CN104526142A - Flash welding forming method of [alpha]-[beta] two-phase titanium alloy large-section ring piece - Google Patents
Flash welding forming method of [alpha]-[beta] two-phase titanium alloy large-section ring piece Download PDFInfo
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- CN104526142A CN104526142A CN201410775522.9A CN201410775522A CN104526142A CN 104526142 A CN104526142 A CN 104526142A CN 201410775522 A CN201410775522 A CN 201410775522A CN 104526142 A CN104526142 A CN 104526142A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/04—Flash butt welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/16—Resistance welding; Severing by resistance heating taking account of the properties of the material to be welded
- B23K11/18—Resistance welding; Severing by resistance heating taking account of the properties of the material to be welded of non-ferrous metals
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/14—Titanium or alloys thereof
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Abstract
The invention discloses a flash welding forming method of an [alpha]-[beta] two-phase titanium alloy large-section ring piece. The method comprises the steps of fixing an [alpha]-[beta] two-phase titanium alloy large-section ring blank with an opening on a clamp, powering on to make current arrive at the right end from the left end of the ring blank through the back of the ring blank to form loop current for preheating; driving the right end to be close to the left end of the ring blank for weak flashing; improving the feeding speed, and adjusting current for strong flashing to form a temperature field; calculating the lengths of a high temperature mushy zone and a high temperature texture zone according to a temperature field, so as to determine an temperature field distance for temperature field; carrying out pressure maintaining for a period of time. According to the method, the stable and reasonable temperature field can be formed, and all metals in the high temperature mushy zone can be ensured to be ejected out a matrix in the upsetting process, the metals in the high temperature texture zone can be sufficiently and plastically deformed, and the flash welding ring piece with high quality can be obtained by recovering, recycling and refining crystals. The method can be used for the flash welding forming of the ring pieces with larger areas.
Description
Technical field
The present invention relates to a kind of welding method, particularly relate to the flash welding manufacturing process of alpha-beta diphasic titanium alloy heavy in section ring.
Background technology
Flash welding is a kind of solid State Welding, forms certain temperature field, then welded by workpiece by the effect of upset force by flash of light in two welding end surface of workpiece.Therefore, temperature field and the reasonable coordination of upset parameter realize the key that high-quality welds, suitable temperature field can provide suitable diffusion activation energy for metallic atom, accelerate the phase counterdiffusion of two ends atom in forge process, meet the demand of compressing process metal plastic deformation, and the foundation in temperature field determined primarily of flash stage simultaneously.By the temperature field that flash of light process is formed, be mainly divided into two parts: high temperature mushy zone and high temperature microstructure alligatoring district.In compressing process, the metal of high temperature mushy zone is ejected matrix; There is plastic deformation in the metal in high temperature microstructure alligatoring district, form the tissue that crystal grain is evenly tiny under the effect of upset force.
For alpha-beta diphasic titanium alloy material, because its heat conductivity is poor, if do not have time enough to make the heat that flash of light process end face produces internally transmit, be actually and be difficult to set up suitable temperature field.Especially the flash welding for alpha-beta diphasic titanium alloy heavy in section ring is shaped, and normal, the sectional area of the welding end surface of workpiece is larger, and the power provided required for flash butt welder is also larger.But when glistening, the welding end surface spot temperature of workpiece is the highest, is the position be consumed at first, this part metal can be gone out along with flash of light is injected, takes away a large amount of heats.So when power is larger, flash of light Shaoxing opera is strong, at this moment glistening, scaling loss speed is high, heat transfer rate is little, the thermograde that workpiece is formed is large, during upset, plastically deformable region is less, thus causes occurring rosin joint phenomenon (namely " welding unreal "), and workpiece interface area is larger, this phenomenon is more obvious.Therefore, alpha-beta diphasic titanium alloy heavy in section ring is generally needed to adopt reduction flash intensity, extend flash time to set up suitable temperature field.But flash intensity is too little, the oversize meeting of flash time causes that the temperature field set up is too mild, heat affected area is wider, namely high temperature mushy zone and high temperature microstructure alligatoring district wider.When upset, because its upset stroke is fixing, the metal of these high temperature mushy zone all can not be ejected matrix in limited upset stroke, under thermal stress in the cooling procedure of the high temperature paste-like metallic that these are not ejected after having welded and the bulging power effect in the shape process of follow-up school, easily form crackle.The metal in high temperature microstructure alligatoring district also can because of can not get enough distortion, can not recrystallization fully, and cause grain size defective, and workpiece is scrapped.
