CN101189086A - Stopper rod - Google Patents
Stopper rod Download PDFInfo
- Publication number
- CN101189086A CN101189086A CNA2006800196398A CN200680019639A CN101189086A CN 101189086 A CN101189086 A CN 101189086A CN A2006800196398 A CNA2006800196398 A CN A2006800196398A CN 200680019639 A CN200680019639 A CN 200680019639A CN 101189086 A CN101189086 A CN 101189086A
- Authority
- CN
- China
- Prior art keywords
- plunger rod
- sealing device
- insert
- carrier element
- stopper rod
- 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.)
- Granted
Links
- 238000007789 sealing Methods 0.000 claims abstract description 64
- 229910052751 metal Inorganic materials 0.000 claims abstract description 18
- 239000002184 metal Substances 0.000 claims abstract description 18
- 230000000295 complement effect Effects 0.000 claims abstract description 4
- 238000012856 packing Methods 0.000 claims description 24
- 239000000919 ceramic Substances 0.000 claims description 9
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 239000011819 refractory material Substances 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 abstract description 3
- 239000010959 steel Substances 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 9
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 239000011261 inert gas Substances 0.000 description 4
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000011195 cermet Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000011214 refractory ceramic Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/14—Closures
- B22D41/16—Closures stopper-rod type, i.e. a stopper-rod being positioned downwardly through the vessel and the metal therein, for selective registry with the pouring opening
- B22D41/18—Stopper-rods therefor
- B22D41/186—Stopper-rods therefor with means for injecting a fluid into the melt
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
A stopper rod for controlling the flow of molten steel from a tundish has a metal carrier element (15a; 15b; 15c) partly received in an internal passageway (12b; 12c) of the stopper rod, the carrier element compressing sealing means (19a; 19b; 19c) between a frustoconical undersurface of a laterally enlarged portion thereof and a complementary seating surface of the stopper rod passageway, there being an insert (20; 24; 27c) threadedly engaged with one of the carrier element and stopper rod body at a position above a laterally enlarged portion of the carrier element, with further sealing means (21; 25; 25a, 25b) disposed between said insert and the carrier element. Preferably the insert is a nut (27c) screwed down onto a washer (26c) which compresses the further sealing means (25a, 25b).
Description
Technical field
The present invention relates to a kind of control example that is used for as the plunger rod of the motlten metal from container (for example funnel) to mould stream (perhaps stopper rod; Stopper rod), more preferably relate to a kind of plunger rod that is used for inert gas is supplied to the melt substance of container.
Background technology
This plunger rod is known, it moves along its y direction by the device of the external container that the liftout plunger bar placed, so that the exit opening on container base opens more or less, and plunger rod is closed opening when cooperating with container on its extreme lower position fully.Therefore the metal flow by opening is controlled.
Yet ubiquitous extreme condition has strict requirement to the material and the design of plunger rod in the processing of steel mill, and it must resist melt metal a plurality of hours.Also must be able to resist the wide variations in temperature that in casting cycle, acts on the plunger rod.In addition, be used for inert gas is incorporated under the metal melting material situation at plunger rod, not having air to arrive the inside of plunger rod and not having air to reach the metal melting material thus is important by stopper rod body and the coupling part stretched between the part of lifting device of described body, this is because air will cause the increase of oxidation, and the deterioration of steel quality.Because act on high temperature and mechanical load on the coupling part, this coupling part especially is easy to generate problem.The difference of the thermal coefficient of expansion separately between the related different materials in coupling part needs compensation or consideration especially.
Summary of the invention
The object of the present invention is to provide a kind of plunger rod of improved form.
According to the present invention, a kind of plunger rod is provided, comprise the stopper rod body of refractory material, have from first end of described body towards inner passage that its second end extends; Metal carrier members is accommodated in the described passage one end, and described carrier element is accommodated in the horizontal expansion part of passage the part of horizontal expansion, and this channel part limits seating face; And the sealing device between the horizontal expansion downside partly of described seating face and carrier element, wherein in insert and carrier and the plunger rod carries out screw-threaded engagement on the position above the horizontal expansion part of described carrier element, and other sealing device places between described insert and the carrier element.
