CN102554484A - Metal pipe welding method and metal pipe welding assembly - Google Patents
Metal pipe welding method and metal pipe welding assembly Download PDFInfo
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- CN102554484A CN102554484A CN2012100068999A CN201210006899A CN102554484A CN 102554484 A CN102554484 A CN 102554484A CN 2012100068999 A CN2012100068999 A CN 2012100068999A CN 201210006899 A CN201210006899 A CN 201210006899A CN 102554484 A CN102554484 A CN 102554484A
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- 238000003466 welding Methods 0.000 title claims abstract description 127
- 238000000034 method Methods 0.000 title claims abstract description 49
- 239000002184 metal Substances 0.000 title claims abstract description 48
- 238000002844 melting Methods 0.000 claims description 18
- 230000008018 melting Effects 0.000 claims description 18
- 229910001220 stainless steel Inorganic materials 0.000 claims description 9
- 239000010935 stainless steel Substances 0.000 claims description 9
- 238000002788 crimping Methods 0.000 claims description 7
- 230000004323 axial length Effects 0.000 claims description 6
- 210000001503 joint Anatomy 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 238000005476 soldering Methods 0.000 claims description 4
- 230000004927 fusion Effects 0.000 abstract description 5
- 230000001681 protective effect Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000000945 filler Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 210000000080 chela (arthropods) Anatomy 0.000 description 1
- 238000000205 computational method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The invention discloses a metal pipe welding method and a metal pipe welding assembly. The method comprises the steps of: (1) inserting one end of a liner tube into the pipe cavity at the welded end of a pipe to be welded in such a manner that the other end of the liner tube protrudes out of the welded end of the pipe to be welded; (2) inserting the portion of the liner tube protruding out of the welded end of the pipe to be welded into the pipe cavity of the welded end of another pipe to be welded, and butt-connecting the welded ends of the two pipes to be welded to form a seam to be welded; and (3) welding the pipes at the seam to be welded to form a fusion region so as to connect the welded ends of the two pipes to be welded. The metal pipe welding assembly comprises two pipes to be welded and a liner tube, wherein both ends of the liner tube are respectively inserted in the pipe cavity of one pipe to be welded; and a fusion region is formed by welding at the joint of the welded ends of the two pipes to be welded. During conducting gas shielded welding, the metal pipe welding method can ensure the final welding seam strength equal to the strength of the two pipes at both ends without filling the inner side of the welding seam with a protective gas, and can effectively prevent occurrence of hanging accretions.
Description
Technical field
The invention belongs to metallic conduit and be welded to connect technical field, the metal tube weld assembly that is specifically related to a kind of welding method of metal tube and adopts this method to process.
Background technology
The safest in the metallic conduit connected mode, reliable connection method is welded to connect beyond doubt.But existing several kinds of connected modes for example spigot-and-socket are welded to connect or dock welding connecting mode certain defective is all arranged, especially for the welding of thin-wall stainless steel.
The spigot-and-socket welding connecting mode is to weld after the welding ends of a pipe fitting to be welded is inserted the tube chamber of another pipe fitting welding ends to be welded, sees shown in Figure 1ly, and have following weak point: (1) bonding strength is lower; Spigot-and-socket is welded to connect and is the overlap joint connection; Its weld seam is a filler weld; Suffered working stress is for cutting shear stress, and by the working strength computational methods, and the effective bearing area of angle welding is 0.707 times of effective area of fillet weld; When therefore lap weld designs, need the bilateral welding just can make weld strength and member (generally being pipe A and joint pipe fitting B) equal strength.And pipe is connected with the socket joint of pipe fitting, in practice of construction, can only implement one-sided welding at pipe fitting one side, and the pipe place end that inserts pipe fitting can't weld, so the weld strength of bayonet joint joint can only reach 50% of pipeline strength.(2) the welding difficulty is bigger, is prone to the burn-through tube wall, necessary gas-filled protective in the pipe, spigot-and-socket welding; Because insert the pipe of pipe fitting, tube wall is thinner, when welding, must make the fusing of pipe fitting port; Can form effective angle welding, and the pipe fitting end is inserted the influence of pipe heat radiation, need have bigger heat input could form the molten bath, the tube wall of pipe is thinner; Very easily overheated being burnt, if the heat input is less, pipe fitting end can merge bad, so operation easier is bigger.If each soldering opening is applied gas-filled protective, the job site condition is limited, and very difficult, working strength is bigger, and operating efficiency is very low.
