CN107552995A - A kind of welding method and welding structure of titanium steel multiple tube - Google Patents
A kind of welding method and welding structure of titanium steel multiple tube Download PDFInfo
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- CN107552995A CN107552995A CN201710985061.1A CN201710985061A CN107552995A CN 107552995 A CN107552995 A CN 107552995A CN 201710985061 A CN201710985061 A CN 201710985061A CN 107552995 A CN107552995 A CN 107552995A
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- 238000003466 welding Methods 0.000 title claims abstract description 147
- 229910001200 Ferrotitanium Inorganic materials 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000012545 processing Methods 0.000 claims abstract description 21
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical group [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 162
- 239000010936 titanium Substances 0.000 claims description 156
- 229910052719 titanium Inorganic materials 0.000 claims description 156
- 229910000831 Steel Inorganic materials 0.000 claims description 76
- 239000010959 steel Substances 0.000 claims description 76
- 238000005520 cutting process Methods 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 4
- 238000011161 development Methods 0.000 abstract description 4
- 239000002131 composite material Substances 0.000 abstract description 3
- 210000001624 hip Anatomy 0.000 description 32
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 8
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000003754 machining Methods 0.000 description 5
- 230000002787 reinforcement Effects 0.000 description 5
- 229910052786 argon Inorganic materials 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000002905 metal composite material Substances 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Arc Welding In General (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention provides a kind of welding method and welding structure of titanium steel multiple tube, belong to composite tube welding technical field, including step：A. the tube layer at the mouth of pipe to be welded of titanium steel multiple tube is processed, by each interior tube layer in external tube layer successively exposure and formed inner tube layer reserves section respectively；B. the mouth of pipe to be welded after processing of step A is welded；Wherein, the reserved section of interior tube layer that the interior tube layer of mouth of pipe innermost layer to be welded reserves section and another mouth of pipe innermost layer to be welded is welded, and the external tube layer of the mouth of pipe to be welded and remaining each interior tube layer reserve section and corresponded and welded by corresponding connector with the external tube layer of another mouth of pipe to be welded and the reserved section of remaining each interior tube layer respectively.The present invention improves weld strength, realizes the reliable welding of titanium steel multiple tube, promotes the application and development of titanium steel multiple tube.
Description
Technical field
The invention belongs to composite tube welding technical field, and in particular to the welding method and welding knot of a kind of titanium steel multiple tube
Structure.
Background technology
Metal composite pipe is made up of two or more different materials, passes through various modifications and interconnection technique between tube layer
Formation is combined closely, and its general design principles is that basic unit's (carbon steel layer) meets pipe design allowable stress, and coating (alloy-layer) supports
Anticorrosive or abrasion etc..
Because metal composite pipe make use of the optimum performance of base material and coating metal, can effectively be dropped relative to Integral alloy pipe
Low cost；And have to Integral alloy pipe stress, corrosion cracking sensitiveness chloride and/or sour environment in, metal
Multiple tube can improve the safety and reliability of application, and therefore, metal composite pipe is in the stronger oil of corrosivity, petrochemical industry
The field such as enterprise, nuclear industry and medicine, food processing is applied widely.
At present, the stainless steel composite pipe in metal composite pipe, nickel and nickel alloy multiple tube and Copper steel cladding pipe etc. can
Achieved a butt joint in the form of fusion welding, and the seam organization of high quality can be obtained.
But titanium steel multiple tube is because the elements such as Ti and Fe, Mn, Ni easily form frangible compounds between metal, Gu using fusing
Breakable link will be formed by welding the method directly welded, and it is also to constrain titanium steel multiple tube not only without practical value
Using and development principal element.
The content of the invention
In order to solve above mentioned problem existing for prior art, the invention provides a kind of welding method of titanium steel multiple tube and
Welding structure, to avoid the welding ends in titanium steel multiple tube from forming breakable link, promote the application and development of titanium steel multiple tube.
The technical solution adopted in the present invention is：
A kind of welding method of titanium steel multiple tube, it comprises the following steps：
A. the tube layer at the mouth of pipe to be welded of titanium steel multiple tube is processed, each interior tube layer in external tube layer is sudden and violent successively
Reveal and distinguish formed inner tube layer and reserve section；
B. the mouth of pipe to be welded after processing of step A is welded；Wherein, the interior tube layer of mouth of pipe innermost layer to be welded is pre-
Stay the interior tube layer of section and another mouth of pipe innermost layer to be welded to reserve section to be welded, the external tube layer of the mouth of pipe to be welded and remaining it is each in
Tube layer reserves section and passes through corresponding connector one with the external tube layer of another mouth of pipe to be welded and the reserved section of remaining each interior tube layer respectively
One is correspondingly welded.
