CN102513787A - Process for production line of an ocean engineering structural steel pipes - Google Patents
Process for production line of an ocean engineering structural steel pipes Download PDFInfo
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Abstract
The invention discloses a process for a production line of ocean engineering structural steel pipes. The process comprises the following steps of: 1, checking steel plates; 2, typesetting and marking off; 3, cutting; 4, transporting the steel plates onto a conveying roller of an edge milling machine; 5, milling edges; 6, hoisting the steel plates on the conveying roller; 7, squeezing heads and prebending; 8, hoisting to the conveying roller; 9, rolling to form opened pipes, then sealing and carrying out positioned welding; 10, hoisting welding parts of arc ignition plates and arc quenching plates; 11, welding the arc ignition plates and the arc quenching plates at two ends of a weld pass; 12, welding longitudinal seams; 13, cutting the arc ignition plates and the arc quenching plates; 14, expanding the ends of the pipes; 15, marking off and cutting transition end bevels; 16, inspecting; 17, abutting joint circular seam groups; 18, prewelding circular seams; 19, filling and welding cover surfaces; 20, welding under the cooperation of a robot; 21, transporting to an inspection station; 22, inspecting; 23, marking off straight openings and nasal openings, and checking; 24, cutting; and 25, storing. By using the process, the work efficiency of assembly line work is greatly increased, and the quality of products is greatly improved; meanwhile, the production cost is reduced, and the ordering production of the steel pipes is ensured.
Description
Technical field
The present invention relates to the steel pipe's production Wiring technology, relate in particular to a kind of offshore engineering structure steel pipe's production Wiring technology.
Background technology
At present, in Industrial Steel structure production process, steel-structure tube commonly used pre-formed generally has compression moulding and two kinds of modes of production of roll-forming.Wherein, the compression moulding thickness of steel pipe is generally thinner, is no more than 42mm, and steel pipe moulding external diameter is also less; Be generally less than 1.5m, and the socket open seam after the compression moulding is bigger, the tension difference in the pipe is bigger; Be not the circle of standard after the moulding, the postwelding weld stress is big, easily misalignment.Therefore, the moulding of steel-structure tube is mainly adopted and is rolled unit.
Coiled forming technology may further comprise the steps:
(1) at first, treating selvedge, chamfering are carried out in the steel plate both sides;
(2) then, plain plate is placed on the roller squeezer through the conglobate opening body of roll extrusion repeatedly;
(3) afterwards, make body get into the edges of boards roll squeezer, repeatedly roll extrusion is carried out on both sides, radian and caliber are coincide.
It is simply ripe that above-mentioned steel pipe moulding process has technology, and former is simple, in light weight, and batch is moderate, later maintenance cost is low; Product structure is regulated flexibly, and it is more to be fit to kind, and the product wall thickness range distributes bigger, the Forming Quality advantages of higher.But in the actual engineering of ocean engineering industry, general because the steel pipe specification is various, thickness range is bigger; Make edges of boards roll-in limited ability, and the related technology collocation with other of this kind shaping machine set is good inadequately; Automatization level is lower; Therefore, ubiquity work holdup phenomenon has reduced the effective time; And because the cross-operation of existing Production Line Configured is more, manual work is more, and round of visits is longer, so labor intensity of operating staff is big, has influenced the manufacturing schedule and the quality of steel pipe.
Summary of the invention
Main purpose of the present invention is to overcome the above-mentioned shortcoming that prior art exists, and a kind of offshore engineering structure steel pipe's production Wiring technology is provided, and it has adjusted steel pipe pipelining operation effectively; The edges of boards rolling process is changed to pre-bending technology, and be adjusted to before the rolling technology, like this; Not only expand the thickness of slab specification of roll-forming steel pipe, improved production technology, and; Each production link effectively is connected; Reduce labor intensity of operating personnel, improved construction environment, improved the operating efficiency and the product quality of pipelining greatly; Simultaneously, practiced thrift production cost, guaranteed that steel pipe's production carries out in order.
