CN101474644A - High intensity straight-line joint pipeline steel tube fabrication technique using high-frequency electric resistance welding - Google Patents
High intensity straight-line joint pipeline steel tube fabrication technique using high-frequency electric resistance welding Download PDFInfo
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- CN101474644A CN101474644A CNA2009100101251A CN200910010125A CN101474644A CN 101474644 A CN101474644 A CN 101474644A CN A2009100101251 A CNA2009100101251 A CN A2009100101251A CN 200910010125 A CN200910010125 A CN 200910010125A CN 101474644 A CN101474644 A CN 101474644A
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Abstract
The invention relates to the manufacturing technical field of steel pipes for long-distance transport pipes for petroleum, natural gas, mineral powder and the like, in particular to a pipeline steel pipe manufacturing technology employing straight high-frequency resistance welding. Raw materials meeting requirements are purchased, wherein, the requirements comprise physical properties, chemical compositions and mechanical properties of the raw materials. The raw materials are inspected to determine whether the physical properties, the chemical compositions and the mechanical properties meet the requirements. The technology comprises steel pipe manufacturing preparation, determination of production line moulding process parameters, determination of welding process parameters and determination of auxiliary material parameters. The pipeline steel pipe manufacturing technology employing the straight high-frequency resistance welding can help manufacture 632.2X11.1-60 pipeline steel pipes, various performance indexes of the steel pipes meet the requirements of pipeline steel pipes (USA API SPEC 5L PSL2 44 Standard), the heights of an inside seam and an outside seam are identical with the pipe wall of a parent material, and the technology perfectly solves the engineering anti-corrosive difficulties. The straight high-frequency pipeline pipe manufacturing technology has the advantages of high manufacturing efficiency, fast speed and low cost.
Description
Technical field
The present invention relates to the manufacturing technology field of long-distance feed-line such as oil, natural gas, breeze, particularly a kind of high intensity straight-line joint pipeline steel tube fabrication technique that adopts the alternating-current resistance welding with steel pipe.
Background technology
At present, be the steel pipe that adopts the following specification of diameter 508mm substantially at home and abroad with pipeline steel pipes such as vertical masonry joint alternating-current resistance welded tube transfer oil, natural gas, breezes, the physical dimension of steel pipe is controlled external diameter, adopts longitudinal submerged arc welded pipe or spiral submerged arc welded steel pipe usually greater than the steel pipe more than the 508mm.Because there is the inner and outer welding reinforcement in the spiral submerged arc welded steel pipe, anticorrosive coat can not be fitted on the steel tube surface well when steel pipe corrosion-proof, thereby has reduced the anticorrosive coat life-span, therefore also just has influence on the life-span of whole piece pipeline.In addition, spiral submerged arc welded steel pipe's production speed is 1/10th of vertical masonry joint alternating-current resistance welded tube speed of production, can't improve the speed of application of pipe-line construction.
The heavy caliber high-frequency straight welded pipe production line is in Rapid development stage, and production equipment can meet the needs of production, but manufacturing technology still is in the development phase.
Summary of the invention
The objective of the invention is for addressing the above problem, the pipe manufacturer technology that the purpose of this invention is to provide a kind of vertical masonry joint alternating-current resistance welding of practicality, can produce the pipeline steel tube of 632.2X11.1-60 grade of steel, every performance indications of steel pipe all satisfy the requirement of pipeline steel tube (44 editions standards of U.S. API SPEC 5L PSL2), and the height of inner and outer welding is all consistent with the mother metal tube wall, has solved the anticorrosion difficulty in the engineering well.This straight high-frequency pipeline pipe manufacturing technology production efficiency height, speed is fast, and cost is low.
For achieving the above object, technology contents of the present invention is as follows:
High-frequency straight welded pipe production line pipeline steel tube of the present invention is made main frame Wiring technology process: coiled sheet is prepared, material loading, uncoiling shovel head, leveling, crop is sheared butt welding, and kink stores, and mills the limit, collect particle, steel plate inspection, cage moulding, steel pipe welding, collect particle, strike off inside and outside burr, 1# pulls out frame, the online ultrasound examination of steel pipe, the weld seam annealing in process, 2# pulls out frame, air cooling, water-cooled, the sizing aligning, marking, fixed ruler cutting, steel pipe output.
