CN106425043A - Titanium alloy welding method - Google Patents
Titanium alloy welding method Download PDFInfo
- Publication number
- CN106425043A CN106425043A CN201610918411.8A CN201610918411A CN106425043A CN 106425043 A CN106425043 A CN 106425043A CN 201610918411 A CN201610918411 A CN 201610918411A CN 106425043 A CN106425043 A CN 106425043A
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- China
- Prior art keywords
- welding
- parts
- titanium alloy
- brushing
- compound
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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
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/167—Arc welding or cutting making use of shielding gas and of a non-consumable electrode
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/23—Arc welding or cutting taking account of the properties of the materials to be welded
-
- 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
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/14—Titanium or alloys thereof
Abstract
The invention discloses a titanium alloy welding method which comprises the following steps: step 1, cleaning a titanium alloy welding point; step 2, preparing welding flux, wherein a raw material mixture of the welding flux comprises the following components in parts by weight: 4-5 parts of MgF2, 4-6 parts of NaF, 40-45 parts of Cr2O3, 11-14 parts of TiO2, 7-9 parts of CrCl3 and 10-13 parts of Ta2O5; and step 3, brushing the welding flux on the welding point twice, wherein the thickness of a welding flux paint film I formed during the primary brushing process is 0.04-0.06 mm, the thickness of a welding flux paint film II formed during the secondary brushing process is 0.3-0.5 mm, the welding speed within the first 5 minutes of the welding process is 80-90 mm/min, and the welding speed after the first 5 minutes of the welding process is 100-120 mm/min. By adoption of the titanium alloy welding method disclosed by the invention, the welding penetration is increased and the weld porosity is reduced.
Description
Technical field
The present invention relates to a kind of titanium alloy welding method.
Background technology
Titanium alloy is a kind of excellent structural material, has the features such as density is little, intensity is high, high temperature performance is good, extensively
General be applied to Aero-Space, chemical industry, instrument manufacture etc. field.Titanium is very stable in normal temperature air, is to start and sky when it is heated
Oxygen in gas reacts, and forms fine and close oxide-film, and when temperature is more than 500 degree, oxide-film becomes cellular, thickening and hold
Easily strip off, oxygen makes titanium alloy plasticity step-down by the aperture in film constantly to internal diffusion.Accordingly, it is desirable to provide one kind can change
Kind welding fabrication and the titanium alloy welding method controlling gas hole defect.
Content of the invention
For above-mentioned technical problem, the invention provides one kind can improve welding fabrication, porosity when reducing welding, increase
The titanium alloy welding method of welding penetration.
The present invention provide technical scheme be：
A kind of titanium alloy welding method, including：
Step one, it is cleaned at titanium alloy welding；
Step 2, preparation welding compound, the raw mixture of welding compound is to be made up of the following components of meter by weight：
MgF24～5 parts, 4～6 parts of NaF, Cr2O340～45 parts, TiO211～14 parts, CrCl37～9 parts, Ta2O510～13 parts, by institute
State raw mixture and be ground to particle diameter for 50～90 μm, then add acetone in described raw mixture；
Step 3, at twice by described welding compound brushing at titanium alloy welding, brush for the first time formed welding compound
Coating thickness is 0.04～0.06mm, is spaced 3～6min between brushing for the first time and second brushing, and second brushing is formed
Welding compound coating thickness be 0.3～0.5mm；
Step 3, using argon tungsten-arc welding, weld is welded, welding current is 90～95A, weldingvoltage is 8V,
From starting to welding to proceed to 5min, speed of welding is 80～90mm/min, and after welding proceeds to 5min, speed of welding is
100～120mm/min.
Preferably, in described titanium alloy welding method, in described step 2, described raw mixture is by by weight
The following components composition of number meter：MgF25 parts, 6 parts of NaF, Cr2O345 parts, TiO214 parts, CrCl39 parts, Ta2O513 parts.
Preferably, in described titanium alloy welding method, in described step 3, brush formed welding compound for the first time
Coating thickness is 0.04mm, and the formed welding compound coating thickness of second brushing is 0.3mm.
Preferably, in described titanium alloy welding method, in described step 3, from starting to welding to proceed to 5min,
Speed of welding is 90mm/min, and after welding proceeds to 5min, speed of welding is 120mm/min.
Preferably, in described titanium alloy welding method, in described step one, it is cleaned at titanium alloy welding
When, clean out the burr of weld, then the greasy dirt washing weld with acetone.
Titanium alloy welding method of the present invention increased welding penetration, reduces weld porosity rate, improves welding
The stability at place.
Specific embodiment
The present invention is described in further detail below, with make those skilled in the art with reference to specification word being capable of evidence
To implement.
The present invention provides a kind of titanium alloy welding method, including：
Step one, it is cleaned at titanium alloy welding, to avoid other impurities that welding is interfered.
