CN102728937B - Dissimilar metal welding method of titanium alloy and austenitic stainless steel - Google Patents
Dissimilar metal welding method of titanium alloy and austenitic stainless steel Download PDFInfo
- Publication number
- CN102728937B CN102728937B CN201210231712.5A CN201210231712A CN102728937B CN 102728937 B CN102728937 B CN 102728937B CN 201210231712 A CN201210231712 A CN 201210231712A CN 102728937 B CN102728937 B CN 102728937B
- Authority
- CN
- China
- Prior art keywords
- welding
- titanium alloy
- stainless steel
- austenitic stainless
- argon
- 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.)
- Expired - Fee Related
Links
Landscapes
- Arc Welding In General (AREA)
Abstract
The invention discloses a dissimilar metal welding method of titanium alloy and austenitic stainless steel, comprising the following steps of: carrying out grinding and assembling before welding; and carrying out welding by using a method of filler wire pulsed TIG welding. With the dissimilar metal welding method of the titanium alloy and the austenitic stainless steel of the invention, by welding parameter adjustment, preheating before the welding, thermal insulation and slow cooling after the welding and control of melting and solidification conditions of a titanium alloy and stainless steel welding pool, a welding joint which has nice weld formation, and has no defects of cracks and air holes is obtained. The welding method of the invention has high welding efficiency, low cost, convenient and flexible operation, and can meet requirement of the welding joint of welding the dissimilar metals of the titanium alloy and the austenitic stainless steel.
Description
Technical field
The present invention relates to a kind of welding method of dissimilar metal, relate in particular to a kind of pulsed tungsten argon arc weld(ing) method of titanium alloy and austenitic stainless steel, belong to welding technology field.
Background technology
Titanium alloy and stainless being welded on have good application potential in the energy, chemical industry and atomic energy industry, but the welding difficulty of the two is very large.Adopt electron-bombardment welding and vacuum diffusion welding can realize titanium alloy and stainless welding, but the welding equipment of these two kinds of methods is expensive, strict to the requirement of welding technology controlling and process.If can realize under melting welding condition titanium alloy and stainless reliable connection, will there is good application prospect.
Titanium alloy and stainless welding technology difficulty are very large, because titanium alloy and stainless thermal conductivity and linear expansion coefficient are widely different, expanding with heat and contract with cold when melting welding caused very large welding stress, very easily causes weld cracking.At present be mainly to adopt the method for dosing transition intermediate layer between titanium alloy and stainless steel, realize titanium alloy and be connected with stainless melting welding.But this method complex process, implements and also has great difficulty, is difficult to apply.
Summary of the invention
For the deficiency of existing titanium alloy and stainless steel dissimilar metal welding techniques, the problem to be solved in the present invention is, propose a kind of simple and easy to do, welding quality stable for the welding method between titanium alloy and austenitic stainless steel dissimilar metal.Adopt method of the present invention can obtain the welding point of bright and clean fine and closely woven, the flawless of face of weld and pore, can meet the technical property requirements that titanium alloy and austenitic stainless steel different-metal material welding are produced.This technology adopts stainless steel welding stick as filling metal, by before strict weldering and the control of postwelding temperature, and in whole welding process good protection, realize titanium alloy be connected with stainless melting welding.This welding procedure has low, the simple, convenient feature such as flexibly of cost, has good application prospect in the field such as the energy, chemical industry.
The welding method of titanium alloy of the present invention and austenitic stainless steel dissimilar metal, adopts the pulsed tungsten argon arc weld(ing) that fills silk, and comprises the steps:
(1) weldering is front by the sand papering cleaning of the joint of titanium alloy and austenitic stainless steel, exposes metallic luster; Filler wire sand for surface paper is polished to exposing metallic luster.Titanium alloy is docked with austenite stainless steel plate level and place or the placement of corner connection ship shape, the plate below thickness 3mm does not stay fit-up gap, and the plate of thickness 3mm～10mm is opened 25 °～35 ° one side V-butts, and root face is for being less than 1mm.
(2) welding parameter of described pulsed tungsten argon arc weld(ing) is: background current 20A～60A, pulse current 28A～80A, pulse duration 5s～10s, pulse frequency 35Hz～75Hz, weldingvoltage 8V～12V, speed of welding 1.0mm/s～3.6mm/s, argon flow amount 10L/min～25L/min, torch neck is from the distance 10mm～14mm of workpiece; Soldered titanium alloy and the thickness of stainless steel work-piece are 2mm～10mm.
Above-mentioned through polishing and assembling after titanium alloy and austenite stainless steel workpiece before welding, should in cabinet-type electric furnace, be preheating to more than 350 DEG C temperature retention time 0.5h～2h.