The objective of the invention is to realize by following technical scheme:
A kind of offshore engineering structure steel pipe's production Wiring technology is characterized in that: adopt following steps:
The first step: the raw-material material of steel plate, whole plate size are carried out verification and confirm;
Second step: the line of on whole steel plate, setting type indicates the bar piece number;
The 3rd step: after the line size of confirming to set type, bar piece number indicate, steel plate is cut;
The 4th step: steel plate is transported on the edge milling machines transmission running roller from the blanking zone;
The 5th step: steel plate is milled the limit;
The 6th step: steel plate is hung to prebending machine transmission running roller, and be adjusted to appropriate orientation on request;
The 7th step: regulate the steel plate amount of feeding, steel plate is carried out the both sides pressure head by rolling direction, and the setting radian is arrived in steel plate pre-bending;
The 8th step: the steel plate after the pre-bending is hung to veneer reeling machine transmission running roller, and steel plate is adjusted to appropriate orientation on request;
The 9th step: with the steel plate conglobate opening body of roll extrusion repeatedly, measure steel pipe body radian, after reaching body and setting radian, tack welding again heals up;
The tenth step: with the steel pipe handling after the moulding to draw, blow-out plate weld, and welding bead is adjusted to the top;
The 11 step: axially weld run-on tab and blow-out plate at place, steel pipe welding bead two ends;
The 12 step: the single-unit steel pipe is carried out longitudinal seam welding;
The 13 step: locate axial cutting arc-striking plate and blow-out plate at steel pipe welding bead two ends;
The 14 step: carry out the hole enlargement of single tube pipe end;
The 15 step: pipe end transition groove is carried out secondary setting-out, cutting work;
The 16 step: single-unit steel pipe vertical seam welding bead is tested;
The 17 step: the steel pipe circumferential weld is axially organized the butt joint farm labourer do;
The 18 step: accomplish the circumferential weld prewelding work of number joint steel pipe and several welding beads;
The 19 step: on the basis of steel pipe prewelding, carry out the filling welding and the cover welding of steel pipe circumferential weld;
The 20 goes on foot: walk abreast with above-mentioned the 17 step, the 18 step, the 19 step, the employing robot welding system is collaborative to weld steel pipe; And in the 11 step went on foot to the 20, all adopt transfermatic that steel pipe is transmitted, automatic charging, the automatic blanking of control steel pipe on transfermatic.
The 21 step: will weld steel pipe handling to the inspection point that accomplishes;
The 22 step: steel pipe is tested;
The 23 step: the steel pipe that needs otch is carried out straight mouthful, the line of saddle mouth, check;
The 24 step: pipe end is carried out straight mouthful and the cutting of saddle mouth;
The 25 step: the semi-finished product steel pipe to cutting is accomplished is stored.
In the said first step, whole steel plate four limits are equipped with the allowance of setting.
In said the 3rd step, the allowance of setting is all left on single steel plate four limits after the cutting.
In said the 5th step, at first, adopt the two-sided edge milling machines adjustment of numerical control steel plate location, carry, carry out steel plate minor face two side milling limits, the milling groove type is band root face V-type; Then, mill long limit, steel plate both sides again, the milling groove type is band root face V-type;
In said the 12 step, the groove of single-unit steel pipe vertical seam welding adopts big root face not have the gap double V-groove.
In said the 14 step, the whole operation process of single tube pipe end hole enlargement: (1) hangs steel pipe, (2) centering, and (3) load, (4) hole enlargement, (5) unloading; Then, turn around through (1) steel pipe again, (2) centering, (3) load, (4) hole enlargement, (5) unloading; Wherein, circle mode in school adopts machinery expanding.
In said the 16 step, be: adopt appearance test the single-unit steel pipe to be carried out longitudinal joint welding bead External Defect and check with magnetic powder test to the steel pipe content of testing.
In said the 17 step, when the steel pipe circumferential weld axially being organized the butt joint farm labourer and doing, the single-unit pipe is adjusted group successively to gap, wrong skin amount and linearity work, detects qualified after, carry out preheating again, organize spreading.
In said the 22 step; To the steel pipe content of testing be: appearance test, magnetic powder test are carried out the check of circumferential weld welding bead External Defect to steel pipe, and qualified back adopts the ultrasonic diffraction time difference method inspection technology that steel pipe is carried out longitudinal joint welding bead, the check of circumferential weld welding bead internal flaw.
The invention has the beneficial effects as follows:
1. plan the production line operation effectively, made full use of transmission line and power-equipment, each production link is connected effectively, improved semi-finished product delay situation in the workshop;
2. owing to be equipped with the school circular knitting machine, can obviously improve veneer reeling machine and roll the present situation that ability and other related process can not rational Match at present, reduced artificial input, improved the precision of steel pipe;
3. owing to be equipped with the circumferential weld special interest group, steel pipe circumferential weld spreading speed, efficient are doubled and redoubled to equipment, robot welding center;
4. owing to be equipped with the production information PMS; Can detect each big crucial production work station production status in real time; Simultaneously, the reviewer also can pass through retrieval dynamic network monitoring system and very first time understanding production situation, thereby rationally arranges Check-Out Time; Improve the mode of existing artificial inspection declaration effectively, more effectively match check technology, check system and whole production line;
From whole piece tubulation line layout, whole piece critical process flow process, each key job station equipment be equipped with, and aspect such as information process monitoring start with; To mill limit, transmission, longitudinal seam welding, hole enlargement, groove processing, the circumferential weld group is improved technologies such as spreadings; Significantly improve whole line production efficiency; Practice thrift cost, the assurance steel pipe's production is carried out in order.
