CN106181083A - A kind of method based on arcing aluminothermy composite welding Large-diameter Steel stud - Google Patents
A kind of method based on arcing aluminothermy composite welding Large-diameter Steel stud Download PDFInfo
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- CN106181083A CN106181083A CN201610583213.0A CN201610583213A CN106181083A CN 106181083 A CN106181083 A CN 106181083A CN 201610583213 A CN201610583213 A CN 201610583213A CN 106181083 A CN106181083 A CN 106181083A
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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
- B23K28/00—Welding or cutting not covered by any of the preceding groups, e.g. electrolytic welding
- B23K28/02—Combined welding or cutting procedures or apparatus
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Abstract
The present invention relates to the welding method of a kind of stud and steel plate, specifically in a kind of method based on arcing aluminothermy composite welding Large-diameter Steel stud.Its characterization step is as follows: the preparation aluminum heat flux containing ferrum element；Then the aluminum heat flux of preparation is placed in inside ceramic ring, and full ceramic ring, to restart contravariant drawn arc stud welding machine, arcing occurs, the welding process completing stud welding machine completes.Light aluminum heat flux by arcing, promote the continuation of stud welding process, increase the fusing amount of welding, after arcing completes, after fixed bolt 10s 20s, complete composite welding.Welding of major diameter arc stud welding and steel plate can be realized, it is possible to solve the defect problem such as non-fusion of stud welding, there is advantage simple to operate, that work efficiency is high by the present invention.
Description
Technical field
The present invention relates to the method for attachment of steel stud and steel plate, be specifically related to one and be applicable to Large-diameter Steel stud and carbon steel
The welding method of sheet material.
Background technology
Electric arc stud welding be a kind of by the metal solder of spiral or column in the welding method of sheet metal table.Arc stud welding
It is compared to traditional stud processing as a kind of fusion welding method, there is time-consuming and material feature, and due to stud
Weldering not be used in plate surface perforate, and for some for requiring the equipment that sealing requirements is higher, arc stud welding welding can be effective
Avoid the generation of leakage accident.Based on the characteristic that arc stud welding is above-mentioned so that arc stud welding is in heavy-duty machinery processing industry and large-scale
Pressure vessel has huge development prospect.
Aluminum weld is exactly to utilize to cross hot molten metal produced by the exothermic reaction between metal-oxide and metallic aluminium
Add thermometal and realize the method combined, be also a kind of chemical reaction heat welding method as thermal source.During welding, in advance
The termination of two workpiece to be welded is fixed in casting mold, adds in then aluminium powder and brown iron oxide mixture (title thermite) being placed on crucible
Heat, is allowed to reduction exothermic reaction, becomes liquid metal (ferrum) and slag (predominantly Al2O3), inject casting mold.Liquid metal
Flow into joint leakage, form weld metal, on slag then floats on the surface.Become with weld metal chemistry to adjust melt temperature
Point, in thermite, often add appropriate additive and alloy.
The temperature of thermit reaction product is up to 3000 DEG C, but the temperature of actual welding aluminothermy molten steel the most only needs 2000 DEG C of left sides
Right.The solder flux applied in the market is primarily only the welding for rail, including two kinds: one be hardness be 280HB
Left and right rank, it is adaptable to the welding of China's U71Mn rail, another kind is about 300HB rank, it is adaptable to U75V rail
Welding.Fusion welding chemical reaction velocity is very fast, within the most several seconds, just can complete welding, and heat is high can effectively conduct in generation
To welding position so that it is fuse into one, form molecule and combine.
For the dissimilar steel arc stud welding of major diameter stud and high-strength steel sheet material, owing to arc stud welding essence is the welding of melting welding one
Method, arc stud welding does not only exist the problem that the welding of conventional steel plates exists, and at actual major diameter stud and the quenched height of middle carbon
The stud arcing welding of strong steel board have also appeared other Welding Problems not occurred in tradition melting welding.Conventional stud
Weldering is only applicable to the less welding with thin plate of stud diameter.For the stud of major diameter, it has substantially in the middle of arcing process
Inclined arc phenomenon and arc burning unstable, it is impossible to enough stud end faces of burning the most completely, cause stud fusing uneven, welding is molten
Pond is formed uneven, and the static mechanical property having a strong impact on welding point after the solidification of molten bath causes welding point not reach simultaneously
To intended appearance (as stud is crooked).
