CN1559740A - Diffusion welding technology of activity increasing intermediate layer of iron trialuminium alloy and steel - Google Patents
Diffusion welding technology of activity increasing intermediate layer of iron trialuminium alloy and steel Download PDFInfo
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- CN1559740A CN1559740A CNA2004100234956A CN200410023495A CN1559740A CN 1559740 A CN1559740 A CN 1559740A CN A2004100234956 A CNA2004100234956 A CN A2004100234956A CN 200410023495 A CN200410023495 A CN 200410023495A CN 1559740 A CN1559740 A CN 1559740A
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Abstract
A diffusion welding technology for Fe3Al alloy and steel includes such steps as mechanically and chemically treating the surfaces to be welded of Fe3Al alloy and steel, adding an active layer between them, putting them in a vacuum chamber, and diffusion welding.
Description
(1) technical field
The present invention relates to welding procedure, belong to welding technology field iron trialuminum based alloy and steel.
(2) background technology
By the diffusion welding craft realization iron trialuminum based alloy of interpolation active intermediate and the welding of steel, this method is particularly useful for the welding of iron trialuminum based alloy foreign material under the heat-resistant anticorrosion condition.
Iron trialuminum based alloy has good anti-oxidant, corrosion resistance and wearability preferably, can be widely used in engineering structures such as power construction, petrochemical industry, nuclear power station.Iron trialuminum based alloy and carbon steel, stainless steel are welded the composite construction of making, can give full play to separately performance advantage of two kinds of materials, improve service life of structure and equipment greatly.But because iron trialuminum based alloy rigidity height, plasticity are relatively poor, stronger hydrogen embrittlement sensitiveness is arranged, the thermophysical property of iron trialuminum based alloy and steel differs greatly in addition, form bigger welding stress in joint area during welding, be easy to produce weld crack, hindered applying of iron trialuminum based alloy.
At present, mainly adopt electron beam welding and argon tungsten-arc welding about the welding of iron trialuminum based alloy both at home and abroad.When adopting electron beam welding,, suppressed the illeffects of hydrogen, and the high-energy of concentrating input makes the welding fusion area organize refinement to some extent, can avoid the generation of weld crack, but this method is not suitable for big thickness workpiece because welding process is to carry out in a vacuum.When adopting argon tungsten-arc welding, alloying component and welding condition have bigger influence to the structure property of iron trialuminum based alloy welding point.The iron trialuminum based alloy that only contains Cr4.45%, Nb1.0%, at strictness control speed of welding (v=4.2～8.5mm/s) and under the condition of weld heat input, adopt technological measures such as strict weld preheating, postheating just can avoid the generation of weld crack, so accommodation is limited.
(3) summary of the invention
The present invention is directed to the deficiencies in the prior art, a kind of wide accommodation is provided, can obtain the interface in conjunction with good welding point, make the shear strength of diffusion welding (DW) joint reach 260MPa, satisfy the diffusion welding craft of the interpolation active intermediate of the iron trialuminum based alloy of iron trialuminum based alloy and carbon steel, the instructions for use of stainless steel diffusion welding (DW) joint in wear-resisting, corrosion-resistant occasion and steel.
Processing step of the present invention is as follows:
Welding surface with iron trialuminum based alloy and steel before weldering passes through machinery and chemical treatment; Add active intermediate between iron trialuminum based alloy and the steel; Weldment assembled place vacuum chamber; The diffusion welding craft parameter is: vacuum is 4.5 * 10
-5～1 * 10
-3Pa, welding pressure 10～16MPa, 980～1100 ℃ of welding temperatures, temperature retention time 25～60min.
Described active intermediate is a metal forming, and thickness is 10～160 μ m.
Described metal forming is that purity is greater than 99% titanium foil or niobium paper tinsel.
Before the weldering active intermediate is folded up between iron trialuminum based alloy and steel workpiece, places the vacuum chamber of vacuum diffusion welding, and use, lower chuck compresses.
