CN102935543B - Butt welding method for T23 steel tubes - Google Patents
Butt welding method for T23 steel tubes Download PDFInfo
- Publication number
- CN102935543B CN102935543B CN201210426656.0A CN201210426656A CN102935543B CN 102935543 B CN102935543 B CN 102935543B CN 201210426656 A CN201210426656 A CN 201210426656A CN 102935543 B CN102935543 B CN 102935543B
- Authority
- CN
- China
- Prior art keywords
- welding
- butt
- current
- steel pipe
- surface layer
- 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
- 238000003466 welding Methods 0.000 title claims abstract description 110
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 31
- 239000010959 steel Substances 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 23
- NGONBPOYDYSZDR-UHFFFAOYSA-N [Ar].[W] Chemical compound [Ar].[W] NGONBPOYDYSZDR-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000010410 layer Substances 0.000 claims description 18
- 239000002344 surface layer Substances 0.000 claims description 15
- 238000010891 electric arc Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910000679 solder Inorganic materials 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Landscapes
- Arc Welding In General (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention discloses a butt welding method for T23 steel tubes. The method is characterized by including the following steps: step one, preparing grooves at steel tube ends; step two, fitting up steel tubes to be butt-welded which are contacted at ends and horizontally placed with two steel tube axes coinciding; and step three, butt-welding the steel tubes through argon tungsten pulsed arc welding. The method has the advantages that the argon tungsten pulsed arc welding is adopted for the butt welding of the T23 steel tubes, therefore the welding speed is improved effectively, and weld heat input can be controlled reasonably; and on the other hand, an operator uses an impulsive force generated in a semi-circle of an welding arc pulse welding peak current under the parameter conditions to control a welding pool easily, and the welding quality is improved greatly.
Description
Technical field
The present invention relates to a kind of steel-pipe welding method, especially a kind of T23 steel pipe duct butt-welding method.
Background technology
T23 steel is on the basis of T22 steel, reduce carbon content, reduce impurity content, add micro alloying element, add solution strengthening element tungsten or molybdenum, by the processing of becoming a useful person of Strengthening and Toughening, the steel that the normal temperature function admirable, welding performance and the processing characteristics that obtain are good, 600 DEG C of creep rupture strengths are 1.8 times of T22, and being suitable for is the ultra-supercritical boiler water-cooling wall steel of less than 575 DEG C as tube wall temperature.
T23 steel belongs to toughening type ferritic steel, and welding seam toughness is responsive to the cooling velocity after welding method and welding.The problem that welding point toughness decline impact uses is there will be in existing manual duct butt-welding method welding process.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of T23 steel pipe duct butt-welding method, by adopting the welding method butt welding T23 steel pipe of full-automatic pulsed tungsten argon arc weld(ing), preventing the generation of weld defect and improving welding efficiency, guaranteeing the mechanical property of welding position.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of T23 steel pipe duct butt-welding method, comprises the following steps:
The first step, pipe end beat groove;
Second step, treat butt-welded tube group pair, organize two right steel tube end parts and contact, horizontal positioned and two steel pipe deads in line;
3rd step, employing pulsed tungsten argon arc weld(ing) butt-welded tube.
Described 3rd step comprises the welding of root layer and surface layer welding, and the filling dutycycle that the welding of root layer and surface layer welding are formed is respectively 50%.
The welding current of described layer welding step is 80/120A, and wherein 80A is background current, and 120A is peak point current, and the voltage adopted is 11V, and the pulse frequency of pulsed tungsten argon arc weld(ing) is 2Hz, and speed of welding is 2.9-4.5 cm per minute.
Described layer welding point four steps are carried out, and welding end surface are divided into bottom left, bottom right, upper left and upper right four regions, then weld successively according to bottom left, bottom right, upper left, upper right order.
Described layer welding also comprises the step of slagging-off.
