Device for testing thermal shock stability of zirconium oxide nozzle
By designing a thermal shock stability test device for zirconia water ports, and using oxygen-acetylene gun flame to melt the surface of the water port, the problems of low efficiency and high energy consumption in the existing technology are solved, and efficient testing of zirconia water ports of various forms is achieved.
Patent Information
- Application Number
- CN202421345087.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-13
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-06-13
AI Technical Summary
The prior art cannot standardize, have low efficiency and high energy consumption thermal shock stability testing methods, and cannot adapt to zirconia water outlets of different shapes.
A test device including a base, clamping assembly and moving assembly was designed. The surface of the water port was melted by using the flame of the oxygen-acetylene gun, and the flame position and movement path were adjusted by hand-wheel screws to determine the thermal shock stability of the water port.
It realizes efficient and standardized thermal shock stability testing of zirconia water ports of various forms, improves work efficiency and simplifies the operation process.
Smart Images
Figure CN223064963U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of zirconia nozzles, in particular to a test device for the thermal shock stability of zirconia nozzles. Background Art
[0002] As is well known, a zirconia nozzle is a key component for controlling the flow during the continuous casting process of steel. Due to the extremely harsh service environment, the zirconia nozzle is required to have very good thermal shock stability. Usually, the method for testing the thermal shock stability of zirconia nozzles is the conventional water-cooling test method in the refractory industry, that is, heating the zirconia nozzle to a specified high temperature in a heating furnace, and then directly taking out the nozzle from the heating furnace and putting it into cold water, and repeating this operation until the nozzle is damaged. For zirconia nozzles, this test method has many disadvantages: 1. Since the shapes of zirconia nozzles are diverse, a thermal shock stability test device standardized in the refractory industry cannot be used, and only an ordinary heating furnace can be used for manual operation. Therefore, this test method is not very standardized; 2. It is labor-intensive, time-consuming, has high energy consumption, and the operation process is complex. Therefore, it has become a basic requirement for those skilled in the art to propose a device that can test the thermal shock stability of zirconia nozzles with various shapes. Summary of the Invention
[0003] In order to overcome the deficiencies in the background art, the utility model discloses a test device for the thermal shock stability of zirconia nozzles.
[0004] In order to achieve the above-mentioned invention purpose, the utility model adopts the following technical scheme:
[0005] A test device for the thermal shock stability of zirconia nozzles includes a base, a nozzle, a clamping assembly, and a moving assembly. A clamping assembly is fixed on one side of the upper surface of the base, and the nozzle is fixed through the clamping assembly. On the other side of the upper surface of the base, a moving assembly corresponding to the nozzle is provided. The moving assembly includes a horizontal slider, a support rod, an oxygen-acetylene torch, and a handwheel type screw B. The horizontal slider is a dovetail groove metal block and slides in the dovetail groove of the base. The lower end of the support rod is connected to the threaded hole on the upper surface of the horizontal slider through a thread. A sleeve-type vertical slider is connected to the middle of the support rod. An oxygen-acetylene torch is fixed on one side of the vertical slider, and the extension block on the other side is connected to the threaded end of the handwheel type screw B. The flame of the oxygen-acetylene torch corresponds to the nozzle.
[0006] The testing device for the thermal shock stability of the zirconia nozzle, the clamping assembly includes a nozzle support rod and a nozzle clamp. The nozzle support rod is fixedly connected to the threaded hole on one side of the upper surface of the base through the threaded section at the lower end. A round hole is provided in the middle of the nozzle support rod. There are two nozzle clamps, both of which are "convex"-shaped metal sheets. Through holes are provided on the convex parts of the two metal sheets. The screw in the through hole is inserted into the round hole of the nozzle support rod. The two metal sheets are fixed on both sides of the nozzle support rod through nuts, and the nozzle between the two metal sheets is clamped.
[0007] The testing device for the thermal shock stability of the zirconia nozzle, the base is set as a rectangular plate. A double-hole plate A is fixed on the right end surface of the base. The double-hole plate A has a screw hole and a through hole arranged at intervals up and down on a vertical plate. A bolt hole is provided on the right end surface of the base 1. The screw hole at the lower part of the double-hole plate A corresponds to the bolt hole on the right end surface of the base and is fixedly connected through a bolt. The inner end of the handwheel-type screw A passes through the through hole at the upper part of the double-hole plate A and is fixedly connected to the outer end surface of the horizontal slider. Two nuts are arranged at intervals on the bolt of the handwheel-type screw A, and the two are located on both sides of the double-hole plate A.