The present invention proposes the welding to iron trialuminum based alloy and steel, and adopting interpolation is the diffusion welding craft of active intermediate with the metal forming.This active intermediate can play activation iron trialuminum based alloy and contact the surface with the diffusion welding (DW) of steel in welding process, iron trialuminum based alloy and carbon steel, stainless good combination are guaranteed in the diffusion that makes it that the diffusion reaction of Al takes place and promote the Al atom.In addition, under the diffusion welding (DW) condition, active intermediate produces Ti, Nb isoreactivity atom, spreads in iron trialuminum based alloy and steel rapidly, combines with diffusion between the steel interface with promotion iron trialuminum based alloy.
The present invention adopts the metal forming that contains Ti, Nb element as active intermediate, and their activation temperature scope is lower than iron trialuminum based alloy, carbon steel and stainless softening temperature.During diffusion welding (DW), priming reaction at first takes place in the active intermediate tinsel, and the diffusion welding (DW) that decomposites Ti, Nb isoreactivity atom and be diffused into iron trialuminum based alloy and steel rapidly contact surperficial.This activation process activates iron trialuminum based alloy on the one hand, and diffusion welding (DW) contacts surperficial Al, Fe atom with steel, and active atomic Ti, Nb and iron trialuminum based alloy and steel Al, Fe atom generation diffusion reaction at the interface generates new phase structure on the other hand.The diffusion reaction layer that active atomic Ti, Nb form between iron trialuminum based alloy and carbon steel, stainless steel helps promoting that iron trialuminum based alloy and steel form good diffusion combination, improves the strength character of diffusion welding (DW) joint.
Before weldering, active intermediate titanium foil or niobium paper tinsel are folded up between iron trialuminum based alloy and steel workpiece, place the vacuum chamber of vacuum diffusion welding, and use, lower chuck compresses.Can reduce the microcosmic gap between iron trialuminum based alloy, active intermediate and the steel, increase the contact area of iron trialuminum based alloy and steel, promote Al, the diffusion of Fe atom at the interface of Ti, Nb and iron trialuminum based alloy and steel, help constantly carrying out of diffusion reaction, improve the bond strength of diffusion weld interface.
The diffusion welding (DW) joint that active intermediate that employing the present invention provides and technological parameter obtain, its microhardness is HM450, shear strength reaches 260MPa, apparently higher than the intensity (96MPa) of iron-aluminium alloy and the direct diffusion welding (DW) gained of steel joint.Can satisfy that iron trialuminum based alloy and carbon steel, stainless steel diffusion welding (DW) joint are wear-resisting, the instructions for use of corrosion resistance occasion.
The diffusion welding craft of the interpolation active intermediate that the present invention proposes is being an important breakthrough aspect the welding of iron trialuminum based alloy foreign material.This welding procedure can guarantee that iron trialuminum based alloy combines with the abundant diffusion at steel interface, Ti in the active intermediate, the activation of Nb active atomic, decomposition also are diffused into the contact surface of iron trialuminum based alloy and steel continuously, efficiently solve between iron trialuminum based alloy and carbon steel, the stainless steel and be difficult to spread the technical barrier that combines, improved the strength character of iron trialuminum based alloy and steel diffusion welding (DW) joint.Advantages such as the present invention has easy to operate, and is easy to utilize.Be particularly useful for iron trialuminum based alloy and carbon steel, stainless welding, also can be applicable to iron trialuminum based alloy and other low-alloy steel, heat-resistant steel welding.
(4) specific embodiment
Embodiment 1: processing step is: it is 20 μ m titanium foils that the titanium of purity＞99% is prepared into thickness by drawing method; The steel surface of diameter phi 50 * 2mm is carried out pickling 8min, soak 10min with sand papering to occurring putting into acetone soln behind the metallic luster then, again iron trialuminum based alloy and the steel surface after acetone soaks of diameter phi 50 * 3mm are cleaned with alcohol; With the active intermediate thickness for preparing is that 20 μ m titanium foils fold up on the contact-making surface to be welded of iron trialuminum based alloy and carbon steel; The iron trialuminum based alloy and the carbon steel sub-assembly that will accompany active intermediate then place the vacuum chamber of vacuum diffusion welding, and use, lower chuck compresses, and requires whole combination weldment parallel with the contact surface of pressure head.The technological parameter of diffusion welding (DW) is: vacuum 4.5 * 10
-4Pa, 1050 ℃ of welding temperatures, temperature retention time 40min, welding pressure 14.5MPa, postwelding slowly cools off.Make diffusion welding (DW) joint shear strength reach 210MPa.