The butt joint welding connecting mode welds after two fitting to fitting to be welded are docked; See shown in Figure 2ly, have following weak point: butt-welded pipe A port outside diameter is identical with pipe fitting B external diameter, and welding is welded with filler in addition; During welding; If the inboard of connector does not add the gas protection, pipe inside weld place " extension knurl " (molten knurl) very easily appears outward in weld seam owing to welding temperature is overheated, influence service life.If temperature is crossed low non-fusion, the both sides tube wall of weld seam junction does not connect fully, influences service property (quality).
Summary of the invention
The welding method that the purpose of this invention is to provide a kind of metal tube of effective raising welding effect.
Another object of the present invention provides the higher metal tube weld assembly of a kind of weld strength.
The technical scheme that realizes first purpose of the present invention is: a kind of welding method of metal tube may further comprise the steps:
1. be inserted into an end of a bushing pipe in the tube chamber of a pipe fitting welding ends to be welded, and make the other end of this bushing pipe stretch out this pipe fitting welding ends to be welded;
2. the part body that stretches out this pipe fitting welding ends to be welded to bushing pipe is inserted in the tube chamber of another pipe fitting welding ends to be welded, and the welding ends butt joint that makes these two pipe fittings to be welded is to form seam to be welded;
Thereby 3. welding at seam crossing to be welded makes its formation melting zone that the welding ends of two pipe fittings to be welded is linked to each other.
In the technique scheme, above-mentioned steps 1. in, said bushing pipe is fixed in the tube chamber of pipe fitting to be welded through close-fitting mode or crimping mode or adhesive means.
In the technique scheme, the gap between the inwall of the outer wall of said bushing pipe and its place pipe fitting tube chamber to be welded is less than 1 millimeter; Said bushing pipe inserts the axial length of the length of each pipe fitting welding ends tube chamber to be welded more than or equal to melting zone; The wall thickness in said bushing pipe district is more than or equal to 0.3 millimeter.
In the technique scheme, the gap between the inwall of the outer wall of said bushing pipe and its place pipe fitting tube chamber to be welded is less than 0.5 millimeter; The wall thickness in said bushing pipe district is more than or equal to 0.5 millimeter.
In the technique scheme, when the radial section of said two pipe fitting welding ends to be welded was identical, said bushing pipe was to wait the external diameter pipe; The internal diameter of said two pipe fitting welding ends to be welded place tube chambers not simultaneously, said bushing pipe is the two ends body and belong to the reduced pipe that pipe fitting tube chamber to be welded matches separately.
In the technique scheme, the axial cross section shape of said seam to be welded is and perpendicular linearity of pipe fitting central axis to be welded or oblique line shape or arc shaped or V-shape or semi-circular shape or the half-oval shaped that has angle with pipe fitting central axis to be welded; Said pipe fitting to be welded is a thin-wall stainless steel.
In the technique scheme, the inwall of at least one pipe fitting welding ends to be welded is provided with protruding positive stop lug boss, and the end that said bushing pipe inserts this pipe fitting welding ends tube chamber to be welded is connected on this positive stop lug boss.
In the technique scheme, be equipped with protruding positive stop lug boss on the inwall of said two pipe fitting welding ends to be welded, after two pipe fitting butt joints to be welded formed seam to be welded, said bushing pipe was between two positive stop lug boss.
The technical scheme that realizes second purpose of the present invention is: a kind of metal tube weld assembly; Comprise two by welded tube spare; It is characterized in that: also comprise bushing pipe; The two ends of said bushing pipe are inserted one separately by in the tube chamber of welded tube spare welding ends, and said two are had the melting zone that forms through soldering by welded tube spare welding ends joint.
In the technique scheme, said bushing pipe is fixed on by in the tube chamber of welded tube spare through close-fitting mode or crimping mode or adhesive means or melting welding mode.
