CN104259649A - Friction welding method of tower crane standard section web member - Google Patents
Friction welding method of tower crane standard section web member Download PDFInfo
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- CN104259649A CN104259649A CN201410355988.3A CN201410355988A CN104259649A CN 104259649 A CN104259649 A CN 104259649A CN 201410355988 A CN201410355988 A CN 201410355988A CN 104259649 A CN104259649 A CN 104259649A
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- friction
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- steel pipe
- web member
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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
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
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- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention discloses a friction welding method of a tower crane standard section web member. The web member is formed by welding steel pipes and an end plate. The friction heating process comprises a primary friction stage and a secondary friction stage; the rotating speed of a rotating main shaft in the primary friction stage is equal to that of a rotating main shaft in the secondary friction stage, and primary friction pressure and friction time are fixed; secondary friction pressure is larger than the primary friction pressure and is fixed, and when the total friction deformation of the primary friction stage and the secondary friction stage reaches the preset value, heating in the secondary friction stage is finished; after the secondary friction stage is finished, a rotating clamp is braked, after the main shaft for clamping the end plate stops rotating, a movable clamp for clamping the steel pipes performs feeing upsetting, and the friction welding process can be completed through upsetting and pressure maintaining. Working procedures of chamfering and boss turning in the existing process flow can be removed; the rotating speed in the friction heating stage is fixed, and operation and control are convenient; the friction deformation can be controlled, and the welding length stability of the web member can be improved; the production efficiency is improved, and the production cost is reduced.
Description
Technical field
The present invention relates to Friction welding technique, especially tower machine standard knot web member friction welding method.
Background technology
Friction welding (FW) is a kind of metal solid-phase thermal press welding method, be, after Relative friction between two surfaces continues to proceed to produce enough heats, stop friction, forging welding is together under the active force of upsetting force for two parts, forming weld seam, is a kind of high-quality, high efficiency, nontoxic welding method.
Standard knot is the vitals of tower machine.If the frame structure that existing standard section main is made up of crossbeam and vertical beam, for ensureing the firmness of standard knot further, between crossbeam, be also welded with web member.Web member, as the important feature parts of tower machine standard knot, in the use procedure of tower machine, frequently must bear the Tension and Compression stress from adjacent component, and the solid and reliable stability for the operation of tower machine of web member and security have a direct impact.
At present, a large amount of tower machine standard knot web member adopts the patten's design arranging end plate sealing at steel pipe two ends, and for taking into account the object facilitating hand assembled, welding, the mode that any one end of web member is designed to as shown in Figures 1 and 2 connects.This connected mode leaves boss at end plate, and during assembling, boss coordinates the relative position requirement that can ensure end plate and steel pipe with steel pipe inner wall, and the liner of boss side self-assembling formation groove weld when welding, attachment weld is the composite welds of groove welding and angle welding.Because needs repeatedly carry out machining to steel pipe and two end-plates, therefore it is large to there is difficulty of processing in actual production, and production efficiency is low, the more high weak point of production cost.And due to attachment weld employing manual welding, product appearance quality is also undesirable.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of tower machine standard knot web member friction welding method, under the prerequisite meeting the assembly precision of web member own and bonding strength, by using friction welding method welding tower machine standard knot web member, simplify production process and difficulty of processing, enhance productivity and reduce production cost.
A kind of tower machine standard knot web member friction welding method, described tower machine standard knot web member is welded by steel pipe and end plate two parts, and friction welding method comprises the steps:
A. welds prepares: by shaping for steel pipe saw material, end plate cutting stock, and greasy dirt, iron rust and other impurity of removing that end plate needs friction welding one side;
B. being added by steel pipe is held on movable clamp, and end plate adds and is held on rolling clamp, and keeps steel pipe axis and end plate dead in line.
C. rub heating: friction heating process is divided into one-level friction and secondary to rub two stages, and the rotating speed of two stage rotary main shafts is identical, and friction pressure and the fraction time of wherein one-level friction are fixed; One-level friction terminates, and enters secondary friction phase, and secondary friction pressure is greater than one-level friction pressure and fixes, and when total burnoff length of one-level friction and secondary friction reaches preset value, secondary friction phase terminates;
D. compressing process: secondary friction terminates, to rolling clamp braking, accommodates after the main shaft of end plate stops the rotation, adds the movable clamp feeding upset holding steel pipe, namely complete friction welding process through upset pressurize.
