CN101912969B - Preparation method of composite filling layer and method for welding titanium and stainless steel by adopting electronic beam - Google Patents
Preparation method of composite filling layer and method for welding titanium and stainless steel by adopting electronic beam Download PDFInfo
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Abstract
The invention relates to a preparation method of a composite filling layer and a method for welding titanium and stainless steel by adopting an electronic beam, belonging to the field of metal welding and solving the problems of low weld strength and large brittleness easily caused by butt welding brittleness phase generation of the titanium and the stainless steel. The preparation method of the composite filling layer comprises the steps of: loading vanadium powder into a die; loading into the die after the vanadium powder, chromium powder, nickel powder and copper powder are uniformly mixed; cold-moulding; and vacuum-diffusing for continuously treating. In the welding method, the composite filling layer is used as an intermediate layer for electron beam welding. The composite intermediate layer realizes the matching with special materials to be welded from two aspects of physical property and chemical property, realizes the transition of element distribution in a joint, and avoids forming a brittle compound layer. In the welding method, no brittleness phase in the joint can be obtained, and the tensile strength of the joint is above 390MPa. The invention is suitable for manufacturing titanium/steel composite members in an aircraft engine thrust chamber body part, nuke industry nuclear fuel processing equipment and chemical and medical equipment.
Description
Technical field
The invention belongs to xenogenesis welding-resistant metal electron beam connection area, be specifically related to preparation method and the electron beam welding titanium metal material and the stainless method of composite filled layer.
Background technology
The development of aerospace has proposed more high target to the performance of engine of new generation, requires motor power chamber operating pressure and temperature to increase substantially, and also will improve the thrust-weight ratio of engine self simultaneously, further strengthens its quick mobility.Adopt titanium alloy replacement part steel-bodied to be connected and be used for the manufacturing of motor power chamber body portion, can realize local loss of weight 10 ~ 15%, satisfy oxygen kerosene high-thrust rocket of new generation and high-altitude branch and lead the high performance demands of engine with copper alloy.Simultaneously, progressively in Space Dynamic's bearing structure, use titanium alloy to substitute part steel structure body and also become one of important means of the loss of weight of spacecraft weight reducing from now on.In addition, parts, electrode, electrolytic cell, plating, reaction tower, strong acid and strong base container, golf clubs and the Medical Devices etc. in the nuclear fuel equipment for after-treatment in nuclear power unit, satellite propellant spray device and the attitude pushing and controlling system are also often used titanium alloy and stainless composite component.For titanium alloy and stainless welding; Existing technology mainly adopt with titanium alloy dock with stainless steel the back melting be welded; Because joint produces compound between the brittle metal of a large amount of continuous distributed during melting, postwelding very easily ftractures, and is difficult to realize the two connection; Soldering, diffusion welding (DW), friction welding joint then in use receive the restriction of intensity, joint form, service condition and production efficiency, can not satisfy instructions for use.
Summary of the invention
The objective of the invention is to become very easily to cause the problem that the postwelding weld strength is low, fragility is big with stainless steel welding because of the fragility interpromoting relation in five elements in order to solve existing titanium metal material; And preparation method and the electron beam welding titanium metal material and the stainless method of composite filled layer be provided.
The preparation method of composite filled layer is undertaken by following step among the present invention: the thickness of one, in mould, packing into is the vanadium powder of 1 ~ 3mm, and being pressed into thickness then is 0.3 ~ 0.7mm piece; Two, the thickness of in mould, packing into again is 2 ~ 5mm mixed-powder; Mixed-powder is formed by the copper powder mixing of 20% ~ 45% vanadium powder, 3% ~ 7% chromium powder, 2% ~ 5% nickel powder and surplus by weight percentage; The purity of described vanadium powder, chromium powder, nickel powder and copper powder is all more than 99.95%; Vacuum furnace is put in cold moudling then then, is 4 * 10 in vacuum
-3Pa and reaction temperature are to be incubated 2 ~ 6h under 850 ~ 970 ℃ of conditions to carry out vacuum diffusion connection processing; Making thickness is the composite filled layer of 1.0 ~ 1.7mm.
