CN100493799C - Method of welding the plug in type connection tube and the un-orthogonal crossed connection joint of the cylinder - Google Patents
Method of welding the plug in type connection tube and the un-orthogonal crossed connection joint of the cylinder Download PDFInfo
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- CN100493799C CN100493799C CNB2006100248619A CN200610024861A CN100493799C CN 100493799 C CN100493799 C CN 100493799C CN B2006100248619 A CNB2006100248619 A CN B2006100248619A CN 200610024861 A CN200610024861 A CN 200610024861A CN 100493799 C CN100493799 C CN 100493799C
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Abstract
The invention relates to a welding method for insertion nozzle and cylinder non-rectangular intersection connector, characterized in that saddle automatic submerged arc welding machine or deep and narrow groove welding torch is used; the groove shape is I-type, namely the angle of groove at two sides is O; the nozzle is set vertically and the cylinder is oblique; auxiliary tooling is used; the welding method from the lower part to middle part to upper part is adopted to achieve purposes of automatic submerged arc welding and control deformation. The merit of invention is that the influence of human factor to welding quality is decreased; the welding efficiency is improved greatly and the machining period is shortened; welding material can be saved notably; welding quality can be guaranteed in effect; and the machining cost is decreased greatly.
Description
Technical field
The present invention relates to a kind of set in nozzle and cylindrical shell on-right angle and intersect connector welding method, relate in particular to set in nozzle and cylindrical shell on-right angle Shanghai Communications University thickness connector welding method mutually, belong to welding technology field.
Background technology
As shown in Figure 1, set in nozzle and cylindrical shell on-right angle be the pipe cross schematic diagram mutually, and thickness joint in Shanghai Communications University is because the spatial form of welding point is special mutually with the cylindrical shell on-right angle for set in nozzle, and the technology that adopts generally all is manual electric arc weldings at present, particularly for the bigger cylindrical shell of thickness, make throat depth become big, if arc welding by hand, not only efficient is low, the welding rod utilization rate is low, welding quality is difficult to guarantee, and the groove processing difficulties, time-consuming taking a lot of work.
Summary of the invention
The purpose of this invention is to provide a kind of welding efficiency height, the set in nozzle that welding quality can guarantee and cylindrical shell on-right angle be the mechanical welding method of pipe cross mutually.
For realizing above purpose, technical scheme of the present invention provides a kind of set in nozzle and the cylindrical shell on-right angle intersects connector welding method, it is characterized in that, adopt shape of a saddle Lincoln weld welding machine and dark narrow groove welding torch, groove type is that the both sides bevel angle is 0 for the I type, takes over vertically and places, cylindrical shell tilts, utilize auxiliary mould, reach the purpose of Lincoln weld and control distortion, its method is:
The first step: will take in the cylindrical shell that inserts perforate with crane, at the outer appropriate liner plate of face down bonding of groove bottom cylindrical shell, at cylindrical shell with take over external circumferential evenly 10-12 of layouts are distortion-free and rigidly fix gusset and weld appropriate;
Second step: will assemble the crossing set in nozzle of appropriate on-right angle with crane and be placed into adapter following vertical being placed on the ground with cylindrical shell, cylindrical shell is last tilting, and bevel for welding up;
The 3rd step: at the lower port installment work platform and the interim stair of cylindrical shell;
The 4th step: the welding machine fixed platform is installed in the set in nozzle, is placed on the appropriate rest pad of dress weldering in advance, move on the welding machine fixed platform shape of a saddle welding machine fixing by workbench then;
The 5th step: welding bottom weld seam, adopt the downhand position, shape of a saddle welding machine rotates, welding gun moves along circular arc in groove, from the bottom, and striking and blow-out on liner plate, weld seam is made up of from being short to long arc section stack a section, until the inner surface that is welded to cylindrical shell;
