CN203124987U - Dissimilar metal welding structure of titanium alloy flange and stainless steel pipeline - Google Patents
Dissimilar metal welding structure of titanium alloy flange and stainless steel pipeline Download PDFInfo
- Publication number
- CN203124987U CN203124987U CN 201220587637 CN201220587637U CN203124987U CN 203124987 U CN203124987 U CN 203124987U CN 201220587637 CN201220587637 CN 201220587637 CN 201220587637 U CN201220587637 U CN 201220587637U CN 203124987 U CN203124987 U CN 203124987U
- Authority
- CN
- China
- Prior art keywords
- titanium alloy
- stainless steel
- steel pipeline
- alloy flange
- dissimilar metal
- 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
Landscapes
- Arc Welding In General (AREA)
Abstract
The utility model provides a dissimilar metal welding structure of a titanium alloy flange and a stainless steel pipeline. The inner side of the stainless steel pipeline is of a cone structure, and the cone angle is 30-50 degrees. The outer side of the titanium alloy flange is of a cone structure, and the cone angle of the titanium alloy flange is the same as that of the stainless steel pipeline. The cone structure on the outer side of the titanium alloy flange is embedded into the cone structure on the inner side of the stainless steel pipeline, and the dissimilar metal welding structure is formed by welding the titanium alloy flange and the stainless steel pipeline. By adopting the dissimilar metal welding structure, the thermal expansion coefficient is larger after the stainless steel pipeline is brazed, the amount of contraction generated in the process of cooling from high temperature to normal temperature is larger, and therefore internal stress for the stainless steel pipeline to hoop the titanium alloy flange is generated and reliability of a pipeline structure is improved. The dissimilar metal welding structure has good engineering application value.
Description
Technical field
The utility model relates to dissimilar metal pipeline syndeton, is particularly related to a kind of titanium alloy flange and stainless steel pipeline welding of dissimilar metal access node structure.
Background technology
The different metal materials welding is the important difficult problem in the welding technology field, because dissimilar metal causes its welding process more more complex than metal of the same race in the significant difference of aspects such as physical property, chemical property, quality of weld joint also is difficult to guarantee.
Titanium alloy is as a kind of new metallic material, have specific strength height (strength/density), calorific intensity height, corrosion stability is good, cryogenic property is good characteristics, in the preferred material of field Chang Zuowei gas cylinders such as Aero-Space, ocean, oil, low temperature cylinder, anti-corrosion pipeline.
The titanium alloy tank that uses at aerospace field is to satisfy high storage pressure, the material of selecting for use is the TC4 titanium alloy, and the pipeline structure that is attached thereto is the 1Cr18Ni9Ti stainless steel alloy, as shown in Figure 1, thus the adapter parts of the pipeline structure of tank have titanium alloy and stainless steel dissimilar metal solder problem.The fusing point of titanium is 1677 ℃, and linear expansion coefficient is 8.2 * 10
-6K
-1, thermal conductivity is 13.8W/(mK).Stainless matrix is iron, and the fusing point of iron is 1537 ℃, and linear expansion coefficient is 11.76 * 10
-6K
-1, thermal conductivity is 66.7W/(mK).The thermal conductivity of titanium and titanium alloy has only 1/5 of steel, and elastic modelling quantity has only 1/2 of steel, thereby is easy to generate weld defects such as cracking, distortion during the direct melting welding of two kinds of materials.During the direct melting welding of titanium alloy and stainless steel dissimilar metal, because the solubility of iron in titanium is extremely low, the solubility of Fe in α-Ti has only about 0.05%-0.1% under the normal temperature, when alloy contains Te amount and surpasses 0.1%, will form the TiFe intermetallic compound, TiFe is mutually hard and crisp, at high temperature also can form TiFe
2Intermetallic compound.Simultaneously, Ti also forms more complicated intermetallic compound and carbide with Ni, Cr, C, makes the serious embrittlement of weld seam, even cracks.Even in solid-state welding down, because phase counterdiffusion and the migration of mother metal constituent element also can form the thin layer of an intermetallic compound and carbide, thereby cause the joint brittle failure near the composition surface.Therefore, the metallurgical incompatibility of titanium alloy and two kinds of materials of stainless steel causes its directly melting welding.
Summary of the invention
At the problem that above-mentioned prior art exists, the utility model is in a kind of titanium alloy flange and stainless steel pipeline welding of dissimilar metal access node structure are provided.
Realize the technical scheme of the utility model purpose: a kind of titanium alloy flange and stainless steel pipeline welding of dissimilar metal access node structure, the inboard of described stainless steel pipeline is cone structure, cone angle is between 30 °-50 °; The outside of described titanium alloy flange is cone structure, and cone angle is identical with the cone angle of stainless steel pipeline; The cone structure in the titanium alloy flange outside embeds the cone structure of stainless steel pipeline inboard, and both match and are welded.
Aforesaid a kind of titanium alloy flange and stainless steel pipeline welding of dissimilar metal access node structure, its described titanium alloy flange welds mutually with tank casing or titanium alloy pressure vessel.
