CN104690437B - 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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- CN104690437B CN104690437B CN201510064795.7A CN201510064795A CN104690437B CN 104690437 B CN104690437 B CN 104690437B CN 201510064795 A CN201510064795 A CN 201510064795A CN 104690437 B CN104690437 B CN 104690437B
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- Prior art keywords
- ring flange
- welding
- melon lobe
- melon
- molectron
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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
-
- 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, the spherical bottom ring flange morpheme size of more particularly, to a kind of 5m level tank
Control method.
Background technology
The store-vessel bottom of carrier rocket is aluminum alloy junction component, and the rounded structure of bottom, by ring flange, 8 melon lobes, transition
Ring welding forms, and wherein, bottom is provided with multiple ring flanges, is distributed on the diverse location of bottom, ring flange is assemblied in melon
On lobe, and the small end near melon lobe.
Existing tank ring flange welding method is typically: first melon lobe is spliced into hemispherical bottom, utilizes specially afterwards
With tooling device, ring flange installing hole is opened up to each melon lobe, then make hemispherical bottom hanging using Special frock device, will
Ring flange is assembled at ring flange installing hole and fixes, then carries out manual welding.
But, above-mentioned this welding method ring flange need to carry out manual welding, welding quality be affected by human factors larger,
And welding process need to repeatedly play receipts arc, welding deformation is big.Particularly when tank a diameter of 5m rank, control and get up difficulty more
Greatly.
Content of the invention
The embodiment of the present invention provides a kind of control method of the spherical bottom ring flange morpheme size of 5m level tank, realizes to 5m
The control of level major diameter store-vessel bottom ring flange morpheme size.
The embodiment of the present invention provides a kind of control method of the spherical bottom ring flange morpheme size of 5m level tank, comprising:
By corresponding ring flange installing hole elastic conjunction on the ring flange being under part status and melon lobe；
Take rapid welding technique assemble welding melon lobe together and ring flange, form melon lobe ring flange molectron；
Ring flange melon lobe molectron is corrected shape, recovers ring flange melon lobe welding deformation amount.
A kind of control method of the spherical bottom morpheme size of 5m tank provided in an embodiment of the present invention, by each in welding
The position of individual process control melon lobe and ring flange, amount of contraction, deflection etc., to major diameter tank spherical bottom ring flange morpheme chi
Very little it is controlled.
Brief description
Fig. 1 is a kind of control method flow chart of the spherical bottom morpheme size of tank provided in an embodiment of the present invention.
Fig. 2 (a)～(d) is a kind of melon lobe provided in an embodiment of the present invention and ring flange combination diagram.
Fig. 3 is the structural representation of melon lobe school provided in an embodiment of the present invention shape frock.
Specific embodiment
Purpose, technical scheme and advantage for making the embodiment of the present invention are clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described it is clear that described embodiment is
The a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment being obtained under the premise of not making creative work, broadly falls into the scope of protection of the invention.
In order to adapt to the characteristic of the spherical bottom of 5m level major diameter tank, applicants have invented a kind of new ring flange welding side
Ring flange is welded by method first with single melon lobe, more multiple melon lobes are welded globulate bottom, The method avoids
Spherical for 5m level major diameter tank bottom is hung upside down welding, significantly reduces and frock is required and technological requirement.However, both making
In the ring flange welding method of applicant's invention, ring flange is welded on the melon lobe of large diameter thin wall structure, wants essence
Really the morpheme size of control flange disk, is still relatively difficult.Reason is: the diameter of the first, ring flange is little, and melon lobe arm is thick
Relatively thin, in the welding process with ring flange for the melon lobe, melon lobe deforms upon easily because welding is shunk；Secondth, spherical bottom
Diameter very big, precise positioning itself difficulty realizing ring flange morpheme size under this diameter is just very big.
For this reason, for the morpheme size controlling spherical bottom ring flange, needing the welding to the spherical bottom of whole tank
Journey is controlled.Fig. 1 is a kind of control method stream of tank provided in an embodiment of the present invention spherical bottom ring flange morpheme size
Cheng Tu, as shown in figure 1, the method comprises the steps.
