CN105018674A - Drill bit for electric furnace tapping hole - Google Patents
Drill bit for electric furnace tapping hole Download PDFInfo
- Publication number
- CN105018674A CN105018674A CN201510450527.9A CN201510450527A CN105018674A CN 105018674 A CN105018674 A CN 105018674A CN 201510450527 A CN201510450527 A CN 201510450527A CN 105018674 A CN105018674 A CN 105018674A
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- CN
- China
- Prior art keywords
- drill bit
- electric furnace
- cutter
- tool mounting
- drill body
- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Blast Furnaces (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
The invention discloses a drill bit for an electric furnace tapping hole. The drill bit comprises a drill bit body and a connecting drill stem which is connected with the drill bit body, wherein the drill bit body is integrally of a cone shape; the conical front end of the drill bit body is of a cross shape formed by four cutting tool mounting parts; each cutting tool mounting part is detachably provided with a cutting tool; and four air holes are reserved inside the drill bit body. The invention provides the drill bit capable of rapidly opening the electric furnace tapping hole; the electric furnace tapping hole can be rapidly opened by the detachable cutting tools embedded in the top end of the drill bit; and the online replacement of the cutting tools can be realized. The drill bit has the advantages that the labor intensity is reduced; the smelting time is shortened; and the smelting power consumption is reduced. The drill bit for the electric furnace tapping hole can be popularized and applied to similar industries and fields, so that the prospect is wide.
Description
Technical field
The present invention relates to field of metallurgy, particularly relate to a kind of tap hole of electric furnace drill bit.
Background technology
Current non-blast furnace ironmaking novel process is developed rapidly in the whole world, wherein " the molten point dark reduction of rotary hearth furnace direct-reduction-electric furnace " technique is one of non-blast furnace ironmaking new technology, adopt this technical process process vanadium titano-magnetite, can reach the object of iron in vanadium titano-magnetite, vanadium, titanium Separation and Recovery, be realize the brand-new road that schreyerite resource comprehensively recyles.
By rotary hearth furnace, pit coal mixing pelletizing is carried out to the metallized pellet of the high degree of metalization that direct-reduction is produced, create favorable conditions for electric furnace reduces deeply, by electric furnace, fusing is carried out to metallized pellet, and drastic reduction is carried out to barium oxide wherein, final slag sluicing system obtains vanadium-bearing hot metal and Ti-containing slag, realizes iron, vanadium is effectively separated with titanium.By carrying out oxygen blast to vanadium-bearing hot metal, obtaining vanadium slag, vanadium extraction being carried out to vanadium slag and titanium is carried to Ti-containing slag, realize vanadium, titanium and process further and reclaim, finally reach the object of iron, vanadium, titanium comprehensive reutilization.
Open stifled slag notch, iron notch is an important step in electric furnace production process.The time of boring mud iron mouth directly affects the electric furnace production cycle.The tap-hole opening and sealing unit drill bit of existing electric furnace slag notch and iron notch has the following disadvantages:
1) cutter is only installed in the front end of drill body, and such working efficiency is very low; And the cutter of conventional drill generally adopts the mode of being fixedly connected with drill body, when causing cutter normally to work like this after tool wear severity, just can only change a new drill bit, so just waste the resource of drill body, because drill body adopts chromium tungstenalloy steel to manufacture, its cost is higher, will be unfavorable for cost-saving like this.
2) chisel edge design is unreasonable, taper gentle gradient or substantially without the gradient, jewel hole needs 30min ~ 40min, inefficiency; Bore not open time serious, manually need burn oxygen, increase labour intensity, extend tap to tap time, melting electric consumption raises, and increases smelting cost.
3) conventional drill uses plain carbon stool, and wear resistance at elevated temperature is poor, and each drilling life of bit 3 ~ 5 times, work-ing life is short.
Summary of the invention
For the weak point that prior art exists, the object of the present invention is to provide a kind of tap hole of electric furnace drill bit, its jewel hole speed is fast, and duration of service is long, only need change top cutter, provide cost savings.
Object of the present invention is achieved through the following technical solutions:
A kind of tap hole of electric furnace drill bit, the jointed rod comprising drill body and be connected with drill body, the overall tapered shape of described drill body, and the tapered front end of drill body forms " ten " word shape by four tool mounting portion, and each tool mounting portion is detachably provided with cutter; Described drill body internal reservation four pores.
In order to realize the present invention better, described cutter is embedded on corresponding tool mounting portion, and cutter is fixed on tool mounting portion by several hexagon socket head cap screws.
The present invention's preferred pore setting position is as follows: four pore one_to_one corresponding four tool mounting portion settings respectively.
The present invention's preferred drill body Materials Selection Technology scheme is as follows: described drill body is formed by the manufacture of chromium tungstenalloy steel.
The present invention's preferred cutter material selection technique scheme is as follows: described cutter is formed by Hardmetal materials manufacture.
The preferred technical scheme of the present invention is as follows: each cutter is fixed on tool mounting portion by two hexagon socket head cap screws.
The present invention comparatively prior art compares, and has the following advantages and beneficial effect:
(1) the invention provides a kind of drill bit opening tap hole of electric furnace fast, can realize opening tap hole of electric furnace fast by inlaying dismountable cutter at drill end, and can change online cutter.Reduce labour intensity, shorten the heat, reduce melting electric consumption.Similar industry and field can be applied to, have a extensive future.
(2) the present invention is in use, and it is short that it opens the iron notch time, by jewel hole to tap a blast furnace only need 5 ~ 8min.Long service life of the present invention, often pay cutter and can open iron notch about 18 times, each drill body can use 40 ~ 50 times; Compare conventional drill work-ing life 3 ~ 4 times, and more bit change is all change, its drill body cannot reuse, and it substantially prolongs the work-ing life of drill bit, has greatly saved cost.
(3) the cutter changing time of the present invention is short, changes one pair of cutter and needs 5 ~ 10min.And ventilation body can play cooling effect to drill body in drill body, reduction replacing cutter and drill body suffer the probability of scald accident.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is that the A-A of Fig. 1 is to sectional view;
Fig. 3 is the structural representation of drill body;
Fig. 4 is drill body and cutter mounting structure schematic diagram.
Wherein, the name corresponding to the Reference numeral in accompanying drawing is called:
1-cutter, 2-hexagon socket head cap screw, 3-pore, 4-drill body.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail:
Embodiment
As shown in Figure 1 to 4, a kind of tap hole of electric furnace drill bit, the jointed rod comprising drill body 4 and be connected with drill body 4, the overall tapered shape of described drill body 4, and the tapered front end of drill body 4 forms " ten " word shape by four tool mounting portion, and each tool mounting portion is detachably provided with cutter 1; Described drill body 4 internal reservation four pores 3.
According to a preferred embodiment of the present invention, cutter 1 is embedded on corresponding tool mounting portion, and cutter 1 is fixed on tool mounting portion by several hexagon socket head cap screws 2.As shown in Figure 1, Figure 3, each cutter 1 is fixed on tool mounting portion by two hexagon socket head cap screws 2.
According to a preferred embodiment of the present invention, four pore 3 one_to_one corresponding four tool mounting portion settings respectively, drill body 4 of the present invention is also provided with the 5th pore 3, and as shown in Figure 3, the 5th pore 3 is arranged at " ten " font center position of four tool mounting portion settings.
According to a preferred embodiment of the present invention, drill body 4 is formed by the manufacture of chromium tungstenalloy steel.
According to a preferred embodiment of the present invention, cutter 1 is formed by Hardmetal materials manufacture.
The principle of work of tap hole of electric furnace drill bit of the present invention when reality uses is as follows:
The molten point electric furnace of 12500kVA, iron notch thickness 1.4m, by stemming shutoff, raw material is the metallized pellet after rotary hearth furnace prereduction, and metallized pellet is added in electric furnace in batches by furnace roof tremie pipe, adds the nut coke matched with it simultaneously, melt and carry out drastic reduction, until slag and hot metal composition qualified after, start tap-hole opening and sealing unit, machine drill head of widening the view (i.e. tap hole of electric furnace drill bit of the present invention) is aimed at iron notch and is carried out drilling.
When boring iron notch, stemming can excise and reaming by the cutter 1 on drill body 4 top gradually, is removed by the stemming of excision by the gas passed in the pore 3 be communicated with simultaneously, avoids the cutter 1 that bonds.