Description of drawings:
Fig. 1 is the whole manufacturing flow chart of the present invention.
The specific embodiment
As shown in Figure 1, the present invention is that example adopts following steps with the structured steel pipe manufacturing process of Φ 610 * 16 * 12000mm:
The first step: examination of materials work station is set: the raw-material material of steel plate, whole plate size are carried out verification and confirm; Whole plate size is generally: 3000 * 16 * 12000mm, and four limits are equipped with certain allowance;
Second step: the steel plate cutting work station is set: the line of on whole steel plate, setting type indicates the bar piece number;
The 3rd step: steel plate cutting work station is set: the line size of confirming to set type, bar piece number indicate, and use cutting equipment that steel plate is cut, and the single steel plate size after the cutting is generally: 1920 * 16 * 3000mm, and certain allowance is all left on four limits;
The 4th step: steel plate is set has bad luck work station: steel plate is transported on the transmission running roller from the blanking zone; Present embodiment is: use overhead traveling crane that steel plate is hung to the two-sided edge milling machines transmission of numerical control running roller from the blanking zone;
The 5th step: steel plate is set mills the edge work station: at first, adopt the two-sided edge milling machines adjustment of numerical control steel plate location, carry, carry out steel plate minor face two side milling limits, the milling groove type is band root face V-type; Then, mill long limit, steel plate both sides again, the milling groove type is band root face V-type;
The 6th step: be provided with and have bad luck work station: the steel plate that the use overhead traveling crane will mill behind the limit hangs to steel plate prebending machine transmission running roller, and is adjusted to appropriate orientation on request;
The 7th step: steel plate pre-bending work station is set: regulate the steel plate amount of feeding through auxiliary equipment, steel plate is carried out the both sides pressure head by rolling direction, and the setting radian is arrived in steel plate pre-bending;
The 8th step: be provided with and have bad luck work station: the steel plate after using overhead traveling crane with pre-bending hangs to veneer reeling machine transmission running roller, and steel plate is adjusted to appropriate orientation on request;
The 9th step: steel plate is set rolls work station: the electric control system through veneer reeling machine is proofreaied and correct, fixing steel plate; Start its transmission system steel plate is delivered between three rollers with step-by-step system,, measure steel pipe body radian the steel plate conglobate opening body of roll extrusion repeatedly; After reaching requirement; Adopt the welding of healing up of the mode of spot welding again, the about 400mm of spot pitch, the steel pipe specification after rolling is Φ 610 * 16 * 3000mm;
The tenth step: be provided with and have bad luck work station: upset veneer reeling machine overturning side, the steel pipe handling after using overhead traveling crane with moulding is hauled out, hang to draw, blow-out plate welding workstation, and welding bead is adjusted to the top;
The 11 step: setting is drawn, blow-out plate welding workstation: axially weld run-on tab and blow-out plate at place, steel pipe welding bead two ends.
