Ti-based shape memory alloy composite pipe blank both ends of interference fit
Apply solder joint at conjunction, prevent in subsequent extrusion and spinning process, aggravates the relative motion between pipe；
(3) Isothermal Extrusion fixture for forming is fixed on press machine, by iron-based/Ni-Ti-based shape memory alloy composite pipe blank
It is heated to 800~900 DEG C in a vacuum furnace, while the Extruding die in Isothermal Extrusion fixture for forming is heated to 800~900
DEG C, then iron-based/Ni-Ti-based shape memory alloy composite pipe blank is put into Extruding die, press machine is started, makes Isothermal Extrusion
Extruding punch in fixture for forming moves downward, and realizes the extrusion molding of iron-based/Ni-Ti-based shape memory alloy multiple tube；
(4) ball spinning fixture for forming is fixed on spinning machine, by iron-based/Ni-Ti-based shape memory after extrusion molding
Alloy composite pipe base one end processes one and the gap that positioning block size matches on spinning tool, and the other end processes and ball
Then the chamfering that size is consistent covers the composite pipe blank on the core model assembled in order to biting for ball, make pipe gap
Place is stuck on locating piece；
(5) pipe and tooling are heated with firelock simultaneously, temperature are measured using thermocouple, when blank temperature reaches 800~
900 DEG C start to carry out spinning, carry out mould pressing with retrograde manner, core model drives pipe to carry out axial feed motion, modular ring band
Dynamic ball carries out high speed rotation；
(6) waste material at the marmem pipe joint both ends after mould pressing is removed by being machined.
Preferably, the iron-base marmem pipe base and TiNi base shape memory alloy tube base in the step (1)
It needs to select original dimension and ingredient according to actual processing.
Preferably, the material of the extruding punch in Isothermal Extrusion fixture for forming described in step (3) and cavity plate is all adopted
Wolfram steel is used with the material of hot die steel H13 steel, die plate insert.
Preferably, the material of the component part of ball spinning fixture for forming described in step (4) all uses Forming Die
Has steel H13 steel.
Preferably, chamfer angle described in step (4) is 1/4t0× 45 °, wherein t0For iron-based/Ni-Ti-based shape memory
The wall thickness of alloy composite pipe outer tube embryo.
Preferably, in step (5) spinning pass number and per pass Reducing thickness according to size needs, required precision and ball ruler
Very little determination, the optional 0.8~1.2mm/r of feed ratio.
The beneficial effects of the present invention are: the xenogenesis marmem multiple tube of the method processing proposed through the invention
With functionally gradient, capability gradient, component gradient and structure gradient, it is respective to combine two kinds of marmems
Advantage compensates for respective deficiency.When the xenogenesis marmem multiple tube is used as pipe fitting, inner layer metal belongs to NiTi base
Marmem and maintain good shape memory effect and corrosion resistance, and outer layer metal belongs to iron-base marmem
And there is lower material cost and good processing performance.
When heretofore described iron-based/Ni-Ti-based shape memory alloy multiple tube is used as pipe fitting expanding load deflection,
Very big strain occurs for the Ni-Ti-based shape memory alloy of internal layer, and lesser answer then occurs for the iron-base marmem of outer layer
Become, therefore the shape recovery strain of ectonexine marmem can be made full use of.
The shape memory of heretofore described iron-based/Ni-Ti-based shape memory alloy multiunit tube joint and single component closes
Golden pipe fitting is compared, and in terms of cost performance, is had apparent advantage, can be widened the engineer application of marmem pipe joint
Range.
In addition, becoming second nature technology using the precision plastic forming that Isothermal Extrusion and ball spinning combine, the xenogenesis shape is realized
The joint forming of shape memory alloys multiple tube first passes through Isothermal Extrusion forming technique and realizes xenogenesis marmem multiple tube
Metallurgical interface combine, accurate system is then carried out to the xenogenesis marmem multiple tube after extrusion molding by ball spinning
It makes, advantageously ensures that the net forming and dimensional accuracy of multiple tube.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of iron-based/Ni-Ti-based shape memory alloy multiple tube in the present invention；
Fig. 2 is that iron-based in the present invention/Ni-Ti-based shape memory alloy multiple tube Isothermal Extrusion shapes schematic diagram；
Fig. 3 is that iron-based in the present invention/Ni-Ti-based shape memory alloy multiple tube ball spinning shapes schematic diagram.
Specific embodiment
The present invention is described further with reference to the accompanying drawing.
