Ladle upper nozzle brick repair apparatus
Technical field
The utility model relates to steel-making continuous casting field, and is particularly related to a kind of ladle upper nozzle brick repair apparatus.
Background technology
Ladle is in operation process, and molten steel is from ladle to continuous casting, and molten steel is to flow to tundish through upper nozzle brick in ladle.Ladle upper nozzle brick in use internal diameter can produce reaming phenomenon, and when certain value is expanded in filling pipe end internal diameter aperture to, upper nozzle brick must be changed.
During replacing, must under ladle red heat state, carry out, ladle, under red heat state, is got upper nozzle brick, and then cleaning upper nozzle brick, the last upper nozzle brick of installation code again.Renewal process is complex procedures not only, and labour intensity is larger, and whole upper saliva brick all will change, and upper nozzle brick consumption is large.
Utility model content
The problem that cost consumption is large and labour intensity is large that the utility model brings because service life is low in order to overcome existing upper nozzle brick, provides a kind of ladle upper nozzle brick repair apparatus.
To achieve these goals, the utility model provides a kind of ladle upper nozzle brick repair apparatus, comprises fixture, sleeve brick and corundum chamotte.Wherein fixture comprises base, inner membrance, centration axis.Base is in the form of annular discs, and the center of base has a locating hole.Inner membrance is hollow columnar, fixes with base, and the axis of inner membrance and the axis of locating hole coincide, and the external diameter of internal mold is greater than the diameter of locating hole.Centration axis is column, and the diameter of centration axis equals the diameter of locating hole, and centration axis is fixed on base through internal mold and locating hole.Sleeve brick is hollow columnar, the top of sleeve brick lateral wall has a spigot surface, the material of sleeve brick and production technology are all identical with normal ladle upper nozzle brick, and the internal diameter of sleeve brick is not less than the external diameter of internal mold, the external diameter of sleeve brick is not more than the bottom internal diameter of saliva brick on ladle, and the height of sleeve brick is less than the height of inner membrance, sleeve brick coaxially passes centration axis and inner membrance and is fixed on base.The sidewall and the lateral wall that is exposed to the inner membrance outside sleeve brick of corundum chamotte parcel sleeve brick.
In the utility model one embodiment, sleeve brick internal diameter equals internal mold external diameter, and equals the internal diameter at upper nozzle brick top.
In the utility model one embodiment, the sidewall thickness of sleeve brick is 15 millimeters~20 millimeters.
In the utility model one embodiment, the angle between spigot surface and inner membrance axis is 3 degree~15 degree.
In the utility model one embodiment, the length of centration axis is greater than the height of upper nozzle brick.
In the utility model one embodiment, the external diameter of base is greater than sleeve brick bottom external diameter, is less than the bottom external diameter of ladle upper nozzle brick.
In the utility model one embodiment, utilize saliva brick on the ladle that described ladle upper nozzle brick repair apparatus repairs, its internal diameter increases from the top to the bottom gradually.
In the utility model one embodiment, utilize the bottom internal diameter of saliva brick on the ladle that described ladle upper nozzle brick repair apparatus repairs larger more than 20 millimeters than standard upper nozzle brick internal diameter.
In sum, the ladle upper nozzle brick repair apparatus that the utility model provides, compared with prior art there is following beneficial effect: the fixture and the sleeve brick that by setting, comprise base, internal mold and centration axis, sleeve brick is set in the lateral wall of internal mold, and fixture plays to sleeve brick the fixing effect of supporting.At the sidewall of sleeve brick and be exposed on the lateral wall of the inner membrance outside sleeve brick and smear corundum chamotte, the bottom of after having smeared, sleeve brick being inserted in to the upper nozzle brick that reaming occurs, diminishes the bottom internal diameter of upper nozzle brick, thereby can continue to use.Upper nozzle brick after utilizing this ladle upper nozzle repair apparatus to reaming is repaired, and without removing whole upper nozzle brick, thereby increases the service life of having gone up nozzle brick, has also just reduced the use cost of upper nozzle brick and replacing person's working strength accordingly.Further, because sleeve brick material is identical with normal upper nozzle brick with production technology, serviceability is also close, thereby the upper nozzle brick increasing after sleeve brick can normally move.
