CN1062060C - Shape-memory stainless steel joint for pipeline - Google Patents
Shape-memory stainless steel joint for pipeline Download PDFInfo
- Publication number
- CN1062060C CN1062060C CN97126141A CN97126141A CN1062060C CN 1062060 C CN1062060 C CN 1062060C CN 97126141 A CN97126141 A CN 97126141A CN 97126141 A CN97126141 A CN 97126141A CN 1062060 C CN1062060 C CN 1062060C
- Authority
- CN
- China
- Prior art keywords
- stainless steel
- memory
- alloy
- shape
- collar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/52—Ferrous alloys, e.g. steel alloys containing chromium with nickel with cobalt
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
The present invention relates to a shape-memory stainless steel pipe joint which belongs to the technical field alloy. The existing iron-base memory alloy is not ideal in the aspects of yield strength, memory restoration temperature, erosion resistance, processing performance, etc. Thus, the present invention develops stainless steel to which rare-earth elements, nitrogen and carbide forming element such as Nb, Ti, V, Zr, etc. are added, so that the stainless steel has favorable indexes on shape memory performance, corrosion resistance and mechanical property; in addition, a pipe connecting structure is designed by utilizing the stainless steel of the present invention; the pipe connecting structure has the advantages of favorable sealing performance, simple structure and convenient implementation, and can solve the existing practical engineering problems.
Description
The present invention relates to marmem, is shape-memory stainless steel joint for pipeline specifically.
Marmem is subjected to stress can induce parent phase to change to martensitic phase, meanwhile on the part macroscopic view that alloy is done certain deformation has taken place.Take a turn for the worse more than the alternating temperature degree if above-mentioned part is heated to, martensitic phase reverses and becomes parent phase, and correspondingly part has also recovered original shape thereupon.This alloy with shape memory function is called marmem.In the iron-base marmem, the martensite of deironing palldium alloy has the fct structure, and the martensite of iron platinum and ferro-nickel-cobalt-titanium alloy is outside the bct structure, and general iron-base marmem martensite is hcp type 2H structure mostly, is commonly referred to ε martensite.We have found this martensitic 4H, 6H, 8H structure again recently.Parent phase γ is a fcc type 3R structure, also can be described as alloy austenite.The Martensitic transformation of γ → ε, its essence are the changes of atom stacking sequence.Martensitic phase has dissimilar combination faults for parent phase.
Fault low temperature propagation and fault high temperature are degraded and have been constituted martensitic phase transformation and reversed the elementary process that becomes.Though the marmem of non-iron-based such as NiTi and copper base alloy are used already, cost an arm and a leg.The iron-base marmem cost is low, and operating temperature is moderate, and vast potential for future development is arranged.
Patent and feature thereof associated before the present invention are listed below:
CN 1064319A composition (wt%) is characterized as: Mn:15-35%, Si:0.2-6.5%, Al:0.2-8%, Cu:0-0.5, Pr, Pm, Eu, Gd, Td, Dy, Ho, Er, Tm, Yb, Lu, La, Ce, Nd, Sm one or two or more kinds, amount is at 0.008-0.12%, and all the other are iron and inevitable impurity element.
One of JP170457 composition characteristics is: Mn:15-40%, Cr, Co one or both, the amount at 1-20%, Si, Al, Ge, Ga, Nb, V, Ti, Cu, Ni, Mo one or more, addition≤15%, La, Ce, Nd, Sm, Y one or more, addition≤2%.
JP2270938A (USP 5032195) composition characteristics: Mn:15-20%, Si≤3%, Cr≤10%, all the other are iron and inevitable impurity element.
JP216946 composition characteristics: Mn:15-30%, Cr, Ni one or both, addition≤15%, Si, Co one or both ,≤6%.
JP271761 (USP4780154) composition characteristics is: Mn:20-40%; Si:3.5-8%, following element comprises one: Cr≤10% at least, Ni≤10%, Co≤10%, Mo≤2%, C≤1%, Al≤1%, Cu≤1%, all the other are iron and inevitable impurity element.