Composite interlayer of the present invention; Realized coupling with foreign material to be welded from physical property and two aspects of chemical property; Realized transition of element distribution in the joint; Obtain good appearance of weld when having avoided brittle compound layer to form, widened technological parameter threshold degree, strengthened the technology accessibility.Adopt described composite interlayer welding titanium metal material of this embodiment and stainless steel, the joint that obtains does not have the fragility phase, more than the tensile strength 390MPa of joint.
Composite filled layer welding titanium metal material (titanium or titanium alloy) and stainless method realize through following step among the present invention: one, the composite filled layer with the said method preparation of claim 1 places between titanium metal material and the stainless steel joint face as the intermediate layer; Make the high side of the content of vanadium of composite filled layer near titanium metal material; Fixed with the solid welding of TIG solder joint; The gap that makes each interface promptly obtains titanium metal material-composite filled layer-stainless weld parts all less than 0.1mm; Two, the weld parts that step 1 is obtained is put into acetone and is carried out ultrasonic waves for cleaning, pickling again; Three, rigidly fix weld parts with anchor clamps then; Place then in the vacuum electron beam welding vacuum chamber; Weld at twice, the electronic beam current application point of twice welding is positioned at composite filled layer, between the electronic beam current application point of first road welding and composite filled layer and the titanium alloy contact-making surface apart from t
1Be 0.2 ~ 0.6mm, the first road welding parameter: speed of welding is that 350 ~ 400mm/min, accelerating potential are that 50 ~ 60kV, focus current are that 2400 ~ 2500mA and electronic beam current are 10mA, and line application point and first road weldering line application point are apart from t during the weldering of second road
2Be 0.5 ~ 1.2mm; The time interval of twice weldering is in 2min; The second road welding parameter: speed of welding is that 350 ~ 400mm/min, accelerating potential are that 50 ~ 60kV, focus current are that 2400 ~ 2500mA and electronic beam current are 10mA, has promptly accomplished titanium metal material and stainless welding.
The inventive method adds the intermediate layer between titanium and stainless steel; Realized coupling with foreign material to be welded from physical property and two aspects of chemical property; Realized transition of element distribution in the joint, avoided brittle compound layer formation, more than the tensile strength 390MPa of joint; This method is applicable to the manufacturing of titanium in aeroengine thrust chamber body portion, nuclear industry nuclear fuel processing equipment, chemical industry and the Medical Devices/steel composite component and titanium alloy/steel composite component.
Description of drawings
Fig. 1 is a cold-press moulding process sketch map; Fig. 2 is an electron beam active position sketch map; Fig. 3 is that the specific embodiment ten methods obtain the figure of nearly titanium side weld district displaing micro tissue topography; Fig. 4 is that the specific embodiment ten methods obtain the figure of nearly steel side weld district displaing micro tissue topography; Wherein 1 representes pressure, 2 expression stampings, 3 expression moulds; The mixed powder of 4 expression chromium powder, nickel powder and copper powders, 5 expression vanadium powders, 6 expressions are welded electron beam 7 expressions for the first time and are welded for the second time electron beam; 8 expression titanium metal materials, the composite filled layer of 9 expressions, 10 expression stainless steels.
The specific embodiment
The specific embodiment one: the preparation method of composite filled layer is undertaken by following step in this embodiment: the thickness of one, in mould, packing into is the vanadium powder of 1 ~ 3mm, and being pressed into thickness then is 0.3 ~ 0.7mm piece; Two, the thickness of in mould, packing into again is 2 ~ 5mm mixed-powder (referring to Fig. 1); Mixed-powder is formed by the copper powder mixing of 20% ~ 45% vanadium powder, 3% ~ 7% chromium powder, 2% ~ 5% nickel powder and surplus by weight percentage; The purity of described vanadium powder, chromium powder, nickel powder and copper powder is all more than 99.95%; Vacuum furnace is put in cold moudling then then, is 4 * 10 in vacuum
-3Pa and reaction temperature are to be incubated 2 ~ 6h under 850 ~ 970 ℃ of conditions to carry out vacuum diffusion connection processing; Making thickness is the composite filled layer of 1.0 ~ 1.7mm.
