CN106271389A - Urban tram grooved rail moves flash construction method - Google Patents
Urban tram grooved rail moves flash construction method Download PDFInfo
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- CN106271389A CN106271389A CN201510250748.1A CN201510250748A CN106271389A CN 106271389 A CN106271389 A CN 106271389A CN 201510250748 A CN201510250748 A CN 201510250748A CN 106271389 A CN106271389 A CN 106271389A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/04—Flash butt welding
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B25/00—Tracks for special kinds of railways
- E01B25/28—Rail tracks for guiding vehicles when running on road or similar surface
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B5/00—Rails; Guard rails; Distance-keeping means for them
- E01B5/02—Rails
- E01B5/04—Grooved rails
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- Civil Engineering (AREA)
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- Arc Welding In General (AREA)
Abstract
The present invention relates to tramcar technical field of construction, it is specifically related to a kind of urban tram grooved rail and moves flash construction method, comprise the following steps: the first step, remove rail fastening and lay cylinder: removing the joint front to be welded whole fastener of rail, and remove the fastener in the range of joint rear rail 3.5m to be welded；Described front rail of square steel uses the mode padding pulley free to move longitudinally to ensure rail energy, and uniformly lays multiple cylinder under front rail of square steel, in order to front rail of square steel is longitudinally movable and ensures that the rail between adjacent two pulleys is the most sagging.Construction Principle of the present invention is simple, it is easy to operation, and efficiency of construction is high, reliable construction quality；There is higher economic benefit simultaneously, it is possible to meet tramcar high standard construction requirement.
Description
Technical field
The present invention relates to tramcar technical field of construction, be specifically related to a kind of urban tram grooved rail and move flash construction method.
Background technology
The development history of existing more than 100 year abroad of tramcar, its circuit is also by the initial seamed gapless track developing into today.
The welding of grooved rail mainly has the mobile welding of flash of light, narrow gap to hide and weld and aluminum weld abroad.
China's grooved rail tramcar is also in the starting stage, on February 17th, 2012, Muddy Southern District, Shenyang City modern tram engineering is formally started building, and has pulled open the prelude that China's grooved rail tramcar is built, planning four circuits of grooved rail tramcar altogether, the welding that circuit uses is aluminum weld.The advantage of grooved rail exothermic welding is that welding equipment is easy, the welding that can complete a joint in 10～15 minutes, the abnormity that can carry out between grooved rail with common rail welds, shortcoming is that joint made by alumino-thermal weldin intensity is less than flash welded tool joint, welding quality is easily affected by anthropic factor, and the cost of single welding point is higher than flash welding joint.
Suzhou High-Tech Zone tramcar Line 1 is Jiangsu Province's first bar modern tram line, is also the modern tram project of first National Development and Reform Committee reply, has significant and exemplary role in the whole nation.This engineering is located in Suzhou City, lays along major urban arterial highway and greenbelt, total track length about 18km, least radius 40m, maximum longitudinal grade 50 ‰.Track structure presses seamless process design, uses 60R2 groove-shape rail and track switch to lay without pillow formula solid concrete roabed first, and requires to use high-precision orbital Controling network and spark contact welding new technique to carry out track and mat formation.
Shutter contact welding automaticity is higher, and the weld interval of single joint is shorter, and 2～3min can complete the welding of a joint.The mechanical property of welding point is preferable, can reach more than the 90% of strength of parent, is suitable for large-scale welding.Along with the popularization and application in gapless track is built of the mobile steel rail flash equipment, flash obtains the highly recognition of unit in charge of construction with its feature welding the substantial amounts of labour force of high efficiency, high-quality and saving.
Application for grooved rail flash welding is still blank out at home, and have wide practical use, therefore it is highly desirable to design and a kind of can be simultaneously suitable for groove-shape rail and standard rail, urban tram grooved rail can be realized move the construction method of flash, provide for other grooved rail welding procedures from now on and instruct.
Summary of the invention
The problem existed for prior art, it is provided that Construction Principle is simple, easily operated, efficiency of construction is high, reliable construction quality, have higher economic benefit simultaneously, disclosure satisfy that the urban tram grooved rail of tramcar high standard construction requirement moves flash construction method.
