CN102500657A - Method for correcting welding deformation of large plate-type structural piece - Google Patents
Method for correcting welding deformation of large plate-type structural piece Download PDFInfo
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- CN102500657A CN102500657A CN2011103410396A CN201110341039A CN102500657A CN 102500657 A CN102500657 A CN 102500657A CN 2011103410396 A CN2011103410396 A CN 2011103410396A CN 201110341039 A CN201110341039 A CN 201110341039A CN 102500657 A CN102500657 A CN 102500657A
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Abstract
The invention relates to a method for correcting the welding deformation of a large plate-type structural piece, which comprises the following steps that: the deformation quantity of a work piece is measured, and the maximum deformation position is marked; a certain number of process cushion blocks are arranged below the work piece with a certain spacing, and are adjusted to different heights; the top ends of all the process cushion blocks are connected, so that the work piece produces a certain anti-deformation quantity; the work piece is heated in a furnace, so that the work piece has preset plastic deformation; and the method is adopted for correcting the welding deformation of the large plate-type structural piece. The method for correcting the welding deformation of the large plate-type structural piece has the beneficial effects that: 1. the work piece is heated in the furnace and an anti-deformation method is also adopted, so that the correction precision requirements of the large work piece can be met, and the quality is stable; 2. the heat treatment equipment of a factory is utilized, no large hydraulic machinery needs to be purchased, so that investment is saved; and 3. the safety is high, and the operation level requirements on personnel can be reduced.
Description
Technical field
The present invention relates to the antidote of platy structure spare in the plant equipment, particularly a kind of antidote of large-scale platy structure spare welding deformation.
Background technology
The existing component of machine of taking welding method to make, its welding deformation can't be avoided.Welding deformation like macrotype platform shape parts is bigger, and the height of its straightening quality will directly influence the processing and the assembly precision of product, and the became uneven of platform panel will influence the stability and the security of overturn platform.
At present the welding deformation of small-scale structure spare can adopt hydraulic press directly to press shape to correct, but hydraulic press has certain requirement to the appearance and size of workpiece; For larger-size structural member, often carry out the method for local heat or press weight with flame at the workpiece deformation larger part by manual pick, utilize large-tonnage bridge crane to hang steel wire rope then and draw the method for workpiece to reach the purpose of rectification.The hydraulic press rectification effect is good, and the time spent is short, but equipment investment is big and workpiece is had the dimensions restriction; Ballast utilizes large-tonnage bridge crane extension steel wire rope to draw the method security of workpiece not high on workpiece; Manual pick is more commonly used to the method that workpiece carries out the local heat rectification with flame, but operator's technical ability and experience are had relatively high expectations, and not necessarily desirable to the bigger large-scale platy structure spare effect of structural rigidity.
Summary of the invention
Technical problem to be solved by this invention provides a kind of antidote of large-scale platy structure spare welding deformation, can reach good rectification effect, and processing ease.
For solving the problems of the technologies described above, the technical scheme that the present invention adopted is: a kind of antidote of large-scale platy structure spare welding deformation may further comprise the steps:
One, the deflection of measuring workpieces marks the maximum distortion position;
Two, below workpiece, place the technology cushion block of some by a determining deviation, and adjust it to the different height size, the top line through each technology cushion block is so that workpiece produces certain anti-deformation;
Three, the workpiece arcuate surface is placed on the technology cushion block down, guarantees that the maximum distortion place fully contacts with middle technology cushion block;
Four, on workpiece perk face, place ballast weight, after the placement location of weight should guarantee workpiece one end and mid portion and the technology cushion block fully contacts, the other end was the perk shape;
Five, carry out heat temperature raising in the stove, make workpiece produce preset plastic deformation;
Correct large-scale platy structure spare welding deformation through said method.
In the scheme of optimizing, in step 2, described anti-deformation is the springback capacity of the practical distortion amount+workpiece of the workpiece that records.
In the scheme of optimizing, in step 4, described weight weight is 0.5-10T.
In the scheme of optimizing, in step 4, be provided with the technology lacing wire between workpiece one end and the position that the technology cushion block contacts.
In the scheme of optimizing, in step 5, heating-up temperature is 580-640 ℃ in the stove.
