CN104438462B - A kind of reversible deformation method for prefabricating of flange plate Welding Angular Deformation - Google Patents
A kind of reversible deformation method for prefabricating of flange plate Welding Angular Deformation Download PDFInfo
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- CN104438462B CN104438462B CN201410613186.8A CN201410613186A CN104438462B CN 104438462 B CN104438462 B CN 104438462B CN 201410613186 A CN201410613186 A CN 201410613186A CN 104438462 B CN104438462 B CN 104438462B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
- B21D1/02—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling by rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/003—Positioning devices
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Abstract
The present invention relates to a kind of reversible deformation method for prefabricating of flange plate Welding Angular Deformation, flange plate Welding Angular Deformation can effectively be solved large, middle flange plate postwelding flatness quality control difficulty is large, the problem that cannot adopt flange straightener to correct flange plate Welding Angular Deformation, technical scheme is to comprise the following steps: one, flange plate blanking; Two, guiding centering device is installed; Three, flange plate centering; Four, equipment debugging; Five, reversible deformation; Six, welding equipment, the inventive method is simple, flange plate reversible deformation total length uniformity, the uniformity reaches more than 99.7, reversible deformation precision is high, reach ± 0.5mm, efficiency of construction compared with prior art improve more than 90%, energy consumption and work consumption is low, control and facilitate, only need 1 people's control appliance, mechanized operation, reversible deformation quality significantly improves, the reversed deformation that can be widely used in the welded H section steel flange plate Welding Angular Deformation of and member specification super large high to flatness quality requirement, has good economic benefit and social benefit.
Description
Technical field
The present invention relates to stoplog processing technique field, particularly the reversible deformation method of the prefabricated Welding Angular Deformation of a kind of flange plate.
Background technology
In super, ultra supercritical thermal power unit boiler steel construction, stoplog is the most important super large member that bears boiler dynamic loading, is the core component in steel structure system. stoplog is superimposed with each other and connects to form by flange plate in upper and lower welded H section steel, and middle flange plate postwelding flatness quality is the key that stoplog is manufactured success or not, directly affects stoplog structural behaviour. in stoplog is manufactured, middle flange plate and web attachment weld welding capacity are large, and middle flange plate Welding Angular Deformation is large, and middle flange plate postwelding flatness quality control difficulty is large, and postwelding cannot adopt flange straightener to correct flange plate Welding Angular Deformation simultaneously. at present, large-scale welded H section steel flange plate reversed deformation is many adopts traditional-handwork technique after flange plate and web are assembled into welded H section steel, it is the reversible deformation of the prefabricated Welding Angular Deformation of process of flame heating or fixture top platen press and both combinations, because flame heating will cause flange plate deflection deformation and longitudinally wave transformation, the platen press reversible deformation of fixture top is rippled edge and laterally will producing three road bending deformations along flange plate is longitudinally inhomogeneous, these two kinds of methods are concerning the high member of flange plate postwelding flatness quality requirement, the effect of reversible deformation and DeGrain, postwelding correction workload is large, efficiency of construction is very low. therefore effectively solve, the angular deformation of flange plate postwelding is large, flange plate reversed deformation efficiency of construction is low and the ropy problem of reversible deformation, is the key issue that improves flange plate postwelding flatness quality and guarantee stoplog structural behaviour.
Summary of the invention
For above-mentioned situation, for overcoming the defect of prior art, the present invention's object is just to provide the reversible deformation method of the prefabricated Welding Angular Deformation of a kind of flange plate, flange plate Welding Angular Deformation can effectively be solved large, middle flange plate postwelding flatness quality control difficulty is large, the problem that cannot adopt flange straightener to correct flange plate Welding Angular Deformation.