[0008] The testing device for the thermal shock stability of the zirconia nozzle, a double-hole plate B is fixed on the upper end surface of the support rod. The double-hole plate B is a horizontal plate with two screw holes arranged at intervals left and right. The bolt in the left screw hole of the double-hole plate B is fixed in the connection hole on the upper end surface of the support rod. A handwheel-type screw B is arranged in the screw hole on the right side of the double-hole plate B. The threaded end at the lower part of the handwheel-type screw B is connected to the screw hole on the extension block on the right side of the vertical slider.
[0009] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:
[0010] For the testing device for the thermal shock stability of the zirconia nozzle of the present utility model, by pushing the handwheel-type screw A to drive the horizontal slider, the support rod above the horizontal slider, and the oxy-acetylene torch on the support rod to move towards the nozzle, so that the high-temperature area of the oxy-acetylene flame is exactly on the surface of the nozzle. By rotating the handwheel-type screw to drive the vertical slider and the oxy-acetylene torch to move up and down, the oxy-acetylene flame moves up and down along the surface of the nozzle to form a molten line. The thermal shock stability is judged according to the phenomena that occur during the melting and baking of the nozzle by the flame. The utility model has a simple structure and convenient operation, can perform thermal shock stability tests on zirconia nozzles with various shapes, and improves work efficiency. Description of the Drawings
[0011] Figure 1 It is a structural schematic diagram of the present utility model.
[0012] In the figure: 1, base; 2, nozzle support rod; 3, nozzle clamp; 4, nozzle; 5, flame; 6, oxy-acetylene torch; 7, support rod; 8, vertical slider; 9, horizontal slider; 10, double-hole plate A; 11, handwheel type screw A; 12, double-hole plate B; 13, handwheel type screw B. Detailed implementation mode
[0013] The present utility model can be explained in detail through the following embodiments. The purpose of disclosing the present utility model is to protect all technical improvements within the scope of the present utility model.
[0014] Combined with the attached Figure 1 The test device for the thermal shock stability of the zirconia nozzle includes a base 1, a nozzle 4, a clamping assembly and a moving assembly. A clamping assembly is fixed on one side above the base 1, and the nozzle 4 is fixed through the clamping assembly. A moving assembly corresponding to the nozzle 4 is arranged on the other side above the base 1. The moving assembly includes a horizontal slider 9, a support rod 7, an oxy-acetylene torch 6 and a handwheel type screw B13. The horizontal slider 9 is a dovetail groove metal block and slides in the dovetail groove of the base 1. The lower end of the support rod 7 is connected to the threaded hole on the upper surface of the horizontal slider 9 through threads. A sleeve-type vertical slider 8 is connected to the middle of the support rod 7. An oxy-acetylene torch 6 is fixed on one side of the vertical slider 8, and the extension block on the other side is connected to the threaded end of the handwheel type screw B13. The flame 5 of the oxy-acetylene torch 6 corresponds to the nozzle 4; the clamping assembly includes a nozzle support rod 2 and a nozzle clamp 3. The nozzle support rod 2 is fixedly connected to the threaded hole on one side above the base 1 through the threaded section at the lower end. A circular hole is opened in the middle of the nozzle support rod 2. The nozzle clamp 3 is provided with two pieces, both of which are "convex"-shaped metal sheets. Through holes are provided on the convex parts of the two metal sheets. The screw in the through hole is passed through the circular hole of the nozzle support rod 2, and the two metal sheets are fixed on both sides of the nozzle support rod 2 through nuts, and the nozzle 4 between the two metal sheets is clamped.
[0015] Specifically, the base 1 is set as a rectangular plate. A double-hole plate A10 is fixed on the right end surface of the base 1. The double-hole plate A10 has a screw hole and a through hole arranged at intervals up and down on a vertical plate. A bolt hole is opened on the right end surface of the base 1. The screw hole at the lower part of the double-hole plate A10 corresponds to the bolt hole on the right end surface of the base 1 and is fixedly connected through a bolt. The inner end of the handwheel type screw A11 passes through the through hole at the upper part of the double-hole plate A10 and is fixedly connected to the outer end surface of the horizontal slider 9. Two nuts are arranged at intervals on the bolt of the handwheel type screw A11, and the two are located on both sides of the double-hole plate A10.
[0016] Specifically, a double-hole plate B12 is fixed on the upper end surface of the support rod 7. The double-hole plate B12 is a horizontal plate with two screw holes spaced apart on the left and right sides. The bolt in the screw hole on the left side of the double-hole plate B12 is fixed in the connecting hole on the upper end surface of the support rod 7. A handwheel screw B13 is provided in the screw hole on the right side of the double-hole plate B12. The threaded end of the lower part of the handwheel screw B13 is connected to the threaded hole on the right extension block of the vertical slider 8.