In conjunction with Fig. 1 to Fig. 3, the invention discloses a kind of iron-based/Ni-Ti-based shape memory alloy composite pipe production methods, lead to
It crosses Isothermal Extrusion forming and ball spinning shapes the combined shaping method combined, realize xenogenesis marmem multiple tube
Interface cohesion obtains the xenogenesis marmem multiple tube of high quality, realizes the accurate of xenogenesis marmem multiple tube
Forming.
Concrete implementation technical solution is as follows:
Step 1: the iron-base marmem pipe base and NiTi base shape of selection certain size and ingredient are remembered as needed
Recall alloy pipe stock, the surfaces externally and internally of pipe is cleaned up, TiNi base shape memory alloy tube base is then inserted into iron-based shape
In memorial alloy pipe, the two is made to reach interference fit.
Step 2: using arc welding to the boundary at iron-based/Ni-Ti-based shape memory alloy composite pipe blank both ends of interference fit
Face junction applies several solder joints, prevents in the relative motion in subsequent extrusion and spinning process between pipe.
Step 3: Isothermal Extrusion fixture for forming shown in Fig. 2 is fixed on press machine, which includes: screw
1, upper die holder 2, upper die plate 3, upper mould fixed plate 4, extruding punch 5, cushion block 6, porcelain tube 7, resistance wire 8, cavity plate 9, pin 10, under
Die holder 11, liftout pipe 12, cavity plate backing plate 13, guide post 14, die plate insert 15, guide sleeve 18.
Step 4: iron-based/Ni-Ti-based shape memory alloy composite pipe blank is heated to 800~900 DEG C in a vacuum furnace, together
When Extruding die is heated to 800~900 DEG C, then iron-based/Ni-Ti-based shape memory alloy composite pipe blank is put into squeeze it is recessed
In mould, press machine is started, moves downward extruding punch, realizes being squeezed into for iron-based/Ni-Ti-based shape memory alloy multiple tube
Shape.
Step 5: ball spinning fixture for forming shown in Fig. 3 is fixed on spinning machine, the structure packet of the spinning tool
It includes: screw 1, pin 10, modular ring 19, core model 20, ball 21, baffle 22, stripper 23.
Step 6: by iron-based/Ni-Ti-based shape memory alloy composite pipe blank one end after extrusion molding process one with
The gap that block size matches is positioned on spinning tool, the other end processes 1/4t0 × 45 ° (wall thickness that t0 is outer layer pipe)
Chamfering, in order to biting for ball.Then the composite pipe blank is covered on the core model assembled, is stuck in pipe opening position fixed
On the block of position.
Step 7: carrying out mould pressing with retrograde manner, core model drives pipe to carry out axial feed motion, and modular ring drives rolling
Pearl carries out high speed rotation.First pipe and tooling are heated with firelock simultaneously before spinning, temperature is measured using thermocouple, when pipe temperature
Degree reaches 800~900 DEG C and starts to carry out mould pressing.Spinning pass number and per pass Reducing thickness are wanted according to size needs, precision
Ball size of summing is determining, the optional 0.8~1.2mm/r of feed ratio.
Step 8: deflashing.The waste material at the marmem pipe joint both ends after mould pressing is passed through into machining
Method remove.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of iron-based/Ni-Ti-based shape memory alloy composite pipe production method, which is characterized in that main to pass through following steps reality
It is existing:
(1) iron-base marmem pipe base and TiNi base shape memory alloy tube base are selected according to demand, inside and outside pipe
Surface clean is clean, and TiNi base shape memory alloy tube base is inserted into iron-base marmem pipe base later, reaches the two
To interference fit；
(2) at using arc welding to the interface cohesion at iron-based/Ni-Ti-based shape memory alloy composite pipe blank both ends of interference fit
Apply solder joint, prevent in subsequent extrusion and spinning process, aggravates the relative motion between pipe；
(3) Isothermal Extrusion fixture for forming is fixed on press machine, by iron-based/Ni-Ti-based shape memory alloy composite pipe blank true
It is heated to 800~900 DEG C in empty furnace, while the Extruding die in Isothermal Extrusion fixture for forming is heated to 800~900 DEG C, so
After iron-based/Ni-Ti-based shape memory alloy composite pipe blank is put into Extruding die, start press machine, make Isothermal Extrusion shape work
Extruding punch in dress moves downward, and realizes the extrusion molding of iron-based/Ni-Ti-based shape memory alloy multiple tube；
(4) ball spinning fixture for forming is fixed on spinning machine, by iron-based/Ni-Ti-based shape memory alloy after extrusion molding
Composite pipe blank one end processes one and the gap that positioning block size matches on spinning tool, and the other end processes and ball size
Then the chamfering being consistent covers the composite pipe blank on the core model assembled in order to biting for ball, make pipe opening position card
On locating piece；
(5) pipe and tooling are heated with firelock simultaneously, temperature is measured using thermocouple, when blank temperature reaches 800~900 DEG C
Start to carry out spinning, mould pressing is carried out with retrograde manner, core model drives pipe to carry out axial feed motion, and modular ring drives ball
Carry out high speed rotation；
(6) waste material at the marmem pipe joint both ends after mould pressing is removed by being machined.
