CN107225358B - Jack cylinder barrel attachment welding method - Google Patents
Jack cylinder barrel attachment welding method Download PDFInfo
- Publication number
- CN107225358B CN107225358B CN201710633145.9A CN201710633145A CN107225358B CN 107225358 B CN107225358 B CN 107225358B CN 201710633145 A CN201710633145 A CN 201710633145A CN 107225358 B CN107225358 B CN 107225358B
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- Prior art keywords
- welding
- cylinder barrel
- attachment
- cutting ferrule
- cylinder
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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
- 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
- B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
- B23K37/0533—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor external pipe alignment clamps
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention discloses a kind of jack cylinder barrel attachment welding methods, mark attachment assembly boundary line and in length and breadth center line on cylinder barrel first, determine attachment welding position；The profiling cutting ferrule that two sides offer threaded hole is set on cylinder barrel again, makes profiling cutting ferrule close to the attachment to welding of cylinder mouth side, and the threaded hole line of centres of profiling cutting ferrule is centrally and perpendicular to attachment central point to welding and the cylinder barrel line of centres by cylinder barrel；Then bolt presses cylinder barrel is screwed in the threaded hole of profiling cutting ferrule two sides, and inner hole of cylinder is made to generate radial predeformation；80%Ar+20%CO is used later2Mixed gas arc welding matches ER50-6 Φ 1.2mm welding wire, carries out small specification to attachment and cylinder barrel and welds；After last position to be welded is cooled to room temperature, profiling cutting ferrule is removed, completes welding.The size distortion that the present invention solves the problems, such as that inner hole of cylinder is generated by welded attachment is overproof, and the total quality for improving product is horizontal, reduces product disqualification rate.
Description
Technical field
The present invention relates to jack manufacturing technology fields, must be in inner hole of cylinder finishing more particularly, to a kind of surface attachment
The jack cylinder barrel attachment welding method of welding is carried out after work.
Background technique
Leading to liquid seat in jack cylinder barrel outside weldings is a kind of common structure, and power fluid is entered in cylinder body by the interface
Portion.Due to needing to bear the hydraulic coupling of 30-40MPa, the requirement to weld seam herein is often very high.It generallys use around logical liquid
One lap welding of welding stitches the process program that it links together with cylinder barrel around seat, to reach sealing effect.Traditional Welder
Skill after the completion of leading to liquid seat with cylinder barrel welding, frequently results in inner hole of cylinder and occurs significantly since welding capacity is larger, heat input value is high
It deforms, is overproof.Therefore, the cylinder barrels attachmentes such as logical liquid seat, plinth are usually arranged in welding before finishing；But by structure
Influence, there are also the attachmentes such as the logical liquid seat of part jack, plinth must be arranged into finishing after welding, this will lead to cylinder
The welding deformation of cylinder is even overproof.
The deformation of this kind of cylinder barrel is specific as follows: inner hole of cylinder is along logical liquid seat and place cylinder barrel cross-section center line
Direction, generates a degree of contraction, and the central axial direction vertical with shrinkage direction, then can generate a degree of rise
Cylinder, a contracting one are risen, and entire cylinder barrel size is caused to become flat.The position that the welding influences is respectively positioned in static sealing surface, since size becomes
Shape is overproof, can generate adverse effect to sealing, seriously affect life of product, cause oil cylinder leakage；What is more, and deformation is serious
, cause cylinder barrel to be unable to complete assembly, generates waste product.
Summary of the invention
The present invention provides a kind of jack cylinder barrel attachment welding method, it is therefore intended that solves conventional bonding technique and is easy to cause
Cylinder barrel deformation influences the problem of product service life.
To achieve the above object, the present invention can take following technical proposals:
Jack cylinder barrel attachment welding method of the present invention, comprising the following steps:
The first step marks attachment assembly boundary line and in length and breadth center line on cylinder barrel, determines attachment welding position；
Second step is set with the profiling cutting ferrule that two sides offer threaded hole on cylinder barrel, makes profiling cutting ferrule close to cylinder mouth side
Attachment to welding, and the threaded hole line of centres of profiling cutting ferrule by cylinder barrel be centrally and perpendicular to attachment central point to welding with
The cylinder barrel line of centres；
Third step screws bolt presses cylinder barrel in the threaded hole of profiling cutting ferrule two sides, generates inner hole of cylinder radial pre-
Deformation；
4th step, using 80%Ar+20%CO2Mixed gas arc welding matches ER50-6 Φ 1.2mm welding wire, to attachment and
Cylinder barrel carries out small specification welding；
5th step after position to be welded is cooled to room temperature, removes profiling cutting ferrule, and welding is completed.
In order to play the role of fixing to cylinder barrel, the profiling cutting ferrule uses Q690 high-strength steel, thickness 40mm≤δ≤60mm,
It is conditioned to handle.
Caused cylinder holes ID distortion is welded in order to offset, makes the inner hole of cylinder radial direction predeformation amount 0.8-1.2mm.
