CN104896231A - Porous TiNi shape memory alloy composite gasket and production process thereof - Google Patents
Porous TiNi shape memory alloy composite gasket and production process thereof Download PDFInfo
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- CN104896231A CN104896231A CN201510072518.0A CN201510072518A CN104896231A CN 104896231 A CN104896231 A CN 104896231A CN 201510072518 A CN201510072518 A CN 201510072518A CN 104896231 A CN104896231 A CN 104896231A
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- 229910010380 TiNi Inorganic materials 0.000 title claims abstract description 92
- 229910001285 shape-memory alloy Inorganic materials 0.000 title claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 239000002131 composite material Substances 0.000 title abstract description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 28
- 239000010439 graphite Substances 0.000 claims abstract description 28
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 23
- 239000010935 stainless steel Substances 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 14
- 239000000203 mixture Substances 0.000 claims description 44
- 125000006850 spacer group Chemical group 0.000 claims description 39
- 239000000463 material Substances 0.000 claims description 25
- 238000004140 cleaning Methods 0.000 claims description 12
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 12
- 238000005516 engineering process Methods 0.000 claims description 11
- 238000005245 sintering Methods 0.000 claims description 10
- 239000010936 titanium Substances 0.000 claims description 10
- 238000003825 pressing Methods 0.000 claims description 6
- 238000012549 training Methods 0.000 claims description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- 238000004925 denaturation Methods 0.000 claims description 2
- 230000036425 denaturation Effects 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- 238000007906 compression Methods 0.000 abstract description 9
- 230000006835 compression Effects 0.000 abstract description 7
- 230000007797 corrosion Effects 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 3
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 230000001050 lubricating effect Effects 0.000 abstract 1
- 239000000956 alloy Substances 0.000 description 9
- 238000012360 testing method Methods 0.000 description 8
- 239000000523 sample Substances 0.000 description 6
- 238000007789 sealing Methods 0.000 description 6
- 230000032683 aging Effects 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 230000009466 transformation Effects 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000000227 grinding Methods 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 230000006399 behavior Effects 0.000 description 3
- 230000003116 impacting effect Effects 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 239000010963 304 stainless steel Substances 0.000 description 2
- 229910000619 316 stainless steel Inorganic materials 0.000 description 2
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000002929 anti-fatigue Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005049 combustion synthesis Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000000113 differential scanning calorimetry Methods 0.000 description 1
- 238000001938 differential scanning calorimetry curve Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/16—Flanged joints characterised by the sealing means
- F16L23/18—Flanged joints characterised by the sealing means the sealing means being rings
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C14/00—Alloys based on titanium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/10—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
- C22F1/18—High-melting or refractory metals or alloys based thereon
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Gasket Seals (AREA)
- Sealing Material Composition (AREA)
Abstract
A porous TiNi shape memory alloy composite gasket is characterized by consisting of a porous TiNi shape memory alloy plate (1), a graphite plate (2) and a stainless steel wrapping edge (3). Wherein the atomic percentage of the porous TiNi shape memory alloy is Ti: and Ni as the rest: (41-53%). The composite gasket manufactured by the method has the advantages of high compression rebound rate, high temperature resistance, corrosion resistance, fatigue resistance, high pressure bearing capacity and good safety and reliability by utilizing the superelasticity, low density, low elastic modulus, high temperature resistance and vibration absorption performance of the porous TiNi shape memory alloy and the flexible lubricating performance of graphite.
Description
Technical field
The present invention relates to a kind of porous TiNi marmem Composition spacer and production technology, belong to static seal field.
Background technique
Gasket seal is element the most key in Flanged Connection System, is also the critical piece of thrashing.Thrashing often pad lost efficacy and to cause.The polymer pad of Long-Time Service is easily aging; Common stainless steel or aluminum gasket seal due to springform large, sealing effect is affected, and under the state stretched at long term high temperature, the easy creep relaxation of bolt, metallic shim resilience is poor in addition, cannot ensure reliable and effective sealability.
TiNi marmem has using value and the best intelligent alloy material of performance in current all marmems most, has shape memory and superelasticity, and good bio-compatibility, heat-resisting quantity, corrosion resistance, wear resistance etc.More and more extensive in the application in the fields such as biomedicine neck, mechanical engineering and Aero-Space.At present at home, the research work of applying on gasket seal marmem is just at the early-stage.
