CN101633067A - Titanium and steel braze welding method - Google Patents
Titanium and steel braze welding method Download PDFInfo
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- CN101633067A CN101633067A CN200910162842A CN200910162842A CN101633067A CN 101633067 A CN101633067 A CN 101633067A CN 200910162842 A CN200910162842 A CN 200910162842A CN 200910162842 A CN200910162842 A CN 200910162842A CN 101633067 A CN101633067 A CN 101633067A
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Abstract
The invention discloses a titanium and steel braze welding method which relates to a method for welding titanium products and steel products in an atmospheric environment by an argon-arc braze welding technology and is characterized in that: during the braze welding, gas braze welding is adopted to perform advance braze welding on the steel products, and then the argon-arc braze welding is adopted to perform braze welding on the steel products with the advance braze welding and the titanium products. The titanium and steel braze welding method effectively solves the problem that the argon-arc braze welding lacks of capability for removing oxide coating from the surfaces of the steel products and the difficult problem that the gas braze welding cannot be adopted by titanium products, obtains brazing seams with high strength, is suitable for the braze welding of titanium and steel in titanium-steel composite board chemical equipment and is also suitable for the occasion that titanium and steel need to be connected in industrial fields such as machinery, electron, and the like.
Description
Technical field
The method for welding of a kind of titanium and steel, relate to a kind of method that in atmospheric environment, adopts the argon arc soldering processes to weld titanium material and steel, the soldering that is used for titanium steel composite board chemical industry equipment titanium and steel is connected, and needs occasion that titanium is connected with steel in the industrial circle such as machinery, electronics.
Background technology
Titanium has higher chemism, under the normal temperature in air can with the oxygen generation stable oxide film that reacts, high temperature down can and most of metal material generation chemical reaction generate compound between brittle metal, temperature is during greater than 600 ℃, can and oxygen generation vigorous reaction even combustion phenomena occurs.Fusion welding methods such as conventional welding procedure such as electric welding, gas welding, plasma, electron beam can't be realized the welding of titanium and steel, adopt welding methods such as explosive welding, Diffusion Welding, soldering generally speaking, these methods can effectively suppress titanium and produce too much fragility mutually with steel at the interface.Oxidation at high temperature takes place for fear of titanium, vacuum diffusion welding connects and vacuum brazing is the method that the most generally adopts, but because the restriction of vacuum-chamber dimensions, the size of welding work pieces is very limited, at a lot of industrial circles, need the capacity of the accessory size of welding, therefore need in atmospheric environment, carry out soldering well beyond vacuum chamber.
The spreading property of solder is an important indicator of soldering processes, and the situation of surface of the work oxide-film has decisive influence to the solder spreading property.The existence of oxide-film can increase the angle of wetting of solder, hinders flowing of solder, thereby influences the ability that solder is filled the gap.Therefore must thoroughly remove oxide-film during soldering.Adopt brazing flux to remove oxide-film when generally the way of Cai Yonging is welding; can select for use several brazing fluxes to remove the oxide-film of steel surface; but the oxide-film of removing titanium material surface is wanted the many of difficulty; the activity of used brazing flux must be stronger than the activity of titanyl compound; and at high temperature can effectively protect titanium material surface not by extraneous ambient oxidation; yet satisfying these conditions can be difficult to find by practical titanium material brazing flux; therefore the oxide-film on titanium material surface can not be removed with the method that applies brazing flux, and this is the main cause that gas brazing can not be used for the soldering of titanium material.
When carrying out the soldering of titanium in atmosphere, can adopt argon arc welding electric arc that titanium is heated to the needed temperature of soldering, under arc temperature, the oxide-film of titanium can decompose, and reaches the needed primary condition of soldering.