Preferably, the titanium steel multiple tube is outer layer steel-internal layer titanium structure；The welding method comprises the following steps：
A. cutting processing is carried out to the tube layer of the mouth of pipe to be welded of titanium steel multiple tube, by the titanium tube layer exposure in steel pipe layer simultaneously
Form titanium tube layer and reserve section；
B. the titanium tube layer of the mouth of pipe to be welded after processing of step A is reserved into section and the titanium tube layer of another mouth of pipe to be welded is pre-
Section is stayed to be welded；
C. connector is arranged outside the reserved section of titanium tube layer of the mouth of pipe to be welded, and by the both ends of the connector respectively with treating
Steel pipe layer at the welding mouth of pipe and the steel pipe layer at another mouth of pipe to be welded are welded.
Preferably, the connector includes semiorbicular first support block and semiorbicular second support block, and described first
Support block and second support block splicing circularize；The internal diameter of the connector reserves the external diameter phase of section with the titanium tube layer
Match somebody with somebody, and the both ends of the surface of the connector are bonded with the groove face of the steel pipe layer of respective end respectively.
Preferably, the inner ring surface of first support block and second support block is separately provided for accommodating weld seam
Groove；The cross sectional shape of first support block and second support block is hexagon；The groove face of the steel pipe layer be with
The inclined-plane that the connector both ends of the surface are engaged, and the bottom waist of the connector and inclined-plane fitting, the top of the connector
Waist forms the welding groove of triangle with the inclined-plane.
Preferably, the titanium steel multiple tube is outer layer titanium-internal layer steel construction, and the welding method comprises the following steps：
A. cutting processing is carried out to the tube layer of the mouth of pipe to be welded of titanium steel multiple tube, by the steel pipe layer exposure in titanium tube layer simultaneously
Form steel pipe layer and reserve section；
B. the steel pipe layer of the mouth of pipe to be welded after processing of step A is reserved into section and the steel pipe layer of another mouth of pipe to be welded is pre-
Section is stayed to be welded；
C. connector is arranged outside the reserved section of steel pipe layer of the mouth of pipe to be welded, and by the both ends of the connector respectively with treating
Titanium tube layer at the welding mouth of pipe and the titanium tube layer at another mouth of pipe to be welded are welded.
Preferably, the connector is hollow sleeve pipe；The external diameter of the internal diameter of described sleeve pipe and the titanium tube layer matches,
And outer surface of the both ends of described sleeve pipe respectively with the titanium tube layer of respective end is welded, the groove face of the titanium tube layer is located at the set
In pipe.
Preferably, described sleeve pipe is titanium sleeve pipe.
Preferably, the titanium steel multiple tube is outer layer titanium-middle level steel-internal layer titanium structure；The welding method includes following
Step：
A. cutting processing is carried out to the tube layer of the mouth of pipe to be welded of titanium steel multiple tube, in exposing successively in outer layer titanium tube layer
Layer steel pipe layer and internal layer titanium tube layer simultaneously form the reserved section of middle level steel pipe layer and the reserved section of internal layer titanium tube layer respectively；
B. the internal layer titanium tube layer of the mouth of pipe to be welded after processing of step A is reserved into section and the internal layer of another mouth of pipe to be welded
Titanium tube layer is reserved section and welded；
C. reserve in the internal layer titanium tube layer of the mouth of pipe to be welded and be arranged the first connector outside section, and by first connector
The middle level steel pipe layer that both ends reserve at section and another mouth of pipe to be welded with the middle level steel pipe layer at the mouth of pipe to be welded respectively reserves section
Welded；
D. be arranged the second connector outside first connector, and by the both ends of second connector respectively with it is to be welded
The outer layer titanium tube layer at outer layer titanium tube layer and another mouth of pipe to be welded at adapter mouth is welded.
Preferably, first connector is shaped as annular；The internal diameter of first connector and the internal layer titanium tube
The external diameter of the reserved section of layer matches, and middle level steel pipe layer of the both ends of the surface of first connector respectively with respective end reserves section
Groove face is bonded；First connector includes semiorbicular first support block and the second support block, and first support block
It is separately provided for accommodating the groove of weld seam with the inner ring surface of second support block；
Second connector is hollow sleeve pipe；The external diameter phase of the internal diameter of described sleeve pipe and the outer layer titanium tube layer
Match somebody with somebody, and outer surface of the both ends of described sleeve pipe respectively with the outer layer titanium tube layer of respective end is welded, the groove of the outer layer titanium tube layer
Face is located in described sleeve pipe.
