CN201990688U - Improved drill bit of taphole drilling machine of blast furnace - Google Patents
Improved drill bit of taphole drilling machine of blast furnace Download PDFInfo
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- CN201990688U CN201990688U CN2011200502014U CN201120050201U CN201990688U CN 201990688 U CN201990688 U CN 201990688U CN 2011200502014 U CN2011200502014 U CN 2011200502014U CN 201120050201 U CN201120050201 U CN 201120050201U CN 201990688 U CN201990688 U CN 201990688U
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- drill bit
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- blast furnace
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Abstract
The utility model provides an improved drill bit of a taphole drilling machine of a blast furnace, which belongs to the technical field of blast furnace equipment, is used for overcoming the defect that the drill bit of the taphole drilling machine of the blast furnace is easy to fall off, and has the technical scheme that the improved drill bit comprises a drill bit body and hard alloys, wherein the hard alloys are welded in a groove at the top of the drill bit body; the welded surfaces of the hard alloys, which are opposite to the two sides of the groove of the drill bit body, are inclined surfaces; the included angles between the inclined surfaces and the vertical direction are 10 degrees to 12 degrees; the borders of the welded surfaces of the hard alloys, which are opposite to the bottom surface of the groove of the drill bit body, are provided with beveled edges; the beveled edges have angles of 45 degrees to 50 degrees; and the hard alloys are welded by adopting national standard THJ422 welding rods. The improved drill bit has the beneficial effects that the included angles are arranged between the two sides of the hard alloys and the drill bit body and between the bottoms of the hard alloys and the drill bit body, so after being welded, the hard alloys cannot slide and fall off in all directions; since the hard alloys are welded by adopting the national standard THJ422 welding rods, when the improved drill bit is in use, the endurable high temperature can far surpass the melting point of a copper alloy, so when a taphole of the taphole drilling machine of the blast furnace is drilled, the improved drill bit cannot melt or fall off, and thereby the problem which has not been solved for many years is solved.
Description
Technical field
The utility model relates to a kind of drill bit of tap hole of blast furnace use of iron and steel enterprise, belongs to the blast-furnace equipment technical field.
Background technology
At present, a lot of iron and steel enterprises still adopt tap hole of blast furnace to operate according to traditional hatch method when being implemented in the operation of blast furnace opening.This working method is, carry out opening (cinder notch, Tie Kou) molten iron is emitted when reaching certain temperature blast-melted, this moment molten iron temperature up to more than 1600 ℃.
When implementing the operation of blast furnace opening, need the drill bit of tap hole of blast furnace that blast furnace taphole is opened, general tap hole of blast furnace drill bit all adopts the structure of welding Wimet on frame of the bit now, oxygen weld or hight frequency welding are adopted in welding, welding material is a copper alloy, and the welding angle of Wimet and frame of the bit is the 90o right angle.But find that in practice the drill bit of this universal architecture only is suitable for the operation under the low-temperature condition,, do not use and be suitable for tap hole of blast furnace as colliery, iron ore etc.Its reason is that the temperature of molten iron of blast furnace opening part is more than 1600o, and the copper alloy fusing point has only 700 ℃-800 ℃, two kinds of temperature differ greatly, when the drill bit that uses the copper alloy welding carries out the tap hole of blast furnace opening, also do not reach a half, copper alloy just begins fusing, at this moment Wimet can not be connected with frame of the bit, begin to come off, make the taphole drilling machine can not be with cinder notch or iron mouth smooth opening, drill bit be scrapped simultaneously, the drill steel that connects can not use, can only change new drill bit and drill steel, continue opening, need replacing just can fulfil assignment several times sometimes, the time that has not only postponed the opening operation, also waste drill bit, reduced production efficiency, improved the cost of enterprise.
The utility model content
Technical problem to be solved in the utility model provides a kind of when the hot environment operation, the improved tap hole of blast furnace drill bit of Wimet and frame of the bit firm welding.
The technical scheme that solves the problems of the technologies described above is:
A kind of improved tap hole of blast furnace drill bit, it comprises frame of the bit, Wimet, Wimet is welded in the groove at frame of the bit top, its improvements are, the face of weld that Wimet is relative with frame of the bit groove both sides is the inclined-plane, the angle of inclined-plane and vertical direction is 10o-12o, the top of angle is in the bottom of frame of the bit groove, the opening of angle is above groove, there is groove at the edge of the face of weld that Wimet is relative with the frame of the bit groove floor, and the bottom surface angle of groove and frame of the bit groove is 45 o-50 o.
Above-mentioned improved tap hole of blast furnace drill bit adopts the welding of GB THJ422 welding rod in the gap of inclined-plane, described Wimet both sides, bottom groove and frame of the bit groove.
Above-mentioned improved tap hole of blast furnace drill bit, described Wimet is four, is welded on respectively in the cross groove at frame of the bit top.
