CN107127453A - A kind of method for reducing laser filling wire welding austenitic stainless steel fire check - Google Patents
A kind of method for reducing laser filling wire welding austenitic stainless steel fire check Download PDFInfo
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- CN107127453A CN107127453A CN201710408019.3A CN201710408019A CN107127453A CN 107127453 A CN107127453 A CN 107127453A CN 201710408019 A CN201710408019 A CN 201710408019A CN 107127453 A CN107127453 A CN 107127453A
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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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/32—Bonding taking account of the properties of the material involved
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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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
- B23K2103/05—Stainless steel
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- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention discloses a kind of method for reducing laser filling wire welding slab austenitic stainless steel fire check, it is adaptable to the laser laminar filler wire welding process of slab austenitic stainless steel.The present invention changes stress distribution of the welding point in continuous type Narrow sloping-glot during laser filling wire welding by designing stepped divided edge structure form, improves the crystallization direction of seam organization, so as to reduce the formation rate of solidification cracking.The present invention comprises the following steps：（1）The stepped Narrow sloping-glot with root face is designed, using laser from fusion welding root face layer；（2）The welding of the second layer is completed by laser filling wire welding；（3）Continue laser filling wire welding to complete the welding of third layer, layer below by that analogy, until cover welding complete.In identical welding material, restrain under the conditions of using the welding method of the present invention than conventional narrow gap laser filling wire welding technique when cracking frequency it is low.
Description
Technical field
It is specifically that one kind reduces laser filling wire welding austenite not the present invention relates to austenite stainless steel welding method field
The method for steel fire check of becoming rusty.
Background technology
Austenitic stainless steel has preferable weldability, and good welding quality can be obtained using suitable welding procedure.
Its main Welding Problems existed has：The intercrystalline corrosion of welding point, the fire check of welding point, stress corrosion cracking, Ovshinsky
The brittle and larger welding deformation of body weld seam.Laser welding because its heat input concentrate, welding deformation is small the advantages of in recent years by
It is widely applied in the welding of austenitic stainless steel.Laser welding is generally laser from melting welding, its depth of weld energy to material
Power depends on laser power size, and being excited luminous power in thick plates is limited.Laser filling wire welding is by designing narrow gap
Divided edge structure, the welding manner of wire feed is coordinated using laser beam, and layering accumulation welding is realized in groove, so as to realize that reduction swashs
The welding of luminous power and completion to slab.The greatest problem of laser filling wire welding austenite stainless steel thick plate is in welding process
Fire check, because the thermal conductivity factor of austenitic stainless steel in itself is small, and linear expansion coefficient is big, and welding process, which is easy to produce to draw, answers
There is very thin liquidus surface in power, the austenite intercrystalline in crystallization, plasticity is low；And during laser welding be one quickly heating,
Cooling, solidification, the process of crystallization, the weld seam formed in narrow gap multilayer laser filling wire welding process have very big for column crystal
Directionality.The attribute of material in itself is combined with laser welding characteristic can produce very big tension under the conditions of narrow gap, because
This has great fire check dangerous.
The content of the invention reduces the side of laser filling wire welding austenitic stainless steel fire check it is an object of the invention to provide a kind of
Method, to solve the hot tearing that weld seam easily occurs when prior art welds slab austenitic stainless steel using laser filling wire welding technique
The problem of line defect.
In order to achieve the above object, the technical solution adopted in the present invention is：
A kind of method for reducing laser filling wire welding austenitic stainless steel fire check, it is adaptable to the laser of slab austenitic stainless steel
It is layered filler wire welding process, it is characterised in that：Comprise the following steps：
（1）, by the welding position of the austenitic stainless steel test plate (panel) of the stepped groove with root face, after being cleaned with acetone group pair
It is good, and fixed using fixture clamping；
（2）, using laser from fusion welding technique welding position weld root face layer, root face layer welding complete after weld seam is polished
Cleaned afterwards with acetone, then complete the welding of the second layer on root face layer using laser filling wire welding technique；
（3）, after the completion of second layer welding, cleaned, continued using laser filling wire welding technique the with acetone after weld seam is polished
Two layers of upper welding for completing third layer；
（4）, layer below on the basis of previous layer according to step（3）Welded, until cover welding is completed.
