CN105710603A - Processing technology for cylindrical shell sections of pipeline - Google Patents
Processing technology for cylindrical shell sections of pipeline Download PDFInfo
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- CN105710603A CN105710603A CN201410723768.1A CN201410723768A CN105710603A CN 105710603 A CN105710603 A CN 105710603A CN 201410723768 A CN201410723768 A CN 201410723768A CN 105710603 A CN105710603 A CN 105710603A
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- shell ring
- pipeline
- cylindrical shell
- blanking
- shell sections
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Abstract
The invention discloses a processing technology for cylindrical shell sections of a pipeline. The processing technology comprises the following steps that 2, the number of longitudinal seams of the cylindrical shell sections of the pipeline is not more than two, and the distance of the longitudinal seam between the adjacent cylindrical shell sections is not smaller than 200 mm; 3, when marking off is conducted, 2 mm welding shrinkage allowances are reserved in length and width correspondingly, and a 3-5 mm edge planning allowance should be reserved on the straight flange; 4, a plate is subjected to blanking by being cut through a semi-automatic cutting machine or a numerical control cutting machine; all holes are not opened during blanking and cutting is conducted after the cylindrical shell sections are assembled; and the width tolerance of the plate subjected to blanking is +/-1 mm, the length tolerance is +/-1 mm, and the diagonal difference is 2 mm; 5, after spheronization is conducted, pressing head allowances are cut, longitudinal seams and grooves are formed, the clearance of butt joint grooves is 0-1 mm, the misalignment is 0-1 mm, and the longitudinal seams are welded; and 6, the arc length of a sample plate subjected to roundness correction should be 1/4 of the perimeter of the cylindrical shell sections, and a clearance between the sample plate and the inner wall of the pipeline is not larger than 3 mm at the butt joint longitudinal seams, not larger than 2 mm in the positions, 200 mm away from the pipeline end, of the butt joint longitudinal seams, and not larger than 1 mm in other parts; and the perimeter deviation of the cylindrical shell sections is +/-3 mm, the roundness deviation is not larger than 6 mm, the straightness of the cylindrical shell sections is not larger than 1 mm/m, and the end surface inclination is not larger than 2 mm.
Description
Technical field
The present invention relates to a kind of pipeline shell ring processing technique.
Background technology
Existing pipeline shell ring processing technique exists that procedure arrangement is unreasonable, operation is various, and technological parameter selects unreasonable, and the collocation of each technological parameter is unreasonable and operator's skill requirement is higher so that production cost is higher, product quality is on the low side, yield rate is not high.
Summary of the invention
Because the drawbacks described above of prior art, the technical problem to be solved be to provide a kind of operation rationally, the pipeline shell ring processing technique of low cost of manufacture.
For achieving the above object, the invention provides
A kind of pipeline shell ring processing technique, comprises the steps:
1) pipeline shell ring adopts that sheet material is round as a ball, welding fabrication；The shell ring docked with end socket should blanking after end socket goes back to factory and checks the size of end socket；
2) pipeline shell ring longitudinal seam is less than two, and after using for ease of pipeline, maintenance, seaming position should be positioned at conduit upper, and adjacent cylindrical section longitudinal joint spacing is not less than 200mm；If the groove of longitudinal seam is double V-groove, groove should be opened in shell ring；
3), number during material, length and width respectively stays 2mm to weld allowance for shrinkage, has had contemplated that except the part of allowance for shrinkage in figure；Straight flange should stay 3～5mm to dig limit surplus；The hole connected with arm, that open including designing requirement building site, a number upper centrage, line of cut, interval 50mm should stamp ocean dotting punch；360 ° of quartering reticules and equal number of line of inspection are at crust, and do upper sign with white oil paint；Reserved pressure head surplus is considered whether according to veneer reeling machine performance；
4) blanking of sheet material adopts semi auto cutting machine cutting or the cutting of numerical control cutting mill, does not open, cutting after shell ring assembles during institute's hole blanking；During blanking, the groove of straight flange adopts planing operation, and the groove of curl is processed with carbon arc air gouging when shell ring assembles；Sheet material after blanking, width tolerance ± 1mm, length tolerance ± 1mm, diagonal difference 2mm；
5) after round as a ball, cut pressure head surplus, open longitudinal joint groove, butting grooves gap 0～1mm, misalignment≤1mm, weld longitudinal joint, submerged-arc welding or manual welding can be adopted；Postwelding school circle；
6) arc length of school round template should be 1/4 shell ring girth, the gap of model and inner-walls of duct: being not more than 3mm docking longitudinal joint place, the docking longitudinal joint place from pipe end 200mm is not more than 2mm, and other position is not more than 1mm；Shell ring girth deviation ± 3mm, roundness deviation is not more than 6mm, and shell ring glacing flatness is not more than 1mm/m, and end slope is not more than 2mm；
7) in the course of processing, it is prevented that there is damage on the surface of pipeline shell ring, there is the necessary reconditioning in position of serious scar so that it is rounding off, and the wall thickness of reconditioning place cannot be less than design wall thickness；
8), after pipeline shell ring passed examination, the two ends mouth of pipe should be welded with support with anti-deformation.