Step 2, preparation welding compound, the raw mixture of welding compound is to be made up of the following components of meter by weight：
MgF24～5 parts, 4～6 parts of NaF, Cr2O340～45 parts, TiO211～14 parts, CrCl37～9 parts, Ta2O510～13 parts, by institute
State raw mixture and be ground to particle diameter for 50～90 μm, then add acetone in described raw mixture.Welding compound can increase
Welding penetration, so that the mechanical property of weld is more stable, intensity is higher, and meanwhile, the application of welding compound contributes to reducing weldering
Connect the porosity, it is to avoid cracking.
Step 3, at twice by described welding compound brushing at titanium alloy welding, brush for the first time formed welding compound
Coating thickness is 0.04～0.06mm, is spaced 3～6min between brushing for the first time and second brushing, and second brushing is formed
Welding compound coating thickness be 0.3～0.5mm.Due to cleaning was carried out to weld, the titanium on weld surface in microstructure
There is pit, brushing for the first time first can be filled in these pits with welding compound between alloying pellet, after acetone is evaporated completely, weldering
Connect the metallic particles in agent to embed in these pits, be combined with titanium alloy particle；Afterwards, when brushing for second, in welding compound
Metallic particles cover weld top layer on, formed a continuous film.Said process is more beneficial for ensureing that weld is whole
Molding effect on body is homogeneous, well, thus ensureing the overall mechanical properties of weld stably.
Step 3, using argon tungsten-arc welding, weld is welded, welding current is 90～95A, weldingvoltage is 8V,
From starting to welding to proceed to 5min, speed of welding is 80～90mm/min, and after welding proceeds to 5min, speed of welding is
100～120mm/min.First adopt relatively small speed of welding, first weld is preheated, then using relatively large weldering
Connect speed, welding penetration can be increased further, it is to avoid bubble produces.
Preferably, in described titanium alloy welding method, in described step 2, described raw mixture is by by weight
The following components composition of number meter：MgF25 parts, 6 parts of NaF, Cr2O345 parts, TiO214 parts, CrCl39 parts, Ta2O513 parts.
Preferably, in described titanium alloy welding method, in described step 3, brush formed welding compound for the first time
Coating thickness is 0.04mm, and the formed welding compound coating thickness of second brushing is 0.3mm.
Preferably, in described titanium alloy welding method, in described step 3, from starting to welding to proceed to 5min,
Speed of welding is 90mm/min, and after welding proceeds to 5min, speed of welding is 120mm/min.
Preferably, in described titanium alloy welding method, in described step one, it is cleaned at titanium alloy welding
When, clean out the burr of weld, then the greasy dirt washing weld with acetone.
Embodiment one
A kind of titanium alloy welding method, including：
Step one, it is cleaned at titanium alloy welding；
Step 2, preparation welding compound, the raw mixture of welding compound is to be made up of the following components of meter by weight：
MgF24 parts, 4 parts of NaF, Cr2O340 parts, TiO211 parts, CrCl37 parts, Ta2O510 parts, described raw mixture is ground to grain
Footpath is 50 μm, then adds acetone in described raw mixture；
Step 3, at twice by described welding compound brushing at titanium alloy welding, brush for the first time formed welding compound
Coating thickness is 0.04mm, is spaced 3min between brushing for the first time and second brushing, brushes formed welding compound second
Coating thickness is 0.3mm；
Step 3, using argon tungsten-arc welding, weld is welded, welding current is 90A, weldingvoltage is 8V, from opening
Begin to proceed to 5min to welding, speed of welding is 80mm/min, after welding proceeds to 5min, speed of welding is 100mm/min.
Welding penetration reaches 4.89mm.This embodiment can with throat thickness as 4mm more than titanium alloy plate.
Embodiment two
A kind of titanium alloy welding method, including：
Step one, it is cleaned at titanium alloy welding；
Step 2, preparation welding compound, the raw mixture of welding compound is to be made up of the following components of meter by weight：
MgF25 parts, 6 parts of NaF, Cr2O345 parts, TiO214 parts, CrCl39 parts, Ta2O513 parts, described raw mixture is ground to grain
Footpath is 90 μm, then adds acetone in described raw mixture；
Step 3, at twice by described welding compound brushing at titanium alloy welding, brush for the first time formed welding compound
Coating thickness is 0.06mm, is spaced 6min between brushing for the first time and second brushing, brushes formed welding compound second
Coating thickness is 0.5mm；
Step 3, using argon tungsten-arc welding, weld is welded, welding current is 95A, weldingvoltage is 8V, from opening
Begin to proceed to 5min to welding, speed of welding is 90mm/min, after welding proceeds to 5min, speed of welding is 120mm/min.
Welding penetration reaches 4.78mm.This embodiment can with throat thickness as 4mm more than titanium alloy plate.