A kind of method of described reduction laser filling wire welding austenitic stainless steel fire check, it is characterised in that：Ladder
One-sided Widths control need to 1mm at least wider than preceding layer in more than 0.5mm, the i.e. groove width of per pass packed layer.
A kind of method of described reduction laser filling wire welding austenitic stainless steel fire check, it is characterised in that：Regulation swashs
The parameter of light filler wire welding technique, and silk feeding quantity is controlled, make groove depth and groove width that welding procedure adapts to every layer, make
Obtain every layer of appearance of weld good, silk feeding quantity is adequately filling up this layer of groove and spread out on ladder.
A kind of method of described reduction laser filling wire welding austenitic stainless steel fire check, it is characterised in that：Per pass is welded
After the completion of seam welding, grind off the reinforcement part of last layer weld seam using angle grinder, such that this layer of welding position is smooth, and use acetone
Welding position is cleaned up, to carry out next layer of welding.
A kind of method of described reduction laser filling wire welding austenitic stainless steel fire check, it is characterised in that：Laser is filled out
Silk welding procedure uses preposition wire feed.
The present invention is by being designed to stepped structure type to groove, and stepped divided edge structure contributes to per pass weld seam
The free growth of tissue, slow down the constraint of groove Welded Joints, and welding point exists during changing laser filling wire welding
Stress distribution in continuous type Narrow sloping-glot, improves its weld seam crystallization direction, so as to reduce the formation rate of solidification cracking.
Brief description of the drawings
Fig. 1 is the bevel shape and layer distribution schematic diagram of present example.
Embodiment
As shown in figure 1, a kind of method for reducing laser filling wire welding austenitic stainless steel fire check, it is adaptable to slab Ovshinsky
The laser laminar filler wire welding process of body stainless steel, comprises the following steps：
（1）, by the welding position of the austenitic stainless steel test plate (panel) of the stepped groove with root face, after being cleaned with acetone group pair
It is good, and fixed using fixture clamping；
（2）, using laser from fusion welding technique welding position weld root face layer, root face layer welding complete after weld seam is polished
Cleaned afterwards with acetone, then complete the welding of the second layer on root face layer using laser filling wire welding technique；
（3）, after the completion of second layer welding, cleaned, continued using laser filling wire welding technique the with acetone after weld seam is polished
Two layers of upper welding for completing third layer；
（4）, layer below on the basis of previous layer according to step（3）Welded, until cover welding is completed.
The One-sided Widths control of ladder need to be at least wider than preceding layer in more than 0.5mm, the i.e. groove width of per pass packed layer
1mm。
The parameter of laser filling wire welding technique is adjusted, and controls silk feeding quantity, the groove depth for making welding procedure adapt to every layer
And groove width so that every layer of appearance of weld is good, and silk feeding quantity is adequately filling up this layer of groove and spread out on ladder.
After the completion of the welding of per pass weld seam, grind off the reinforcement part of last layer weld seam using angle grinder, cause this layer of welding position
Horizontalization is whole, and welding position is cleaned up with acetone, to carry out next layer of welding.
Laser filling wire welding technique uses preposition wire feed.
Specific embodiment：
Welding material is austenitic stainless steel 316 L N（300×150×20mm）Welding wire is BOHLER ER316LMn, gage of wire
For 1.2mm.
Root face depth is 5mm, and root face width is that the 2mm i.e. groove width of the second layer is 2mm, and the groove width of third layer is
4mm is that unilateral ladder width is 1mm, and the second layer, the groove depth of third layer are 3mm.
Welding heat source is optical fiber laser.Protective gas used is Ar, and shield gas flow rate is 15-20L/min.