The 6th step: welding machine and platform are moved up a step to the middle and lower part and fix by cucurbit and hoist cable integral body;
The 7th step: welding middle and lower part weld seam, welding manner is constant, divides left and right sides arc section weld seam stack to form, striking on liner plate, commissure blow-out on drum surface, otherwise or, be welded to welding gun and can not implement till the welding;
The 8th step: welding machine and platform are moved up a step to the middle and upper part and fix by cucurbit and hoist cable integral body;
The 9th step: welding middle and upper part weld seam, welding manner is constant, divides left and right sides arc section weld seam stack to form, striking on liner plate, commissure blow-out on drum surface, otherwise or, be welded to welding gun and can not implement till the welding;
The 6th, seven steps and the 8th, nine steps can repeat to implement several times when adapter and cylindrical shell tube wall are very thick, until the inner surface that is welded to cylindrical shell;
The tenth step: welding machine and platform are moved up a step to top and fix by cucurbit and hoist cable integral body;
The 11 step: welding top weld seam, welding manner is constant, commissure striking and blow-out on drum surface, weld seam is made up of a section arc section stack from growing to lacking, until having welded;
During welding, gage of wire: Φ 2-Φ 6mm, welding current 300-700A arc voltage 26-35V; Speed of welding 300-600mm/min;
The tenth step: shift out welding machine and platform by means of cucurbit and hoist cable, remove workbench and interim stair.
When taking over material with cylindrical shell and be low-alloy steel, adopt the infrared or combustion gas method of electricity to carry out preheating in the 4th step of method back joint area.
The present invention adopts the shape of a saddle or automatic welder(welding machine) by auxiliary mould, has implemented the automatic soldering technique method of special space shape large scale joint.Compare with manual electric arc welding commonly used at present, welding efficiency improves greatly, and can save welding material significantly, and bigger when taking over diameter especially, when the cylindrical shell wall thickness was thicker, this advantage was just very obvious.
Advantage of the present invention is to have reduced the influence degree of human factor to welding quality, has improved welding efficiency greatly, shortens the manufacturing cycle; Can significantly save welding material, welding quality can effectively be guaranteed, and greatly reduces manufacturing cost.
Description of drawings
Fig. 1 is a set in nozzle and the cylindrical shell on-right angle structural representation of pipe cross mutually;
Fig. 2 is welding bottom weld seam schematic diagram;
Fig. 3 is that A is to the welding schematic diagram;
Fig. 4 is welding middle part weld seam schematic diagram;
Fig. 5 is welding top weld seam schematic diagram.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples.
Embodiment:
Set in nozzle 2 sizes: interior diameter is that 1800mm, wall thickness are 280mm; Cylindrical shell 1 size: interior diameter is that 3400mm, wall thickness are 210mm; Welding method is:
As shown in Figure 2, be welding bottom weld seam schematic diagram, at first will take over 2 with crane inserts in the cylindrical shell 1 of perforate, assemble appropriate on request, at the outer appropriate liner plate 13 of face down bonding of groove bottom cylindrical shell, then at cylindrical shell 1 with take over 2 external circumferential evenly 12 of layouts are distortion-free and rigidly fix gusset 14 and weld appropriate;
Appropriate on-right angle be will assemble again with crane then and set in nozzle and cylindrical shell workpiece intersected by orientation shown in Figure 2 placement, promptly taking over 2 vertically is being placed on the ground down, cylindrical shell 1 is last tilting, after workpiece is placed and is fixed, at cylindrical shell 1 lower port installment work platform 7 and interim stair 8, lifting welding machine fixed platform 3 is advanced to take in 2, be placed in advance on the appropriate rest pad 15 of dress weldering, the MZ9-600-2B saddle-shape base submerged arc welding machine 4 of outsourcing is by workbench 7 with adorn appropriate interim cucurbit 10 in advance and be lifted on the welding machine fixed platform 3 then.
Take over and the material of cylindrical shell when being low-alloy steel, adopt in welding front connector zone electric infraredly to be preheated to 200～230 ℃.
