CN102794542B - Vibrating wire-feeding surfacing method - Google Patents
Vibrating wire-feeding surfacing method Download PDFInfo
- Publication number
- CN102794542B CN102794542B CN201210316938.5A CN201210316938A CN102794542B CN 102794542 B CN102794542 B CN 102794542B CN 201210316938 A CN201210316938 A CN 201210316938A CN 102794542 B CN102794542 B CN 102794542B
- Authority
- CN
- China
- Prior art keywords
- welding
- wire
- wire feed
- surfacing
- molten pool
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Arc Welding In General (AREA)
Abstract
The invention relates to a vibrating wire-feeding method which is characterized in that right and left swinging of a welding gun is combined with reciprocating vibration of a welding wire; the automatic wire-feeding process is accompanied by the axial vibration of the welding wire; a molten welding material is deposited on the internal wall of a pipe, and the fluidity of a welding pool is greatly improved, so as to further improve the surfacing efficiency; the vibrating welding wire can uniformly stir the molten pool in the melting process of the welding wire, especially for the material with poor fluidity, such as nickel-base alloy, so that gas can escape rapidly when metal in the molten pool is stirred, and hot welding cracks and pores are reduced; as the vibrating wire-feeding stirs the molten pool, solidification and crystallization in the molten pool are uniform; the metallurgical structure of a surfacing layer is uniform and exquisite; the mechanical property of the surfacing layer is greatly superior to those of normal argon tungsten-arc welding and gas metal-arc welding; the quality of a surfacing joint is improved to a great extent; the property is good; the yield of products is greatly increased; and the property of the surfacing joint is greatly improved.
Description
Technical field
The invention belongs to welding technology field, be specifically related to the method for composite bimetal pipe pipe end vibration welding.
Background technology
Because the oil of conveying, natural gas include more Korrosionsmedium in current oil-gas field development project, ordinary carbon steel pipe cannot meet Corrosion Protection requirement, and ordinary carbon steel+corrosion inhibiter just slow down the speed of corrosive pipeline, does not tackle the problem at its root.Owing to being simple mechanical bond between mechanical composite tube carbon steel base tube and stainless steel bushing pipe, there is certain gap, due to the existence in gap in pipe pipe docking operation, easy venthole during butt welding welding, the defect such as molten, welding quality and efficiency are subject to serious impact; If mechanical composite tube pipe end is carried out built-up welding process, can address this problem.
Built-up welding is a kind of method of compound in pipeline; it can be realized by a lot of welding method; such as: it can connect technique by gas metal-arc welding and realize; corrosion resistant alloy welding wire is delivered in the molten bath of inert gas shielding through electric arc by gas metal-arc welding; higher deposition ratio is reached by increasing wire feed rate; certainly; large wire feed rate also creates large heat input simultaneously; cause the degree of depth of welding pool to parent metal Directional Extension; the increase of fusion penetration can cause iron ion to dilute corrosion-resistant alloy layer, and the metallurgy characteristic of overlay cladding is given a discount.The gas metal-arc welding possessing pulse current transformation function inputs useful to the dilution of minimizing iron ion and heat, but as everyone knows, it also brings the possibility occurring incomplete fusion defect between corrosion-resistant alloy layer and parent metal.Meanwhile, the splashing of gas metal-arc welding, pore index also make suitability for industrialized production be difficult to accept.
Also argon tungsten arc process can be adopted to realize pipe end built-up welding, and argon tungsten-arc welding, owing to being non-melt pole, adopting inert gas shielding, avoids the pollution of air to molten bath.Argon tungsten-arc welding can solve the difficult problem do not merged, and in argon tungsten-arc welding weld deposit process, tungsten electrode maintains welding pool, but corrosion resistant alloy welding wire is delivered between molten bath and tungsten electrode respectively, and its deposition efficiency significantly declines.
In sum, common consumable electrode gas-arc built-up welding exists splashes greatly, and deposition rate is large, the problem that welding quality is low; Common argon tungsten-arc welding built-up welding, there is welding deposition rate low, easily occur the defects such as interlayer does not melt, bar shaped pore during conventional multilayer built-up welding, these all have a strong impact on quality and the efficiency of suitability for industrialized production.
Summary of the invention
In order to solve deficiency existing in weld deposit process in prior art, the invention provides a kind of vibration wire feed bead welding method that built-up welding efficiency is high, heat input is little, defect is low.
