CN104690437A - Method for controlling shapes, positions and sizes of flange plates at spherical bottom of 5M-level storage box - Google Patents
Method for controlling shapes, positions and sizes of flange plates at spherical bottom of 5M-level storage box Download PDFInfo
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- CN104690437A CN104690437A CN201510064795.7A CN201510064795A CN104690437A CN 104690437 A CN104690437 A CN 104690437A CN 201510064795 A CN201510064795 A CN 201510064795A CN 104690437 A CN104690437 A CN 104690437A
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- ring flange
- welding
- melon lobe
- melon
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Classifications
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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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
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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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Connection Of Plates (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
The invention provides a method for controlling the shapes, positions and sizes of flange plates at the spherical bottom of a 5M-level storage box, and aims to control the shapes, positions and sizes of the flange plates at the bottom of a large-diameter storage box. The method comprises the following steps: performing an interference fit between the flange plates in component states and corresponding flange plate mounting holes in melon petals; according to a quick welding technology, welding the assembled melon petals and flange plates to form melon petal-flange plate assembling units; sizing the melon petal-flange plate assembling units, and restoring the welding deformation of each flange plate and each melon petal.
Description
Technical field
The present invention relates to Rocket tank weldering spelling field, particularly relate to the control method of ring flange morpheme size at the bottom of the spherical case of a kind of 5M level tank.
Background technology
The store-vessel bottom of carrier rocket is aluminum alloy junction component, rounded structure at the bottom of case, is formed by ring flange, 8 melon lobes, transition rings weldings, wherein, at the bottom of case, be provided with multiple ring flange, be distributed on the diverse location at the bottom of case, ring flange is assemblied on melon lobe, and the small end of close melon lobe.
Existing tank ring flange welding method is normally: be first spliced at the bottom of hemispherical case by melon lobe, Special frock device is utilized to offer ring flange installing hole to each melon lobe afterwards, then Special frock device is utilized to make at the bottom of hemispherical case unsettled, ring flange be assembled to ring flange installing hole place and fix, then carrying out manual welding.
But above-mentioned this welding method ring flange need carry out manual welding, welding quality is affected by human factors comparatively large, and welding process need repeatedly play receipts arc, and welding deformation is large.Particularly when tank diameter is 5m rank, control difficulty larger.
Summary of the invention
The embodiment of the present invention provides the control method of ring flange morpheme size at the bottom of the spherical case of a kind of 5M level tank, realizes the control to 5M level major diameter store-vessel bottom ring flange morpheme size.
The embodiment of the present invention provides the control method of ring flange morpheme size at the bottom of the spherical case of a kind of 5M level tank, comprising:
By ring flange installing hole elastic conjunction corresponding with it on the ring flange that is under part status and melon lobe;
Take rapid welding technique assemble welding melon lobe together and ring flange, form melon lobe ring flange sub-assembly;
Ring flange melon lobe sub-assembly is corrected shape, recovers ring flange melon lobe welding deformation amount.
The control method of morpheme size at the bottom of the spherical case of a kind of 5M tank that the embodiment of the present invention provides, by in each process control melon lobe of welding and the position, amount of contraction, deflection etc. of ring flange, ring flange morpheme size at the bottom of the spherical case of major diameter tank is controlled.
Accompanying drawing explanation
The control method flow chart of morpheme size at the bottom of the spherical case of a kind of tank that Fig. 1 provides for the embodiment of the present invention.
A kind of melon lobe that Fig. 2 (a) ~ (d) provides for the embodiment of the present invention and ring flange combination schematic diagram.
The structural representation of the melon lobe school shape frock that Fig. 3 provides for the embodiment of the present invention.