The antidote of a kind of large-scale platy structure spare welding deformation provided by the invention has following beneficial effect:
1, in stove, heat and combine the reversible deformation method, can satisfy the rectification required precision of large-scale dimension workpiece, and steady quality.
2, utilize factory's current thermal treatment equipment, need not to buy large hydraulic machinery, practice thrift investment.
3, safe, can reduce operant level requirement to personnel.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is described further:
Fig. 1 is the front view of workpiece among the present invention.
Fig. 2 is the upward view of workpiece among the present invention.
Fig. 3 is overall structure sketch map among the present invention.
The specific embodiment
In Fig. 1-Fig. 3, a kind of antidote of large-scale platy structure spare welding deformation may further comprise the steps:
One, the deflection of measuring workpieces 1 marks the maximum distortion position;
Two, below workpiece 1, place the technology cushion block 2 of some by a determining deviation, and adjust it to the different height size, the top line through each technology cushion block 2 is so that workpiece 1 produces certain anti-deformation;
Three, workpiece 1 arcuate surface is placed on the technology cushion block 2 down, guarantees that the maximum distortion place fully contacts with middle technology cushion block 2;
Four, on workpiece 1 perk face, place ballast weight 4, after the placement location of weight 4 should guarantee workpiece 1 one ends and mid portion and technology cushion block 2 fully contacts, the other end was the perk shape;
Five, carry out heat temperature raising in the stove, make workpiece 1 produce preset plastic deformation;
Correct large-scale platy structure spare welding deformation through said method.
In the scheme of optimizing, in step 2, described anti-deformation is the springback capacity of the practical distortion amount+workpiece 1 of the workpiece 1 that records.
In the scheme of optimizing, in step 4, described weight 4 weight are 0.5-10T.
In the scheme of optimizing, in step 4, the end that workpiece 1 contacts with technology cushion block 2 is provided with the technology lacing wire.
In the scheme of optimizing, in step 5, heating-up temperature is 580-640 ℃ in the stove.
Embodiment:
Below, technical scheme of the present invention is done further to specify through the specific embodiment.
Rectification with certain hydraulic platform is an example; Workpiece 1 is that platform is the main bearing carrier of hydraulic platform; Maximum appearance and size (length * wide * height) is 11000 * 3500 * 115mm; For adopting the sequential welding weld seam to paste the steel plate (postwelding is machined into t30mm) of weldering one monoblock t35mm on the intensive hollow rectangle steel frame, be typical " platy structure spare ".Shown in Fig. 1, Fig. 2.The required precision on whole plane, processing back is flatness≤1.5mm, the platform above and below depth of parallelism≤0.5mm, and the thickness of last plane steel plate (t30mm) is poor≤3mm.If above-mentioned requirements can not be guaranteed, bring destabilizing factor will for the installation and the use of whole flat, contact applying in the time of also can causing its upset work with other mating surface not tight.Therefore platform requires postwelding to correct distortion, flatness＜3mm.So adopt method of the present invention, correct the reprocessing of distortion back successively according to the following steps:
The distortion situation of A, check measurement workpiece 1, and on workpiece 1, mark distortion flex point line.
B. on the desk-top flatcar 3 of heat-treatment furnace by a determining deviation (1500 ~ 2000mm) place 5 technology cushion blocks 2, its length should be basically and workpiece wide.Usually more intensive technology cushion block 2 has better effect, and is more level and smooth during workpiece 1 reversible deformation, considers in this example that cost performance has adopted 5 technology cushion blocks.
Utilize adjustment backing plate school to transfer the height dimension H (seeing H1 ~ 5 among Fig. 3) of each technology cushion block, make the line of technology cushion block upper surface form middle height, the curve that both sides are low.Guarantee the workpiece springback capacity of the anti-deformation B=A+5 ~ 15mm of end.Usually then institute's springback capacity that stays should be big more for workpiece " thin more ", and this example is got 10mm.
C. after technology cushion block school is transferred and finished, workpiece 1 upset arcuate surface is placed on the desk-top flatcar 3 down, its arch minimum point and middle cushion block is fully contacted and relative fixed.As shown in Figure 3.