Gjunter in 1994 etc. adopt and the combustion synthesis method of industrial applications can prepare porous TiNi marmem and after being used as the substitute of bone, porous TiNi marmem starts the interest causing various countries scientist, this is because porous TiNi marmem have concurrently shape memory, superelasticity, low density, high compression rebound elasticity, heat insulation vibrationproof, without advantages such as magnetic avirulent and good bio-compatibilities.In recent years, China has adopted kinds of processes method to prepare porous TiNi marmem, and has carried out correlative study to its performance.But at present porous TiNi marmem and traditional material to be combined and the research work be applied on gasket seal not yet finds.
The fast development of modern industry, more and more stricter to the requirement of gasket seal material, reduce leak-down rate, lightweight, prolongation pad life-span imperative.Select high-performance new property sealing material, development composite sealing pad improves sealability has become a kind of trend.
Summary of the invention
The object of this invention is to provide a kind of porous TiNi marmem Composition spacer and production technology thereof.This kind of pad utilizes the superelasticity of marmem to provide the sealing impacting force of Bolted Flanged Connection, utilizes the soft greasy property of graphite, protects flange facing.This Composition spacer has that modulus of elasticity in comperssion is little, absorbing, the advantage that high temperature resistant, corrosion-resistant, antifatigue, bearing capacity are high and safety reliability is good.
The present invention adopts following technological scheme:
A kind of porous TiNi marmem Composition spacer, it is characterized in that: be made up of porous TiNi marmem plate (1), graphite cake (2) and stainless steel bound edge (3), two surfaces up and down of described porous TiNi marmem plate (1) are respectively equipped with a graphite cake (2), in sandwich structure, stainless steel bound edge (3) is arranged on the edge of pad, and chimeric with graphite cake (2).
More than the atom percent Ti:Ni=of the material of described porous TiNi marmem plate (1): (41 ~ 53%), porosity ratio is 10 ~ 80 ﹪, and aperture is 10 ~ 500 μm.
Modulus of elasticity in comperssion 1.08 ~ the 22GPa of described porous TiNi marmem Composition spacer.
The rebound degree of described porous TiNi marmem Composition spacer is 70 ~ 96%.
The present invention adopts following technological scheme:
Prepare porous TiNi raw shape memory alloy, wherein more than titanium atomic percent nickel Ti:Ni=: (41 ~ 53).Sintering synthetic plate, the thickness of plate material is 2 ~ 4mm;
Light sheet material is cut to gasket seal size requirement, and is milled to 1.4 ~ 3.5mm by two-sided for pad;
Adopt thermal-mechanical treatment mode to carry out superelasticity training to porous TiNi marmem, wherein processing mode comprises denaturation and timeliness;
Porous TiNi marmem pad is done cleaning, then uses graphite cake pressing and wrapping, wherein graphite thickness of slab 0.5 ~ 1mm after compacting;
Coated good pad is carried out the process of inside and outside stainless steel bound edge, and stainless steel is 304 or 316 stainless steels, and thickness is 0.1 ~ 0.2mm;
To gasket surface cleaning, then come into operation.
In the porous marmem Composition spacer finally obtained, the porosity ratio of porous TiNi marmem plate (1) is 10 ~ 80 ﹪, 10 ~ 800 μm, aperture.
In the porous TiNi marmem Composition spacer finally obtained, the modulus of elasticity in comperssion of porous TiNi marmem Composition spacer is 1.08 ~ 22GPa.
The porous TiNi marmem Composition spacer rebound degree finally obtained is 70 ~ 96%.
Of the present invention proposed porous TiNi marmem Composition spacer has following characteristics:
1) what porous TiNi marmem composite sealing pad porous TiNi marmem used existed in compression with the process of unloading spring-back that stress and strain brings out is deformed into mutually.Transformation behavior and porosity make the less in compression process Elastic Modulus than common metal pad of this Composition spacer, and unloading spring-back is larger;
2) because TiNi marmem is porous material, have superelasticity in addition, can play good shock attenuation result, this has positive effect to flanged connection system Long-Time Service;
3) in long term high temperature running, bolt generation creep relaxation phenomenon, the superelasticity of porous TiNi marmem can guarantee the sealing impacting force on flanged surface;
4) graphite softness lubrication, decreases the damage of pad to flange facing;
5) bound edge inside and outside stainless steel, plays certain fixation for coming off of graphite during installation on the one hand, improves the sealability of pad on the other hand.