Pipeline steel tube of the present invention is made the finishing line technological process: steel pipe output back one tunnel is delivered to sampling/cutting machine intercepting sample or is cut off the defective pipeline section through the blanking stand, another route chain-linked conveyer is sent to and is done appearance and dimension check, then manages interior bath (going out interior burr), flat head chamfering, the water pressure test, body and pipe end ultrasonic inspection, visual examination, weighing, it is long to survey, final inspection, warehouse-in, visual examination detects the problem steel pipe and rechecks, and turns back to flat head chamfering after reconditioning/cut-out.
The pipeline steel tube fabrication technique of employing vertical masonry joint alternating-current resistance welding of the present invention, comprise high-frequency straight welded pipe production line pipeline steel tube making main frame Wiring technology flow process: coiled sheet is prepared, material loading, uncoiling shovel head, leveling, crop, shear butt welding, kink stores, and mills the limit, collects particle, steel plate inspection, moulding, particle is collected in the steel pipe welding, strike off inside and outside burr, 1# pulls out frame, the online ultrasound examination of steel pipe, weld seam annealing in process, 2# pulls out frame, the air cooling, water-cooled, sizing aligning, marking, fixed ruler cutting, steel pipe output and pipeline steel tube are made the finishing line technological process: steel pipe output back one tunnel is delivered to sampling/cutting machine intercepting sample or is cut off the defective pipeline section through the blanking stand, another route chain-linked conveyer is sent to and is done appearance and dimension check, go out interior burr, flat head chamfering, the water pressure test in then managing, body and pipe end ultrasonic inspection, visual examination is weighed and is surveyed length, final inspection, warehouse-in, visual examination detects the problem steel pipe and rechecks, and turns back to flat head chamfering after reconditioning/cut-out, it is characterized in that:
1) in described coiled sheet is prepared,
A) determine that raw material plate is wide: calculate the wide B of raw material plate according to the characteristic and the empirical equation of producing unit,
B) inspection of raw and process materials: raw-material check purpose is to confirm whether requirement of raw material, is the precondition of producing steel pipe, in time corrects when problem is arranged and improves,
2) in described forming process, determine molding technique parameter,
A) adjust on request the friction frame the pinch roll height,
B) utilize automatic setting roller position system to adjust preformed frame, crimp frame, cage forming frame, thick forming frame,
C) adjust the precisive shaped frame, pull out the roll pass of frame, reducing mill stand, measure the roll pass of horizontal roll and vertical roller respectively with the roll pass survey tool, with the roll pass precision of assurance rolled steel tube,
3) in described steel pipe welding process, determine welding condition:
A) welding procedure is an induction welding,
B) speed of welding is 10.5 ± 1.0m/min, weldingvoltage is 700 ± 20V, bonding power is 710 ± 50KW, welding frequency is 150 ± 2KHz, and the size of angular aperture is 3.8 ° ± 0.5 °, and the length of angular aperture is 2000 ± 50mm, amount of compression is 5～5.5mm, first annealing temperature of intermediate frequency is 700 ℃ ± 10 ℃, and last annealing temperature of intermediate frequency is 990 ± 10 ℃
4) the auxiliary process parameter is determined:
The concentration of emulsion used percentage by weight is 4 ± 0.5%, and the pressure of recirculated cooling water is 0.38 ± 0.1MPa, and compressed air pressure is 0.6 ± 0.1MPa,
In implementation process, to accomplish wide the determining of raw material plate, the affirmation of the every performance of raw material, molding technique parameter cooperates with the effective of welding condition, and the parameter of auxiliary material cooperates with the effective of welding condition.
The described formula of testing that calculates the wide B of raw material plate is;
(D+2.5)π-2.8t+4.5+0.5t
In the formula: D----outer diameter of steel pipes, mm
The t-----thickness of steel pipe, mm.
For producing the 632.2X11.1-X60 pipeline steel tube, in the determining of described raw material width, the wide B=1978mm of plate, wide through clean flitch behind the edge milling machines is 1972 ± 1mm,
Described welding condition is:
Speed of welding is 10.5m/min, weldingvoltage is 700V, bonding power 710KW, welding frequency is 150KHz, and the size of angular aperture is 3.8 °, and the length of angular aperture is 2000mm, amount of compression is 5～5.5mm, first annealing temperature of intermediate frequency is 700 ℃, and last annealing temperature of intermediate frequency is 990 ± 10 ℃
Described auxiliary process parameter is: the concentration of emulsion used percentage by weight is 4%, and the pressure of recirculated cooling water is 0.38MPa, and compressed air pressure is 0.6MPa
Compared with prior art, the invention has the beneficial effects as follows:
The steel pipe maximum gauge can reach 635mm, steel pipe outward appearance geometric accuracy height, and the height of inner and outer welding is all consistent with the mother metal tube wall, and anticorrosive coat is fitted with the mother metal tube wall well when guaranteeing steel pipe corrosion-proof.Mechanical property is higher than line pipe U.S. API SPEC 5L PSL2 standard-required, and the steel pipe lumber recovery reaches more than 88.5%, compares the production efficiency height with the steel pipe of other technology manufacturing, and cost is low, is feed-line steel pipes such as desirable oil, natural gas, breeze.
