CN103286466B - Multi-nozzle oppositely-arranged type gasifier nozzle mounting flange installing and welding method - Google Patents
Multi-nozzle oppositely-arranged type gasifier nozzle mounting flange installing and welding method Download PDFInfo
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Abstract
The invention discloses a multi-nozzle oppositely-arranged type gasifier nozzle mounting flange installing and welding method. The method includes the following steps: machining a nozzle mounting flange, selecting a gasifier assembly cylinder section where the nozzle mounting flange will be installed, installing an anti-deformation tool, machining a tube hole, where the nozzle mounting flange will be installed, in the assembly cylinder section, enabling the nozzle mounting flange to be matched with the assembly cylinder section, forming a fan-shaped groove with a big outside and a small inside between the nozzle mounting flange and the assembly cylinder section, enabling the inner bottom end of the fan-shaped groove to be in a semi-circular arc shape, enabling a location straight section to be arranged between the bottom and the inner wall of the assembly cylinder section, enabling the location straight section to have a 0.3-0.5mm fit clearance during assembling, adopting a 7-shaped connecting piece to connect and fix the nozzle mounting flange and the assembly cylinder section, detecting positional accuracy of four nozzles of the nozzle mounting flange, and welding the groove. By means of the mounting flange installing and welding method, the finally-obtained nozzle mounting flange is high in accuracy, good in quality and good in anti-deformation effect.
Description
Technical field
The present invention relates to a kind of flange assembling and welding process, particularly relate to a kind of multi-nozzle opposition gasifier burner mounting flange assembling and welding process, belong to welding technology field.
Background technology
In multi-nozzle opposed structure gasification furnace, the required precision of burner mounting flange is very high, common bevel for welding form conventional in current industry, anti-deformation measure and means, welding method etc. are all difficult to ensure the assembling of above-mentioned flange, further, the corresponding requirements of flange precision is after welding difficult to meet.
At present, in the product of homogeneous structure, the pore that above-mentioned flange is corresponding normally adopts manual line to determine the size in position and hole, adopts gas cutting+polishing or machine-tooled method processing pore.In this mode, assembling due to flange does not have effective location measure, and is only adopt common and easy anti-deformation tool to prevent the welding deformation of flange, so, the flange of institute's welding equipment is due to the factor of assembly precision and welding deformation, and final deviation when being formed is all larger usually.
Therefore, for the high-precision requirement of burner mounting flange in multiinjector structure gasification furnace, above-mentioned assembling and welding method and the conventional means taked and measure are all difficult to the requirement meeting flange assembly precision and welding quality.
Summary of the invention
The object of the invention is to: the invention provides a kind of multi-nozzle opposition gasifier burner mounting flange assembling and welding process, the design feature of combination product, select unique groove type, start with from the machining of drilling precision corresponding to burner mounting flange, assembly precision, weld industry, manufacturing process, detection means aspect, solve that flange assembly precision is not easy to be guaranteed, welding process is held yielding problem, thus can effectively be solved above-mentioned problems of the prior art.
The object of the invention is realized by following technical proposals: a kind of multi-nozzle opposition gasifier burner mounting flange assembling and welding process, comprises following welding equipment step: comprise following welding equipment step:
The first step, processing burner mounting flange, stays 3-6mm secondary fine allowance at the inside and outside circle of burner mounting flange, stays 5-15mm secondary fine allowance at the end face of burner mounting flange;
Second step, chooses the gasification furnace assembling shell ring of burner mounting flange to be installed, pre-stroke flange rigging position line on assembling shell ring, and installs the relative both sides dress anti-deformation tool of burner mounting flange place position of mounting hole 80-200mm in distance;
3rd step, the pore of burner mounting flange to be installed on process and assemble shell ring: first, vertical car is processed flat cylindrical shell both ends of the surface, and 5-15mm secondary operations surplus is respectively stayed at two ends; Then, centering the position of calibration determination same plane, circumferentially four pores on boring and milling machine; Finally, the shell ring of dress burner mounting flange processes assembling pore, burner mounting flange is coordinated with assembling shell ring, form the little fan-shaped groove of an outer imperial palace between, the interior bottom of described fan-shaped groove is semicircular arc, bottom is provided with location straight section between assembling shell ring inwall, locates the fit clearance that straight section has 0.3-0.5mm during assembling;
4th step, adopts " ┓ " burner mounting flange and assembling shell ring be connected and fixed, and adopt space laser measuring system to detect the positional precision of burner mounting flange four burners by shape connector;
5th step, bevel for welding.