Accompanying drawing explanation
The plan view of Fig. 1 porous TiNi marmem Composition spacer.
The plan view section amplification figure of Fig. 2 porous TiNi marmem Composition spacer.
In figure: 1, porous TiNi marmem plate, 2, graphite cake, 3, stainless steel bound edge.
Fig. 3 is the DSC plotted curve of porous TiNi alloys sample temperature-rise period.
Fig. 4 is the DSC plotted curve of porous TiNi alloys sample temperature-fall period.
The compression rebound curve of the porous TiNi marmem of Fig. 5 different porosities.
In figure: a, porosity ratio 37.7 ± 3.1%, b, porosity ratio 37.9 ± 3.6%, c, porosity ratio 41.0 ± 1.4%, d, porosity ratio 48.0 ± 4.6%.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.
As Fig. 1 to 5, by ASME B16.47 standard measure determination pad dimension of inner and outer diameters,
Embodiment 1.
The atom percent Ti:Ni=50%:50% of porous TiNi marmem plate material of the present invention, porosity ratio 37.7 ± 3.1%, aperture 50 ~ 250mm.
Production technology of the present invention is as follows:
(1) prepare porous TiNi shape memory alloy material, material composition is requirement as above, sintering temperature 850 DEG C, sintering synthetic plate, and thickness is about 3mm;
(2) by the size requirement of ASME B16.47 standard Intermediate gasket, sheet material Linear cut is become internal diameter 48mm, external diameter 52.12mm plain cushion, and two-sided plain grinding is to 2mm;
(3) carry out thermal-mechanical cycle training to porous TiNi marmem pad, wherein aging temp is 450 DEG C, duration 30min;
Porous TiNi marmem pad is done cleaning, then uses graphite cake pressing and wrapping, wherein graphite thickness of slab 0.5mm ~ 1mm after compacting;
Coated good pad is carried out inside and outside 316 stainless steel bound edge process, stainless steel thickness 0.1 ~ 0.2mm;
To gasket surface cleaning, then come into operation.
Embodiment 2.
The atom percent Ti:Ni=50%:50% of porous TiNi marmem plate material of the present invention, porosity ratio 37.9 ± 3.6%, aperture 50 ~ 250mm
Production technology of the present invention is as follows:
(1) prepare porous TiNi shape memory alloy material, material composition is requirement as above, sintering temperature 900 DEG C, sintering synthetic plate, and thickness is about 2.5mm;
(2) by the size requirement of ASME B16.47 standard Intermediate gasket, sheet material Linear cut is become internal diameter 48mm, external diameter 52.12mm plain cushion, and two-sided plain grinding is to 2mm;
(3) carry out thermal-mechanical cycle training to porous TiNi marmem pad, wherein aging temp is 450 DEG C, duration 30min;
Porous TiNi marmem pad is done cleaning, then uses graphite cake pressing and wrapping, wherein graphite thickness of slab 0.5 ~ 1mm after compacting;
Coated good pad is carried out inside and outside 316 stainless steel bound edge process, stainless steel thickness 0.1 ~ 0.2mm;
To gasket surface cleaning, then come into operation.
Embodiment 3
The atom percent Ti:Ni=50%:50% of porous TiNi marmem plate material of the present invention, porosity ratio 41.0 ± 1.4%, aperture 50 ~ 250mm
Production technology of the present invention is as follows:
(1) prepare porous TiNi shape memory alloy material, material composition is requirement as above, sintering temperature 950 DEG C, sintering synthetic plate, and thickness is about 2.5mm;
(2) by the size requirement of ASME B16.47 standard Intermediate gasket, sheet material Linear cut is become internal diameter 48mm, external diameter 52.12mm plain cushion, and two-sided plain grinding is to 2mm;
(3) carry out thermal-mechanical cycle training to porous TiNi marmem pad, wherein aging temp is 450 DEG C, duration 30min;
Porous TiNi marmem pad is done cleaning, then uses graphite cake pressing and wrapping, wherein graphite thickness of slab 0.5 ~ 1mm after compacting;
Coated good pad is carried out inside and outside 304 stainless steel bound edge process, stainless steel thickness 0.1 ~ 0.2mm;
To gasket surface cleaning, then come into operation.