The welding current of described surface layer welding step is 80/120A, and wherein 80A is background current, and 120A is peak point current, and the voltage adopted is 11V, and the pulse frequency of pulsed tungsten argon arc weld(ing) is 2Hz, and speed of welding is 2.9-4.5 cm per minute.
Described surface layer welding point four steps are carried out, and welding end surface are divided into bottom left, bottom right, upper left and upper right four regions, then weld successively according to bottom left, bottom right, upper left, upper right order.
Described surface layer welding step and root layer welding step select ER90S-G welding wire.
Beneficial effect of the present invention is as follows: by adopting the welding method butt welding T23 steel pipe of pulsed tungsten argon arc weld(ing), increasing welding peak point current (120A) is utilized to coordinate suitable pulse frequency (2Hz) and rational dutycycle (50%), make operator in 2 peak point current half cycles, carry out the fusing of welding wire and mother metal respectively, then utilize and reduce background current (80A) in base value 2 half cycles to welding direction moving electric arc, effectively raise speed of welding like this, reasonably control thermal weld stress; Operator utilizes the impulse force that in impulse welding peak point current half cycle, welding arc produces under parameter of the present invention on the one hand in addition, controls welding pool easily, substantially increases welding quality.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is further detailed explanation.
In sum, the present invention discloses a kind of T23 steel pipe duct butt-welding method, comprises the following steps:
The first step, pipe end beat groove;
Second step, treat butt-welded tube group pair, organize two right steel tube end parts and contact, horizontal positioned and two steel pipe deads in line;
3rd step, employing pulsed tungsten argon arc weld(ing) butt-welded tube.
Described 3rd step comprises the welding of root layer and surface layer welding, and the filling dutycycle that the welding of root layer and surface layer welding are formed is respectively 50%.
The welding current of described layer welding step is 80/120A, and wherein 80A is background current, and 120A is peak point current, and the voltage adopted is 11V, and the pulse frequency of pulsed tungsten argon arc weld(ing) is 2Hz, and speed of welding is 2.9-4.5 cm per minute.
Described layer welding point four steps are carried out, and welding end surface are divided into bottom left, bottom right, upper left and upper right four regions, then weld successively according to bottom left, bottom right, upper left, upper right order.
Described layer welding also comprises the step of slagging-off.
The welding current of described surface layer welding step is 80/120A, and wherein 80A is background current, and 120A is peak point current, and the voltage adopted is 11V, and the pulse frequency of pulsed tungsten argon arc weld(ing) is 2Hz, and speed of welding is 2.9-4.5 cm per minute.
Described surface layer welding point four steps are carried out, and welding end surface are divided into bottom left, bottom right, upper left and upper right four regions, then weld successively according to bottom left, bottom right, upper left, upper right order.
Described surface layer welding step and root layer welding step select ER90S-G welding wire.
The present invention is by adopting the welding method butt welding T23 steel pipe of automatic pulsed tungsten argon arc welding, increasing welding peak point current (120A) is utilized to coordinate suitable pulse frequency (2Hz) and rational dutycycle (50%), because pulsed tungsten argon arc weld(ing) provides the pulse current changed according to certain rules to carry out the method for welding by the source of welding current to electric arc.Welding process is by the smooth combustion of fundamental current pilot arc, with controlled Current Heating fusing workpiece, each pulse shaping point-like molten bath, inter-train pause molten bath is frozen into solder joint, during the next pulse function of current, the solder joint of partial coagulation is partially filled metal again and base metals is melted, form new molten bath, by welding the adjustment of speed and inter-train pause, obtaining the solder joint of overlap joint mutually, finally obtaining continuous weld.Pulsed tungsten argon arc weld(ing) joins by regulating impulse frequency, pulse width ratio, pulse current value etc. volume, fusion penetration, the heat affected area size that the size controlling heat input carries out controlling molten bath, finally reach perfect appearance of weld, in the invention process process, operator carries out the fusing of welding wire and mother metal respectively in 2 peak point current half cycles, then utilize and reduce background current (80A) in base value 2 half cycles to welding direction moving electric arc, effectively raise speed of welding like this, reasonably control thermal weld stress; Operator utilizes the impulse force that in impulse welding peak point current half cycle, welding arc produces under parameter of the present invention on the one hand in addition, control welding pool easily, (the present invention selects specification to be the T23 steel pipe of Φ 42 × 6 × 200mm to substantially increase welding quality, adopt WSME-350 type plasma cutting inverter to weld, test specimen weld strength is see subordinate list 1).