Described titanium alloy is Ti-6Al-4V alloy; Described austenitic stainless steel by percentage to the quality, Cr 17%～19%, Ni 8%～11%, Si≤1%, Mn≤2%; Described inert gas is argon gas, and its purity is greater than 99.9%.Wherein, the chemical composition of described filler wire is: C 0.06%～0.08%, Cr 18.0%～21.0%, Ni 9.0%～11.0%, Mn 0.5%～2.4%, Si 0.60%～0.80%, Mo 0.50%～0.70%, Cu 0.50%～0.65%, surplus is Fe, by percentage to the quality.Filler wire diameter is 1.5mm～2.0mm, and tungsten electrode diameter is 1.5mm～2.5mm, and tungsten electrode end is taper.
In described welding, environment temperature should be more than or equal to 20 DEG C.
In described step (2), in the welding of described titanium alloy and stainless steel pulsed tungsten argon arc weld(ing), adopt high-frequency impulse striking, before first striking, first open argon gas, keep circulation 20s～30s with deaeration, and utilize argon gas stream to take away to be attached to the moisture on wireway inwall; While receiving arc, in order to make welding smoothly and to eliminate the defects such as arc crater, should control welding current time delay decay gradually, after blow-out, argon gas will continue to circulate 5s～10s, to prevent tungsten electrode oxidation.
In the welding of described titanium alloy and stainless steel pulsed tungsten argon arc weld(ing), the positive and negative at titanium alloy and stainless joint place is all the time in the protection domain in argon gas, prevents that surrounding air from invading.
Described argon flow amount is 12 L/min～18L/min; The joint back side adopts the red copper backing plate with vent cap, passes into argon gas protection simultaneously.
In the welding of described titanium alloy and stainless steel pulsed tungsten argon arc weld(ing), note keeping the distance between welding gun tungsten electrode and weldment, preferably 75 °～85 ° of the angles between tungsten electrode and weldment.
In the welding of described titanium alloy and stainless steel pulsed tungsten argon arc weld(ing), adopt continuous sequence, the one step completed welding manner of whole piece weld seam, to ensure welding quality stable.
After having welded, immediately whole welded part is placed in the cabinet-type electric furnace that temperature remains on 350 DEG C, with stove Slow cooling, to prevent weld crack.
The invention has the beneficial effects as follows, adopt the titanium alloy of the present invention's proposition and the welding method of austenitic stainless steel dissimilar metal, by adjusting welding parameter, control fusing and the curing condition of titanium alloy and stainless steel welding pool, can obtain the welding point of the defects such as appearance of weld is attractive in appearance, flawless, pore-free.This method welding efficiency is high, and cost is low, flexible to operation, can meet the instructions for use of titanium alloy and austenitic stainless steel different-metal material welding joint.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described.
embodiment 1:
The silk filling pulsed tungsten argon arc weld(ing) of Ti-6Al-4V titanium alloy and Cr18-Ni8 austenitic stainless steel.Ti-6Al-4V titanium alloy sheet is of a size of 180mm × 120mm, and thickness is 3mm; Austenitic stainless steel test plate (panel) is of a size of 180mm × 120mm, and thickness is 3mm, two plate butt welding.
The processing step of concrete titanium alloy and austenitic stainless steel pulsed argon arc welding is as follows:
(1) by clean with sand papering the banjo fixing butt jointing place of Ti-6Al-4V titanium alloy and Cr18-Ni8 austenitic stainless steel, make surface to be welded expose metallic luster; Fine grinding wheel polishing one side chamfering for Ti-6Al-4V titanium alloy joint.
(2) stainless steel welding stick that employing diameter is 2.0mm, as filling metal, is polished welding wire surface to exposing metallic luster with sand paper before weldering.The chemical composition (mass fraction) of stainless steel welding stick used is: C 0.06%, and Cr 19.5%, Ni 9.5%, Mn 1.6%, Si 0.60%%, Mo 0.55%, Cu 0.50%, remaining is Fe.
(3) by solid to Ti-6Al-4V titanium alloy sheet and the horizontal docking point of austenite stainless steel plate, do not stay gap.
(4) the solid titanium alloy of point and austenitic stainless steel assembly are placed in the cabinet-type electric furnace of 350 DEG C, after insulation 40min taking-up, are placed in argon filling cover and weld, applying argon gas flow 15L/min.
(5) technological parameter of silk filling pulsed argon arc welding is: background current 40A, pulse current 55A, pulse duration 8s, pulse frequency 45Hz, and weldingvoltage 12V, argon flow amount 12L/min, torch neck is from the distance 12mm of workpiece.