Based on the welding method of above-mentioned titanium steel multiple tube, present invention also offers the welding structure of titanium steel multiple tube in one,
It includes：The first welding mouth of pipe and the second welding mouth of pipe；The first welding mouth of pipe and the second welding mouth of pipe are respectively set
It is equipped with external tube layer and each interior tube layer of exposure reserves section successively；
The interior tube layer of the first welding mouth of pipe innermost layer reserves section and the interior tube layer of the described second welding mouth of pipe innermost layer
Reserved section welding, the external tube layer of the first welding mouth of pipe and remaining each interior tube layer reserve section and weld the mouth of pipe with described second respectively
External tube layer and remaining each interior tube layer reserve section pass through corresponding connector correspond welding.
Beneficial effects of the present invention are：
The welding method and welding structure of titanium steel multiple tube provided by the present invention, by by the interior tube layer of tube layer innermost layer
Reserved section is directly welded and external tube layer and remaining each interior tube layer is reserved into section and welded one by one by corresponding connector respectively, is made
Each tube layer welding ends of different materials separately welds, and avoids because titanium steel multiple tube directly welds the breakable link of formation, therefore,
Weld strength is improved, realizes the reliable welding of titanium steel multiple tube, promotes the application and development of titanium steel multiple tube.
Brief description of the drawings
Fig. 1 is the structural representation of the steel pipe layer described in embodiment 1；
Fig. 2 is the structural representation of the first support block described in embodiment 1；
Fig. 3 is the welding structure schematic diagram described in embodiment 1；
Fig. 4 is the welding structure schematic diagram described in embodiment 2；
Fig. 5 is the welding structure schematic diagram described in embodiment 3.
In figure mark for：
1st, internal layer titanium tube layer reserves section；2nd, outer layer pipe layer；3rd, the first support block；4th, inner ring surface；5th, groove；6th, bottom waist；
7th, waist is pushed up；8th, inner layer steel pipe layer reserves section；9th, outer layer titanium tube layer；10th, groove；11st, titanium sleeve pipe；12nd, middle level steel pipe layer reserves section.
Embodiment
Embodiment 1
A kind of welding method of the titanium steel multiple tube of internal layer titanium-outer layer steel construction is present embodiments provided, it includes following
Step：
The mouth of pipe to be welded processing of titanium steel multiple tube：Machine is carried out to the mouth of pipe to be welded at the both ends to be docked of titanium steel multiple tube
Tool is processed, and by the internal layer titanium tube layer exposure in outer layer pipe layer 2 and forms the reserved section 1 of internal layer titanium tube layer.Preferably, outer layer pipe
The groove face of layer 2 is the inclined-plane in 120 °；Internal layer titanium tube layer reserves section 1 and reserves 5~10mm, and internal layer titanium tube layer reserves section
0.1~0.15mm below 1 Surface Machining to titanium tube layer and the faying face of steel pipe layer.
Support block is processed：Support block has two, respectively the first support block and the second support block, the first support block and second
The structure of support block is identical, and two sliceable semiorbicular support blocks for forming annular are processed by the way of machining.Its
In, it is preferable that the cross sectional shape of two support blocks is hexagon, and wall thickness is identical with the thickness of steel coating tube layer, and internal diameter is internal layer
Titanium tube layer reserves pipe external diameter R+ (0~0.02) mm of section 1；The folder of the inner ring surface 4 of two support blocks and two bottom waists 6 of its both sides
Angle is 120 °, and the angle of the outer ring surface of two support blocks and the two of its both sides top waists 7 is 120 °, and the bottom waist of support block
6 is stupefied at the 1/3 of the wall thickness of outer layer pipe layer 2 with the waist of the top junction of waist 7.Meanwhile the inner ring surface 4 of two support blocks is also set
One groove 5 being distributed along annular, peripheral, the weld reinforcement of section 1 butt end is reserved for accommodating internal layer titanium tube layer.
By support block, outer layer pipe layer 2 can be not only connected, ensures the intensity of pipe-pipe docking；Moreover, support block pair
Internal layer titanium tube layer, which reserves section 1, has binding force, ensures the internal layer titanium tube layer after welding to reserve at section 1 and can bear pressure.