Summary of the invention
Present invention aim at solving incomplete fusion, the fusion penetration gas shallow, internal produced during existing Large-diameter Steel stud welding
The problems such as hole defect, it is provided that a kind of method based on arcing-aluminothermy composite welding Large-diameter Steel stud.
The present invention solves above-mentioned technical problem provides following solution as follows:
A kind of method based on arcing-aluminothermy composite welding Large-diameter Steel stud, specifically comprises the following steps that
Step 1, the preparation powdered aluminum heat flux containing ferrum element；
Step 2, grips stud, is then placed between stud and ceramic ring by aluminum heat flux, then stud is positioned at welding
On steel plate；
Step 3, carries out arcing to the stud behind location, completes arc discharge welding termination process；Meanwhile, by electricity during arcing
Arc ignites aluminum heat flux, heats stud, after-baking to stud after completing as arcing；Finally, stud is stablized
15s-20s, completes composite welding.
Further, arcing uses the welding current of 1000～2700A, and the arc time is 1000～1700ms.
Further, the model of the steel of stud is Q235.
The loading of aluminum heat flux increases along with stud diameter and increases, the stud of 16mm, and aluminum heat flux loading is
2.0g；The stud of 18mm, aluminum heat flux loading is 2.2g；The stud of 22mm, aluminum heat flux loading is 2.6g；The spiral shell of 27mm
Post, aluminum heat flux loading is 3.2g.
The aluminum heat flux used in the present invention is mixed by ferrum oxide, alloy iron powder, secondary solvent, aluminium powder, respectively forms
The percentage by weight of composition be ferrum oxide 65.5%～69.0%, alloy iron powder 5.5%～12.5%, aluminium powder 18.5%～
22.5%, secondary solvent 3.0%～7.0%, wherein, ferrum oxide is by Fe2O3/Fe3O4=1/3 composition, alloy iron powder by ferromanganese/
Ferrosilicon 1/1.5 forms, and secondary solvent is by Na2CO3/CaF2=1/1 composition.
Preferably, the purity of oxide powder and alloy iron powder, aluminium powder is 90.0%～98.0%, granular size be 20～
50 mesh；The granularity of secondary solvent powder is 60～200 mesh.
The present invention provides the preparation method of a kind of aluminum heat flux, including specifically comprising the following steps that
Step 1.1, weighs ferrum oxide, alloy iron powder, secondary solvent and aluminium powder by weight percentage；
Step 1.2, loads raw material in ball grinder, is filled with ball milling after argon after evacuation；Ratio of grinding media to material is 10～25:1, fills out
Material ratio is 30%～50%, and Ball-milling Time is 1～8h, and rotating ratio is 100～150r/min；Wherein, the independent ball milling of aluminium powder；
Step 1.3, by the aluminium powder after ball milling and other powder in cylinder, with rotating speed as 20r/min, rotates 8h mixing all
Even, prepare aluminum heat flux.
A diameter of 16-30mm of arcing of the present invention-aluminothermy composite welding Large-diameter Steel stud.
Compared with prior art, the present invention has remarkable advantage and is: 1, arcing-aluminothermy composite welding side that the present invention provides
Method can realize the major diameter stud welding of 16～27mm scopes；2, the heat that the present invention utilizes arcing to produce elevates the temperature and reaches
Reflecting point to aluminum heat flux so that thermit reaction occurs, and decreases the use of ignitor；Thermit reaction is for the guiding of electric arc
Effect, forms good weld seam, solves the problem that weld seam is unformed；3, the Al generated by thermit reaction2O3, cover surface, can
Molten bath is played a protective role, therefore without additional protection, it is not necessary to use special protection mode, protect only with insulator, i.e.