The technical solution used in the present invention is:
A kind of urban tram grooved rail moves flash construction method, it is characterised in that comprise the following steps:
The first step, removes rail fastening and lays cylinder: removing the joint front to be welded whole fastener of rail, and remove the fastener in the range of joint rear rail 3.5m to be welded；Described front rail of square steel uses the mode padding pulley free to move longitudinally to ensure rail energy, and uniformly lays multiple cylinder under front rail of square steel, in order to front rail of square steel is longitudinally movable and ensures that the rail between adjacent two pulleys is the most sagging；
Second step, polishing rust cleaning: treat plumb joint and carry out polishing rust cleaning；
3rd step, welds and pushes away tumor: treat plumb joint and carry out welding and pushing away tumor；
4th step, normalizing: after butt welding, joint carries out normalized treatment；
5th step, polishing: the rail after connecing with polishing facility butt welding is polished.
As the preferred embodiment of the present invention, must carry out welding front rail inspection before described second step: first, check whether Rail Surface quality to be welded meets the technical standards；Secondly, checking whether end of rail to be welded bends, if bending, the method for aligning can be used to carry out it and align, for the end bending that cannot align, should be cut away the end of bending, the end face gradient cutting rear rail not should be greater than 0.8mm.
As the preferred embodiment of the present invention, check before welding machine weldering must be carried out before described 3rd step: answer butt welding machine main engine, hydraulic system, cooling system, generating set comprehensively to check, it is ensured that weld job after welding machine is working properly, can be carried out.
As the preferred embodiment of the present invention, in described second step, treating steel rail web polishing rust cleaning in the range of the 800mm of plumb joint two ends, surface and end face 80% through polishing inquire for metallic luster, must not have rust staining.
As the preferred embodiment of the present invention, the time to be welded of joint to be welded is more than when having water, oil, dirt immune after 24h or polishing, it is necessary to grinding process again.
As the preferred embodiment of the present invention, in described second step, should longitudinally polish along rail, forbid laterally to polish, rail head virgin curve shape to be kept, the polishing amount of mother metal is less than 0.2mm.
As the preferred embodiment of the present invention, in described second step, during polishing, emery wheel steadily should contact with rail, prevents emery wheel from beating；Must not overexert during polishing, prevent Rail Surface hot-spot blackout, turn blue.
As the preferred embodiment of the present invention, before described 3rd step, welding machine para-position to be carried out, after para-position completes, vehicle scotch block should be accomplished fluently rapidly, and should ensure that during weld job vehicle will not slip car phenomenon.
As the preferred embodiment of the present invention, before described 3rd step, need to carry out to press from both sides rail align: by clamping steel clamp two rail joints to be welded are both horizontally and vertically carried out straightening, while clamping rail, to Barebone by two rail to be welded along the centering of rail axis.
As the preferred embodiment of the present invention, after described 5th step, need to carry out joint defect detecting test: when connector temperature is below 40 DEG C, detect a flaw, and, before flaw detection, first surface of the work is processed so that it is reach surface non-corroding, speckle, oxide layer, oil and the existence of welding sputtering thing.
The technological principle of the present invention: based on flash welding principle, for 60R2 grooved rail sectional dimension, the asymmetric feature of web of the rail size and stock rail section, left and right, by butt welding machine handpiece structure, welding jaw, clamping cylinder, push away tumor system and the improvement of welding power, it is achieved that to two bursts, left and right cross section asymmetric groove-shape rail clamping, centering in the case of not turning welder head.And grooved rail welding tracking, polishing and normalizing process etc. are expanded research formation type grooved rail and move flash construction method.For coordinating the construction of mobile flash, have developed CFN290 hydraulic power diesel rail car and CFP7-00 type flat car delivery rail welding machine and meet 40m small curve radius, 50 ‰ longitudinal gradient traction travelings, it is achieved that the mobile welding in building site.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows:
1, Novel groove type rail moving type flash welder is used, the model of solderable rail: the groove-shape rails such as 59R1,59R2,60R1,60R2 (EN14811:2006+A1:2009), to the cross section asymmetric groove-shape rail clamping of two bursts, left and right, centering and welding in the case of not turning welder head, it is ensured that efficiency of construction.
2, welding tracking, polishing, the technique of normalizing are carried out innovation and improves, it is ensured that quality of weld joint and efficiency of construction.
3, it is designed with perfect to deliver rail welding machine and meeting 40m small curve radius, the diesel rail of 50 ‰ longitudinal gradients traction travelings and flat car.
4, Construction Principle of the present invention is simple, it is easy to operation, and efficiency of construction is high, reliable construction quality；There is higher economic benefit simultaneously, it is possible to meet tramcar high standard construction requirement.