Embodiment 4
The atom percent Ti:Ni=50%:50% of porous TiNi marmem plate material of the present invention, porosity ratio 41.0 ± 1.4%, aperture 50 ~ 250mm
Production technology of the present invention is as follows:
(1) prepare porous TiNi shape memory alloy material, material composition is requirement as above, sintering temperature 1000 DEG C, sintering synthetic plate, and thickness is about 2.5mm;
(2) by the size requirement of ASME B16.47 standard Intermediate gasket, sheet material Linear cut is become internal diameter 48mm, external diameter 52.12mm plain cushion, and two-sided plain grinding is to 2mm;
(3) carry out thermal-mechanical cycle training to porous TiNi marmem pad, wherein aging temp is 450 DEG C, duration 30min;
Porous TiNi marmem pad is done cleaning, then uses graphite cake pressing and wrapping, wherein graphite thickness of slab 0.5 ~ 1mm after compacting;
Coated good pad is carried out inside and outside 304 stainless steel bound edge process, stainless steel thickness 0.1 ~ 0.2mm;
To gasket surface cleaning, then come into operation.
The phase transformation temperature points of porous TiNi marmem plate material adopts differential scanning calorimetry to measure, the rate of heat addition be 10 DEG C/min, phase transition temperature DSC curve as shown in Figure 3 and Figure 4.
To the compression performance of four kinds of Composition spacers with an Instron mechanics test system test pad, its mid strain rate is 3.33 × 10
-3s
-1, probe temperature is at 60 DEG C.
According to testing the stress-strain curves that obtains, and calculate the Young's modulus of pad, compressibility and rebound degree.
Test result is as shown in table 1.
Table 1 is the compression-resilience test result of porous TiNi marmem Composition spacer.
Compression-resilience the test result of table 1. porous TiNi marmem Composition spacer
| Specimen coding | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 |
| Compressibility, % | 9.8 | 9.0 | 9.1 | 6.9 |
| Rebound degree, % | 92.8 | 93.2 | 93.1 | 91.8 |
| Young's modulus, GPa | 2.40～15.84 | 2.67～21.96 | 2.64～19.31 | 3.48～22.00 |
Proof stress-strain curve as shown in Figure 5, can be found out from curve and can find out that obvious phase transformation platform does not appear in porous TiNi marmem Composition spacer under compressive loading from curve; Curve entirety constantly raises in slope; There is transformation behavior in compression process, transformation behavior improves compressibility and the rebound degree of gasket seal.
Relative to aluminium plain cushion, metal wound gasket and stainless steel octangonal ring, porous TiNi marmem Composition spacer resilience is better, and has better decay resistance; Compared with stainless steel metal or composition metal sealing gasket, the Young's modulus of porous TiNi marmem Composition spacer is little, and compressibility is large.TiNi alloy gasket seal is applied widely, can improve the sealability of Bolted Flanged Connection in the process industrial devices such as pressurized container, manufacturing equipment, power machine and connecting tube, this is for ensureing that the safety and reliability of entire system is significant.
According to testing the stress-strain curves that obtains, and calculate the Young's modulus of current material pad sample, compressibility and rebound degree, test result is as shown in table 2.
| Sample type | Aluminium plain cushion | Metal wound gasket | Stainless steel (0Cr18Ni98) | Embodiment |
| Compressibility, % | ≈2.1 | 20～29 | 0.2～0.9 | 4.9～8.0 |
| Rebound degree, % | ≈7.6 | 14～21 | 33～60 | 84.6～94.3 |
| Young's modulus, GPa | ≈70 | — | ≈190 | 2.40～22.00 |
Below in conjunction with accompanying drawing, the present invention will be described in detail, can be easier to be readily appreciated by one skilled in the art, thus make more explicit defining to protection scope of the present invention to make advantages and features of the invention.
As shown in Figures 1 to 3, the present invention includes: the Composition spacer that porous TiNi marmem plate (1), graphite cake (2) and stainless steel bound edge (3) form.
Described porous TiNi marmem plate (1), due to the existence in space, when porous TiNi marmem is subject to pretightening force compression, external pressurized stress easily makes the space wall generation compressive strain in material, especially, when material reaches the hyperelastic strain limit of fine and close TiNi alloy (8%), the deformation degree of its space wall is often lower than the deformation degree of whole sample.When external force unloads, the deformation of material pore wall is replied, and hole entirety is replied, " the volume memory effect " of Here it is porous material.The compression rebound curve of the porous TiNi marmem Composition spacer of different porosities as shown in Figure 5.