The described composite interlayer of this embodiment; Realized coupling with foreign material to be welded from physical property and two aspects of chemical property; Realized transition of element distribution in the joint; Obtain good appearance of weld when having avoided brittle compound layer to form, widened technological parameter threshold degree, strengthened the technology accessibility.Adopt described composite interlayer welding titanium metal material of this embodiment and stainless steel, the joint that obtains does not have the fragility phase, more than the tensile strength 390MPa of joint.
The specific embodiment two: what this embodiment and the specific embodiment one were different is: mixed-powder is formed by the copper powder mixing of 30% ~ 40% vanadium powder, 4% ~ 6% chromium powder, 2.5% ~ 4.5% nickel powder and surplus by weight percentage in the step 2.Other step is identical with the specific embodiment one with parameter.
The specific embodiment three: what this embodiment and the specific embodiment one were different is: mixed-powder is formed by the copper powder mixing of 30% ~ 40% vanadium powder, 4% ~ 6% chromium powder, 2.5% ~ 4.5% nickel powder and surplus by weight percentage in the step 2.Other step is identical with the specific embodiment one with parameter.
The specific embodiment four: what this embodiment was different with one of specific embodiment one to three is: the granularity of copper powder described in the step 2 200 ~ 400 orders.Other step is identical with one of specific embodiment one to three with parameter.
The specific embodiment five: what this embodiment was different with one of specific embodiment one to four is: the vanadium powder granularity is 350 ~ 500 orders described in the step 1 and two.Other step is identical with one of specific embodiment one to four with parameter.
The specific embodiment six: what this embodiment was different with one of specific embodiment one to five is: the granularity of chromium powder described in the step 2 350 ~ 500 orders.Other step is identical with one of specific embodiment one to five with parameter.
The specific embodiment seven: what this embodiment was different with one of specific embodiment one to six is: the granularity of nickel powder described in the step 2 350 ~ 500 orders.Other step is identical with one of specific embodiment one to six with parameter.
The specific embodiment eight: this embodiment utilizes the composite filled layer welding titanium metal material and the stainless method of the specific embodiment one said method preparation to realize through following step: one, the composite filled layer with the specific embodiment one said method preparation places between titanium metal material and the stainless steel joint face as the intermediate layer; Make the high side of the content of vanadium of composite filled layer near titanium metal material; Fixed with the solid welding of TIG solder joint; The gap that makes each interface promptly obtains titanium metal material-composite filled layer-stainless weld parts all less than 0.1mm; Two, the weld parts that step 1 is obtained is put into acetone and is carried out ultrasonic waves for cleaning, pickling again; Three, rigidly fix weld parts with anchor clamps then; Place then in the vacuum electron beam welding vacuum chamber; Weld at twice; The electronic beam current application point of twice welding is positioned at composite filled layer (referring to Fig. 2), between the electronic beam current application point of first road welding and composite filled layer and the titanium alloy contact-making surface apart from t
1Be 0.2 ~ 0.6mm, welding parameter for the first time: speed of welding is that 350 ~ 400mm/min, accelerating potential are that 50 ~ 60kV, focus current are that 2400 ~ 2500mA and electronic beam current are 10mA, and the line application point and first road weld the line application point apart from t during the weldering of second road
2Be 0.5 ~ 1.2mm; The time interval of twice weldering is in 2min; Welding parameter for the second time: speed of welding is that 350 ~ 400mm/min, accelerating potential are that 50 ~ 60kV, focus current are that 2400 ~ 2500mA and electronic beam current are 10mA, has promptly accomplished titanium metal material and stainless welding.