In the technique scheme, at least one is provided with protruding positive stop lug boss by the inwall of welded tube spare welding ends, and said bushing pipe inserts this end by welded tube spare welding ends tube chamber and is connected on this positive stop lug boss.
In the technique scheme, said two are equipped with protruding positive stop lug boss on the inwall of welded tube spare welding ends, and said bushing pipe is between two positive stop lug boss.
In the technique scheme, the outer wall of said bushing pipe and its place by the gap between the inwall of welded tube spare tube chamber less than 1 millimeter; Said bushing pipe inserts each by the axial length of the length of welded tube spare welding ends tube chamber more than or equal to melting zone; The wall thickness in said bushing pipe district is more than or equal to 0.3 millimeter.
In the technique scheme, the outer wall of said bushing pipe and its place by the gap between the inwall of welded tube spare tube chamber less than 0.5 millimeter; The wall thickness in said bushing pipe district is more than or equal to 0.5 millimeter.
In the technique scheme, said two by the radial section of welded tube spare welding ends when identical, and said bushing pipe is to wait the external diameter pipe; Said two are not by the internal diameter of welded tube spare welding ends place tube chamber not simultaneously, and said bushing pipe is the two ends body and belong to the reduced pipe that is matched by welded tube spare tube chamber separately.
In the technique scheme, the axial cross section shape of said seam to be welded be with by the perpendicular linearity of welded tube spare central axis or with the oblique line shape that is had angle by welded tube spare central axis or arc shaped or V-shape or semi-circular shape or half-oval shaped; Said is thin-wall stainless steel by welded tube spare.
In the technique scheme, said pipe fitting to be welded and all can be plain end pipe by welded tube spare also can be pipe joint, and for example two is logical, threeway or the like.
The present invention has positive effect: (1) the inventive method has been improved the joint welding manner; Said bushing pipe can play the effect of location two pipe fittings to be welded; Again because of covering in the inside line of seam to be welded; The inwall and the inner air tube of two pipe fitting to be welded commissures are completely cut off, thereby when carrying out gas shielded arc welding, need not to fill protective gas to the weld seam inside line; In addition, through this welding manner final weld strength is reached and two ends pipe fitting same intensity; So the present invention can obviously improve weld strength with respect to traditional spigot-and-socket welding; And compare with traditional dock welding, because the insulating effect of bushing pipe is arranged, need not in pipe, to charge into protection gas, simultaneously owing to have bushing pipe, its tube wall is difficult for being burnt, and also can effectively prevent to hang the knurl phenomenon.
Description of drawings
Fig. 1 is a kind of structural representation of traditional spigot-and-socket welding;
Fig. 2 is a kind of structural representation of traditional dock welding;
Fig. 3 is a kind of structural representation of first kind of structure of metal tube weld assembly among the present invention;
Fig. 4 is a kind of structural representation of second kind of structure of metal tube weld assembly among the present invention;
Fig. 5 is a kind of structural representation of the third structure of metal tube weld assembly among the present invention;
Fig. 6 is a kind of structural representation of the 4th kind of structure of metal tube weld assembly among the present invention;
Fig. 7 is a kind of structural representation of the 5th kind of structure of metal tube weld assembly among the present invention;
Fig. 8 is a kind of structural representation of the 6th kind of structure of metal tube weld assembly among the present invention;
Fig. 9 is a kind of structural representation of the 7th kind of structure of metal tube weld assembly among the present invention.
Be labeled as shown in the accompanying drawing: bushing pipe 1, pipe fitting 2 to be welded, positive stop lug boss 21, seam 3 to be welded, melting zone 4.
The specific embodiment
(embodiment 1, metal tube weld assembly and welding method thereof)
Fig. 3 has shown first kind of specific embodiment of the present invention for a kind of structural representation of first kind of structure of metal tube weld assembly among the present invention.
Present embodiment is a kind of stainless steel thin-wall pipe fitting weld assembly; See shown in Figure 1; Comprise two by welded tube spare 2 and bushing pipe 1, the two ends of said bushing pipe 1 are inserted one separately by in the tube chamber of welded tube spare welding ends, and said two are had the melting zone 4 that forms through soldering by welded tube spare welding ends joint.