More than three patent Mn content more than 15%, the superheated susceptivity of alloy is all bigger, restive its heat processing technique.Also be difficult for antirustly in addition, also be difficult to significantly improve its decay resistance even add Cr.What relate to below is Mn at patent below 15% and the document delivered:
The JP2301514 composition characteristics is: Cr:10-17%, Si:3.0-6.0%, following element at least one: Mn:10-25.0%, Ni≤7.0%, Co:2.0-10.0, Ti, Zr, V, Nb, Mo, Cu etc. are a small amount of, all the other be iron and inevitable impurity element.
B.E.Wilde, Corrosion-Nace (1986), Vol.42, the composition of P.678. delivering are Cr:17-19%, Si:0.35-4.79%, Ni:8.83-9.07%, Mn:1.30-1.53%, Cu:0.009-0.20%, N:0.011-0.040%, Mo:0.019-0.21%.
EP 336157A (JP 2030734A, USP 4929289A) composition characteristics is: Cr:0.1-5.0%, Si:2.0-8.0%, Mn:0.1-14.8%, Co:0.1-30%, Ni:0.1-2.0%, Cu:0.1-3%, N:0.01-0.4%, all the other are Fe and inevitable impurity element.
USP 4933027 (EP336175A), its composition range are Cr:5-20%, Si:2.0-8.0%, at least 1 Mn:0.1-14.8% of following element, Ni:0.1-2.0%, Co:0.1-30.0%, Cu:0.1-3.0%, N:0.001-0.4%, all the other are iron and inevitable impurity element.
EP 0506488A1 (claim 4), its composition range is: Cr:16-21%, Si:3.0-7.0%, Ni:11-21%, following element one or more:
Mn:0.1-5.0%, Cu:0.1-1.0%, N:0.001-0.100%, Mo:0.1-3.0%, W:0.1-3.0%, Ti:0.01-1.0%, Zr:0.01-2.0%, Hf:0.01-2.0%, V:0.01-1.0%, Nb:0.01-2.0% and Ta:0.01-2.0%.
As the shape-memory material of practical engineering application, often require yield strength to be higher than 300MPa, reminiscence temperature moderate (As:60-120 ℃), corrosion-resistant and be easy to processing become a useful person.The listed alloy of above-mentioned patent and document is difficult to satisfy simultaneously the requirement of this three aspect.
The purpose of this invention is to provide a kind of shape-memory stainless steel joint for pipeline and chemistry formation thereof, the present invention can overcome the shortcoming of prior art, and this pipe joint structure is simple, practical, economical, easy for installation, uses reliable.
Structure characteristic of the present invention is made up of memory stainless steel or the alloy collar 1, intermediate seal circle 2, ring end sealing compound 3 and connected tube 4.The intermediate seal circle is solid-state high-ductility alloy hoop or rubber ring or other high-ductility material ring that is fixed on memory alloy collar middle inside.The cross section of seal ring can be circle, ellipse, rectangle, trapezoidal or other is special-shaped.Sealing compound then is resin, water glass or plastic inorganic paste thing or the solid that is coated in memory alloy collar inner wall section close end.The sealing compound of the intermediate seal circle of said structure and ring end can use simultaneously, also can use separately.The intermediate seal circle can play axial front and back positioning action at the mounting pipe period of the day from 11 p.m. to 1 a.m, is tightly sealed by the compressing of both sides pipe in the centre during assembling.Sealing compound only is coated near on the inner wall section area of memory alloy ring end.Like this, when guaranteeing sealing, unlikely overflowing in the assembly process to tube interior.Shrink when the memory alloy collar is heated, tighten up pipe and reach purpose of connecting.