Internal layer titanium tube layer welds：By two pipes of the mouth of pipe group pair of two mouths of pipe to be welded and guarantee with one heart first；Again by two
Welded using plasma weldering, argon arc welding or agitating friction weldering the butt end that the internal layer titanium tube layer of the mouth of pipe to be welded reserves section 1
Connect, complete the welding of internal layer titanium tube layer.
Support block welding：Two support blocks are placed on to the outside of the reserved section 1 of internal layer titanium tube layer of two mouths of pipe to be welded, and
Splicing circularizes；The inner ring surface 4 of two support blocks is bonded with the outer surface at the reserved end of internal layer titanium tube layer, the inner ring of two support blocks
The bottom waist 6 of the both sides of face 4 is bonded with the groove face of corresponding outer layer pipe layer 2 respectively, the top of the outer ring surface both sides of two support blocks
Waist 7 forms the welding groove of triangle with the groove face of corresponding outer layer pipe layer 2 respectively, and manual arc is used at welding groove
Weldering is protected in weldering, carbon dioxide vapour or submerged-arc welding is welded.
As Figure 1-3, based on above-mentioned welding method, the present embodiment additionally provides a kind of internal layer titanium-outer layer steel construction
The welding structure of titanium steel multiple tube, it includes：The first welding mouth of pipe and the second welding mouth of pipe；The first welding mouth of pipe and the second welding
The mouth of pipe is respectively provided with outer layer pipe layer 2 and the internal layer titanium tube layer of exposure reserves section 1.
Preferably, the groove face of outer layer pipe layer 2 is the inclined-plane in 120 °；It is 5 that internal layer titanium tube layer, which reserves the length in reserve of section 1,
~10mm；The surface that internal layer titanium tube layer reserves section 1 is located at 0.1~0.15mm below titanium steel faying face.
The first welding mouth of pipe dock with the second welding mouth of pipe, and the first reserved section 1 of internal layer titanium tube layer and for welding the mouth of pipe
The internal layer titanium tube layer of the two welding mouths of pipe is reserved section 1 and welded, and the outer layer pipe layer 2 and second of the first welding mouth of pipe welds the outer of the mouth of pipe
Layer steel pipe layer 2 is welded by corresponding connector.
Wherein it is preferred to connector is two sliceable semiorbicular support blocks for forming annular, section of two support blocks
Face is shaped as hexagon, and wall thickness is identical with the thickness of outer layer pipe layer 2, and internal diameter is the pipe external diameter R+ that internal layer titanium tube layer reserves section 1
(0~0.02) mm；The angle of the inner ring surface 4 of two support blocks and two bottom waists 6 of its both sides is 120 °, two support blocks
The angle of outer ring surface and two top waists 7 of its both sides is 120 °, and the bottom waist 6 of support block and the stupefied position of waist of the top junction of waist 7
At the 1/3 of the wall thickness of outer layer pipe layer 2.Meanwhile the inner ring surface 4 of two support blocks has also set one along annular, peripheral distribution
Groove 5, the weld reinforcement of the butt end of section 1 is reserved for accommodating internal layer titanium tube layer.
First support block 3 and the splicing of the second support block circularize, and are sheathed on the first welding mouth of pipe and the second welding mouth of pipe
Internal layer titanium tube layer reserve the outer surface of section 1；The inner ring surface 4 of first support block 3 and the second support block reserves section 1 with internal layer titanium tube layer
Outer surface fitting, and groove face of the bottom waist 6 of the first support block 3 and the second support block with the outer layer pipe layer 2 of respective end
Fitting, top waist 7 forms the welding groove of triangle with the groove face of the outer layer pipe layer 2 of respective end, and is carried out at welding groove
Welding.
Embodiment 2
A kind of welding method of the titanium steel multiple tube of internal layer steel-outer layer titanium structure is present embodiments provided, it includes following
Step：
The mouth of pipe to be welded processing of titanium steel multiple tube：The mouth of pipe to be welded at the both ends that titanium steel multiple tube to be docked carries out machine
Tool is processed, and is removed outer layer titanium tube layer 9 by the inner layer steel pipe layer exposure in outer layer titanium tube layer 9 and is formed the reserved section 8 of inner layer steel pipe layer.
Preferably, the length in reserve that inner layer steel pipe layer reserves section 8 is 15~20mm；Meanwhile the end face that section 8 is reserved in internal layer steel pipe layer adds
30 ° of grooves 10 of work, two inner layer steel pipe layers is reserved section 8 and dock the welding groove that a triangle is formed after the outside of butt end,
So, the progress of welding is not only contributed to, but also welding effect can be improved.