Description of drawings
Fig. 1 makes main frame Wiring technology flow chart for the high-frequency straight welded pipe production line pipeline steel tube.
Fig. 2 is that pipeline steel tube is made the finishing line process chart.
The specific embodiment
The given embodiment of knot junction accompanying drawing describes the specific embodiment of the present invention in detail below.
The pipeline steel tube fabrication technique of employing vertical masonry joint alternating-current resistance welding of the present invention, comprise high-frequency straight welded pipe production line pipeline steel tube making main frame Wiring technology flow process: as shown in Figure 1, the 1-coiled sheet is prepared, the 2-material loading, 3-uncoiling shovel head, the 4-leveling, the 5-crop, 6-shears butt welding, the 7-kink stores, 9-mills the limit, and 8-collects particle, 10-steel plate inspection, the 11-moulding, the welding of 12-steel pipe, 14-collects particle, and 13-strikes off inside and outside burr, 15-1# pulls out frame, the online ultrasound examination of 16-steel pipe, 17-weld seam annealing in process, 18-2# pulls out frame, the cooling of 19-air, the 20-water-cooled, 21-sizing aligning, 22-marking, the 23-fixed ruler cutting, the output of 24-steel pipe, as shown in Figure 2, pipeline steel tube is made the finishing line technological process: 24-steel pipe output back one tunnel is delivered to sampling/cutting machine 29 intercepting samples 25 or is cut off defective pipeline section 32 through blanking stand 26, another route chain-linked conveyer 28 is sent to and is done appearance and dimension check 27, bath 30 in then managing (burr 31 in going out), flat head chamfering 33, the water pressure test 34, body and pipe end ultrasonic check 39, visual examination 41 is weighed and is surveyed length 42, final inspection 43, warehouse-in 44, visual examination 41 detects the problem steel pipe and rechecks 40, turns back to flat head chamfering 33 after reconditioning/cut-out 36, it is characterized in that:
1) in described 1-coiled sheet is prepared,
A) determine that raw material plate is wide: calculate the wide B of raw material plate according to the characteristic and the empirical equation of producing unit,
B) inspection of raw and process materials: raw-material check purpose is to confirm whether requirement of raw material, is the precondition of producing steel pipe, in time corrects when problem is arranged and improves,
2) in described 11-forming process, determine molding technique parameter,
A) adjust on request the friction frame the pinch roll height,
B) utilize automatic setting roller position system to adjust preformed frame, crimp frame, cage forming frame, thick forming frame,
C) adjust precisive shaped frame, 15-1# and pull out the roll pass that frame, 18-2# are pulled out frame, 21-sizing aligning frame, measure the roll pass of horizontal roll and vertical roller respectively with the roll pass survey tool, with the roll pass precision of assurance rolled steel tube,
3) in described 12-steel pipe welding process, determine welding condition:
A) welding procedure is an induction welding,
B) speed of welding is 10.5 ± 1.0m/min, weldingvoltage is 700 ± 20V, bonding power is 710 ± 50KW, welding frequency is 150 ± 2KHz, and the size of angular aperture is 3.8 ° ± 0.5 °, and the length of angular aperture is 2000 ± 50mm, amount of compression is 5～5.5mm, first annealing temperature of the intermediate frequency of 17-weld seam annealing in process is 700 ℃ ± 10 ℃, and last annealing temperature of intermediate frequency is 990 ± 10 ℃
4) the auxiliary process parameter is determined:
The concentration of emulsion used percentage by weight is 4 ± 0.5%, and the pressure of recirculated cooling water is 0.38 ± 0.1MPa, and compressed air pressure is 0.6 ± 0.1MPa,
In implementation process, to accomplish wide the determining of raw material plate, the affirmation of the every performance of raw material, molding technique parameter cooperates with the effective of welding condition, and the parameter of auxiliary material cooperates with the effective of welding condition.