Usefulness of the present utility model is:
1, between Wimet both sides and bottom and the frame of the bit angle is arranged, welding back wlding is filled wherein, as long as wlding does not melt, all can not slide and come off in the Wimet upper and lower, left and right;
2, because the existence of angle provides convenience to welding again, can fast frame of the bit and Wimet firmly be sticked together when making welding;
3, adopt the welding of GB THJ422 welding rod, making Wimet and frame of the bit rapid welding is one, phenomenon does not appear snapping and bursting in the drill bit after the welding, and welding promptly saves time again soon, and cost is compared with copper alloy and also descended a lot, the welding of GB THJ422 welding rod, in use high temperature resistant degree, can once be finished when the tap hole of blast furnace opening smoothly considerably beyond the fusing point of copper alloy, and the phenomenon that does not melt and come off, solved the problem that can't resolve for many years.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the vertical view of Fig. 1.
Mark is as follows among the figure: frame of the bit 1, Wimet 2, angle 3, groove 4.
Embodiment
The utility model is basic identical with other drill bits that use at present on the overall structure, and its difference is on the syndeton of frame of the bit 1 and Wimet 2 improvement to be arranged.
Show among the figure that the utility model comprises frame of the bit 1, Wimet 2, at the top of frame of the bit 1 groove cruciferous, Wimet 2 is welded in the groove at frame of the bit 1 top.
Show among the figure, cross section from Wimet 2, the face of weld that Wimet 2 is relative with frame of the bit 2 groove both sides is the inclined-plane, the angle 3 of inclined-plane and vertical direction is 10 o-12 o, the top of angle 3 is in the bottom of frame of the bit groove, the opening of angle 3 is above groove, and promptly the base angle of Wimet 2 contacts with the base angle of frame of the bit groove, and the side of the top of Wimet 2 and frame of the bit groove is gapped.
Show among the figure that there is groove 4 at the edge of the face of weld that Wimet 2 is relative with the frame of the bit groove floor, groove 3 is 45 o-50o with the bottom surface angle of frame of the bit groove.
After adopting this structure, weld with welding material at angle 3 and groove place, welding back wlding is filled wherein, as long as wlding does not melt, all can not slide and come off in Wimet 2 upper and lower, left and right.Simultaneously, because the existence of angle 3 provides convenience to welding again, can fast frame of the bit 1 and Wimet 2 firmly be sticked together when making welding.
In order to overcome the low-melting defective of copper alloy in the prior art, the utility model adopts the welding of GB THJ422 welding rod in the gap of inclined-plane, Wimet both sides, bottom groove and frame of the bit groove, the in use high temperature resistant degree of GB THJ422 welding rod is considerably beyond the fusing point of copper alloy, the phenomenon that drill bit does not melt and comes off in use, phenomenon does not appear snapping and bursting in the drill bit after the welding, welding promptly saves time again soon, and cost is compared with copper alloy and also descended a lot.
Adopt this welded drill bit of the present utility model not to be only applicable to tap hole of blast furnace, also be applicable to other field, as: metallurgy, mine, colliery, oil recovery etc.
Claims (3)
1. improved tap hole of blast furnace drill bit, it comprises frame of the bit (1), Wimet (2), Wimet (2) is welded in the groove at frame of the bit (1) top, it is characterized in that: the face of weld that Wimet (2) is relative with frame of the bit groove both sides is the inclined-plane, the angle of inclined-plane and vertical direction (3) is 10 o-12 o, the top of angle (3) is in the bottom of frame of the bit groove, the opening of angle (3) is above groove, there is groove (4) at the edge of the face of weld that Wimet (2) is relative with the frame of the bit groove floor, and groove (4) is 45 o-50 o with the bottom surface angle of frame of the bit groove.
2. improved tap hole of blast furnace drill bit according to claim 1 is characterized in that: described Wimet (2) inclined-plane, both sides, bottom groove (4) are GB THJ422 welding rod welded seam with the gap of frame of the bit groove.
3. improved tap hole of blast furnace drill bit according to claim 2 is characterized in that: described Wimet (2) is four, is welded on respectively in the cross groove at frame of the bit (1) top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200502014U CN201990688U (en) | 2011-02-28 | 2011-02-28 | Improved drill bit of taphole drilling machine of blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200502014U CN201990688U (en) | 2011-02-28 | 2011-02-28 | Improved drill bit of taphole drilling machine of blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201990688U true CN201990688U (en) | 2011-09-28 |
Family
ID=44667182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200502014U Expired - Fee Related CN201990688U (en) | 2011-02-28 | 2011-02-28 | Improved drill bit of taphole drilling machine of blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201990688U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113523742A (en) * | 2021-07-05 | 2021-10-22 | 桂林市中锐特机械制造有限责任公司 | Manufacturing method of T-shaped wear-resistant layer drill bit for blast furnace tapping |
-
2011
- 2011-02-28 CN CN2011200502014U patent/CN201990688U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113523742A (en) * | 2021-07-05 | 2021-10-22 | 桂林市中锐特机械制造有限责任公司 | Manufacturing method of T-shaped wear-resistant layer drill bit for blast furnace tapping |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110928 Termination date: 20120228 |