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Manufacturing method of metering nozzle with high thermal stability

A technology for sizing nozzles and stabilizing performance, which is applied in the direction of manufacturing tools, casting molten material containers, casting equipment, etc., can solve the problems of cracking and diameter expansion, and the thermal stability of sizing nozzles is not high enough, so as to increase the service life and have anti-corrosion Pollution ability, effect of avoiding cracking and diameter expansion

Inactive Publication Date: 2019-03-22
盐城紫环工业机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The thermal stability of the sizing nozzle is not high enough in the actual use process, and it is prone to cracking and diameter expansion.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The invention provides a technical solution: a method for manufacturing a sizing nozzle with high thermal stability, the method comprising the following steps:

[0026] S1: Prepare raw materials, prepare appropriate amount of partially stabilized zirconia, monoclinic zirconia, aluminum, graphite powder, binder and stabilizer in different tanks;

[0027] S2: Mixing materials, the stabilized zirconia, monoclinic zirconia, aluminum, graphite powder, binder and stabilizer prepared in S1 are quantitatively mixed and stirred, and stirred for 10 minutes until the mixture is uniform;

[0028] S3: Make the product, dry it at 100°C for 24 hours, then fire it at 1600°C for 5 hours, finally, burn the product, take it out and cool it to room temperature;

[0029] S4: Soak the product, put the product fired in S3 into the silica sol solution and soak for 5 hours, heat the silica sol solution while soaking the product in the silica sol solution, keep the temperature at 80°C, and obtai...

Embodiment 2

[0038] The invention provides a technical solution: a method for manufacturing a sizing nozzle with high thermal stability, the method comprising the following steps:

[0039] S1: Prepare raw materials, prepare appropriate amount of partially stabilized zirconia, monoclinic zirconia, aluminum, graphite powder, binder and stabilizer in different tanks;

[0040] S2: Mixing materials, the stabilized zirconia, monoclinic zirconia, aluminum, graphite powder, binder and stabilizer prepared in S1 are quantitatively mixed and stirred, and stirred for 20 minutes until the mixture is uniform;

[0041] S3: Make the product, dry it at a temperature of 100°C to 120°C for 28 hours, then fire it at 1700°C for 5 hours to 8 hours, and finally burn the product, take it out and cool it to room temperature;

[0042] S4: Soak the product, put the product fired in S3 into the silica sol solution and soak for 7 hours, heat the silica sol solution while soaking the product in the silica sol solution,...

Embodiment 3

[0051] The invention provides a technical solution: a method for manufacturing a sizing nozzle with high thermal stability, the method comprising the following steps:

[0052] S1: Prepare raw materials, prepare appropriate amount of partially stabilized zirconia, monoclinic zirconia, aluminum, graphite powder, binder and stabilizer in different tanks;

[0053] S2: Mixing materials, the stabilized zirconia, monoclinic zirconia, aluminum, graphite powder, binder and stabilizer prepared in S1 are quantitatively mixed and stirred, and stirred for 25 minutes until the mixture is uniform;

[0054]S3: Make the product, dry it at 115°C for 30 hours, then fire it at 1800°C for 7 hours, finally, burn the product, take it out and cool it to room temperature;

[0055] S4: Soak the product, put the product fired in S3 into the silica sol solution and soak for h10h, heat the silica sol solution while soaking the product in the silica sol solution, keep the temperature at 95°C, and obtain a ...

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PUM

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Abstract

The invention discloses a manufacturing method of a metering nozzle with high thermal stability. The manufacturing method comprises the following steps of S1, preparing raw materials, S2, mixing the raw materials, S3, preparing a product, S4, soaking the product, and S5, maintaining and preserving the metering nozzle. During raw material mixing, aluminum and graphite powder are added into the rawmaterials, and the aluminum and the graphite powder are high in thermal stability, so that the high thermal stability of the prepared metering nozzle is improved. During product cooling in step S3, the product is cooled slowly in a closed environment, thereby avoiding the phenomenon of cracking of the product due to air cooling and the phenomena of cracking and diameter expanding in the later period. In step S4, the product is put into silica sol to be soaked, thereby increasing the water resistance and heat resistance of the product; and the silica sol has anti-contamination capacity, improving the overall performance of the metering nozzle. In step S5, the metering nozzle is maintained and preserved, so that the metering nozzle is not liable to be contaminated and damaged before being used, the preservation time is long, and accordingly the manufacturing method is worth popularizing.

Description

technical field [0001] The invention relates to the field of manufacturing methods of sizing nozzles with high thermal stability, in particular to a manufacturing method of sizing nozzles with high thermal stability. Background technique [0002] The sizing nozzle is one of the refractory materials used in billet continuous casting, which plays a role in controlling the flow of molten steel. The uniform and stable flow of molten steel through the sizing nozzle into the crystallizer is a necessary condition to ensure the normal operation of continuous casting. Therefore, the sizing nozzle must have good corrosion resistance and thermal stability, and blockage, shedding, cracking and Expansion. [0003] The thermal stability of the sizing nozzle is not high enough in the actual use process, and it is prone to cracking and diameter expansion. [0004] For this reason, a method of manufacturing a sizing nozzle with high thermal stability is proposed to solve the above-mentione...

Claims

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Application Information

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IPC IPC(8): C04B35/482C04B35/632C04B35/63C04B35/622B22D41/54
CPCC04B35/482B22D41/54C04B35/622C04B35/63C04B35/632C04B2235/3418C04B2235/402C04B2235/425
Inventor 冯文君
Owner 盐城紫环工业机械有限公司