Further, in welds prepares step, after steel pipe saw material is shaping, end face gradient≤1.5mm to be welded.
Further, in friction heating process, the rotating speed of the rotary main shaft of one-level friction and secondary friction is 1000 revs/min to 1430 revs/min.
Further, in friction heating process, total burnoff length of one-level friction and secondary friction is 16mm.
Further, in compressing process, upsetting force is the twice of secondary friction pressure, and the upset dwell time is 4 seconds.
Further, in friction heating process, one-level friction pressure is 81.7kN, one-level fraction time 3 seconds, and one-level friction steel pipe feeding degree is 3mm/ second to 4mm/ second; Secondary friction pressure is 90.8kN, and secondary friction steel pipe feeding degree is 3mm/ second to 4mm/ second, and total burnoff length of one-level friction and secondary friction is 16mm; In compressing process, upsetting force is 181.6kN, and the upset dwell time is 4 seconds.
Further, in friction heating process, one-level friction pressure is 90.8kN, one-level fraction time 3 seconds, and one-level friction steel pipe feeding degree is 3mm/ second to 4mm/ second; Secondary friction pressure is 109.0kN, and secondary friction steel pipe feeding degree is 3mm/ second to 4mm/ second, and total burnoff length of one-level friction and secondary friction is 16mm; In compressing process, upsetting force is 217.9kN, and the upset dwell time is 4 seconds.
Further, in friction heating process, one-level friction pressure is 181.6kN, one-level fraction time 3 seconds, and one-level friction steel pipe feeding degree is 3mm/ second to 4mm/ second; Secondary friction pressure is 204.3kN, and secondary friction steel pipe feeding degree is 3mm/ second to 4mm/ second, and total burnoff length of one-level friction and secondary friction is 16mm; In compressing process, upsetting force is 408.6kN, and the upset dwell time is 4 seconds.
The invention has the beneficial effects as follows: with friction welding method welding tower machine standard knot web member, just do not need the joint bevel of steel pipe and end plate and form liner, eliminating " bevel and the car boss " operation in existing work flow.Friction welding only needs about 1 minute from clamping to the complete workpiece that takes off of welding, and do not need upset workpiece to obtain optimum welding position, Automation of Welding degree improves, and improves production efficiency, reduces production cost.The standard knot web member steady quality of friction welding (FW) welding is reliable, meets design requirement completely.The overlap arc transition formed at friction welding outer wall is level and smooth, beautiful appearance.In friction-welding technique, the rotating speed of whole friction heating period is fixed, and is convenient to manipulation; Adopt the friction mode of heating in two stages, second stage controls according to total amount of friction in two stages, ensure that the unification of the length after web member welding.
Accompanying drawing explanation
Fig. 1 is that prior art web member is welded to connect schematic diagram;
Fig. 2 is that in Fig. 1, steel pipe and end plate are welded to connect place's enlarged diagram;
Fig. 3 is web member friction welding (FW) connection diagram of the present invention.
Parts, position and numbering in figure: steel pipe 1, end plate 2.
Detailed description of the invention
Below for Φ 76X5, Φ 89X5, Φ 108X8 steel pipe, embodiments of the present invention are described.
Tower machine standard knot web member is welded by steel pipe 1 and end plate 2, and friction welding method comprises the steps:
A. welds prepares: steel pipe 1 is sawed material shaping, the steel pipe 1 weld for needing two ends, needs to consider that the burnoff length at steel pipe 1 two ends is carried out saw again and expected shaping, and steel pipe 1 end face inclines face gradient≤1.5mm, requires that end face is without dirts such as oil, rust; End plate 2 pass-through mode cutting stock, NC flame cutting machine blanking can be adopted, and need friction welding one side to carry out sandblasting or bead to end plate 2, wipe oil, iron rust and other impurity, dirt must not more than 5% in the residual quantity of surface of steel plate, especially strict scrubbing on the friction welding seam annulus of end plate.
B. added to be held on movable clamp by steel pipe 1 and be fixedly clamped, end plate 2 adds to be held on rolling clamp and is fixedly clamped, and keeps the axis of steel pipe 1 and the dead in line of end plate 2.Movable clamp clamping steel pipe 1 makes it in friction welding process, not produce slippage, and will ensure not damage steel pipe 1 crust; Rolling clamp, for clamping end plate 2, mainly plays fixed charge method end plate 2, can follow main shaft and rotate together.