Embodiment 2: processing step is: it is 10 μ m niobium paper tinsels that the niobium of purity＞99% is prepared into thickness by drawing method; The 1Cr18Ni9Ti stainless steel surfaces that test plate (panel) is of a size of 100mm * 40mm * 5mm carries out pickling 5min, soak 10min with sand papering to occurring putting into acetone soln behind the metallic luster then, the iron trialuminum based alloy and the stainless steel surfaces after acetone soaks that will be of a size of 100mm * 40mm * 5mm are again cleaned with alcohol; With the active intermediate thickness for preparing is that 10 μ m niobium paper tinsels fold up on iron trialuminum based alloy and stainless contact-making surface to be welded; The iron trialuminum based alloy and the stainless steel sub-assembly that will accompany active intermediate then place the vacuum chamber of vacuum diffusion welding, and use, lower chuck compresses, and requires whole combination weldment parallel with the contact surface of pressure head.The technological parameter of diffusion welding (DW) is: vacuum 4.5 * 10
-4Pa, 1030 ℃ of welding temperatures, temperature retention time 35min, welding pressure 13.5MPa, postwelding slowly cools off.Make diffusion welding (DW) joint shear strength reach 260MPa.
Claims (4)
1, the diffusion welding craft of the interpolation active intermediate of a kind of iron trialuminum based alloy and steel, processing step is as follows: the welding surface with iron trialuminum based alloy and steel before weldering passes through machinery and chemical treatment, add active intermediate between iron trialuminum based alloy and the steel, weldment assembled place vacuum chamber, the diffusion welding craft parameter is: vacuum is 4.5 * 10
-5～1 * 10
-3Pa, welding pressure 10～16MPa, 980～1100 ℃ of welding temperatures, temperature retention time 25～60min.
2, the diffusion welding craft of the interpolation active intermediate of iron trialuminum based alloy according to claim 1 and steel is characterized in that, described active intermediate is a metal forming, and thickness is 10～160 μ m.
3, the diffusion welding craft of the interpolation active intermediate of iron trialuminum based alloy according to claim 2 and steel is characterized in that, described metal forming is that purity is greater than 99% titanium foil or niobium paper tinsel.
4, the diffusion welding craft of the interpolation active intermediate of iron trialuminum based alloy according to claim 1 and steel, it is characterized in that, before the weldering active intermediate is folded up between iron trialuminum based alloy and steel workpiece, places the vacuum chamber of vacuum diffusion welding, and use, lower chuck compresses.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410023495 CN1263578C (en) | 2004-02-25 | 2004-02-25 | Diffusion welding technology of activity increasing intermediate layer of iron trialuminium alloy and steel |
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|---|---|---|---|
| CN 200410023495 CN1263578C (en) | 2004-02-25 | 2004-02-25 | Diffusion welding technology of activity increasing intermediate layer of iron trialuminium alloy and steel |
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| Publication Number | Publication Date |
|---|---|
| CN1559740A true CN1559740A (en) | 2005-01-05 |
| CN1263578C CN1263578C (en) | 2006-07-12 |
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| CN 200410023495 Expired - Fee Related CN1263578C (en) | 2004-02-25 | 2004-02-25 | Diffusion welding technology of activity increasing intermediate layer of iron trialuminium alloy and steel |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100434225C (en) * | 2005-09-06 | 2008-11-19 | 中国航天科技集团公司第一研究院第七○三研究所 | Composite connecting method with transition liquid phase diffusion welding of intermetallic Ti-Al compound alloy |