As preferably, after the 5th step bevel for welding, after burner mounting flange welds with shell ring, carry out hidden lino removal; Then on digital-control boring-milling machine, process burner mounting flange inside and outside circle and end surplus.
As preferably, the welding process of burner mounting flange and assembling shell ring groove is: the bottoming of outer side weld manual welding, and removes connector after manual welding to 5 ~ 10mm height, and adopt saddle automatic welding or manual welding, welding process symmetry is carried out; Be specially successively by four flanges circumferentially sequence notation be A flange, B flange, C flange and D flange, namely welding C flange symmetrical is with it transferred to after first outer for A flange side weld being welded to 1/2 of fan-shaped groove depth, namely welding B flange adjacent is with it transferred to after outer for C flange side weld is welded to 1/2 of fan-shaped groove depth, namely welding D flange symmetrical is with it transferred to after the outer side weld of B flange is welded to 1/2 of fan-shaped groove depth, D flange is disposable by full for outer side weld weldering, finally more successively by full for the residue weld seam weldering of the outside of B flange, A flange and C flange; Outer side weld is soldered and carries out back chipping removal to inwall positioning straight section afterwards, and polish bevel for welding, carries out 100% Magnetic testing or Liquid penetrant testing, carry out manual welding after guaranteeing do not have crackle by the welding sequence identical with outer side weld to inwall weld seam to groove face.
As preferably, process and assemble shell ring on numerical control vertical lathe, take both ends of the surface as benchmark, in conjunction with the measurement size of burner mounting flange, the processing of each to burner mounting flange inside and outside circle, end face, sealing surface and screw thread etc. portion puts in place after centering by digital-control boring-milling machine, burner mounting flange and cylindrical shell machine and detect qualified after and all the other cylindrical shells assemble.
As preferably, described anti-deformation tool comprises the Anti-deformation support ring flat-plate be located in assembling shell ring, and ring flat-plate cylindrical welds with shell ring, establishes a lacing wire of vertical bar shaped, establish No. two lacing wires between ring flat-plate side and cylinder inboard wall inside ring flat-plate.
As preferably, in second step, the method choosing the gasification furnace assembling shell ring of burner mounting flange to be installed is: intercept on gasification furnace housing stack shell for installing the shell ring of burner mounting flange, intercepted length is 2000mm ~ 3500mm, assemble until burner mounting flange and this shell ring, process and detect qualified after, then to assemble with all the other cylindrical shells.
As preferably, the length L=20-50mm of described location straight section.
As preferably, it is 0.3-0.5mm that burner mounting flange and housing locate the monolateral size of fit-up gap of staying of straight section.
As preferably, the radius R=5-15mm of the bottom semicircular arc of described fan-shaped groove, fan-shaped angle a=8-20 degree.
Compared with prior art, beneficial effect of the present invention is embodied in: the assembling and welding process adopting mounting flange of the present invention, and the precision finally obtaining burner mounting flange is high, quality good, be embodied in following some:
1). burner mounting flange is reasonable, practical with the bevel for welding form structure of assembling shell ring, and assembling is simple, registration, anti-deformation are effective;
2). anti-deformation tool structure is simply applicable, and anti-deformation is effective, and frock also can repeatedly use, cost-saved;
3). the assembling shell ring of burner mounting flange and correspondence adopts high-precision numerical control device machine-shaping, and dimensional accuracy is high;
4). reasonably welding sequence and welding method, decreases the distortion of welding and causing as much as possible.
Accompanying drawing explanation
Fig. 1 is the structural representation that burner mounting flange of the present invention and gasification furnace assemble when shell ring assembles;
Fig. 2 is the I place enlarged diagram in Fig. 1;
Fig. 3 is the parameter indexing figure of Fig. 2;
In Fig. 4 burner mounting flange welding equipment process use the schematic diagram of Anti-deformation support;
Fig. 5 burner mounting flange and the first stage of installing cylindrical shell welding process;
Fig. 6 burner mounting flange and the second stage of installing cylindrical shell welding process;
Fig. 7 burner mounting flange and the phase III of installing cylindrical shell welding process;
Fig. 8 burner mounting flange and the fourth stage of installing cylindrical shell welding process.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
All features disclosed in this description, or the step in disclosed all methods or process, except the speciality mutually repelled and/or step, all can combine by any way, unless specifically stated otherwise, all can be replaced by other equivalences or the alternative features with similar object, namely, unless specifically stated otherwise, an embodiment in a series of equivalence of each feature or similar characteristics.
