CN102350568A - Method for preventing tube sheets from deforming during overlaying process - Google Patents
Method for preventing tube sheets from deforming during overlaying process Download PDFInfo
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- CN102350568A CN102350568A CN2011102878854A CN201110287885A CN102350568A CN 102350568 A CN102350568 A CN 102350568A CN 2011102878854 A CN2011102878854 A CN 2011102878854A CN 201110287885 A CN201110287885 A CN 201110287885A CN 102350568 A CN102350568 A CN 102350568A
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Abstract
The invention discloses a method for preventing tube sheets from deforming during an overlaying process. The method comprises the following steps: (1) up and down overlapping two tube sheets in same specification, arranging sheet surfaces of to-be-overlaid tube sheets outwards, nesting a cylindrical tool assembly matched with the tube sheets in diameter on peripheral side walls of the two tube sheets, and respectively firmly welding the upper and lower ends of the cylindrical tool assembly and the upper and lower tube sheets together; (2) overlaying the sheet surfaces of to-be-overlaid tube sheets, wherein technical demands of overlaying layers of the upper and lower tube sheets are identical; and (3) at 580 DEG C+/-10 DEG C, performing stress-eliminating heat treatment on the two overlaid tube sheets and the cylindrical tool assembly, performing heat insulation for 3-4 hours, cooling and then cutting off the cylindrical tool assembly. The method is simple and easy to operation; by the adoption of the method, the deformation defect of the tube sheets during the overlaying process is overcome, the product quality and the production efficiency are greatly improved, and the method is suitable for the overlaying of the tube sheets.
Description
Technical field
The present invention relates to the tube sheet bead-welding technology, can prevent the method for tube plate deformation when being specifically related to built-up welding.
Background technology
The welding of carrying out for the deposited metal that increases or recover the weldment size or make the acquisition of weldment surface have property is called built-up welding.Built-up welding is process as a kind of economy of material surface modifying and fast, in being applied to the manufacturing of each industrial department part more and more widely and repairing.The large-area built-up welding of the heat exchanger tube sheet in equipment such as chemical industry, oil refining has not only guaranteed Equipment Design intensity, has also guaranteed the corrosion-resistant requirement of medium contact-making surface.But because the very complicated residual stress that Thermal Cycle is brought can cause the very complicated geometry deformation of mother metal.Common meeting built-up welding austenitic stainless steel on the large-diameter circular tube sheet forms along built-up welding one side pipe plate center to recessed, the tip-tilted shape in edge after built-up welding in the equipment such as chemical industry, oil refining.This tube sheet built-up welding is often along with the increase of round tube board diameter, and deflection also increases.The tube sheet built-up welding that with the diameter is 3000mm is an example, and maximum deformation quantity can reach 20mm, has had a strong impact on the quality of product.
Summary of the invention
The problem that the present invention need solve provide a kind of technology simple, can overcome the method that can prevent tube plate deformation when tube sheet is out of shape the built-up welding of shortcoming when built-up welding.
For addressing the above problem, the technical scheme that the present invention adopts is: can prevent the method for tube plate deformation during built-up welding, may further comprise the steps:
(1), earlier that two block specifications are identical tube sheet is overlapping up and down; Need outside the tube sheet plate of built-up welding faces; The cylindrical shell frock that will match with the tube sheet diameter is sleeved on the circumference side of two tube sheets then, again with the upper/lower terminal of cylindrical shell frock respectively with upper and lower two tube sheet firm welding;
(2), the two tube sheet plate faces that need built-up welding are carried out built-up welding respectively, and the specification requirement of the overlay cladding of upper and lower two tube sheets is in full accord;
(3) two tube sheets that built-up welding finished carry out stress-removal heat treatment together with the cylindrical shell frock, and heat treated temperature is 580 ℃ ± 10 ℃, are incubated 3～4 hours, after cooling, cut off the cylindrical shell frock then.
Further, can prevent the method for tube plate deformation during aforesaid built-up welding, wherein, the internal diameter of described cylindrical shell frock is than the big 3 ~ 5mm of tube sheet diameter.
Advantage of the present invention is: simple in structure, overcome the shortcoming that tube sheet is out of shape when built-up welding, and improved the quality and the production efficiency of product greatly.
Description of drawings
Fig. 1 can prevent in the method for tube plate deformation the syndeton sketch map of two tube sheets and cylindrical shell frock when being built-up welding of the present invention.
Fig. 2 is the vertical view of Fig. 1.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is done further detailed description.