In addition, because the internal diameter of sleeve brick equals the top internal diameter that adventitia internal diameter also equals upper nozzle brick, the upper nozzle brick after increasing sleeve brick, its top internal diameter and bottom internal diameter will equate, its whole internal structure is close with original state, has greatly increased the service life of upper nozzle brick.
For above-mentioned and other objects, features and advantages of the present utility model can be become apparent, preferred embodiment cited below particularly, and coordinate accompanying drawing, be described in detail below.
Accompanying drawing explanation
Figure 1 shows that the cross-sectional view of the ladle upper nozzle brick of standard.
Figure 2 shows that the cross-sectional view of the ladle upper nozzle repair apparatus that the utility model one embodiment provides.
Figure 3 shows that the ladle upper nozzle repair apparatus shown in Fig. 1 is applied to the cross-sectional view of the ladle upper nozzle brick after reaming.
The specific embodiment
Figure 1 shows that the cross-sectional view of the ladle upper nozzle brick of standard.Figure 2 shows that the cross-sectional view of the ladle upper nozzle repair apparatus that the utility model one embodiment provides.Figure 3 shows that the ladle upper nozzle repair apparatus shown in Fig. 1 is applied to the cross-sectional view of the ladle upper nozzle brick after reaming.See also Fig. 1 to Fig. 3.
The ladle upper nozzle brick repair apparatus that the utility model provides, comprises fixture 1, sleeve brick 2 and corundum chamotte 3.Wherein fixture 1 comprises base 11, inner membrance 12, centration axis 13.Base 11 is in the form of annular discs, and base 11 center has a locating hole 111.Inner membrance 12 is hollow columnar, and fixing with base 11, the axis of the axis of inner membrance 12 and locating hole 111 coincides, and the external diameter of internal mold 12 is greater than the diameter of locating hole 111.Centration axis 13 is column, and the diameter of centration axis 13 equals the diameter of locating hole 111, and centration axis 13 is fixed on base 11 through internal mold 12 and locating hole 111.Sleeve brick 2 is hollow columnar, and the top of sleeve brick 2 lateral walls has a spigot surface 21.The material of sleeve brick 2 and production technology are all identical with normal ladle upper nozzle brick 4, and the internal diameter of sleeve brick 2 is not less than the external diameter of internal mold 12, and the external diameter of sleeve brick 2 is not more than the bottom external diameter of saliva brick 4 on ladle.And the height of sleeve brick 2 is less than the height of inner membrance 12, sleeve brick 2 is coaxial to be passed centration axis 13 and inner membrance 12 and is fixed on base 11.The sidewall and the lateral wall that is exposed to the inner membrance 12 outside sleeve brick 2 of corundum chamotte 3 parcel sleeve bricks 2.
On the ladle below the present embodiment being provided, the specific works principle of saliva brick repair apparatus is described in further detail: as shown in Figure 1, the ladle upper nozzle brick 4 of standard, its top internal diameter equates with bottom internal diameter.Yet along with the lengthening of service time, there is reaming phenomenon in the bottom of upper nozzle brick 4, this will have a strong impact on use, existing way is that whole upper nozzle brick 4 is changed, and not only changes complex procedures, and whole upper nozzle brick 4 replace the use cost that has greatly strengthened upper nozzle brick.
On the ladle that the present embodiment provides there is reaming at upper nozzle brick 4 in saliva brick repair apparatus, and especially bottom internal diameter is than top internal diameter large 20 millimeters when above, first, sleeve brick 2 is coaxially inserted in to fixture 1.Then at the sidewall of sleeve brick 2 and be exposed on the lateral wall of the inner membrance 12 outside sleeve brick 2 and smear corundum chamotte 3, after having smeared, sleeve brick 2 is inserted in to the bottom of the upper nozzle brick 4 that reaming occurs.Finally by fixture 1 demoulding, thereby the bottom internal diameter of upper nozzle brick 4 is diminished, can continue to use.In the present embodiment, sleeve brick 2 internal diameters equal internal mold 12 external diameters, and equal the internal diameter at upper nozzle brick 4 tops.And according to the reaming angle of upper nozzle brick 4, the height of inner membrance 12 is set, makes after repairing, the internal diameter of upper nozzle brick 4 is all consistent from the top to the bottom.The structure of structure and initial upper nozzle brick 4 is close, has greatly increased the service life of upper nozzle brick 4.Yet the utility model is not limited in any way this.