The technical scheme that the present invention solves is:
A reversible deformation method for prefabricating for flange plate Welding Angular Deformation, comprises the following steps:
One, flange plate blanking
Utilize flame cutting machine cutting stock, make the surface of flange plate be smooth vertical bar shape;
Two, guiding centering device is installed
Guiding centering device comprises double-head cylinder, guide groove, guide rod, slide block, roll shaft and guiding centering wheel, guide groove has identical 2 groups, being symmetricly set on respectively the both sides of double-head cylinder and the longitudinal centre line of double-head cylinder overlaps with 2 groups of guide groove longitudinal centre lines, the guide rod coaxial with piston rod is housed respectively on the piston rod of double-head cylinder both sides, the outer end of 2 guide rod symmetries respectively be contained in 2 groups of slide blocks in guide groove and be fixed together, form slide block along a guide groove left side, right slide construction, the roll shaft that stretches out guide groove upper oral part is housed on slide block, stretch out warp beam on the roll shaft at guide groove position and taken up guiding centering wheel, guiding centering device has three covers at least, is welded and fixed respectively on the longeron that is installed on the forward and backward turning rolls of fluid pressure type H section steel flange arbor press, and the cross central line of guiding centering device overlaps with fluid pressure type H section steel flange arbor press longitudinal centre line,
Three, flange plate centering
Start double-head cylinder and stretch out piston rod, the guiding centering of guiding centering device is taken turns in range state, the flange plate that blanking is completed is placed on fluid pressure type H section steel flange arbor press turning rolls, start double-head cylinder and regain piston rod, the guiding centering wheel reverse sync of guiding centering device both sides is moved to flange plate lateral edge and contacted, the longitudinal centre line of flange plate is overlapped with the longitudinal centre line of fluid pressure type H section steel flange arbor press;
Four, equipment debugging
Primer fluid pressure type H section steel flange arbor press, operate by fluid pressure type H section steel flange arbor press operational procedure, startup rectification running roller moves to flange plate top surface edge and contacts, contact length 20～40mm, startup Live roller is moved upward to flange plate lower surface center and contacts, start Live roller and rotate and drive flange plate walking, in walking process without jam, without abnormal sound of movement;
Five, reversible deformation
Comprise the following steps:
(1) start Live roller and rotate and drive flange plate to run to flange plate end and align with Live roller center line, after stop Live roller rotation;
(2) start Live roller and upwards push up the flange plate center of pressing, the Live roller that moves up stops top pressure to certain distance, this displacement value a is less than predefined anti-deformation c, starting Live roller rotates forward and drives flange plate to walk forward after 200～400mm to stop operating, measure actual anti-deformation b with steel ruler, relatively, with the difference c-b of predetermined anti-deformation, determine reversible deformation springback capacity a-b simultaneously;
(3) again starting Live roller rotates backward and drives flange plate oppositely to run to after aliging with Live roller center line in flange plate end, to stop Live roller rotation, starting Live roller upwards pushes up to press flange plate center that Live roller is moved up to stop top after certain distance and presses, the distance value d=(c-b that this moves)+(a-b), start Live roller and rotate forward and drive flange plate to walk forward after 200～400mm to stop operating, measure actual anti-deformation and whether fixed anti-deformation is identical in advance with steel ruler;
(4) if difference repeating step again debug, until actual anti-deformation is with fixed anti-deformation is identical in advance;
(5) starting Live roller rotates backward and drives flange plate oppositely to run to after aliging with Live roller center line in flange plate end, to stop Live roller and rotate backward, start Live roller rotate forward drive flange plate forward continuous walking to flange plate stop by arbor press completely, start double-head cylinder and make the guiding centering wheel of guiding centering device unload flange plate after range state, complete reversible deformation overall process;
Six, welding equipment
Flange plate after reversible deformation and web are assembled to construction to be welded.
The inventive method is simple, flange plate reversible deformation total length uniformity, the uniformity reaches more than 99.7, reversible deformation precision is high, reach ± 0.5mm, efficiency of construction improves more than 90% compared with prior art, energy consumption and work consumption are low, it is convenient to control, only need 1 people's control appliance, mechanized operation, that prior art is beyond one's reach, special large-scale welded H section steel of having relatively high expectations for flange plate postwelding flatness stresses results very obvious, reach the unapproachable processing quality of existing flange plate reversible deformation technique, reversible deformation quality significantly improves, can be widely used in the reversed deformation of the welded H section steel flange plate Welding Angular Deformation of and member specification super large high to flatness quality requirement, there is good economic benefit and social benefit.
Brief description of the drawings
Fig. 1 is that flange plate of the present invention is welded and joins schematic diagram without the welded H section steel of reversible deformation.
Fig. 2 is the welded H section steel postwelding flange plate angular deformation schematic diagram of flange plate of the present invention without reversible deformation.
Fig. 3 is welded H section steel flange plate blanking schematic diagram of the present invention.
Fig. 4 is the structural front view (partly cut-away) of guiding centering device of the present invention.
Fig. 5 is that the A-A of Fig. 4 of the present invention is to cutaway view.
Fig. 6 is present device debugging schematic diagram.
Fig. 7 is that the B-B of Fig. 6 of the present invention is to schematic diagram.
Fig. 8 is flange plate reversed deformation schematic diagram of the present invention.