Can prevent the method for tube plate deformation during built-up welding, may further comprise the steps:
(1), like Fig. 1, shown in Figure 2; Earlier that two block specifications are identical upper perforated plate 1 is overlapping about in the of 2 with lower perforated plate; Specification is identical to be meant that diameter, thickness, the material of tube sheet are all identical; Need outside the tube sheet plate of built-up welding faces; The cylindrical shell frock 3 that will match with the tube sheet diameter is sleeved on the circumference side of two tube sheets then; Again with the upper/lower terminal of cylindrical shell frock 3 respectively with upper perforated plate 1 and lower perforated plate 2 firm welding, the internal diameter of present embodiment middle cylinder body frock 3 is than the big 4mm of tube sheet diameter.
(2), upper perforated plate 1 and the lower perforated plate 2 that needs built-up welding carried out built-up welding respectively, the last overlay cladding 4 of upper and lower as shown in fig. 1 two tube sheets is in full accord with the specification requirement of following overlay cladding 5, and is all identical like diameter, thickness, the material of layer.
(3) two tube sheets finishing of built-up welding carry out stress-removal heat treatment together with cylindrical shell frock 3, and heat treated temperature is 580 ℃ ± 10 ℃, is incubated 3～4 hours, after cooling, cut off cylindrical shell frock 3 then.
Can prevent the method for tube plate deformation during built-up welding described in the present invention; Two identical tube sheets are stacked unanimity; And outside the plate that will need built-up welding faces; And on its circumference side with the two ends firm welding of cylindrical shell frock; And then respectively two tube sheets are carried out built-up welding; Then two tube sheets are carried out stress-removal simultaneously and handle, the built-up welding stress that such two monolithic tube sheets produce when built-up welding is cancelled each other, and just can not cause welding the monolithic tube plate deformation after finishing.Above-mentioned method is simple, and is easy to operate, overcome the shortcoming that tube sheet is out of shape when built-up welding, improved the quality and the production efficiency of product greatly.
Claims (2)
1. can prevent the method for tube plate deformation during built-up welding, it is characterized in that: may further comprise the steps:
(1), earlier that two block specifications are identical tube sheet is overlapping up and down; Need outside the tube sheet plate of built-up welding faces; The cylindrical shell frock that will match with the tube sheet diameter is sleeved on the circumference side of two tube sheets then, again with the upper/lower terminal of cylindrical shell frock respectively with upper and lower two tube sheet firm welding;
(2), the two tube sheet plate faces that need built-up welding are carried out built-up welding respectively, and the specification requirement of the overlay cladding of upper and lower two tube sheets is in full accord;
(3) two tube sheets that built-up welding finished carry out stress-removal heat treatment together with the cylindrical shell frock, and heat treated temperature is 580 ℃ ± 10 ℃, are incubated 3～4 hours, after cooling, cut off the cylindrical shell frock then.
2. can prevent the method for tube plate deformation during built-up welding according to claim 1, it is characterized in that: the internal diameter of described cylindrical shell frock is than the big 3 ~ 5mm of tube sheet diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102878854A CN102350568A (en) | 2011-09-26 | 2011-09-26 | Method for preventing tube sheets from deforming during overlaying process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102878854A CN102350568A (en) | 2011-09-26 | 2011-09-26 | Method for preventing tube sheets from deforming during overlaying process |
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| CN102350568A true CN102350568A (en) | 2012-02-15 |
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| CN2011102878854A Pending CN102350568A (en) | 2011-09-26 | 2011-09-26 | Method for preventing tube sheets from deforming during overlaying process |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102698447A (en) * | 2012-05-18 | 2012-10-03 | 张家港化工机械股份有限公司 | Connection structure for cylinder and tube plate of tube-type falling-film evaporator |
| CN105478964A (en) * | 2016-02-01 | 2016-04-13 | 哈电集团（秦皇岛）重型装备有限公司 | Surfacing welding technology for large-area anti-corrosion layers of tube plate |