Can obtain internal non-oxidation be mingled with, imperforate welding point；4, by the synergy of thermit reaction heat energy Yu electric arc heat energy,
Making molten bath mobility dramatically increase, inner void defect is substantially reduced.
Accompanying drawing explanation
Fig. 1 is the flow chart of the composite welding of arcing-aluminothermy of the present invention；
Fig. 2 be use aluminum heat flux be 65.5% ferrum oxide, 5.5% alloy iron powder, 7.0% secondary solvent and
22.0% aluminium powder, the weld appearance of diameter 16mm stud shapes figure；
Fig. 3 is the weld appearance shaping figure of the diameter 18mm stud not using solder flux；
Fig. 4 is the ferrum oxide of aluminum heat flux employing 65.5%, 5.5% alloy iron powder, 7.0% secondary solvent and 22.0%
Aluminium powder, the weld appearance of diameter 22mm stud shapes figure；
Fig. 5 is the ferrum oxide of aluminum heat flux employing 65.5%, 5.5% alloy iron powder, 7.0% secondary solvent and 22.0%
Aluminium powder, the weld appearance of diameter 27mm stud shapes figure；
Fig. 6 is the ferrum oxide of aluminum heat flux employing 65.5%, 5.5% alloy iron powder, 7.0% secondary solvent and 22.0%
Aluminium powder, the stud welding appearance forming figure of diameter 18mm；
Fig. 7 is the ferrum oxide of aluminum heat flux employing 69.0%, 5.5% alloy iron powder, 3.0% secondary solvent and 22.5%
Aluminium powder, the stud welding appearance forming figure of diameter 18mm；
Fig. 8 is the ferrum oxide of aluminum heat flux employing 65.5%, 9.0% alloy iron powder, 7.0% secondary solvent and 18.5%
Aluminium powder, the stud welding appearance forming figure of diameter 18mm；
Fig. 9 be aluminum heat flux use 65.5% ferrum oxide, 12.5% alloy iron powder, 3.5% secondary solvent and
The aluminium powder of 18.5%, the stud welding appearance forming figure of diameter 18mm；
Figure 10 be aluminum heat flux use 67.0% ferrum oxide, 8.5% alloy iron powder, 4.5% secondary solvent and
The aluminium powder of 20.0%, the stud welding appearance forming figure of diameter 18mm；
Figure 11 is not use solder flux, the cross-section morphology figure that diameter 18mm stud welding shapes；
Figure 12 be aluminum heat flux use 65.5% ferrum oxide, 5.5% alloy iron powder, 7.0% secondary solvent and
The aluminium powder of 22.0%, the cross-section morphology figure that diameter 18mm stud welding shapes；
Figure 13 be aluminum heat flux use 69.0% ferrum oxide, 5.5% alloy iron powder, 3.0% secondary solvent and
The aluminium powder of 22.5%, the cross-section morphology figure that diameter 18mm stud welding shapes；
Figure 14 be aluminum heat flux use 65.5% ferrum oxide, 9.0% alloy iron powder, 7.0% secondary solvent and
The aluminium powder of 18.5%, the cross-section morphology figure that diameter 18mm stud welding shapes.
Detailed description of the invention
Embodiment 1
The flow chart of arcing as shown in Figure 1-aluminothermy composite welding Large-diameter Steel stud, is carried out 16mm major diameter stud
Welding, step is as follows: first prepare aluminum heat flux, weigh by weight percentage 65.5% ferrum oxide, 5.5% alloy iron powder,
7.0% secondary solvent and the aluminium powder 100g altogether of 22.0%, wherein, ferrum oxide 65.5g alloy iron powder 5.5g, secondary solvent
7.0g, aluminium powder is 22g.Wherein aluminium powder quality purity is 98.0%；By the brown iron oxide weighed up, alloy iron powder, secondary solvent one
With loading in ball grinder, with ratio of grinding media to material 18 1, filler ratio for 40%, evacuation after being filled with argon, with rotating ratio as 125r/
Min ball milling 6 hours；Aluminium powder uses the independent ball milling of above-mentioned condition, and ball milling ball is taken out after terminating by ball milling, is placed in by above-mentioned powder
Roll in cylinder, with 20r/min rotating speed, after rotating 8h, prepare aluminum heat flux.16mm major diameter spiral shell is captured again by robot
Post, the gap being placed between ceramic ring and stud by above-mentioned prepared aluminum heat flux, the quality of the aluminum heat flux of filling is 2.0g.