5, during the present invention has been successfully applied to the construction of certain urban tram Line 1 36.3km gapless track, the welding procedure of 3200 joints is completed altogether.Total time of construction is controlled, and overall process occurs without quality, security incident, meets detail design requirement.
Accompanying drawing explanation
Fig. 1 is the construction process figure of the present invention
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention will be further described.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Embodiment
1
The construction process figure of the present invention is shown in accompanying drawing 1.
The construction procedure of the present invention is as follows:
One, preparation of construction
1, prepare before weldering
1) welding machine para-position.For coordinating the smooth enforcement of this engineering method, carry out welding machine para-position by 40m small curve radius, the diesel rail car of 50 ‰ longitudinal gradient traction travelings and flat car can be met.
2) joint front to be welded gapless line fastener all and in the range of about the 3m of joint rear, and aligning steel rail are removed.I.e. remove the joint front to be welded whole fastener of rail, and remove the fastener in the range of joint rear rail 3.5m to be welded；Described front rail of square steel and described rear rail of square steel rail the most to be welded
3) rail (criterion can be retained as with welder head) of end is fixed according to the suitable padded joint to be welded of sleeper and fastener type, joint mobile terminal to be welded (the most described front rail of square steel) rail uses the mode of pad pulley can longitudinally have by oneself mobile with guarantee mobile terminal rail, and face height is higher than fixing end rail about 45mm, to ensure the rail top glacing flatness after welding soldering tip welding.
4) cylinder is laid every 10m under the gapless line of joint mobile terminal to be welded (the most described front rail of square steel), in order to rail can vertically move and ensure that the rail between two pulleys is the most sagging.
2, check before rail weldering
1) check Rail Surface quality to be welded, TB/T1632.1-2005 " rail welding Part I: general technical specifications " Its Relevant Technology Standards should be met.
2) about inspection, stock unit rail joint joint dislocation amount is not more than 40mm.
3) if end of rail bending, the method for aligning can be used to carry out it and align, for the end of rail bending that cannot align, should the end of rail sawing of bending be fallen, after sawing, the end face gradient of rail not should be greater than 0.8mm.
3, check before welding machine weldering
Welding machine maintenance and maintenance have to comply with welding machine and auxiliary device maintenance code, and formulate corresponding safety regulation for operations, strict implement.Welding the welded type of parameters have a try test determine, management accreditation after, must not arbitrarily change.Operator, before start, answers butt welding machine main engine, hydraulic system, cooling system, generating set comprehensively to check, it is ensured that welding machine all working properly after can carry out weld job.
Two, polishing rust cleaning
1, groove-shape rail web of the rail inside height is little compared with standard gauge, and is affected by groove inside the web of the rail, and simple use hand grinder is unable to reach rust cleaning requirement, need to coordinate the multiple polishing facility such as abrasive machine, angle grinding machine polishing in upright arrangement, polishing, can be only achieved rust cleaning standard.
2, treating steel rail web rust cleaning in the range of the 800mm of plumb joint two ends during rust cleaning, surface and end face 80% through polishing inquire for metallic luster, must not have rust staining.The time to be welded of joint to be welded is more than when having water, oil, dirt immune after 24h or polishing, it is necessary to grinding process again.
3, polishing facility longitudinally should be polished along rail, forbids laterally to polish, rail head virgin curve shape to be kept, and the polishing amount of mother metal is less than 0.2mm.During polishing, emery wheel steadily should contact with rail, prevents emery wheel from beating.Must not overexert during polishing, prevent Rail Surface hot-spot from turning blue.
Three, welding machine para-position
1, per tour is contacted by shunter and coordinates, and transports movable welding trailer and work team operating personnel to weld job district.
2, advancing at the beginning of mobile rail-welding vehicle and position, first, the flat car being loaded with movable welding trailer is taken turns away from welding position about 3.2m.
3, after portable welding machine para-position completes, operating personnel should accomplish fluently rapidly vehicle scotch block, and should ensure that during weld job vehicle will not slip car phenomenon.
Four, folder rail aligns
1, by clamping steel clamp two rail joints to be welded are both horizontally and vertically carried out straightening.While clamping rail, can be by two one steel rails along the centering of rail axis to Barebone, alignment precision is 0.3mm.By 5cm Steel Ruler, operator check whether the working edge of rail, flange of rail face and rail angle align, as do not aligned, unclamp clamp and again align.