Titanium sleeve pipe 11 is processed：It is processed from the titanium sleeve pipe 11 with the same material of outer layer titanium tube layer 9, wherein, titanium sleeve pipe 11
The external diameter of internal diameter and outer layer titanium tube layer 9 match, the wall thickness of titanium sleeve pipe 11 and the consistency of thickness of outer layer titanium tube layer 9, titanium sleeve pipe
11 length is 50 ± 5mm.
Butt welding：Titanium sleeve pipe 11 is first enclosed on to the side of titanium steel multiple tube, then the mouth of pipe by two mouths of pipe to be welded in advance
Group pair simultaneously ensures that pipe-pipe is concentric；Wherein, inner layer steel pipe layer reserves the butt end of section 8 using manual electric arc welding, carbon dioxide vapour guarantor
Weldering or submerged-arc welding are welded, and the reinforcement of weld seam is less than the thickness of outer layer titanium tube layer 9 after welding.
Mobile titanium sleeve pipe 11, titanium sleeve pipe 11 is set to be located at the outside of the reserved section 8 of inner layer steel pipe layer of two mouths of pipe to be welded, and will
The both ends of titanium sleeve pipe 11 use plasma weldering, argon arc welding or agitating friction with the outer surface of corresponding outer layer titanium tube layer 9 respectively
Welded, and form angle welding.
As shown in figure 4, being based on above-mentioned welding method, the present embodiment additionally provides a kind of titanium of internal layer steel-outer layer titanium structure
The welding structure of steel pipe, it includes：The first welding mouth of pipe and the second welding mouth of pipe；The first welding mouth of pipe and the second welded pipe
Mouth is respectively provided with outer layer titanium tube layer 9 and the inner layer steel pipe layer of exposure reserves section 8.Preferably, inner layer steel pipe layer reserves section 8
Length in reserve is 15~20mm；And the end face of the reserved section 8 of inner layer steel pipe layer is provided with 30 ° of grooves 10.
The inner layer steel pipe layer of the first welding mouth of pipe reserves section 8 and the reserved section 8 of inner layer steel pipe layer of the second welding mouth of pipe is welded,
And soldered is located at the welding groove of the triangle of two grooves 10 formation；The outer layer titanium tube layer 9 and second of the first welding mouth of pipe welds
The outer layer titanium tube layer 9 of adapter mouth is welded by corresponding connector.
Preferably, connector is titanium sleeve pipe 11, and the both ends of titanium sleeve pipe 11 are welded with the first welding mouth of pipe and second respectively
The outer surface welding of the outer layer titanium tube layer 9 of the mouth of pipe, and angle welding is formed at welding ends.Wherein, the internal diameter of titanium sleeve pipe 11 with it is outer
The external diameter of layer titanium tube layer 9 matches, and the wall thickness of titanium sleeve pipe 11 and the consistency of thickness of outer layer titanium tube layer 9, the length of titanium sleeve pipe 11 are
50±5mm。
In the present embodiment, including but not limited to titanium sleeve pipe 11, it can also be other without elements such as Fe, Mn, Ni
Hollow tube made of welding material, so as to avoid being formed fragility between metal in the welding process of outer layer titanium tube layer 9
Compound.
Embodiment 3
A kind of welding method of the titanium steel multiple tube of outer layer titanium-middle level steel-internal layer titanium structure is present embodiments provided, it is wrapped
Include following steps：
The mouth of pipe to be welded processing of titanium steel multiple tube：Two mouths of pipe to be welded to be docked to titanium steel multiple tube carry out machinery
Processing, the middle level steel pipe layer in outer layer titanium tube layer 9 and internal layer titanium tube layer are exposed and form middle level steel pipe layer respectively successively and is reserved
Section 12 and internal layer titanium tube layer reserve section 1.
Wherein it is preferred to which the groove face that middle level steel pipe layer reserves the end face of section 12 is the inclined-plane in 120 °, middle level steel pipe layer is pre-
The length in reserve for staying section 12 is 15~20mm；Internal layer titanium tube layer reserves section 1 and reserves 5~10mm, and internal layer titanium tube layer is reserved
0.1~0.15mm below the Surface Machining of section 1 to the faying face of middle steel pipe layer and internal layer titanium tube layer.