The invention has the beneficial effects as follows: operation of the present invention is reasonable, low cost of manufacture, each parameter collocation reasonable coordination, it is possible to be effectively improved product quality and production efficiency.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described:
A kind of pipeline shell ring processing technique, comprises the steps:
1) pipeline shell ring adopts that sheet material is round as a ball, welding fabrication；The shell ring docked with end socket should blanking after end socket goes back to factory and checks the size of end socket；
2) pipeline shell ring longitudinal seam is less than two, and after using for ease of pipeline, maintenance, seaming position should be positioned at conduit upper, and adjacent cylindrical section longitudinal joint spacing is not less than 200mm；If the groove of longitudinal seam is double V-groove, groove should be opened in shell ring；
3), number during material, length and width respectively stays 2mm to weld allowance for shrinkage, has had contemplated that except the part of allowance for shrinkage in figure；Straight flange should stay 3～5mm to dig limit surplus；The hole connected with arm, that open including designing requirement building site, a number upper centrage, line of cut, interval 50mm should stamp ocean dotting punch；360 ° of quartering reticules and equal number of line of inspection are at crust, and do upper sign with white oil paint；Reserved pressure head surplus is considered whether according to veneer reeling machine performance；
4) blanking of sheet material adopts semi auto cutting machine cutting or the cutting of numerical control cutting mill, does not open, cutting after shell ring assembles during institute's hole blanking；During blanking, the groove of straight flange adopts planing operation, and the groove of curl is processed with carbon arc air gouging when shell ring assembles；Sheet material after blanking, width tolerance ± 1mm, length tolerance ± 1mm, diagonal difference 2mm；
5) after round as a ball, cut pressure head surplus, open longitudinal joint groove, butting grooves gap 0～1mm, misalignment≤1mm, weld longitudinal joint, submerged-arc welding or manual welding can be adopted；Postwelding school circle；
6) arc length of school round template should be 1/4 shell ring girth, the gap of model and inner-walls of duct: being not more than 3mm docking longitudinal joint place, the docking longitudinal joint place from pipe end 200mm is not more than 2mm, and other position is not more than 1mm；Shell ring girth deviation ± 3mm, roundness deviation is not more than 6mm, and shell ring glacing flatness is not more than 1mm/m, and end slope is not more than 2mm；
7) in the course of processing, it is prevented that there is damage on the surface of pipeline shell ring, there is the necessary reconditioning in position of serious scar so that it is rounding off, and the wall thickness of reconditioning place cannot be less than design wall thickness；
8), after pipeline shell ring passed examination, the two ends mouth of pipe should be welded with support with anti-deformation.