In the present embodiment; Before welding, said bushing pipe 1 is fixed on by in the tube chamber of welded tube spare through the close-fitting mode, after welding; Bushing pipe 1 also is melted by the part body of welded tube spare joint in abutting connection with two; And formed melting zone 4 by the butt weld of welded tube spare welding ends with two, also after the i.e. welding, bushing pipe 1 not only had been fixedly connected by welded tube spare with two through the close-fitting mode but also through the fusion weld mode.
In concrete practice, also can before welding, be fixed on bushing pipe 1 in two pipe fittings 2 to be welded through adhesive means.
In the present embodiment, said pipe fitting to be welded is meant the pipeline before the welding, be meant welding pipeline afterwards by welded tube spare, but in fact both is same pipe fitting addresses when different workshop section, so the both indicates with Reference numeral 2.
But in concrete practice, when weld strength is less demanding, can make that also bushing pipe 1 outer wall a bit is not melted, and only is to be fixedly connected by welded tube spare with two through the close-fitting mode after the welding.
Because the main effect of said bushing pipe 1 is the partition effect; Prevent promptly that also two are too much contacted with atmosphere by the inwall of welded tube spare butt weld place; In order to avoid when carrying out gas shielded arc welding, cause harmful effect; So no matter the part body of bushing pipe has after welding do not have to be linked to each other by the fusion of welded tube spare joint, can not influence the realization of the object of the invention with two.
In addition; In concrete practice; Also can bushing pipe 1 be fixed in the tube chamber of pipe fitting 2 welding ends to be welded through the crimping mode because the mode of close-fitting effort comparatively in practical operation, and if through making the external diameter of bushing pipe 1 in slightly little and tube chamber aperture pipe fitting welding ends to be welded; Then be convenient to bushing pipe 1 is inserted, only need pincers to press then to make bushing pipe be secured in a press to get final product.
In the present embodiment, said bushing pipe 1 inserts each by the axial length of the length a of welded tube spare welding ends tube chamber greater than melting zone 4, in the concrete practice, also can equal the axial length of melting zone 4.
In the present embodiment, said two by the radial section of welded tube spare welding ends when identical, and said bushing pipe 1 is to wait the external diameter pipe.
In the present embodiment, the axial cross section shape of said seam 3 to be welded be with by the perpendicular linearity of welded tube spare central axis.
The welding method of present embodiment has following steps:
1. an end of a bushing pipe 1, insert and be fixed to through the close-fitting mode in the tube chamber of pipe fitting 2 welding ends to be welded, and make the other end of this bushing pipe 1 stretch out this pipe fitting 2 welding ends to be welded;
2. stretch out bushing pipe 1 the part body of these pipe fitting 2 welding ends to be welded, insert and be fixed to through the close-fitting mode in the tube chamber of another pipe fitting 2 welding ends to be welded, and the welding ends of these two pipe fittings 2 to be welded is docked to form seam 3 to be welded; The axial cross section shape of said seam to be welded 3 is and the perpendicular linearity of pipe fitting 2 central axis to be welded;
Make its formation melting zone 4 that the welding ends of two pipe fittings 2 to be welded is linked to each other thereby 3. weld at seam to be welded 3 places.
In the said method, also can bushing pipe 1 be fixed in the tube chamber of two pipe fittings 2 to be welded through the crimping mode.
In the said method, when the radial section of two pipe fitting 2 welding ends to be welded was identical, said bushing pipe 1 was to wait the external diameter pipe.
In the said method, said bushing pipe 1 inserts the axial length of the length of each pipe fitting 2 welding ends tube chamber to be welded more than or equal to melting zone 4;
(embodiment 2, metal tube weld assembly and welding method thereof)
Fig. 4 has shown second kind of specific embodiment of the present invention for a kind of structural representation of second kind of structure of metal tube weld assembly among the present invention.
Present embodiment and embodiment 1 are basic identical, and difference is: two in the present embodiment is by welded tube spare, and one of them is a stainless steel tube, and another is a pipe joint, and this pipe joint can be two logical, threeway, pipe joint such as curved; The axial cross section shape of said seam to be welded 3 is the oblique line shapes that have angle with pipe fitting 2 central axis to be welded, causes the shape of final melting zone 4 different thus.