Fig. 9 is that the C-C of Fig. 8 of the present invention is to schematic diagram.
Figure 10 is flange plate reversible deformation design sketch of the present invention, and wherein a is stereogram, and b is cutaway view.
Figure 11 is reversed deformation flange plate welded H section steel assembling schematic diagram of the present invention.
Figure 12 is reversed deformation flange plate welded H section steel postwelding schematic diagram of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Provided by Fig. 1-12, as shown in Figure 1, the flange plate 1 that welded H section steel is contained in web two ends by web 2 is welded to connect and forms.
As Fig. 2 can clearly find out, after welded H section steel flange plate 1 welds with web 2 attachment welds, web 2 can produce the angular deformation to weld seam lateral bend, for eliminating this distortion, improve reversible deformation efficiency of construction, reversible deformation quality and flange plate postwelding flatness quality, the reversible deformation method for prefabricating that the invention provides a kind of flange plate Welding Angular Deformation, comprises the following steps:
One, flange plate blanking
Utilize flame cutting machine cutting stock, make the surface of flange plate be smooth vertical bar shape (as shown in Figure 3);
Two, guiding centering device (as shown in Figure 4, Figure 5) is installed
Guiding centering device comprises double-head cylinder 13, guide groove 9, guide rod 10, slide block 8, roll shaft 3 and guiding centering wheel 7, guide groove 9 has identical 2 groups, being symmetricly set on respectively the both sides of double-head cylinder 13 and the longitudinal centre line of double-head cylinder 13 overlaps with 2 groups of guide groove 9 longitudinal centre lines, on the piston rod of double-head cylinder 13 both sides, the guide rod coaxial with piston rod 10 is housed respectively, the outer end of 2 guide rod 10 symmetries respectively be contained in 2 groups of slide blocks 8 in guide groove 9 and be fixed together, form slide block along a guide groove left side, right slide construction, the roll shaft 3 that stretches out guide groove 9 upper oral parts is housed on slide block 8, stretch out on the roll shaft 3 at guide groove position, through bearing 6, guiding centering wheel 7 is housed, guiding centering device has three covers at least, be welded and fixed respectively on the longeron 17 that is installed on the forward and backward turning rolls 16 of fluid pressure type H section steel flange arbor press, the cross central line of guiding centering device overlaps with fluid pressure type H section steel flange arbor press longitudinal centre line, when practical operation, adjust centerline deviation and be less than 1mm, the deviation of the longitudinal centre line of its longitudinal centre line and fluid pressure type H section steel flange arbor press is not more than 2mm when guaranteeing flange plate 1 centering,
The piston rod of described double-head cylinder 13 both sides is fixed together with one end of guide rod 10 through attaching nut 12, and the other end of guide rod 10 is through the through hole on slide block 8 and lock fastening through nut 11;
On described guiding centering wheel 7, through screw 5, bearing cap 4 is housed;
The pressure limit of described double-head cylinder 13: 5～14MPa, diameter of piston rod: 30～40mm, cylinder diameter: 100～200mm;
Shown fluid pressure type H section steel flange arbor press is the Wuxi City Datang welding plant equipment production fluid pressure type H of Co., Ltd section steel flange arbor press;
Three, flange plate centering
Start double-head cylinder 13 and stretch out piston rod, the guiding centering of guiding centering device is taken turns in range state, the flange plate that blanking is completed is placed on fluid pressure type H section steel flange arbor press turning rolls 16, start double-head cylinder and regain piston rod, the guiding centering wheel reverse sync of guiding centering device both sides is moved to flange plate lateral edge and contacted, the longitudinal centre line of flange plate is overlapped with the longitudinal centre line of fluid pressure type H section steel flange arbor press;
Four, equipment debugging (as shown in Figure 6, Figure 7)
Primer fluid pressure type H section steel flange arbor press, operate by fluid pressure type H section steel flange arbor press operational procedure, startup rectification running roller 15 moves to flange plate top surface edge and contacts, contact length 20～40mm, startup Live roller 14 is moved upward to flange plate 1 lower surface center and contacts, start Live roller 14 and rotate and drive flange plates walking, in walking process without jam, without abnormal sound of movement;
Five, reversible deformation (as shown in Figure 8, Figure 9)
Comprise the following steps:
(1) start Live roller 14 and rotate and drive flange plates 1 to run to flange plate 1 end to align with Live roller 14 center lines, after stop Live roller 14 and rotate;
