CN105611663B - The method of consumable electrode vacuum furnace electrode and welding method and vacuum consumable smelting feeding - Google Patents
The method of consumable electrode vacuum furnace electrode and welding method and vacuum consumable smelting feeding Download PDFInfo
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- CN105611663B CN105611663B CN201610169175.4A CN201610169175A CN105611663B CN 105611663 B CN105611663 B CN 105611663B CN 201610169175 A CN201610169175 A CN 201610169175A CN 105611663 B CN105611663 B CN 105611663B
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B7/00—Heating by electric discharge
- H05B7/02—Details
- H05B7/06—Electrodes
- H05B7/07—Electrodes designed to melt in use
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B34/00—Obtaining refractory metals
- C22B34/10—Obtaining titanium, zirconium or hafnium
- C22B34/12—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08
- C22B34/1295—Refining, melting, remelting, working up of titanium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/16—Remelting metals
- C22B9/20—Arc remelting
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Abstract
The present invention relates to smelting non-ferrous metal fields, and in particular, to a kind of consumable electrode vacuum furnace electrode, the welding method of the electrode, and the method for carrying out vacuum consumable smelting feeding using the electrode.The consumable electrode vacuum furnace electrode includes consutrode and auxiliary electrode, which is characterized in that is also connected with transition electrode in the centre of consutrode and auxiliary electrode.Consumable electrode vacuum furnace electrode of the invention can be effectively reduced operating cost, improve ingot rate, and improve the quality of ingot casting feeding end face.
Description
Technical field
The present invention relates to smelting non-ferrous metal fields, and in particular, to a kind of consumable electrode vacuum furnace electrode, the weldering of the electrode
Connect method, and the method for carrying out vacuum consumable smelting feeding using the electrode.
Background technique
With the development of technology, higher and higher to the requirement of titanium ingot quality, this requires wound is improved on method of smelting
Newly, the titanium ingot of high quality can just be produced.
The vacuum consumable smelting of titanium or titanium alloy is usually consutrode to be welded on auxiliary electrode, and pass through auxiliary electricity
Pole, which is suspended on the electrode pull rod of self-consuming furnace, carries out melting.When carrying out melting in this way, there can be following both sides
Problem:
1) auxiliary electrode can be gradually used up with the increase of melting number.This is because on the one hand in welding, auxiliary is electric
Pole can also occur part fusing and generate consumption；On the other hand when carrying out feeding in the consumable smelting later period, consutrode has been inserted into it
Partial auxiliary electrode can also melt with consutrode and generate consumption.Generally go through melting once, auxiliary electrode length
It will reduce by 20~50mm, thus frequently result in auxiliary electrode consumes comparatively fast because of fusing, and the preparation expense of auxiliary electrode is often
It is again higher, to increase production cost.
2) since the cost of manufacture of auxiliary electrode is higher, therefore auxiliary electrode diameter is often smaller, and generally consutrode is straight
The 1/3 of diameter.In consumable smelting, the diameter of consutrode will increase by 80~100mm after melting each time.It is mended in the melting later period
When contracting, it on the one hand can gradually melt and reduce the diameter from edge to center with the consutrode of auxiliary electrode connected component, it is another
The length of aspect consutrode, which is gradually reduced, to go to zero.At this moment, since the size by electrode density, each position is not quite identical etc.
Reason causes the current density on consutrode end face inconsistent, to cause end face burn-off rate inconsistent.This aspect meeting
So that consutrode end face forms the irregular branch shape of various extremes, and can gradually there be part constantly to fall down in lower section
In molten bath, some fusings, some is not melted then, causes end face second-rate；On the other hand, since end face burn-off rate is different
It causes, causes the weight of remaining consutrode and expected remaining weight that relatively large deviation gradually occurs, to seriously affect feeding effect
The stability of fruit causes the shrinkage cavity change in depth range of ingot casting larger.
Summary of the invention
The purpose of the present invention is overcoming the above problem present in existing consumable electrode vacuum furnace electrode, a kind of vacuum is provided
Self-consuming furnace electrode, the welding method of the electrode, and the method for carrying out vacuum consumable smelting feeding using the electrode.The present invention
Consumable electrode vacuum furnace electrode can be effectively reduced operating cost, improve ingot rate, and improve the matter of ingot casting feeding end face
Amount.
The present invention provides a kind of consumable electrode vacuum furnace electrodes, which includes consutrode and auxiliary
Electrode, wherein be also connected with transition electrode in the centre of consutrode and auxiliary electrode.