A kind of multi-nozzle opposition gasifier burner mounting flange assembling and welding process, comprises following welding equipment step:
The first step, processing burner mounting flange, respectively stays 5mm secondary fine allowance at the inside and outside circle of burner mounting flange, stays 10mm secondary fine allowance at the end face of burner mounting flange.
Second step, choose the gasification furnace assembling shell ring of burner mounting flange to be installed, its choosing method is: intercept out by one section of stack shell gasification furnace housing stack shell being installed burner mounting flange, length is 2300mm.The selection principle of shell ring is the physical length determining required shell ring according to the length of gasification furnace housing, the deployment scenarios of adapter and roll bending capabilities might, usually choosing length is that 2000mm ~ 3500mm scope is comparatively suitable, assemble until burner mounting flange and this shell ring, process and detect qualified after assembling with all the other cylindrical shells.
Pre-stroke flange rigging position line on assembling shell ring, and the relative both sides dress anti-deformation tool installing burner mounting flange place position of mounting hole 80-200mm in distance; As shown in Figure 4, described anti-deformation tool comprises the Anti-deformation support ring flat-plate 3 be located in assembling shell ring 1, and ring flat-plate 3 cylindrical welds with shell ring, establishes a lacing wire 4 of vertical bar shaped, establish No. two lacing wires 8 between ring flat-plate side and cylinder inboard wall inside ring flat-plate 3.Ring flat-plate is δ 60 ~ 80mm, width 500mm, the i.e. doughnut-shaped steel plate of R1-R2=500mm, and ring flat-plate cylindrical welds appropriate with assembling shell ring, and endoporus and both sides all adopt lacing wire connect and weld.
3rd step, as shown in Figure 1, Figure 2, Figure 3 shows, the pore of burner mounting flange to be installed on process and assemble shell ring 1: first, vertical car is processed flat cylindrical shell both ends of the surface, and 15mm secondary operations surplus is respectively stayed at two ends; Then, centering the position of calibration determination same plane, circumferentially four pores on boring and milling machine; Finally, the shell ring of dress burner mounting flange processes assembling pore, make burner mounting flange 2 coordinate with assembling shell ring 1 and to leave fit-up gap 5, the size of fit-up gap is 0.3-0.5mm; Between burner mounting flange 2 and assembling shell ring 1, form the little fan-shaped groove 6 of an outer imperial palace, the interior bottom of described fan-shaped groove 6 is semicircular arc, the radius R=5-15mm of described semicircular arc, fan-shaped angle a=8-20 degree; Bottom is provided with location straight section 7 between assembling shell ring 1 inwall; The length L=20-50mm of described location straight section 7.
4th step, adopts " ┓ " burner mounting flange and assembling shell ring be connected and fixed, and adopt space laser measuring system to detect the positional precision of burner mounting flange four burners by shape connector.
5th step, bevel for welding, the welding process of burner mounting flange and assembling shell ring is: the bottoming of outer side weld manual welding, and remove connector after manual welding to 5 ~ 10mm height, then, adopt saddle automatic welding or manual welding, welding process symmetry is carried out, be specially is A flange by four circumference of flange sequence notations successively, B flange, C flange and D flange, namely welding C flange symmetrical is with it transferred to after first outer for A flange side weld being welded to 1/2 of fan-shaped groove depth, namely welding B flange adjacent is with it transferred to after outer for C flange side weld is welded to 1/2 of fan-shaped groove depth, namely welding D flange symmetrical is with it transferred to after the outer side weld of B flange is welded to 1/2 of fan-shaped groove depth, D flange is disposable by full for outer side weld weldering, last more successively by B flange, the outside residue weld seam weldering of A flange and C flange is full, outer side weld is soldered and carries out back chipping removal to inwall positioning straight section afterwards, and polish bevel for welding, carries out 100% Magnetic testing or Liquid penetrant testing, carry out manual welding after guaranteeing do not have crackle by the welding sequence identical with outer side weld to inwall weld seam to groove face.Weld seam all welds appropriate and carry out overall hidden lino removal after Non-Destructive Testing is qualified, after product cools and removes anti-deformation tool, adopt space laser measuring system to detect the deformation of four burners.