C. rub heating: friction heating process is divided into one-level friction and secondary to rub two stages, and the rotating speed of the rotary main shaft of one-level friction and secondary friction is equal, and the range of speeds is 1000 revs/min to 1430 revs/min, such as, get 1100 revs/min; The friction pressure of one-level friction is fixed, and is controlled by fraction time, and the steel pipe 1 feeding degree of one-level friction is 3mm/s to 4mm/s, and one-level fraction time is 3 seconds; After one-level friction terminates, enter secondary friction phase immediately, comparatively one-level friction pressure is large and fixing for the friction pressure of secondary friction, secondary friction process is controlled by burnoff length, when total burnoff length that one-level friction and secondary rub reaches preset value 16mm, secondary friction phase terminates.
D. compressing process: secondary friction terminates rear rapid braking, accommodate after the main shaft of end plate 2 stops the rotation, add the timely feeding upset of the movable clamp holding steel pipe 1, namely complete friction welding through upset pressurize, wherein the upset dwell time is 4 seconds.
Provide Φ 76X5, Φ 89X5, the friction heating process of Φ 10,8X8 tri-kinds of model steel pipes and the controling parameters of compressing process below, this is also the detailed description of the invention of the friction welding of described three kinds of steel pipes, the speed of mainshaft of heating period of wherein rubbing is 1100 revs/min, and other parameters are as shown in table 1.
The tube fraction welding condition of table 1 three kinds of models
Through the obtained each dimensional accuracy of tower machine standard knot web member postwelding of above-mentioned friction welding method all higher than tower machine standard knot web member permissible accuracy, therefore meet assembly precision requirement; Stretched test, web member welding point tensile strength is more than or equal to mother metal, and joint breaking occurs on mother metal steel pipe, and friction welding bonding strength meets the demands; Adopt friction welding method of the present invention to obtain tower machine standard knot web member up-to-standard, adopt the inventive method can greatly simplify existing processing mode, enhance productivity, reduce production cost.
Claims (8)
1. a tower machine standard knot web member friction welding method, described tower machine standard knot web member is welded by steel pipe (1) and end plate (2), it is characterized in that, comprises the following steps:
A. welds prepares: by shaping for steel pipe (1) saw material, end plate (2) cutting stock, and greasy dirt, iron rust and other impurity of removing that end plate (2) needs friction welding one side;
B. being added by steel pipe (1) is held on movable clamp, and end plate (2) adds and is held on rolling clamp, and keeps steel pipe (1) axis and end plate (2) dead in line;
C. rub heating: friction heating process is divided into one-level friction and secondary to rub two stages, and the rotating speed of two stage rotary main shafts is identical, and friction pressure and the fraction time of wherein one-level friction are fixed; One-level friction terminates, and enters secondary friction phase, and secondary friction pressure is greater than one-level friction pressure and fixes, and when total burnoff length of one-level friction and secondary friction reaches preset value, secondary friction phase terminates;
D. compressing process: secondary friction terminates, to rolling clamp braking, after the main shaft accommodating end plate (2) stops the rotation, adds the movable clamp feeding upset holding steel pipe (1), and upset pressurize.
2. tower machine standard knot web member friction welding method as claimed in claim 1, is characterized in that: after described steel pipe (1) saw material is shaping, end face gradient≤1.5mm to be welded.
3. tower machine standard knot web member friction welding method as claimed in claim 2, is characterized in that: in friction heating process, and the rotating speed of the rotary main shaft of one-level friction and secondary friction is 1000 revs/min to 1430 revs/min.
4. tower machine standard knot web member friction welding method as claimed in claim 3, is characterized in that: in friction heating process, and total burnoff length of one-level friction and secondary friction is 16mm.
5. tower machine standard knot web member friction welding method as claimed in claim 4, it is characterized in that: in compressing process, upsetting force is the twice of secondary friction pressure, and the upset dwell time is 4 seconds.
6. the tower machine standard knot web member friction welding method as described in claim as arbitrary in claim 1 to 5, it is characterized in that: in friction heating process, one-level friction pressure is 81.7kN, one-level fraction time 3 seconds, and one-level friction steel pipe (1) feeding degree is 3mm/ second to 4mm/ second; Secondary friction pressure is 90.8kN, and secondary friction steel pipe (1) feeding degree is 3mm/ second to 4mm/ second, and total burnoff length of one-level friction and secondary friction is 16mm; In compressing process, upsetting force is 181.6kN, and the upset dwell time is 4 seconds.