2, strictly carry out welding rail operation by rail welding machine safety regulation for operations.After rail to be welded enters welding machine, first have to during centering ensure rail surface and work surface smooth-going.After centering, acting surface dislocation deviation is not more than 0.5mm, and the flange of rail must not be ground one's teeth up and down, and Weld pipe mill is without departing from welding machine jaw center.
3, there is each face size deviation of rail according to supply of material technical conditions in groove-shape rail, maximum deviation can reach 3mm, so that tracking process tracking maximum deviation can reach 6mm, and multiple deviations such as rail height, perpendicularity, flange of rail width, glacing flatness exist simultaneously, it is impossible to the requirement of the tracking welding met.For this use during this engineering method tracking on electrode for diverse location deviation by pad copper sheet form with regulation rail align.On the premise of rail tolerance cannot meet welding aligning requirements, take the technological principle ensureing not grind one's teeth at the bottom of Rail.Because of the grooved rail flange of rail relatively thin (flange of rail edge only has 6mm), if having the flange of rail grind one's teeth up and down phenomenon occur, flange of rail welding combination area relatively little Yi leaves rail break hidden danger.
4, by the particular design to rail welding machine welding clamp mouth, the groove-shape rails such as the most solderable 59R1,59R2,60R1,60R2, but also achieve in the case of not turning welder head the cross section asymmetric groove-shape rail clamping of two bursts, left and right, centering and welding, it is ensured that efficiency of construction.
Five, weld and push away tumor
1, having to check for the supply voltage of welding machine before weldering, voltage value the most also should must check in the allowed band of regulation at any time.
2, rail clamps reliably, after centering, adjusts rail gap about 2mm, just can start welding.Welding, by programmable controller automatic control soldering electric current, voltage, displacement, pressure and other parameters, about two minutes weld intervals, is automatically performed by welding machine after having welded and pushes away tumor.Whole technical data of computer welding data collecting system acquisition welding process, draw welding parameter curve chart, and by being analyzed technical data, automatic decision welding is the most qualified.As welded, rail is defective must be welded again, and welding parameter should be by printing and by the way of hard disk preservation, it is ensured that the trackability of each welding point data.
3, welding machine monitoring personnel should conscientiously observe welding record, analyzes each welding point curve, and the curve that welds when passing through with type approval test carefully contrasts, and notes abnormalities and reports without delay to relevant department, must not change the technical parameter of welding machine without authority.
4, this grooved rail welding machine pushes away tumor system and has installed hydraulic motor additional, it is achieved that secondary pressurized pushes away tumor, increases and pushes away tumor power and ensure that and push away tumor success rate.When pushing away tumor, surplus should be not more than 3 mm, and rail mother metal should not clamp-oned and scratch to welding slag.Welding terminate after, should check immediately welding machine jaw position and rail jaw contact position with or without skid, burn, the welding point burnt by jaw should be judged to defective.As found there is scorch, push away that tumor pushes away thanks to, the defect such as crackle all should be judged to defective in welding point.As found, welding point working edge, flange of rail face, rail angle serious dislocation all should be judged to defective.
5, the conduction jaw surfaces of welding machine must be bright and clean, smooth, occurs should process in time during burn, changes if desired, can weld after replacing again.Often it is soldered a welding point reply jaw cleaning, dirt slag must not be left.
6, the parameter that welding sets should be examined before per tour, confirm without exception after can carry out next step operation.
Six, normalizing
1, short sleeper head on rail underlay, connects fired heater, flow-control case, filter, liquefied gas bottle, oxygen cylinder and cooling water pump sebific duct.Because of grooved rail flash be domestic first, grooved rail rail head width (113mm), the flange of rail, the web of the rail are thin, flame normalizing equipment without technology maturation, grooved rail flange of rail trigonum, the eyelet position of the web of the rail and the size that standard 75 rail fired heater is corresponding is improved by this engineering method by experiment, and uses " oxygen+liquefied gas " (tradition normalizing uses " oxygen+acetylene ") to realize the normalizing process of grooved rail flash welded tool joint.Grooved rail is relatively thin because of the flange of rail, the web of the rail, and normalizing temperature is wayward, uses " oxygen+liquefied gas " normalizing, and flame temperature ratio " oxygen+acetylene " is low, it is easy to the control of normalizing temperature, and liquefied gas low price.
2, being placed on rail by positive range, the cylinder that fired heater is placed on positive range is led on thick stick, adjusts heater and Rail Surface gap so that lock after gap uniformity, symmetry.