(6) between tungsten electrode and weldment, keep 80 ° of angles.Welding wire is sent into molten bath steadily, uniformly along molten bath front end, welding wire end must not be shifted out to argon shield district.
(7) titanium alloy just having welded and austenitic stainless steel weldment are put into immediately to the cabinet-type electric furnace of 350 DEG C and be incubated slow cooling, take out after cooling to room temperature with the furnace.
Adopt the Ti-6Al-4V titanium alloy of said welding method acquisition and the appearance of weld of austenite stainless steel welding joint good.Do not find the microdefect such as crackle, pore through visual examination of weld and metallography microscope sem observation, meet the instructions for use of connected piece.
embodiment 2:
The silk filling pulsed tungsten argon arc weld(ing) of Ti-6Al-4V titanium alloy and Cr18-Ni8 austenitic stainless steel box-like body angle joint.Ti-6Al-4V titanium alloy sheet is of a size of 140mm × 140mm, and thickness is 4mm; Austenitic stainless steel test plate (panel) is of a size of 140mm × 140mm, and thickness is 4mm, the corner connection in 90 ° of two plates.
The processing step of concrete titanium alloy and austenitic stainless steel pulsed argon arc welding is as follows:
(1) by clean with sand papering the angle joint place of Ti-6Al-4V titanium alloy and Cr18-Ni8 austenitic stainless steel, make surface to be welded expose metallic luster.Titanium alloy and stainless joint place are all by fine grinding wheel polishing 1mm one side chamfering.
(2) stainless steel welding stick that employing diameter is 2.0mm, as filling metal, is polished welding wire surface to exposing metallic luster with sand paper before weldering.The chemical composition (mass fraction) of stainless steel welding stick used is: C 0.06%, and Cr 19.5%, Ni 9.5%, Mn 1.6%, Si 0.60%%, Mo 0.55%, Cu 0.50%, remaining is Fe.
(3) titanium alloy sheet and austenite stainless steel plate are assembled to angle joint at an angle of 90, do not stay gap, point admittedly.
(4) the solid titanium alloy of point and austenitic stainless steel angle joint assembly are placed in the cabinet-type electric furnace of 350 DEG C; after insulation 1h takes out, being down ship shape is placed in argon filling cover; angle joint up; titanium alloy sheet and corrosion resistant plate and horizontal plane angle at 45 °; applying argon gas protection, argon flow amount 18L/min.
(5) weld, the technological parameter of the pulsed tungsten argon arc weld(ing) that fills silk is: background current 45A, pulse current 60A, pulse duration 8s, pulse frequency 45Hz, and weldingvoltage 12V, argon flow amount 14L/min, torch neck is from the distance 10mm of workpiece.
(6) welding wire is sent into molten bath steadily, uniformly along molten bath front end, welding wire end must not be shifted out to argon shield district.
(7) titanium alloy just having welded and austenitic stainless steel corner connector are put into immediately to the cabinet-type electric furnace of 350 DEG C and be incubated slow cooling, weldment takes out after cooling to room temperature with the furnace.
Adopt the Ti-6Al-4V titanium alloy of said welding method acquisition and the appearance of weld of austenitic stainless steel corner joint good.Do not find the microdefect such as crackle, pore through visual examination of weld and metallography microscope sem observation, meet the instructions for use of connected piece.
