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Anti-corrosion, high-temperature-resisting and wear-resisting cast pipe

A technology for high-temperature and wear-resistant pipes, applied in anti-corrosion coatings, pipeline anti-corrosion/anti-rust protection, pipes, etc. Anti-friction function, low production cost, strong resistance to organic solvents

Active Publication Date: 2013-08-28
WENZHOU FUCHENG CONSTR ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] However, anti-corrosion coatings in the prior art are usually difficult to balance water resistance, anti-fouling effect, and high temperature resistance

Method used

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  • Anti-corrosion, high-temperature-resisting and wear-resisting cast pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] A) Preparation of wear-resistant pipe body

[0062] 1) To obtain materials, select raw materials with the following chemical composition weight percentages:

[0063] C: 1.6%, V: 4.5%,

[0064] W: 9.1%, Mo: 7.6%,

[0065] Cr: 3.8%, RE: 0.15%,

[0066] Mn: 0.7%, Si: 0.05%,

[0067] B: 0.02%, Al: 0.2%,

[0068] Nb: 0.08%, Ni: 0.1%,

[0069] The balance is Fe and trace unavoidable impurities;

[0070] 2) Mix and heat ordinary steel scrap, micro-carbon ferrochromium, ferroniobium, ferronickel, ferrotungsten, ferromolybdenum, ferrochromium, ferroniobium, ferronickel and ferromanganese, add carbon with pig iron or graphite, mix and heat and melt into molten steel After the molten steel is melted, ferrosilicon is added for pre-deoxidation;

[0071] 3) According to the distribution ratio of raw materials, adjust the composition in front of the furnace and raise the temperature to 1580°C, then add aluminum blocks for final deoxidation, and then leave the furnace;

[0072]...

Embodiment 2

[0095] A) Preparation of wear-resistant pipe body

[0096] 1) To obtain materials, select raw materials with the following chemical composition weight percentages:

[0097] C: 2.7%, V: 6.0%,

[0098] W: 6.9%, Mo: 5.3%,

[0099] Cr: 5.4%, RE: 0.23%,

[0100] Mn: 0.6%, Si: 0.08%,

[0101] B: 0.01%, Al: 0.5%,

[0102] Nb: 1.1%, Ni: 0.2%,

[0103] The balance is Fe and trace unavoidable impurities;

[0104] 2) Mix and heat ordinary steel scrap, micro-carbon ferrochromium, ferroniobium, ferronickel, ferrotungsten, ferromolybdenum, ferrochromium, ferroniobium, ferronickel and ferromanganese, add carbon with pig iron or graphite, mix and heat and melt into molten steel After the molten steel is melted, ferrosilicon is added for pre-deoxidation;

[0105]3) According to the distribution ratio of raw materials, adjust the composition in front of the furnace and raise the temperature to 1600°C, then add aluminum blocks for final deoxidation, and then leave the furnace;

[0106] 4...

Embodiment 3

[0129] A) Preparation of wear-resistant pipe body

[0130] 1) To obtain materials, select raw materials with the following chemical composition weight percentages:

[0131] C: 3.7%, V: 8.5%,

[0132] W: 3.2%, Mo: 2.4%,

[0133] Cr: 8.9%, RE: 0.4%,

[0134] Mn: 0.3%, Si: 1.0%,

[0135] B: 0.01%, Al: 0.8%,

[0136] Nb: 2.4%, Ni: 0.3%,

[0137] The balance is Fe and trace unavoidable impurities;

[0138] 2) Mix and heat ordinary steel scrap, micro-carbon ferrochromium, ferroniobium, ferronickel, ferrotungsten, ferromolybdenum, ferrochromium, ferroniobium, ferronickel and ferromanganese, add carbon with pig iron or graphite, mix and heat and melt into molten steel After the molten steel is melted, ferrosilicon is added for pre-deoxidation;

[0139] 3) According to the distribution ratio of raw materials, adjust the composition in front of the furnace and raise the temperature to 1630°C, then add aluminum blocks for final deoxidation, and then leave the furnace;

[0140] 4)...

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Abstract

The invention relates to an anti-corrosion, high-temperature-resisting and wear-resisting cast pipe. A wear-resisting pipeline body is manufactured by means of centrifugal casting; after the steps of quenching, high-temperature tempering, solid solution strengthening heat treatment and two times of tempering dispersion hardening heat treatment, the inner wall of the pipeline body is coated with a water glass nanometer composite coating configured by a test; and then, the coating is cooled after being cured at a high temperature, so that a high-temperature-oxidation resisting anti-corrosion coating inner layer is obtained. The manufactured metal pipeline has high hardness and high wear-resisting performance. The anti-corrosion coating has excellent water-resisting performance, an excellent antifouling effect and good high-temperature-resisting performance.

Description

technical field [0001] The invention relates to a pipe, in particular to an anti-corrosion, high-temperature, wear-resistant cast pipe. Background technique [0002] There are three main forms of material failure: fracture, corrosion, and wear. Although unlike the other two forms, material wear rarely causes catastrophic damage to metal workpieces, but the economic losses it causes are quite staggering. According to statistics, about 75%-80% of the failed mechanical parts are caused by metal wear. About 30%-50% of the energy supplied to the machine is consumed in the process of friction and wear. Parts wear out After that, it will not only affect the use efficiency of machinery and equipment, but also consume a lot of manpower and material resources to replace parts and repair equipment. The economic losses caused by wear and tear are about 120 billion US dollars per year in the United States and about 50 billion marks per year in Germany. According to 2005 According to st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L9/02F16L58/04C22C37/10C21D9/08C21D1/25C21D1/18C09D1/02C09D5/08C09D7/12
Inventor 王满玉
Owner WENZHOU FUCHENG CONSTR ENG CO LTD
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