Detailed description of the invention
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
In order to adapt to the characteristic at the bottom of the spherical case of 5M level major diameter tank, applicants have invented a kind of new ring flange welding method, namely first ring flange is welded with single melon lobe, again multiple melon lobe is welded at the bottom of spherical case, The method avoids reversal of the natural order of things welding at the bottom of the spherical case of 5m level major diameter tank, significantly reduce and frock is required and technological requirement.But both made, in the ring flange welding method of applicant's invention, ring flange to be welded on the melon lobe of large diameter thin wall structure, wanting the morpheme size of exact controllability orchid dish, is still more difficult.Reason is: the first, the diameter of ring flange is little, and melon lobe arm is thick thinner, and in the welding process of melon lobe and ring flange, melon lobe very easily shrinks due to welding and deformation occurs; The second, the diameter at the bottom of spherical case is very large, and the own difficulty of precise positioning realizing ring flange morpheme size under this diameter is just very large.
For this reason, in order to control the morpheme size of ring flange at the bottom of spherical case, the welding process at the bottom of to the spherical case of whole tank is needed to control.Fig. 1 is the control method flow chart of ring flange morpheme size at the bottom of the spherical case of a kind of tank that provides of the embodiment of the present invention, and as shown in Figure 1, the method comprises the steps.
Step 110: by the melon lobe elastic conjunction of the ring flange that is under part status and its correspondence.
Specifically, reserve between the ring flange installing hole on ring flange and melon lobe and assemble the magnitude of interference.Fig. 2 (a) is depicted as ring flange, and Fig. 2 (b) is depicted as the melon lobe offering ring flange installing hole; The structure formed after ring flange interference is fixed on ring flange installing hole is as shown in Fig. 2 (c).Adopt elastic conjunction can reserve welding allowance for shrinkage, reduce the melon lobe distortion caused due to welding contraction.In an embodiment of the present invention, described assembling magnitude of interference scope is 0.10-0.50mm.
Step 120: use outer addition of constraints, compresses melon lobe and ring flange, ensures that melon lobe and ring flange paste tire good.Can be specifically use melon lobe flange screw frock to compress melon lobe and ring flange, external force constraint is added to melon lobe, effectively can weaken the distortion that follow-up thermal weld stress causes melon lobe.
Step 130: take rapid welding technique assemble welding melon lobe together and ring flange, forms melon lobe ring flange sub-assembly.
In embodiments of the present invention, the mode of the unsettled weldering of TIG is taked between ring flange and ring flange installing hole.The unsettled weldering of TIG is the technology that the applicant has by oneself, has detailed elaboration in another application documents that this technology is submitted on the same day applicant.
When choosing the unsettled weldering of TIG, need accurately to choose technological parameter according to the particularity of ring flange, technological parameter is slightly not right, then can cause the change of ring flange commissure aluminium alloy capability, cause technology accident.Through inventor's numerous experiments room, experiment (chooses different TIG parameter welding flanges, by circumferential weld gets section, carry out morpheme and Mechanics Performance Testing), learn morpheme and the good TIG welding parameter of mechanical property under typical thickness, as shown in table 1.
Table 1 ring flange TIG welding condition table
Step 140: correct shape ring flange melon lobe sub-assembly welding deformation amount, recovers ring flange melon lobe welding deformation amount.
In an embodiment of the present invention, concrete school shape process is: first carry out low-grade fever heating to distortion place of melon lobe, and the temperature controlling melon lobe surface is no more than 80 degrees Celsius, has an impact to Al-alloy metal structure in order to avoid temperature is too high; Then the mode adopting machinery to knock is out of shape to correct shape to melon lobe.Machinery knocks and can carry out Stress Release and the weld seam that also can extend to ring flange weld seam, recovers the welding deformation amount of ring flange, melon lobe.In an embodiment of the present invention, the air-heater of constant temperature or electric roaster can be taked to heat sex change place of melon lobe.
In an embodiment of the present invention, ring flange melon lobe sub-assembly can be placed in the school shape frock as Fig. 3 and carry out knocking school shape.As shown in Figure 3, this school shape frock is a semicircular arc.Melon lobe is vertically placed as this semicircular arc, allows the back side of this melon lobe and this semicircular arc fit.