Begin to weld the bottom weld seam after being preheating to temperature, gage of wire 4mm during welding, adopts the downhand position, shape of a saddle welding machine 4 rotates, welding gun 5 moves along circular arc in groove 12, as shown in Figure 3, and at first from the bottom, incipient stage is striking and blow-out on liner plate 13, weld seam is made up of from being short to long arc section stack a section, until the inner surface that is welded to cylindrical shell, and welding current 500A; Arc voltage 30V; Speed of welding 480mm/min;
As shown in Figure 4, be welding middle part weld seam schematic diagram, then by means of cucurbit 10 and hoist cable 11, with welding machine fixed platform 3, the saddle-shape base submerged arc welding machine 4 integral body step that moves up, butt joint middle and lower part weld seam is implemented welding, and welding manner is constant, divide left and right sides arc section weld seam stack to form, in liner plate striking about in the of 13, commissure blow-out on drum surface is welded to welding gun and can not implements till the welding;
Welding machine 4 and platform 3 are moved up a step to the middle and upper part and fixing by cucurbit 10 and hoist cable 11 integral body, welding middle and upper part weld seam, welding manner is constant, divide left and right sides arc section weld seam stack to form, in liner plate 13 upper and lower strikings, commissure blow-out on drum surface is welded to welding gun and can not implements till the welding; As shown in Figure 5, be welding top weld seam schematic diagram, welding manner is constant, commissure striking and blow-out on drum surface, weld seam is made up of a section arc section stack from growing to lacking, until having welded, shift out welding machine 4 and platform 3 by means of cucurbit 10 and hoist cable 11, remove workbench 7 and interim stair 8.
After having welded, shift out welding machine 4 and platform 3, the whole piece weld seam is carried out after-baking and postwelding advance the furnace treatment reason.Heat treatment is cut off anti-deformation and is rigidly fixed gusset 14 after finishing, and removes liner plate.
Claims (2)
1. set in nozzle and cylindrical shell on-right angle intersect connector welding method, it is characterized in that, adopt shape of a saddle Lincoln weld welding machine or dark narrow groove welding torch, groove type is that the both sides bevel angle is 0 for the I type, take over vertical the placement, cylindrical shell tilts, and utilizes auxiliary mould, reach the purpose of Lincoln weld and control distortion, its method is:
The first step: will take over (2) with crane and insert in the cylindrical shell of perforate (1), at the outer appropriate liner plate of face down bonding (13) of groove bottom cylindrical shell, arrange evenly that in cylindrical shell (1) and adapter (2) external circumferential 10-12 distortion-freely rigidly fix gusset (14) and weld appropriate;
Second step: will assemble the crossing set in nozzle (2) of appropriate on-right angle with crane and be placed into adapter (2) following vertical being placed on the ground with cylindrical shell (1), cylindrical shell (1) is last tilting, and bevel for welding up;
The 3rd step: at the lower port installment work platform (7) and the interim stair (8) of cylindrical shell (1);
The 4th step: welding machine fixed platform (3) is installed in being placed on the appropriate rest pad (15) of dress weldering in advance in the set in nozzle (2), by workbench (7) shape of a saddle welding machine (4) is moved to welding machine fixed platform (3) then and go up fixing;
The 5th step: welding bottom weld seam, adopt the downhand position, shape of a saddle welding machine (4) rotates, welding gun (5) moves along circular arc in groove (12), from the bottom, in upper and lower striking of liner plate (13) and blow-out, weld seam is made up of from being short to long arc section stack a section, until the inner surface that is welded to cylindrical shell;
The 6th step: welding machine (4) and platform (3) are also fixed to the middle and lower part by cucurbit (10) and hoist cable (11) the integral body step that moves up;
The 7th step: welding middle and lower part weld seam, welding manner is constant, divides left and right sides arc section weld seam stack to form, and in the upper and lower striking of liner plate (13), commissure blow-out on drum surface is welded to welding gun and can not implements till the welding;
The 8th step: welding machine (4) and platform (3) are also fixed to the middle and upper part by cucurbit (10) and hoist cable (11) the integral body step that moves up;
The 9th step: welding middle and upper part weld seam, welding manner is constant, divides left and right sides arc section weld seam stack to form, and in the upper and lower striking of liner plate (13), commissure blow-out on drum surface is welded to welding gun and can not implements till the welding; The 6th, seven steps and the 8th, nine steps can repeat to implement several times when adapter and cylindrical shell tube wall are very thick;
The tenth step: welding machine (4) and platform (3) are also fixed to top by cucurbit (10) and hoist cable (11) the integral body step that moves up;
The 11 step: welding top weld seam, welding manner is constant, commissure striking and blow-out on drum surface, weld seam is made up of a section arc section stack from growing to lacking, until having welded;
Gage of wire: Φ 2-Φ 6mm, welding current 300-700A arc voltage 26-35V; Speed of welding 300-600mm/min;
The tenth step: shift out welding machine (4) and platform (3) by means of cucurbit (10) and hoist cable (11), remove workbench (7) and interim stair (8).
