CN1293219C - Fe-Mn-Si-C memory alloy material and technology and application for producing pipe joint thereof - Google Patents
Fe-Mn-Si-C memory alloy material and technology and application for producing pipe joint thereof Download PDFInfo
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- CN1293219C CN1293219C CNB2004100611514A CN200410061151A CN1293219C CN 1293219 C CN1293219 C CN 1293219C CN B2004100611514 A CNB2004100611514 A CN B2004100611514A CN 200410061151 A CN200410061151 A CN 200410061151A CN 1293219 C CN1293219 C CN 1293219C
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- memorial alloy
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Abstract
The present invention relates to FeMnSiC memory alloy materials with good sealing performance and strong bearing capability, and a pipe joint thereof. The present invention overcomes the defects of low connection strength, poor sealing performance and low bearing capability of a pipe joint made of the existing FeMnSi-based memory alloy materials with low restoring strain and low restoring stress. The materials of the present invention comprise FeMnSiC, and are formed by smelting FeMnSiC memory alloys. The strength, the restoring strain, the restoring stress of the FeMnSiC memory alloy of the present invention are obviously higher than those of common FeMnSi alloys. Meanwhile, the FeMnSiC memory alloy has the advantages of simple processing, low cost, etc. of the FeMnSi alloys. The FeMnSiC memory alloy does not need to process, and more than 5% of restoring strain and more than 350MPa of restoring stress can be obtained.
Description
Technical field:
The present invention relates to the technology and the application of a kind of Fe-Mn-Si-C memory alloy material and making tube stub thereof.
Background technology:
It is low that the Fe-Mn-Si base memorial alloy has a cost, smelts easy to processly, and the plasticity advantages of higher is subject to people's attention, and carries out a large amount of research and development and uses.But but but common Fe-Mn-Si memorial alloy and Fe-Mn-Si-Cr-Ni memorial alloy recovery strain and recovery stress low (being significantly less than Ni-Ti and Cu base memorial alloy) have hindered their practical application.But in order to improve recovery strain, some investigators propose methods such as training managing and hot predeformation, but can obviously improve recovery strain, but complex process does not have practical value, especially is not suitable for tube stub.At present, common Fe-Mn-Si base memorial alloy tube stub all adopts memorial alloy directly to make, but less because of its recovery strain, accurately control predeformation amount, is unfavorable for actual production.Because but common Fe-Mn-Si base memorial alloy recovery strain and recovery stress are lower, cause its tube stub strength of joint lower simultaneously, sealing property is relatively poor, and bearing capacity is lower.
Summary of the invention:
It is lower because of recovery strain and recovery stress ability to the invention solves existing Fe-Mn-Si base memorial alloy material, there is the defective that strength of joint is lower, sealing property is relatively poor, bearing capacity is lower in the tube stub made from this material, the strong Fe-Mn-Si-C memory alloy material of a kind of good seal performance, bearing capacity is provided and makes the technology and the application of tube stub.
Technical scheme of the present invention is as follows: include Fe-Mn-Si in the Fe-Mn-Si-C memory alloy material of the present invention, it is characterized in that: it also includes C, is smelted by the Fe-Mn-Si-C memorial alloy and makes.
But the intensity recovery strain of Fe-Mn-Si-C memorial alloy of the present invention and recovery stress are apparently higher than common Fe-Mn-Si alloy.Kept easy to process, the low cost and other advantages of Fe-Mn-Si alloy smelting simultaneously.The Fe-Mn-Si-C memorial alloy does not need training managing, but can obtain recovery strain, the above recovery stress of 350MPa more than 5%.Therefore, make tube stub with the Fe-Mn-Si-C memorial alloy and have characteristics such as strength of joint height, bearing capacity are big, good seal performance.
Description of drawings:
Fig. 1 is Fe-Mn-Si-C memorial alloy pipe joint structure synoptic diagram and enforcement synoptic diagram.
Fig. 2 is that Fe-Mn-Si-C memorial alloy tube stub connects the foreign material synoptic diagram.
Label declaration: 1 is the memorial alloy tube stub, and 2,3 is connected tube, and 4 is gasket material, and 5 are connected material for another kind.
Embodiment:
The present invention on the basis of Fe-Mn-Si memorial alloy, adds the C atom according to the ultimate principle of Fe-Mn-Si base memorial alloy, and reduces the content of Mn in right amount, forms carbon containing Fe-Mn-Si memorial alloy, i.e. the Fe-Mn-Si-C memorial alloy.
