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Preparation method of anti-corrosion high-temperature-resistant wear-resistant casting pipe

A high-temperature-resistant and wear-resistant pipeline technology, applied in anti-corrosion coatings, manufacturing tools, heat treatment equipment, etc., can solve problems such as inappropriateness, and achieve the effects of improving work efficiency, low production costs, and strong resistance to organic solvents

Active Publication Date: 2015-05-27
JIANGSU JINSHENGYUAN SPECIAL VALVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing commonly used anti-corrosion coatings include: epoxy resin coatings, polyurethane coatings, phosphorus flake resin coatings, inorganic zinc-rich coatings, etc., but because these anti-corrosion coatings usually use organic polymers as substrates, they are not suitable for high temperature or high corrosion environments. used in

Method used

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  • Preparation method of anti-corrosion high-temperature-resistant wear-resistant casting pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] A) Preparation of wear-resistant pipe body

[0058] 1) To obtain materials, select raw materials with the following chemical composition weight percentages:

[0059] C: 1.6%, V: 4.5%,

[0060] W: 9.1%, Mo: 7.6%,

[0061] Cr: 3.8%, RE: 0.15%,

[0062] Mn: 0.7%, Si: 0.05%,

[0063] B: 0.02%, Al: 0.2%,

[0064] Nb: 0.08%, Ni: 0.1%,

[0065] The balance is Fe and trace unavoidable impurities;

[0066] 2) Mix and heat ordinary steel scrap, micro-carbon ferrochrome, ferroniobium, ferronickel, ferrotungsten, ferromolybdenum, ferrochrome and ferromanganese, add carbon with pig iron or graphite, mix and heat to melt into molten steel, and add the molten steel after it is melted Ferrosilicon for pre-deoxidation;

[0067] 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;

[0068] 4) Put the rare earth ferrosi...

Embodiment 2

[0090] A) Preparation of wear-resistant pipe body

[0091] 1) To obtain materials, select raw materials with the following chemical composition weight percentages:

[0092] C: 2.7%, V: 6.0%,

[0093] W: 6.9%, Mo: 5.3%,

[0094] Cr: 5.4%, RE: 0.23%,

[0095] Mn: 0.6%, Si: 0.08%,

[0096] B: 0.01%, Al: 0.5%,

[0097] Nb: 1.1%, Ni: 0.2%,

[0098] The balance is Fe and trace unavoidable impurities;

[0099] 2) Mix and heat ordinary steel scrap, micro-carbon ferrochrome, ferroniobium, ferronickel, ferrotungsten, ferromolybdenum, ferrochrome and ferromanganese, add carbon with pig iron or graphite, mix and heat to melt into molten steel, and add the molten steel after it is melted Ferrosilicon for pre-deoxidation;

[0100] 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;

[0101] 4) Put the rare earth ferrosil...

Embodiment 3

[0123] A) Preparation of wear-resistant pipe body

[0124] 1) To obtain materials, select raw materials with the following chemical composition weight percentages:

[0125] C: 3.7%, V: 8.5%,

[0126] W: 3.2%, Mo: 2.4%,

[0127] Cr: 8.9%, RE: 0.4%,

[0128] Mn: 0.3%, Si: 1.0%,

[0129] B: 0.01%, Al: 0.8%,

[0130] Nb: 2.4%, Ni: 0.3%,

[0131] The balance is Fe and trace unavoidable impurities;

[0132] 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;

[0133] 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;

[0134] 4)...

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Abstract

The invention relates to a preparation method of an anti-corrosion high-temperature-resistant wear-resistant casting pipe. The preparation method comprises the following steps of: preparing a wear-resistant pipeline body by centrifugal casting, treating the wear-resistant pipeline by processes of quenching, high-temperature tempering, solid-solution strengthening heat treatment and twice quenching-dispersing-hardening heat treatment, then coating an anti-rusting coating layer on the outer wall of the pipeline by electrostatic spraying, finally coating water-glass nano composite coat prepared by test on the inner wall of the pipeline, cooling after high-temperature curing, and obtaining a high-temperature-oxidation-resistant anti-corrosion film-plated inner layer. The prepared metal pipeline is high in hardness and wear resistance, and the anti-corrosion coating layer is excellent in water resistance, antifouling effect and high-temperature resistance.

Description

technical field [0001] The invention relates to a preparation method of a pipeline, in particular to a preparation method of an anti-corrosion, high temperature and 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 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/56C22C38/54C21D9/14C21D1/18C21D1/25C09D183/04C09D7/12C09D5/08
CPCY02P10/20
Inventor 毛春龙毛金根陈善俊朱义才
Owner JIANGSU JINSHENGYUAN SPECIAL VALVE
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