Chinese invention patent description CN 102500899 A disclosed in 20 days June in 2012 discloses a kind of method using preheating flash butt welding to produce bloster, the method comprises clamping workpiece, pre-flash, preheating, flash of light, upset, the steps such as heating pressurize and dismounting workpiece, after specifically clamping workpiece is good, switch on power and carry out pre-flash, after flashing allowance reaches preset value, with the preheat pulse of setting, preheating is carried out to workpiece again, and then stage by stage it is glistened, the flashing speed in each stage and flashing allowance are fixing, afterwards, upset immediately, and pressurize is carried out and electrified regulation to the pressure that workpiece applies to set, after a period of time, take out workpiece.Although the flash welding that the method can realize bloster is shaped, be also only limitted to the flash welding of the common materials such as Q345, for the material that this kind of heat transfer rate of alpha-beta diphasic titanium alloy is slower, be not easy to form suitable temperature field, institute in this way and inapplicable.
In April, 2000 has issued the paper of " the great section workpiece preheating flash butt welding technical study " by name that a section is write by people such as Huang Huagang in the 30th volume the 4th phase of Chinese Magazines " electric welding machine ", the publication presents a kind of technique of great section workpiece preheating flash butt welding, workpiece is after dodging gentle preheating procedure, temperature field is set up vertically at workpiece end face, by continuing input heat in flash of light process, adjustment temperature field.Although this method can formation temperature field, but concrete technological parameter is not disclosed, and the method employing is set up temperature field by preheating intermittently, flash of light process adjusts temperature field, therefore this process is discontinuous, the temperature field formed is unstable, can affect by welding quality.
Summary of the invention
The technical problem to be solved in the present invention is to provide one in continuous print flash of light process, sets up stable, a rational temperature field, ensure that the metal of high temperature mushy zone in compressing process all can be ejected matrix, sufficient plastic deformation can be there is in the metal in high temperature microstructure alligatoring district, by recovery and recrystallization crystal grain thinning, thus the flash welding realizing alpha-beta diphasic titanium alloy heavy in section ring is shaped, the method can improve welding quality.
For solving the problems of the technologies described above, the flash welding manufacturing process of alpha-beta diphasic titanium alloy heavy in section of the present invention ring, its technical scheme comprises the following steps:
Be fixed on left fixture by the left end of the alpha-beta diphasic titanium alloy heavy in section ring base of band opening, right-hand member is fixed on right fixture; The operating power of setting flash welder is P=380KVA ~ 950KVA, electric current I
0=45KA ~ 55KA, switch on power, at this moment there is larger distance in both ends open place, electric current can reach the right-hand member formation circulation of ring base through the back of ring base from the left end of ring base, ring base has resistance, and electric current, through ring base, heats ring base, after a period of time, left end and the right-hand member of ring base are all heated to T
0=250 ~ 300 DEG C, be conducive to formation temperature field in follow-up flash of light process;
Adjustment electric current is I=20KA ~ 30KA, enables flash of light process remain on low-intensity and continues to carry out, now, and the flash of light scaling loss speed v of ring base
0=0.62mm/s ~ 0.96mm/s, right fixture is driven to make the right-hand member of ring base with the flash of light scaling loss speed v with ring base
0equal feed speed v is close to left end, work as a left side, during distance≤the 10.00mm at right two ends, electric current reaches right-hand member from left end through opening part, now, a large amount of heats can be produced at opening part, fusing is left, right both ends of the surface metal, form liquid lintel and outwards spray at a high speed after there is explosion and form flash of light, because the flash of light scaling loss speed of ring base is lower, be less than heat transmission speed, the heat that flash of light produces can fully along ring base transfers to far-end, and right-hand member is equal with the flash of light scaling loss speed of ring base to the feed speed of left end, so two ends remain at≤distance of 10.00mm is constant, flash of light process lasts t=4s ~ 6s,
Instantaneous feed speed is risen to 6.20mm/s ~ 9.60mm/s, electric current is adjusted to I simultaneously