Laser power used in root face is 3.6KW, and speed of welding is 1.0m/min, single track through welding 5mm depth.Landfilling area first
During layer, laser power is 4KW, and speed of welding is 1.0m/min, and wire feed rate is 5.0m/min.During the landfilling area second layer, laser
Power is 4kW, and speed of welding is 0.5m/min, and wire feed rate is 7.0m/min.
Postwelding carries out metallographic observation to weld seam end face, does not find that fire check is present.
Claims (5)
1. it is a kind of reduce laser filling wire welding austenitic stainless steel fire check method, it is adaptable to slab austenitic stainless steel swash
Light is layered filler wire welding process, it is characterised in that：Comprise the following steps：
（1）, by the welding position of the austenitic stainless steel test plate (panel) of the stepped groove with root face, after being cleaned with acetone group pair
It is good, and fixed using fixture clamping；
（2）, using laser from fusion welding technique welding position weld root face layer, root face layer welding complete after weld seam is polished
Cleaned afterwards with acetone, then complete the welding of the second layer on root face layer using laser filling wire welding technique；
（3）, after the completion of second layer welding, cleaned, continued using laser filling wire welding technique the with acetone after weld seam is polished
Two layers of upper welding for completing third layer；
（4）, layer below on the basis of previous layer according to step（3）Welded, until cover welding is completed.
2. a kind of method for reducing laser filling wire welding austenitic stainless steel fire check according to claim 1, its feature
It is：The One-sided Widths control of ladder need to 1mm at least wider than preceding layer in more than 0.5mm, the i.e. groove width of per pass packed layer.
3. a kind of method for reducing laser filling wire welding austenitic stainless steel fire check according to claim 1, its feature
It is：Adjust the parameter of laser filling wire welding technique, and control silk feeding quantity, make groove depth that welding procedure adapts to every layer and
Groove width so that every layer of appearance of weld is good, and silk feeding quantity is adequately filling up this layer of groove and spread out on ladder.
4. a kind of method for reducing laser filling wire welding austenitic stainless steel fire check according to claim 1, its feature
It is：After the completion of the welding of per pass weld seam, grind off the reinforcement part of last layer weld seam using angle grinder, cause this layer of welding position horizontalization
It is whole, and welding position is cleaned up with acetone, to carry out next layer of welding.
5. a kind of method for reducing laser filling wire welding austenitic stainless steel fire check according to claim 1, its feature
It is：Laser filling wire welding technique uses preposition wire feed.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111299834A (en) * | 2020-03-13 | 2020-06-19 | 中国科学院合肥物质科学研究院 | Laser narrow gap welding method for thick plate of 316LN and GH4169 dissimilar materials |
| CN113770522A (en) * | 2021-07-06 | 2021-12-10 | 中国船舶重工集团公司第七二五研究所 | Laser ultra-narrow gap welding method for titanium alloy thick plate pre-filled wire |
| CN114178698A (en) * | 2021-12-13 | 2022-03-15 | 湖南华菱涟源钢铁有限公司 | 9Ni steel narrow-gap laser filler wire welding method |