| CN102069295A (en) * | 2010-12-09 | 2011-05-25 | 上海工程技术大学 | Method for preparing Fe3Al/Al composite structure by diffusion bonding of reinforcing layer |
| CN102069290A (en) * | 2010-12-09 | 2011-05-25 | 上海工程技术大学 | Process for preparing Fe3Al/Al composite structure by diffusion bonding |
| CN102218592A (en) * | 2011-05-12 | 2011-10-19 | 西北工业大学 | Diffusion welding method of titanium or titanium alloy and stainless steel |
| CN104308360A (en) * | 2014-09-01 | 2015-01-28 | 山东大学 | Diffusion bonding method for graphite, low carbon steel and stainless steel |
| CN104752119A (en) * | 2013-12-25 | 2015-07-01 | 中微半导体设备(上海)有限公司 | Manufacturing method for plasma processing cavity and manufacturing method for electrostatic chuck of plasma processing cavity |
| CN104741772A (en) * | 2013-12-27 | 2015-07-01 | 北京有色金属研究总院 | Welding method for connecting stainless steel with aluminum alloy |
| CN105264245A (en) * | 2013-04-09 | 2016-01-20 | 斯凯孚公司 | Bearing component and its manufacturing method |
| CN106041289A (en) * | 2016-07-05 | 2016-10-26 | 山东建筑大学 | Diffusion connection technology of laminated composite material and low-alloy steel |
-
2004
- 2004-02-25 CN CN 200410023495 patent/CN1263578C/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100434225C (en) * | 2005-09-06 | 2008-11-19 | 中国航天科技集团公司第一研究院第七○三研究所 | Composite connecting method with transition liquid phase diffusion welding of intermetallic Ti-Al compound alloy |
| CN102069295A (en) * | 2010-12-09 | 2011-05-25 | 上海工程技术大学 | Method for preparing Fe3Al/Al composite structure by diffusion bonding of reinforcing layer |
| CN102069290A (en) * | 2010-12-09 | 2011-05-25 | 上海工程技术大学 | Process for preparing Fe3Al/Al composite structure by diffusion bonding |
| CN102069295B (en) * | 2010-12-09 | 2012-12-12 | 上海工程技术大学 | Method for preparing Fe3Al/Al composite structure by diffusion bonding of reinforcing layer |
| CN102069290B (en) * | 2010-12-09 | 2013-01-09 | 上海工程技术大学 | Process for preparing Fe3Al/Al composite structure by diffusion bonding |
| CN102218592A (en) * | 2011-05-12 | 2011-10-19 | 西北工业大学 | Diffusion welding method of titanium or titanium alloy and stainless steel |
| US10737354B2 (en) | 2013-04-09 | 2020-08-11 | Aktiebolaget Skf | Bearing component |
| CN105264245A (en) * | 2013-04-09 | 2016-01-20 | 斯凯孚公司 | Bearing component and its manufacturing method |
| CN105264245B (en) * | 2013-04-09 | 2018-07-06 | 斯凯孚公司 | Parts of bearings and its manufacturing method |
| TWI578365B (en) * | 2013-12-25 | 2017-04-11 | A method of manufacturing a plasma processing chamber and an electrostatic chuck thereof | |
| CN104752119A (en) * | 2013-12-25 | 2015-07-01 | 中微半导体设备(上海)有限公司 | Manufacturing method for plasma processing cavity and manufacturing method for electrostatic chuck of plasma processing cavity |
| CN104741772A (en) * | 2013-12-27 | 2015-07-01 | 北京有色金属研究总院 | Welding method for connecting stainless steel with aluminum alloy |
| CN104308360A (en) * | 2014-09-01 | 2015-01-28 | 山东大学 | Diffusion bonding method for graphite, low carbon steel and stainless steel |
| CN104308360B (en) * | 2014-09-01 | 2016-01-13 | 山东大学 | A kind of graphite and mild steel, stainless diffusion connection method |
| CN106041289A (en) * | 2016-07-05 | 2016-10-26 | 山东建筑大学 | Diffusion connection technology of laminated composite material and low-alloy steel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1263578C (en) | 2006-07-12 |
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