The 12 step: the longitudinal seam welding work station is set: the big root face welding procedure of existing single groove is adopted in the welding of single-unit steel pipe vertical seam, adopts the submerged-arc welding method, and groove is that big root face does not have the gap double V-groove; Exempt the back cover operation; Electric current 530A is adopted in the root bead welding, and voltage 30V welds fast 483mm/min; Fill welding current 600A, voltage 30V welds fast 397mm/min; Cover welding electric current 580A, voltage 30V welds fast 416mm/min;
The 13 step: setting is drawn, blow-out plate cutting work station: locate axial cutting arc-striking plate and blow-out plate at steel pipe welding bead two ends;
The 14 step: single tube hole enlargement work station is set: carry out the hole enlargement of single tube pipe end, whole operation process: (1) hangs steel pipe, (2) centering, and (3) load, (4) hole enlargement, (5) unloading; Then, turn around through (1) steel pipe again, (2) centering, (3) load, (4) hole enlargement, (5) unloading; Wherein, circle mode in school adopts machinery expanding, uses III rod assembly hole enlargement mould, and the steel pipe of this Φ 610 * 16 * 3000mm specification is carried out the two ends hole enlargement, and hole enlargement flat segments length is: 150mm, and both ends of the surface optional position diameter difference after the hole enlargement≤± 1mm;
The 15 step: the circumferential weld machining workstation is set: pipe end transition groove is carried out secondary setting-out, cutting work;
The 16 step: check one station is set: carry out welding bead appearance test of single-unit steel pipe vertical seam and MT (magnetic) check;
The 17 step: special interest group is set to work station: be applied to consistent the waiting wall thickness and do not wait the steel pipe of wall thickness right of external diameter; Use special interest group will count joint Φ 610 * 16 * 3000mm steel pipe circumferential weld to equipment and axially organize to spreading present embodiment: steel pipe is four joints to quantity.When the steel pipe circumferential weld axially being organized the butt joint farm labourer and doing, through hydraulic means and automatic testing tool the single-unit pipe is adjusted group successively to gap, wrong skin amount and linearity work, detects qualified after, carry out preheating again, organize spreading;
The 18 step: circumferential weld prewelding work station is set: accomplish the circumferential weld prewelding work of number joint steel pipe and several welding beads;
The 19 step: the girth welding work station is set: on the basis of steel pipe prewelding, carry out the filling welding and the cover welding of steel pipe circumferential weld;
The 20 the step: the robot welding system is set: the robot welding system be the second steel shaft to the spreading line, form complementation with " special interest group is to work station-circumferential weld prewelding work station-girth welding work station " production line; Simultaneously, but prewelding, fill the consistent steel pipe of welding internal diameter, also can weld this four joint Φ 610 * 16 * 3000mm.And through its hydraulic means and automatic testing tool the single-unit pipe is adjusted group successively to, wrong skin amount and linearity, detect qualified after, carry out preheating, prewelding again, then, adopt that three robot welding systems are collaborative to weld steel pipe; And in the 11 step went on foot to the 20, all adopt transfermatic that steel pipe is transmitted, automatic charging, the automatic blanking of control steel pipe on transfermatic.
The 21 step: be provided with and have bad luck work station: the steel pipe handling that the use overhead traveling crane will weld completion is to checking two stations;
The 22 step: check two stations are set: the steel pipe to Φ 610 * 16 * 12000mm carries out appearance test, MT (magnetic) check, and qualified back adopts TOFD (ultrasonic diffraction time difference method) inspection technology that steel pipe is carried out ultrasonic inspection.
The 23 step: the line work station is set: according to engineering project, the steel pipe that needs otch is carried out straight mouthful, the line of saddle mouth, check.
The 24 step: tubing cutting work station is set: pipe end is carried out straight mouthful and the cutting of saddle mouth.
The 25 step: store workstation is set: the semi-finished product steel pipe to cutting is accomplished is stored.
Draw, blow-out plate welding workstation, the longitudinal seam welding work station draws, blow-out plate cutting work station; Single tube hole enlargement work station, single tube circumferential weld machining workstation is checked a station; Special interest group is to work station, circumferential weld prewelding work station, girth welding work station; All adopt transfermatic to carry out the transmission of tube product between robot welding system's work station, at each work station, automatic charging, the automatic blanking of transfermatic control tube product.
The above; It only is preferred embodiment of the present invention; Be not that the present invention is done any pro forma restriction, every foundation technical spirit of the present invention all still belongs in the scope of technical scheme of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (9)
1. offshore engineering structure steel pipe's production Wiring technology is characterized in that: adopt following steps:
The first step: the raw-material material of steel plate, whole plate size are carried out verification and confirm;
Second step: the line of on whole steel plate, setting type indicates the bar piece number;
The 3rd step: after the line size of confirming to set type, bar piece number indicate, steel plate is cut;
The 4th step: steel plate is transported on the edge milling machines transmission running roller from the blanking zone;
The 5th step: steel plate is milled the limit;
The 6th step: steel plate is hung to prebending machine transmission running roller, and be adjusted to appropriate orientation on request;