6th step, carries out hidden lino removal after burner mounting flange welds with shell ring.
7th step, digital-control boring-milling machine is processed burner mounting flange inside and outside circle and end surplus.
Process and assemble shell ring on numerical control vertical lathe, take both ends of the surface as benchmark, in conjunction with the measurement size of burner mounting flange, the processing of each to burner mounting flange inside and outside circle, end face, sealing surface and screw thread etc. portion puts in place by drawing dimensional requirement after centering by digital-control boring-milling machine, burner mounting flange and cylindrical shell machine and detect qualified after and all the other cylindrical shells assemble.
Embodiment 1
Product selected by this example is multiple-nozzle contraposition type coal water slurry gasification stove, its housing and burner mounting flange specification as follows:
Gasification furnace: housing inner diameter φ 3600mm, wall thickness 112mm, is about 25000mm;
Burner mounting flange: internal diameter φ 560mm, maximum gauge is 154 mm, flange height 683.8mm;
Flange and housing assembling place external diameter are φ 1020mm.
The assembly precision of burner mounting flange requires as follows:
1. four burner mounting flanges require uniform in 90 ° at grade, and plane deviation is not more than 2mm;
2. every two relative burner mounting flange coaxiality deviations are not more than 3mm;
3. the flange face after welding equipment and the perpendicularity deviation of its axis are not more than 1mm;
4. the perpendicularity deviation of flange axis and housing axis is not more than 2mm (is 2 ' 51 ") after being converted into angle;
5. it (is 2 ' 51 ") after being converted into angle that the perpendicularity deviation between two pairs of burner axis is not more than 2mm;
Concrete implementation step and the result as follows:
1) first step: processing burner mounting flange.
Burner mounting flange inside and outside circle is monolateral respectively stays 6mm secondary fine allowance, and 12mm secondary fine allowance is stayed in right side.
2) second step: the cylindrical shell that processing and burner mounting flange match.
Choose a shaping best joint cylindrical shell L=2300mm, as the assembling shell ring of burner mounting flange, after the appropriate anti-deformation tool of about 150mm region, pore both sides welding equipment, cylindrical shell two ends are processed concordant on numerical control vertical lathe, 10mm secondary operations surplus is respectively stayed at two ends, afterwards centering go out the assembling pore of 4 burner mounting flanges by divided edge structure and dimensioned on digital-control boring-milling machine.
3) the 3rd step: assembling burner mounting flange and cylindrical shell.
Adopt ┓ shape connector to be connected and fixed after the assembling of burner mounting flange, and adopt space laser measuring system to detect the positional precision of four burners, after determining to meet the demands, weld connector.
4) the 4th step: welding burner mounting flange and cylindrical shell.
4 burner mounting flanges are labeled as respectively A flange-B flange-C flange-D flange, weld in the following order:
1. the symmetrical C flange of welding is namely transferred to after outer for A flange side weld being welded to 40mm height;
2. the adjacent B flange of welding is namely transferred to after the outer side weld of C flange is welded to 40mm height;
3. the symmetrical D flange of welding is namely transferred to after the outer side weld of B flange is welded to 40mm height, connector is removed after the D flange outside weld finally welded is welded to 40mm height, saddle automatic welding is adopted to continue full for outside weld weldering, as shown in Figure 5, Fig. 5 is burner mounting flange and the first stage of installing cylindrical shell welding process;
4. remove the ┓ shape connector of all the other 3 flanges, the order of pressing B flange-C flange-A flange successively adopts saddle automatic welding by full for the outer side weld weldering of four flanges, and as shown in Figure 6, Fig. 6 is burner mounting flange and the second stage of installing cylindrical shell welding process;
5. polish groove by after the 40mm straight section back chipping of inner side, as shown in Figure 7, Fig. 7 is burner mounting flange and the phase III of installing cylindrical shell welding process.And 100% Magnetic testing or Liquid penetrant testing are carried out to groove face, guarantee not have after the defects such as crackle by the order of above-mentioned outer side weld and the weld joint on inner side of method manual welding appropriate burner mounting flange and housing and former reserved 40mm straight section positioning area, as shown in Figure 8, Fig. 8 is burner mounting flange and the fourth stage of installing cylindrical shell welding process.
5) the 5th step: carry out hidden lino removal after burner mounting flange welds with shell ring.
The weld seam of burner mounting flange and cylindrical shell carries out overall hidden lino removal after Non-Destructive Testing is qualified.