Owing to there is characteristic and the superelasticity in hole in described porous TiNi marmem plate (1), when container inner medium pressure surge, porosity characteristic has the effect of good absorbing damping, and elastic performance then supplements a part of losing due to pad and being separated of flange facing and seals impacting force.
Described graphite cake coated (2) porous TiNi marmem plate (1).On the one hand, the performance that the softness of graphite can be utilized to lubricate is to reduce the damage of pad to flange facing; On the other hand, the more important thing is the perforate filling up porous TiNi marmem surface, prevent media leaks from porous TiNi marmem, causing timeliness.
Described stainless steel bound edge (3), on the one hand, plays the effect of fixing graphite cake; On the other hand, prevent medium from seepage inside pad, and play the effect strengthening gasket strength.
Should be understood that; the foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (8)
1. a porous TiNi marmem Composition spacer, it is characterized in that: form Composition spacer by porous TiNi marmem plate (1), graphite cake (2) and stainless steel bound edge (3), two surfaces up and down of described porous TiNi marmem plate (1) are respectively equipped with a graphite cake (2), in sandwich structure, stainless steel bound edge (3) is arranged on the edge of pad, and chimeric with graphite cake (2).
2. porous TiNi marmem Composition spacer according to claim 1, it is characterized in that: more than the atom percent Ti:Ni=of the material of described porous TiNi marmem plate (1): (41 ~ 53%), porosity ratio is 10 ~ 80 ﹪, and aperture is 10 ~ 500 μm.
3. porous TiNi marmem Composition spacer according to claim 1, is characterized in that: the modulus of elasticity in comperssion 1.08 ~ 22GPa of described porous TiNi marmem Composition spacer.
4. porous TiNi marmem Composition spacer according to claim 1, is characterized in that: the rebound degree of described porous TiNi marmem Composition spacer is 70 ~ 96%.
5. a production technology for porous TiNi marmem Composition spacer, is characterized in that comprising the following steps:
1) porous TiNi raw shape memory alloy is prepared, wherein more than titanium atomic percent nickel Ti:Ni=: (41 ~ 53%); Sintering synthetic plate, the thickness of sheet material is 2 ~ 4mm;
2) light sheet material is cut to gasket seal size requirement, and is milled to 1.4 ~ 3.5mm by two-sided for pad;
3) thermal-mechanical treatment mode is adopted to carry out superelasticity training, comprising denaturation and timeliness to porous TiNi marmem pad;
4) porous TiNi marmem pad is done cleaning, then use the two-sided pressing and wrapping of graphite cake, the graphite thickness of slab 0.5 ~ 1mm wherein after compacting;
5) coated good porous TiNi marmem Composition spacer is carried out the process of inside and outside stainless steel bound edge, stainless steel is 304 or 316 stainless steels, thickness 0.1 ~ 0.2mm;
6) to gasket surface cleaning, then come into operation.
6. the production technology of porous TiNi marmem Composition spacer according to claim 5, it is characterized in that: in the porous TiNi marmem Composition spacer finally obtained, the porosity ratio of porous TiNi marmem plate (1) is 10 ~ 80 ﹪, and aperture is 10 ~ 500 μm.
7. the production technology of porous TiNi marmem Composition spacer according to claim 5, is characterized in that: in the porous TiNi marmem Composition spacer finally obtained, the modulus of elasticity in comperssion of porous TiNi marmem Composition spacer is 1.08 ~ 22GPa.
8. the production technology of porous TiNi marmem Composition spacer according to claim 5, is characterized in that: the rebound degree 70 ~ 96% of the porous TiNi marmem Composition spacer finally obtained.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510072518.0A CN104896231B (en) | 2015-02-11 | 2015-02-11 | Porous TiNi shape memory alloy composite gasket and production process thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510072518.0A CN104896231B (en) | 2015-02-11 | 2015-02-11 | Porous TiNi shape memory alloy composite gasket and production process thereof |
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| CN104896231B CN104896231B (en) | 2018-02-09 |
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| JPS59104459A (en) * | 1982-12-07 | 1984-06-16 | Sumitomo Electric Ind Ltd | Preparation of shape memory alloy material |
| CN201439818U (en) * | 2009-07-10 | 2010-04-21 | 舟山市金寿船舶机械有限公司 | composite gasket |
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