Yet the effect of removing the steel surface oxide-film with electric arc but can not show a candle to brazing flux.Under brazing temperature, the brazing flux of molten condition is thorough decomposing oxidation film not only, and can cover steel surface and play a very good protection, so the mobile performance of solder in brazing flux is better.When heating with argon arc, can't use brazing flux simultaneously, can only lean on electric arc to remove oxide-film, and the energy of electric arc be more concentrated, solder is difficult for sprawling, and appearance of weld is relatively poor.
When adopting argon arc soldering welding, must consider steel and the different requirements of titanium simultaneously to soldering processes.When adopting argon arc welding directly to carry out the weldering of titanium and drill rod, the problem of appearance or difficulty mainly comprise following several aspect:
(1) can't thoroughly remove the oxide-film of steel surface, solder is filled the indifferent of gap, and brazed seam intensity is lower.
(2) solder the flowability of steel surface a little less than, weld appearance is relatively poor.
(3) cause steel surface fusing easily, the differential hardening district in soldered fitting, occurs, produce stress and concentrate or form formation of crack, the intensity of structure is had a negative impact.
Summary of the invention
The purpose of invention is exactly the deficiency that exists at above-mentioned prior art, and a kind of restriction that can not be subjected to workpiece size is provided, and can titanium and steel carried out the titanium that soldering is connected and the method for welding of steel in atmospheric environment.
The objective of the invention is to be achieved through the following technical solutions.
The method for welding of a kind of titanium and steel is characterized in that its brazing process at first adopts gas brazing that steel is carried out pre-soldering, adopts the argon arc soldering to carry out soldering through the steel and the titanium of pre-soldering then.
The method for welding of a kind of titanium of the present invention and steel, it is characterized in that it is to 800-950 ℃ with flame heat steel zone to be welded that described employing gas brazing is carried out pre-brazing process to steel, add brazing flux and solder again, at steel region surface to be welded built-up welding one solder layer equably, built-up welding solder layer thickness is 1-2mm.
The method for welding of a kind of titanium of the present invention and steel, it is characterized in that it is the overlay cladding top that the titanium plate is installed in steel region surface to be welded that the soldering of described employing argon arc will be carried out brazing process through the steel of pre-soldering and titanium, adopt argon arc heating titanium plate and built-up welding solder layer to 920-950 ℃, adding solder BAg again expires the weldering of the gap between titanium plate and the overlay cladding.
The method for welding of a kind of titanium of the present invention and steel is characterized in that described employing gas brazing carries out pre-brazing process to steel and add brazing flux and solder, and solder is BAgCu28 or BAg, and brazing flux is agent 101.
Because the performance of titanium material and steel surface oxide-film exists than big-difference, the brazing flux that in the time of can adopting flame heat in atmospheric environment titanyl compound is restored is seldom, so titanium is difficult to realize soldering with the method for gas brazing; The oxide of steel surface then is easy to suitable brazing flux it be decomposed, and can adopt gas brazing to weld easily.
The method for welding of a kind of titanium of the present invention and steel, according to the different characteristics of titanium material and steel, adopt gas brazing and argon arc soldering to weld respectively, at first adopt gas brazing that steel is carried out pre-soldering, at the solder of welded seam area built-up welding one deck 1-2mm, the solder of employing is BAgCu28 or BAg; Adopt the argon arc soldering to carry out soldering then through the steel and the titanium of pre-soldering.Effectively overcome the argon arc soldering and removed the problem of oxide-film scarce capacity and the difficult problem that the titanium material can not be used gas brazing at steel surface, obtained high-intensity brazed seam, be applicable to that the soldering of titanium and steel is connected in the titanium steel composite board chemical industry equipment, and need occasion that titanium is connected with steel in the industrial circle such as machinery, electronics.
The specific embodiment
The method for welding of a kind of titanium and steel, the step of its specific operation process comprises:
(1) in the pre-soldering of steel surface
The steel surface that needs soldering with the mechanical means cleaning, remove surface and oil contaminant, iron rust etc., to 800-950 ℃, add brazing flux agent 101 and solder BAgCu28 or BAg with flame heat zone to be welded, at steel surface built-up welding one deck solder equably, overlay cladding thickness is 1-2mm.