| CN114799526A (en) * | 2022-05-13 | 2022-07-29 | 上海交通大学 | Narrow gap laser swing-wire filling composite welding method for ultrahigh-strength steel thick plate |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101480762A (en) * | 2008-12-12 | 2009-07-15 | 江阴市东发机械设备制造有限公司 | Method for producing steel-based composite board tower |
| CN201783764U (en) * | 2010-08-04 | 2011-04-06 | 江苏申港锅炉有限公司 | Butt groove structure of stainless steel pipe |
| CN102284775A (en) * | 2010-06-17 | 2011-12-21 | 上海宝钢设备检修有限公司 | Method for welding roll gaps of large-diameter technical roller coiled by plank stuffs |
| CN103008895A (en) * | 2012-12-15 | 2013-04-03 | 华中科技大学 | Narrow gap multi-pass laser welding method for thick plate |
| CN103252578A (en) * | 2012-02-17 | 2013-08-21 | 沈阳新松机器人自动化股份有限公司 | Method for narrow-gap laser welding with filler wires for superconducting coil box |
| CN103286449A (en) * | 2013-05-07 | 2013-09-11 | 中国科学院等离子体物理研究所 | Narrow gap laser hot-wire-filling welding process for 316LN thick plate |
| CN104551403A (en) * | 2014-12-26 | 2015-04-29 | 广东省工业技术研究院(广州有色金属研究院) | Thick-plate narrow-gap laser scanning filler wire welding method |
| JP2015120188A (en) * | 2013-12-25 | 2015-07-02 | 日立Ｇｅニュークリア・エナジー株式会社 | Narrow Gap laser welding method |
| CN106312354A (en) * | 2016-10-21 | 2017-01-11 | 中国化学工程第六建设有限公司 | Welding method for TP347H austenite stainless steel thin-wall pipe |
-
2017
- 2017-06-02 CN CN201710408019.3A patent/CN107127453A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101480762A (en) * | 2008-12-12 | 2009-07-15 | 江阴市东发机械设备制造有限公司 | Method for producing steel-based composite board tower |
| CN102284775A (en) * | 2010-06-17 | 2011-12-21 | 上海宝钢设备检修有限公司 | Method for welding roll gaps of large-diameter technical roller coiled by plank stuffs |
| CN201783764U (en) * | 2010-08-04 | 2011-04-06 | 江苏申港锅炉有限公司 | Butt groove structure of stainless steel pipe |
| CN103252578A (en) * | 2012-02-17 | 2013-08-21 | 沈阳新松机器人自动化股份有限公司 | Method for narrow-gap laser welding with filler wires for superconducting coil box |
| CN103008895A (en) * | 2012-12-15 | 2013-04-03 | 华中科技大学 | Narrow gap multi-pass laser welding method for thick plate |
| CN103286449A (en) * | 2013-05-07 | 2013-09-11 | 中国科学院等离子体物理研究所 | Narrow gap laser hot-wire-filling welding process for 316LN thick plate |
| JP2015120188A (en) * | 2013-12-25 | 2015-07-02 | 日立Ｇｅニュークリア・エナジー株式会社 | Narrow Gap laser welding method |
| CN104551403A (en) * | 2014-12-26 | 2015-04-29 | 广东省工业技术研究院(广州有色金属研究院) | Thick-plate narrow-gap laser scanning filler wire welding method |
| CN106312354A (en) * | 2016-10-21 | 2017-01-11 | 中国化学工程第六建设有限公司 | Welding method for TP347H austenite stainless steel thin-wall pipe |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111299834A (en) * | 2020-03-13 | 2020-06-19 | 中国科学院合肥物质科学研究院 | Laser narrow gap welding method for thick plate of 316LN and GH4169 dissimilar materials |
| CN113770522A (en) * | 2021-07-06 | 2021-12-10 | 中国船舶重工集团公司第七二五研究所 | Laser ultra-narrow gap welding method for titanium alloy thick plate pre-filled wire |
| CN114178698A (en) * | 2021-12-13 | 2022-03-15 | 湖南华菱涟源钢铁有限公司 | 9Ni steel narrow-gap laser filler wire welding method |
| CN114178698B (en) * | 2021-12-13 | 2024-04-09 | 湖南华菱涟源钢铁有限公司 | 9Ni steel narrow-gap laser filler wire welding method |
| CN114799526A (en) * | 2022-05-13 | 2022-07-29 | 上海交通大学 | Narrow gap laser swing-wire filling composite welding method for ultrahigh-strength steel thick plate |
| CN114799526B (en) * | 2022-05-13 | 2023-09-05 | 上海交通大学 | Narrow-gap laser swing-filler wire composite welding method for ultra-high-strength steel thick plate |
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Application publication date: 20170905 |