1=60KA ~ 75KA; now; the flash of light scaling loss speed of ring base is 1.74mm/s ~ 2.11mm/s; make opening part that violent flash of light occur; produce a large amount of metallic vapours, for forming protective layer during follow-up upset, this process reaction is violent; reaction time is shorter, and it is d that left and right two ends high-temperature part has been burnt a segment length
0the metal material of=2.26mm ~ 4.64mm, and the heat that flash of light produces has little time distally to transmit, and finally form the temperature field needed for upset, left and right two ends temperature is higher than T
1the alpha-beta diphasic titanium alloy of=1240 DEG C of parts is high temperature pasty state, and left and right two ends temperature is at T
2=900 DEG C ~ T
1time between=1240 DEG C, alpha-beta diphasic titanium alloy is high temperature microstructure alligatoring shape, and flash of light process completes;
The length that can calculate high temperature mushy zone according to the temperature field of flash of light process formation is d
1=6.00mm ~ 8.00mm, the length in high temperature microstructure alligatoring district is d
2=10.00mm ~ 12.00mm, upset distance when therefore can set upset is D=8.00mm ~ 14.00mm; In the moment that flash of light process completes, upset is carried out with the left and right two ends of the upset force of 25KN ~ 50KN to ring base, the complete upset of metal of the high temperature mushy zone at the left and right two ends of ring base is gone out, and enables the metal in high temperature microstructure alligatoring district that the distortion of 20% ~ 50% occur;
Described heavy in section ring takes apart from welding machine after pressurize 15s ~ 25s under the effect of upset force.
The mathematic(al) representation in the temperature field that described flash of light process is formed is:
Wherein, T (x) is the temperature at distance end face x place; η is the heat ratio lost because of flash of light; Operating power when P is flash of light; Operating current when I is flash of light; ρ
tfor electrical conductivity; L is the girth of ring; S is the cross-sectional area of ring; d
0for scaling loss length during intense flash; Flash of light scaling loss speed when v is weak flash of light; T is the time of weak flash of light; λ is thermal conductivity; T
0for preheat temperature; C is thermal capacitance; ρ is density of material.
The computing formula of described upset distance is as follows:
D＝d
1+(0.2～0.5)d
2
In formula:
D
1for the length of high temperature mushy zone;
D
2the length in high temperature microstructure alligatoring district.
Described alpha-beta diphasic titanium alloy is preferably Ti6242 alloy.
Compared with prior art, beneficial effect of the present invention is as follows:
The flash welding manufacturing process of alpha-beta diphasic titanium alloy heavy in section of the present invention ring, by before flash of light, electric current is made to reach the right-hand member formation circulation of ring base through the back of ring base from the left end of ring base, preheating is carried out to the left and right two ends of ring base, this warm is stablized, and can ensure that follow-up flash of light process forms stable, rational temperature field.
Through first weak flash of light, then the flash model of intense flash, when weak flash of light, heat transmission speed is greater than the flash of light scaling loss speed of alpha-beta diphasic titanium alloy, and heat along the transfers of ring base to far-end, can ensure formation temperature field.In this temperature field, when temperature is greater than T
1when=1240 DEG C, alpha-beta diphasic titanium alloy is high temperature pasty state, this Temperature numerical is substituted into the mathematic(al) representation in temperature field, can calculate x
1numerical value, and show that the length of high temperature mushy zone is d
1=6.00mm ~ 8.00mm; When temperature is at T
2=900 DEG C ~ T
1time between=1240 DEG C, alpha-beta diphasic titanium alloy is high temperature microstructure alligatoring shape, and this Temperature numerical substitutes into the mathematic(al) representation in temperature field, can calculate x
2numerical value, and show that the length in high temperature microstructure alligatoring district is d
2=10.00mm ~ 12.00mm; Again according to formula D=d
1+ (0.2 ~ 0.5) d
2, finally can determine that the distance of upset is D=8.00mm ~ 14.00mm; This upset distance can ensure that the complete upset of metal of the high temperature mushy zone at the left and right two ends of ring base is gone out, and enable the metal in high temperature microstructure alligatoring district that the distortion of 20% ~ 50% occur, enable high temperature microstructure alligatoring district recovery and recrystallization fully, obtain and organize excellent welding junction, ensure the flash welding quality of alpha-beta diphasic titanium alloy heavy in section ring.