Support block is processed：Two sliceable semiorbicular support blocks for forming annular are processed by the way of machining.
Wherein it is preferred to which the cross sectional shape of two support blocks is regular hexagon, wall thickness reserves the thickness phase of section 12 with middle level steel pipe layer
Together, internal diameter is pipe external diameter R+ (0~0.02) mm that internal layer titanium tube layer reserves section 1；The inner ring surface 4 of two support blocks and its both sides
The angle of two bottom waists 6 is 120 °, and the angle of the outer ring surface of two support blocks and the two of its both sides top waists 7 is 120 °,
And the bottom waist 6 of support block and the waist of the top junction of waist 7 are stupefied at 1/3 that middle level steel pipe layer reserves the wall thickness of section 12.Meanwhile two
The inner ring surface 4 of support block has also set a groove 5 being distributed along annular, peripheral, and section 1 is reserved for accommodating internal layer titanium tube layer
The weld reinforcement of butt end.
Titanium sleeve pipe 11 is processed：It is processed from the titanium sleeve pipe 11 with the same material of outer layer titanium tube layer 9, the titanium sleeve pipe after processing
The external diameter of 11 internal diameter and outer layer titanium tube layer 9 matches, the wall thickness of titanium sleeve pipe 11 and the consistency of thickness of outer layer titanium tube layer 9.
Internal layer titanium tube layer welds：By two pipes of two mouth of pipe groups pair to be welded and guarantee with one heart first；It is to be welded by two again
The internal layer titanium tube layer of the mouth of pipe is reserved section 1 and docked, and is welded using plasma weldering, argon arc welding or agitating friction weldering.
Middle level steel pipe layer welding：The middle level steel pipe layer that two support blocks are placed on to two mouths of pipe to be welded reserves the outer of section 12
Side, and splice and circularize；The inner ring surface 4 of two support blocks is bonded with the outer surface at the reserved end of internal layer titanium tube layer, two support blocks
The bottom waists 6 of the both sides of inner ring surface 4 the groove face of section 12 reserved with the middle level steel pipe layer of corresponding end be respectively bonded, two support blocks
The top waist 7 of outer ring surface both sides reserves the welding groove of the groove face formation triangle of section 12 with the middle level steel pipe layer of corresponding end respectively,
And it is welded at welding groove and is welded using manual electric arc welding, carbon dioxide vapour guarantor weldering or submerged arc.
Outer layer titanium tube layer 9 welds：Mobile titanium sleeve pipe 11, make titanium sleeve pipe 11 be located at two mouths of pipe to be welded middle level steel pipe layer it is pre-
The outside of section 12 is stayed, and the both ends of titanium sleeve pipe 11 are welded with the outer surface of the outer layer titanium tube layer 9 of respective end using plasma respectively,
Argon arc welding or agitating friction weldering are welded, and form angle welding；Wherein it is preferred to the both ends of the surface of titanium sleeve pipe 11 respectively with
The distance in the groove face of the outer layer titanium tube layer 9 of its respective end is 30 ± 5mm.
As shown in figure 5, being based on above-mentioned welding method, the present embodiment additionally provides a kind of outer layer titanium-middle level steel-internal layer titanium knot
The welding structure of the titanium steel multiple tube of structure, it includes：The first welding mouth of pipe and the second welding mouth of pipe；The first welding mouth of pipe and second
The welding mouth of pipe is respectively provided with outer layer titanium tube layer 9 and middle level steel pipe layer exposed successively reserves section 12 and internal layer titanium tube layer is pre-
Stay section 1.
Preferably, the groove face that middle level steel pipe layer reserves the end face of section 12 is the inclined-plane in 120 °, and middle level steel pipe layer reserves section
12 length in reserve is 15~20mm；Internal layer titanium tube layer reserves section 1 and reserves 5~10mm, and internal layer titanium tube layer reserves section 1
0.1~0.15mm below Surface Machining to the faying face of middle steel pipe layer and internal layer titanium tube layer.Meanwhile more there are ground, internal layer titanium tube
The end face of the reserved section 1 of layer is provided with 30 ° of grooves 10.
The internal layer titanium tube layer of the first welding mouth of pipe reserves section 1 and the reserved section 1 of internal layer titanium tube layer of the second welding mouth of pipe is welded,
And soldered is located at the welding groove of the triangle of two grooves 10 formation；First welding the mouth of pipe middle level steel pipe layer reserve section 12 with
The middle level steel pipe layer of the second welding mouth of pipe reserves section 12 and passes through corresponding support block welding；The outer layer titanium tube layer of the first welding mouth of pipe
9 are welded with the outer layer titanium tube layer 9 of the second welding mouth of pipe by corresponding titanium sleeve pipe 11.