The inventive method adds the intermediate layer between titanium and stainless steel; Realized coupling with foreign material to be welded from physical property and two aspects of chemical property; Realized transition of element distribution in the joint, avoided brittle compound layer formation, more than the tensile strength 390MPa of joint; This method is applicable to the manufacturing of titanium in aeroengine thrust chamber body portion, nuclear industry nuclear fuel processing equipment, chemical industry and the Medical Devices/steel composite component and titanium alloy/steel composite component.
The specific embodiment nine: what this embodiment and the specific embodiment eight were different is: the step 2 pickling is that weld parts is put into by HNO
3Clean with distilled water flushing behind 1～4min in the HF mixed solution, HNO wherein
3Concentration is 200g/L, and HF concentration is 30g/L.Other step is identical with the specific embodiment eight with parameter.
The specific embodiment ten: what this embodiment and the specific embodiment nine were different is: distilled water flushing is to utilize the high-velocity flow flushing in the step 2.Other step is identical with the specific embodiment nine with parameter.
The specific embodiment 11: sheet material specification to be welded is 50mm * 25mm * 2.5mm in this embodiment, the thickness 1.7mm of composite filled layer, long 50mm, wide 2.5mm.Stainless steel is the 0Cr18Ni9 austenitic stainless steel, and the titanium alloy trade mark is TA15, and composition is: Ti-6.5Al-2Zr-1Mo-1V.The preparation method of said composite filled layer is undertaken by following step: the vanadium powder of, in mould, packing into, and being pressed into thickness then is the 0.7mm piece; Two, the mixed-powder (referring to Fig. 1) of in mould, packing into again; Mixed-powder is formed by the copper powder mixing of 27% vanadium powder, 5% chromium powder, 3% nickel powder and 65% by weight percentage; The purity of described vanadium powder, chromium powder, nickel powder and copper powder is all more than 99.95%; Vacuum furnace is put in cold moudling then then, is 4 * 10 in vacuum
-3Pa and reaction temperature are that insulation 2h carries out vacuum diffusion connection processing under 930 ℃ of conditions; Making thickness is the composite filled layer of 1.7mm.Be placed in the abutment joint composite filled before the weldering, be rigidly secured in the anchor clamps, fix, make copper transition zone and interface gap less than 0.1mm with TIG spot welding.After point is solid, in acetone, carry out ultrasonic waves for cleaning earlier, carry out pickling more respectively.Acid pickling step is following: in the following aqueous solution, carry out under the room temperature: contain HNO in the 1L water
3200g, HF 30g.Pickling time 1-4min adopts high-velocity flow to wash then.Be fixed on after to be dried in the anchor clamps of band grooving, place in the vacuum electron beam welder vacuum chamber, treat that vacuum degree in vacuum chamber reaches 4.5 * 10
-5Pa promptly welds.The line application point was positioned on the vanadium layer when first road welded, and apart from packed layer/titanium alloy contact-making surface 0.35mm.Application point was positioned on the vanadium copper alloy layer when second road welded, the welding line application point 1.0mm apart from first road.Twice weldering time interval 1.5min.Welding parameter is: first road weldering accelerating potential 55kV, focus current 2450mA, line 10mA, speed of welding 360mm/min.Second road weldering accelerating potential 55kV, focus current 2450mA, line 10mA, speed of welding 360mm/min.Shown in Figure 3 is titanium side weld district displaing micro tissue topography; Be made up of titanium vanadium solid solution and copper based solid solution, Fig. 4 is a stainless steel side weld district pattern, is made up of copper and iron-based solid solution in the zone near the steel mother metal; It is thus clear that; Generate through no frangible compounds in this process connection, joint tensile strength is 392MPa, reaches stainless 71%.