Preferably, in use, the carrier element that is used for joint pin stopper rod and lifting device has the gas supply passageway by its extension.
Sealing device wishes it is the graphoil seal.In one embodiment, insert and carrier element carry out screw-threaded engagement.In this embodiment, other sealing device is the follower seal.In another embodiment, insert and stopper rod body are carried out screw-threaded engagement.In this embodiment, other sealing device is the graphoil seal, and described graphoil seal is preferably thick than the graphoil seal that forms described sealing device.In another embodiment, insert and ceramic insert carry out screw-threaded engagement, and described ceramic insert preferably feeds plunger rod to form its part.
Easily, sealing device is separately positioned between each complementary frusto-conical surface and described sealing ring surface of enlarged of carrier element.Up to stopper rod heats, sealing device is extruded between carrier element and stopper rod body, and the gas-tight seal in the middle of them is provided.When stopper rod heats, even begun to leak by the expansion of sealing device owing to metal carrier members, air-tightness is also kept by other sealing device.
Advantageously, in a described embodiment, the screw-threaded engagement of the complementation on insert and the carrier element.Insert is screwed on the other sealing device tightly, on the internal ring wall with the passage that radial direction seal ring affacted stopper rod body.When metal carrier members expanded, whole assembly is slippage minutely only, and power on other sealing device and air-tightness are thus kept.
In described another embodiment, insert is a collar, its can be metal or pottery, carry out screw-threaded engagement with the corresponding screw thread of the upper inner surface of inner passage in stopper rod body.This screw thread can be crushed in the passage of stopper rod body, or is provided by the ceramic insert of being pressed into of a part that forms stopper rod body.At first, collar is fastened to compress other sealing device.When metal carrier members expands, other sealing device will stand additonal pressure between carrier element that expands and restriction collar so that effective gas-tight seal to be provided.
In a preferred embodiment according to the present invention, insert be on carrier element with the form of the nut of screw thread engagement, this nut will apply the axial compressive force of described other sealing device when fastened, cause the sealing between stopper rod body and carrier element.
The nut preferably media by packing ring applies the axial compressive force of described other sealing device.Described packing ring wishes to be positioned at around the carrier element on the end of stopper rod body.Easily, packing ring is bigger than other sealing device, especially has the bigger diameter of diameter than the upper end of the inner passage in the stopper rod body, and other sealing device is accommodated in the upper end of described inner passage.Other sealing device is preferably two graphoil seals, when nut is not fastening, described sealing device is positioned at the protuberance of the described upper end of stopper rod body, and when nut is secured on the packing ring, described sealing device is pressed into the described upper end of passage vertically, so that packing ring is pressed the graphoil seal vertically.
Description of drawings
The present invention is in this mode with example, and reference will be made to the accompanying drawings, wherein:
Fig. 1 is the schematic side view of inside of upper end of the plunger rod of prior art;
Fig. 2 is for plunger rod of the present invention and figure similar Fig. 1; And
Fig. 3 is for another the figure similar to Fig. 2 of plunger rod of embodiment according to the present invention;
Fig. 4 is the figure of similar Fig. 3 of plunger rod according to another embodiment of the invention; And
Fig. 5 is the schematic cross sectional view of decomposition of the upper end of plunger rod of the present invention, and left one side of something illustrates unpressed sealing device, and right one side of something illustrates compressed sealing device.
The specific embodiment
The upper end of plunger rod of prior art that Fig. 1 is schematically illustrated to have the stopper rod body 11 of conventional refractory/ceramic material.Vertical hole 12 of circular cross section in stopper rod body 11 from its upper end to the center, extend vertically.Short path is downward from the upper open end in hole, inwardly does step to form the truncated cone shoulder that limits sealing surfaces 13.Extending downwards from this surface 13 is the circular section part of constant diameter, and described part causes the radially enlarged in hole, and ceramic insert 14 is fixed in the described hole, and described insert is fixed on the stopper rod body 11.Below this insert 14, the remainder in hole 12 have with the surface 13 and insert 14 between the identical diameter of part.Correspondingly, down to surface 13 and comprise that the topmost portion in 13 hole 12, surface is horizontal (radially) enlarged in hole 12.Insert can be metal or cermet material, be ceramic and substitute.