Claims (1)
1. a welding method for titanium alloy and austenitic stainless steel dissimilar metal, is characterized in that, adopts the pulse inert gas protection weldering that fills silk, and described pulse inert gas protection weldering is specially pulsed tungsten argon arc weld(ing), comprises the steps:
(1) weldering is front by the sand papering cleaning of the joint of titanium alloy and austenitic stainless steel, exposes metallic luster; Filler wire sand for surface paper is polished to exposing metallic luster;
(2) welding parameter of described pulsed tungsten argon arc weld(ing) is: background current 20A～60A, pulse current 28A～80A, pulse duration 5s～10s, pulse frequency 35Hz～75Hz, weldingvoltage 8V～12V, speed of welding 1.0mm/s～3.6mm/s, argon flow amount 10L/min～25L/min;
Described titanium alloy and austenite stainless steel workpiece, before welding, are preheating to more than 350 DEG C in cabinet-type electric furnace, and temperature retention time is 0.5h～2h;
Described titanium alloy is Ti-6Al-4V alloy; Described austenitic stainless steel by percentage to the quality, Cr 17%～19%, Ni 8%～11%, Si≤1%, Mn≤2%; Described inert gas is argon gas, and its purity is greater than 99.9%; Wherein, the chemical composition of described filler wire is: C 0.06%～0.08%, Cr 18.0%～21.0%, Ni 9.0%～11.0%, Mn 0.5%～2.4%, Si 0.60%～0.80%, Mo 0.50%～0.70%, Cu 0.50%～0.65%, surplus is Fe, by percentage to the quality;
Environment temperature when described welding is more than or equal to 20 DEG C;
In described step (2), in the welding of described titanium alloy and stainless steel pulsed tungsten argon arc weld(ing), adopt high-frequency impulse striking, before first striking, first open argon gas, keep circulation 20s～30s with deaeration, and utilize argon gas stream to take away to be attached to the moisture on wireway inwall; While receiving arc, should control welding current time delay decay gradually, after blow-out, argon gas will continue the 5s～10s that circulates;
In the welding of described titanium alloy and stainless steel pulsed tungsten argon arc weld(ing), the positive and negative at titanium alloy and stainless joint place is all the time in the protection domain in argon gas;
The joint back side adopts the red copper backing plate with vent cap, carries out applying argon gas protection simultaneously, and the flow of argon shield is 12L/min～18L/min;
In the welding of described titanium alloy and stainless steel pulsed tungsten argon arc weld(ing), keep the distance between welding gun tungsten electrode and weldment, the angle between tungsten electrode and weldment is 75 °～85 °;
Described welding completes and immediately whole welded part is placed in the cabinet-type electric furnace that temperature remains on 350 DEG C, with stove Slow cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210231712.5A CN102728937B (en) | 2012-07-06 | 2012-07-06 | Dissimilar metal welding method of titanium alloy and austenitic stainless steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210231712.5A CN102728937B (en) | 2012-07-06 | 2012-07-06 | Dissimilar metal welding method of titanium alloy and austenitic stainless steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102728937A CN102728937A (en) | 2012-10-17 |
| CN102728937B true CN102728937B (en) | 2014-12-10 |
Family
ID=46985620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210231712.5A Expired - Fee Related CN102728937B (en) | 2012-07-06 | 2012-07-06 | Dissimilar metal welding method of titanium alloy and austenitic stainless steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102728937B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103464873B (en) * | 2013-09-27 | 2015-06-17 | 山东大学 | Electric-arc welding process for Ti alloy and nickel-base high-temperature alloy |
| CN104741826A (en) * | 2015-03-12 | 2015-07-01 | 西安理工大学 | Cu-Ag-Mo welding wire for titanium-pipeline-steel welding and preparing method thereof |
| CN107552924A (en) * | 2017-09-19 | 2018-01-09 | 江苏大明精密钣金有限公司 | A kind of white brilliant weld seam welding |
| CN108067732A (en) * | 2017-11-16 | 2018-05-25 | 西安建筑科技大学 | A kind of method for inhibiting titanium-steel composite board Butt Joint transition zone crackle |
| CN109014471B (en) * | 2018-07-02 | 2020-11-10 | 上海交通大学 | Consumable electrode inert gas protection arc brazing process for titanium alloy-stainless steel |
| CN109108435A (en) * | 2018-10-15 | 2019-01-01 | 中船澄西船舶修造有限公司 | A kind of stainless steel light wall pipe cold metal transfer welding procedure |
| CN113510405B (en) * | 2021-07-22 | 2023-03-17 | 内蒙古第一机械集团股份有限公司 | Welding wire for welding titanium/steel dissimilar materials and manufacturing process thereof |
| CN115138945A (en) * | 2022-07-12 | 2022-10-04 | 航天科工哈尔滨风华有限公司 | Electric arc additive manufacturing method for enhancing titanium alloy by using stainless steel powder |