For this reason, we propose following novel components and technology, and concrete composition range is as follows:
Cr：12-20％
Si：3-8％
Ni：0.1-8％
Mn：0.1-14.8％
Co：0.1-20％
N：0.05-0.4％
Contain more than one in Ce, La, Sm, Nd, Pm, Eu, Tb, Dy, Pr, Gd, Ho, Er, Tm, Tb, the Lu element, content is 0.01-0.15%.Elements such as Nb, Ti, V, Zr, Ta, Hf, W, Mo, Al, Cu contain more than one, and content is 0.05-2%, and all the other are Fe and unavoidable impurities element.Press the ferro-alloy classification, the invention belongs to stainless steel with shape-memory properties.
The difference of the present invention and patent CN1064319A, JP170457, JP2270938A, JP216946, JP201761 is to contain Mn≤14.8%, has good corrosion resistance to guarantee alloy.One of difference of patent such as the present invention and JP2301514, Wilde, EP336157A, USP4933027, EP0506488A1 and document is to add rare earth elements RE, and main purpose is in order to reduce the dendrite deviation of element, to improve the uniformity of component distributing.Can obviously increase memory effect like this.The difference of the present invention and JP2301514 and the listed alloy of Wilde document is to add 0.05-0.4%N, and purpose is to reduce stacking fault energy, adjustment transformation temperature, also can improve the intensity of material simultaneously.The other difference of the present invention and EP336157A, USP4933027 is to contain carbonitride forming element Nb, Ti, V, Zr, Ta, Hf, W, Mo, can effectively reduce the material superheated susceptivity, and can improve the intensity of material.
To the effect of the alloying element that relates to, do a simple declaration below.
Cr: ferrite former, main effect is to improve the alloy corrosion resistance.It is not remarkable to be lower than 5% corrosion-resistant effect, and general Cr＞12.0% can be used as stainless steel and uses.It presents comparatively complicated rule to the influence of stacking fault energy and transformation temperature.Be lower than at 9% o'clock and reduce stacking fault energy, greater than 9%, Cr obviously increases stacking fault energy and reduces transformation temperature, promotes the generation of fragility σ phase simultaneously.
Ni: can promote austenite to form strongly, the effect that reduces yield strength is arranged, so control nickel content is in the 0.1-8% scope.Because of nickel increases stacking fault energy, so should cooperate reduction stacking fault energy elements such as adding a certain amount of Si, Mn.
Si: can obviously reduce stacking fault energy, so generally should increase Si content.Si is lower than 3% to be reduced a little less than the stacking fault energy effect, and content surpasses 7%, and processibility worsens.
N: be austenite former, can obviously reduce stacking fault energy, have the effect of the Ms of stablizing point.Adding N can partly form carbonitride, has the good action that suppresses heat sensitivity.N can improve alloy yield and pitting corrosion resistant performance simultaneously.Be easy to form the volume nitride but surpass 0.4%, make material embrittlement, so N content is controlled at 0.050-0.40%.
Nb: comprise carboritride forming elements such as Ti, Ta, V, Zr, Hf, W, can the fixed carbon element, prevent that the carbide of chromium from separating out, avoid the dilution and the grain boundary corrosion of crystal boundary chromium.Form fine carbonitride simultaneously and can stop grain growth, alloy superheat when preventing high temperature.Addition is crossed conference and is caused along brilliant fragility, so its content is chosen in 0.05-2%.
Mo: the purpose that adds molybdenum is to improve the ability of anti intercrystalline corrosion and stress corrosion, and it is 0.05% inoperative that Mo is lower than, and exceeds 2% and cause memory performance to worsen, so the Mo addition is controlled at 0.05-2%.
Cu: be austenite former, can improve the alloy anti-corrosion capacity, but improve the austenite stacking fault energy simultaneously, cross and to suppress the formation of ε martensite at most and worsen memory performance.The general copper that adds is controlled in 2%.
Al: crystal grain thinning, reduce stacking fault energy, improve the memory performance of alloy, but Al content surpasses 2%, processibility worsens, so Al content should be controlled within 2%.