The 7th step: regulate the steel plate amount of feeding, steel plate is carried out the both sides pressure head by rolling direction, and the setting radian is arrived in steel plate pre-bending;
The 8th step: the steel plate after the pre-bending is hung to veneer reeling machine transmission running roller, and steel plate is adjusted to appropriate orientation on request;
The 9th step: with the steel plate conglobate opening body of roll extrusion repeatedly, measure steel pipe body radian, after reaching body and setting radian, tack welding again heals up;
The tenth step: with the steel pipe handling after the moulding to draw, blow-out plate weld, and welding bead is adjusted to the top;
The 11 step: axially weld run-on tab and blow-out plate at place, steel pipe welding bead two ends;
The 12 step: the single-unit steel pipe is carried out longitudinal seam welding;
The 13 step: locate axial cutting arc-striking plate and blow-out plate at steel pipe welding bead two ends;
The 14 step: carry out the hole enlargement of single tube pipe end;
The 15 step: pipe end transition groove is carried out secondary setting-out, cutting work;
The 16 step: single-unit steel pipe vertical seam welding bead is tested;
The 17 step: the steel pipe circumferential weld is axially organized the butt joint farm labourer do;
The 18 step: accomplish the circumferential weld prewelding work of number joint steel pipe and several welding beads;
The 19 step: on the basis of steel pipe prewelding, carry out the filling welding and the cover welding of steel pipe circumferential weld;
The 20 goes on foot: walk abreast with above-mentioned the 17 step, the 18 step, the 19 step, the employing robot welding system is collaborative to weld steel pipe; And in the 11 step went on foot to the 20, all adopt transfermatic that steel pipe is transmitted, automatic charging, the automatic blanking of control steel pipe on transfermatic;
The 21 step: will weld steel pipe handling to the inspection point that accomplishes;
The 22 step: steel pipe is tested;
The 23 step: the steel pipe that needs otch is carried out straight mouthful, the line of saddle mouth, check;
The 24 step: pipe end is carried out straight mouthful and the cutting of saddle mouth;
The 25 step: the semi-finished product steel pipe to cutting is accomplished is stored.
2. offshore engineering structure steel pipe's production Wiring technology according to claim 1 is characterized in that: in the said first step, whole steel plate four limits are equipped with the allowance of setting.
3. offshore engineering structure steel pipe's production Wiring technology according to claim 1 is characterized in that: in said the 3rd step, the allowance of setting is all left on single steel plate four limits after the cutting.
4. offshore engineering structure steel pipe's production Wiring technology according to claim 1; It is characterized in that: in said the 5th step, at first, adopt the two-sided edge milling machines adjustment of numerical control steel plate location, carry; Carry out steel plate minor face two side milling limits, the milling groove type is band root face V-type; Then, mill long limit, steel plate both sides again, the milling groove type is band root face V-type.
5. offshore engineering structure steel pipe's production Wiring technology according to claim 1 is characterized in that: in said the 12 step, the groove of single-unit steel pipe vertical seam welding adopts big root face not have the gap double V-groove.
6. offshore engineering structure steel pipe's production Wiring technology according to claim 1 is characterized in that: in said the 14 step, the whole operation process of single tube pipe end hole enlargement: (1) hangs steel pipe, (2) centering, and (3) load, (4) hole enlargement, (5) unloading; Then, turn around through (1) steel pipe again, (2) centering, (3) load, (4) hole enlargement, (5) unloading; Wherein, circle mode in school adopts machinery expanding.
7. offshore engineering structure steel pipe's production Wiring technology according to claim 1 is characterized in that: in said the 16 step, to the steel pipe content of testing be: adopt appearance test with magnetic powder test the single-unit steel pipe to be carried out longitudinal joint welding bead External Defect and check.
8. offshore engineering structure steel pipe's production Wiring technology according to claim 1; It is characterized in that: in said the 17 step; When the steel pipe circumferential weld axially being organized butt joint farm labourer work; The single-unit pipe is adjusted group successively to gap, wrong skin amount and linearity work, detect qualified after, carry out again preheating, the group to spreading.
9. offshore engineering structure steel pipe's production Wiring technology according to claim 1; It is characterized in that: in said the 22 step; To the steel pipe content of testing be: appearance test, magnetic powder test are carried out the check of circumferential weld welding bead External Defect to steel pipe, and qualified back adopts the ultrasonic diffraction time difference method inspection technology that steel pipe is carried out longitudinal joint welding bead, the check of circumferential weld welding bead internal flaw.
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| CN103028887A (en) * | 2012-11-23 | 2013-04-10 | 南通太平洋海洋工程有限公司 | Method for replacing and welding diagonal-bracing steel tube of ocean engineering crane arm support |
| CN103252563A (en) * | 2013-05-24 | 2013-08-21 | 东方电气集团东方锅炉股份有限公司 | T-type joint single-side-welding double-side-forming groove machining technology method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103028887B (en) * | 2012-11-23 | 2014-11-26 | 南通太平洋海洋工程有限公司 | Method for replacing and welding diagonal-bracing steel tube of ocean engineering crane arm support |
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| CN103921068A (en) * | 2014-04-04 | 2014-07-16 | 中航沈飞民用飞机有限责任公司 | Single-curvature cover machining method |
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