| CN105945440A (en) * | 2016-05-30 | 2016-09-21 | 哈尔滨空调股份有限公司 | Method for preventing pipe plates from welding deformation through strip surfacing of high-pressure air cooler pipe plates |
| CN107378197A (en) * | 2017-07-28 | 2017-11-24 | 无锡康柏斯机械科技有限公司 | A kind of processing method for preventing from deforming during heat exchanger tube sheet built-up welding |
| CN107726913A (en) * | 2017-10-31 | 2018-02-23 | 珠海格力电器股份有限公司 | Tube sheet, shell-and-tube heat exchanger and air-conditioning |
| CN109454370A (en) * | 2018-12-11 | 2019-03-12 | 云南大为化工装备制造有限公司 | A kind of high-precision assembly welding method of large-diameter hollow combination tube sheet |
| CN109551082A (en) * | 2018-12-29 | 2019-04-02 | 东方电气集团东方锅炉股份有限公司 | A kind of overlaying method of large diameter thin wall double tubesheet |
| CN110842481A (en) * | 2019-11-24 | 2020-02-28 | 哈尔滨锅炉厂有限责任公司 | Large-area flat plate part surfacing anti-deformation method |
| CN111185694A (en) * | 2020-02-14 | 2020-05-22 | 荆门宏图特种飞行器制造有限公司 | Tube plate surfacing welding machine, anti-deformation device thereof and surfacing welding method |
| CN112756835A (en) * | 2021-01-29 | 2021-05-07 | 东方电气集团东方锅炉股份有限公司 | Method for processing surfacing layer of butt weld of tube plate |
| CN112941504A (en) * | 2021-01-22 | 2021-06-11 | 山东能源重装集团大族再制造有限公司 | Method for reducing plate cladding deformation |
| CN113319460A (en) * | 2021-06-18 | 2021-08-31 | 中石化南京化工机械有限公司 | Method for effectively controlling flatness of pipe plate after surfacing of large pipe plate |
| CN113714667A (en) * | 2021-08-17 | 2021-11-30 | 沈阳东方钛业股份有限公司 | Method for preventing and treating pipe plate overlaying deformation |
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| CN2590717Y (en) * | 2002-12-18 | 2003-12-10 | 罗明德 | Concave composite pipe plate |
| 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 |
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- 2011-09-26 CN CN2011102878854A patent/CN102350568A/en active Pending
Patent Citations (2)
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| CN2590717Y (en) * | 2002-12-18 | 2003-12-10 | 罗明德 | Concave composite pipe plate |
| 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 |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102698447B (en) * | 2012-05-18 | 2014-07-30 | 张家港化工机械股份有限公司 | Connection structure for cylinder and tube plate of tube-type falling-film evaporator |
| CN102698447A (en) * | 2012-05-18 | 2012-10-03 | 张家港化工机械股份有限公司 | Connection structure for cylinder and tube plate of tube-type falling-film evaporator |
| CN105478964A (en) * | 2016-02-01 | 2016-04-13 | 哈电集团（秦皇岛）重型装备有限公司 | Surfacing welding technology for large-area anti-corrosion layers of tube plate |
| CN105945440A (en) * | 2016-05-30 | 2016-09-21 | 哈尔滨空调股份有限公司 | Method for preventing pipe plates from welding deformation through strip surfacing of high-pressure air cooler pipe plates |
| CN107378197A (en) * | 2017-07-28 | 2017-11-24 | 无锡康柏斯机械科技有限公司 | A kind of processing method for preventing from deforming during heat exchanger tube sheet built-up welding |
| CN107726913A (en) * | 2017-10-31 | 2018-02-23 | 珠海格力电器股份有限公司 | Tube sheet, shell-and-tube heat exchanger and air-conditioning |
| CN109454370B (en) * | 2018-12-11 | 2020-09-08 | 云南大为化工装备制造有限公司 | High-precision assembly welding method for large-diameter hollow combined tube plate |
| CN109454370A (en) * | 2018-12-11 | 2019-03-12 | 云南大为化工装备制造有限公司 | A kind of high-precision assembly welding method of large-diameter hollow combination tube sheet |
| CN109551082A (en) * | 2018-12-29 | 2019-04-02 | 东方电气集团东方锅炉股份有限公司 | A kind of overlaying method of large diameter thin wall double tubesheet |
| CN110842481A (en) * | 2019-11-24 | 2020-02-28 | 哈尔滨锅炉厂有限责任公司 | Large-area flat plate part surfacing anti-deformation method |
| CN111185694A (en) * | 2020-02-14 | 2020-05-22 | 荆门宏图特种飞行器制造有限公司 | Tube plate surfacing welding machine, anti-deformation device thereof and surfacing welding method |
| CN111185694B (en) * | 2020-02-14 | 2022-01-07 | 荆门宏图特种飞行器制造有限公司 | Tube plate surfacing welding machine, anti-deformation device thereof and surfacing welding method |
| CN112941504A (en) * | 2021-01-22 | 2021-06-11 | 山东能源重装集团大族再制造有限公司 | Method for reducing plate cladding deformation |
| CN112756835A (en) * | 2021-01-29 | 2021-05-07 | 东方电气集团东方锅炉股份有限公司 | Method for processing surfacing layer of butt weld of tube plate |
| CN113319460A (en) * | 2021-06-18 | 2021-08-31 | 中石化南京化工机械有限公司 | Method for effectively controlling flatness of pipe plate after surfacing of large pipe plate |
| CN113714667A (en) * | 2021-08-17 | 2021-11-30 | 沈阳东方钛业股份有限公司 | Method for preventing and treating pipe plate overlaying deformation |
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Application publication date: 20120215 |