Step 110: by the ring flange being under part status and its corresponding melon lobe elastic conjunction.
Specifically, the reserved assembling magnitude of interference between the ring flange installing hole on ring flange and melon lobe.Shown in Fig. 2 (a)
For ring flange, Fig. 2 (b) show the melon lobe offering ring flange installing hole；Ring flange interference is fixed on ring flange installing hole
Shown in the structure being formed afterwards such as Fig. 2 (c).Welding allowance for shrinkage can be reserved using elastic conjunction, reduce due to welding contraction
The melon lobe deformation leading to.In an embodiment of the present invention, described assembling magnitude of interference scope is 0.10-0.50mm.
Step 120: using outer addition of constraints, compress melon lobe and ring flange it is ensured that melon lobe and ring flange patch tire are good.Specifically may be used
To be, compress melon lobe and ring flange using melon lobe flange screw frock, external force constraint is added to melon lobe, can effectively weaken follow-up weldering
Connect the deformation that heat input causes to melon lobe.
Step 130: take rapid welding technique assemble welding melon lobe together and ring flange, form melon lobe ring flange group
Component.
In embodiments of the present invention, take the mode of the hanging weldering of tig between ring flange and ring flange installing hole.Tig is hanging
Weldering is the technology that the applicant has by oneself, and this technology has detailed explaining in another application documents that applicant submits on the same day
State.
When selection tig vacantly welds, need accurately to choose technological parameter according to the particularity of ring flange, technological parameter is slightly
Not right, then can lead to 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, take section by circumferential weld, carry out morpheme and Mechanics Performance Testing), obtains
Know morpheme and mechanical property preferable tig welding parameter under typical thickness, as shown in table 1.
Table 1 ring flange tig welding condition table
Step 140: ring flange melon lobe molectron welding deformation amount is corrected shape, recovers ring flange melon lobe welding deformation
Amount.
In an embodiment of the present invention, specific school shape process is: first to carrying out slight fever heating at melon lobe deformation, controls melon
The temperature on lobe surface is less than 80 degrees Celsius, in order to avoid temperature is too high produces impact to Al-alloy metal structure；Then adopt machinery
The mode tapping deforms to correct shape to melon lobe.Machinery taps and ring flange weld seam can be carried out with Stress Release and can also prolong
Exhibition weld seam, recovers ring flange, the welding deformation amount of melon lobe.In an embodiment of the present invention, the air-heater of constant temperature can be taken
Or electric roaster heats at melon lobe degeneration.
In an embodiment of the present invention, ring flange melon lobe molectron can be placed on and carry out as in the school shape frock of Fig. 3
Tap school shape.As shown in figure 3, this school shape frock is a semicircular arc.Melon lobe is disposed vertically such as this semicircular arc, allows this melon
Fitted with this semicircular arc in the back side of lobe.
Step 150: when melon lobe welding is assembled, treat melon lobe ring flange by the way of plug in alignment pin on welding mould tire
Molectron is positioned.It is specially plug in alignment pin on welding mould tire melon lobe ring flange molectron is positioned on theoretical position,
Melon lobe ring flange molectron is carried out with positioning and can improve assembly precision it is ensured that the morpheme size of ring flange.
Step 160: according to base and ring flange distributing position, to the multiple melon lobe ring flange molectrons constituting bottom
Carry out welding, form spherical bottom.Shown in the spherical bottom such as Fig. 2 (d) eventually forming.
In welding, need the welding order between each melon lobe ring flange molectron of making rational planning for, it is also desirable to right
Welding edge between melon lobe ring flange molectron carries out reserved welding contracted quantity, with ensure melon lobe welding complete rear stub point
Cloth radius is accurate.
The technical scheme of the embodiment of the present invention, started to control accessory size from the part stage, thus suppressing welding deformation,
Then respectively by compressing to ring flange, melon lobe, complete the combination of melon lobe ring flange using the welding method of less heat input
The welding of part, then corrects shape to melon lobe, ring flange molectron, finally the assembling of melon lobe is positioned, determines melon lobe welding
Sequentially, the many aspects such as preset welding contracted quantity are controlled to major diameter tank spherical bottom ring flange morpheme size.
Using above-mentioned welding mode, the welding deformation of melon lobe ring flange molectron, the shape of control flange disk can be reduced
Position size, realizes the control to major diameter store-vessel bottom ring flange morpheme size, especially suitable 5m diameter store-vessel bottom ring flange
The control of morpheme size.Using mode provided in an embodiment of the present invention, it is demonstrated experimentally that can be by the store-vessel bottom of a diameter of 5m
Ring flange morpheme size deviation controls within less than or equal to ± 5mm.
Above-described embodiment only technology design to illustrate the invention and feature, not in order to limit the present invention, all at this
Within bright spirit and principle, any modification of being made, equivalent etc., should be included within the scope of the present invention.
Claims (9)
1. a kind of control method of the spherical bottom ring flange morpheme size of 5m level tank is it is characterised in that include:
By corresponding ring flange installing hole elastic conjunction on the ring flange being under part status and melon lobe；
Take rapid welding technique assemble welding melon lobe together and ring flange, form melon lobe ring flange molectron；
Melon lobe ring flange molectron is carried out with welding deformation amount school shape, recovers the original type face of melon lobe ring flange；
According to base and ring flange distributing position, welding, shape are carried out to the multiple melon lobe ring flange molectrons constituting bottom
Globulate bottom.
2. method according to claim 1 is it is characterised in that the assembling magnitude of interference scope of described elastic conjunction is 0.10-
0.50mm.
3. method according to claim 1 is it is characterised in that described rapid welding technique is the Welder that tig vacantly welds
Skill.
4. method according to claim 3 is it is characterised in that the backing welding parameter of the hanging 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, wire feed rate is 500-1500mm/min, ar flow 10-15l/min.
5. method according to claim 1 is it is characterised in that described carry out welding deformation amount to melon lobe ring flange molectron
School shape includes:
First carry out slight fever heating at melon lobe deformation, after using machinery tap by the way of melon lobe welding deformation amount is corrected shape.
6. method according to claim 5 is it is characterised in that be disposed vertically semi arch by described melon lobe ring flange molectron
Shape frock, allows described melon lobe ring flange molectron to fit with described semicircular arc frock.
7. method according to claim 5 is it is characterised in that during to carrying out slight fever heating at melon lobe deformation, control described
At melon lobe deformation, surface temperature is less than 80 degrees Celsius.
8. method according to claim 1 it is characterised in that by ring flange and its corresponding melon lobe elastic conjunction it
Afterwards, further include:
Using outer addition of constraints, compress melon lobe and ring flange it is ensured that melon lobe and ring flange patch tire are good；And/or,
Before welding is carried out to the multiple melon lobe ring flange molectrons constituting bottom, further include:
Plug in alignment pin on welding mould tire the plurality of melon lobe is positioned on theoretical position.
9. method according to claim 8 is it is characterised in that entering to the multiple melon lobe ring flange molectrons constituting bottom
Before row welding, further comprise:
Welding contracted quantity is reserved to each melon lobe ring flange molectron welding edge；And/or
Determine the welding order between each melon lobe ring flange molectron.
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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104690437A CN104690437A (en) | 2015-06-10 |
| CN104690437B true 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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Families Citing this family (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 |
| 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 |
| CN115673691B (en) * | 2022-11-16 | 2023-07-18 | 兰州空间技术物理研究所 | Propellant storage tank flange shape and mounting hole precision mounting guaranteeing method |
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| JP5057161B2 (en) * | 2008-04-01 | 2012-10-24 | 株式会社三五 | Manufacturing method of welded joint |
| CN102615445A (en) * | 2012-04-25 | 2012-08-01 | 常熟市虞华真空设备科技有限公司 | Welding technique for flange and seal head |
| CN202621724U (en) * | 2012-05-09 | 2012-12-26 | 安徽心连心重型封头有限公司 | Scalloped segment head die |
| CN203331969U (en) * | 2013-07-03 | 2013-12-11 | 天津华涛汽车塑料饰件有限公司 | Glove box assembly |
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