CN104259645A - Welding process for titanium tube and tube plate - Google Patents
Welding process for titanium tube and tube plate Download PDFInfo
- Publication number
- CN104259645A CN104259645A CN201410361935.2A CN201410361935A CN104259645A CN 104259645 A CN104259645 A CN 104259645A CN 201410361935 A CN201410361935 A CN 201410361935A CN 104259645 A CN104259645 A CN 104259645A
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- China
- Prior art keywords
- tube
- titanium
- pipe
- welding
- titanium pipe
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- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/06—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating by means of high energy impulses, e.g. magnetic energy
- B23K20/08—Explosive welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/24—Preliminary treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/14—Heat exchangers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/18—Dissimilar materials
- B23K2103/24—Ferrous alloys and titanium or alloys thereof
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Arc Welding In General (AREA)
Abstract
The invention relates to a welding process for a titanium tube and a tube plate. The welding process comprises the following steps: selecting the titanium tube and the tube plate which meet requirements, and marking a pre-assembling part of an upper titanium tube of the titanium tube and the tube plate, wherein the marked length on the titanium tube is the same with the thickness of the tube plate; selecting a pre-compound composite layer tube made of a material which is the same with or different from a material of a tube plate, wherein the length of the composite layer tube is the same with the marked length of the titanium tube; turning from the marked part of the titanium tube to one third part of the wall thickness of the titanium tube, forming a 450-degree chamfer at one end of the marked part, polishing a turned part to reach the roughness of 1.6[mu]m; turning the compound layer and polishing to reach a roughness lower than 1.6[mu]m, and keeping that the inner diameter of the composite layer tube is 0.8 to 1.0mm larger than the external diameter of the titanium tube; selecting a hard solid wooden rod or a rubber rod, of which the length is 10mm longer than the marked length of the titanium tube, using a special tool to press the wooden rod or the rubber rod to the marked part of the titanium tube; using an explosive welding method to weld the composite layer tube onto the titanium tube to form a titanium composited tube; turning the titanium composited tube to reach a required dimension; and assembling the titanium composited tube into a tube plate hole and using a welding process to accomplish welding to the titanium tube and a carbon steel or stainless steel tube plate. The invention provides the welding process for the heat exchange titanium tube and the tube plate, which is simple and practicable and is realized by adopting an explosive welding technology.
Description
Technical field
The present invention relates to explosion welding technique and manufacturing field of equipment, particularly relate to a kind of welding procedure of the titanium tube hydroforming utilizing explosion welding technique to realize.
Background technology
Heat exchanger in the national economic development, particularly oil, chemical industry, field of medicaments application widely.And in the production of heat exchanger, the connected mode between exchanger tubes and tubesheets and quality of connection determine quality good or not and the service life of heat exchanger, it is also vital critical process in manufacture of heat exchangers.Production practices prove, mostly the inefficacy of heat exchanger or scrap is to cause by the connection of exchanger tubes and tubesheets is disrumpent feelings.Therefore, the Joining Technology of heat exchanger tube and tube sheet and quality control just become most important key point in heat exchanger quality certification system.At present, the connected mode for carbon steel, stainless steel heat exchange tube and carbon steel, Stainless Steel Tubular Plates mainly contains: welding, expanded joint method and expanding plus welding method etc.And in existing traditional connection method, the welding of tube hydroforming or expanding plus welding method are the most ripe, most widely used general, sealing is best, reliability the is the highest methods of attachment of current technique.
The method that can adopt welding or expanding plus welding is connected with tube sheet for homogeneity or the heat exchanger tube that mixes, but to the connection as titanium pipe and carbon steel or Stainless Steel Tubular Plates of inconsistent heat exchanger tube and tube sheet, the welding of existing maturation or expanding plus welding technique just cannot be adopted to complete.For a technique difficult problem, relevant works technical staff has researched and developed the connection of explosive welding exchanger tubes and tubesheets, achieves the theoretical result of expection.Document " high pressure heat exchanger titanium tube-plate explosive welding simulation and the experiment " literary composition (pressure vessel 2011.11) delivered, has carried out computer simulation to explosive welding tube hydroforming, and has successfully made titanium pipe and the ordinary carbon steel Tube-sheet Welding of wall thickness 1-2mm.Only having carried out computer mould to titanium tube of thin wall and tube sheet fits experiment above, the explosive welding of the 2mm of titanium pipe and tube sheet be greater than to(for) wall thickness does not provide any theory and experimental data, this and titanium thickness of pipe wall increase, and corresponding explosive charge increases, and the distortion of uncontrollable pipe bridge has some relations.The method that explosive welding theory and practice monograph (Principle and application 2007.4 of an explosive welding and explosive composite material) book (P357-359) describes external tube hydroforming explosive welding and the newest fruits that this explosion technique is studied, illustrate that difference is blamed especially and hold the achievement in research of metal as titanium pipe and the direct explosive welding of Stainless Steel Tubular Plates, producing and application for expanding heat exchanger, specifying new thinking of development.