The present invention also provides the preparation methods of above-mentioned consumable electrode vacuum furnace electrode, wherein this method comprises: according to consumable
The order of connection of electrode, transition electrode and auxiliary electrode, by the consutrode, transition electrode and auxiliary electrode in central axes side
It is welded upwards.
Invention additionally provides a kind of methods of vacuum consumable smelting feeding, wherein this method includes by auxiliary electricity
Consumable electrode vacuum furnace of the invention is suspended on the electrode pull rod of consumable electrode vacuum furnace by pole with electrode, is then powered on, by certainly
The fusing of power pole carries out feeding to the ingot casting of base part.
The present invention is increased by the auxiliary electrode of the consumable electrode vacuum furnace electrode in this field routine and the intermediate of consutrode
Add transition electrode, can effectively solve the above problem present in existing consumable electrode vacuum furnace electrode.Certainly with existing vacuum
Consumption furnace is compared with electrode, and the advantage of consumable electrode vacuum furnace of the invention electrode essentially consists in:
(1) increasing transition electrode substantially reduces auxiliary electrode consumption, caused by the one hand reducing replacement auxiliary electrode
Cost, on the other hand when the base head production transition electricity formed during hammer cogging using ingot casting obtained by consumable electrode vacuum furnace melting
Also residual titanium has been carried out when pole to utilize, and improves benefit；
(2) by using transition electrode, especially in the case where the transition electrode for selecting suitable diameter, when the melting later period
Current density on consutrode end face still can be in a relatively uniform level, to greatly reduce real surplus electrode
The difference of weight and expected remaining electrode weight, effectively raises the stability of ingot casting feeding, greatly reduces shrinkage cavity depth,
Improve ingot rate；
(3) by using transition electrode, especially in the case where the transition electrode for selecting suitable diameter, ingot casting can be made to mend
Contracting end face quality is greatly improved, specifically: even if at the end of melting, since transition electrode diameter is big, under
On the one hand the electric arc cross-sectional area generated between square molten bath reduces the block of the branch shape formed on later period consutrode end face with regard to big
The quantity that shape object is fallen, on the other hand also due to increasing electric arc area coverage, molten bath area increases, it is ensured that after ingot casting is cooling
End face it is smooth.And ingot casting is in the later period due to when stripping off the skin, needing to carry out facing, this can reduce lathe tool with regard to one side and disappear
Consumption, on the other hand also improves the efficiency that strips off the skin.
Other features and advantages of the present invention will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
The drawings are intended to provide a further understanding of the invention, and constitutes part of specification, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is a kind of schematic diagram of the consumable electrode vacuum furnace electrode of specific embodiment according to the present invention.
Description of symbols
1 consutrode, 2 transition electrode, 3 auxiliary electrode
4 electrode pull rod, 5 furnace body, 6 ingot casting
Specific embodiment
Below in conjunction with attached drawing, detailed description of the preferred embodiments.It should be understood that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
In the present invention, in the absence of explanation to the contrary, the noun of locality used such as " upper and lower " typically refers to join
Examine shown in the drawings upper and lower, the connection term used is typically referred to reference to connection relationship shown in the drawings.
The present invention provides a kind of consumable electrode vacuum furnace electrodes, as shown in Figure 1, the consumable electrode vacuum furnace electrode includes consumable
Electrode 1 and auxiliary electrode 3, wherein be also connected with transition electrode 2 in the centre of consutrode 1 and auxiliary electrode 3.
In the present invention, there is no particular limitation for the diameter of the consutrode 1, auxiliary electrode 3 and transition electrode 2,
The diameter of middle consutrode 1 and auxiliary electrode 3 can be selected according to the mode of this field routine.In situations where it is preferred,
In the present invention, the diameter of the consutrode 1 > transition electrode 2 diameter > auxiliary electrode 3 diameter.With described
The diameter of consutrode 1 is 1 length unit meter, and the diameter of the transition electrode 2 for example can be 0.4-0.9 length unit, excellent
It is selected as 0.5-0.8 length unit, more preferably 0.7-0.8 length unit.The diameter of the auxiliary electrode 3 does not limit particularly
It is fixed, less than the diameter of the transition electrode 2.In the case where further preferably, in satisfaction " diameter > mistake of consutrode 1
Cross the diameter of diameter > auxiliary electrode 3 of electrode 2 " under the premise of, the diameter of the consutrode 1: the transition electrode 2 it is straight
Diameter: the diameter of the auxiliary electrode 3 can be 1:0.4-0.9:0.3-0.7, preferably 1:0.5-0.8:0.3-0.6, more preferably
For 1:0.6-0.75:0.3-0.5.