The finally Guan Bi stud welding machine source of welding current, arranging welding current is 1100A, and the arc time is 1000ms, starts drawing of arc stud welding
Arc process, the aluminum heat flux that arc ignition is filled simultaneously, and after stud arc discharge welding completes, proceed aluminum weld.Drawing
After arc welding completes, stud stablized by welding robot, unclamps gas pawl after 10s, completes compound sleeve welding.
As it is shown on figure 3, the stud molding of 16mm is full, it is relatively free of the stud welding of the parameter of the same race using solder flux, molten
Pond measure the biggest lifting, the mobility in molten bath is increased, and can be sufficiently formed outward appearance boss, and appearance forming is perfect.
Embodiment 2
The present embodiment does not use aluminum heat flux, captures 18mm major diameter stud and ceramic ring by machine device people.Guan Bi spiral shell
Post welder power supply, arranges welding current 1300A, and the arc time is 1200ms, starts the arcing process of arc stud welding, arc stud welding
Machine welds, and unclamps gas pawl, complete welding process after 13s.
As shown in figs. 2 and 11, compare discovery and be appreciated that under conditions of not using solder flux, the appearance forming of welding
Difference, forms perfect molten bath weld seam.Arc stud welding appearance of weld can only shape side, and opposite side is difficult to be covered by molten bath, and weld seam is not
Molding completely, the deficiency in weld seam molten bath causes the entrance of gas, easily produces pore, and gas pore in weld metal defect is obvious, seriously
Affect Weld Performance.
Embodiment 3
The present embodiment uses process conditions and the process of embodiment 1, wherein a diameter of 22mm of stud, and aluminum heat flux uses
Ferrum oxide, 5.5% alloy iron powder, 7.0% secondary solvent and the aluminium powder of 22.0% of 65.5%, the loading of aluminum heat flux is
2.6g, arcing condition uses welding current 2500A, and the arc time is 1600ms, and stablizing the stud time is 15s.
As shown in Figure 4, using solder flux to make the arriving of fusing amount in molten bath increase, the mobility in molten bath strengthens, and contributes to molten bath
The formation of boss, the fusing amount in molten bath increases, and weld seam forms quality and optimized, and the stud appearance of weld of 22mm is perfect, is formed
Good appearance forming.
Embodiment 4
The present embodiment uses process conditions and the process of embodiment 1, wherein a diameter of 27mm of stud, and aluminum heat flux uses
Ferrum oxide, 5.5% alloy iron powder, 7.0% secondary solvent and the aluminium powder of 22.0% of 65.5%, the loading of aluminum heat flux is
3.2g, arcing condition uses welding current 2500A, and the arc time is 1600ms, and stablizing the stud time is 20s.
As it is shown in figure 5, use solder flux to make the arriving of fusing amount in molten bath increase, the mobility in molten bath strengthens, and contributes to molten bath
The formation of boss, the stud outward appearance molding of 27mm is full, obtains good weld seam.
Embodiment 5
The present embodiment uses process conditions and the process of embodiment 1, wherein a diameter of 18mm of stud, and aluminum heat flux uses
Ferrum oxide, 5.5% alloy iron powder, 7.0% secondary solvent and the aluminium powder of 22.0% of 65.5%, the loading of aluminum heat flux is
2.2g, arcing condition uses welding current 1300A, and the arc time is 1200ms, and postwelding stablizes stud 13s.