The effect and the composition range of each element are described above qualitatively.Concrete composition needs to observe following three criterions with collocation:
1. the parent phase that must guarantee alloy is single austenite phase.For this reason, alloying constituent (wt%) should satisfy following relation:
(Ni+0.5Mn+0.4Co+0.06Cu+0.002N+3)≤[0.67(Cr+Mo)+0.804(Si+Ti+Zr+Hf+V+Nb+Ta)]
2. must guarantee that alloy has the ability of stress corrosion resistant and spot corrosion.For this reason, alloying constituent (wt%) should satisfy relation:
Cr+Si＞18；Cr+3.3Mo+30N＞18
3. must guarantee that alloy has good memory performance and moderate phase transition temperature.For this reason, the alloying element that can reduce stacking fault energy of sufficient amount should be added, following formula need be satisfied:
7Si+Mn+3Co+100N＞50
The performance index that memory stainless steel of the present invention reaches are as follows:
1. than higher shape-memory properties.3% tensile buckling, the reminiscence rate can reach 80%.Through the suitable hot mechanical training, linear answer can reach more than 4%.
2. stress corrosion resistant and spot corrosion can be mated with 304 stainless steels.
3. yield strength σ
0.2〉=300MPa, σ
b〉=650MPa, these performance index 304 stainless levels that are above standard.
(304 stainless steel compositions (wt%): C≤0.08, Cr:18-20, Ni:8-12, Mn:1-2, N≤0.03
Mechanical property: σ
0. 2=247MPa, σ
b=541MPa, δ=50%)
4. alloy has good cold and hot pressure machining characteristics.
5. the transformation temperature of alloy is moderate ,-40 ℃≤Ms≤20 ℃.
Table one is as the embodiment of invention alloy.Wherein meet be designated as " zero " of These parameters, the person of not meeting is marked with " * ".Marmem of the present invention, intensity height, good processability, moderate, the corrosion resistance and good of transformation temperature.The shape-memory pipe box that utilizes shape-memory stainless steel of the present invention to make connects pipe and has adopted special linkage structure.JP04069481A proposes to utilize Fe Mn Si alloy pipe to interlock when joining two pipes together to be used for sealing at pipe box coated inner wall epoxy resin.JP05215277CN proposes except that inwall is coated with sealing compound, and also at the inwall rag, purpose is to strengthen to be fastenedly connected effect.In addition, CN2116140 proposes closed coating pipe connecting structure, is used for high reliability and connects.Above-mentioned patent all relates to when installing and will be coated in sealing compound on the pipe box inwall.Construction is complicated like this.The present invention proposes novel simple, practical pipe joint linkage structure, as shown in Figure 1, Fig. 1: utilize the shape-memory stainless steel to connect the structural approach schematic representation of pipe, wherein: the 1-memory stainless steel or the alloy collar, 2-intermediate seal circle, 3-ring end sealing compound, 4-connected tube.
Embodiment
Connected is φ 15.9 * 1mm304 Austenitic stainless steel pipe, and the collar of connection is a shape-memory stainless steel of the present invention, and (wt%) is as follows for concrete chemical composition: C:0.02, Cr:12.8, Si:5.03, Mo:1.02, Ni:5.10, Mn:14.13, Co:3.0, N:0.10, Ti:0.20, Ce:0.02, La:0.03, all the other are Fe and other unavoidable impurities element.The trained shape-memory stainless steel collar, length 25mm, wall thickness 1mm, internal diameter size are φ 16 ± 0.05mm.The memory stainless steel adopts the 25kg vacuum induction melting, waters into round ingot casting.Remember stainless steel ingot and be heated to 1100 ℃ of insulation 6h, be swaged into the blank of 50 * 20mm rectangular cross-section, be rolled into the steel band of thickness 3mm again.Be cold-rolled to the 1mm thin plate after the pickling, middle through a bright annealing.The back employing high frequency welding of cutting edge method is made the memory stainless steel welded pipe.Carry out the push pipe test with the circular convex cone in 90 ° of angles, prove that plastic property of weld bead is good.The training of welded tube loads adopts plug and two outside plate rolling modes, and the reminiscence amount of empty sleeve pipe reaches 2%.Install when connecting and only adopt resin-sealed dose at memory stainless steel collar two end part.Slowly heated one minute through gas burner then, the memory collar shrinks and tightens up connected 304 Stainless Steel Tubes.This linkage structure is carried out the hydrostatic test, and pressure rises to 50kg/cm
2And kept 30 minutes, no abnormality seen does not take off and does not leak.