6) the 6th step: the positional precision detecting each burner mounting flange.
Remove anti-deformation tool after the cooling of burner mounting flange assembly and adopt space laser measuring system to detect the positional precision of four burner mounting flanges.
1. the deviations from planarity of four burner mounting flange axis place planes is 0.6173 mm;
2. two symmetrical burner mounting flange coaxiality deviations are as follows respectively: A flange-C flange is: 0.8309mm; B flange-D flange is: 1.2855mm;
3. because burner mounting flange adopts digital-control boring-milling machine processing, therefore the angle of flange face and its axis is 90 °, and perpendicularity is very good, does not occur deviation;
4. the angle of flange axial plane and housing axis is 89 ° 55 ' 43 ", deviation is 4 ' 17 ";
5. the angle between two pairs of burner axis is 90 ° 0 ' 35 ", deviation is 0 ' 35 ";
From measurement result, except the perpendicularity of flange axis and housing axis is overproof, measurement result deviation 4 ' 17 ", be greater than required 2 ' 51 " and, all the other precision of burner mounting flange meet the demands all; And the allowance of the monolateral 6mm of flange inside and outside circle that reserves and end face 12mm be enough to ensure the final fine finishining of flange after the perpendicularity of its axis and housing axis meet the demands.
7) the 7th step: the final fine finishining of burner mounting flange.
Cylindrical shell two ends process by required size and groove type by numerical control vertical lathe, take both ends of the surface as benchmark, the processing of each to burner mounting flange inside and outside circle, end face and sealing surface, screw thread etc. portion also puts in place by drawing dimensional requirement in conjunction with above-mentioned measured data by centering on digital-control boring-milling machine, burner mounting flange and cylindrical shell machine and detect qualified after can assemble with other cylindrical shells of gasification furnace.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a multi-nozzle opposition gasifier burner mounting flange assembling and welding process, is characterized in that: comprise following welding equipment step:
The first step, processing burner mounting flange, respectively stays 3-6mm secondary fine allowance at the inside and outside circle of burner mounting flange, stays 5-15mm secondary fine allowance at the end face of burner mounting flange;
Second step, chooses the gasification furnace assembling shell ring of burner mounting flange to be installed, pre-stroke flange rigging position line on assembling shell ring, and installs the relative both sides dress anti-deformation tool of burner mounting flange place position of mounting hole 80-200mm in distance;
3rd step, the pore of burner mounting flange to be installed on process and assemble shell ring: first, vertical car is processed flat cylindrical shell both ends of the surface, and 5-15mm secondary operations surplus is respectively stayed at two ends; Then, centering the position of calibration determination same plane, circumferentially four pores on boring and milling machine; Finally, the shell ring of dress burner mounting flange processes assembling pore, burner mounting flange is coordinated with assembling shell ring, form the little fan-shaped groove of an outer imperial palace between, the interior bottom of described fan-shaped groove is semicircular arc, bottom is provided with location straight section between assembling shell ring inwall, locates the fit clearance that straight section has 0.3-0.5mm during assembling;
4th step, adopts " ┓ " burner mounting flange and assembling shell ring be connected and fixed, and adopt space laser measuring system to detect the positional precision of burner mounting flange four burners by shape connector;
5th step, bevel for welding.
2. multi-nozzle opposition gasifier burner mounting flange assembling and welding process as claimed in claim 1, is characterized in that: after the 5th step bevel for welding, carry out hidden lino removal after burner mounting flange welds with shell ring; Then on digital-control boring-milling machine, process burner mounting flange inside and outside circle and end surplus.
3. multi-nozzle opposition gasifier burner mounting flange assembling and welding process as claimed in claim 1, it is characterized in that: the welding process of burner mounting flange and assembling shell ring groove is: the bottoming of outer side weld manual welding, and remove connector after manual welding to 5 ~ 10mm height, adopt saddle automatic welding or manual welding, welding process symmetry is carried out; Be specially successively by four flanges circumferentially sequence notation be A flange, B flange, C flange and D flange, namely welding C flange symmetrical is with it transferred to after first outer for A flange side weld being welded to 1/2 of fan-shaped groove depth, namely welding B flange adjacent is with it transferred to after outer for C flange side weld is welded to 1/2 of fan-shaped groove depth, namely welding D flange symmetrical is with it transferred to after the outer side weld of B flange is welded to 1/2 of fan-shaped groove depth, D flange is disposable by full for outer side weld weldering, finally more successively by full for the residue weld seam weldering of the outside of B flange, A flange and C flange; Outer side weld is soldered and carries out back chipping removal to inwall positioning straight section afterwards, and polish bevel for welding, 100% Magnetic testing or Liquid penetrant testing are carried out to groove face, after guaranteeing there is no crackle, by the welding sequence identical with outer side weld, manual welding is carried out to inwall weld seam.