Wherein, support block includes two sliceable semiorbicular support blocks for forming annular, and the section of two support blocks
Hexagon is shaped as, the thickness that wall thickness reserves section 12 with middle level steel pipe layer is identical, and internal diameter is that internal layer titanium tube layer is reserved outside the pipe of section 1
Footpath R+ (0~0.02) mm；The angle of the inner ring surface 4 of two support blocks and two bottom waists 6 of its both sides is 120 °, two supports
The angle of the outer ring surface of block and the two of its both sides top waists 7 is 120 °, and the bottom waist 6 of support block and the waist of the top junction of waist 7
The stupefied middle level steel pipe layer that is located at is reserved at the 1/3 of the wall thickness of section 12；Meanwhile the inner ring surface 4 of two support blocks has also set one along ring
The circumferentially distributed groove 5 of shape, the weld reinforcement at the butt end of section 1 is reserved for accommodating internal layer titanium tube layer.
The external diameter of the internal diameter of titanium sleeve pipe 11 and outer layer titanium tube layer 9 matches, wall thickness and the outer layer titanium tube layer 9 of titanium sleeve pipe 11
Consistency of thickness.
First support block 3 and the splicing of the second support block circularize, and are sheathed on the first welding mouth of pipe and the second welding mouth of pipe
Internal layer titanium tube layer reserve the outer surface of section 1；The inner ring surface 4 of first support block 3 and the second support block reserves section 1 with internal layer titanium tube layer
Outer surface fitting, and the bottom waist 6 of the first support block 3 and the second support block reserves section 12 with the middle level steel pipe layer of respective end
Groove face is bonded, and the groove face that top waist 7 reserves section 12 with the middle level steel pipe layer of respective end forms the welding groove of triangle, and leads to
Cross welding groove welding.
Weld outer surface of the both ends of titanium sleeve pipe 11 respectively with the first welding mouth of pipe and the outer layer titanium tube layer 9 of the second welding mouth of pipe
Connect, and angle welding is formed at welding ends, and the both ends of the titanium sleeve pipe 11 groove face with the outer layer titanium tube layer 9 of its respective end respectively
Distance be 30 ± 5mm.
The preferred embodiment of the present invention is the foregoing is only, is not intended to limit the invention, for this area skill
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (10)
1. a kind of welding method of titanium steel multiple tube, it is characterised in that comprise the following steps：
A. the tube layer at the mouth of pipe to be welded of titanium steel multiple tube is processed, by each interior tube layer in external tube layer successively exposure simultaneously
Formed inner tube layer reserves section respectively；
B. the mouth of pipe to be welded after processing of step A is welded；Wherein, the interior tube layer of mouth of pipe innermost layer to be welded reserves section
Section is reserved with the interior tube layer of another mouth of pipe innermost layer to be welded to be welded, the external tube layer of the mouth of pipe to be welded and remaining each interior tube layer
Reserved section reserves section with the external tube layer of another mouth of pipe to be welded and remaining each interior tube layer and passes through a pair of corresponding connector 1 respectively
It should be welded.
2. the welding method of titanium steel multiple tube according to claim 1, it is characterised in that the titanium steel multiple tube is outer layer
Steel-internal layer titanium structure；The welding method comprises the following steps：
A. cutting processing is carried out to the tube layer of the mouth of pipe to be welded of titanium steel multiple tube, by the titanium tube layer exposure in steel pipe layer and formed
Titanium tube layer reserves section；
B. the titanium tube layer of the mouth of pipe to be welded after processing of step A is reserved into section and the titanium tube layer of another mouth of pipe to be welded reserves section
Welded；
C. reserve in the titanium tube layer of the mouth of pipe to be welded and be arranged connector outside section, and by the both ends of the connector respectively with it is to be welded
The steel pipe layer at steel pipe layer and another mouth of pipe to be welded at the mouth of pipe is welded.
3. the welding method of titanium steel multiple tube according to claim 2, it is characterised in that the connector includes semi-circular
The first support block and semiorbicular second support block, first support block and second support block splicing circularize；Institute
State connector internal diameter and the titanium tube layer reserve section external diameter match, and the both ends of the surface of the connector respectively with respective end
Steel pipe layer groove face fitting.