The embodiment of table one invention alloy
| The alloy sequence number | Chemical composition wt% * | Remember rotten performance | Anticorrosive | Mechanical property | Processibility | ||||||||||||||||||||||
| Cr | Si | Mo | Ni | Mn | Co | N | Nb | Ti | Ta | V | Zr | Hf | Cu | Al | Ce | La | Sm | Nd | Pr | Eu | Tb | Dy * | |||||
| 1 | 17.0 | 3.2 | 0 | 4 | 4 | 13.5 | 0.1 | 0.10 | 0.05 | ○ | ○ | ○ | ○ | ||||||||||||||
| 2 | 12.0 | 6.0 | 2.0 | 5.3 | 1.0 | 5.0 | 0.1 | 0.2 | 0.03 | ○ | ○ | ○ | ○ | ||||||||||||||
| 3 | 13.0 | 6.1 | 1.0 | 5.0 | 5.9 | 10.1 | 0.2 | 0.10 | 0.02 | ○ | ○ | ○ | ○ | ||||||||||||||
| 4 | 12.8 | 4.8 | 1.2 | 4.9 | 5.0 | 8.6 | 0.15 | 0.2 | 0.03 | ○ | ○ | ○ | ○ | ||||||||||||||
| 5 | 15.8 | 4.3 | - | 4.0 | 7.9 | 8.0 | 0.05 | 0.10 | 0.03 | ○ | ○ | ○ | ○ | ||||||||||||||
| 6 | 15.9 | 4.2 | - | 5.1 | 4.9 | 10 | 0.1 | 0.20 | 0.04 | ○ | ○ | ○ | ○ | ||||||||||||||
| 7 | 15.0 | 5.1 | - | 6.9 | 2.1 | 8.9 | 0.2 | 0.2 | 0.03 | ○ | ○ | ○ | ○ | ||||||||||||||
| 8 | 15.2 | 5.9 | - | 5.8 | 2.2 | 13.3 | 0.2 | 0.2 | 0.5 | 0.03 | ○ | ○ | ○ | ○ | |||||||||||||
| 9 | 15.1 | 5.8 | - | 5.0 | 3.9 | 13.2 | 0.1 | 0.15 | 1.0 | 0.04 | ○ | ○ | ○ | ○ | |||||||||||||
| 10 | 15.0 | 6.1 | - | 4.2 | 4.1 | 15.1 | 0.1 | 0.2 | 0.03 | ○ | ○ | ○ | ○ | ||||||||||||||
| 11 | 15.2 | 6.0 | - | 4.0 | 1.9 | 23.0 | 0.2 | 0.10 | 0.05 | ○ | ○ | ○ | ○ | ||||||||||||||
| 12 | 17.1 | 4.2 | - | 5.1 | 4.2 | 12.1 | 0.1 | 0.10 | 0.02 | ○ | ○ | ○ | ○ | ||||||||||||||
| 13 | 17.0 | 4.0 | - | 4.3 | 3.9 | 14.2 | 0.1 | 0.10 | 0.03 | ○ | ○ | ○ | ○ | ||||||||||||||
| 14 | 15.9 | 5.1 | - | 8.0 | 2.1 | 8.5 | 0.2 | 0.10 | 0.03 | ○ | ○ | ○ | ○ | ||||||||||||||
| 15 | 18.0 | 5.0 | - | 6.1 | 2.0 | 16.0 | 0.2 | 0.05 | 0.04 | ○ | ○ | ○ | ○ | ||||||||||||||
| 16 | 11.8 | 6.1 | 1.4 | 5.0 | 10 | 1.9 | 0.1 | 0.2 | × | × | ○ | ○ | |||||||||||||||
| 17 | 13.0 | 8.6 | 1.0 | 5.1 | 6.0 | 10.1 | 0.2 | 0.05 | 0.05 | × | ○ | × | × | ||||||||||||||
| 18 | 16.9 | 2.0 | - | 3.9 | 4.0 | 13.7 | 0.1 | 0.05 | 0.05 | × | × | × | ○ | ||||||||||||||