In the present invention, there is no particular limitation for the length of the consutrode 1, auxiliary electrode 3 and transition electrode 2,
The length of middle consutrode 1 and auxiliary electrode 3 can be selected according to the mode of this field routine.In situations where it is preferred,
In the present invention, the length of the consutrode 1: the length of the transition electrode 2: the length of the auxiliary electrode 3 is 1:
0.07-5:0.07-0.5, more preferably 1:0.1-0.5:0.1-0.4, most preferably 1:0.12-0.3:0.12-0.3.
In the present invention, there is no particular limitation for the selection of the material of the auxiliary electrode, can be according to this field routine
Mode selected, usually select the slightly higher material of hardness, such as select the titanium alloy of model TA1, TA2, TA3, TA4.
The material of the consutrode is material identical with ingot casting.The material of the transition electrode is preferably material identical with ingot casting
Material.In order to make full use of resource and reduce cost, in a preferred embodiment, the transition electrode is molten using consumable electrode vacuum furnace
The base head production that refining gained ingot casting is formed during hammer cogging.Specific production method can be according to the method for this field routine
Carry out, for example, transition electrode preparation method may include: by ingot casting obtained by consumable electrode vacuum furnace melting during hammer cogging
The base head of formation is forged, and forms the pole for being slightly larger than required transition electrode size, gained pole is successively carried out crop end
Transition electrode is obtained after stripping off the skin with surface turning.The various gold of vacuum consumable smelting can be used for this field as the ingot casting
Belong to, is preferably titanium or titanium alloy.
The present invention also provides the preparation methods of above-mentioned consumable electrode vacuum furnace electrode, wherein this method comprises: according to consumable
The order of connection of electrode 1, transition electrode 2 and auxiliary electrode 3, by the consutrode 1, transition electrode 2 and auxiliary electrode 3 in
It is welded on axis direction, as shown in Figure 1.
In the present invention, there is no particular limitation for the mode of the welding, can use the welding manner of this field routine.
The sequence of welding preferably first welds one end of transition electrode 2 and auxiliary electrode 3, then by the other end of transition electrode 2
It is welded with consutrode 1.
A kind of specific embodiment according to the present invention, preparation method may include: first to transition electrode and auxiliary electricity
Pole powers on, and makes the electric arc heat generated between transition electrode and auxiliary electrode, so that fusing shape occurs for one end face of transition electrode
It at molten bath, then cuts off the power, and auxiliary electrode is inserted into molten bath, after cooling, auxiliary electrode is welded on transition electrode
Together；Then consutrode and transition electrode-auxiliary electrode are powered on, and to generate between transition electrode and consutrode
Electric arc heat so that consutrode upper surface occur fusing form molten bath, then cut off the power, by the other end of transition electrode
Molten bath is inserted into face, and after cooling, transition electrode welds together with consutrode.
A kind of specific embodiment according to the present invention, the preparation method may include: according to connection side shown in FIG. 1
Formula powers on (electric current 2.5-3.5kA, voltage are 22~25V) to transition electrode and auxiliary electrode first, then gradually increases
High current (electric current is generally within 10kA) makes the electric arc heat generated between transition electrode and auxiliary electrode, so that transition electrode
One end face occurs to cut off the power after fusing forms molten bath (time is generally 5~15min), and auxiliary electrode is inserted into and is melted
Pond, after cooling, auxiliary electrode weld together with transition electrode；Then to consutrode and transition electrode-auxiliary electrode
Power on (electric current 2.5-3.5kA, voltage are 22~25V), be then gradually increased electric current (electric current is generally within 12kA),
And make the electric arc heat generated between transition electrode and consutrode, so that consutrode upper surface occurs fusing and forms molten bath
It cuts off the power after (time is generally 10~25min), molten bath, after cooling, mistake is inserted into the other end of transition electrode
It crosses electrode to weld together with consutrode, obtains consumable electrode vacuum furnace electrode.
Invention additionally provides a kind of methods of vacuum consumable smelting feeding, wherein this method includes by auxiliary electricity
Consumable electrode vacuum furnace of the invention is suspended on the electrode pull rod of consumable electrode vacuum furnace by pole with electrode, is then powered on, by certainly
The fusing of power pole carries out feeding to the ingot casting of base part.