The technical scheme that the present invention solves the problems of the technologies described above comprises the following steps:
(1) the pre-heat treatment
The welding ends of butt-welding fitting carries out the pre-heat treatment, temperature >=50 DEG C of preheating;
(2) welding
The electric current of adjustment welding is 240 ~ 270A, voltage is 14 ~ 16V; under the argon shield gas that purity is greater than 99.99%; welding gun swings; welding wire is of reciprocating vibration along wire feed direction to be deposited on weldment; thermal weld stress is 0.45 ~ 0.6KJ/mm; welding wire amplitude is 3 ~ 5mm; welding wire vibrates under the drive of vibrating mechanism; frequency is 900 ~ 1300 beats/min; wire feed rate is 4400 ~ 5250mm/min, and the variable of wire feed rate is 70 ~ 95, and speed of welding is 315 ~ 350mm/min; form overlay cladding, complete built-up welding.
In above-mentioned steps (2), the electric current of adjustment welding is 250A, voltage is 15V, under the argon shield gas that purity is greater than 99.99%; welding gun swings, and welding wire is of reciprocating vibration along wire feed direction to be deposited on weldment, and thermal weld stress is good with 0.5KJ/mm; welding wire amplitude is 4mm; welding wire vibrates under the drive of vibrating mechanism, and frequency is 1100 beats/min, and wire feed rate is 4800mm/min; the variable of wire feed rate is 80; speed of welding is 330mm/min, forms overlay cladding, completes built-up welding.
Above-mentioned overlay cladding thickness preferably scope is 3 ~ 4mm.
Vibration wire feed bead welding method of the present invention is that welding gun swings and the combination of reciprocating vibration of welding wire, with the axial vibration of welding wire in automatic feeding process, wlding is deposited on the inwall of pipe, substantially increase the mobility of welding pool, and then improve built-up welding efficiency, particularly to the material of poor fluidity, as nickel-base alloy, when wire melting, the welding wire of vibration has the function in uniform stirring molten bath, molten pool metal gas in stirring is overflowed fast, decreases the generation of HOT CRACK FOR WELDING P and pore; Under the effect of vibration wire feed agitation molten pool; molten bath even solidification crystallization; overlay cladding metallographic structure is even, careful; overlay cladding mechanical property is better than common argon tungsten-arc welding and gas metal-arc welding greatly; greatly enhance the quality of bead-on-plate weld, functional, substantially increase the performance of product percent of pass and weld seam; for multiple tube manufacture reduces cost, also for pipe end slope-mouth process reduces workload.
Accompanying drawing explanation
Fig. 1 is the electrode vibration direction schematic diagram in embodiment 1.
Detailed description of the invention
Now in conjunction with the accompanying drawings and embodiments the present invention is further described, but the present invention is not limited only to following embodiment.
Embodiment 1
Now for composite bimetal pipe pipe end, vibration wire feed bead welding method is realized by following steps:
(1) the pre-heat treatment
Carry out the pre-heat treatment to the welding ends of composite bimetal pipe 1, the temperature of preheating is 75 DEG C;
(2) welding
Open common welding machine, protection gas and usual wire feeder, the electric current of adjustment welding is 250A, voltage is 15V, be under the protective gas of the argon gas of 99.999% in purity, welding gun swings under the cross slid platform of welding machine drives, welding bead is evenly spread out, automatically the upper-lower position of welding gun is adjusted according to the length of welding arc, under the driving of the oscillation drive of wire feeder, welding wire is of reciprocating vibration along wire feed direction, see Fig. 1, thermal weld stress is 0.5KJ/mm, welding wire amplitude is 4mm, vibration wire feed frequency is 1100 beats/min, wire feed rate is 4800mm/min, the variable of wire feed rate is 80, speed of welding is 330mm/min, welding wire is deposited on pipe end, form the overlay cladding of 3.5mm, complete built-up welding.
Oscillation drive used in above-mentioned wire feeder is common vibratory drive equipment.
Embodiment 2
Now for composite bimetal pipe pipe end, vibration wire feed bead welding method is realized by following steps:
(1) the pre-heat treatment
Carry out the pre-heat treatment to the welding ends of composite bimetal pipe 1, the temperature of preheating is 50 DEG C;
(2) welding
Open common welding machine, protection gas and usual wire feeder, the electric current of adjustment welding is 240A, voltage is 14V, be greater than the protective gas of 99.991% argon gas in purity under, welding gun swings under the cross slid platform of welding machine drives, welding bead is evenly spread out, automatically the upper-lower position of welding gun is adjusted according to the length of welding arc, under the driving of the oscillation drive of wire feeder, welding wire is of reciprocating vibration along wire feed direction, thermal weld stress is 0.45KJ/mm, welding wire amplitude is 3mm, wire feed vibration frequency is 900 beats/min, wire feed rate is 4400mm/min, the variable of wire feed rate is 70, speed of welding is 315mm/min, welding wire is deposited on pipe end, other operation is identical with embodiment 1, form the overlay cladding of 3mm, complete built-up welding.