Effect of the present utility model is:
The utility model is at titanium alloy and the metallurgical incompatible directly melting welding of stainless steel, titanium alloy and the stainless steel hot coefficient of expansion are inconsistent, problem easy to crack after the direct melting welding, design the pipeline structure that a kind of new titanium alloy flange and stainless steel pipeline welding of dissimilar metal connect, stainless steel usually interior, titanium alloy Welding Structure outside change into stainless steel outside, titanium alloy is at interior welded pipe line structure.
For making titanium alloy flange and stainless steel pipeline that bigger more stable soldering faying face be arranged, titanium alloy flange and stainless steel pipeline junction are designed to cone structure, cone angle is 30 °-50 °.The stainless steel pipeline is bigger because of thermal coefficient of expansion after the soldering, and is bigger to the amount of contraction of the temperature-fall period generation of normal temperature by high temperature, causes producing the internal stress that the stainless steel pipeline is waled the titanium alloy flange, increases the reliability of pipeline structure.
Adopt Welding Structure described in the utility model, titanium alloy flange and stainless steel pipeline can form the metallurgical binding layer of stable performance, use the ratio of brazing area of the detection method detection solder joint of ultrasonic wave C scanning, ratio of brazing area 〉=95%, tensile strength 〉=200MPa has the excellent engineering using value.
Description of drawings
Fig. 1 for titanium alloy flange commonly used outside, the stainless steel pipeline is at interior pipeline structure schematic diagram;
Fig. 2 be stainless steel pipeline described in the utility model outside, the titanium alloy flange is at the pipeline structure schematic diagram of interior soldering welding;
Among the figure: 1 is the stainless steel pipeline, and 2 is the titanium alloy flange, and 3 is the titanium alloy pressure vessel.
The specific embodiment
Below in conjunction with the drawings and specific embodiments a kind of titanium alloy flange described in the utility model and stainless steel pipeline welding of dissimilar metal access node structure are further described.
A kind of titanium alloy flange described in the utility model and stainless steel pipeline welding of dissimilar metal access node structure, as shown in Figure 2, the inboard of stainless steel pipeline 1 is cone structure, cone angle is (for example: 30 °, 40 ° or 50 °) between 30 °-50 °; The outside of titanium alloy flange 2 is cone structure, and cone angle is identical with the cone angle of stainless steel pipeline 1; The cone structure in titanium alloy flange 2 outsides embeds the cone structure of stainless steel pipeline 1 inboard, and both match and are welded.Titanium alloy flange 2 welds mutually with tank casing or titanium alloy pressure vessel 3.The above-mentioned TC4 titanium alloy material that is.
The concrete welding process of above-mentioned titanium alloy flange and stainless steel pipeline welding of dissimilar metal access node structure is as follows:
(a) be processed to form cone structure in the inboard, position to be welded of stainless steel pipeline 1, cone angle is (for example: 30 °, 40 ° or 50 °) between 30 °-50 °; The outside, position to be welded at titanium alloy flange 2 also is processed to form cone structure, and the cone angle size is identical with the cone angle of stainless steel pipeline 1, guarantees that the cone structure in titanium alloy flange 2 outsides matches with the cone structure of above-mentioned stainless steel pipeline 1 inboard;
(b) handle at the cone structure plating nickel on surface at the position to be welded of stainless steel pipeline 1, thickness of coating be 10-50 μ m(for example: 10 μ m, 30 μ m or 50 μ m);
(c) to the cone structure surface at the position to be welded of titanium alloy flange 2 remove greasy dirt, surface acid-washing is handled; Cone structure surface at the position to be welded of titanium alloy flange 2 coats the thick paper tinsel shape AgCu solder (for example 0.01mm, 0.3mm or 0.5mm) of one deck 0.01-0.5mm;
(d) will be assembled together the pipeline structure that the welding method of employing vacuum brazing is welded as a whole through the stainless steel pipeline 1 of Nickel Plating Treatment with the titanium alloy flange 2 that coats the AgCu solder.Vacuum brazing method is specially: vacuum pressure is less than or equal to 5 * 10
-3Pa, brazing temperature is 820～870 ℃, temperature retention time 2～10min(for example: 870 ℃ of insulation 2min or 820 ℃ insulation 10min or 850 ℃ of insulation 6min).
The pipeline structure of dissimilar metal welding described in the utility model comprises titanium alloy flange and stainless steel pipeline, and the stainless steel pipeline is designed to cone structure, and the welding position designs in the outside; The titanium alloy flange design becomes corresponding cone structure, and the welding position designs in the inboard.When vacuum brazing is welded, utilize stainless steel and titanium alloy vacuum brazing technology, make titanium alloy and stainless steel dissimilar metal form good Welding Metallurgy binder course; Utilize the stainless thermal coefficient of expansion material build-in attribute bigger than titanium alloy, make the stainless steel tube circuit unit in the pipeline structure produce the internal stress wale the titanium alloy flange, increase the adhesion of structure, form high-quality, highly reliable welding point.The utility model can be applicable to the welding of the titanium alloy-stainless steel dissimilar metal weldedstructure of similar structures.