4. the welding method of titanium steel multiple tube according to claim 3, it is characterised in that first support block and described
The inner ring surface of second support block is separately provided for accommodating the groove of weld seam；First support block and second support block
Cross sectional shape be hexagon；The groove face of the steel pipe layer is the inclined-plane being engaged with the connector both ends of the surface, and described
The bottom waist of connector and inclined-plane fitting, the top waist of the connector form the welding groove of triangle with the inclined-plane.
5. the welding method of titanium steel multiple tube according to claim 1, it is characterised in that the titanium steel multiple tube is outer layer
Titanium-internal layer steel construction, the welding method comprise the following steps：
A. cutting processing is carried out to the tube layer of the mouth of pipe to be welded of titanium steel multiple tube, by the steel pipe layer exposure in titanium tube layer and formed
Steel pipe layer reserves section；
B. the steel pipe layer of the mouth of pipe to be welded after processing of step A is reserved into section and the steel pipe layer of another mouth of pipe to be welded reserves section
Welded；
C. reserve in the steel pipe layer of the mouth of pipe to be welded and be arranged connector outside section, and by the both ends of the connector respectively with it is to be welded
The titanium tube layer at titanium tube layer and another mouth of pipe to be welded at the mouth of pipe is welded.
6. the welding method of titanium steel multiple tube according to claim 5, it is characterised in that the connector is hollow set
Pipe；The external diameter of the internal diameter of described sleeve pipe and the titanium tube layer matches, and the both ends of the described sleeve pipe titanium tube with respective end respectively
The outer surface welding of layer, the groove face of the titanium tube layer is located in described sleeve pipe.
7. the welding method of titanium steel multiple tube according to claim 6, it is characterised in that described sleeve pipe is titanium sleeve pipe.
8. the welding method of titanium steel multiple tube according to claim 1, it is characterised in that the titanium steel multiple tube is outer layer
Titanium-middle level steel-internal layer titanium structure；The welding method comprises the following steps：
A. cutting processing is carried out to the tube layer of the mouth of pipe to be welded of titanium steel multiple tube, exposes the middle level steel in outer layer titanium tube layer successively
Tube layer and internal layer titanium tube layer simultaneously form the reserved section of middle level steel pipe layer and the reserved section of internal layer titanium tube layer respectively；
B. the internal layer titanium tube layer of the mouth of pipe to be welded after processing of step A is reserved into section and the internal layer titanium tube of another mouth of pipe to be welded
The reserved section of layer is welded；
C. reserve in the internal layer titanium tube layer of the mouth of pipe to be welded and be arranged the first connector outside section, and by the both ends of first connector
The middle level steel pipe layer at section and another mouth of pipe to be welded is reserved with the middle level steel pipe layer at the mouth of pipe to be welded respectively and reserves section progress
Welding；
D. be arranged the second connector outside first connector, and by the both ends of second connector respectively with adapter to be welded
Outer layer titanium tube layer at mouthful and the outer layer titanium tube layer at another mouth of pipe to be welded are welded.
9. the welding method of titanium steel multiple tube according to claim 8, it is characterised in that the shape of first connector
For annular；The external diameter that the internal diameter of first connector reserves section with the internal layer titanium tube layer matches, and first connection
The groove face that the both ends of the surface of part reserve section with the middle level steel pipe layer of respective end respectively is bonded；First connector includes semi-circular
The first support block and the second support block, and the inner ring surface of first support block and second support block is respectively arranged with use
In the groove for accommodating weld seam；
Second connector is hollow sleeve pipe；The external diameter of the internal diameter of described sleeve pipe and the outer layer titanium tube layer matches, and
The both ends of described sleeve pipe are welded with the outer surface of the outer layer titanium tube layer of respective end respectively, and the groove face of the outer layer titanium tube layer is located at
In described sleeve pipe.
10. a kind of welding structure of titanium steel multiple tube, it is characterised in that including the first welding mouth of pipe and the second welding mouth of pipe；Institute
State the first welding mouth of pipe and the second welding mouth of pipe is respectively provided with outer tube and each interior tube layer of exposure is reserved successively
Section；
The interior tube layer of the first welding mouth of pipe innermost layer reserves section and the interior tube layer of the described second welding mouth of pipe innermost layer is reserved
It is outer with the described second welding mouth of pipe respectively that section welding, the external tube layer of the first welding mouth of pipe and remaining each interior tube layer reserve section
Tube layer and remaining each interior tube layer reserve section and correspond welding by corresponding connector.
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