Embodiment 3
Now for composite bimetal pipe pipe end, vibration wire feed bead welding method is realized by following steps:
(1) the pre-heat treatment
Carry out the pre-heat treatment to the welding ends of composite bimetal pipe 1, the temperature of preheating is 95 DEG C;
(2) welding
Open common welding machine, protection gas and usual wire feeder, the electric current of adjustment welding is 270A, voltage is 16V, be greater than the protective gas of 99.995% argon gas in purity under, welding gun swings under the cross slid platform of welding machine drives, welding bead is evenly spread out, automatically the upper-lower position of welding gun is adjusted according to the length of welding arc, under the driving of the oscillation drive of wire feeder, welding wire is of reciprocating vibration along wire feed direction, thermal weld stress is 0.6KJ/mm, welding wire amplitude is 5mm, wire feed vibration frequency is 1300 beats/min, wire feed rate is 5250mm/min, the variable of wire feed rate is 95, speed of welding is 350mm/min, welding wire is deposited on pipe end, other operation is identical with embodiment 1, form the overlay cladding of 4mm, complete built-up welding.
In order to verify beneficial effect of the present invention, multiple tube 1 pipe end embodiment 1 being completed built-up welding detects, specific as follows:
1, detect by an unaided eye outward appearance, and the II level that inspection radiographic inspection meets JB/T 4730.2 standard " bearing device Non-Destructive Testing " is qualified.
2, weld seam lateral bending performs according to DNV OS F101 standard " submerged pipeline system ", and Bend diameter is 50.8mm, and angle of bend is 180 °, without visible crack, qualified.
3, according to DNV OS F101 standard " submerged pipeline system ", the method adopting the pendulum one-shot that freely swings to interrupt notched specimen carries out 0 DEG C of impact test to multiple tube built-up welding place, " V " gap slot of impact specimen is opened at melt run place respectively, melt run is located toward multiple tube direction+2mm, melt run is located toward multiple tube direction+5mm, result of the test is far superior to standard gauge definite value, and concrete data are as shown in table 1 below:
Table 1 built-up welding place multiple tube base tube impact absorbing function
As can be seen from upper table 1, the impact absorbing function of each position is all far longer than standard value, and namely the impact absorbing function of provable built-up welding place multiple tube of the present invention can meet DNV OS F101 standard " submerged pipeline system " requirement.
4, according to DNV OS F101 standard " submerged pipeline system " standard, hoop and the detection of axial 10kg Vickers hardness are carried out to the weld seam of built-up welding pipe end, each sample detects skin, center, internal layer three lines respectively, and every bar line is made a call to respectively 4 points, hardness number is as shown in table 2.
Table 210kg Vickers hardness number
As can be seen from Table 2, the weld seam of built-up welding pipe end of the present invention carries out hoop and axial 10kg Vickers hardness testing result is all less than standard value, can illustrate, the weld seam of built-up welding pipe end of the present invention carries out the requirement that hoop and axial 10kg Vickers hardness can meet DNV OS F101 standard " submerged pipeline system ".
Claims (1)
1. a composite bimetal pipe pipe end vibration wire feed bead welding method, comprises the following steps:
(1) the pre-heat treatment
Carry out the pre-heat treatment to the welding ends of composite bimetal pipe, the temperature of preheating is 75 DEG C;
(2) welding
The electric current of adjustment welding is 250A, voltage is 15V, and under the argon shield gas that purity is greater than 99.99%, welding gun swings; welding wire is of reciprocating vibration along wire feed direction to be deposited on the welding ends of composite bimetal pipe; thermal weld stress is 0.5KJ/mm, and welding wire amplitude is 4mm, and welding wire vibrates under the drive of vibrating mechanism; frequency is 1100 beats/min; wire feed rate is 4800mm/min, and the variable of wire feed rate is 80, and speed of welding is 330mm/min; form the overlay cladding of 3.5mm, complete built-up welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210316938.5A CN102794542B (en) | 2012-08-31 | 2012-08-31 | Vibrating wire-feeding surfacing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210316938.5A CN102794542B (en) | 2012-08-31 | 2012-08-31 | Vibrating wire-feeding surfacing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102794542A CN102794542A (en) | 2012-11-28 |
| CN102794542B true CN102794542B (en) | 2015-04-15 |
Family