Take the trade mark as the alpha-beta diphasic titanium alloy heavy in section ring of Ti6242 be example, after heat treatment detect the room temperature tensile properties of this ring welding position, alloy heavy in section, its tensile strength is 845MPa (being greater than the 806.4MPa of design instructions for use), and elongation after fracture was 6% (being greater than 5% of design instructions for use).
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Fig. 1 is ring base preheating schematic diagram.
Fig. 2 is the flash stage schematic diagram of ring base.
Fig. 3 is the temperature field schematic diagram at the end of flash of light process.
Detailed description of the invention
The flash welding manufacturing process implementing alpha-beta diphasic titanium alloy heavy in section of the present invention ring needs to provide the equipment such as flash butt welder, manipulator.The alpha-beta diphasic titanium alloy being Ti6242 for the U.S. material trade mark below describes the detailed description of the invention of the method in detail:
The main chemical elements content (percentage by weight) of this alloy is: containing Al amount 6.10%, containing Zr amount 3.92%, containing Mo amount 1.97%, containing Sn amount 1.95%, si content 0.07%, containing Fe amount 0.04%, C content 0.01%, leaded wastewater 0.01%, containing H amount 0.004%, containing O amount 0.11%, surplus is Ti.
The flash welding shaping process step of this alloy heavy in section ring is as follows:
Step 1: preheating.Be fixed on left fixture 111 by the left end 121 of the alpha-beta diphasic titanium alloy heavy in section ring base 100 of band opening, right-hand member 122 is fixed on right fixture 112; The operating power of setting flash welder is P=380KVA ~ 950KVA, electric current I
0=45KA ~ 55KA, switch on power, the distance of at this moment both ends open place existence is larger, the right-hand member 122 that electric current can reach ring base 100 from the left end 121 of ring base 100 through the back 101 of ring base 100 forms circulation, as shown in Figure 1, owing to there is resistance in ring base 100, ring base 100 can be made to generate heat, after a period of time, left end 121 and the right-hand member 122 of ring base 100 are all heated to T
0=250 ~ 300 DEG C, be conducive to formation temperature field in follow-up flash of light process.
Step 2: weak flash of light.Adjustment electric current is I=20KA ~ 30KA, enables flash of light process remain on low-intensity and continues to carry out, now, and the flash of light scaling loss speed v of ring base 100
0=0.62mm/s ~ 0.96mm/s, right fixture 112 is driven to make the right-hand member 122 of ring base 100 with the flash of light scaling loss speed v with ring base 100
0equal feed speed v is close to left end 121, work as a left side, during distance≤the 10.00mm at right two ends, as shown in Figure 2, electric current reaches right-hand member 122 from left end 121 through opening 120, now, a large amount of heats can be produced at opening part, fusing is left, right both ends of the surface metal, form liquid lintel and outwards spray at a high speed after there is explosion and form flash of light, because the flash of light scaling loss speed of ring base 100 is lower, be less than heat transmission speed, the heat that flash of light produces can fully along ring base 100 transfers to far-end, and right-hand member 122 is equal with the flash of light scaling loss speed of ring base 100 to the feed speed of left end 121, so two ends remain at≤distance of 10.00mm is constant, flash of light process lasts t=4s ~ 6s.
Step 3: intense flash.Instantaneous feed speed is risen to 6.20mm/s ~ 9.60mm/s, electric current is adjusted to I simultaneously
1=60KA ~ 75KA; now; the flash of light scaling loss speed of ring base 100 is 1.74mm/s ~ 2.11mm/s; make opening 120 place that violent flash of light occur; produce a large amount of metallic vapours, for forming protective layer during follow-up upset, this process reaction is violent; reaction time is shorter, and it is d that left and right two ends high-temperature part has been burnt a segment length
0the metal material of=2.26mm ~ 4.64mm, and the heat that flash of light produces has little time distally to transmit, and finally form the temperature field needed for upset, as shown in Figure 3, when temperature is higher than T
1when=1240 DEG C, Ti6242 alloy is high temperature pasty state, when temperature is at T
2=900 DEG C ~ T
1time between=1240 DEG C, Ti6242 alloy is high temperature microstructure alligatoring shape, i.e. 0 ~ x
1between be high temperature mushy zone, x
1~ x
2for high temperature microstructure alligatoring district, flash of light process completes.
