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Processing technology for ceramic composite steel pipe

A composite steel pipe and processing technology, applied in the direction of pipes, rigid pipes, pipes/pipe joints/fittings, etc., can solve the problems of acid resistance, weak alkali resistance and poor inner surface density in the welding area, and achieve excellent comprehensive performance, good Wear-resistant and high-hardness effect

Inactive Publication Date: 2010-07-21
扬州金鑫管业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Steel pipe is widely used in electric power, metallurgy, coal, petroleum, chemical industry, machinery and other industries due to its good comprehensive performance, among which ceramic composite steel pipe is widely used, it has the advantages of high strength and good heat resistance, but ceramic composite steel pipe There are defects such as poor inner surface density, weak acid and alkali resistance in the welding area, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] The present invention carries out according to the following processing steps:

[0012] 1) Mixing: crush aluminum powder, iron oxide red, and quartz sand and put them into a mixer to stir evenly. The mass percentage of each material in the total is: aluminum powder 5%, iron oxide red 75%, quartz sand 20% .

[0013] 2) Centrifugal casting: put the steel pipe into the pipe mold of the pipe making machine, and use the distributor to evenly distribute the above materials in the steel pipe, install end caps at both ends of the steel pipe, and then turn on the pipe making machine to a speed of 150 revolutions per second, and at the same time Heating the steel pipe, using the heat generated by the aluminothermic reaction to melt each material, and making a ceramic composite steel pipe under the action of centrifugal force;

[0014] 3) Cooling: Cool the pipe making machine during the production process, take out the ceramic composite steel pipe from the pipe mold after stoppin...

Embodiment 2

[0017] The present invention carries out according to the following processing steps:

[0018] 1) Mixing: crush aluminum powder, iron oxide red, and quartz sand and put them into a mixer to stir evenly. The mass percentage of each material in the total is: aluminum powder 6%, iron oxide red 70%, quartz sand 24% .

[0019] 2) Centrifugal casting: put the steel pipe into the pipe mold of the pipe making machine, and use the distributor to evenly distribute the above materials in the steel pipe, install end caps at both ends of the steel pipe, and then turn on the pipe making machine to a speed of 140 revolutions per second, and at the same time Heating the steel pipe, using the heat generated by the aluminothermic reaction to melt each material, and making a ceramic composite steel pipe under the action of centrifugal force;

[0020] 3) Cooling: Cool the pipe making machine during the production process, take out the ceramic composite steel pipe from the pipe mold after stoppin...

Embodiment 3

[0023] The present invention carries out according to the following processing steps:

[0024] 1) Mixing: crush aluminum powder, iron oxide red, and quartz sand and put them into a mixer to stir evenly. The mass percentage of each material in the total is: aluminum powder 4%, iron oxide red 80%, quartz sand 16% .

[0025] 2) Centrifugal casting: put the steel pipe into the pipe mold of the pipe making machine, and use the distributor to evenly distribute the above materials in the steel pipe, install end caps at both ends of the steel pipe, and then turn on the pipe making machine to a speed of 160 circles / second, and at the same time Heating the steel pipe, using the heat generated by the aluminothermic reaction to melt each material, and making a ceramic composite steel pipe under the action of centrifugal force;

[0026] 3) Cooling: Cool the pipe making machine during the production process, take out the ceramic composite steel pipe from the pipe mold after stopping, and p...

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Abstract

The invention discloses processing technology for a ceramic composite steel pipe, and relates to the processing technology for the ceramic composite steel pipe into which a corundum layer is inserted. The processing technology is characterized in that 5 mass percent of aluminum powder, 75 mass percent of iron oxide red and 20 mass percent of quartz sand are put into an agitator for uniformly stirring. The product of the invention adopts the principle of melting reactants by using heat released by the thermit reaction and separating Al2O3 from Fe under the action of a centrifugal force; and the composite steel pipe orderly comprises a corundum ceramic (Al2O3) layer, an intermediate layer and a steel pipe layer from inside to outside. The product of the invention has the advantages of high hardness of alumina, chemical inertness, high strength and good plasticity, and compared with other pipes, the product of the invention has the remarkable characteristics of excellent comprehensive performance, and good wear-resisting, heat-resisting, anti-corrosion and thermal shock properties.

Description

technical field [0001] The invention relates to a processing technology of a ceramic composite steel pipe in which a layer of corundum is implanted in the steel pipe. Background technique [0002] Steel pipe is widely used in electric power, metallurgy, coal, petroleum, chemical industry, machinery and other industries due to its good comprehensive performance, among which ceramic composite steel pipe is widely used, it has the advantages of high strength and good heat resistance, but ceramic composite steel pipe There are defects such as poor density of the inner surface, weak acid and alkali resistance of the welding area, etc. Contents of the invention [0003] In view of the above defects, the present invention aims to provide a ceramic composite steel pipe with good comprehensive performance. [0004] Technical scheme of the present invention is: the present invention is carried out by following processing steps: [0005] 1) Mixing materials: crush aluminum powder, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B37/02F16L9/14
Inventor 金明成王剑秋朱海祥
Owner 扬州金鑫管业有限公司
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