| 19 | 16.8 | 4.0 | - | 4.9 | 4.0 | 12.1 | 0.05 | 0.04 | × | × | × | ○ | |||||||||||||||
| 20 | 8 | 4.9 | 1.0 | 5.0 | 4.1 | 7.1 | 0.1 | 0.05 | 0.04 | ○ | × | ○ | ○ | ||||||||||||||
| 21 | 14.9 | 5.9 | - | 4.0 | 1.9 | 10 | 0.2 | 0.05 | 0.04 | × | × | ○ | ○ | ||||||||||||||
| 22 | 15.8 | 3.9 | - | 4.0 | 3.9 | 6.8 | 0.01 | 0.05 | 0.04 | × | × | ○ | ○ | ||||||||||||||
| 23 | 15.0 | 6.0 | - | 5.9 | 1.8 | 13.0 | 0.2 | 0.05 | 0.03 | ○ | × | ○ | ○ | ||||||||||||||
| Remarks | ★ chemical composition remaining part is Fe and all the other Embodiment C≤00.3 that also comprise rare earth elements Pr, Gd, Ho, Er, Tm, Yb, Lu or add mishmetal simultaneously of unavoidable impurities element ※ | ||||||||||||||||||||||||||
Claims (4)
1. marmem pipe linkage structure, it is characterized in that it is to be made of the collar [1], intermediate seal circle [2] and ring end sealing compound [3], between two pipe ends of the collar [1] inboard and connected tube [4] intermediate seal circle [2] is arranged, ring end sealing compound [3] is arranged between the inboard, the collar [1] two ends and connected tube [4] outside; It is as follows that the said collar [1] has chemical composition (wt%) scope: Cr:12-20, Si:3-8, Ni:0.1-8, Mn:0.1-14.8, Co:0.1-20, N:0.05-0.4, C :≤0.03; Among lanthanide series rare-earth elements La, Se, Sm, Nd, Pm, Eu, Tb, Dy, Pr, Gd, Ho, Er, Tm, Yb, the Lu one or more, total amount is at 0.01-0.15;
In Nb, Ti, V, Zr, Ta, Hf, W, Mo, Al, the Cu element one or more, total amount is at 0.05-2;
All the other are Fe and unavoidable impurities element.
2. according to the said marmem pipe linkage structure of claim 1, it is characterized in that said intermediate seal circle [2] can be solid-state high-ductility alloy hoop, rubber ring or other high-ductility material ring, its cross section can be circle, ellipse, rectangle, trapezoidal or other is special-shaped.
3. according to the said marmem pipe linkage structure of claim 1, it is characterized in that said ring end sealing compound [3] can be resin, water glass, plastic inorganic paste thing or solid.