(2) start Live roller 14 and upwards push up flange plate 1 center of pressing, the Live roller 14 that moves up stops top pressure to certain distance, this displacement value a is less than predefined anti-deformation c, starting Live roller 14 rotates forward drive flange plate 1 and walks forward after 200～400mm and stop operating, measure actual anti-deformation b with steel ruler, relatively, with the difference c-b of predetermined anti-deformation, determine reversible deformation springback capacity a-b simultaneously;
(3) again starting Live roller 14 rotates backward and drives flange plate 1 oppositely to run to after aliging with Live roller 14 center lines in flange plate 1 end, to stop Live roller 14 and rotate, starting Live roller 14 upwards push up and presses flange plate 1 center that Live roller 14 is moved up to stop top pressure after certain distance, the distance value d=c-b+a-b that this moves, start Live roller 14 and rotates forward drive flange plate 1 and walk forward after 200～400mm and stop operating, measure actual anti-deformation and whether fixed anti-deformation is identical in advance with steel ruler;
(4) if difference repeating step 3 again debug, until actual anti-deformation is with fixed anti-deformation is identical in advance; In whole debug process, record the each upwards top of Live roller 14 and press mobile distance value, and sue for peace to such an extent that distance and e, wherein e are pressed in actual top c;
(5) starting Live roller 14 rotates backward and drives flange plate oppositely to run to after aliging with Live roller 14 center lines in flange plate 1 end, to stop Live roller 14 and rotate backward, start Live roller 14 rotates forward drive flange plate forward continuous walking to flange plate 1 stop by arbor press completely, start double-head cylinder 13 and make the guiding centering wheel 7 of guiding centering device after range state, unload flange plate 1, complete reversible deformation overall process; The flange plate of identical material, same size can carry out reversible deformation continuously, does not need to debug separately;
Six, welding equipment (as shown in Figure 10-12)
Flange plate after reversible deformation 1 and web 2 are assembled to construction to be welded.
Can clearly be found out by above-mentioned, existing flange plate reversible deformation technique is traditional-handwork technology, reverse fluid pressure type H section steel flange arbor press operation principle and the corollary apparatus of utilizing of the present invention adapts with it, easy flange plate guiding centering device can complete the reversible deformation technique of flange plate, it on flange plate reversible deformation prefabricating technique, is a qualitative leap, fill up the blank of flange plate reversible deformation technology, and flange plate reversible deformation total length uniformity, the uniformity reaches more than 99.7, reversible deformation precision is high, reach ± 0.5mm, efficiency of construction improves more than 90% compared with prior art, energy consumption and work consumption are low, it is convenient to control, only need 1 people's control appliance, mechanized operation, that prior art is beyond one's reach, special large-scale welded H section steel of having relatively high expectations for flange plate postwelding flatness stresses results very obvious, reach the unapproachable processing quality of existing flange plate reversible deformation technique, reversible deformation quality significantly improves, can be widely used in the reversed deformation of the welded H section steel flange plate Welding Angular Deformation of and member specification super large high to flatness quality requirement, there is good economic benefit and social benefit.
Claims (4)
1. a reversible deformation method for prefabricating for flange plate Welding Angular Deformation, is characterized in that, comprises the following steps:
One, flange plate blanking
Utilize flame cutting machine cutting stock, make the surface of flange plate be smooth vertical bar shape;
Two, guiding centering device is installed
Guiding centering device comprises double-head cylinder (13), guide groove (9), guide rod (10), slide block (8), roll shaft (3) and guiding centering wheel (7), guide groove (9) has identical 2 groups, being symmetricly set on respectively the both sides of double-head cylinder (13) and the longitudinal centre line of double-head cylinder (13) overlaps with 2 groups of guide grooves (9) longitudinal centre line, on the piston rod of double-head cylinder (13) both sides, the guide rod coaxial with piston rod (10) is housed respectively, the symmetrical outer end of 2 guide rods (10) is fixed together with the slide block (8) being contained in 2 groups of guide grooves (9) respectively, form slide block along a guide groove left side, right slide construction, the roll shaft (3) that stretches out guide groove (9) upper oral part is housed on slide block (8), the roll shaft (3) that stretches out guide groove position is above equipped with guiding centering wheel (7) through bearing (6), guiding centering device has three covers at least, be welded and fixed respectively on the longeron (17) that is installed on the forward and backward turning rolls (16) of fluid pressure type H section steel flange arbor press, the cross central line of guiding centering device overlaps with fluid pressure type H section steel flange arbor press longitudinal centre line,