The various metals that vacuum consumable smelting can be used for this field as the ingot casting, are preferably closed for titanium or titanium
Gold.
The present invention between auxiliary electrode and consutrode due to being provided with transition electrode, and the transition electrode can be adopted
The base head production that the ingot casting obtained by consumable electrode vacuum furnace melting is formed during hammer cogging, that is to say, the material of transition electrode can
, can also be same or similar with the material of consutrode with same or similar with the material of ingot casting, therefore, in the present invention, from
And when comsumable melt is exhausted, if preset system operatio is not over yet, fusing can be continued and consumed on a small quantity
To make operation of the invention with more flexibility, and consutrode is maximumlly utilized, and avoid more in transition electrode
The consumption of expensive auxiliary electrode.
It is not special for the specific method of vacuum consumable smelting feeding since inventive point of the invention is electrode
Restriction, the method for any vacuum consumable smelting feeding in this field can be adapted for the application.For example, the vacuum consumable is molten
The method for refining feeding can reduce melting electric current step by step using the technological operation of " multistage feeding, low current heat preservation " with gradually
Burn-off rate is reduced, to gradually reduce pool depth；And a period of time is kept the temperature in low current, it is ensured that head end has liquid always
Body, so that molten bath consecutive solidification inside-out, directly power-off causes to start in head end ecto-entad when avoiding molten bath deeper
Solidification, to form cooling meat hole (i.e. shrinkage cavity) in centre.
In the present invention, the series of the multistage feeding can be 5-20 grades, preferably 6-15 grades, more preferably 7-11
Grade；The electric current and voltage of the first order of the multistage feeding can be 15-30kA and 30-40V, preferably 15-25kA and 30-
35V；The electric current and voltage of the afterbody of the multistage feeding can be 2-6kA and 24-28V, preferably 3-5kA and 24-
27V；The feeding time of the multistage feeding can be with are as follows: when series is the 1/2~2/3 of total series, the feeding time can be longer
(for example, 15-60min), and be gradually shortened (when the feeding of afterbody to both ends (first order and afterbody) the feeding time
Between can foreshorten to 20min and hereinafter, the feeding time of the first order preferably foreshorten to 1-2min).
In the present invention, there is no particular limitation for the size of consumable electrode vacuum furnace electrode, can be conventional according to this field
Mode is selected.For example, with the diameter of ingot casting manufactured by the method for the vacuum consumable smelting feeding for 1 length unit
Meter, the diameter of consutrode 1 is 0.6~0.9 length unit in used consumable electrode vacuum furnace electrode, preferably 0.8~0.9
Length unit.
On the one hand consumable electrode vacuum furnace electrode of the invention and method can be effectively reduced the consumption of auxiliary electrode, extend
The replacement cycle of auxiliary electrode, to reduce production cost；On the one hand the stability of ingot casting feeding can be effectively improved,
By shrinkage cavity it is deep-controlled in 50mm hereinafter, being preferably controlled in 35mm or less；Another further aspect can cover feeding final stage electric arc
Capping account for the cold tumor of ingot casting end face ratio and ingot casting end face account for ingot casting end face ratio control in ideal range, to make
Ingot casting feeding end face quality is greatly improved.It should be noted that feeding final stage electric arc covering surface accounts for ingot casting end face ratio
Example is not the bigger the better, this is because electric arc covering surface is bigger, then pool depth may be made also bigger, so as to cause shrinkage cavity
It is deeper, thus the cold tumor in ingot casting end face account for ingot casting end face ratio can not too small (feeding final stage electric arc covering surface accounts for ingot casting
1) end face ratio is added with the ratio that the cold tumor in ingot casting end face accounts for ingot casting end face to be equal to.
The present invention will be described in detail by way of examples below.The following examples will be helpful to illustrate the present invention,
But its range is not limited to.
Embodiment 1-7 and comparative example 1 are for illustrating consumable electrode vacuum furnace electrode and its welding method
In the following Examples and Comparative Examples, auxiliary electrode uses the titanium alloy of the TA2 trade mark, ingot casting, consutrode and mistake
Cross the titanium alloy that electrode is TA1 model.