4. according to the said marmem pipe linkage structure of claim 1, it is characterized in that said intermediate seal circle [2] and ring end sealing compound [3] can use simultaneously, also can use separately.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97126141A CN1062060C (en) | 1997-12-31 | 1997-12-31 | Shape-memory stainless steel joint for pipeline |
| DE19882917T DE19882917T1 (en) | 1997-12-31 | 1998-11-19 | Stainless steel with shape memory and pipe adapter from this stainless steel with shape memory |
| PCT/CN1998/000275 WO1999035298A1 (en) | 1997-12-31 | 1998-11-19 | Pipe joint made of shape memory stainless steel |
| AU12228/99A AU752608B2 (en) | 1997-12-31 | 1998-11-19 | Pipe joint made of shape memory stainless steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97126141A CN1062060C (en) | 1997-12-31 | 1997-12-31 | Shape-memory stainless steel joint for pipeline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1192517A CN1192517A (en) | 1998-09-09 |
| CN1062060C true CN1062060C (en) | 2001-02-14 |
Family
ID=5177562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97126141A Expired - Fee Related CN1062060C (en) | 1997-12-31 | 1997-12-31 | Shape-memory stainless steel joint for pipeline |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN1062060C (en) |
| AU (1) | AU752608B2 (en) |
| DE (1) | DE19882917T1 (en) |
| WO (1) | WO1999035298A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080296014A1 (en) * | 2007-05-30 | 2008-12-04 | Baker Hughes Incorporated | Interventionless composite packer |
| US20130160900A1 (en) * | 2011-12-22 | 2013-06-27 | Airbus Engineering Centre India | SHAPE MEMORY STAINLESS STEELS WITH RARE EARTH ELEMENTS Ce AND La |
| CN103056355B (en) * | 2013-01-29 | 2015-01-21 | 大连海事大学 | Manufacturing and application methods for laser cladding powder of iron-base alloy |
| CN106641559B (en) * | 2016-11-23 | 2019-02-26 | 大连海航科技有限公司 | A kind of dissection type marmem pipe joint and its preparation and application |
| CN108004484B (en) * | 2017-12-06 | 2019-09-10 | 新日鑫金属材料（深圳）有限公司 | A kind of preparation method of the stainless steel material with shape memory function |
| CN108359978A (en) * | 2018-04-13 | 2018-08-03 | 贵州大学 | A kind of Fe-based shape memory alloy laser melting coating composite coating powder and its preparation and application |
| CN109869549A (en) * | 2019-04-23 | 2019-06-11 | 中国工程物理研究院总体工程研究所 | A kind of detachable holding tube Hermetical connecting structure |
| 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 |
| CN114774805A (en) * | 2022-05-11 | 2022-07-22 | 沈阳大学 | Memory type duplex stainless steel and preparation thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0336175A1 (en) * | 1988-04-05 | 1989-10-11 | Nkk Corporation | Iron-based shape-memory alloy excellent in shape-memory property, corosion resistance and high-temperature oxidation resistance |
| WO1991000372A1 (en) * | 1989-06-26 | 1991-01-10 | Nisshin Steel Co., Ltd. | Pipe joint made of stainless steel and method of making the same |
| US5174616A (en) * | 1989-07-14 | 1992-12-29 | Nkk Corporation | Pipe coupling using shape memory alloy |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62170457A (en) * | 1986-01-23 | 1987-07-27 | Nippon Steel Corp | Shape memory iron alloy |
| JPH0382741A (en) * | 1989-08-25 | 1991-04-08 | Nisshin Steel Co Ltd | Shape memory staiinless steel excellent in stress corrosion cracking resistance and shape memory method therefor |
| CN1026502C (en) * | 1992-08-20 | 1994-11-09 | 北京科技大学 | Tube joiner of iron base marmem and its production method |
| JP2000501778A (en) * | 1995-07-11 | 2000-02-15 | ウラコ，カリ，マーティ | Nitrogen-containing iron-based shape memory and vibration damping alloy |
-
1997
- 1997-12-31 CN CN97126141A patent/CN1062060C/en not_active Expired - Fee Related
-
1998
- 1998-11-19 AU AU12228/99A patent/AU752608B2/en not_active Ceased