As shown in Figure 1, this top of extending hand-hole 12 is metallic carrier bars 15, the metallic carrier bar 15 of its upper end of 12 outsides is fixed to the lifting device that being used to of using in the container raises and reduce plunger rod in any mode easily in the hole, for example with the funnel of normal mode.Carrier pin 15 is circular cross sections, but is provided with horizontal (radially) enlarged of annular collar 16 forms, the lower end in described carrier pin 15 outer shape and hole 12 above the surface 13 and surperficial 13 self approximate match.In other words, the top of collar is columniform, and as 17, and the bottom is the frusto-conical surface 18 with truncated cone sealing surfaces 13 couplings.Below collar 16, carrier pin 15 is its normal round diameters, but this provides external screw thread on the position of insert 14, so that the engagement of bar 15 and insert 14 can make the lifting of carrier pin 15 be delivered to stopper rod body 11, so that in use promote or reduce plunger rod 10 in normal mode.As shown in Figure 1, between the frusto- conical surface 13 and 19 of correspondence, graphoil seal 19 is set.Although it is not shown, normally, it is for existing the situation of gas channel at the center of pass through carrier pin 15 of bottom be used in normal mode inert gas being conveyed into the hole 12 of stopper rod body 11, and this inert gas opening of the lower edge by plunger rod on partly usually supplies in the melt metal in the container that holds plunger rod.
The problem of prior art system as shown in Figure 1 is when plunger rod heating in use, and the pressure that the thermal expansion of carrier pin 15 causes being applied to graphoil seal 19 reduces, and causes leakage.
Embodiments of the invention design as shown in Figure 2 is used for addressing this problem.As seen from the drawings, all features of plunger rod as shown in Figure 1 are shown in Figure 2, and correspondingly indicated identical numeral, but have suffix a.For overcome Fig. 1 arrange discerned sealing problem, in Fig. 2 as seen, the insert of nut 20 forms on right upward lip-deep certain position of the cylindrical part 17 of collar 16 with carrier pin 15a screw-threaded engagement, so that, as shown in the figure, the upper surface of nut 20 is roughly concordant with the upper surface of stopper rod body 11.It between the upper surface of the column part 17 of the lower end of nut 20 and collar 16 sealing device of the form of follower seal 21 for example.Usually, even when plunger rod is not heated, sealing circle 21 also will be extruded by screwing downwards of nut 20, so that have by some radial seals shown in the arrow on the sealing ring among Fig. 2 21.Correspondingly, substitute the hole 12 of opening above the collar 16 as shown in Figure 1, this part in hole 12 is held nut 20 and sealing ring 21 as shown in the figure at this.
Correspondingly, if given nut links to each other with carrier pin 15a, for as shown in Figure 2 layout, even also be maintained when having thermal expansion at carrier pin 15a (with nut 20) by the radial seal of seal 21.Although when metalwork expanded, whole assembly is slippage minutely only, power and air-tightness on the sealing ring 21 are kept, and also are like this even exist when leaking at graphoil seal 19a.The material that nut 20 can be ceramic, ceramic-metallic or potential any other heat resistanceheat resistant, keep shape and alternative metals, and seal 19a with sealing ring 21 can be and described these different materials.Though not shown in Fig. 1 or Fig. 2, should be appreciated that to be similar to known plunger rod, some restraint devices on stopper rod body is pushed up can be set at this end of extending stopper rod body carrier pin part around.This device will be described in conjunction with Fig. 3, and should be appreciated that these can be applied on the layout of Fig. 2 in the same manner.
Embodiments of the invention as shown in Figure 3 are similar to embodiment as shown in Figure 2 in many aspects, and identical parts will be marked with identical numeral, but have prefix b.Correspondingly, can see that plunger rod as shown in Figure 3 comprises the refractory material/ceramic plunger body of rod 11b that has the vertical hole 12b that extends through from its open upper end.Upward horizontal (radially) enlarged of this hole 12b forms with the seating face 13b of frusto-conical form, and below the 13b of this surface, separate, fixing insert is pressed in the material of described body 11, the external screw thread end face of the carrier pin 15b of metal and described fixedly insert 14b engagement will be so that the lifting of carrier pin or reduction will cause plunger rod corresponding in its container to promote accordingly or reduce.