Step 4: upset.Mathematic(al) representation according to the temperature field of flash of light process formation is:
Wherein, T (x) is the temperature at distance end face x place; η is the heat ratio lost because of flash of light; Operating power when P is flash of light; Operating current when I is flash of light; ρ
tfor electrical conductivity; L is the girth of ring; S is the cross-sectional area of ring; d
0for scaling loss length during intense flash; Flash of light scaling loss speed when v is weak flash of light; T is the time of weak flash of light; λ is thermal conductivity; T
0for preheat temperature; C is thermal capacitance; ρ is density of material.
When temperature is greater than T
1when=1240 DEG C, Ti6242 alloy is high temperature pasty state, this temperature is substituted into the mathematic(al) representation in temperature field, can calculate x
1numerical value, and show that the length of high temperature mushy zone is d
1=6.00mm ~ 8.00mm, when temperature is at T
2=900 DEG C ~ T
1time between=1240 DEG C, Ti6242 alloy is high temperature microstructure alligatoring shape, this temperature is substituted into the mathematic(al) representation in temperature field, can calculate x
2numerical value, and show that the length in high temperature microstructure alligatoring district is d
2=10.00mm ~ 12.00mm; Again according to formula D=d
1+ (0.2 ~ 0.5) d
2, upset distance during upset can be set as D=8.00mm ~ 14.00mm; In the moment that flash of light process completes, upset is carried out with the left and right two ends of the upset force of 25KN ~ 50KN to ring base 100, the complete upset of metal of the high temperature mushy zone at left and right two ends is gone out, and enables the metal in high temperature microstructure alligatoring district that the distortion of 20% ~ 50% occur.
Step 5: pressurize.The heavy in section ring of welding forming is kept 15s ~ 25s under the effect of upset force, just can take apart from flash butt welder after weld seam fully combines.
Adopt the Ti6242 alloy heavy in section ring of said method welding forming, its axial cross section areal extent is 4500mm
2above.
Claims (4)
1. a flash welding manufacturing process for alpha-beta diphasic titanium alloy heavy in section ring, is characterized in that, comprise the following steps:
Be fixed on left fixture by the left end of the alpha-beta diphasic titanium alloy heavy in section ring base of band opening, right-hand member is fixed on right fixture; The operating power of setting flash welder is P=380KVA ~ 950KVA, electric current I
0=45KA ~ 55KA, switches on power, and electric current can reach the right-hand member formation circulation of ring base through the back of ring base from the left end of ring base, heat ring base, after a period of time, left end and the right-hand member of ring base are all heated to T
0=250 ~ 300 DEG C;
Adjustment electric current is I=20KA ~ 30KA, enables flash of light process remain on low-intensity and continues to carry out, now, and the flash of light scaling loss speed v of ring base
0=0.62mm/s ~ 0.96mm/s, right fixture is driven to make the right-hand member of ring base with the flash of light scaling loss speed v with ring base
0equal feed speed v is close to left end, work as a left side, during distance≤the 10.00mm at right two ends, electric current reaches right-hand member from left end through opening part, and a large amount of heats can be produced at opening part, fusing is left, right both ends of the surface metal, form liquid lintel and outwards spray at a high speed after there is explosion and form flash of light, now, the flash of light scaling loss speed of ring base is lower, be less than heat transmission speed, the heat that flash of light produces can fully along ring base transfers to far-end, and right-hand member is equal with the flash of light scaling loss speed of ring base to the feed speed of left end, make two ends remain at≤distance of 10.00mm is constant, flash of light process lasts t=4s ~ 6s,
Instantaneous feed speed is risen to 6.20mm/s ~ 9.60mm/s, electric current is adjusted to I simultaneously
1=60KA ~ 75KA; now; the flash of light scaling loss speed of ring base is 1.74mm/s ~ 2.11mm/s; make opening part that violent flash of light occur; produce a large amount of metallic vapours, for forming protective layer during follow-up upset, this process reaction is violent; reaction time is shorter, and it is d that left and right two ends high-temperature part has been burnt a segment length
0the metal material of=2.26mm ~ 4.64mm, and the heat that flash of light produces has little time distally to transmit, and the temperature field finally formed needed for upset, left and right two ends temperature is high temperature pasty state higher than the alpha-beta diphasic titanium alloy of 1240 DEG C of parts, when left and right two ends temperature is between 900 DEG C ~ 1240 DEG C, alpha-beta diphasic titanium alloy is high temperature microstructure alligatoring shape, and flash of light process completes;
The length that can calculate high temperature mushy zone according to the temperature field of flash of light process formation is d
1=6.00mm ~ 8.00mm, the length in high temperature microstructure alligatoring district is d
2=10.00mm ~ 12.00mm, upset distance when therefore can set upset is D=8.00mm ~ 14.00mm; In the moment that flash of light process completes, upset is carried out with the left and right two ends of the upset force of 25KN ~ 50KN to ring base, the complete upset of metal of the high temperature mushy zone at the left and right two ends of ring base is gone out, and enables the metal in high temperature microstructure alligatoring district that the distortion of 20% ~ 50% occur;
Described heavy in section ring takes apart from welding machine after pressurize 15s ~ 25s under the effect of upset force.