In the present embodiment, utilizing saliva brick on the ladle that described ladle upper nozzle brick repair apparatus repairs is the upper nozzle brick 4 occurring after reaming.Yet the utility model is not limited in any way this.In other embodiment, so long as the repairing of the upper nozzle brick that internal diameter increases from the top to the bottom gradually all can be used saliva brick repair apparatus on this ladle, the repairing of the upper nozzle brick increasing gradually to bottom as top that fault in production produced.
Because the outside portion of sleeve brick 2 is coated with corundum chamotte, when sleeve brick 2 is inserted in upper nozzle brick 4 bottom, sleeve brick 2 can be subject to the pressure from upper nozzle brick 4 sidewalls, and in order to guarantee that sleeve brick 2 keeps complete under this pressure, the sidewall thickness that sleeve brick 2 is set is 15 millimeters~20 millimeters.In the present embodiment, the sidewall thickness that sleeve brick is set is 18 millimeters, guaranteeing to have under the prerequisite of enough compression strength, reduces the manufacturing cost of sleeve brick 2.
For better making sleeve brick 2 enter the bottom internal diameter of upper nozzle brick 4, at the upper side wall of sleeve brick 2, spigot surface 21 is set.Angle between the axis of spigot surface 21 and inner membrance 13 (becoming guide angle) is 3 degree~15 degree.Because the internal diameter of sleeve brick 2 is all identical from top to bottom, thereby guide angle is larger, and guide effect is better, but the sidewall thickness at corresponding sleeve brick 2 tops will be thinner, and the pressure can bear also will be less, also more chipping.Therefore,, in the present embodiment, the angle arranging between the axis of spigot surface 21 and inner membrance 13 is 9 degree.
In the present embodiment, the length of centration axis 13 is greater than the height of upper nozzle brick 4, and the top of centration axis 13 is higher than the bottom at upper nozzle brick.When fixture 1 demoulding, apply External Force Acting in the top of centration axis 13, facilitate fixture 1 demoulding.
In the present embodiment, the external diameter of base 11 is greater than sleeve brick bottom external diameter, is less than the bottom external diameter of ladle upper nozzle brick 4.When sleeve brick 2 is inserted in the bottom of upper nozzle brick 4, base 11 not only can be fixed sleeve brick 2, and base 11 has also determined that sleeve brick 2 bottom end faces are parallel with ladle upper nozzle brick bottom end face simultaneously.
In sum, the ladle upper nozzle brick repair apparatus that the utility model provides, compared with prior art there is following beneficial effect: the fixture 1 and the sleeve brick 2 that by setting, comprise base 11, internal mold 12 and centration axis 13, sleeve brick 2 is set in the lateral wall of internal mold 12, and 1 pair of sleeve brick 2 of fixture plays the fixing effect of supporting.At the sidewall of sleeve brick 2 and be exposed on the lateral wall of the inner membrance 12 outside sleeve brick 2 and smear corundum chamotte 3, after having smeared, sleeve brick 2 is inserted in to the bottom of the upper nozzle brick 4 that reaming occurs, the bottom internal diameter of upper nozzle brick 4 is diminished, thereby can continue to use.Upper nozzle brick after utilizing this ladle upper nozzle repair apparatus to reaming is repaired, and without removing whole upper nozzle brick, thereby increases the service life of having gone up nozzle brick 4, has also just reduced the use cost of upper nozzle brick 4 and replacing person's working strength accordingly.Further, because sleeve brick 2 materials are identical with normal upper nozzle brick 4 with production technology, serviceability is also close, thereby the upper nozzle brick 4 increasing after sleeve brick 2 can normally move.
In addition, because the internal diameter of sleeve brick 2 equals the top internal diameter that adventitia 12 internal diameters also equal upper nozzle brick 4, the upper nozzle brick after increasing sleeve brick 2, its top internal diameter and bottom internal diameter will equate, and its whole internal structure is close with original state, greatly increased the service life of upper nozzle brick 4.
Although the utility model is disclosed as above by preferred embodiment; yet not in order to limit the utility model; anyly know this skill person; within not departing from spirit and scope of the present utility model; can do a little change and retouching, therefore protection domain of the present utility model is when being as the criterion depending on claims scope required for protection.