Although embodiment of the present invention is disclosed as above, it is not restricted to listed in description and embodiment
With, it can be applied to various suitable the field of the invention completely, for those skilled in the art, can be easily
Realize other modification, therefore under the general concept being limited without departing substantially from claim and equivalency range, the present invention does not limit
In specific details.
Claims (5)
1. a kind of titanium alloy welding method is it is characterised in that include：
Step one, it is cleaned at titanium alloy welding；
Step 2, preparation welding compound, the raw mixture of welding compound is to be made up of the following components of meter by weight：MgF24
～5 parts, 4～6 parts of NaF, Cr2O340～45 parts, TiO211～14 parts, CrCl37～9 parts, Ta2O510～13 parts, by institute
State raw mixture and be ground to particle diameter for 50～90 μm, then add acetone in described raw mixture；
Step 3, at twice by described welding compound brushing at titanium alloy welding, brush for the first time formed welding compound film
Thickness is 0.04～0.06mm, is spaced 3～6min between brushing for the first time and second brushing, brushes formed weldering second
Connecing agent coating thickness is 0.3～0.5mm；
Step 3, using argon tungsten-arc welding, weld is welded, welding current is 90～95A, weldingvoltage is 8V, from opening
Begin to proceed to 5min to welding, speed of welding be 80～90mm/min, welding proceed to 5min after, speed of welding be 100～
120mm/min.
2. titanium alloy welding method as claimed in claim 1 is it is characterised in that in described step 2, described raw mixture
It is to be made up of the following components of meter by weight：MgF25 parts, 6 parts of NaF, Cr2O345 parts, TiO214 parts, CrCl39 parts,
Ta2O513 parts.
3. titanium alloy welding method as claimed in claim 2 is it is characterised in that in described step 3, brush institute's shape for the first time
The welding compound coating thickness becoming is 0.04mm, and the formed welding compound coating thickness of second brushing is 0.3mm.
4. titanium alloy welding method as claimed in claim 3 is it is characterised in that in described step 3, from starting to welding into
Row arrives 5min, and speed of welding is 90mm/min, and after welding proceeds to 5min, speed of welding is 120mm/min.
5. titanium alloy welding method as claimed in claim 4 is it is characterised in that in described step one, at titanium alloy welding
When being cleaned, clean out the burr of weld, then the greasy dirt washing weld with acetone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610918411.8A CN106425043B (en) | 2016-10-21 | 2016-10-21 | titanium alloy welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610918411.8A CN106425043B (en) | 2016-10-21 | 2016-10-21 | titanium alloy welding method |
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| CN106425043A true CN106425043A (en) | 2017-02-22 |
| CN106425043B CN106425043B (en) | 2018-09-25 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1555957A (en) * | 2004-01-09 | 2004-12-22 | 国营七四一四厂 | Tungsten electrode argon arc welding active flux for increasing welding fusion depth |
| CN102794582A (en) * | 2012-08-15 | 2012-11-28 | 北京工业大学 | Soldering flux matched with high-melting-point solder and preparation method thereof |
| CN103878470A (en) * | 2014-03-31 | 2014-06-25 | 山东大学 | Tungsten electrode argon arc welding process of dissimilar materials of titanium alloy and nickel alloy |
| CN104128696A (en) * | 2014-06-30 | 2014-11-05 | 中国化学工程第十四建设有限公司 | Titanium pipeline argon arc welding process method |
| CN104476015A (en) * | 2014-10-31 | 2015-04-01 | 天津市宏远钛铁有限公司 | Titanium alloy solder and soldering method thereof |
| CN104551448A (en) * | 2015-01-19 | 2015-04-29 | 九龙坡区辉腾机械加工厂 | Novel soldering flux and preparation method thereof |
-
2016
- 2016-10-21 CN CN201610918411.8A patent/CN106425043B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1555957A (en) * | 2004-01-09 | 2004-12-22 | 国营七四一四厂 | Tungsten electrode argon arc welding active flux for increasing welding fusion depth |
| CN102794582A (en) * | 2012-08-15 | 2012-11-28 | 北京工业大学 | Soldering flux matched with high-melting-point solder and preparation method thereof |
| CN103878470A (en) * | 2014-03-31 | 2014-06-25 | 山东大学 | Tungsten electrode argon arc welding process of dissimilar materials of titanium alloy and nickel alloy |
| CN104128696A (en) * | 2014-06-30 | 2014-11-05 | 中国化学工程第十四建设有限公司 | Titanium pipeline argon arc welding process method |
| CN104476015A (en) * | 2014-10-31 | 2015-04-01 | 天津市宏远钛铁有限公司 | Titanium alloy solder and soldering method thereof |
| CN104551448A (en) * | 2015-01-19 | 2015-04-29 | 九龙坡区辉腾机械加工厂 | Novel soldering flux and preparation method thereof |
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| CN106425043B (en) | 2018-09-25 |
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