D. on platform perk face, place ballast weight (0.5 ~ 10T); Deflection one end that the weight center of gravity can be suitable during lifting; After guaranteeing workpiece 1 one ends and mid portion and technology cushion block 2 fully contacting, the other end is the perk shape, in Fig. 3; In this example, weight 4 from left to right is followed successively by 5-8T, 3-5T, 3-5T, 3-5T, 8-10T.The end that workpiece contacts with technology cushion block 2 is provided with the technology lacing wire, promptly is welded to connect workpiece and technology cushion block 2 through floor, guarantees can only slide to the perk end after workpiece adds thermal deformation.
E. carry out heat temperature raising in the stove, heating-up temperature should guarantee that workpiece can produce certain plastic deformation and can not destroy its raw-material supply of material state again, for example: the state of former normalizing plate or modified plate.Selecting heating-up temperature in this example is 580 ~ 640 ℃, insulation 2 hours, heating-cooling speed≤100 ℃/hour, reach the temperature retention time of regulation after, workpiece answer furnace cooling to whole instrument all indicate≤300 ℃ after, the air cooling of can coming out of the stove is to room temperature.
F. after work-piece cools was come out of the stove, surperficial whole unevenness≤3 ~ 4mm was checked in backguy, reached processing request after the mode of the outer flame heat of local uneven place's employing stove is proofreaied and correct.
Claims (5)
1. the antidote of a large-scale platy structure spare welding deformation is characterized in that may further comprise the steps:
One, the deflection of measuring workpieces (1) marks the maximum distortion position;
Two, place the technology cushion block (2) of some by a determining deviation in workpiece (1) below, and adjust it to the different height size, the top line through each technology cushion block (2) is so that workpiece (1) produces certain anti-deformation;
Three, workpiece (1) arcuate surface is placed on the technology cushion block (2) down, guarantees that the maximum distortion place fully contacts with middle technology cushion block (2);
Four, on workpiece (1) perk face, place ballast weight (4), after the placement location of weight (4) should guarantee workpiece (1) one end and mid portion and technology cushion block (2) fully contacts, the other end was the perk shape;
Five, carry out heat temperature raising in the stove, make workpiece (1) produce preset plastic deformation;
Correct large-scale platy structure spare welding deformation through said method.
2. the antidote of a kind of large-scale platy structure spare welding deformation according to claim 1 is characterized in that: in step 2, described anti-deformation is the springback capacity of the practical distortion amount+workpiece (1) of the workpiece (1) that records.
3. the antidote of a kind of large-scale platy structure spare welding deformation according to claim 1 is characterized in that: in step 4, described weight (4) weight is 0.5-10T.
4. the antidote of a kind of large-scale platy structure spare welding deformation according to claim 1 is characterized in that: in step 4, be provided with the technology lacing wire between workpiece (1) one end and the position that technology cushion block (2) contacts.
5. the antidote of a kind of large-scale platy structure spare welding deformation according to claim 1 is characterized in that: in step 5, heating-up temperature is 580-640 ℃ in the stove.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110341039.6A CN102500657B (en) | 2011-11-02 | 2011-11-02 | Method for correcting welding deformation of large plate-type structural piece |
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| CN201110341039.6A CN102500657B (en) | 2011-11-02 | 2011-11-02 | Method for correcting welding deformation of large plate-type structural piece |
