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A kind of anti-rust and heat-resistant special-shaped steel pipe and its preparation method

A special-shaped steel pipe and heat-resistant technology, applied in the field of special-shaped steel pipes, can solve the problems of poor high temperature resistance and low rust resistance, and achieve the effects of low residual stress, low cost and good weldability

Active Publication Date: 2016-05-11
BEIJING JINYU SHUNDA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: to overcome the technical deficiencies in the prior art of special-shaped steel pipes with poor high temperature resistance and low rust resistance, and to provide a special-shaped steel pipe with excellent long-term high temperature resistance and rust resistance and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A kind of anti-rust and heat-resistant special-shaped steel pipe, the mass parts of the special-shaped steel pipe are composed as follows: 0.8 parts of carbon, 2 parts of silicon, 10 parts of manganese, 20 parts of nickel, 30 parts of chromium, 2 parts of copper, 0.1 part of sulfur, 0.3 parts of phosphorus 5 parts of nitrogen, 0.3 parts of vanadium, 0.03 parts of boron, 10 parts of lanthanum, 80 parts of iron, and 3 parts of additives.

[0023] Wherein, the composition by mass of the additive is as follows: 16 parts of sodium peroxide, 18 parts of ammonium perchlorate, 6 parts of calcium chloride, 12 parts of borax, 6 parts of sodium hydroxymethyl cellulose, 12 parts of polyacrylamide, 10 parts of ionized water, 10 parts of glycerol.

[0024] The additive adopts the following preparation method: (1) adding each component into the reaction kettle by weight, heating to 70-80°C, stirring for 20-25min, (2) centrifugal filtration, drying at 100-120°C to constant weight , th...

Embodiment 2

[0030] A kind of anti-rust and heat-resistant special-shaped steel pipe, the mass parts of the special-shaped steel pipe are composed as follows: 4 parts of carbon, 3 parts of silicon, 16 parts of manganese, 25 parts of nickel, 36 parts of chromium, 3 parts of copper, 0.3 parts of sulfur, 0.6 parts of phosphorus 8 parts of nitrogen, 1.2 parts of vanadium, 0.1 parts of boron, 16 parts of lanthanum, 100 parts of iron, and 4 parts of additives.

[0031] Wherein, the composition by mass of the additive is as follows: 18 parts of sodium peroxide, 22 parts of ammonium perchlorate, 7 parts of calcium chloride, 14 parts of borax, 8 parts of sodium hydroxymethyl cellulose, 15 parts of polyacrylamide, 15 parts of ionized water, 13 parts of glycerin.

[0032] The additive adopts the following preparation method: (1) adding each component into the reaction kettle by weight, heating to 70-80°C, stirring for 20-25min, (2) centrifugal filtration, drying at 100-120°C to constant weight , the...

Embodiment 3

[0038] A kind of anti-rust and heat-resistant special-shaped steel pipe, the mass parts of the special-shaped steel pipe are composed as follows: 7 parts of carbon, 5 parts of silicon, 20 parts of manganese, 30 parts of nickel, 40 parts of chromium, 4 parts of copper, 0.4 parts of sulfur, 0.8 parts of phosphorus 10 parts of nitrogen, 2 parts of vanadium, 0.2 parts of boron, 20 parts of lanthanum, 100 parts of iron, and 6 parts of additives.

[0039] Wherein, the composition by mass of the additive is as follows: 20 parts of sodium peroxide, 24 parts of ammonium perchlorate, 8 parts of calcium chloride, 16 parts of borax, 10 parts of sodium hydroxymethyl cellulose, 18 parts of polyacrylamide, 20 parts of ionized water, 16 parts of glycerin.

[0040] The additive adopts the following preparation method: (1) adding each component into the reaction kettle by weight, heating to 70-80°C, stirring for 20-25min, (2) centrifugal filtration, drying at 100-120°C to constant weight , the...

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PUM

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Abstract

The invention relates to the technical field of special-shaped steel tubes and particularly relates to an anti-rust heat-resistant special-shaped steel tube and a preparation method thereof. The anti-rust heat-resistant special-shaped steel tube is prepared from the following components in parts by mass: 0.8-7 parts of carbon, 2-5 parts of silicon, 10-20 parts of manganese, 20-30 parts of nickel, 30-40 parts of chromium, 2-4 parts of copper, 0.1-0.4 part of sulfur, 0.3-0.8 part of phosphorus, 5-10 parts of nitrogen, 0.3-2 parts of vanadium, 0.03-0.2 part of boron, 10-20 parts of lanthanum, 80-100 parts of iron and 3-6 parts of an additive. The anti-rust heat-resistant special-shaped steel tube provided by the invention is low in cost, good in structure stability and cold and hot machinability, long in anti-fatigue service life, wear-resistant, corrosion-resistant, high in precision, good in weldability, good in overall straightness and low in residual stress. The anti-rust heat-resistant special-shaped steel tube provided by the invention can resist temperature reaching 1800 DEG C. The preparation method provided by the invention is simple in production process and low in cost, has a good economic benefit and is suitable for industrialized production on a large scale.

Description

technical field [0001] The invention relates to the technical field of special-shaped steel pipes, in particular to a rust-proof and heat-resistant special-shaped steel pipe and a preparation method thereof. Background technique [0002] Special-shaped steel pipe is a long strip of steel with a hollow section, widely used in automobiles, trains, airplanes, ships and space launchers and other structural components, mechanical parts, petrochemical, geological drilling, textile machinery, radio communications, medical and health, Completion and other fields. [0003] With the sharp increase of national electricity demand, the development of thermal power units with large capacity and supercritical parameters is the current world trend. The higher the parameters (pressure and temperature), the more capacity it can convert and the more efficient the unit will be. Metal materials for boilers of supercritical and ultra-supercritical generator sets are constantly being developed a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/58C22C30/02
Inventor 周金苗
Owner BEIJING JINYU SHUNDA TECH CO LTD
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