The welding parameter of the heat input generated when in order to reduce welding, the small specification welding is as follows: weld preheating 60-
100 DEG C, welding current 140-160A, weldingvoltage 20-22V, speed of welding 200-220mm/min, thermal weld stress 0.7-
0.8KJ/mm。
The attachment is logical liquid seat or plinth.
Jack cylinder barrel attachment welding method provided by the invention makes inner hole of cylinder by being socketed profiling cutting ferrule on cylinder barrel
Radial predeformation is generated, in combination with small specification welding procedure, the heat input generated when welding is effectively reduced, solves inner hole of cylinder
The size distortion that generates due to welding the attachmentes such as logical liquid seat, overproof problem, the total quality of lifting jack cylinder barrel product is horizontal,
Reduce product disqualification rate.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of profiling cutting ferrule in the present invention.
The positional diagram of cylinder barrel, attachment, profiling cutting ferrule when Fig. 2 is present invention welding.
Fig. 3 is the left view of Fig. 2.
Specific embodiment
Logical liquid seat (or plinth etc., method is identical) is welded to welding of the invention below by cylinder barrel surface
Method does more detailed explanation.
As shown in Figure 1-3, the present invention welds logical liquid seat on jack cylinder barrel, the steps include:
The first step, marked on the cylinder barrel 1 using 27SiMn or 30CrMo material the assembled boundary line of logical liquid seat 2 and in length and breadth in
Heart line determines logical 2 welding position of liquid seat；
Second step, is set with the profiling cutting ferrule 3 that two sides as shown in Figure 1 offer threaded hole on cylinder barrel 1, and cylinder barrel cylinder diameter is
When 140-250mm, which can be used Q690 high-strength steel, and thickness δ is 40mm, conditioned to handle, can be to cylinder
Cylinder plays the role of well fixing；As shown in Figure 2,3, it is located at profiling cutting ferrule 3 below logical liquid seat 2 to welding by cylinder mouth side,
And the threaded hole line of centres a-a ' of profiling cutting ferrule 3 is centrally and perpendicular to logical 2 central point of liquid seat and cylinder barrel to welding by cylinder barrel 1
1 line of centres b-b '；
Third step screws bolt 4a, 4b in the threaded hole of 3 two sides of profiling cutting ferrule and compresses cylinder barrel 1, generates inner hole of cylinder
The radial predeformation of 1.0mm, i.e. inner hole of cylinder are shunk along the threaded hole line of centres a-a ' of profiling cutting ferrule 3, along logical liquid to welding
2 central points of seat and 1 line of centres b-b ' Xiang Shenchang of cylinder barrel, for offsetting the deformation quantity generated when welding；
4th step matches ER50-6 Φ 1.2mm welding wire, to logical liquid seat 2 using 80%Ar+20%CO2 mixed gas arc welding
Small specification welding is carried out with cylinder barrel 1；90 DEG C of weld preheating, welding current 150A, weldingvoltage 21V, speed of welding 215mm/
Min, thermal weld stress 0.704KJ/mm；The heat input generated when welding can be effectively reduced, the welding shape of inner hole of cylinder is mitigated
Variable；
5th step after position to be welded is cooled to room temperature, unscrews bolt 4a, 4b, removes profiling cutting ferrule 3, and welding is completed.Weldering
Seam allowance dimensional tolerance after connecing fully meets the requirement of the H9 grades of margins of tolerance, and product quality greatly improved.
Table 1 is that conventional method and the method for the invention welding point seat on cylinder barrel is respectively adopted, and is become to inner hole of cylinder
The related data that shape amount measures:
1 inner hole of cylinder deflection contrast table of table
It can be seen from Table 1 that welding method of the present invention greatly reduces the change of inner hole of cylinder compared with conventional method
Shape amount has fully met cylinder barrel weld size requirement, product quality greatly improved.
Claims (4)
1. a kind of jack cylinder barrel attachment welding method, it is characterised in that: the following steps are included:
The first step marks attachment assembly boundary line and in length and breadth center line on cylinder barrel, determines attachment welding position；
Second step is set with two sides on cylinder barrel and offers the profiling cutting ferrule of threaded hole, make profiling cutting ferrule close to cylinder mouth side to
Welding attachment, and the threaded hole line of centres of profiling cutting ferrule is centrally and perpendicular to attachment central point and cylinder barrel to welding by cylinder barrel
The line of centres；
Third step screws bolt presses cylinder barrel in the threaded hole of profiling cutting ferrule two sides, and inner hole of cylinder is made to generate radial predeformation,
The inner hole of cylinder radial direction predeformation amount is 0.8-1.2mm；
4th step, using 80%Ar+20%CO2Mixed gas arc welding matches ER50-6 Φ 1.2mm welding wire, to attachment and cylinder barrel into
The small specification welding of row；
5th step after position to be welded is cooled to room temperature, removes profiling cutting ferrule, and welding is completed.
2. jack cylinder barrel attachment welding method according to claim 1, it is characterised in that: the profiling cutting ferrule uses
Q690 high-strength steel, thickness 40mm≤δ≤60mm are conditioned to handle.