Label 32,38 among the figure is useless pipe.
The described formula of testing that calculates the wide B of raw material plate is;
(D+2.5)π-2.8t+4.5+0.5t
In the formula: D----outer diameter of steel pipes, mm
The t-----thickness of steel pipe, mm.
As embodiment, for producing the 632.2X11.1-X60 pipeline steel tube, in the determining of described raw material width, the wide B=1978mm of plate, wide through clean flitch behind the edge milling machines is 1972 ± 1mm,
Described welding condition is:
Speed of welding is 10.5m/min, weldingvoltage is 700V, bonding power is 710KW, welding frequency is 150KHz, and the size of angular aperture is 3.8 ° °, and the length of angular aperture is 2000mm, amount of compression is 5～5.5mm, first annealing temperature of the intermediate frequency of weld seam annealing in process is 700 ℃, and last annealing temperature of intermediate frequency is 990 ± 10 ℃
Described auxiliary process parameter: the concentration of emulsion used percentage by weight is 4%, and the pressure of recirculated cooling water is 0.38MPa, and compressed air pressure is 0.6MPa.
Claims (5)
1. high intensity straight-line joint pipeline steel tube fabrication technique that adopts alternating-current resistance welding, comprise high-frequency straight welded pipe production line pipeline steel tube making main frame Wiring technology flow process: coiled sheet is prepared, material loading, uncoiling shovel head, leveling, crop, shear butt welding, kink stores, and mills the limit, collects particle, steel plate inspection, moulding, particle is collected in the steel pipe welding, strike off inside and outside burr, 1# pulls out frame, the online ultrasound examination of steel pipe, weld seam annealing in process, 2# pulls out frame, the air cooling, water-cooled, sizing aligning, marking, fixed ruler cutting, steel pipe output and pipeline steel tube are made the finishing line technological process: steel pipe output back one tunnel is delivered to sampling/cutting machine intercepting sample or is cut off the defective pipeline section through the blanking stand, another route chain-linked conveyer is sent to and is done appearance and dimension check, go out interior burr, flat head chamfering, the water pressure test in then managing, body and pipe end ultrasonic inspection, visual examination is weighed and is surveyed length, final inspection, warehouse-in, visual examination detects the problem steel pipe and rechecks, and turns back to flat head chamfering after reconditioning/cut-out, it is characterized in that:
1) in described coiled sheet is prepared,
A) determine that raw material plate is wide: calculate the wide B of raw material plate according to the characteristic and the empirical equation of producing unit,
B) inspection of raw and process materials: raw-material check purpose is to confirm whether requirement of raw material, is the precondition of producing steel pipe, in time corrects when problem is arranged and improves,
2) in described forming process, determine molding technique parameter,
A) adjust on request the friction frame the pinch roll height,
B) utilize automatic setting roller position system to adjust preformed frame, crimp frame, cage forming frame, thick forming frame,
C) adjust the precisive shaped frame, pull out the roll pass of frame, reducing mill stand, measure the roll pass of horizontal roll and vertical roller respectively with the roll pass survey tool, with the roll pass precision of assurance rolled steel tube,
3) in described steel pipe welding process, determine welding condition:
A) welding procedure is an induction welding,
B) speed of welding is 10.5 ± 1.0m/min, weldingvoltage is 700 ± 20V, bonding power is 710 ± 50KW, welding frequency is 150 ± 2KHz, and the size of angular aperture is 3.8 ° ± 0.5 °, and the length of angular aperture is 2000 ± 50mm, amount of compression is 5～5.5mm, first annealing temperature of intermediate frequency is 700 ℃ ± 10 ℃, and last annealing temperature of intermediate frequency is 990 ± 10 ℃
4) the auxiliary process parameter is determined:
The concentration of emulsion used percentage by weight is 4 ± 0.5%, and the pressure of recirculated cooling water is 0.38 ± 0.1MPa, and compressed air pressure is 0.6 ± 0.1MPa,
In implementation process, to accomplish wide the determining of raw material plate, the affirmation of the every performance of raw material, molding technique parameter cooperates with the effective of welding condition, and the parameter of auxiliary material cooperates with the effective of welding condition.
2, the pipeline steel tube fabrication technique of employing vertical masonry joint alternating-current resistance welding according to claim 1 is characterized in that the described formula of testing that calculates the wide B of raw material plate is;
(D+2.5)π-2.8t+4.5+0.5t
In the formula: D----outer diameter of steel pipes, mm
The t-----thickness of steel pipe, mm.