(2) soldering of titanium material and overlay cladding
Clean the titanium plate with nitric acid and hydrofluoric acid aqueous solution, remove titanium plate surface oxide layer, the pickle prescription is HNO
3(40%)+HF (2%)+H
2O.
Clear up brazing flux residue and other dirts on the overlay cladding simultaneously, the titanium plate that cleaning is good is installed in above-mentioned overlay cladding top, adopts about argon arc heating titanium plate and overlay cladding to 950 ℃, and it is full with the weldering of the gap between titanium plate and the overlay cladding to add solder BAg.
Embodiment 1
The lap brazing of titanium plate and steel plate
Titanium plate and steel plate are carried out lap brazing.The method that adopts machining just iron rust, the cleaning oil pollution of surface of steel plate is clean; Be heated to 800-950 ℃ with gas brazing at the steel plate welding surface, with solder BAgCu28, brazing flux agent 101, built-up welding is on the steel plate of welding surface heating, and overlay cladding thickness is 1-2mm.
With welding slag and other foreign matters on the mechanical means removing overlay cladding.
Clean titanium plate surface film oxide with 40% nitric acid and 2% hydrofluoric acid aqueous solution, be placed on the steel plate after the oven dry.
In the fillet in normal shear position, with argon arc welding power source heating overlay cladding and titanium plate, titanium plate one side is protected with the argon shield cover during heating, avoids oxidation.Electric arc deflection overlay cladding one side equates the temperature of overlay cladding and titanium plate substantially.Reach 950 ℃, add the BAg solder, overlay cladding and the soldering of titanium plate are got up.Employing is welded appropriate sealing run with quadrat method.
Embodiment 2
Titanium plate and steel plate are docked soldering.The method that adopts machining just iron rust, the cleaning oil pollution of surface of steel plate is clean; In surface of steel plate and end face built-up welding, solder is BAgCu28 with gas brazing, and brazing flux is agent 101, and overlay cladding thickness is 1-2mm.
With welding slag and other foreign matters on the mechanical means removing overlay cladding.
Clean titanium plate surface film oxide with 40% nitric acid and 2% hydrofluoric acid aqueous solution, put together parallel of oven dry back with steel plate, the gap is 1-1.5mm.
In the weld seam front, with argon arc welding power source heating overlay cladding and titanium plate, back of weld is protected with the argon shield cover, avoids oxidation.Electric arc is aimed at welded gaps, and the temperature of overlay cladding and titanium plate is equated substantially.When reaching 950 ℃ of left and right sides, add the BAg solder, overlay cladding and the soldering of titanium plate are got up.
Employing is carried out soldering with quadrat method with the back side.
Embodiment 3
Titanium plate and steel plate are docked soldering.The method that adopts machining just iron rust, the cleaning oil pollution of surface of steel plate is clean; Carry out built-up welding with gas brazing at surface of steel plate, solder is BAgCu28, and brazing flux is agent 101, and overlay cladding thickness is 1-2mm.
With welding slag and other foreign matters on the mechanical means removing overlay cladding.
Clean titanium plate surface film oxide with 40% nitric acid and 2% hydrofluoric acid aqueous solution, vertically be placed on the steel plate overlay cladding after the oven dry.
In a side of angle welding, with argon arc welding power source heating overlay cladding and titanium plate, the angle welding opposite side is protected with the argon shield cover, avoids oxidation.Electric arc deflection overlay cladding equates the temperature of overlay cladding and titanium plate substantially.When reaching 950 ℃ of left and right sides, add the BAg solder, overlay cladding and the soldering of titanium plate are got up.
Employing welds with the angle welding of quadrat method with opposite side.