Although utilize explosion welding technique can realize titanium pipe and carbon steel, the welding of Stainless Steel Tubular Plates, but still there is a lot of technical barrier and the low inferior problem of production efficiency.One, when explosive welding tube wall is greater than the titanium pipe of 2mm, the distortion of pipe bridge is difficult to control, on-the-spot installation very complicated; Its two, the layout of explosive is more difficult, and loading rate is low, the lifting, fixing also more complicated of tube hydroforming after Explosion composite.Adopt process of the present invention, not only cost of transportation can be reduced, even do not need proprietary explosive welding base just can carry out explosive welding operation, and described invented technology is simple, easy and simple to handle, the explosive processing process completing titanium pipe and carbon steel, Stainless Steel Tubular Plates in inside plants can be realized, greatly can save production cost, increase production efficiency.
summary of the invention
Object of the present invention is that overcoming above-mentioned deficiency of the prior art provides a kind of simple explosion welding technique that utilizes to realize the welding procedure of heat exchange titanium tube hydroforming, this technique simplifies production technology, enhance productivity, ensure welding quality and the sealing of tube hydroforming, improve the military service cycle of heat exchanger.
Technical scheme of the present invention is achieved in that a kind of welding procedure of titanium tube hydroforming, and this technique comprises the following steps:
Step 1: by design of heat exchanger drawing requirement, selects satisfactory titanium pipe and tube sheet, and on titanium pipe, titanium tube hydroforming pre-assembled position makes a mark, and on titanium pipe, mark lengths is identical with tube plate thickness;
Step 2: the clad pipe selecting pre-compound, its material be same as or class in tube sheet material, length is identical with titanium pipe mark lengths;
Step 3: turning titanium pipe mark position is to 1/3 place of titanium thickness of pipe wall, and the one end at mark position has 45
0chamfering, polishing turning position is to roughness 1.6um;
Step 4: turning clad pipe is also polished to below roughness 1.6um, keeps clad pipe internal diameter to be greater than titanium pipe external diameter 0.8-1.0mm;
Step 5: select the solid wooden stick of hard or glue rod, ensure that wooden stick or glue rod realize tight fit with titanium bore, length is greater than titanium pipe mark lengths 10mm, uses specific purpose tool press-in wooden stick or glue rod to titanium pipe mark position, in case titanium pipe distortion during explosive welding;
Step 6: use explosion welding method that clad pipe is welded on titanium pipe and form composite ti pipe;
Step 7: turning composite ti pipe is to given size;
Step 8: composite ti pipe is assembled in tubesheet holes, uses welding procedure to complete the welding of titanium pipe and carbon steel, Stainless Steel Tubular Plates.
The good effect that technical scheme of the present invention produces is as follows:
The present invention utilizes explosion welding technique and traditional tube to tube sheet welding technique, realize the strong combination between dissimilar metal titanium pipe and carbon steel, Stainless Steel Tubular Plates, overcome titanium pipe and directly can not weld with carbon steel, Stainless Steel Tubular Plates or directly adopt many production and the technical barrier of explosion welding technique explosive forming.The method that first the present invention adopts confined explosion to weld, make to be same as or class is welded on titanium pipe in the material of tube sheet, then adopt the welding procedure of traditional tube hydroforming, the homogenous metal that titanium pipe and carbon steel, these two kinds of inhomogeneous metal solder of Stainless Steel Tubular Plates are converted to technical maturity is welded.The present invention breaches the direct explosion time of tube hydroforming in addition, and heat exchanger tube wall thickness can not be greater than the technical barrier of 2mm.Compare with the direct explosion welding technique of tube sheet with existing titanium pipe, its remarkable advantage is: the explosion welding technique of clad pipe is ripe, the welding equipment of tube hydroforming and technique advanced person, welding cost is low, efficiency is high, easy and simple to handle, welding joint mechanical property is high, good airproof performance.Effective combination of two technology breaches a conventional lower unweldable tube hydroforming sealing difficult problem, improves effective military service cycle of heat exchanger.
Accompanying drawing explanation
Fig. 1 is the pre-compound position of titanium pipe of the present invention schematic diagram.
Fig. 2 is titanium tube to tube sheet welding schematic diagram of the present invention.
Wherein mark representative in figure: 1, titanium pipe; 2, tube sheet; 3, weld seam; 4, clad pipe.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further elaborated.