2. one kind according to claim 1 is iron-based/Ni-Ti-based shape memory alloy composite pipe production method, feature exists
In: iron-base marmem pipe base and TiNi base shape memory alloy tube base in the step (1) add according to actual
Work needs to select original dimension and ingredient.
3. one kind according to claim 1 is iron-based/Ni-Ti-based shape memory alloy composite pipe production method, feature exists
In: the material of extruding punch and cavity plate in Isothermal Extrusion fixture for forming described in step (3) all uses hot die steel
The material of H13 steel, die plate insert uses wolfram steel.
4. one kind according to claim 1 is iron-based/Ni-Ti-based shape memory alloy composite pipe production method, feature exists
In: the material of the component part of ball spinning fixture for forming described in step (4) all uses hot die steel H13 steel.
5. one kind according to claim 1 is iron-based/Ni-Ti-based shape memory alloy composite pipe production method, feature exists
In: chamfer angle described in step (4) is 1/4t0× 45 °, wherein t0Outside for iron-based/Ni-Ti-based shape memory alloy multiple tube
The wall thickness of layer pipe embryo.
6. one kind according to claim 1 is iron-based/Ni-Ti-based shape memory alloy composite pipe production method, feature exists
In: in step (5) spinning pass number and per pass Reducing thickness according to size needs, required precision and ball size determine, feeding
Than optional 0.8~1.2mm/r.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810668601.8A CN108941243B (en) | 2018-06-26 | 2018-06-26 | Method for manufacturing iron-based/nickel titanium-based shape memory alloy composite pipe |
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|---|---|---|---|
| CN201810668601.8A CN108941243B (en) | 2018-06-26 | 2018-06-26 | Method for manufacturing iron-based/nickel titanium-based shape memory alloy composite pipe |
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| CN108941243B CN108941243B (en) | 2020-06-16 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109848665A (en) * | 2019-02-26 | 2019-06-07 | 武汉理工大学 | The preparation method of overlay clad hot-work die |
| CN111151756A (en) * | 2020-01-20 | 2020-05-15 | 广东省新材料研究所 | 4D printing rapid manufacturing method of shape memory alloy pipe joint and product |
| CN113182414A (en) * | 2021-05-10 | 2021-07-30 | 哈尔滨韦玛通信工程有限公司 | Continuous spinning bonding combination equipment for copper-clad steel grounding rod |
| CN116604697A (en) * | 2023-06-20 | 2023-08-18 | 江苏江扬建材机械有限公司 | Vibrating device for mandrel vibrating pipe making machine |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109848665A (en) * | 2019-02-26 | 2019-06-07 | 武汉理工大学 | The preparation method of overlay clad hot-work die |
| CN111151756A (en) * | 2020-01-20 | 2020-05-15 | 广东省新材料研究所 | 4D printing rapid manufacturing method of shape memory alloy pipe joint and product |
| CN111151756B (en) * | 2020-01-20 | 2021-12-03 | 广东省科学院新材料研究所 | 4D printing rapid manufacturing method of shape memory alloy pipe joint and product |
| CN113182414A (en) * | 2021-05-10 | 2021-07-30 | 哈尔滨韦玛通信工程有限公司 | Continuous spinning bonding combination equipment for copper-clad steel grounding rod |
| CN116604697A (en) * | 2023-06-20 | 2023-08-18 | 江苏江扬建材机械有限公司 | Vibrating device for mandrel vibrating pipe making machine |
| CN116604697B (en) * | 2023-06-20 | 2024-05-03 | 江苏江扬建材机械有限公司 | Vibrating device for mandrel vibrating pipe making machine |
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