3. jack cylinder barrel attachment welding method according to claim 1, it is characterised in that: the weldering of the small specification welding
It is as follows to connect parameter: 60-100 DEG C of weld preheating, welding current 140-160A, weldingvoltage 20-22V, speed of welding 200-
220mm/min, thermal weld stress 0.7-0.8KJ/mm.
4. jack cylinder barrel attachment welding method according to claim 1, it is characterised in that: the attachment be logical liquid seat or
Plinth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710633145.9A CN107225358B (en) | 2017-07-28 | 2017-07-28 | Jack cylinder barrel attachment welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710633145.9A CN107225358B (en) | 2017-07-28 | 2017-07-28 | Jack cylinder barrel attachment welding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107225358A CN107225358A (en) | 2017-10-03 |
| CN107225358B true CN107225358B (en) | 2019-03-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710633145.9A Active CN107225358B (en) | 2017-07-28 | 2017-07-28 | Jack cylinder barrel attachment welding method |
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| Country | Link |
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| CN (1) | CN107225358B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115635169B (en) * | 2022-11-15 | 2023-07-21 | 郑煤机智鼎液压有限公司 | High-pressure oil cylinder accessory welding method and hydraulic oil cylinder |
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| CN201677155U (en) * | 2010-03-10 | 2010-12-22 | 冰人制冰系统设备(重庆)有限公司 | Supporting frame used for welding barrel |
| CN102009294A (en) * | 2010-08-31 | 2011-04-13 | 龙海燕 | Predeforming device for welding |
| CN202780348U (en) * | 2012-09-26 | 2013-03-13 | 中国十七冶集团有限公司 | Detachable reinforcing device for barrel assembly welding-deformation prevention |
| US8408529B2 (en) * | 2006-09-08 | 2013-04-02 | Arc Machines, Inc. | Clamp |
| CN203197517U (en) * | 2013-04-18 | 2013-09-18 | 中国化学工程第三建设有限公司 | Welding deformation prevention and correction device |
| CN204954273U (en) * | 2015-09-18 | 2016-01-13 | 兰州兰石重型装备股份有限公司 | Frock of being out of shape when preventing shell welding |
| CN204997296U (en) * | 2015-08-17 | 2016-01-27 | 广东永强奥林宝国际消防汽车有限公司 | Pipe fitting anti -deformation welding jig |
| CN205290271U (en) * | 2016-01-22 | 2016-06-08 | 郑州龙华机电工程有限公司 | Be used for pipeline welded external [line up] clamp that is geared to needs of job |
| CN205520147U (en) * | 2016-01-22 | 2016-08-31 | 孙大巍 | Pipeline preset device |
| CN206305680U (en) * | 2016-12-20 | 2017-07-07 | 谢晓 | A kind of deform-proof device of small square tubes soldering |
-
2017
- 2017-07-28 CN CN201710633145.9A patent/CN107225358B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8408529B2 (en) * | 2006-09-08 | 2013-04-02 | Arc Machines, Inc. | Clamp |
| CN201677155U (en) * | 2010-03-10 | 2010-12-22 | 冰人制冰系统设备(重庆)有限公司 | Supporting frame used for welding barrel |
| CN102009294A (en) * | 2010-08-31 | 2011-04-13 | 龙海燕 | Predeforming device for welding |
| CN202780348U (en) * | 2012-09-26 | 2013-03-13 | 中国十七冶集团有限公司 | Detachable reinforcing device for barrel assembly welding-deformation prevention |
| CN203197517U (en) * | 2013-04-18 | 2013-09-18 | 中国化学工程第三建设有限公司 | Welding deformation prevention and correction device |
| CN204997296U (en) * | 2015-08-17 | 2016-01-27 | 广东永强奥林宝国际消防汽车有限公司 | Pipe fitting anti -deformation welding jig |
| CN204954273U (en) * | 2015-09-18 | 2016-01-13 | 兰州兰石重型装备股份有限公司 | Frock of being out of shape when preventing shell welding |
| CN205290271U (en) * | 2016-01-22 | 2016-06-08 | 郑州龙华机电工程有限公司 | Be used for pipeline welded external [line up] clamp that is geared to needs of job |
| CN205520147U (en) * | 2016-01-22 | 2016-08-31 | 孙大巍 | Pipeline preset device |
| CN206305680U (en) * | 2016-12-20 | 2017-07-07 | 谢晓 | A kind of deform-proof device of small square tubes soldering |
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| Publication number | Publication date |
|---|---|
| CN107225358A (en) | 2017-10-03 |
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Effective date of registration: 20200722 Address after: 450016 No. ninth, 167 Avenue, Zhengzhou economic and Technological Development Zone, Henan Co-patentee after: Zhengmei Zhiding Hydraulic Co., Ltd Patentee after: ZHENGZHOU COAL MINING MACHINERY GROUP Co.,Ltd. Address before: 450016 No. ninth, 167 Avenue, Zhengzhou economic and Technological Development Zone, Henan Patentee before: ZHENGZHOU COAL MINING MACHINERY GROUP Co.,Ltd. |