The carrier pin 15b that is preferably metal has the center gas path 22 that extends from wherein.Outer setting is by by last cylindrical part 17b with have the collar 16b that the bottom of truncated cone lower surface 18b is formed.As the layout of Fig. 2, the seal 19b that is preferably the graphoil seal is trapped between frusto-conical surface 18b and the seating face 13b, so that gas-tight seal to be provided when plunger rod is not heated.
For example, screw thread 23 is by for example pushing the inner surface on the top that is provided to hole 12b, and carry out screw-threaded engagement with the insert and the screw thread 23 of annular collar 24 or equivalent elements form, as shown in the figure, between the outer cylinder surface of the inner periphery of collar and carrier pin 15b, there is radial clearance.This is opposite with being provided with of Fig. 2, and wherein, this radial clearance can be set at the outer surface of nut 20 and hold between the inner periphery in hole of nut.
As can see from Figure 3, be limited in the lower surface of collar 24 and collar 16b towards being thick graphoil seal 25 between the last top surface, the inner surface of described seal 25 sealings hole 12b under the female thread portion on it.
Collar 24 is screwed to downwards on the seal 25, and described seal 25 is pressurized thus.Correspondingly, when plunger rod was not heated, by seal 19b with by seal 25 both sealings, these two kinds of sealing rings were under pressure.Yet when plunger rod is heated and carrier pin 15b when expanding, seal 19b may reason expands and reduces its compression and begin to leak with normal mode in carrier pin 15b.But, by the last seal 19b of the fixing collar that is screwed into 24 restrictions will stand to expand the pressure that adds between the collar 24 of carrier pin 15b and reservation, so that effective gas-tight seal to be provided.Fig. 3 illustrate on the top of stopper rod body 11b, the conventional packing ring 26 on carrier pin 15b, this packing ring is held down on the top of stopper rod body by the nut 27 that is threadingly attached on the carrier pin 15b, and described packing ring and nut provide conventional locking on the stopper rod body top.
The favourable part of believing layout as shown in Figure 3 is that the power on the seal 25 will increase along with the expansion of metalwork.In some cases, it may be essential that plunger externally is tied, to overcome owing to forming any problem that screw thread was caused to the refractory material of stopper rod body.
Any such problem of the refractory material formation screw thread of stopper rod body is overcome by the embodiment of Fig. 4, and the screw thread 23a that wherein is used for the engagement of collar 24 is provided to form its part by the ceramic insert 28 that is pressed into stopper rod body jointly.As shown in the figure, the top of seal 25 is accommodated in the non-threaded part of bottom of insert 28.
Correspondingly, for each embodiment shown in Fig. 2,3 and 4, but the identical thermal expansion/sealing problem of the plunger rod that exists in the prior art overcomes with simple effective and efficient manner.
Plunger rod of the present invention as shown in Figure 5 is similar to plunger rod as shown in Figure 3 in many aspects, described plunger rod has the stopper rod body 11c of refractory/ceramic material of the circle cross-section hole 12c of the longitudinal extension that has the center, and described hole 12c in use is positioned at the end upper shed of the plunger rod of the top.Upward horizontal (radially) enlarged of this of hole 12c forms with the seating face 13c of frusto-conical form, and under this surface, separate, (pottery) fixedly insert 14c is squeezed in the material of described body 11c, the preferable alloy carrier element of bar 15c form and described fixedly insert 14c engagement are so that the lifting of carrier pin or reduction are with the lifting or the reduction of the correspondence of the plunger rod in its container.
On collar 16c, the part of the carrier element at least of the outside of hole 12c be have as 28 externally threaded.As the embodiment of Fig. 3, conventional packing ring 26c is accommodated on the carrier element of insert of the routine that has nut 27c form, also as shown in the embodiments of figure 3, with screw thread 28 engagements, with when nut is fastened, to the downward application of force of packing ring.The diameter of packing ring is more much bigger than the diameter of the hole 12c on the top of stopper rod body.