ID=47193980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210316938.5A Active CN102794542B (en) | 2012-08-31 | 2012-08-31 | Vibrating wire-feeding surfacing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102794542B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103381520A (en) * | 2013-07-18 | 2013-11-06 | 中国核工业华兴建设有限公司 | Dynamic semi-automatic welding method for LNC (Liquefied Natural Gas) inner tank wall plate |
| CN104741736B (en) * | 2015-03-17 | 2016-11-09 | 昆明理工大学 | A kind of open arc overlaying method |
| CN106346110B (en) * | 2016-11-29 | 2018-09-25 | 西南石油大学 | A kind of the novel welding device and its welding method of Ni-based multiple tube |
| CN106363274A (en) * | 2016-12-12 | 2017-02-01 | 四川石油天然气建设工程有限责任公司 | All-position root-welding method for carbon steel and low alloy steel pipeline |
| CN109202270B (en) * | 2017-11-24 | 2021-06-08 | 中国航空制造技术研究院 | Double-helix stirring method and stirring device in additive manufacturing |
| CN108581138A (en) * | 2018-04-13 | 2018-09-28 | 海洋石油工程股份有限公司 | The vertical upward automatic argon arc weld of composite bimetal pipe connects technique |
| CN110961789A (en) * | 2019-11-26 | 2020-04-07 | 哈尔滨工业大学（威海） | Laser scanning-vibration hot wire TIG (tungsten inert gas) hybrid welding method |
| CN114855164A (en) * | 2022-04-22 | 2022-08-05 | 营口裕隆光电科技有限公司 | Device for fusing copper alloy on wall of hydraulic cylinder for coal mine |
| CN114734157A (en) * | 2022-04-22 | 2022-07-12 | 营口裕隆光电科技有限公司 | Device for melting copper alloy on fully mechanized mining component in underground coal mine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6127644A (en) * | 1999-04-27 | 2000-10-03 | Stoody Company | Electroslag surfacing using wire electrodes |
| CN102371421A (en) * | 2011-10-08 | 2012-03-14 | 哈尔工业大学 | Cold metal transition welding method and device thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5068716B2 (en) * | 2008-09-03 | 2012-11-07 | 新日本製鐵株式会社 | Method for surface modification of steel slab |
-
2012
- 2012-08-31 CN CN201210316938.5A patent/CN102794542B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6127644A (en) * | 1999-04-27 | 2000-10-03 | Stoody Company | Electroslag surfacing using wire electrodes |
| CN102371421A (en) * | 2011-10-08 | 2012-03-14 | 哈尔工业大学 | Cold metal transition welding method and device thereof |
Non-Patent Citations (1)
| Title |
|---|
| 水蒸气保护频幅可调振动堆焊;朱亮等;《焊接》;20010228(第2期);第25－27页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102794542A (en) | 2012-11-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102794542B (en) | Vibrating wire-feeding surfacing method | |
| US9808876B2 (en) | Stainless steel weldment and pad combined welding method | |
| CN102528237B (en) | Welding process for carbon steel process pipeline | |
| CN103668175B (en) | Be beneficial to the laser cladding repair technique of the thin-wall sleeve reducing built-up welding static stress and distortion | |
| CN102941414A (en) | Pre-filled wire stirring friction welding method | |
| CN110560844A (en) | Welding method of nickel-based material pipeline | |
| CN106903399B (en) | The high strength pipe semiautomatic welding method of X80 or more grade of steel | |
| CN104551379A (en) | FSW (Friction-stir Welding) method assisted by heat source | |
| CN101648311A (en) | Method for welding submarine pipelines | |
| JP2006272377A (en) | Submerged arc welding method of steel material | |
| Layus et al. | Multi-wire SAW of 640 MPa Arctic shipbuilding steel plates | |
| JP5586182B2 (en) | Butt gas shielded arc welded joint and method | |
| CN107252977A (en) | A kind of single fillet welded methods of laser+MIG/MAG | |
| CN110576273A (en) | Metal material, process and product for welding LNG (liquefied natural gas) ultralow-temperature stainless steel | |
| JP6418365B1 (en) | Ni-base alloy wire for submerged arc welding, and method for manufacturing welded joint | |
| CN113798677A (en) | Welding method of duplex stainless steel and titanium alloy | |
| CN104520049B (en) | Submerged-arc welding method, the welding point formed by this welding method and there is the steel pipe of this welding point | |
| CN114734142B (en) | Thick-wall narrow-gap welding method for refining TC4 titanium alloy weld structure grains | |
| CN105195866B (en) | A kind of full-automatic root bead method of the pipe end of composite bimetal pipe | |
| CN108890092A (en) | The method of consumable electrode MAG weldering welding tube sheet single face welding and double face shaping | |
| CN105382384B (en) | A kind of reinforcing bar melts ledge bar welding method | |
| CN105312765B (en) | A kind of nuclear power station monopole magnetic control strip electrode electroslag surfacing method and device | |
| CN106425166A (en) | Nb-containing stainless steel soldering strip and soldering flux for monolayer strip electro-slag surfacing | |
| KR20120029650A (en) | Welding method of steel piping component | |
| Das et al. | Experience with advanced welding techniques (RMD & P-GMAW) with seamless metal cored wire for Oil & Gas pipeline industries |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |