CN109321761A - A kind of electroslag furnace preventing active metal scaling loss - Google Patents
A kind of electroslag furnace preventing active metal scaling loss Download PDFInfo
- Publication number
- CN109321761A CN109321761A CN201811315054.1A CN201811315054A CN109321761A CN 109321761 A CN109321761 A CN 109321761A CN 201811315054 A CN201811315054 A CN 201811315054A CN 109321761 A CN109321761 A CN 109321761A
- Authority
- CN
- China
- Prior art keywords
- consutrode
- blow pipe
- gas blow
- crystallizer
- active metal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- C22B9/18—Electroslag remelting
Abstract
The invention discloses the electroslag furnaces that one kind can prevent active metal scaling loss, including crystallizer, consutrode and gas blow pipe, the consutrode to be set to the center of crystallizer, the circumferentially fixed outer wall in consutrode of the gas blow pipe；The suitable for reading of the gas blow pipe is entrance, is connected to argon gas supply line；The lower mouth of gas blow pipe is outlet, is protruded into inside crystallizer with consutrode；Gas blow pipe welding state schedules the outer wall of consutrode.The invention has the benefit that gas blow pipe is perpendicularly fixed at the outer wall of consutrode, crystallizer is protruded into consutrode, argon gas enters molten slag bath from lower, drives air to crystallizer unlimited place suitable for reading since crystalliser feet sealing place, more rationally efficiently, what air purging was driven is more thorough.
Description
Technical field
The present invention relates to technical field of smelting, and in particular to one kind can prevent the electroslag furnace of active metal scaling loss.
Background technique
Electroslag remelting is due to its process characteristic, either the thermal ionization process at starting the arc initial stage or the thawing after stabilising arc
All there is the oxidization burning loss of active element in journey, consutrode, ESR ingot report of the burn out rate up to 90%, after causing remelting when serious
It is useless, it causes largely to waste.The content that these active elements are improved when even if making consutrode, due to the dynamic of reflow process
Variation, the burn out rate of these active elements can not be stablized, or even occur because active element improved in advance when making consutrode
Cause ESR ingot corresponding element too high levels exceeded more.
The principal element of active element scaling loss is oxidation, therefore the oxygen for reducing and controlling in reflow process is critically important.For this purpose,
Metallargist already develops many technical protection active elements, wherein just including that argon gas protection technique and addition aluminium powder are made also
Former slag technology.Argon gas protection technique is mainly the oxygen reduced in crystallizer；It is to eliminate argon gas to make reducing slag that aluminium powder, which is added,
The unstable oxide in oxygen and slag not emptied.These traditional methods think: water mold is sealing, argon gas
The air in crystallizer can not be driven from crystalliser feet, so can only be added at the top of crystallizer；Again because of the density of argon gas
It is bigger than air, crystalliser feet can be sunk to, air is driven out of crystallizer clean purpose to realize.But from again
The molten starting the arc starts, crystalliser feet extreme temperatures, the high vibration of electric arc, and bottom argon gas heated fast convection current rises, crystallizer
Air (oxygen) suitable for reading inevitably enters crystallizer；Aluminium powder is added in reflow process, it may occur however that aluminium powder is in consutrode
It puts up a bridge with crystallizer inner wall short-circuit, causes production accident；Also have by aluminium powder brush on consutrode, aluminium powder adhesion strength is small to be difficult to thickness
Brush, it is easy to fall off, add aluminium uneven, effect is bad.
Summary of the invention
It is an object of the present invention in view of the deficiencies of the prior art, provide one kind drive air thoroughly, avoid short circuit of putting up a bridge
The electroslag furnace for preventing active metal scaling loss.
The technical solution adopted by the present invention are as follows: one kind can prevent the electroslag furnace of active metal scaling loss, including crystallizer, consumable
Electrode and gas blow pipe, the consutrode are set to the center of crystallizer, and the gas blow pipe is circumferentially fixed in consutrode
Outer wall；The suitable for reading of the gas blow pipe is entrance, is connected to argon gas supply line；The lower mouth of gas blow pipe is outlet, with from power consumption
Pole is protruded into inside crystallizer.
According to the above scheme, gas blow pipe welding state schedules the outer wall of consutrode.
According to the above scheme, the distance between inner wall of the outer wall of the gas blow pipe and crystallizer is not less than 10mm.
According to the above scheme, the gas blow pipe has more, and the outer wall circumferential direction uniform intervals along consutrode are installed.
According to the above scheme, the gas blow pipe is round tube, flat tube or square tube.
According to the above scheme, the gas blow pipe is aluminum pipe, titanium tube or magnesium pipe.
According to the above scheme, the section of the consutrode is round or rectangular.
The invention has the benefit that
1, gas blow pipe is perpendicularly fixed at the outer wall of consutrode in the present invention, protrudes into crystallizer, argon with consutrode
Gas enters molten slag bath from lower, drives air to crystallizer unlimited place suitable for reading since crystalliser feet sealing place, more rationally high
Effect, air purging are driven more thorough；
2, gas blow pipe is made of the active metal element of easy scaling loss, protrudes into crystallizer, consutrode with consutrode
Gas blow pipe fusing instills slag bath while fusing, and active metal element enters slag bath more evenly, it is therefore prevented that metal powder is from power consumption
Pole and the bridging short circuit of crystallizer inner wall, avoid the generation of production accident, protect the work in consutrode esr process
Element such as titanium is sprinkled, aluminium, rare earth element etc. reduce burn out rate and improve qualification rate.
3, gas blow pipe is welded and fixed, and will not shake in air blowing process, can effectively prevent consutrode and crystallizer
The short circuit current of inner wall causes accident；
4, gas blow pipe is evenly arranged along the circumferentially-spaced of consutrode, avoids being formed when driving crystallizer inner air dead
Angle；
5, the present invention has rational design, easy to operate, and feasibility is good, high reliablity.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of a specific embodiment of the invention.
Wherein: 1, consutrode；2, crystallizer；3, gas blow pipe；4, molten slag layer；5, liquid aluminium drips；6, liquid steel drips；7, it melts
Pond；8, electroslag ingot.
Specific embodiment
For a better understanding of the present invention, the present invention is further described in the following with reference to the drawings and specific embodiments.
One kind as shown in Figure 1 can prevent the electroslag furnace of active metal scaling loss, mainly include crystallizer 2, consutrode 1,
And more gas blow pipes 3, the consutrode 1 are set to the center of crystallizer 2, the circumferential uniform intervals of the gas blow pipe 3
It is fixed on the outer wall of consutrode 1；The suitable for reading of the gas blow pipe 3 is entrance, is connected to argon gas supply line；Under gas blow pipe 3
Mouth is outlet, is protruded into inside crystallizer 2 with consutrode 1.The axis of gas blow pipe 3 is parallel with the axis of consutrode 1
Preferably, the gas blow pipe 3 welds the outer wall that state schedules consutrode 1.
Preferably, the distance between inner wall of the outer wall of gas blow pipe 3 and crystallizer 2 is not less than 10mm.
In the present invention, the gas blow pipe 3 can be round tube, flat tube, square tube, and making material is first by the active metal of easy scaling loss
Depending on element, aluminum pipe, titanium tube, magnesium pipe or the compo pipe of several active metals can be.In the present embodiment, gas blow pipe 3 is point
Seamless aluminium tubing is welded, when welding selects suitable welding material and mode, prevents gas blow pipe 3 from perforating.The wall thickness of gas blow pipe 3, specification
To comprehensively consider the inner wall safety clearance of itself and crystallizer 2 with quantity, active metal amount is added in average ton steel and argon gas it is uniform
Distribution, wherein the quantity of gas blow pipe 3 is adjusted according to the specification of consutrode 1, it is desirable that it is uniformly distributed in the outer wall of consutrode 1,
So that the fusing of gas blow pipe 3 is uniformly distributed as far as possible when being dropped into molten slag layer 4；The wall thickness and radical of gas blow pipe 3, specification determine
The amount of the active metal of addition can select wall thickness, internal-and external diameter and the radical of gas blow pipe 3 according to the amount of the active metal of addition.
In the present invention, described its section of consutrode 1 can be to be round or rectangular etc., and consutrode can be unitary electrode,
It is also possible to the combined type consutrode welded together；When influence reflow process adds slag operation, gas blow pipe 3 is securable to group
At the gap of box-like consutrode.The arrangement of consutrode 1 and gas blow pipe 3 should be staggered the later period plus slag charge position, it is convenient to add slag.
In the present embodiment, consutrode 1 and 3 section of gas blow pipe are circle, axis and the consutrode 1 of gas blow pipe 3
Axis is parallel；And gas blow pipe 3 is aluminum pipe.Esr process are as follows: 1, in 2 bottom of crystallizer place run-on tab and slag charge (if making
It is that pre-melted slag is poured into 2 bottom of crystallizer by pre-melted slag)；2, decline consutrode 1 is to starting the arc position (according to graphite electrode
Slugging then declines consutrode 1 to fritting slag blanket again after crystallizer 2 is exited in graphite electrode slugging)；3, argon gas supply pipe is connected
Road, argon flow are greater than 5L/min, and argon gas is through gas blow pipe 3 since purging is driven in crystallizer 2 upwards the bottom of crystallizer 2
Air (purge time is greater than half a minute)；Argon gas does not stop the outlet from gas blow pipe 3, as consutrode 1 enters molten bath 7, bottom
End is constantly melted, and the gas blow pipe 3 for being welded on outer wall is constantly fused into liquid aluminium drop 5 and drops into the formation reducing slag of molten slag layer 4；Melting
After 8 feeding of latter stage electroslag ingot, argon gas purging protection to electroslag ingot 8 is kept to demould as needed.
Finally it should be noted that these are only the preferred embodiment of the present invention, it is not intended to restrict the invention, although
Referring to embodiment, invention is explained in detail, for those skilled in the art, still can be to aforementioned
Technical solution documented by each embodiment is modified or equivalent replacement of some of the technical features, but it is all
Within the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on should be included in protection of the invention
Within the scope of.
Claims (7)
1. the electroslag furnace that one kind can prevent active metal scaling loss, which is characterized in that including crystallizer, consutrode and gas blow pipe,
The consutrode is set to the center of crystallizer, the circumferentially fixed outer wall in consutrode of the gas blow pipe；It is described to blow
The suitable for reading of tracheae is entrance, is connected to argon gas supply line；The lower mouth of gas blow pipe is outlet, is protruded into crystallizer with consutrode
Portion.
2. the electroslag furnace of active metal scaling loss can be prevented as described in claim 1, which is characterized in that the gas blow pipe welds state
Due to the outer wall of consutrode.
3. the electroslag furnace of active metal scaling loss can be prevented as described in claim 1, which is characterized in that the outer wall of the gas blow pipe
The distance between inner wall of crystallizer is not less than 10mm.
4. the electroslag furnace of active metal scaling loss can be prevented as described in claim 1, which is characterized in that the gas blow pipe has more
Root, the outer wall circumferential direction uniform intervals along consutrode are installed.
5. the electroslag furnace of active metal scaling loss can be prevented as described in claim 1, which is characterized in that the gas blow pipe is circle
Pipe, flat tube or square tube.
6. the electroslag furnace of active metal scaling loss can be prevented as described in claim 1, which is characterized in that the gas blow pipe is aluminium
Pipe, titanium tube or magnesium pipe.
7. the electroslag furnace of active metal scaling loss can be prevented as described in claim 1, which is characterized in that the consutrode is cut
Face is round or rectangular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811315054.1A CN109321761A (en) | 2018-11-06 | 2018-11-06 | A kind of electroslag furnace preventing active metal scaling loss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811315054.1A CN109321761A (en) | 2018-11-06 | 2018-11-06 | A kind of electroslag furnace preventing active metal scaling loss |
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| Publication Number | Publication Date |
|---|---|
| CN109321761A true CN109321761A (en) | 2019-02-12 |
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| CN201811315054.1A Pending CN109321761A (en) | 2018-11-06 | 2018-11-06 | A kind of electroslag furnace preventing active metal scaling loss |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112301230A (en) * | 2020-09-04 | 2021-02-02 | 武汉科技大学 | Hollow electroslag remelting consumable electrode, preparation method thereof and electroslag remelting method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204918713U (en) * | 2015-08-10 | 2015-12-30 | 中原特钢股份有限公司 | A electroslag gas blowing device for electroslag |
-
2018
- 2018-11-06 CN CN201811315054.1A patent/CN109321761A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204918713U (en) * | 2015-08-10 | 2015-12-30 | 中原特钢股份有限公司 | A electroslag gas blowing device for electroslag |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112301230A (en) * | 2020-09-04 | 2021-02-02 | 武汉科技大学 | Hollow electroslag remelting consumable electrode, preparation method thereof and electroslag remelting method |
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Application publication date: 20190212 |