Place around the carrier pin 15c and be other sealing device with the form of two graphoil seal 25a and 25b by supporting of collar 16c towards last top annular surface.When these seals axially not during pressurized, last seal stands on the upper end of stopper rod body.This left-hand side at figure illustrates.Here, nut 27c is the state that relaxes, and making does not have power to be applied on the packing ring 26c by nut.Have only the weight of packing ring to act on the seal, but do not compress axially them.Therefore, because they are not by radial compression, the effective seal that between carrier pin and stopper rod body, does not produce by them.
Yet, if nut 21c is fastened now, shown in the right-hand side of figure, so its move down the screw thread 28 of carrier pin and force packing ring 26c axially to get off squeeze sealing member 25a, 25b to the position shown in the right-hand side, the top of packing ring and stopper rod body engagement.The axial compression of seal makes them be radially expanded and form gas-tight seal (as shown in the figure) between carrier pin and stopper rod body.
Should be appreciated that in optional embodiment packing ring can be adjusted size with in the upper end that is accommodated in hole 12c, and therefore when its vertically when squeeze sealing member 25a, 25b, be accommodated in wherein at least in part.In another embodiment, the insert (for example nut 27c) that is threaded on the carrier pin also can be accommodated among the 12c of hole at least in part, and is squeezed on the packing ring downwards.In other words, described layout can be similar to the layout of Fig. 2, but packing ring is increased between insert and the other sealing device.In any embodiment, other sealing device can be the seal of single seal or any suitable number.For these optional embodiments, for sealing part or one or more a plurality of seal, not having certainly must be when not being squeezed upright (stand proud).
Claims (25)
1. plunger rod comprises: the stopper rod body of refractory material has from first end of described body towards inner passage that its second end extends; Metal carrier members is accommodated in the described passage one end, and described carrier element has the horizontal expansion part in the horizontal expansion part that is contained in passage, and this channel part limits seating face; And the sealing device between the horizontal expansion downside partly of described seating face and carrier element, wherein screw-threaded engagement is carried out in the position of in insert and carrier element and the plunger rod on the horizontal expansion part of described carrier element, and other sealing device is arranged between described insert and the carrier element.
2. plunger rod according to claim 1, wherein said insert is the form of carrying out the nut of screw-threaded engagement with carrier element, when fastened, described nut applies the axial compression of described other sealing device, causes the sealing between stopper rod body and carrier element.
3. plunger rod according to claim 2, the wherein said nut media by packing ring applies the axial compression of described other sealing device.
4. plunger rod according to claim 3, wherein said packing ring be positioned on the end of stopper rod body carrier element around.
5. according to claim 3 or 4 described plunger rods, wherein said packing ring is bigger than other sealing device.
6. plunger rod according to claim 5, the diameter of wherein said packing ring are greater than the diameter of the upper end of the inner passage in stopper rod body, and wherein said other sealing device is accommodated in the described upper end.
7. according to each described plunger rod in the claim 3 to 6, wherein said other sealing device is two graphoil seals, when nut is not fastening, described sealing device is positioned at the described upper end of stopper rod body, and when nut is secured on the packing ring, be pressed into the described upper end of passage vertically, so that packing ring pushes the graphoil seal vertically.
8. according to each described plunger rod in the claim 1 to 7, wherein said other sealing device comprises three independently graphoil seals.
9. according to each described plunger rod in the claim 1 to 8, the described carrier element that wherein in use is used for joint pin stopper rod and lifting has the gas supply source by its extension.
10. according to each described plunger rod in the claim 1 to 9, wherein said other sealing device is a graphoil seal.
11. plunger rod according to claim 1, wherein said insert and carrier element carry out screw-threaded engagement.
12. plunger rod according to claim 11, wherein said other sealing device is the follower seal.
13. plunger rod according to claim 1, wherein said insert and stopper rod body are carried out screw-threaded engagement.
14. plunger rod according to claim 13, wherein said other sealing device are a graphoil seal.
15. plunger rod according to claim 14, wherein said graphoil seal is thicker than the seal that forms sealing device.