(embodiment 3, metal tube weld assembly and welding method thereof)
Fig. 5 has shown the third specific embodiment of the present invention for a kind of structural representation of the third structure of metal tube weld assembly among the present invention.
Present embodiment and embodiment 1 are basic identical, and difference is: two is not the thin wall type stainless steel tube by welded tube spare in the present embodiment, is the normal common stainless steel steel pipe of thickness.The axial cross section shape of said seam to be welded 3 is and the perpendicular half-oval shaped of pipe fitting 2 central axis to be welded, causes the shape of final melting zone 4 different thus.
(embodiment 4, metal tube weld assembly and welding method thereof)
Fig. 6 has shown the 4th kind of specific embodiment of the present invention for a kind of structural representation of the 4th kind of structure of metal tube weld assembly among the present invention.
Present embodiment and embodiment 1 are basic identical, and difference is: the gap between the inwall of the outer wall of said bushing pipe 1 and its place pipe fitting 2 tube chambers to be welded is preferably less than 1 millimeter, and present embodiment is 0.5 millimeter; The wall thickness in said bushing pipe district is preferably greater than and equals 0.3 millimeter, and present embodiment is 0.5 millimeter.Present embodiment is through the crimping mode with the operation that bushing pipe 1 is fixed in two pipe fittings 2 to be welded.
(embodiment 5, metal tube weld assembly and welding method thereof)
Fig. 7 has shown the 5th kind of specific embodiment of the present invention for a kind of structural representation of the 5th kind of structure of metal tube weld assembly among the present invention.
Present embodiment and embodiment 1 are basic identical, and difference is: after being equipped with protruding positive stop lug boss 21, two pipe fitting 2 butt joint formation to be welded seam 3 to be welded on the inwall of said two pipe fitting 2 welding ends to be welded, said bushing pipe 1 is between two positive stop lug boss 21.Positive stop lug boss 21 is to form through the inwall that cuts pipe fitting 2 welding ends tube chambers to be welded in the present embodiment.
(embodiment 6, metal tube weld assembly and welding method thereof)
Fig. 8 has shown the 6th kind of specific embodiment of the present invention for a kind of structural representation of the 6th kind of structure of metal tube weld assembly among the present invention.
Present embodiment and embodiment 7 are basic identical; Difference is: positive stop lug boss 21 is to carry out the reaming processing through the tube chamber of treating welded tube spare 2 welding ends to form in the present embodiment; For thin-wall stainless steel, the practical implementation of present embodiment operation is simple and easy to do than embodiment 5.
(embodiment 7, metal tube weld assembly and welding method thereof)
Fig. 9 has shown the 7th kind of specific embodiment of the present invention for a kind of structural representation of the 7th kind of structure of metal tube weld assembly among the present invention.
Present embodiment and embodiment 1 are basic identical, and difference is: the aperture of said two pipe fitting 2 welding ends place tube chambers to be welded is different, and said bushing pipe 1 is the two ends body and belong to the reduced pipe that pipe fitting 2 tube chambers to be welded match separately.
(embodiment 8, metal tube weld assembly and welding method thereof)
Present embodiment and embodiment 1 are basic identical, and difference is: the axial cross section shape of said seam 3 to be welded is arc shapeds.
(embodiment 9, metal tube weld assembly and welding method thereof)
Present embodiment and embodiment 1 are basic identical, and difference is: the axial cross section shape of said seam 3 to be welded is V-shapes.
(embodiment 10, metal tube weld assembly and welding method thereof)
Present embodiment and embodiment 1 are basic identical, and difference is: the axial cross section shape of said seam 3 to be welded is semi-circular shapes.