Subordinate list 1
Claims (3)
1. a T23 steel pipe duct butt-welding method, comprises the following steps:
The first step, pipe end beat groove;
Second step, treat butt-welded tube group pair, organize two right steel tube end parts and contact, horizontal positioned and two steel pipe deads in line;
3rd step, employing pulsed tungsten argon arc weld(ing) butt-welded tube;
It is characterized in that: the 3rd step comprises the welding of root layer and surface layer welding, the filling dutycycle that the welding of root layer and surface layer welding are formed is respectively 50%; The welding current of described layer welding step is 80/120A, and wherein 80A is background current, and 120A is peak point current, and the voltage adopted is 11V, and the pulse frequency of pulsed tungsten argon arc weld(ing) is 2Hz, and speed of welding is 2.9-4.5 cm per minute; Described layer welding point four steps are carried out, and welding end surface are divided into bottom left, bottom right, upper left and upper right four regions, then weld successively according to bottom left, bottom right, upper left, upper right order; Described layer welding also comprises the step of slagging-off; The welding current of described surface layer welding step is 80/120A, and wherein 80A is background current, and 120A is peak point current, and the voltage adopted is 11V, and the pulse frequency of pulsed tungsten argon arc weld(ing) is 2Hz, and speed of welding is 2.9-4.5 cm per minute.
2. T23 steel pipe duct butt-welding method according to claim 1, it is characterized in that: described surface layer welding point four steps are carried out, welding end surface is divided into bottom left, bottom right, upper left and upper right four regions, then welds successively according to bottom left, bottom right, upper left, upper right order.
3. T23 steel pipe duct butt-welding method according to claim 2, is characterized in that: described surface layer welding step and root layer welding step select ER90S-G welding wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210426656.0A CN102935543B (en) | 2012-10-31 | 2012-10-31 | Butt welding method for T23 steel tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210426656.0A CN102935543B (en) | 2012-10-31 | 2012-10-31 | Butt welding method for T23 steel tubes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102935543A CN102935543A (en) | 2013-02-20 |
| CN102935543B true CN102935543B (en) | 2015-06-24 |
Family
ID=47694482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210426656.0A Active CN102935543B (en) | 2012-10-31 | 2012-10-31 | Butt welding method for T23 steel tubes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102935543B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105149742A (en) * | 2015-07-09 | 2015-12-16 | 安徽金阳金属结构工程有限公司 | T23 steel pipe welding process |
| JP6407357B2 (en) | 2016-06-03 | 2018-10-17 | 日新製鋼株式会社 | Method for manufacturing TIG welded stainless steel pipe, TIG welded stainless steel pipe, and TIG welded stainless steel member |
| CN106903396B (en) * | 2017-03-03 | 2020-05-05 | 中国航发贵州黎阳航空动力有限公司 | Welding process for wear-resistant alloy |
| CN107584190B (en) * | 2017-09-27 | 2020-12-15 | 中国核工业二三建设有限公司 | Automatic welding method for narrow gap of pipeline |
| CN109877424A (en) * | 2019-03-22 | 2019-06-14 | 哈尔滨锅炉厂有限责任公司 | G115 small-bore pipe heating wire TIG welding method |
| CN110695495A (en) * | 2019-10-18 | 2020-01-17 | 中国电建集团山东电力建设有限公司 | Welding process of water wall pipe for tower boiler field installation |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05228629A (en) * | 1991-07-17 | 1993-09-07 | Kubota Corp | Welding method for heat resistant centrifugal cast-steel pipes |