16. plunger rod according to claim 1, wherein said insert and ceramic insert carry out screw-threaded engagement.
17. plunger rod according to claim 16, wherein said ceramic insert are pressed into plunger rod to form its part.
18. according to each described plunger rod in the claim 1 to 17, wherein said sealing device is set between each complementary frusto-conical surface and described seating face of enlarged of carrier element.
19. plunger rod according to claim 18, wherein up to stopper rod heats, sealing device is extruded between carrier element and stopper rod body, and provides gas-tight seal betwixt.
20. plunger rod according to claim 11, the complementary threads engagement on wherein said insert and the carrier element.
21. plunger rod according to claim 20, wherein said insert is screwed to downwards on the other sealing device tightly, applies radial seal with the internal ring wall to the passage of stopper rod body.
22. plunger rod according to claim 13, wherein said insert is a collar.
23. plunger rod according to claim 22, wherein said collar be metal or pottery, the corresponding screw thread on the upper inner surface of the inner passage in described collar and the stopper rod body carries out screw-threaded engagement.
24. plunger rod according to claim 23, wherein said screw thread is crushed in the passage of stopper rod body.
25. plunger rod according to claim 24, wherein said screw thread provides by the insert formation part that is pressed into of stopper rod body.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0511202A GB0511202D0 (en) | 2005-06-02 | 2005-06-02 | Stopper rod |
| GB0511202.4 | 2005-06-02 | ||
| GB0523894A GB0523894D0 (en) | 2005-11-24 | 2005-11-24 | Stopper rod |
| GB0523894.4 | 2005-11-24 | ||
| PCT/GB2006/001991 WO2006129091A2 (en) | 2005-06-02 | 2006-06-01 | Stopper rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101189086A true CN101189086A (en) | 2008-05-28 |
| CN101189086B CN101189086B (en) | 2012-09-26 |
Family
ID=34834988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006800196398A Expired - Fee Related CN101189086B (en) | 2005-06-02 | 2006-06-01 | Stopper rod |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101189086B (en) |
| GB (1) | GB0511202D0 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103889618A (en) * | 2012-04-16 | 2014-06-25 | 里弗雷克特里知识产权两合公司 | Ceramic refractory stopper |
| CN109513911A (en) * | 2018-12-24 | 2019-03-26 | 中冶陕压重工设备有限公司 | A kind of casting device of Split type multipurpose |
| CN110653347A (en) * | 2019-10-31 | 2020-01-07 | 广东工业大学 | Plugging device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4946083A (en) * | 1988-12-29 | 1990-08-07 | Vesuvius Crucible Company | One-piece stopper rod |
| DE4040189C1 (en) * | 1990-12-15 | 1992-01-02 | Didier-Werke Ag, 6200 Wiesbaden, De | Ceramic plug for outlet from metallurgical vessel - has supporting pipe with annular space to form sealing face, and nut is screwed onto it through which gas is delivered |
| DE9109532U1 (en) * | 1991-08-01 | 1991-10-10 | Radex-Heraklith Industriebeteiligungs AG, Wien | Gas blowing plug |
| TR200101360T2 (en) * | 1998-11-20 | 2001-10-22 | Vesuvius Crucible Company | Stop bar |
-
2005
- 2005-06-02 GB GB0511202A patent/GB0511202D0/en not_active Ceased
-
2006
- 2006-06-01 CN CN2006800196398A patent/CN101189086B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103889618A (en) * | 2012-04-16 | 2014-06-25 | 里弗雷克特里知识产权两合公司 | Ceramic refractory stopper |
| CN103889618B (en) * | 2012-04-16 | 2016-02-03 | 里弗雷克特里知识产权两合公司 | Ceramic fire resistant plug |
| CN109513911A (en) * | 2018-12-24 | 2019-03-26 | 中冶陕压重工设备有限公司 | A kind of casting device of Split type multipurpose |
| CN110653347A (en) * | 2019-10-31 | 2020-01-07 | 广东工业大学 | Plugging device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101189086B (en) | 2012-09-26 |
| GB0511202D0 (en) | 2005-07-06 |
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