CN109352194B - Welding method of pressure accumulator assembly - Google Patents
Welding method of pressure accumulator assembly Download PDFInfo
- Publication number
- CN109352194B CN109352194B CN201811487509.8A CN201811487509A CN109352194B CN 109352194 B CN109352194 B CN 109352194B CN 201811487509 A CN201811487509 A CN 201811487509A CN 109352194 B CN109352194 B CN 109352194B
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- Prior art keywords
- welding
- pressure accumulator
- mounting edge
- parts
- accumulator
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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
- B23K28/00—Welding or cutting not covered by any of the preceding groups, e.g. electrolytic welding
- B23K28/02—Combined welding or cutting procedures or apparatus
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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
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
-
- 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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Welding Or Cutting Using Electron Beams (AREA)
Abstract
The invention discloses a welding method of an accumulator assembly, which comprises the steps of polishing, assembling and positioning welding, part clamping and welding which are sequentially carried out, wherein three process blocks (3) are welded on the outer side of an installation edge (1) of an accumulator after the assembling and positioning welding; and when the parts are clamped, the clamping of the parts is completed on the welding flower disc through the universal pressing plate pressing process block (3). The invention can ensure that the end face runout of the mounting edge on the pressure accumulator is less than 0.4mm after the welding of the parts is finished, and the dimension L is ensured to be in a qualified range after the processing of the parts is finished.
Description
Technical Field
The invention belongs to the field of machining, and particularly relates to the field of welding.
Background
The accumulator subassembly (as figure 1) is installed the limit and the accumulator goes up the overcoat by the accumulator and adopts vacuum electron beam welding to accomplish, and during the welding, because the annular electron beam welding seam of part only has 2mm apart from the distance of installing the limit on the accumulator, if the part takes closing device or ordinary clamp plate to compress tightly the part, can form the interference to the welding seam, can't implement the welding to the part. In order to weld the parts, the parts are supported inside by a clamp and assembled on a welding chuck in a tensioning manner to be welded, and the specific welding process comprises the following steps: polishing, assembling and positioning welding, clamping a tool, clamping a part and welding. By adopting the process, the part cannot be compressed in the axial direction, after the welding of the part is completed, the end face runout of the mounting edge on the pressure accumulator is larger than 1mm, the upper end face of the mounting edge on the pressure accumulator is a rough surface, subsequent processing is not carried out, and the dimension L cannot be ensured in the subsequent processing process of the part, so that the part is unqualified.
Disclosure of Invention
The invention aims to provide a welding method of a pressure accumulator assembly, which is used for controlling the welding deformation of parts, ensuring that the end face runout of an installation edge on a pressure accumulator is less than 0.4mm after the parts are welded, and ensuring that the size L is in a qualified range after the parts are machined.
The invention is realized by the following technical scheme:
three process blocks are connected on the side surface of the mounting edge of the pressure accumulator in a welding mode before welding parts. During welding, the difference between the bottom surfaces of the process blocks and the bottom surface of the mounting edge on the pressure accumulator is not larger than 0.1mm, the three process blocks are tightly pressed on the welding chuck by adopting the universal pressing plate, welding is carried out on parts, welding deformation of the parts is controlled, after the parts are welded, the end face runout of the mounting edge on the pressure accumulator is smaller than 0.4mm, and after the parts are machined, the size L is ensured to be in a qualified range.
A welding method of an accumulator assembly comprises the steps of polishing, assembling and positioning welding, clamping parts and welding which are sequentially carried out, wherein three process blocks are welded on the outer side of an installation edge of an accumulator after the assembling and positioning welding; and when the parts are clamped, the clamping of the parts is completed on the welding flower disc through the universal pressing plate pressing process block.
The process block is a cubic block with the same material as the mounting edge of the pressure accumulator.
The height difference between the bottom surface of the process block and the bottom surface of the upper mounting edge of the pressure accumulator is not more than 0.1 mm.
And the assembly positioning welding adopts argon arc welding.
And the process block and the mounting edge on the pressure accumulator are welded by argon arc welding.
When the parts are clamped, the universal pressing plate compresses the process block to ensure that the excircle runout of the mounting edge on the pressure accumulator is not more than 0.2mm after the process block is welded on the chuck.
Compared with the existing welding method, the method of the invention can save the design and manufacturing cost of the support welding fixture in the part; after the method disclosed by the invention is adopted, the deformation of the part is controlled, the size L of the part is ensured, the processing qualified rate of the part is improved, and the production efficiency of the part is improved.
Drawings
FIG. 1 is a schematic view of a structure of a part to be welded;
FIG. 2 is a schematic structural diagram of a part after welding through a process block;
in the figure, 1-the pressure accumulator is provided with a mounting edge, 2-the pressure accumulator is provided with an outer sleeve, and 3-the process block.
Detailed Description
The technical solution of the present invention is further explained with reference to the accompanying drawings, but the claimed protection scope is not limited thereto;
taking fig. 1 as an example, the welding method of the invention comprises the specific flow of polishing, assembling and positioning welding, welding process blocks, clamping parts and welding, and comprises the following implementation steps:
1. polishing: polishing the inner and outer surfaces to be welded of the mounting edge 1 on the pressure accumulator, wherein the polishing area is 5 mm;
2. and (3) assembly positioning welding, namely performing argon arc welding assembly positioning welding on the upper mounting edge 1 of the pressure accumulator and the upper outer sleeve 2 of the pressure accumulator, wherein the welding parameters are as follows: welding current (a): 30-50, argon flow (L/min): front side: 8-10, reverse side: 6-8, the diameter (mm) of the cathode is phi 2;
3, welding a process block, namely performing argon arc welding positioning on the mounting edge 1 and the process block 3 on the pressure accumulator, wherein the material and the parts of the process block 3 are consistent to TC4, and the specification of the process block is a cube block with the size of 30mm multiplied by 20mm multiplied by 2mm, and the welding parameters are as follows: welding current (a): 40-60, argon flow (L/min): front side: 10-15, reverse side: 8-10, the diameter (mm) of the cathode is phi 2, the name and specification of the filler are TA7, phi 1.2-phi 1.6, and the process block 3 is welded in a manner of being uniformly distributed along the circumferential direction of the mounting edge 1 on the pressure accumulator;
4, clamping the part, namely pressing three process blocks 3 of the part on a disc chuck, wherein the excircle runout of an installation edge 1 on an aligning and pressing device is not more than 0.2 mm;
5, welding: the welding parameters of the vacuum electron beam welding part are as follows: acceleration voltage (KV): 60, adding a solvent to the mixture; electron beam current (mA):
the welding speed (mm/min) is 800; focusing current fh (ma): 1690; working distance (mm): 681; beam slope control(s): ascending: 0.10, descending: 0.20; welding vacuum degree (mbar) < 2 x 10-4。
Claims (4)
1. A method for welding a pressure accumulator assembly, the pressure accumulator assembly comprises a pressure accumulator upper mounting edge (1) and a pressure accumulator upper outer sleeve (2), the upper end surface of the pressure accumulator upper mounting edge (1) is a rough surface, and subsequent processing is not carried out,
polishing, namely polishing the inner and outer surfaces of the to-be-welded part of the mounting edge (1) on the pressure accumulator;
step two, assembling and tack welding, namely assembling and tack welding the upper mounting edge (1) of the pressure accumulator and the upper outer sleeve (2) of the pressure accumulator;
welding process blocks, namely welding the process blocks (3) and the mounting edge (1) on the pressure accumulator in a positioning manner, wherein the three process blocks (3) are welded in a manner of being uniformly distributed along the circumferential direction of the mounting edge (1) on the pressure accumulator;
clamping the parts, wherein the clamping of the parts is completed on the welding faceplate through a universal pressing plate pressing process block (3) when the parts are clamped, and the universal pressing plate pressing process block (3) ensures that the excircle runout of an installation edge (1) on the pressure accumulator is not more than 0.2mm after the parts are welded on the welding faceplate; the height difference between the bottom surface of the process block (3) and the bottom surface of the upper mounting edge (1) of the pressure accumulator is not more than 0.1 mm;
and fifthly, performing vacuum electron beam welding, wherein the distance between the annular electron beam welding seam and the mounting edge (1) on the pressure accumulator is only 2 mm.