When cutter 1 may wear to a certain degree, by unclamping hexagon socket head cap screw 2, quick-replaceable cutter 1.
By melting facts have proved on point electric furnace at 12500kVA, the drill bit of the present embodiment has the following advantages:
1) it is short to open the iron notch time, by jewel hole only need 5 ~ 8min to tapping a blast furnace.
2) long service life, often pay cutter and can open iron notch about 18 times, each drill body can use 40 ~ 50 times; Compare conventional drill work-ing life 3 ~ 4 times, and more bit change is all change, its drill body cannot reuse, and it substantially prolongs the work-ing life of drill bit, has greatly saved cost.
3) cutter 1 replacing construction is short, changes one pair of cutter and needs 5 ~ 10min.
4) in drill body 4, ventilation body can play cooling effect to drill body 4, and reduction replacing cutter 1 and drill body 4 suffer the probability of scald accident.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a tap hole of electric furnace drill bit, it is characterized in that: the jointed rod comprising drill body (4) and be connected with drill body (4), the overall tapered shape of described drill body (4), and the tapered front end of drill body (4) forms " ten " word shape by four tool mounting portion, each tool mounting portion is detachably provided with cutter (1); Described drill body (4) internal reservation four pores (3).
2. according to a kind of tap hole of electric furnace drill bit according to claim 1, it is characterized in that: described cutter (1) is embedded on corresponding tool mounting portion, and cutter (1) is fixed on tool mounting portion by several hexagon socket head cap screws (2).
3. according to a kind of tap hole of electric furnace drill bit described in claim 1 or 2, it is characterized in that: four pore (3) one_to_one corresponding four tool mounting portion settings respectively.
4. according to a kind of tap hole of electric furnace drill bit according to claim 1, it is characterized in that: described drill body (4) is formed by the manufacture of chromium tungstenalloy steel.
5. according to a kind of tap hole of electric furnace drill bit according to claim 1, it is characterized in that: described cutter (1) is formed by Hardmetal materials manufacture.
6. according to a kind of tap hole of electric furnace drill bit according to claim 2, it is characterized in that: each cutter (1) is fixed on tool mounting portion by two hexagon socket head cap screws (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510450527.9A CN105018674A (en) | 2015-07-28 | 2015-07-28 | Drill bit for electric furnace tapping hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510450527.9A CN105018674A (en) | 2015-07-28 | 2015-07-28 | Drill bit for electric furnace tapping hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105018674A true CN105018674A (en) | 2015-11-04 |
Family
ID=54408972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510450527.9A Pending CN105018674A (en) | 2015-07-28 | 2015-07-28 | Drill bit for electric furnace tapping hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105018674A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101109025A (en) * | 2007-08-24 | 2008-01-23 | 营口海缘炉料有限公司 | High angle drill at blast furnace casting port |
| CN201071374Y (en) * | 2007-06-15 | 2008-06-11 | 丁立波 | Taper type centring drill |
| CN201317784Y (en) * | 2008-12-28 | 2009-09-30 | 娄底市大雄型钢制造有限公司 | Self-cooling blast furnace tap hole bit |
| CN201371262Y (en) * | 2009-03-13 | 2009-12-30 | 衡阳市泰和机械实业有限公司 | Iron notch opening drill |
| CN201648417U (en) * | 2010-02-09 | 2010-11-24 | 王恩余 | High-angle drill for tap hole of blast furnace |
-
2015
- 2015-07-28 CN CN201510450527.9A patent/CN105018674A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201071374Y (en) * | 2007-06-15 | 2008-06-11 | 丁立波 | Taper type centring drill |
| CN101109025A (en) * | 2007-08-24 | 2008-01-23 | 营口海缘炉料有限公司 | High angle drill at blast furnace casting port |
| CN201317784Y (en) * | 2008-12-28 | 2009-09-30 | 娄底市大雄型钢制造有限公司 | Self-cooling blast furnace tap hole bit |
| CN201371262Y (en) * | 2009-03-13 | 2009-12-30 | 衡阳市泰和机械实业有限公司 | Iron notch opening drill |
| CN201648417U (en) * | 2010-02-09 | 2010-11-24 | 王恩余 | High-angle drill for tap hole of blast furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151104 |
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| RJ01 | Rejection of invention patent application after publication |