The specific embodiment 12: sheet material specification to be welded is 50mm * 25mm * 5mm in this embodiment, composite filled layer thickness 1.7mm, long 50mm, wide 5mm.The preparation method of said composite filled layer is undertaken by following step: the vanadium powder of, in mould, packing into, and being pressed into thickness then is the 0.9mm piece; Two, the mixed-powder (referring to Fig. 1) of in mould, packing into again; Mixed-powder is formed by the copper powder mixing of 40% vanadium powder, 5% chromium powder, 3% nickel powder and 52% by weight percentage; The purity of described vanadium powder, chromium powder, nickel powder and copper powder is all more than 99.95%; Vacuum furnace is put in cold moudling then then, is 4 * 10 in vacuum
-3Pa and reaction temperature are that insulation 4h carries out vacuum diffusion connection processing under 960 ℃ of conditions; Making thickness is the composite filled layer of 1.7mm.The titanium alloy trade mark is TA15, and composition is: Ti-6.5Al-2Zr-1Mo-1V, stainless steel are the 0Cr18Ni9 austenitic stainless steel.Before the weldering packed layer is placed abutment joint, be rigidly secured in the anchor clamps, fix, make copper transition zone and interface gap less than 0.1mm with TIG spot welding.After point is solid, in acetone, carry out ultrasonic waves for cleaning earlier, carry out pickling more respectively.Acid pickling step is following: in the following aqueous solution, carry out under the room temperature: contain HNO in the 1L water
3200g, HF 30g.Pickling time 1 ~ 4min adopts high-velocity flow to wash then.Be fixed on after to be dried in the anchor clamps of band grooving, place in the vacuum electron beam welder vacuum chamber, treat that vacuum degree in vacuum chamber reaches 4.5 * 10
-5Pa promptly welds.The line application point was positioned on the vanadium layer when first road welded, and apart from packed layer/titanium alloy contact-making surface 0.45mm.Application point was positioned on the vanadium copper alloy layer when second road welded, the welding line application point 0.8mm apart from first road.Twice weldering time interval 1min.Welding parameter is: first road weldering accelerating potential 55kV, focus current 2450mA, line 20mA, speed of welding 360mm/min.Second road weldering accelerating potential 55kV, focus current 2450mA, line 20mA, speed of welding 360mm/min.Joint tensile strength is 400MPa, reaches stainless 73%.
The specific embodiment 13: sheet material specification to be welded is 50mm * 25mm * 2.5mm in this embodiment, packed layer thickness 1.7mm, long 50mm, wide 2.5mm.The preparation method of said composite filled layer is undertaken by following step: the vanadium powder of, in mould, packing into, and being pressed into thickness then is the 0.7mm piece; Two, the mixed-powder (referring to Fig. 1) of in mould, packing into again; Mixed-powder is formed by the copper powder mixing of 27% vanadium powder, 5% chromium powder, 3% nickel powder and 65% by weight percentage; The purity of described vanadium powder, chromium powder, nickel powder and copper powder is all more than 99.95%; Vacuum furnace is put in cold moudling then then, is 4 * 10 in vacuum
-3Pa and reaction temperature are that insulation 2h carries out vacuum diffusion connection processing under 930 ℃ of conditions; Making thickness is the composite filled layer of 1.7mm.The titanium alloy trade mark is TB5, and composition is: Ti-15V-3Cr-3Al, stainless steel are the 0Cr18Ni9 austenitic stainless steel.Before the weldering packed layer is placed abutment joint, be rigidly secured in the anchor clamps, fix, make copper transition zone and interface gap less than 0.1mm with TIG spot welding.After point is solid, in acetone, carry out ultrasonic waves for cleaning earlier, carry out pickling more respectively.Acid pickling step is following: in the following aqueous solution, carry out under the room temperature: contain HNO in the 1L water
3200g, HF 30g.Pickling time 1 ~ 4min adopts high-velocity flow to wash then.Be fixed on after to be dried in the anchor clamps of band grooving, place in the vacuum electron beam welder vacuum chamber, treat that vacuum degree in vacuum chamber reaches 4.5 * 10
-5Pa promptly welds.The line application point was positioned on the vanadium layer when first road welded, and apart from packed layer/titanium alloy contact-making surface 0.35mm.Application point was positioned on the vanadium copper alloy layer when second road welded, the welding line application point 1.0mm apart from first road.Twice weldering time interval 1.5min.Welding parameter is: first road weldering accelerating potential 55kV, focus current 2450mA, line 10mA, speed of welding 360mm/min.Second road weldering accelerating potential 55kV, focus current 2450mA, line 10mA, speed of welding 360mm/min.Joint tensile strength is 410MPa, reaches stainless 75%.