2. A method of welding an accumulator assembly as claimed in claim 1, wherein: the process block (3) is a cubic block which is the same as the material of the mounting edge (1) on the pressure accumulator.
3. A method of welding an accumulator assembly as claimed in claim 1, wherein: and the assembly positioning welding adopts argon arc welding.
4. A method of welding an accumulator assembly as claimed in claim 1, wherein: the process block (3) and the pressure accumulator upper mounting edge (1) are welded by argon arc welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811487509.8A CN109352194B (en) | 2018-12-06 | 2018-12-06 | Welding method of pressure accumulator assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811487509.8A CN109352194B (en) | 2018-12-06 | 2018-12-06 | Welding method of pressure accumulator assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109352194A CN109352194A (en) | 2019-02-19 |
| CN109352194B true CN109352194B (en) | 2021-01-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811487509.8A Active CN109352194B (en) | 2018-12-06 | 2018-12-06 | Welding method of pressure accumulator assembly |
Country Status (1)
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| CN (1) | CN109352194B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005351297A (en) * | 2004-06-08 | 2005-12-22 | Nhk Spring Co Ltd | Welded joint and method of manufacturing the same |
| CN102000963A (en) * | 2010-11-04 | 2011-04-06 | 广东省韶铸集团有限公司 | Method for machining positioning holes and imaging holes on upper and lower end faces of C-shaped frame |
| CN102500916A (en) * | 2011-10-30 | 2012-06-20 | 国营红阳机械厂 | Welding tooling of aluminium-alloy rotary body part with N sections of curved buses and welding method |
| CN103586513A (en) * | 2013-11-12 | 2014-02-19 | 中国南方航空工业(集团)有限公司 | Method for processing precision holes in mounting edges of airplane turbine casing |
| CN104191095A (en) * | 2014-08-04 | 2014-12-10 | 贵州黎阳航空动力有限公司 | Welding process of large-diameter annular part |
| CN104475934A (en) * | 2014-11-20 | 2015-04-01 | 湖北三江航天江北机械工程有限公司 | Welding process for ensuring smooth transition and molding of ellipsoidal circular seam and auxiliary welding clamp thereof |
| CN105312862A (en) * | 2015-12-09 | 2016-02-10 | 贵州黎阳航空动力有限公司 | Processing technology of seal jacket assembly |
| CN107199430A (en) * | 2017-03-20 | 2017-09-26 | 西安航天动力机械厂 | One kind is used for high pressure vessel areole flange welding and assembles device |
-
2018
- 2018-12-06 CN CN201811487509.8A patent/CN109352194B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005351297A (en) * | 2004-06-08 | 2005-12-22 | Nhk Spring Co Ltd | Welded joint and method of manufacturing the same |
| CN102000963A (en) * | 2010-11-04 | 2011-04-06 | 广东省韶铸集团有限公司 | Method for machining positioning holes and imaging holes on upper and lower end faces of C-shaped frame |
| CN102500916A (en) * | 2011-10-30 | 2012-06-20 | 国营红阳机械厂 | Welding tooling of aluminium-alloy rotary body part with N sections of curved buses and welding method |
| CN103586513A (en) * | 2013-11-12 | 2014-02-19 | 中国南方航空工业(集团)有限公司 | Method for processing precision holes in mounting edges of airplane turbine casing |
| CN104191095A (en) * | 2014-08-04 | 2014-12-10 | 贵州黎阳航空动力有限公司 | Welding process of large-diameter annular part |
| CN104475934A (en) * | 2014-11-20 | 2015-04-01 | 湖北三江航天江北机械工程有限公司 | Welding process for ensuring smooth transition and molding of ellipsoidal circular seam and auxiliary welding clamp thereof |
| CN105312862A (en) * | 2015-12-09 | 2016-02-10 | 贵州黎阳航空动力有限公司 | Processing technology of seal jacket assembly |
| CN107199430A (en) * | 2017-03-20 | 2017-09-26 | 西安航天动力机械厂 | One kind is used for high pressure vessel areole flange welding and assembles device |
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| Publication number | Publication date |
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| CN109352194A (en) | 2019-02-19 |
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