As shown in Fig. 6 and Figure 12, using solder flux to make the arriving of fusing amount in molten bath increase, the mobility in molten bath strengthens, and helps
In the formation of molten bath boss, the fusing amount in molten bath increases, and weld seam forms quality and optimized, and plays relative to not using solder flux
Welding manner, uses the welding manner of solder flux, and the fusing of weld seam measures increase, reduces the space that gas enters, it is therefore prevented that weldering
The generation of pore in seam, it shears mechanical property and is improved, and 18mm stud molding is full and in weld seam, pore produces and almost do not has
Have, obtain arriving of good outward appearance, i.e. weldquality and improve.
Embodiment 6
The present embodiment uses process conditions and the process of embodiment 1, wherein a diameter of 18mm of stud, and aluminum heat flux uses
Ferrum oxide, 5.5% alloy iron powder, 3.0% secondary solvent and the aluminium powder of 22.5% of 69.0%, the loading of aluminum heat flux is
2.2g, arcing condition uses welding current 1300A, and the arc time is 1200ms, and postwelding stablizes stud 13s.
As shown in figs. 7 and 13, using solder flux to make the arriving of fusing amount in molten bath increase, the mobility in molten bath strengthens, and helps
In the formation of molten bath boss, the fusing amount in molten bath increases, decreases the entrance of gas, it is possible to prevent gas pore in weld metal shape
Become.18mm stud molding is full and in weld seam pore produce almost without, obtain good outward appearance, i.e. weldquality to carrying
High.
Embodiment 7
The present embodiment uses process conditions and the process of embodiment 1, wherein a diameter of 18mm of stud, and aluminum heat flux uses
Ferrum oxide, 9.0% alloy iron powder, 7.0% secondary solvent and the aluminium powder of 18.5% of 65.5%, the loading of aluminum heat flux is
2.2g, arcing condition uses welding current 1300A, and the arc time is 1200ms, and postwelding stablizes stud 13s.
As shown in Fig. 8 and Figure 14, using solder flux to make the arriving of fusing amount in molten bath increase, the mobility in molten bath strengthens, and helps
In the formation of molten bath boss, the fusing amount in molten bath increases, and weld seam forms quality and optimized, relative to the weldering not using solder flux
Connecing mode, use the welding manner of solder flux, it is sheared mechanical property and is improved, and 18mm stud molding is full and pore in weld seam
Produce almost without, obtain good outward appearance, i.e. weldquality to improve.
Embodiment 8
The present embodiment uses process conditions and the process of embodiment 1, wherein a diameter of 18mm of stud, and aluminum heat flux uses
Ferrum oxide, 12.5% alloy iron powder, 3.5% secondary solvent and the aluminium powder of 18.5%, the loading of aluminum heat flux of 65.5%
For 2.2g, arcing condition uses welding current 1300A, and the arc time is 1200ms, and postwelding stablizes stud 13s.
As it is shown in figure 9, use solder flux to make the arriving of fusing amount in molten bath increase, the mobility in molten bath strengthens, and contributes to molten bath
The formation of boss, the fusing amount in molten bath increases, and weld seam forms quality and optimized, relative to the welding side not using solder flux
Formula, uses the welding manner of solder flux, and it is sheared mechanical property and is improved, and 18mm stud molding is full obtains good outward appearance,
I.e. arriving of weldquality is improved.
Embodiment 9
The present embodiment uses process conditions and the process of embodiment 1, wherein a diameter of 18mm of stud, and aluminum heat flux uses
Ferrum oxide, 8.5% alloy iron powder, 4.5% secondary solvent and the aluminium powder of 20.0% of 67.0%, the loading of aluminum heat flux is
2.2g, arcing condition uses welding current 1300A, and the arc time is 1200ms, and postwelding stablizes stud 13s.
As shown in Figure 10, using solder flux to make the arriving of fusing amount in molten bath increase, the mobility in molten bath strengthens, and contributes to molten bath
The formation of boss, the fusing amount in molten bath increases, and weld seam forms quality and optimized, relative to the welding side not using solder flux
Formula, uses the welding manner of solder flux, and it is sheared mechanical property and is improved, and 18mm stud molding is full, obtains good outward appearance,
I.e. arriving of weldquality is improved.