3, cooling water pump is started.
4, regulation heater locations, makes welding point be in heater oscillation center.
5, regulation bottled gas output pressure is at 0.15Mpa, and the output pressure of regulation bottle oxugen is at 0.6Mpa, and by control chamber high-speed switch valve regulation flow of lpg at 3.8 lattice (m3/h), oxygen flow is at 4.2 lattice (m3/h).Oxygen flow mixes up igniting, and after igniting, oxygen flow recovers regulation lattice number, shakes fire hunting frequency and controls at 60 times/about min, and amplitude of fluctuation is not less than 60mm.Control chamber acceleration switching valve should be simultaneously closed off after reaching normalizing temperature, but liquefied gas first closes the several seconds than oxygen.
6, normalizing heating initial period rail head surface temperature should be below 500 DEG C, and heating-up temperature should be 850 DEG C～950 DEG C.Photoelectric thermoscope probe should vertical tested Rail Surface, measure time of contact≤3S every time.
7, normalizing record is carried out.
Seven, postwelding corase grind
Steel rail grinding facility (portable grinder, profiling sander, angle grinding machine, straight grinder) rail grinding is utilized to weld the rail end face of pull head, side, flange of rail angle surface, unsuitable laterally polishing welding seams during polishing, emery wheel should not made to beat on rail thus impact rail mother metal, not make Rail Surface " turn blue ".If temperature is high when polishing, to suitably suspend polishing, polish again when proper temperature.
Eight, soldering tip fine grinding
1, due to the particularity of grooved rail cross sectional shape, the polishing to position have employed different grinding apparatus.First with rail end face and the inoperative limit of profiling sander polishing welding point, and carry out profile finishing；Utilize the bowl-type polisher polishing working edge of repacking, abrasive machine rail grinding rail tip circle cambered surface in upright arrangement and groove surface.Profile finishing should keep rail head to take turns.
2, soldering tip is respectively for polishing flat in the range of 35mm in the range of the flange of rail upper surface weld seam each 150mm in both sides and away from both sides flange of rail corner edge, must not beat thanks to, and polishing temperature not should be greater than 50 DEG C.
3, the length of profile finishing is not to be exceeded each 450mm in axis of a weld both sides, and profile finishing should not make welding point or rail produce any mechanical damage, and the method for profile finishing should not be used to correct the glacing flatness deviation exceeded standard and the joint misalignment exceeded standard.
Nine, flaw detection
Rail soldering tip is detected a flaw below 40 DEG C by welding point temperature.Seam inspection is divided into range estimation and instrument to detect.The defect of face of weld mainly has electric burn, scratches, damages, and can be judged by range estimation；Defect within weld seam mainly have burning, greyness, be mingled with, lack of penetration etc., judged by instrument.
Before flaw detection, first surface of the work is processed so that it is reaching the dirts such as surface non-corroding, speckle, oxide layer, oil and welding sputtering thing and exist, surface smoothness meets the requirements.So can ensure that the accuracy of flaw detection, and protect probe.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all any amendment, equivalent and improvement etc. made within the spirit and principles in the present invention, should be included within the scope of the present invention.
Claims (10)
1. a urban tram grooved rail moves flash construction method, it is characterised in that comprise the following steps:
The first step, removes rail fastening and lays cylinder: removing the joint front to be welded whole fastener of rail, and remove the fastener in the range of joint rear rail 3.5m to be welded；Described front rail of square steel uses the mode padding pulley free to move longitudinally to ensure rail energy, and uniformly lays multiple cylinder under front rail of square steel, in order to front rail of square steel is longitudinally movable and ensures that the rail between adjacent two pulleys is the most sagging；
Second step, polishing rust cleaning: treat plumb joint and carry out polishing rust cleaning；
3rd step, welds and pushes away tumor: treat plumb joint and carry out welding and pushing away tumor；
4th step, normalizing: after butt welding, joint carries out normalized treatment；
5th step, polishing: the rail after connecing with polishing facility butt welding is polished.
Urban tram grooved rail the most according to claim 1 moves flash construction method, it is characterised in that must carry out welding front rail inspection before described second step: first, check whether Rail Surface quality to be welded meets the technical standards；Secondly, checking whether end of rail to be welded bends, if bending, the method for aligning can be used to carry out it and align, for the end bending that cannot align, should be cut away the end of bending, the end face gradient cutting rear rail not should be greater than 0.8mm.