Embodiment 1
The base head production diameter formed during hammer cogging using ingot casting obtained by consumable electrode vacuum furnace melting be 620mm and
Length is the transition electrode of 500mm, and in addition prepares diameter is 400mm and length is 500mm auxiliary electrode and diameter and be
The consutrode that 900mm and length are 3000mm.According to connection type shown in FIG. 1, first to transition electrode and auxiliary electrode
Power on (electric current 3kA, voltage 24V), is then gradually increased electric current to 9kA, makes to produce between transition electrode and auxiliary electrode
Raw electric arc heat, so that one end face of transition electrode occurs to cut off the power after fusing forms molten bath (taking around 10min), and
Auxiliary electrode is inserted into molten bath, after cooling, auxiliary electrode welds together with transition electrode；Then to consutrode and mistake
It crosses electrode-auxiliary electrode and powers on (electric current 3kA, voltage 23V), be then gradually increased electric current to 11kA, and made
The electric arc heat generated between electrode and consutrode is crossed, so that the generation fusing of consutrode upper surface forms molten bath and (takes around
It cuts off the power after 18min), molten bath is inserted into the other end of transition electrode, after cooling, transition electrode is i.e. and consutrode
Weld together, obtains consumable electrode vacuum furnace electrode, be denoted as I1.
Table 1
| Product | Transition electrode diameter/mm | Auxiliary electrode diameter/mm | Consutrode diameter/mm | |
| Embodiment 1 | I1 | 620 | 400 | 900 |
| Embodiment 2 | I2 | 580 | 400 | 900 |
| Embodiment 3 | I3 | 660 | 400 | 900 |
| Embodiment 4 | I4 | 400 | 400 | 900 |
| Embodiment 5 | I5 | 500 | 400 | 900 |
| Embodiment 6 | I6 | 700 | 500 | 900 |
| Embodiment 7 | I7 | 800 | 600 | 900 |
Embodiment 2-7
The procedure of Example 1 was followed except that changing the ruler of transition electrode, auxiliary electrode and consutrode
Very little, specific as shown in table 1, the electrode obtained is denoted as I1~I7 respectively.
Comparative example 1
It the procedure of Example 1 was followed except that being not provided with transition electrode, but is 400mm and length by diameter
The auxiliary electrode that degree is 500mm and the consutrode that diameter is 900mm and length is 3000mm are welded directly together, and are obtained true
Empty self-consuming furnace electrode, is denoted as D1.
The welding process for observing embodiment 1-8, by welding effect note in table 2.
Table 2
The welding process of comparative example 1 is observed, discovery consutrode and auxiliary electrode are easy welding, and welding effect is good.
Embodiment 8-14 and comparative example 2 are for illustrating that consumable electrode vacuum furnace prepared above, which is used for vacuum consumable with electrode, to be melted
Refine the method and its effect of feeding.
Feeding is carried out to the ingot casting of diameter 1000mm.Consumable electrode vacuum furnace prepared above electrode I1~I7 and D1 are taken respectively
(respectively corresponding embodiment 8-14 and comparative example 2), auxiliary electrode is suspended on the electrode pull rod of consumable electrode vacuum furnace, according to from upper
The sequence that auxiliary electrode, transition electrode and consutrode are followed successively by under places electrode, then powers on, by certainly
The fusing of power pole carries out feeding to the ingot casting of base part.Specific feeding technology include: every furnace include sequentially in time into
Following 7 grades capable sub- feeding stages, this 7 grades electric power systems (being followed successively by electric current, voltage, feeding time) from the feeding stage are
27kA、31.5V、2min→20kA、30V、10min→13kA、28.5V、15min→9kA、27V、25min→7kA、27V、
35min→5.5kA、26.5V、50min→4kA、26.5V、20min。
The feeding of 10 heats is carried out using above-mentioned feeding technology, record feeding final stage electric arc covering surface accounts for ingot casting end face
Ratio (A), the cold tumor of shrinkage cavity depth (h) and ingot casting end face account for the ratio (B) of ingot casting end face, and calculate average number scale in table 3.