Include Fe-Mn-Si-C in the Fe-Mn-Si-C memory alloy material of the present invention, smelt by the Fe-Mn-Si-C memorial alloy and make.The chemical ingredients of Fe-Mn-Si-C memory alloy material comprises the material of following total amount percentage ratio: Mn17-19%, Si5-6%, C0.25-0.35%, all the other Fe.
Need through 700-800 ℃ of quench treatment before the tube stub reaming by described Fe-Mn-Si-C memory alloy material making.
Fe-Mn-Si-C memorial alloy tube stub of the present invention can be applicable to connect open tube or foreign material, can also be used for the connection of unsuitable welding material (as foreign material).
The technological process that the Fe-Mn-Si-C memorial alloy is made tube stub is as follows:
1) alloy smelting, annealing back is rolling or forge into bar.
2) memorial alloy is heat-treated: Heating temperature 700-800 ℃ is quenched, and insulation 5-35min water-cooled after the time is to be incubated 15 minutes for preferable.
3) adopt rolling or machining process, the processing tube joint, internal diameter is less than the external diameter of connected tube (part).
4) connected tube is inserted in the memorial alloy tube stub, is heated to 300 ℃, memorial alloy produces and shrinks, thereby holds connected tube (part) tightly.Can add gasket material between connected tube (part) and the memorial alloy tube stub.
Claims (4)
1, a kind of Fe-Mn-Si-C memory alloy material includes Fe-Mn-Si, it is characterized in that: it also includes C, is smelted by the Fe-Mn-Si-C memorial alloy and makes; The chemical ingredients of Fe-Mn-Si-C memorial alloy is the material of following total amount percentage ratio: Mn17-19%, Si5-6%, C0.25-0.35%, all the other Fe.
2, the technology of making tube stub by the said Fe-Mn-Si-C memorial alloy of claim 1, it comprises following technological process:
1) alloy smelting, annealing back is rolling or forge into bar;
2) memorial alloy is heat-treated;
3) adopt rolling or machining process, the processing tube joint, internal diameter is less than the external diameter of connected tube or pipe fitting;
4) connected tube is inserted in the memorial alloy tube stub, is heated to 300 ℃, memorial alloy produces and shrinks, and holds connected tube or pipe fitting tightly, adds gasket material between connected tube or pipe fitting and the memorial alloy tube stub;
It is characterized in that: step 2) heat-treat condition be Heating temperature 700-800 ℃ and quench, water-cooled behind the insulation 5-35min.
3, the technology of making tube stub by the said Fe-Mn-Si-C memorial alloy of claim 2, it is characterized in that: described soaking time is 15 minutes.
4, by the application of claim 2 or 3 said Fe-Mn-Si-C memorial alloy tube stubs, it is characterized in that: Fe-Mn-Si-C memorial alloy tube stub is used to connect open tube or foreign material, or is used for the connection of unsuitable welding material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100611514A CN1293219C (en) | 2004-11-18 | 2004-11-18 | Fe-Mn-Si-C memory alloy material and technology and application for producing pipe joint thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100611514A CN1293219C (en) | 2004-11-18 | 2004-11-18 | Fe-Mn-Si-C memory alloy material and technology and application for producing pipe joint thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1609251A CN1609251A (en) | 2005-04-27 |
| CN1293219C true CN1293219C (en) | 2007-01-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100611514A Expired - Fee Related CN1293219C (en) | 2004-11-18 | 2004-11-18 | Fe-Mn-Si-C memory alloy material and technology and application for producing pipe joint thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN1293219C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106065948A (en) * | 2016-08-23 | 2016-11-02 | 中国工程物理研究院电子工程研究所 | A kind of memorial alloy ring seal device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1445372A (en) * | 2002-03-20 | 2003-10-01 | 独立行政法人物质材料研究机构 | Processing heat treatment method of Fe-Mn-Si series shape memory alloy which adding NbC |
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2004
- 2004-11-18 CN CNB2004100611514A patent/CN1293219C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1445372A (en) * | 2002-03-20 | 2003-10-01 | 独立行政法人物质材料研究机构 | Processing heat treatment method of Fe-Mn-Si series shape memory alloy which adding NbC |
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| Publication number | Publication date |
|---|---|
| CN1609251A (en) | 2005-04-27 |
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Granted publication date: 20070103 Termination date: 20091218 |