2. set in nozzle according to claim 1 and cylindrical shell on-right angle intersect connector welding method, it is characterized in that, when taking over (2) material and be low-alloy steel, adopt the infrared or combustion gas method of electricity to carry out preheating in the 4th step of method back joint area with cylindrical shell (1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100248619A CN100493799C (en) | 2006-03-20 | 2006-03-20 | Method of welding the plug in type connection tube and the un-orthogonal crossed connection joint of the cylinder |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2006100248619A CN100493799C (en) | 2006-03-20 | 2006-03-20 | Method of welding the plug in type connection tube and the un-orthogonal crossed connection joint of the cylinder |
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| CN101041200A CN101041200A (en) | 2007-09-26 |
| CN100493799C true CN100493799C (en) | 2009-06-03 |
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| CN102029473B (en) * | 2009-09-25 | 2013-01-23 | 上海宝钢工业检测公司 | Aerological welding method of steel sleeve |
| CN102390002B (en) * | 2011-03-30 | 2014-04-09 | 上海锅炉厂有限公司 | Automatic submerged-arc welding method for large insertion-type adapting pipe on cone |
| 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 |
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| CN102699551B (en) * | 2012-06-29 | 2015-03-04 | 四川蓝星机械有限公司 | Method for welding oblique inserted pipe of large chemical equipment |
| CN104741812B (en) * | 2015-04-08 | 2016-10-05 | 上海电气核电设备有限公司 | The adapter of a kind of minor diameter thin wall oblique cutting and the welding method of overlay cladding |
| CN105382438B (en) * | 2015-12-24 | 2017-11-10 | 哈尔滨锅炉厂有限责任公司 | New inclining tube welding by both sides groove and welding method |
| CN105921862B (en) * | 2016-06-27 | 2018-07-03 | 中国葛洲坝集团机械船舶有限公司 | A kind of soldering method suitable for steel pipe and steel pipe oblique combination forming |
| CN106881539B (en) * | 2017-03-31 | 2022-09-09 | 哈电集团（秦皇岛）重型装备有限公司 | Pressure container |
| CN107020468A (en) * | 2017-05-31 | 2017-08-08 | 石河子大学 | A kind of welding control system of shape of a saddle space curve |
| CN109676276B (en) * | 2018-12-27 | 2023-08-25 | 哈电集团（秦皇岛）重型装备有限公司 | Welding method of non-centripetal pipe and thin-wall stainless steel pressure vessel |
| CN112025168B (en) * | 2020-08-27 | 2022-07-05 | 上海宝冶集团有限公司 | Positioning device for fixing inclined insertion pipe of cylindrical furnace shell and using method of positioning device |
| CN113798788B (en) * | 2021-09-01 | 2023-07-11 | 渤海造船厂集团有限公司 | One-step forming method for large-thickness small-curvature high-strength steel cylinder without allowance |
| CN115430891B (en) * | 2022-09-28 | 2023-06-02 | 伯朗特机器人股份有限公司 | Intersecting line double-pulse MIG welding method |
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