Table 3
| Electrode | A/% | h/mm | B/% | |
| Embodiment 8 | I1 | 61 | 30 | 39 |
| Embodiment 9 | I2 | 55 | 35 | 45 |
| Embodiment 10 | I3 | 65 | 37 | 35 |
| Embodiment 11 | I4 | 36 | 62 | 64 |
| Embodiment 12 | I5 | 47 | 48 | 53 |
| Embodiment 13 | I6 | 68 | 36 | 32 |
| Embodiment 14 | I7 | 77 | 38 | 23 |
| Comparative example 2 | D1 | 37 | 64 | 63 |
In conjunction with table 1, table 2 and table 3 as can be seen that transition electricity is arranged between auxiliary electrode and consutrode according to the present invention
Pole, can be deep-controlled in lesser range by shrinkage cavity, by feeding final stage electric arc covering surface account for ingot casting end face ratio and
The ratio (can reflect ingot casting surface flatness) that the cold tumor in ingot casting end face accounts for ingot casting end face is controlled in ideal range.And
And this consumable electrode vacuum furnace electrode of the invention can greatly reduce the consumption of auxiliary electrode, extend auxiliary electrode more
The period is changed, this is because: if every melting is primary when directlying adopt the mode that auxiliary electrode is connected with consutrode, auxiliary electricity
Pole length can reduce by 30~50mm, and auxiliary electrode usually has a minimum length to require (as the vacuum of 3t or more
Self-consuming furnace is required to auxiliary electrode length >=400mm), lower than after the requirement i.e. cannot reuse；And added using auxiliary electrode
After crossing electrode, auxiliary electrode can just be replaced after 60~90 furnaces generally can be used, and the replacement cycle can extend several times to tens times.
It is described the prefered embodiments of the present invention in detail above in conjunction with attached drawing, still, the present invention is not limited to above-mentioned realities
The detail in mode is applied, within the scope of the technical concept of the present invention, a variety of letters can be carried out to technical solution of the present invention
Monotropic type, these simple variants all belong to the scope of protection of the present invention.It is further to note that in above-mentioned specific embodiment
Described in each particular technique feature can be combined in any appropriate way in the case of no contradiction, be
Avoid unnecessary repetition, the invention will not be further described in various possible combinations.In addition, it is of the invention it is various not
Any combination can also be carried out between same embodiment, as long as it does not violate the idea of the present invention, equally should be considered as this
Invention disclosure of that.
Claims (13)
1. a kind of consumable electrode vacuum furnace electrode, which includes consutrode and auxiliary electrode, and feature exists
In being also connected with transition electrode in the centre of consutrode and auxiliary electrode.
2. consumable electrode vacuum furnace electrode according to claim 1, wherein the diameter of the consutrode > transition electricity
The diameter of pole > auxiliary electrode diameter.
3. consumable electrode vacuum furnace electrode according to claim 1, wherein with the diameter of the consutrode for 1 length list
Position meter, the diameter of the transition electrode is 0.4-0.9 length unit, and the diameter of the auxiliary electrode is less than the transition electricity
The diameter of pole.
4. consumable electrode vacuum furnace electrode according to claim 3, wherein with the diameter of the consutrode for 1 length list
Position meter, the diameter of the transition electrode are 0.7-0.8 length unit.
5. consumable electrode vacuum furnace electrode described in any one of -4 according to claim 1, wherein the consutrode it is straight
Diameter: the diameter of the transition electrode: the diameter of the auxiliary electrode is 1:0.4-0.9:0.3-0.7.
6. consumable electrode vacuum furnace electrode according to claim 5, wherein the diameter of the consutrode: the transition electricity
The diameter of pole: the diameter of the auxiliary electrode is 1:0.6-0.75:0.3-0.5.
7. consumable electrode vacuum furnace electrode according to claim 1, wherein the length of the consutrode: the transition electricity
The length of pole: the length of the auxiliary electrode is 1:0.07-5:0.07-0.5.
8. consumable electrode vacuum furnace electrode according to claim 1, wherein the transition electrode uses consumable electrode vacuum furnace melting
The base head that gained ingot casting is formed during hammer cogging is made.
9. the preparation method of consumable electrode vacuum furnace electrode described in any one of claim 1-8, which is characterized in that this method
It include: according to the order of connection of consutrode, transition electrode and auxiliary electrode, by the consutrode, transition electrode and auxiliary
Electrode is welded on the direction of central axes.
10. preparation method according to claim 9, wherein the sequence of the welding are as follows: first by one end of transition electrode with
Auxiliary electrode is welded, then the other end of transition electrode is welded with consutrode.
11. a kind of method of vacuum consumable smelting feeding, which is characterized in that this method includes passing through auxiliary electrode for claim
Consumable electrode vacuum furnace described in 1-8 is suspended on the electrode pull rod of consumable electrode vacuum furnace with electrode, is then powered on, by from power consumption
The fusing of pole carries out feeding to the ingot casting of base part.
12. according to the method for claim 11, wherein the method also includes: when the comsumable melt finishes,
It can continue to melt transition electrode.
13. according to the method for claim 12, wherein the ingot casting is titanium or titanium alloy.
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