7. the tower machine standard knot web member friction welding method as described in claim as arbitrary in claim 1 to 5, it is characterized in that: in friction heating process, one-level friction pressure is 90.8kN, one-level fraction time 3 seconds, and one-level friction steel pipe (1) feeding degree is 3mm/ second to 4mm/ second; Secondary friction pressure is 109.0kN, and secondary friction steel pipe (1) feeding degree is 3mm/ second to 4mm/ second, and total burnoff length of one-level friction and secondary friction is 16mm; In compressing process, upsetting force is 217.9kN, and the upset dwell time is 4 seconds.
8. the tower machine standard knot web member friction welding method as described in claim as arbitrary in claim 1 to 5, it is characterized in that: in friction heating process, one-level friction pressure is 181.6kN, one-level fraction time 3 seconds, and one-level friction steel pipe (1) feeding degree is 3mm/ second to 4mm/ second; Secondary friction pressure is 204.3kN, and secondary friction steel pipe (1) feeding degree is 3mm/ second to 4mm/ second, and total burnoff length of one-level friction and secondary friction is 16mm; In compressing process, upsetting force is 408.6kN, and the upset dwell time is 4 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410355988.3A CN104259649B (en) | 2014-07-24 | Tower crane standard knot web member friction welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410355988.3A CN104259649B (en) | 2014-07-24 | Tower crane standard knot web member friction welding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104259649A true CN104259649A (en) | 2015-01-07 |
| CN104259649B CN104259649B (en) | 2017-01-04 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109414781A (en) * | 2016-08-10 | 2019-03-01 | 日锻汽门株式会社 | Friction welded method and friction welded device |
| CN112756770A (en) * | 2020-12-30 | 2021-05-07 | 天津北特汽车零部件有限公司 | Friction welding process for hollow rod |
| CN113305416A (en) * | 2021-06-30 | 2021-08-27 | 东风商用车有限公司 | Tube plate welding beam and manufacturing method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100419290B1 (en) * | 2003-07-23 | 2004-02-18 | 주식회사 금화정밀 | STANDARDIZATION TECHNOLOGY ON THE DESIGN OF FRICTION WELDING PROCESS FOR DISSIMILAR MATERIALS, NiBASE SUPER HEAT-RESISTING ALLOY AND HEAT-RESISTING STEEL |
| CN1820887A (en) * | 2006-03-23 | 2006-08-23 | 汉中双戟摩擦焊接制造技术有限责任公司 | Friction welding method for high voltage power transmission and transforming contact |
| CN101200019A (en) * | 2006-12-15 | 2008-06-18 | 天水风动机械有限责任公司 | Application method of friction welding technology used in drilling machinery processing |
| CN103586577A (en) * | 2013-12-02 | 2014-02-19 | 兰州连城铝业有限责任公司 | Friction welding method of aluminum guide rod and steel claw |
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100419290B1 (en) * | 2003-07-23 | 2004-02-18 | 주식회사 금화정밀 | STANDARDIZATION TECHNOLOGY ON THE DESIGN OF FRICTION WELDING PROCESS FOR DISSIMILAR MATERIALS, NiBASE SUPER HEAT-RESISTING ALLOY AND HEAT-RESISTING STEEL |
| CN1820887A (en) * | 2006-03-23 | 2006-08-23 | 汉中双戟摩擦焊接制造技术有限责任公司 | Friction welding method for high voltage power transmission and transforming contact |
| CN101200019A (en) * | 2006-12-15 | 2008-06-18 | 天水风动机械有限责任公司 | Application method of friction welding technology used in drilling machinery processing |
| CN103586577A (en) * | 2013-12-02 | 2014-02-19 | 兰州连城铝业有限责任公司 | Friction welding method of aluminum guide rod and steel claw |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109414781A (en) * | 2016-08-10 | 2019-03-01 | 日锻汽门株式会社 | Friction welded method and friction welded device |
| CN109414781B (en) * | 2016-08-10 | 2021-01-15 | 日锻汽门株式会社 | Friction welding method and friction welding device |
| CN112756770A (en) * | 2020-12-30 | 2021-05-07 | 天津北特汽车零部件有限公司 | Friction welding process for hollow rod |
| CN113305416A (en) * | 2021-06-30 | 2021-08-27 | 东风商用车有限公司 | Tube plate welding beam and manufacturing method thereof |
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