2. the flash welding manufacturing process of alpha-beta diphasic titanium alloy heavy in section according to claim 1 ring, it is characterized in that, described alpha-beta diphasic titanium alloy is Ti6242 alloy.
3. the flash welding manufacturing process of alpha-beta diphasic titanium alloy heavy in section according to claim 1 and 2 ring, is characterized in that, the mathematic(al) representation in the temperature field that described flash of light process is formed is:
Wherein, T (x) is the temperature at distance end face x place; η is the heat ratio lost because of flash of light; Operating power when P is flash of light; Operating current when I is flash of light; ρ
tfor electrical conductivity; L is the girth of ring; S is the cross-sectional area of ring; d
0for scaling loss length during intense flash; Flash of light scaling loss speed when v is weak flash of light; T is the time of weak flash of light; λ is thermal conductivity; T
0for preheat temperature; C is thermal capacitance; ρ is density of material.
4. the flash welding manufacturing process of alpha-beta diphasic titanium alloy heavy in section according to claim 1 and 2 ring, it is characterized in that, the computing formula of described upset distance is as follows:
D＝d
1+(0.2～0.5)d
2
In formula:
D
1for the length of high temperature mushy zone;
D
2for the length in high temperature microstructure alligatoring district.
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| CN112743209A (en) * | 2019-10-31 | 2021-05-04 | 贵州安大航空锻造有限责任公司 | Flash welding forming method for titanium alloy irregular section annular part |
| CN113031533A (en) * | 2021-03-05 | 2021-06-25 | 西南交通大学 | Control method and device for alternating-current flash welding of steel rail and welding equipment |
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| CN102935550A (en) * | 2012-11-23 | 2013-02-20 | 贵州安大航空锻造有限责任公司 | Flash welding forming method of iron-based superalloy thin-wall ring member |
| CN102941405A (en) * | 2012-11-23 | 2013-02-27 | 贵州安大航空锻造有限责任公司 | Flash welding forming method of alpha-beta two-phase titanium alloy thin-wall ring piece |
| CN102962569A (en) * | 2012-11-23 | 2013-03-13 | 贵州安大航空锻造有限责任公司 | Flash welding shaping method for Alpha-phase titanium alloy thin-walled ring |
| CN102962567A (en) * | 2012-11-23 | 2013-03-13 | 贵州安大航空锻造有限责任公司 | Flash welding shaping method for nickel-based high-temperature alloy thin-wall ring |
| CN102974930A (en) * | 2012-11-23 | 2013-03-20 | 贵州安大航空锻造有限责任公司 | Flash welding forming method of cobalt-based high-temperature alloy thin-walled ring member |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112743209A (en) * | 2019-10-31 | 2021-05-04 | 贵州安大航空锻造有限责任公司 | Flash welding forming method for titanium alloy irregular section annular part |
| CN113031533A (en) * | 2021-03-05 | 2021-06-25 | 西南交通大学 | Control method and device for alternating-current flash welding of steel rail and welding equipment |
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