Step 150: when the welding of melon lobe is assembled, welding mould tire adopts the mode of plugging in alignment pin to treat melon lobe ring flange sub-assembly and positions.Being specially plug in alignment pin on welding mould tire is positioned on theoretical position by melon lobe ring flange sub-assembly, positions and can improve assembly precision, ensure the morpheme size of ring flange to melon lobe ring flange sub-assembly.
Step 160: according to base and ring flange distributing position, carries out welding to the multiple melon lobe ring flange sub-assemblies formed at the bottom of case, is formed at the bottom of spherical case.At the bottom of the spherical case finally formed as shown in Fig. 2 (d).
When welding, the welding order needing to make rational planning between each melon lobe ring flange sub-assembly, meanwhile, the welding edge between also needing melon lobe ring flange sub-assembly carries out reserved welding contracted quantity, accurate to ensure that the welding of melon lobe completes the distribution radius of rear stub.
The technical scheme of the embodiment of the present invention, from the part stage namely control accessory size, thus suppression welding deformation, then compress respectively by ring flange, melon lobe, use the welding method of less heat input to complete the welding of melon lobe ring flange sub-assembly, then melon lobe, ring flange sub-assembly are corrected shape, finally the assembling of melon lobe is positioned, determine melon lobe welding order, the many aspects such as preset welding contracted quantity control ring flange morpheme size at the bottom of the spherical case of major diameter tank.
Adopt above-mentioned welding mode, the welding deformation of melon lobe ring flange sub-assembly can be reduced, the morpheme size of control flange dish, realizes the control to major diameter store-vessel bottom ring flange morpheme size, is especially suitable for the control of 5M diameter store-vessel bottom ring flange morpheme size.Utilize the mode that the embodiment of the present invention provides, experiment proves, can be by diameter the ring flange morpheme dimensional discrepancy of the store-vessel bottom of 5M control being less than or equal to ± 5mm within.
Above-described embodiment is only for illustrating technical conceive of the present invention and feature, and not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a control method for ring flange morpheme size at the bottom of the spherical case of 5M level tank, is characterized in that, comprising:
By ring flange installing hole elastic conjunction corresponding with it on the ring flange that is under part status and melon lobe;
Take rapid welding technique assemble welding melon lobe together and ring flange, form melon lobe ring flange sub-assembly;
Welding deformation amount school shape is carried out to ring flange melon lobe sub-assembly, recovers the original profile of ring flange melon lobe.
2. method according to claim 1, is characterized in that, described assembling magnitude of interference scope is 0.10-0.50mm.
3. method according to claim 1, is characterized in that, described rapid welding technique is the welding procedure of the unsettled weldering of TIG.
4. method according to claim 3, is characterized in that, the backing welding parameter of the unsettled weldering of described TIG is welding current 100-180A, speed of welding 250-300mm/min, He flow 10-15L/Min; Cosmetic welding parameter is welding current 200-300A, speed of welding 100-160mm/min, and wire feed rate is 500-1500mm/min, Ar flow 10-15L/Min.
5. method according to claim 1, is characterized in that, describedly carries out welding deformation amount school shape to melon lobe ring flange sub-assembly and comprises:
First carry out low-grade fever heating to distortion place of melon lobe, the mode that rear employing machinery knocks corrects shape melon lobe welding deformation amount.
6. method according to claim 5, is characterized in that, described ring flange melon lobe sub-assembly is vertically placed semicircular arc frock, allows described ring flange melon lobe sub-assembly and described semicircular arc frock fit.
7. method according to claim 5, is characterized in that, when carrying out low-grade fever heating to distortion place of melon lobe, controls described melon lobe distortion place surface temperature and is no more than 80 degrees Celsius.