Claims (1)
1. a pipeline shell ring processing technique, it is characterised in that comprise the steps:
1) pipeline shell ring adopts that sheet material is round as a ball, welding fabrication；The shell ring docked with end socket should blanking after end socket goes back to factory and checks the size of end socket；
2) pipeline shell ring longitudinal seam is less than two, and after using for ease of pipeline, maintenance, seaming position should be positioned at conduit upper, and adjacent cylindrical section longitudinal joint spacing is not less than 200mm；If the groove of longitudinal seam is double V-groove, groove should be opened in shell ring；
3), number during material, length and width respectively stays 2mm to weld allowance for shrinkage, has had contemplated that except the part of allowance for shrinkage in figure；Straight flange should stay 3～5mm to dig limit surplus；The hole connected with arm, that open including designing requirement building site, a number upper centrage, line of cut, interval 50mm should stamp ocean dotting punch；360 ° of quartering reticules and equal number of line of inspection are at crust, and do upper sign with white oil paint；Reserved pressure head surplus is considered whether according to veneer reeling machine performance；
4) blanking of sheet material adopts semi auto cutting machine cutting or the cutting of numerical control cutting mill, does not open, cutting after shell ring assembles during institute's hole blanking；During blanking, the groove of straight flange adopts planing operation, and the groove of curl is processed with carbon arc air gouging when shell ring assembles；Sheet material after blanking, width tolerance ± 1mm, length tolerance ± 1mm, diagonal difference 2mm；
5) after round as a ball, cut pressure head surplus, open longitudinal joint groove, butting grooves gap 0～1mm, misalignment≤1mm, weld longitudinal joint, submerged-arc welding or manual welding can be adopted；Postwelding school circle；
6) arc length of school round template should be 1/4 shell ring girth, the gap of model and inner-walls of duct: being not more than 3mm docking longitudinal joint place, the docking longitudinal joint place from pipe end 200mm is not more than 2mm, and other position is not more than 1mm；Shell ring girth deviation ± 3mm, roundness deviation is not more than 6mm, and shell ring glacing flatness is not more than 1mm/m, and end slope is not more than 2mm；
7) in the course of processing, it is prevented that there is damage on the surface of pipeline shell ring, there is the necessary reconditioning in position of serious scar so that it is rounding off, and the wall thickness of reconditioning place cannot be less than design wall thickness；
8), after pipeline shell ring passed examination, the two ends mouth of pipe should be welded with support with anti-deformation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410723768.1A CN105710603A (en) | 2014-12-04 | 2014-12-04 | Processing technology for cylindrical shell sections of pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410723768.1A CN105710603A (en) | 2014-12-04 | 2014-12-04 | Processing technology for cylindrical shell sections of pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105710603A true CN105710603A (en) | 2016-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410723768.1A Pending CN105710603A (en) | 2014-12-04 | 2014-12-04 | Processing technology for cylindrical shell sections of pipeline |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109014796A (en) * | 2018-09-18 | 2018-12-18 | 哈尔滨锅炉厂有限责任公司 | Large capacity suppresses drum thickness tile manufacturing method |
| CN110201474A (en) * | 2019-05-16 | 2019-09-06 | 首钢水城钢铁(集团)赛德建设有限公司 | A kind of dust-extraction unit and its use air hose production method |
| CN111047667A (en) * | 2019-11-25 | 2020-04-21 | 大明重工有限公司 | Method and device for generating batch edge planing process diagrams |
| CN111571148A (en) * | 2020-05-29 | 2020-08-25 | 重庆水轮机厂有限责任公司 | Method for molding barrel of runner chamber of water turbine |
-
2014
- 2014-12-04 CN CN201410723768.1A patent/CN105710603A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109014796A (en) * | 2018-09-18 | 2018-12-18 | 哈尔滨锅炉厂有限责任公司 | Large capacity suppresses drum thickness tile manufacturing method |
| CN109014796B (en) * | 2018-09-18 | 2020-07-10 | 哈尔滨锅炉厂有限责任公司 | Method for manufacturing large-capacity pressed thick boiler barrel tile |
| CN110201474A (en) * | 2019-05-16 | 2019-09-06 | 首钢水城钢铁(集团)赛德建设有限公司 | A kind of dust-extraction unit and its use air hose production method |
| CN111047667A (en) * | 2019-11-25 | 2020-04-21 | 大明重工有限公司 | Method and device for generating batch edge planing process diagrams |
| CN111571148A (en) * | 2020-05-29 | 2020-08-25 | 重庆水轮机厂有限责任公司 | Method for molding barrel of runner chamber of water turbine |
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Application publication date: 20160629 |