The specific embodiment 14: sheet material specification to be welded is 50mm * 25mm * 5mm in this embodiment, packed layer thickness 1.7mm, long 50mm, wide 2.5mm.The preparation method of said composite filled layer is undertaken by following step: the vanadium powder of, in mould, packing into, and being pressed into thickness then is the 0.7mm piece; Two, the mixed-powder (referring to Fig. 1) of in mould, packing into again; Mixed-powder is formed by the copper powder mixing of 40% vanadium powder, 5% chromium powder, 3% nickel powder and 52% by weight percentage; The purity of described vanadium powder, chromium powder, nickel powder and copper powder is all more than 99.95%; Vacuum furnace is put in cold moudling then then, is 4 * 10 in vacuum
-3Pa and reaction temperature are that insulation 4h carries out vacuum diffusion connection processing under 960 ℃ of conditions; Making thickness is the composite filled layer of 1.7mm.The titanium alloy trade mark is TB5, and composition is: Ti-15V-3Cr-3Al, stainless steel are the 0Cr18Ni9 austenitic stainless steel.Before the weldering packed layer is placed abutment joint, be rigidly secured in the anchor clamps, fix, make copper transition zone and interface gap less than 0.1mm with TIG spot welding.After point is solid, in acetone, carry out ultrasonic waves for cleaning earlier, carry out pickling more respectively.Acid pickling step is following: in the following aqueous solution, carry out under the room temperature: contain HNO in the 1L water
3200g, HF 30g.Pickling time 1-4min adopts high-velocity flow to wash then.Be fixed on after to be dried in the anchor clamps of band grooving, place in the vacuum electron beam welder vacuum chamber, treat that vacuum degree in vacuum chamber reaches 4.5 * 10
-5Pa promptly welds.The line application point was positioned on the vanadium layer when first road welded, and apart from packed layer/titanium alloy contact-making surface 0.35mm.Application point was positioned on the vanadium copper alloy layer when second road welded, the welding line application point 1.0mm apart from first road.Twice weldering time interval 1.5min.Welding parameter is: first road weldering accelerating potential 55kV, focus current 2450mA, line 18mA, speed of welding 360mm/min.Second road weldering accelerating potential 55kV, focus current 2450mA, line 18mA, speed of welding 360mm/min.Joint tensile strength is 399MPa, reaches stainless 72%.
Claims (9)
1. the preparation method of composite filled layer, it is characterized in that the preparation method of composite filled layer is undertaken by following step: the thickness of one, in mould, packing into is the vanadium powder of 1～3mm, and being pressed into thickness then is 0.3～0.7mm piece; Two, the thickness of in mould, packing into again is 2～5mm mixed-powder; Mixed-powder is formed by the copper powder mixing of 20%～45% vanadium powder, 3%～7% chromium powder, 2%～5% nickel powder and surplus by weight percentage; The purity of described vanadium powder, chromium powder, nickel powder and copper powder is all more than 99.95%; Vacuum furnace is put in cold moudling then then, is 4 * 10 in vacuum
-3Pa and reaction temperature are to be incubated 2～6h under 850～970 ℃ of conditions to carry out vacuum diffusion connection processing; Making thickness is the composite filled layer of 1.0～1.7mm.