The foregoing description 1 to embodiment 10 has improved the joint welding manner; Said bushing pipe can play the effect of location two pipe fittings to be welded; Again because of covering in the inside line of seam to be welded; The inwall and the inner air tube of two pipe fitting to be welded commissures are completely cut off, thereby when carrying out gas shielded arc welding, need not to fill protective gas to the weld seam inside line; In addition, through this structure final weld strength is reached and two ends pipe fitting same intensity; So the foregoing description 1 to embodiment 10 can obviously improve weld strength with respect to traditional spigot-and-socket welding; And compare with traditional dock welding, because the insulating effect of bushing pipe is arranged, need not in pipe, to charge into protection gas, simultaneously owing to have bushing pipe, its tube wall is difficult for being burnt, and also can effectively prevent to hang the knurl phenomenon.
Obviously, the above embodiment of the present invention only be for clearly the present invention is described and is done for example, and be not to be qualification to embodiment of the present invention.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation or change.Here need not also can't give exhaustive to all embodiments.And these belong to conspicuous variation or the change that connotation of the present invention extends out and still belong to protection scope of the present invention.
Claims (10)
1. the welding method of a metal tube may further comprise the steps:
1. be inserted into an end of a bushing pipe (1) in the tube chamber of a pipe fitting to be welded (2) welding ends, and make the other end of this bushing pipe (1) stretch out this pipe fitting to be welded (2) welding ends;
2. the part body that stretches out this pipe fitting to be welded (2) welding ends to bushing pipe (1) is inserted in the tube chamber of another pipe fitting to be welded (2) welding ends, and the welding ends butt joint that makes these two pipe fittings to be welded (2) is to form seam to be welded (3);
3. seam to be welded (3) locate to weld make it form melting zone (4) thus the welding ends of two pipe fittings to be welded (2) is linked to each other.
2. according to the welding method of the said metal tube of claim 1, it is characterized in that: above-mentioned steps 1. in, said bushing pipe (1) is fixed in the tube chamber of pipe fitting to be welded (2) through close-fitting mode or crimping mode or adhesive means.
3. according to the welding method of the said metal tube of claim 1, it is characterized in that: the gap between the inwall of the outer wall of said bushing pipe (1) and its place pipe fitting to be welded (2) tube chamber is less than 1 millimeter; Said bushing pipe (1) inserts the axial length of the length of each pipe fitting to be welded (2) welding ends tube chamber more than or equal to melting zone (4); The wall thickness in said bushing pipe district is more than or equal to 0.3 millimeter.
4. according to the welding method of the said metal tube of claim 3, it is characterized in that: the gap between the inwall of the outer wall of said bushing pipe (1) and its place pipe fitting to be welded (2) tube chamber is less than 0.5 millimeter; The wall thickness in said bushing pipe district is more than or equal to 0.5 millimeter.
5. according to the welding method of the said metal tube of claim 4, it is characterized in that: when the radial section of said two pipe fitting to be welded (2) welding ends was identical, said bushing pipe (1) was to wait the external diameter pipe;
The internal diameter of said two pipe fitting to be welded (2) welding ends place tube chambers not simultaneously, said bushing pipe (1) is the two ends body and belong to the reduced pipe that pipe fitting to be welded (2) tube chamber matches separately.
6. the welding method of metal tube according to claim 1 is characterized in that: the axial cross section shape of said seam to be welded (3) is and perpendicular linearity of pipe fitting to be welded (2) central axis or oblique line shape or arc shaped or V-shape or semi-circular shape or the half-oval shaped that has angle with pipe fitting to be welded (2) central axis; Said pipe fitting to be welded (2) is a thin-wall stainless steel.
7. the welding method of metal tube according to claim 1; It is characterized in that: the inwall of at least one pipe fitting to be welded (2) welding ends is provided with protruding positive stop lug boss (21), and the end that said bushing pipe (1) inserts this pipe fitting to be welded (2) welding ends tube chamber is connected on this positive stop lug boss (21).
8. the welding method of metal tube according to claim 1; It is characterized in that: be equipped with protruding positive stop lug boss (21) on the inwall of said two pipe fitting to be welded (2) welding ends; After the butt joint of two pipe fittings to be welded (2) formed seam to be welded (3), said bushing pipe (1) was positioned between two positive stop lug boss (21).
9. metal tube weld assembly; Comprise two by welded tube spare; It is characterized in that: also comprise bushing pipe (1), the two ends of said bushing pipe (1) are inserted one separately by in the tube chamber of welded tube spare welding ends, and said two are had the melting zone (4) that forms through soldering by welded tube spare welding ends joint.