- 1998-11-19 WO PCT/CN1998/000275 patent/WO1999035298A1/en active IP Right Grant
- 1998-11-19 DE DE19882917T patent/DE19882917T1/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0336175A1 (en) * | 1988-04-05 | 1989-10-11 | Nkk Corporation | Iron-based shape-memory alloy excellent in shape-memory property, corosion resistance and high-temperature oxidation resistance |
| WO1991000372A1 (en) * | 1989-06-26 | 1991-01-10 | Nisshin Steel Co., Ltd. | Pipe joint made of stainless steel and method of making the same |
| US5174616A (en) * | 1989-07-14 | 1992-12-29 | Nkk Corporation | Pipe coupling using shape memory alloy |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1192517A (en) | 1998-09-09 |
| DE19882917T1 (en) | 2001-10-04 |
| AU1222899A (en) | 1999-07-26 |
| WO1999035298A1 (en) | 1999-07-15 |
| AU752608B2 (en) | 2002-09-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1605073B1 (en) | Use of an austenitic stainless steel | |
| EP1194606B1 (en) | Heat resistant austenitic stainless steel | |
| EP1605072B1 (en) | Stainless steel for high pressure hydrogen gas, vessel and equipment comprising the steel | |
| EP1777316B1 (en) | Method for the production of super-high-strength line pipe excellent in low temperature toughness | |
| EP0545753B1 (en) | Duplex stainless steel having improved strength and corrosion resistance | |
| EP1445342B1 (en) | Austenitic stainless steel and manufacturing method thereof | |
| EP0386673B1 (en) | High-strength high-Cr steel with excellent toughness and oxidation resistance | |
| EP1304394B1 (en) | Ferritic heat-resistant steel | |
| EP0560375B1 (en) | Low-chromium ferritic heat-resistant steel with improved toughness and creep strength | |
| US4675156A (en) | Structural austenitic stainless steel with superior proof stress and toughness at cryogenic temperatures | |
| EP1683885B1 (en) | High strength stainless steel pipe for line pipe excellent in corrosion resistance and method for production thereof | |
| CN1062060C (en) | Shape-memory stainless steel joint for pipeline | |
| KR20040007764A (en) | Ferritic stainless steel for member of exhaust gas flow passage | |
| CN1257789C (en) | Cored welding wire for lifting welding joint fatigue performance | |
| EP2157202B1 (en) | Ferrite heat resistant steel | |
| KR20060011946A (en) | Welded joint of tempered martensite based heat-resistant steel | |
| KR100985354B1 (en) | Low alloy steel | |
| EP1418245A9 (en) | Long-life heat-resisting low alloy steel welded component and method of manufacturing the same | |
| CN1923433A (en) | High-performance buried arc welding wire and wire rod, and method for manufacturing same | |
| EP2803741B1 (en) | Method of post weld heat treatment of a low alloy steel pipe | |
| US8147748B2 (en) | Creep-resistant steel | |
| JPH07145453A (en) | Ferritic stainless steel for automotive exhaust manifold | |
| JPS59226151A (en) | Austenitic high-alloy stainless steel with superior weldability and hot workability | |
| AU709908B2 (en) | Steel bar for prestressed concrete and method for producing the same | |
| JPH09176766A (en) | High corrosion resistant bellows |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: SHANGHAI TIANHE SHAPE MEMORY MATERIALS CO., LTD. Free format text: FORMER OWNER: TIANJIN UNIVERSITY SHAPE MEMORY MATERIALS ENGINEE RESEARCH CENTER Effective date: 20021011 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20021011 Address after: Songjiang District Jiuting high tech park in Songjiang Yin 201615 green road Shanghai City No. 1 Patentee after: Shanghai Tianhe shape memory material Co., Ltd. Address before: 300072 Tianjin City No. 92 Weijin road Tianjin University Patentee before: Shape Memory Material Engineering Research Center, Tianjin Unvi. |
|
| REG | Reference to a national code |
Ref country code: HK Ref legal event code: GR Ref document number: 1030313 Country of ref document: HK |
|
| 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 |