Embodiment one
A welding procedure for titanium tube hydroforming, as shown in Figure 1, 2, the step of this technique is as follows:
The welded seal of step 1:TA2 titanium pipe and 16Mn II tube sheet forging, titanium pipe external diameter 22mm, internal diameter 16mm, wall thickness 3mm; Tube sheet forging aperture 22.5mm, pipe bridge 22mm, thickness 50mm, mark in titanium pipe one end, mark lengths 50mm;
Step 2: the clad pipe selecting pre-compound, its material be same as or class in tube sheet material, clad pipe selects Q345R, internal diameter 23mm, external diameter 28mm, length 50mm;
Step 3: turning titanium pipe mark position is to diameter 21mm, and one end leaves 45
0chamfering, polishing turning position is to below roughness 1.6um;
Step: 4: be polished to below roughness 1.6um to given size with Q235R plate turnery processing clad pipe;
Step 5: the solid wooden stick of hard, wooden stick external diameter 16.15mm, length 60mm, use specific purpose tool press-in wooden stick to titanium pipe mark position, in case titanium pipe distortion during explosive welding;
Step 6: utilize explosion welding technique that clad pipe explosive welding is formed composite ti pipe to titanium pipe, inspection peptide multiple tube bond quality, and make mark;
Step 7: to tube sheet pre-welding pore counterbore chamfering, counter bore hole diameters 28mm, degree of depth 2.5mm, chamfering 30
0;
Step 8: according to the assay of composite ti pipe, processes composite ti pipe length to 2.5mm, a chamfer 30
0;
Step 9: utilize the wooden stick in specific purpose tool pull-out titanium pipe;
Step 10: titanium pipe is loaded in tubesheet holes, makes its reserved titanium cladding enter in tube sheet counterbore, welding titanium pipe cladding and tube sheet, completes welding of titanium pipe and carbon steel tube plate.
Embodiment two
A welding procedure for titanium tube hydroforming, as shown in Figure 1, 2, the step of this technique is as follows:
The welded seal of step 1:TA1 titanium pipe and 0,0Cr,19N,i10 II tube sheet forging, titanium pipe external diameter 19mm, internal diameter 14mm, wall thickness 2.5mm, tube sheet forging aperture 19.5mm, pipe bridge 15mmm, thickness 35mm, mark in titanium pipe one end, mark lengths 35mm, glue rod press-in titanium pipe mark position;
Step 2: clad pipe selects 00Cr19Ni10, internal diameter 20mm, external diameter 26mm, length 35mm;
Step 3: turning mark position is to diameter 18.mm, and one end leaves 45
0chamfering, polishing turning position is to below roughness 1.6um;
Step 4: be polished to below roughness 1.6um to given size with 00Cr19Ni10 corrosion resistant plate turnery processing clad pipe;
Step 5: select hard solid rubber rod, glue rod outside diameter 19.10mm, length 45mm, uses specific purpose tool press-in glue rod to titanium pipe mark position, in case titanium pipe distortion during explosive welding;
Step 6: utilize explosion welding technique that clad pipe explosive welding is formed composite ti pipe to titanium pipe, inspection peptide multiple tube bond quality, and make mark;
Step 7: to tube sheet pre-welding pore counterbore chamfering, counter bore hole diameters 26mm, degree of depth 2.5mm, chamfering 30
0;
Step 8: according to the assay of composite ti pipe, processes composite ti pipe length to 2.5mm, a chamfer 30
0;
Step 9: the glue utilizing specific purpose tool to pull out in titanium pipe is excellent;
Step 10: titanium pipe is loaded in tubesheet holes, makes its reserved titanium cladding enter in tube sheet counterbore, welding composite ti pipe cladding and tube sheet, completes welding of titanium pipe and Stainless Steel Tubular Plates.