| US6781083B1 (en) * | 2001-08-08 | 2004-08-24 | Howard Derrick Keller | Weld overlay system |
| CN100486749C (en) * | 2007-02-06 | 2009-05-13 | 河北省职工焊割技术协会 | Method of welding dissimilar steel 10Cr9Mo1VNb and 1Cr18Ni9 |
| CN101195187B (en) * | 2007-12-20 | 2010-06-09 | 山东大学 | Iron and aluminum intermetallic compound and steel impulse fusion welding method |
| US8610031B2 (en) * | 2009-11-11 | 2013-12-17 | Lincoln Global, Inc. | Method of arc welding root pass |
| CN101972884B (en) * | 2010-09-09 | 2012-04-18 | 中广核工程有限公司 | Automatic welding method of nuclear island main pipes |
| CN102699545B (en) * | 2012-05-31 | 2015-11-25 | 中国核工业二三建设有限公司 | Weld the method for the tangent plane banjo fixing butt jointing of thin welding base metal |
-
2012
- 2012-10-31 CN CN201210426656.0A patent/CN102935543B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN102935543A (en) | 2013-02-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102935543B (en) | Butt welding method for T23 steel tubes | |
| US9677692B2 (en) | Welded steel pipe joined with high-energy-density beam and method for producing the same | |
| CN103203529B (en) | Non-melt pole electrical arc and the cross-linked welding method of twin-wire melting pole electric arc | |
| CN102962543B (en) | Welding process for red copper and stainless steel dissimilar materials | |
| CN103071935B (en) | Laser-arc composite welding device based on heat input control and welding method | |
| CN102000901B (en) | Welding technology of submerged-arc welding of X-shaped groove of medium plate | |
| CN105364269B (en) | A kind of melt welding method of copper coin and its alloy | |
| CN109014511A (en) | A kind of heated filament pulsed argon arc H-P-TIG automatic welding method | |
| CN102935544B (en) | Butt welding method for T23 steel tube and G102 steel tube | |
| CN109865955B (en) | Welding method combining manual tungsten electrode argon arc welding and shielded metal arc welding for G115 large-diameter pipe | |
| CN103495794B (en) | The duct butt-welding method of T23 steel pipe and T91 steel pipe | |
| CN103223547B (en) | Dual-hot wire system and welding method for aluminum/steel dissimilar metal TIG (Tungsten Inert Gas) arc fused braze welding | |
| CN104014928A (en) | Dissimilar steel welding method for martensite heat-resisting steel and austenitic heat-resisting steel | |
| CN105689854A (en) | Metal plate welding method | |
| CN102581450A (en) | Multi-wire submerged-arc multi-layer multi-pass welding process | |
| CN105195866B (en) | A kind of full-automatic root bead method of the pipe end of composite bimetal pipe | |
| CN201020594Y (en) | Non-heated wire submerged arc welder | |
| CN105312765B (en) | A kind of nuclear power station monopole magnetic control strip electrode electroslag surfacing method and device | |
| CN104625345A (en) | C-HRA-3 high-temperature nickel-based alloy welding technology | |
| CN105983766A (en) | Low-carbon steel and alloy steel welding method | |
| CN107160051A (en) | A kind of variable cross-section solid welding wire welded for consumable electrode | |
| CN111531263B (en) | Electron beam welding method of GH4780 alloy | |
| CN114309876A (en) | Welding method for copper and copper alloy pipes by electric arc pulse composite walking pulse | |
| CN102941399B (en) | Gas-shielded welding method for pearlite heat-resistant steel structural members | |
| CN105499763A (en) | Welding method of hollow conductive thick-wall phosphorus deoxidized copper shaft |
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 |