4. multi-nozzle opposition gasifier burner mounting flange assembling and welding process as claimed in claim 1, it is characterized in that: process and assemble shell ring on numerical control vertical lathe, take both ends of the surface as benchmark, in conjunction with the measurement size of burner mounting flange, burner mounting flange inside and outside circle, end face, sealing surface and screw thread each component processing put in place after centering by digital-control boring-milling machine, burner mounting flange and cylindrical shell machine and detect qualified after and all the other cylindrical shells assemble.
5. multi-nozzle opposition gasifier burner mounting flange assembling and welding process as claimed in claim 1, it is characterized in that: described anti-deformation tool comprises the Anti-deformation support ring flat-plate be located in assembling shell ring, ring flat-plate cylindrical welds with shell ring, inside ring flat-plate, establish a lacing wire of vertical bar shaped, between ring flat-plate side and cylinder inboard wall, establish No. two lacing wires.
6. multi-nozzle opposition gasifier burner mounting flange assembling and welding process as claimed in claim 1, it is characterized in that: in second step, the method choosing the gasification furnace assembling shell ring of burner mounting flange to be installed is: intercept on gasification furnace housing stack shell for installing the shell ring of burner mounting flange, intercepted length is 2000mm ~ 3500mm, assemble until burner mounting flange and this shell ring, process and detect qualified after, then to assemble with all the other cylindrical shells.
7. multi-nozzle opposition gasifier burner mounting flange assembling and welding process as claimed in claim 1, is characterized in that: the length L=20-50mm of described location straight section.
8. multi-nozzle opposition gasifier burner mounting flange assembling and welding process as claimed in claim 1, is characterized in that: it is 0.3-0.5mm that burner mounting flange and housing locate the monolateral size of fit-up gap of staying of straight section.
9. multi-nozzle opposition gasifier burner mounting flange assembling and welding process as claimed in claim 1, is characterized in that: the radius R=5-15mm of the bottom semicircular arc of described fan-shaped groove, fan-shaped angle a=8-20 degree.
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| CN201310229173.6A CN103286466B (en) | 2013-06-09 | 2013-06-09 | Multi-nozzle oppositely-arranged type gasifier nozzle mounting flange installing and welding method |
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| CN115351451B (en) * | 2022-08-18 | 2024-06-25 | 东方电气集团东方锅炉股份有限公司 | Welding method for nozzle connecting pipe of side wall of multi-nozzle gasifier |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101412157A (en) * | 2008-11-21 | 2009-04-22 | 中信重工机械股份有限公司 | Control method of large-sized mining grinding mill end flange welding deformation |
| CN102380690A (en) * | 2011-03-30 | 2012-03-21 | 上海锅炉厂有限公司 | Method for controlling welding deformation of joint between inserted large inclined tube and barrel |
| CN102554481A (en) * | 2010-12-29 | 2012-07-11 | 中国电子科技集团公司第十八研究所 | Method for welding thermal battery casing |
| CN102794577A (en) * | 2012-08-31 | 2012-11-28 | 哈尔滨工业大学 | Welding experiment chamber for simulating medium-pressure liquid or gas environment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20020170940A1 (en) * | 2001-05-21 | 2002-11-21 | Takashi Kazama | Welded tube manufacturing apparatus and welded tube internal surface bead cutting apparatus |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101412157A (en) * | 2008-11-21 | 2009-04-22 | 中信重工机械股份有限公司 | Control method of large-sized mining grinding mill end flange welding deformation |
| CN102554481A (en) * | 2010-12-29 | 2012-07-11 | 中国电子科技集团公司第十八研究所 | Method for welding thermal battery casing |
| CN102380690A (en) * | 2011-03-30 | 2012-03-21 | 上海锅炉厂有限公司 | Method for controlling welding deformation of joint between inserted large inclined tube and barrel |
| CN102794577A (en) * | 2012-08-31 | 2012-11-28 | 哈尔滨工业大学 | Welding experiment chamber for simulating medium-pressure liquid or gas environment |
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