Three, flange plate centering
Start double-head cylinder (13) and stretch out piston rod, the guiding centering of guiding centering device is taken turns in range state, the flange plate that blanking is completed is placed on fluid pressure type H section steel flange arbor press turning rolls (16), start double-head cylinder and regain piston rod, the guiding centering wheel reverse sync of guiding centering device both sides is moved to flange plate lateral edge and contacted, the longitudinal centre line of flange plate is overlapped with the longitudinal centre line of fluid pressure type H section steel flange arbor press;
Four, equipment debugging
Primer fluid pressure type H section steel flange arbor press, operate by fluid pressure type H section steel flange arbor press operational procedure, startup rectification running roller (15) moves to flange plate top surface edge and contacts, contact length 20～40mm, startup Live roller (14) is moved upward to flange plate (1) lower surface center and contacts, start Live roller (14) and rotate and drive flange plate walking, in walking process without jam, without abnormal sound of movement;
Five, reversible deformation
Comprise the following steps:
(1) start Live roller (14) and rotate and drive flange plate (1) to run to flange plate (1) end and align with Live roller (14) center line, after stop Live roller (14) rotation;
(2) start Live roller (14) and upwards push up flange plate (1) center of pressing, the Live roller (14) that moves up stops top pressure to certain distance, this displacement value a is less than predefined anti-deformation c, starting Live roller (14) rotates forward drive flange plate (1) and walks forward after 200～400mm and stop operating, measure actual anti-deformation b with steel ruler, relatively, with the difference c-b of predetermined anti-deformation, determine reversible deformation springback capacity a-b simultaneously;
(3) again starting Live roller (14) rotates backward and drives flange plate (1) oppositely to run to after aliging with Live roller (14) center line in flange plate (1) end, to stop Live roller (14) rotation, starting Live roller (14) upwards push up and presses flange plate (1) center that Live roller (14) is moved up to stop top pressure after certain distance, the distance value d=(c-b that this moves)+(a-b), starting Live roller (14) rotates forward drive flange plate (1) and walks forward after 200～400mm and stop operating, measure actual anti-deformation and whether fixed anti-deformation is identical in advance with steel ruler,
(4) if difference repeating step (3) again debug, until actual anti-deformation is with fixed anti-deformation is identical in advance;
(5) starting Live roller (14) rotates backward and drives flange plate oppositely to run to after aliging with Live roller (14) center line in flange plate (1) end, to stop Live roller (14) and rotate backward, start Live roller (14) rotates forward drive flange plate forward continuous walking to flange plate (1) stop by arbor press completely, start double-head cylinder (13) and make the guiding centering wheel (7) of guiding centering device after range state, unload flange plate (1), complete reversible deformation overall process;
Six, welding equipment
Flange plate after reversible deformation (1) and web (2) are assembled to construction to be welded.
2. the reversible deformation method for prefabricating of flange plate Welding Angular Deformation according to claim 1, it is characterized in that, the piston rod of the double-head cylinder described in step 2 (13) both sides is fixed together with one end of guide rod (10) through attaching nut (12), and the other end of guide rod (10) is through the through hole on slide block (8) and lock fastening through nut (11).
3. the reversible deformation method for prefabricating of flange plate Welding Angular Deformation according to claim 1, is characterized in that, the guiding centering wheel (7) described in step 2 is upper is equipped with bearing cap (4) through screw (5).
4. the reversible deformation method for prefabricating of flange plate Welding Angular Deformation according to claim 1, is characterized in that, the pressure limit of the double-head cylinder described in step 2 (13): 5～14MPa, diameter of piston rod: 30～40mm, cylinder diameter: 100～200mm.
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| CN201410613186.8A CN104438462B (en) | 2014-11-05 | 2014-11-05 | A kind of reversible deformation method for prefabricating of flange plate Welding Angular Deformation |
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| CN109304384B (en) * | 2018-12-07 | 2024-04-05 | 中冶建工集团有限公司 | Correcting device and correcting method for welding combination T-shaped steel column |
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| FR3097800B1 (en) | 2019-06-27 | 2022-09-30 | Safran Aircraft Engines | METHOD FOR MANUFACTURING A CASING FOR A TURBOMACHINE AND TOOLS FOR ITS IMPLEMENTATION |
| CN111203612A (en) * | 2020-01-17 | 2020-05-29 | 上海惠元机械制造有限公司 | Steel plate welding method |
| CN112139765B (en) * | 2020-09-11 | 2022-04-05 | 长江精工钢结构(集团)股份有限公司 | Reverse deformation correction process for narrow-section H steel |
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