Claims (2)
1. a titanium alloy flange and stainless steel pipeline welding of dissimilar metal access node structure, it is characterized in that: the inboard of described stainless steel pipeline (1) is cone structure, cone angle is between 30 °-50 °; The outside of described titanium alloy flange (2) is cone structure, and cone angle is identical with the cone angle of stainless steel pipeline (1); The cone structure in titanium alloy flange (2) outside embeds the inboard cone structure of stainless steel pipeline (1), and both match and are welded.
2. a kind of titanium alloy flange according to claim 1 and stainless steel pipeline welding of dissimilar metal access node structure, it is characterized in that: described titanium alloy flange (2) welds mutually with tank casing or titanium alloy pressure vessel (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220587637 CN203124987U (en) | 2012-11-09 | 2012-11-09 | Dissimilar metal welding structure of titanium alloy flange and stainless steel pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220587637 CN203124987U (en) | 2012-11-09 | 2012-11-09 | Dissimilar metal welding structure of titanium alloy flange and stainless steel pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203124987U true CN203124987U (en) | 2013-08-14 |
Family
ID=48933008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220587637 Expired - Fee Related CN203124987U (en) | 2012-11-09 | 2012-11-09 | Dissimilar metal welding structure of titanium alloy flange and stainless steel pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203124987U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102950390A (en) * | 2012-11-09 | 2013-03-06 | 航天材料及工艺研究所 | Dissimilar metal welding structure and method of titanium alloy flange and stainless steel pipeline |
| CN111545949A (en) * | 2020-05-22 | 2020-08-18 | 浙江诺维雅工贸有限公司 | Solder and heat-insulating container welded by same |
-
2012
- 2012-11-09 CN CN 201220587637 patent/CN203124987U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102950390A (en) * | 2012-11-09 | 2013-03-06 | 航天材料及工艺研究所 | Dissimilar metal welding structure and method of titanium alloy flange and stainless steel pipeline |
| CN102950390B (en) * | 2012-11-09 | 2016-01-27 | 航天材料及工艺研究所 | A kind of titanium alloy flange and stainless steel pipeline different-metal material welding structure and method |
| CN111545949A (en) * | 2020-05-22 | 2020-08-18 | 浙江诺维雅工贸有限公司 | Solder and heat-insulating container welded by same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101284336B (en) | Argon-arc welding-braze welding composite welding method for connecting the titanium alloy and steel | |
| CN101362253B (en) | TiNi shape memory alloy and stainless steel instant liquid-phase diffusion welding connection method | |
| CN102699484B (en) | Method for welding titanium composites for titanium-steel composite plates | |
| CN102672328B (en) | Method for welding titanium and steel by applying high-entropy effect and welding material | |
| CN102950390B (en) | A kind of titanium alloy flange and stainless steel pipeline different-metal material welding structure and method | |
| CN104197104B (en) | A kind of composite bimetal pipe and manufacturing process thereof | |
| Serindağ et al. | Characterizations of microstructure and properties of dissimilar AISI 316L/9Ni low-alloy cryogenic steel joints fabricated by gas tungsten arc welding | |
| CN103350124A (en) | Manufacturing method of straight-seam bi-metal composite welded pipe used for delivering petroleum and natural gas | |
| CN203517040U (en) | Bimetallic composite welded pipe with straight seam | |
| CN203124987U (en) | Dissimilar metal welding structure of titanium alloy flange and stainless steel pipeline | |
| CN105921545A (en) | Manufacturing method of pure titanium or titanium alloy/carbon steel laminar composite welded pipe | |
| CN104227338A (en) | Preparation method for aluminum-stainless steel composite pipe for thermal control on spacecraft | |
| CN107984062A (en) | A kind of welding method of SUS316 austenitic stainless steels and Weldox700E low-alloy quenched and tempered steel different steel welds | |
| CN105251971B (en) | A kind of method hot rolling plate base process interlayer vacuum coating method | |
| JP4915251B2 (en) | Clad welded structure of low alloy steel base metal | |
| CN113458549B (en) | Preparation method of composite pipe based on spraying technology | |
| CN101284329A (en) | Filler wire argon tungsten arc process of super nickel/NiCr stacking compound material | |
| CN203322515U (en) | Straight-slit compound steel pipe for conveying acid media | |
| CN203663822U (en) | Acrylate esterification reactor with titaniumtim and stainless steel combined structure | |
| CN102672331B (en) | Method for preparing TA2/Q235 composite plate by electric resistance welding and welding material | |
| CN103266240A (en) | Nickel-based alloy for graphite and stainless steel soldering and preparation method thereof | |
| CN105855669A (en) | Butt-welded joint method of double surface coated Incoloy 825 laminated composite plate | |
| KR20110130930A (en) | Method for diffusion bonding of nickel-based alloys | |
| CN206474819U (en) | A kind of copper aluminium face face vadose solution formula connecting tube | |
| CN101653863A (en) | Method for welding dissimilar metal with beryllium aluminum interlayer structures |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130814 Termination date: 20181109 |