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| CN102500657B CN102500657B (en) | 2014-01-29 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102974660A (en) * | 2012-12-05 | 2013-03-20 | 南京钢铁股份有限公司 | Thick steel plate planishing technology |
| CN103357723A (en) * | 2013-07-22 | 2013-10-23 | 中联重科股份有限公司渭南分公司 | Method and device for correcting radian out-of-tolerance deformation of rolled piece |
| CN104084451A (en) * | 2014-06-30 | 2014-10-08 | 无锡市威海达机械制造有限公司 | Method for correcting plastic deformation of mechanical part |
| CN104174707A (en) * | 2014-07-25 | 2014-12-03 | 南车长江车辆有限公司 | Device and method for adjusting and correcting wagon wallboard welding deformation |
| CN104226731A (en) * | 2013-06-13 | 2014-12-24 | 宝山钢铁股份有限公司 | Method for straightening protection plate of work roll of heavy plate mill |
| CN104477186A (en) * | 2014-12-30 | 2015-04-01 | 辽宁忠旺集团有限公司 | Aluminum alloy train body end wall for subway and reverse deformation process thereof |
| CN107537888A (en) * | 2017-11-01 | 2018-01-05 | 江苏安荣电气设备股份有限公司 | A kind of curved built-in sliding chute shaping device |
| CN107838348A (en) * | 2017-11-14 | 2018-03-27 | 宜昌江峡船用机械有限责任公司 | Prevent the intelligent controlling device and control method of vexed car |
| CN109402362A (en) * | 2018-11-21 | 2019-03-01 | 中船海洋动力部件有限公司 | A kind of antidote of anchor fluke deformation |
| CN111347207A (en) * | 2020-04-02 | 2020-06-30 | 一汽奔腾轿车有限公司 | Welding fixture and welding method for compensating thermal deformation of patch board |
| CN117123848A (en) * | 2023-10-26 | 2023-11-28 | 常州钢劲型钢股份有限公司 | Mechanical correction device and method for U rib plate |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102974660A (en) * | 2012-12-05 | 2013-03-20 | 南京钢铁股份有限公司 | Thick steel plate planishing technology |
| CN104226731B (en) * | 2013-06-13 | 2016-08-10 | 宝山钢铁股份有限公司 | The method of heavy plate mill working roll backplate straightening |
| CN104226731A (en) * | 2013-06-13 | 2014-12-24 | 宝山钢铁股份有限公司 | Method for straightening protection plate of work roll of heavy plate mill |
| CN103357723A (en) * | 2013-07-22 | 2013-10-23 | 中联重科股份有限公司渭南分公司 | Method and device for correcting radian out-of-tolerance deformation of rolled piece |
| CN104084451A (en) * | 2014-06-30 | 2014-10-08 | 无锡市威海达机械制造有限公司 | Method for correcting plastic deformation of mechanical part |
| CN104084451B (en) * | 2014-06-30 | 2016-05-11 | 无锡市威海达机械制造有限公司 | The method that machine components plastic deformation is corrected |
| CN104174707A (en) * | 2014-07-25 | 2014-12-03 | 南车长江车辆有限公司 | Device and method for adjusting and correcting wagon wallboard welding deformation |
| CN104174707B (en) * | 2014-07-25 | 2016-04-27 | 南车长江车辆有限公司 | A kind of device and tune squaring method adjusting strong railway freight-car wallboard welding deformation |
| CN104477186A (en) * | 2014-12-30 | 2015-04-01 | 辽宁忠旺集团有限公司 | Aluminum alloy train body end wall for subway and reverse deformation process thereof |
| CN107537888A (en) * | 2017-11-01 | 2018-01-05 | 江苏安荣电气设备股份有限公司 | A kind of curved built-in sliding chute shaping device |
| CN107838348A (en) * | 2017-11-14 | 2018-03-27 | 宜昌江峡船用机械有限责任公司 | Prevent the intelligent controlling device and control method of vexed car |
| CN107838348B (en) * | 2017-11-14 | 2023-11-24 | 宜昌江峡船用机械有限责任公司 | Intelligent control device and control method for preventing vehicle from being stuffy |
| CN109402362A (en) * | 2018-11-21 | 2019-03-01 | 中船海洋动力部件有限公司 | A kind of antidote of anchor fluke deformation |
| CN109402362B (en) * | 2018-11-21 | 2020-10-02 | 中船海洋动力部件有限公司 | Method for correcting deformation of fluke |
| CN111347207A (en) * | 2020-04-02 | 2020-06-30 | 一汽奔腾轿车有限公司 | Welding fixture and welding method for compensating thermal deformation of patch board |
| CN117123848A (en) * | 2023-10-26 | 2023-11-28 | 常州钢劲型钢股份有限公司 | Mechanical correction device and method for U rib plate |
| CN117123848B (en) * | 2023-10-26 | 2024-04-05 | 常州钢劲型钢股份有限公司 | Mechanical correction device and method for U rib plate |
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