[0017] The test device for thermal shock stability of zirconia sprue described in the utility model is implemented. When in use, the sprue 4 is clamped by the sprue clamp 3, and the handwheel screw A11 is pushed to make the dovetail-type horizontal slider 9 move toward the sprue 4 on the base 1. At the same time, the support rod 7 fixed on the horizontal slider 9 drives the oxygen-acetylene gun 6 to move toward the sprue 4, and the distance between the flame 5 and the sprue 4 is adjusted. The flame 5 is an oxygen-acetylene flame, so that the high-temperature zone of the flame 5 is just at the surface of the sprue 4. The nuts on both sides of the double-hole plate A10 are used to fix the handwheel screw A11 so that it does not move; then the handwheel screw B13 is turned to drive the vertical slider 8 to move on the support rod 7, and at the same time drive the oxygen-acetylene gun 6 to move up and down, so that the flame 5 moves in a straight line along the surface of the sprue 4, so that the flame 5 moves along the sprue 4. The surface of the nozzle 4 moves slowly from the upper end to the lower end to form a melting line, extinguishing the flame 5 and ending the test; if the nozzle 4 explodes or cracks during the melting process of the flame 5, the test is terminated immediately, indicating that the thermal shock stability of the nozzle 4 is very poor; if the melting line is flat, smooth, without cracks or peeling, it proves that the thermal shock stability of the nozzle 4 is very good and can be used with confidence; if the melting line has cracks or peeling, it proves that the thermal shock stability of the nozzle 4 is poor and there are risks in using it; the support rod 7, nozzle support rod 2 and base 1 are all made of metal materials. If a straight line cannot be found on the outer shape of the nozzle 4, when facing a curve, the position of the oxygen-acetylene gun 6 can be adjusted by the hand-wheel screw A11 to make the high temperature area of the flame 5 on the surface of the nozzle 4.
[0018] The parts not described in detail in this utility model are prior art.
[0019] The embodiments selected in this article for the purpose of disclosing the invention of the utility model are currently considered to be suitable, but it should be understood that the utility model is intended to include all changes and improvements of the embodiments that belong to the scope of the present concept and utility model.
Claims
1. A testing device for the thermal shock stability of a zirconia nozzle, comprising a base, a nozzle, a clamping assembly and a moving assembly, characterized in that: On the upper side of the base, a clamping assembly is fixed. The water inlet is fixed through the clamping assembly. On the other side of the upper surface of the base, a moving assembly corresponding to the water inlet is provided. The moving assembly includes a horizontal slider, a support rod, an oxygen-acetylene torch, and a handwheel type screw B. The horizontal slider is a dovetail groove metal block and slides in the dovetail groove of the base. The lower end of the support rod is connected to the threaded hole on the upper surface of the horizontal slider by threading. A sleeve-type vertical slider is connected to the middle of the support rod. An oxygen-acetylene torch is fixed to one side of the vertical slider, and the extension block on the other side is connected to the threaded end of the handwheel type screw B. The flame of the oxygen-acetylene torch corresponds to the water inlet.
2. The testing device for the thermal shock stability of the zirconia nozzle according to claim 1, wherein: The clamping assembly includes a water inlet support rod and a water inlet clamp. The water inlet support rod is fixedly connected to the threaded hole on one side of the upper surface of the base through the threaded section at the lower end. A circular hole is opened in the middle of the water inlet support rod. The water inlet clamp has two pieces, both of which are "convex"-shaped metal sheets. Through holes are provided on the convex parts of the two metal sheets. The screw in the through hole passes through the circular hole of the water inlet support rod, and the two metal sheets are fixed on both sides of the water inlet support rod by nuts, and the water inlet between the two metal sheets is clamped.
3. The test device for thermal shock stability of zirconia nozzle according to claim 1, characterized in that: The base is set as a rectangular plate. A double-hole plate A is fixed on the right end surface of the base. The double-hole plate A has a screw hole and a through hole spaced up and down on a vertical plate. A bolt hole is opened on the right end surface of the base 1. The screw hole at the lower part of the double-hole plate A corresponds to the bolt hole on the right end surface of the base and is fixedly connected by a bolt. The inner end of the handwheel type screw A passes through the through hole at the upper part of the double-hole plate A and is fixedly connected to the outer end surface of the horizontal slider. Two nuts are spaced on the bolt of the handwheel type screw A, and the two are located on both sides of the double-hole plate A.
4. The testing device for the thermal shock stability of the zirconia nozzle according to claim 1, characterized in that: A double-hole plate B is fixed on the upper end surface of the support rod. The double-hole plate B is a horizontal plate with two screw holes spaced left and right. The bolt in the left screw hole of the double-hole plate B is fixed in the connection hole on the upper end surface of the support rod. A handwheel type screw B is provided in the right screw hole of the double-hole plate B. The threaded end of the lower part of the handwheel type screw B is connected to the threaded hole on the extension block on the right side of the vertical slider.