Claims (1)
1. a welding procedure for titanium tube hydroforming, is characterized in that: this technique comprises the following steps:
Step 1: by design of heat exchanger drawing requirement, selects satisfactory titanium pipe and tube sheet, and on titanium pipe, titanium tube hydroforming pre-assembled position makes a mark, and on titanium pipe, mark lengths is identical with tube plate thickness;
Step 2: the multiple tube selecting pre-compound, its material be same as or class in tube sheet material, length is identical with titanium pipe mark lengths;
Step 3: turning titanium pipe mark position is to 1/3 place of titanium thickness of pipe wall, and the one end at mark position has 45
0chamfering, polishing turning position is to roughness 1.6um;
Step 4: turning multiple tube is also polished to below roughness 1.6um, keeps multiple tube internal diameter to be greater than titanium pipe external diameter 0.8-1.0mm;
Step 5: select the solid wooden stick of hard or glue rod, ensure that wooden stick or glue rod realize tight fit with titanium bore, length is greater than titanium pipe mark lengths 10mm, uses specific purpose tool press-in wooden stick or glue rod to titanium pipe mark position, in case titanium pipe distortion during explosive welding;
Step 6: use explosion welding method that composite tube welding is formed composite ti pipe to titanium pipe;
Step 7: turning composite ti pipe is to given size;
Step 8: composite ti pipe is assembled in tubesheet holes, uses welding procedure to complete the welding of titanium pipe and carbon steel, Stainless Steel Tubular Plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410361935.2A CN104259645B (en) | 2014-07-28 | 2014-07-28 | A kind of welding procedure of titanium tube and tube plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410361935.2A CN104259645B (en) | 2014-07-28 | 2014-07-28 | A kind of welding procedure of titanium tube and tube plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104259645A true CN104259645A (en) | 2015-01-07 |
| CN104259645B CN104259645B (en) | 2016-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410361935.2A Expired - Fee Related CN104259645B (en) | 2014-07-28 | 2014-07-28 | A kind of welding procedure of titanium tube and tube plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104259645B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104801903A (en) * | 2015-04-21 | 2015-07-29 | 常熟锐钛金属制品有限公司 | Device for welding titanium tube and stainless steel tube plate |
| CN105108297A (en) * | 2015-09-01 | 2015-12-02 | 大连船舶重工集团爆炸加工研究所有限公司 | Overall composite flange and manufacturing method thereof |
| CN107160026A (en) * | 2017-06-21 | 2017-09-15 | 茂名重力石化装备股份公司 | A kind of butt welding tube sheet of layer containing Explosion composite and the heat exchanger with it |
| CN110883441A (en) * | 2019-11-25 | 2020-03-17 | 南京扬子检修安装有限责任公司 | Heat exchanger tube and tube plate welding process |
Citations (6)
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|---|---|---|---|---|
| GB1294522A (en) * | 1969-01-31 | 1972-11-01 | Du Pont | Multilayered metal composites |
| JPH02104482A (en) * | 1988-10-12 | 1990-04-17 | Hitachi Ltd | Pipe joint for joining high corrosion resistant stainless steel-titanium and manufacture thereof |
| JPH0716604A (en) * | 1993-07-07 | 1995-01-20 | Yamaki Kogyo Kk | Titanium-clad steel sheet and its manufacture |
| CN102699484A (en) * | 2012-04-28 | 2012-10-03 | 洛阳双瑞金属复合材料有限公司 | Method for welding titanium composites for titanium-steel composite plates |
| CN202582331U (en) * | 2012-04-18 | 2012-12-05 | 南京斯迈柯特种金属装备股份有限公司 | Corrosion-resistant titanium U-shaped pipe heat exchanger pipe plate structure |
| CN103411452A (en) * | 2013-07-25 | 2013-11-27 | 黎超 | Improved structure of titanium coaxial double-pipe heat exchanger |
-
2014
- 2014-07-28 CN CN201410361935.2A patent/CN104259645B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1294522A (en) * | 1969-01-31 | 1972-11-01 | Du Pont | Multilayered metal composites |
| JPH02104482A (en) * | 1988-10-12 | 1990-04-17 | Hitachi Ltd | Pipe joint for joining high corrosion resistant stainless steel-titanium and manufacture thereof |
| JPH0716604A (en) * | 1993-07-07 | 1995-01-20 | Yamaki Kogyo Kk | Titanium-clad steel sheet and its manufacture |
| CN202582331U (en) * | 2012-04-18 | 2012-12-05 | 南京斯迈柯特种金属装备股份有限公司 | Corrosion-resistant titanium U-shaped pipe heat exchanger pipe plate structure |
| CN102699484A (en) * | 2012-04-28 | 2012-10-03 | 洛阳双瑞金属复合材料有限公司 | Method for welding titanium composites for titanium-steel composite plates |
| CN103411452A (en) * | 2013-07-25 | 2013-11-27 | 黎超 | Improved structure of titanium coaxial double-pipe heat exchanger |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104801903A (en) * | 2015-04-21 | 2015-07-29 | 常熟锐钛金属制品有限公司 | Device for welding titanium tube and stainless steel tube plate |
| CN105108297A (en) * | 2015-09-01 | 2015-12-02 | 大连船舶重工集团爆炸加工研究所有限公司 | Overall composite flange and manufacturing method thereof |
| CN107160026A (en) * | 2017-06-21 | 2017-09-15 | 茂名重力石化装备股份公司 | A kind of butt welding tube sheet of layer containing Explosion composite and the heat exchanger with it |
| CN110883441A (en) * | 2019-11-25 | 2020-03-17 | 南京扬子检修安装有限责任公司 | Heat exchanger tube and tube plate welding process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104259645B (en) | 2016-05-11 |
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Granted publication date: 20160511 Termination date: 20200728 |