8. method according to claim 1, is characterized in that, after by the melon lobe elastic conjunction of ring flange and its correspondence, comprises further:
Use outer addition of constraints, compress melon lobe and ring flange, ensure that melon lobe and ring flange paste tire good; And/or,
Before welding is carried out to the multiple melon lobe ring flange sub-assemblies formed at the bottom of case, comprise further:
Alignment pin inserted by welding mould tire is positioned on theoretical position by described multiple melon lobe; And/or,
Ring flange melon lobe sub-assembly is being corrected shape, after recovering ring flange melon lobe welding deformation amount, is comprising further:
According to base and ring flange distributing position, welding is carried out to the multiple melon lobe ring flange sub-assemblies formed at the bottom of case, is formed at the bottom of spherical case.
9. method according to claim 8, is characterized in that, before carrying out welding to the multiple melon lobe ring flange sub-assemblies formed at the bottom of case, further comprises:
Welding contracted quantity is reserved to each melon lobe ring flange sub-assembly welding edge; And/or
Determine the welding order between each melon lobe ring flange sub-assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510064795.7A CN104690437B (en) | 2015-02-06 | 2015-02-06 | Method for controlling shapes, positions and sizes of flange plates at spherical bottom of 5M-level storage box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510064795.7A CN104690437B (en) | 2015-02-06 | 2015-02-06 | Method for controlling shapes, positions and sizes of flange plates at spherical bottom of 5M-level storage box |
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| CN104690437A true CN104690437A (en) | 2015-06-10 |
| CN104690437B CN104690437B (en) | 2017-02-01 |
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| CN201510064795.7A Active CN104690437B (en) | 2015-02-06 | 2015-02-06 | Method for controlling shapes, positions and sizes of flange plates at spherical bottom of 5M-level storage box |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107309565A (en) * | 2017-07-07 | 2017-11-03 | 天津航天长征火箭制造有限公司 | A kind of whole bottom state abutted flange disk lean and correct assembly welding method of Ф 3350mm ellipsoid bottoms |
| CN108907488A (en) * | 2018-07-31 | 2018-11-30 | 中南大学 | Large complicated curvature Member Welding clamp method |
| CN111069856A (en) * | 2019-12-28 | 2020-04-28 | 天津航天长征火箭制造有限公司 | Assembling welding and shape and position size control method for 5-meter-diameter cylinder section flange |
| CN114054936A (en) * | 2021-11-29 | 2022-02-18 | 天津航天长征火箭制造有限公司 | Low-stress shape-control assembling and welding method for closed circular seam flange |
| CN115673691A (en) * | 2022-11-16 | 2023-02-03 | 兰州空间技术物理研究所 | Propellant storage tank flange appearance and mounting hole precision mounting guaranteeing method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107309565A (en) * | 2017-07-07 | 2017-11-03 | 天津航天长征火箭制造有限公司 | A kind of whole bottom state abutted flange disk lean and correct assembly welding method of Ф 3350mm ellipsoid bottoms |
| CN108907488A (en) * | 2018-07-31 | 2018-11-30 | 中南大学 | Large complicated curvature Member Welding clamp method |
| CN108907488B (en) * | 2018-07-31 | 2020-03-17 | 中南大学 | Welding clamping method for large-scale complex curvature component |
| CN111069856A (en) * | 2019-12-28 | 2020-04-28 | 天津航天长征火箭制造有限公司 | Assembling welding and shape and position size control method for 5-meter-diameter cylinder section flange |
| CN114054936A (en) * | 2021-11-29 | 2022-02-18 | 天津航天长征火箭制造有限公司 | Low-stress shape-control assembling and welding method for closed circular seam flange |
| CN115673691A (en) * | 2022-11-16 | 2023-02-03 | 兰州空间技术物理研究所 | Propellant storage tank flange appearance and mounting hole precision mounting guaranteeing method |
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| CN104690437B (en) | 2017-02-01 |
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