As shown in table 1 for the shear strength in each embodiment and the contrast of shearing force.
Table 1
| Embodiment | Stud diameter/mm | Shearing force/kN | Shear strength/Mpa |
| 1 | 16 | 55.16 | 274 |
| 2 | 18 | 81.65 | 321 |
| 3 | 22 | 143.69 | 378 |
| 5 | 18 | 87.760 | 345 |
| 6 | 18 | 82.63 | 325 |
| 7 | 18 | 84.72 | 333 |
| 8 | 18 | 85.94 | 338 |
| 9 | 18 | 86.85 | 341 |
Claims (10)
1. a method based on arcing-aluminothermy composite welding Large-diameter Steel stud, it is characterised in that specifically comprise the following steps that
Step 1, the preparation powdered aluminum heat flux containing ferrum element；
Step 2, grips stud, is then placed between stud and ceramic ring by aluminum heat flux, then stud is positioned at welding steel
On；
Step 3, carries out arcing to the stud behind location, completes arc discharge welding termination process；Meanwhile, drawn by electric arc during arcing
Combustion aluminum heat flux, heats stud, after-baking to stud after completing as arcing；Finally, stud 10s-is stablized
20s, completes composite welding.
Method based on arcing-aluminothermy composite welding major diameter stud the most according to claim 1, it is characterised in that institute
The aluminum heat flux stated is mixed by ferrum oxide, alloy iron powder, secondary solvent, aluminium powder, and the percentage by weight of each composition is oxidation
Ferrum 65.5%～69.0%, alloy iron powder 5.5%～12.5%, aluminium powder 18.5%～22.5%, secondary solvent 3.0%～
7.0%, wherein, ferrum oxide is by Fe2O3/Fe3O4The mass ratio composition of=1/3, alloy iron powder is by the matter of ferromanganese/ferrosilicon=1/1.5
Amount is than composition, and secondary solvent is by Na2CO3/CaF2The mass ratio composition of=1/1.
Method based on arcing-aluminothermy composite welding major diameter stud the most according to claim 2, it is characterised in that institute
The purity of ferrum oxide, alloy iron powder and the aluminium powder stated is 90.0%～98.0%, and granular size is 20～50 mesh；Secondary solvent powder
The granularity at end is 60～200 mesh.
Method based on arcing-aluminothermy composite welding major diameter stud the most according to claim 2, it is characterised in that institute
The aluminum heat flux stated is prepared by following steps:
Step 1.1, weighs ferrum oxide, alloy iron powder, secondary solvent and aluminium powder by weight percentage；
Step 1.2, loads raw material in ball grinder, is filled with ball milling after argon after evacuation；Ratio of grinding media to material is 10～25:1, filler ratio
Being 30%～50%, Ball-milling Time is 1～8h, and rotating ratio is 100～150r/min；Wherein, the independent ball milling of aluminium powder；
Step 1.3, by the aluminium powder after ball milling and other powder in cylinder, with rotating speed as 20r/min, rotates 8h mix homogeneously,
Prepare aluminum heat flux.
Method based on arcing-aluminothermy composite welding Large-diameter Steel stud the most according to claim 1, it is characterised in that
In step 2, the loading of aluminum heat flux increases along with stud diameter and increases, and aluminum heat flux loading is 2.0g-3.2g.
Method based on arcing-aluminothermy composite welding Large-diameter Steel stud the most according to claim 1, it is characterised in that
In step 3, described arcing uses the welding current of 1000～2700A, and the arc time is 1000～1700ms.
Method based on arcing-aluminothermy composite welding Large-diameter Steel stud the most according to claim 1, it is characterised in that
The model of the steel of described stud is Q235.
Method based on arcing-aluminothermy composite welding Large-diameter Steel stud the most according to claim 1, it is characterised in that
A diameter of 16-30mm of described Large-diameter Steel stud.