Claims (4)
1. the method for welding of titanium and steel is characterized in that its brazing process at first adopts gas brazing that steel is carried out pre-soldering, adopts the argon arc soldering to carry out soldering through the steel and the titanium of pre-soldering then.
2. the method for welding of a kind of titanium according to claim 1 and steel, it is characterized in that it is to 800-950 ℃ with flame heat steel zone to be welded that described employing gas brazing is carried out pre-brazing process to steel, add brazing flux and solder, at steel region surface to be welded built-up welding one solder layer equably, built-up welding solder depth is 1-2mm.
3. according to the method for welding of described a kind of titanium of claim 1 and steel, it is characterized in that it is the overlay cladding top that the titanium plate is installed in steel region surface to be welded that the soldering of described employing argon arc will be carried out brazing process through the steel of pre-soldering and titanium, adopt argon arc heating titanium plate and built-up welding solder layer to 900-950 ℃, adding solder BAg again expires the weldering of the gap between titanium plate and the built-up welding solder layer.
4. according to the method for welding of described a kind of titanium of claim 1 and steel, it is characterized in that described employing gas brazing carries out pre-brazing process to steel and add brazing flux and solder, solder is BAgCu28 or BAg, brazing flux is class agent 101.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910162842A CN101633067A (en) | 2009-08-10 | 2009-08-10 | Titanium and steel braze welding method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910162842A CN101633067A (en) | 2009-08-10 | 2009-08-10 | Titanium and steel braze welding method |
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| CN101633067A true CN101633067A (en) | 2010-01-27 |
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| CN200910162842A Pending CN101633067A (en) | 2009-08-10 | 2009-08-10 | Titanium and steel braze welding method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102019488A (en) * | 2010-12-08 | 2011-04-20 | 西安优耐特容器制造有限公司 | Electric arc fusion welding-braze welding method of niobium and steel |
| CN105397222A (en) * | 2015-12-16 | 2016-03-16 | 郑州机械研究所 | Flame preheating tungsten electrode argon arc brazing method |
| CN108296584A (en) * | 2018-02-08 | 2018-07-20 | 北京科技大学 | A kind of titanium-double heat source low_input_power method for welding of steel board docking |
| CN109226918A (en) * | 2018-09-01 | 2019-01-18 | 哈尔滨工程大学 | A kind of titanium based on pulse matching control/steel dissimilar metal plasma shunts melt pole electrical arc brazing device and method |
| CN111673218A (en) * | 2020-06-24 | 2020-09-18 | 山西丰喜化工设备有限公司 | Silver brazing method for steel and titanium lining |
-
2009
- 2009-08-10 CN CN200910162842A patent/CN101633067A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102019488A (en) * | 2010-12-08 | 2011-04-20 | 西安优耐特容器制造有限公司 | Electric arc fusion welding-braze welding method of niobium and steel |
| CN105397222A (en) * | 2015-12-16 | 2016-03-16 | 郑州机械研究所 | Flame preheating tungsten electrode argon arc brazing method |
| CN105397222B (en) * | 2015-12-16 | 2017-11-28 | 郑州机械研究所 | A kind of flame preheats tungsten argon arc method for welding |
| CN108296584A (en) * | 2018-02-08 | 2018-07-20 | 北京科技大学 | A kind of titanium-double heat source low_input_power method for welding of steel board docking |
| CN108296584B (en) * | 2018-02-08 | 2020-08-25 | 北京科技大学 | Titanium-steel plate butt joint double-heat-source low-heat-input brazing method |
| CN109226918A (en) * | 2018-09-01 | 2019-01-18 | 哈尔滨工程大学 | A kind of titanium based on pulse matching control/steel dissimilar metal plasma shunts melt pole electrical arc brazing device and method |
| CN111673218A (en) * | 2020-06-24 | 2020-09-18 | 山西丰喜化工设备有限公司 | Silver brazing method for steel and titanium lining |
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Open date: 20100127 |