| CN115870591B (en) * | 2023-02-20 | 2023-06-23 | 天津市金桥焊材科技有限公司 | MIG welding process method for titanium-steel dissimilar metal and welding wire used by MIG welding process method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101011774A (en) * | 2007-02-06 | 2007-08-08 | 河北省职工焊割技术协会 | Method of welding dissimilar steel 10Cr9Mo1VNb and 1Cr18Ni9 |
| CN101195187A (en) * | 2007-12-20 | 2008-06-11 | 山东大学 | Iron and aluminum intermetallic compound and steel impulse fusion welding method |
| CN101284336A (en) * | 2008-05-30 | 2008-10-15 | 中国航空工业第一集团公司北京航空材料研究院 | Argon-arc welding-braze welding composite welding method for connecting the titanium alloy and steel |
| CN101508053A (en) * | 2009-03-25 | 2009-08-19 | 山东大学 | Welding method of high-nickel alloy and stainless steel dissimilar metal |
| CN101664851A (en) * | 2009-09-29 | 2010-03-10 | 西部金属材料股份有限公司 | Titanium and steel AC helium arc brazing method |
-
2012
- 2012-07-06 CN CN201210231712.5A patent/CN102728937B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101011774A (en) * | 2007-02-06 | 2007-08-08 | 河北省职工焊割技术协会 | Method of welding dissimilar steel 10Cr9Mo1VNb and 1Cr18Ni9 |
| CN101195187A (en) * | 2007-12-20 | 2008-06-11 | 山东大学 | Iron and aluminum intermetallic compound and steel impulse fusion welding method |
| CN101284336A (en) * | 2008-05-30 | 2008-10-15 | 中国航空工业第一集团公司北京航空材料研究院 | Argon-arc welding-braze welding composite welding method for connecting the titanium alloy and steel |
| CN101508053A (en) * | 2009-03-25 | 2009-08-19 | 山东大学 | Welding method of high-nickel alloy and stainless steel dissimilar metal |
| CN101664851A (en) * | 2009-09-29 | 2010-03-10 | 西部金属材料股份有限公司 | Titanium and steel AC helium arc brazing method |
Non-Patent Citations (4)
| Title |
|---|
| 何立.焊接与切割设备的使用和维修(四十八)――TIG焊机的使用与维修.《电焊机》.2005,第35卷(第12期), * |
| 焊接与切割设备的使用和维修(四十八)――TIG焊机的使用与维修;何立;《电焊机》;20051228;第35卷(第12期);第70-72页 * |
| 王廷 等.钛/钢异种金属焊接存在问题及研究现状.《焊接》.2009,(第9期), * |
| 钛/钢异种金属焊接存在问题及研究现状;王廷 等;《焊接》;20090930(第9期);第30页左栏倒数第1段-右栏第2段 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102728937A (en) | 2012-10-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102728937B (en) | Dissimilar metal welding method of titanium alloy and austenitic stainless steel | |
| CN102941397B (en) | Argon tungsten arc welding method for nickel-based alloy | |
| CN102744502B (en) | Wire filling tungsten electrode argon-arc welding process for TA15 titanium alloy and austenitic stainless steel | |
| CN102229018B (en) | Argon arc welding method suitable for self connection of TiAl-based alloy material | |
| CN104858557A (en) | Method for combined welding of austenitic stainless steel moderate thickness plate | |
| CN102114561B (en) | Method of pre-copper-plated induction welding-brazing of aluminum-steel stud bolt | |
| CN103862147B (en) | The silk filling pulsed tungsten argon arc weld(ing) technique of molybdenum-copper and nickel base superalloy | |
| CN102615402A (en) | Tungsten electrode argon arc welding method for filler wires of titanium alloy and aluminum alloy | |
| JP2015535201A (en) | Composite welding wire and manufacturing method thereof | |
| CN102699496A (en) | Welding process method of brass H62 | |
| CN109317794B (en) | Powder-filled plasma welding method for titanium alloy and stainless steel | |
| CN108788385B (en) | Welding method of stainless steel composite plate with Q345R low alloy steel as base layer and 904L stainless steel as multiple layers | |
| CN112296492B (en) | Welding process method of dissimilar metal piece | |
| CN106270876B (en) | A kind of aluminium lithium alloy and titanium alloy electron beam melt pricker welding method | |
| CN111266709A (en) | Welding method for improving ultralow-temperature toughness of 304LN austenitic stainless steel submerged-arc welding joint | |
| CN111283308B (en) | All-position shielded metal arc welding process for ultralow-temperature 304LN austenitic stainless steel medium plate | |
| CN102500906A (en) | Method for welding heterogeneous austenitic stainless steel plates | |
| Yan et al. | Influence of plasma-MIG welding parameters on aluminum weld porosity by orthogonal test | |
| CN103878470B (en) | A kind of titanium alloy and the argon tungsten arc process of nickel alloy foreign material | |
| CN103464873B (en) | Electric-arc welding process for Ti alloy and nickel-base high-temperature alloy | |
| CN113798677A (en) | Welding method of duplex stainless steel and titanium alloy | |
| CN112894087A (en) | Tube plate nickel-based alloy double-tungsten-electrode single-hot-wire automatic tungsten electrode argon arc welding surfacing process | |
| CN110666329A (en) | Method for improving corrosion resistance of welded joint of aluminum plate and steel plate | |
| CN104475960A (en) | Ferronickel-based alloy welding joint heat-affected zone grain boundary liquation crack control method | |
| Meng et al. | Laser cleaning assisted wire arc additive manufacturing of aluminum alloy thin-wall through synchronous wire-powder deposition |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20170706 |