10. metal tube weld assembly according to claim 9 is characterized in that: said bushing pipe (1) is fixed on by in the tube chamber of welded tube spare through close-fitting mode or crimping mode or adhesive means or melting welding mode.
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| CN2012100068999A CN102554484A (en) | 2012-01-11 | 2012-01-11 | Metal pipe welding method and metal pipe welding assembly |
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| CN2012100068999A CN102554484A (en) | 2012-01-11 | 2012-01-11 | Metal pipe welding method and metal pipe welding assembly |
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| CN109798403A (en) * | 2019-02-25 | 2019-05-24 | 上海久坚加固科技股份有限公司 | With the steel pipe pipeline connecting method for pasting fibre reinforced composites substitution joint welding |
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| CN115090979A (en) * | 2022-05-17 | 2022-09-23 | 成都海光核电技术服务有限公司 | Brazing method of thick-wall copper pipe |
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| CN105155674A (en) * | 2013-07-25 | 2015-12-16 | 浙江精工钢结构集团有限公司 | Equal-strength connecting joint and equal-strength connecting method for components and plates made of different materials |
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| CN105014293A (en) * | 2015-07-17 | 2015-11-04 | 西安航空动力股份有限公司 | Welding lap joint structure and method for thin-wall pipes |
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| CN106670670A (en) * | 2016-11-25 | 2017-05-17 | 云南昆钢钢结构股份有限公司 | Stainless steel-carbon steel composite tube annular sealing welding method |
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| TWI650196B (en) * | 2017-02-07 | 2019-02-11 | 國立雲林科技大學 | Metal joint pipe and metal pipe joint method |
| CN107127470A (en) * | 2017-06-30 | 2017-09-05 | 北京首钢建设集团有限公司 | A kind of interface uses the pipe installation method for welding cage plate |
| CN108161267A (en) * | 2018-01-30 | 2018-06-15 | 舞阳钢铁有限责任公司 | A kind of welding method of hot environment pipe welding port pulling force gusset |
| CN110184860A (en) * | 2018-02-23 | 2019-08-30 | 洛阳科博思新材料科技有限公司 | The double-deck track switch Damping fastening lower bolster and its manufacturing method |
| CN108723535A (en) * | 2018-05-22 | 2018-11-02 | 山西太钢不锈钢股份有限公司 | A kind of core-spun yarn connection of broken lines method |
| CN109798403A (en) * | 2019-02-25 | 2019-05-24 | 上海久坚加固科技股份有限公司 | With the steel pipe pipeline connecting method for pasting fibre reinforced composites substitution joint welding |
| CN109822252A (en) * | 2019-03-29 | 2019-05-31 | 厦门市齐合汽车零部件有限公司 | A kind of pipeline is to spelling welding method |
| CN112648039A (en) * | 2019-10-11 | 2021-04-13 | 舍弗勒技术股份两合公司 | Camshaft phasing system |
| CN112377682A (en) * | 2020-10-28 | 2021-02-19 | 来兴兆 | APP steel pipeline for chemical corrosion prevention |
| CN112377682B (en) * | 2020-10-28 | 2022-11-01 | 山东佰盛能源科技有限公司 | APP steel pipeline for chemical corrosion prevention |
| CN115090979A (en) * | 2022-05-17 | 2022-09-23 | 成都海光核电技术服务有限公司 | Brazing method of thick-wall copper pipe |
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Owner name: ZHEJIANG TIANLI JIUTIAN PIPE INDUSTRY CO., LTD. Free format text: FORMER OWNER: RUAN JICHENG Effective date: 20131225 |
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Effective date of registration: 20131225 Address after: 325600, No. seventeen, No. 221, weft Road, Yueqing Economic Development Zone, Zhejiang, Zhejiang (B Electric Co., Ltd.) Applicant after: Zhejiang Tianli long Tian tube industry limited company Address before: Yueqing City, Zhejiang province 325600 Liushi Zhen Xi Xing Road No. 113 Applicant before: Ruan Jicheng |
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Application publication date: 20120711 |