CN212133276U - Furnace top of walking beam furnace - Google Patents
Furnace top of walking beam furnace Download PDFInfo
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- CN212133276U CN212133276U CN202020758335.0U CN202020758335U CN212133276U CN 212133276 U CN212133276 U CN 212133276U CN 202020758335 U CN202020758335 U CN 202020758335U CN 212133276 U CN212133276 U CN 212133276U
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- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
A step-by-step heating furnace top is respectively a plastic layer and a light castable layer from inside to outside; a fiber blanket layer is arranged between the plastic layer and the light castable layer, and the fiber blanket layer is arranged outside the light castable layer. The walking beam type heating furnace has the advantages of good high-temperature heating, flexible operation, higher intelligent degree and the like, the furnace length is not limited by the steel pushing ratio, and the walking beam type heating furnace is very suitable for the requirements of the modern rolling mill on the development towards large-scale, high-speed and modernization. Good steel needs a good furnace, and the good furnace top is a foundation, so that the necessary conditions that the production yield is improved and the high and medium quality is improved by the safe and reliable heating furnace top with good heat preservation effect and long service life are provided.
Description
Technical Field
The utility model belongs to the technical field of the heating furnace, concretely relates to marching type heating furnace roof.
Background
With the increasing requirements of the processing market on bar steel products, the development of the bar steel products tends to be more and more in the directions of zero defects on the surfaces of the products, high dimensional tolerance, high precision, diversified specifications, cost and reduced process steps. Therefore, how to improve the grade of bar products and gradually develop the bar products to the direction of high technology, high quality and high added value is a problem to be overcome at first.
The walking beam type heating furnace has the advantages of good high-temperature heating, flexible operation, higher intelligent degree and the like, the furnace length is not limited by the steel pushing ratio, and the walking beam type heating furnace is very suitable for the requirements of the modern rolling mill on the development towards large-scale, high-speed and modernization. In the prior art, the furnace top of the heating furnace is usually poor in heat preservation capability, difficult to maintain in later period and high in cost, so that the necessary conditions that the furnace top of the heating furnace is good in heat preservation effect, long in service life, safe and reliable are required to be designed and developed, the production yield is improved, and the quality of high and medium grade is improved.
SUMMERY OF THE UTILITY MODEL
In order to overcome the problems of poor heat preservation capability, difficult later maintenance, high cost and the like of the furnace top of the heating furnace generally, the utility model aims to provide the stepping heating furnace top with good heat preservation effect, long service life, safety and reliability.
The technical scheme of the utility model:
a step-by-step heating furnace top is respectively a plastic layer and a light castable layer from inside to outside; a fiber blanket layer is arranged between the plastic layer and the light castable layer, and the fiber blanket layer is arranged outside the light castable layer. The thickness of the plastic layer is 230-250mm, the thickness of the fiber blanket layer is 30-50mm, the thickness of the light casting material layer is 50-60mm, and the thickness of the fiber blanket layer is 30-50 mm.
The plastic layer is integrally rammed byHas good compactness and high temperature resistance, and the chemical component is Al2O3≥36%；SiO2Less than or equal to 58 percent, good flexural strength and compressive strength under the condition of high temperature of more than or equal to 1000 ℃, and heat conductivity coefficient of less than or equal to 1.0.
Al in light castable2O3More than or equal to 20 percent, so that the heat conductivity coefficient of the material is lower than or equal to 0.21.
The main chemical component Al of the fiber blanket layer2O3+SiO2≥97；Fe2O3≤1.0，Na2O+K2O is less than or equal to 0.5, the classification temperature is 1250 ℃, and the compressive strength is more than or equal to 0.2.
The utility model has the advantages that: the multilayer heat insulation has good heat insulation effect; a fiber blanket layer is arranged between the plastic layer and the light castable layer, so that the light castable layer is convenient to solidify; the innermost layer adopts plastic material, and the subsequent maintenance is convenient.
Drawings
Fig. 1 is a schematic view of the structure of a walking beam furnace top.
In the figure: 1-plastic layer, 2-light casting material layer and 31-fiber blanket layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and embodiments.
Example 1:
a walking beam furnace top comprises a plastic layer (1) and a light castable layer (2) from inside to outside. A fiber blanket layer (31) is arranged between the plastic layer (1) and the light castable layer (2), and the fiber blanket layer (31) is arranged outside the light castable layer (2). The plastic layer (1) adopts an integral ramming method, so that the plastic layer has good compactness and high temperature resistance, and the chemical component is Al2O3=37%；SiO2=58%, has good flexural strength and compressive strength under high temperature (1000 ℃) condition, and the thermal conductivity coefficient is less than or equal to 1.0. Al in light castable2O3Is present in an amount of =20% to haveLower thermal conductivity = 0.21. The main chemical component Al of the fiber blanket layer2O3+SiO2=97；Fe2O3=1.0，Na2O+K2O =0.5, the classification temperature was 1250 ℃, and the compressive strength = 0.2.
The thickness of the plastic layer (1) is 230 mm, the thickness of the fiber blanket layer (31) is 30 mm, the total thickness of the two layers is 60mm, the thickness of the light castable layer (2) is 50mm, and the total thickness is 330 mm.
Claims (1)
1. The utility model provides a marching type heating furnace roof, is respectively from inside to outside can plastic layer, light pouring material layer, its characterized in that: a fiber blanket layer A is arranged between the plastic layer and the light castable layer, and a fiber blanket layer B is arranged outside the light castable layer; the thickness of the plastic layer is 230-250mm, the thickness of the light castable layer is 50-60mm, and the thickness of the fiber blanket layer A and the thickness of the fiber blanket layer B are both 30-50 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020758335.0U CN212133276U (en) | 2020-05-10 | 2020-05-10 | Furnace top of walking beam furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020758335.0U CN212133276U (en) | 2020-05-10 | 2020-05-10 | Furnace top of walking beam furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212133276U true CN212133276U (en) | 2020-12-11 |
Family
ID=73694385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020758335.0U Active CN212133276U (en) | 2020-05-10 | 2020-05-10 | Furnace top of walking beam furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212133276U (en) |
-
2020
- 2020-05-10 CN CN202020758335.0U patent/CN212133276U/en active Active
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