2. according to the preparation method of the said composite filled layer of claim 1, it is characterized in that the mixed-powder described in the step 2 is formed by the copper powder mixing of 30%～40% vanadium powder, 4%～6% chromium powder, 2.5%～4.5% nickel powder and surplus by weight percentage.
3. according to the preparation method of claim 1 or 2 said composite filled layers, it is characterized in that the granularity of copper powder described in the step 2 200～400 orders.
4. according to the preparation method of the said composite filled layer of claim 3, it is characterized in that the vanadium powder granularity is 350～500 orders described in step 1 and two.
5. according to the preparation method of claim 1,2 or 4 said composite filled layers, it is characterized in that the granularity of chromium powder described in the step 2 350～500 orders.
6. according to the preparation method of the said composite filled layer of claim 5, it is characterized in that the granularity of nickel powder described in the step 2 350～500 orders.
7. utilize the composite filled layer electron beam welding titanium metal material and the stainless method of the said method preparation of claim 1; It is characterized in that electron beam welding titanium metal material and stainless method realize through following step: one, the composite filled layer with the said method preparation of claim 1 places between titanium metal material and the stainless steel joint face as the intermediate layer; Make the high side of the content of vanadium of composite filled layer near titanium metal material; Fixed with the solid welding of TIG solder joint; The gap that makes each interface promptly obtains titanium metal material-composite filled layer-stainless weld parts all less than 0.1mm; Two, the weld parts that step 1 is obtained is put into acetone and is carried out ultrasonic waves for cleaning, pickling again; Three, rigidly fix weld parts with anchor clamps then; Place then in the vacuum electron beam welding vacuum chamber; The branch twice are welded, and the electronic beam current application point of twice welding is positioned at composite filled layer, between the electronic beam current application point of first road welding and composite filled layer and the titanium alloy contact-making surface apart from t
1Be 0.2～0.6mm, the first road welding parameter: speed of welding is that 350～400mm/min, accelerating potential are that 50～60kV, focus current are that 2400～2500mA and electronic beam current are 10mA, and line application point and first road weldering line application point are apart from t during the weldering of second road
2Be 0.5～1.2mm; The time interval of twice weldering is in 2min; The second road welding parameter: speed of welding is that 350～400mm/min, accelerating potential are that 50～60kV, focus current are that 2400～2500mA and electronic beam current are 10mA, has promptly accomplished titanium metal material and stainless welding.
8. according to said composite filled layer electron beam welding titanium metal material of claim 7 and stainless method, it is characterized in that the step 2 pickling is that weld parts is put into by HNO
3Clean with distilled water flushing behind 1～4min in the HF mixed solution, HNO wherein
3Concentration is 200g/L, and HF concentration is 30g/L.
9. said according to Claim 8 composite filled layer electron beam welding titanium metal material and stainless method is characterized in that the step 2 distilled water flushing is to utilize the high-velocity flow flushing.
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| CN102407408A (en) * | 2011-09-23 | 2012-04-11 | 南京工业大学 | Welding joint suitable for welding dissimilar metal materials and preparation method thereof |
| CN103192195B (en) * | 2013-04-25 | 2015-11-11 | 哈尔滨工业大学（威海） | Titanium alloy and stainless steel electronic beam welding connect packing material, preparation technology and method thereof |
| CN107398654A (en) * | 2017-08-31 | 2017-11-28 | 哈尔滨工业大学（威海） | The electron beam welding special filling material of titanium alloy and nickel base superalloy |
| CN109318549B (en) * | 2018-08-02 | 2020-08-07 | 兰州理工大学 | Titanium-steel resistance brazing composite metal sheet and preparation method thereof |
| CN109604800A (en) * | 2018-12-22 | 2019-04-12 | 山西汾西重工有限责任公司 | The three step welding method of aluminium alloy thick plate vacuum electron beam of gas hole defect can be overcome |
| CN110497160A (en) * | 2019-09-06 | 2019-11-26 | 鞍钢股份有限公司 | A kind of titanium steel composite board vacuum electron beam slot pulling assembly sealing method |
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