3, the pipeline steel tube fabrication technique of employing vertical masonry joint alternating-current resistance welding according to claim 1, it is characterized in that for producing the 632.2X11.1-X60 pipeline steel tube, in the determining of described raw material width, the wide B=1978mm of plate, wide through clean flitch behind the edge milling machines is 1972 ± 1mm.
4,, it is characterized in that described welding condition is for producing the 632.2X11.1-X60 pipeline steel tube according to the pipeline steel tube fabrication technique of the described employing vertical masonry joint of claim 1 alternating-current resistance welding:
Speed of welding is 10.5m/min, weldingvoltage is 700V, bonding power is 710KW, welding frequency is 150KHz, the size of angular aperture is 3.8 °, and the length of angular aperture is 2000mm, and amount of compression is 5～5.5mm, first annealing temperature of intermediate frequency is 700 ℃, and last annealing temperature of intermediate frequency is 990 ± 10 ℃.
5, the pipeline steel tube fabrication technique of employing vertical masonry joint alternating-current resistance welding according to claim 1, it is characterized in that for producing the 632.2X11.1-X60 pipeline steel tube, described auxiliary process parameter is: the concentration of emulsion used percentage by weight is 4%, the pressure of recirculated cooling water is 0.38MPa, and compressed air pressure is 0.6MPa.
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| CN102162026A (en) * | 2011-02-19 | 2011-08-24 | 首钢总公司 | Method for annealing weld joint of 45 steel on narrow lap welding machine |
| CN102172814A (en) * | 2011-01-10 | 2011-09-07 | 崔建立 | Method for manufacturing longitudinal submerged arc welded pipe |
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| JP2013545616A (en) * | 2010-11-30 | 2013-12-26 | 大連三高集団有限公司 | Large diameter straight seam welded pipe production line |
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| CN102162026A (en) * | 2011-02-19 | 2011-08-24 | 首钢总公司 | Method for annealing weld joint of 45 steel on narrow lap welding machine |
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| CN102699107A (en) * | 2012-06-19 | 2012-10-03 | 武汉钢铁(集团)公司 | Cold roll forming method of thin-walled and high-strength square steel tube |
| CN102787269A (en) * | 2012-08-03 | 2012-11-21 | 中国石油集团渤海石油装备制造有限公司 | Method for manufacturing HFW (High Frequency Welding) oil casing by K55-grade steel plate |
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| CN103191953A (en) * | 2013-03-28 | 2013-07-10 | 温州市富田不锈钢管有限公司 | Manufacture method of seamless steel tube by using stainless welded tube |
| CN103551714A (en) * | 2013-11-13 | 2014-02-05 | 中冶辽宁德龙钢管有限公司 | Method for improving welding speed of large wall thickness spiral submerged arc welded pipe |
| CN104646931A (en) * | 2013-11-16 | 2015-05-27 | 无锡大金高精度冷拔钢管有限公司 | Manufacturing method of cold drawn welded pipe for precision oil cylinder |
| CN104942425B (en) * | 2014-12-01 | 2018-05-22 | 东莞璋泰五金制品有限公司 | A kind of chrome-molybdenum steel or high intensity mouldability automobile steel ratio-frequency welded tube technique |
| CN105127236A (en) * | 2015-08-18 | 2015-12-09 | 马鞍山市华科实业有限公司 | Manufacturing method for special-shaped steel pipes special for logistics shelves |
| CN106392466A (en) * | 2016-08-25 | 2017-02-15 | 宝鸡石油钢管有限责任公司 | Multifunctional board-board welding simulation test device |
| CN106392466B (en) * | 2016-08-25 | 2018-05-15 | 宝鸡石油钢管有限责任公司 | A kind of multifunction board plate welding analog experimental rig |
| CN107169167A (en) * | 2017-04-18 | 2017-09-15 | 燕山大学 | A kind of analogy method to ERW steel-pipe welding process burr form dynamic simulations |
| CN107497883A (en) * | 2017-10-16 | 2017-12-22 | 江苏鹏程钢结构有限公司 | A kind of seamless steel pipe processing technology |
| CN109732292A (en) * | 2019-03-22 | 2019-05-10 | 合肥昊艺金属制品有限公司 | A kind of corrosion-resistant water tank steel plate and its processing technology |
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