Urban tram grooved rail the most according to claim 1 moves flash construction method, it is characterized in that, check before must carrying out welding machine weldering before described 3rd step: answer butt welding machine main engine, hydraulic system, cooling system, generating set comprehensively to check, it is ensured that weld job after welding machine is working properly, can be carried out.
Urban tram grooved rail the most according to claim 1 moves flash construction method, it is characterized in that, in described second step, treat steel rail web polishing rust cleaning in the range of the 800mm of plumb joint two ends, surface and end face 80% through polishing inquire for metallic luster, must not have rust staining.
Urban tram grooved rail the most according to claim 4 moves flash construction method, it is characterised in that the time to be welded of joint to be welded is more than when having water, oil, dirt immune after 24h or polishing, it is necessary to grinding process again.
Urban tram grooved rail the most according to claim 4 moves flash construction method, it is characterised in that in described second step, longitudinally should polish along rail, forbid laterally to polish, rail head virgin curve shape to be kept, the polishing amount of mother metal is less than 0.2mm.
Urban tram grooved rail the most according to claim 4 moves flash construction method, it is characterised in that in described second step, during polishing, emery wheel steadily should contact with rail, prevents emery wheel from beating；Must not overexert during polishing, prevent Rail Surface hot-spot blackout, turn blue.
Urban tram grooved rail the most according to claim 1 moves flash construction method, it is characterised in that before described 3rd step, welding machine para-position to be carried out, after para-position completes, vehicle scotch block should be accomplished fluently rapidly, and should ensure that during weld job vehicle will not slip car phenomenon.
Urban tram grooved rail the most according to claim 1 moves flash construction method, it is characterized in that, before described 3rd step, need to carry out to press from both sides rail align: by clamping steel clamp two rail joints to be welded are both horizontally and vertically carried out straightening, while clamping rail, to Barebone by two rail to be welded along the centering of rail axis.
Urban tram grooved rail the most according to claim 1 moves flash construction method, it is characterized in that, after described 5th step, need to carry out joint defect detecting test: when connector temperature is below 40 DEG C, detect a flaw, and, before flaw detection, first surface of the work is processed so that it is reach surface non-corroding, speckle, oxide layer, oil and the existence of welding sputtering thing.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108746962A (en) * | 2018-06-29 | 2018-11-06 | 上海振华重工(集团)股份有限公司 | Portal crane box beam partition board flash butt welding method |
| CN111037074A (en) * | 2019-12-28 | 2020-04-21 | 江苏韦尔汀轨道工程技术有限公司 | Steel rail flash welding accurate checking and grinding process |
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| CN1370652A (en) * | 2000-03-18 | 2002-09-25 | 中铁宝桥股份有限公司 | Direct flash butt welding connection method between high manganese steel frog or manganese steel rail and common steel rail |
| CN1695868A (en) * | 2005-05-16 | 2005-11-16 | 马丁乙 | Method for carrying out locking weld of final closure for continuously welded rail track by using butt welder with moving flash |
| JP2011251335A (en) * | 2010-06-04 | 2011-12-15 | Nippon Steel Corp | Flash butt welding method for rail steel |
| CN202055128U (en) * | 2011-02-15 | 2011-11-30 | 中国铁道科学研究院金属及化学研究所 | Post-weld treating device used for on-line steel rail welding joint |
| CN202264020U (en) * | 2011-10-20 | 2012-06-06 | 成都艾格科技有限责任公司 | Steel rail inner action edge centering device of mobile steel rail flash welding machine |
| CN102635042A (en) * | 2012-04-12 | 2012-08-15 | 中铁十一局集团第三工程有限公司 | Method for welding seamless steel rail by moving flash welding on site |
| CN202591967U (en) * | 2012-05-28 | 2012-12-12 | 中铁二十三局集团有限公司 | Container type base flash rail welding integrated device |
| CN203451958U (en) * | 2013-07-24 | 2014-02-26 | 常州市瑞泰工程机械有限公司 | Flash welding machine for groove type steel rails |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108746962A (en) * | 2018-06-29 | 2018-11-06 | 上海振华重工(集团)股份有限公司 | Portal crane box beam partition board flash butt welding method |
| CN111037074A (en) * | 2019-12-28 | 2020-04-21 | 江苏韦尔汀轨道工程技术有限公司 | Steel rail flash welding accurate checking and grinding process |
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Application publication date: 20170104 |