9. the aluminum heat flux for method based on arcing-aluminothermy composite welding Large-diameter Steel stud, it is characterised in that institute
The aluminum heat flux stated is mixed by ferrum oxide, alloy iron powder, secondary solvent, aluminium powder, and the percentage by weight of each composition is oxidation
Ferrum 65.5%～69.0%, alloy iron powder 5.5%～12.5%, aluminium powder 18.5%～22.5%, secondary solvent 3.0%～
7.0%, wherein, ferrum oxide is by Fe2O3/Fe3O4The mass ratio composition of=1/3, alloy iron powder is by the matter of ferromanganese/ferrosilicon=1/1.5
Amount is than composition, and secondary solvent is by Na2CO3/CaF2The mass ratio composition of=1/1.
Exothermic welding for method based on arcing-aluminothermy composite welding Large-diameter Steel stud the most according to claim 9
Agent, it is characterised in that the purity of described ferrum oxide, alloy iron powder and aluminium powder is 90.0%～98.0%, and granular size is 20
～50 mesh；The granularity of secondary solvent powder is 60～200 mesh.
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| CN106903403A (en) * | 2017-03-27 | 2017-06-30 | 南京理工大学 | The middle special arc stabilizer of major diameter arc stud welding and welding method |
| CN110856882A (en) * | 2018-08-26 | 2020-03-03 | 南京理工大学 | Arc-discharge stud welding method by hollow stud induced electron emission |
| CN110856883A (en) * | 2018-08-26 | 2020-03-03 | 南京理工大学 | Arc-drawing type stud welding induction auxiliary arc striking agent for medium-large diameter stud and arc striking method thereof |
| CN114700582A (en) * | 2021-12-20 | 2022-07-05 | 天津英利模具制造有限公司 | One-step arc welding process for standard parts and other parts |
| CN114833486A (en) * | 2021-01-30 | 2022-08-02 | 南京理工大学 | Arc-discharge type stud welding flux for medium-diameter and large-diameter studs |
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| CN101372068A (en) * | 2008-08-18 | 2009-02-25 | 江阴东大新材料研究院 | Faster welding method for armored vehicle aluminium alloy part for emergency in battlefield |
| CN103639613A (en) * | 2013-12-12 | 2014-03-19 | 国家电网公司 | Heat-releasing welding flux for iron-base copper-clad steel grounding grid |
| CN103639589A (en) * | 2013-12-20 | 2014-03-19 | 武汉大学 | Aluminum-steel heat release welding method |
| CN105478972A (en) * | 2014-09-16 | 2016-04-13 | 南京理工大学 | Stud welding method based on coating self-protection |
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| CN106903403A (en) * | 2017-03-27 | 2017-06-30 | 南京理工大学 | The middle special arc stabilizer of major diameter arc stud welding and welding method |
| CN106903403B (en) * | 2017-03-27 | 2019-06-04 | 南京理工大学 | The dedicated arc stabilizer of middle major diameter arc stud welding and welding method |
| CN110856882A (en) * | 2018-08-26 | 2020-03-03 | 南京理工大学 | Arc-discharge stud welding method by hollow stud induced electron emission |
| CN110856883A (en) * | 2018-08-26 | 2020-03-03 | 南京理工大学 | Arc-drawing type stud welding induction auxiliary arc striking agent for medium-large diameter stud and arc striking method thereof |
| CN110856883B (en) * | 2018-08-26 | 2021-08-03 | 南京理工大学 | Arc-drawing type stud welding induction auxiliary arc striking agent for medium-large diameter stud and arc striking method thereof |
| CN110856882B (en) * | 2018-08-26 | 2021-09-28 | 南京理工大学 | Arc-discharge stud welding method by hollow stud induced electron emission |
| CN114833486A (en) * | 2021-01-30 | 2022-08-02 | 南京理工大学 | Arc-discharge type stud welding flux for medium-diameter and large-diameter studs |
| CN114700582A (en) * | 2021-12-20 | 2022-07-05 | 天津英利模具制造有限公司 | One-step arc welding process for standard parts and other parts |
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Application publication date: 20161207 |