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Rare earth-containing nuclear seamless steel tube material and preparation method thereof

A technology of seamless steel pipe and nuclear power, which is applied to the material and preparation of seamless steel pipe for nuclear power containing rare earth, and the field of seamless steel pipe for nuclear power containing rare earth, can solve the problems of aggravating environmental pollution, increase power generation cost, etc., and achieve energy saving in production process The effect of environmental protection, high production efficiency and good toughness

Active Publication Date: 2013-07-10
INNER MONGOLIA BAOTOU STEEL UNION
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the long-distance transportation of coal to coastal areas for power generation, 48% of the railway transportation capacity and 25% of the road transportation capacity are occupied, which not only increases the cost of power generation, but also aggravates the environmental pollution of conventional power plants in this area

Method used

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  • Rare earth-containing nuclear seamless steel tube material and preparation method thereof
  • Rare earth-containing nuclear seamless steel tube material and preparation method thereof

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Embodiment Construction

[0019] The invention adopts Baotou Steel's own ore as raw material, and the ore contains rare earth elements. The rare earth elements include La and Ce.

[0020] The steelmaking production process of steel is:

[0021] The steel smelting and continuous casting process is molten iron pretreatment→converter smelting→LF refining→VD degassing→round billet continuous casting. The smelting uses a 100-ton top-bottom combined blowing converter, using desulfurized molten iron, ferrosilicon, ferromanganese and other alloys using deoxidation alloying, single slag process, and the final slag alkalinity is controlled at 3.0. The composition of the end point of the converter is controlled to be no less than 0.03% carbon, no more than 0.01% phosphorus, the temperature of the molten steel in the converter is controlled above 1600°C, and 100-300kg of limestone is added during the tapping process. LF refining adopts single refining production, and the whole process is blown argon according to...

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PUM

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Abstract

The invention discloses a rare earth-containing nuclear seamless steel tube material. The seamless steel tube material comprises components in percentage by weight: 0.12-0.18 of C, 0.17-0.37 of Si, 0.6-1.0 of Mn, 0.016-0.018 of Cr, 0.02-0.04 of V, no more than 0.015 of P, no more than 0.010 of S, 0.002-0.005 of Re, and the balance of Re, wherein the sum of mass percentage is 100%. The invention further discloses a preparation method of the earth-containing nuclear seamless steel tube material. The preparation method is unique in production technique, high in production efficiency, low in cost and energy-saving and environment-friendly in production technique, the produced seamless steel tube is good in compressive strength and high-temperature resistance property, high in economic benefits, and suitable for large-scale production, and has good popularization values.

Description

technical field [0001] The invention relates to a metallurgical material technology, in particular to a rare earth-containing seamless steel pipe material for nuclear power and a preparation method thereof, which can prepare rare earth-containing seamless steel pipes for nuclear power with better compressive strength and high temperature resistance . Background technique [0002] Among my country's natural energy resources, about 80% of coal is concentrated in the northwest and north; about 70% of water resources are distributed in the southwest. The eastern and southeastern coastal areas with dense population, rapid economic development and high demand for electricity are extremely scarce in natural energy resources. The contradiction between power supply and demand in the eastern and southeastern coastal areas with rapid economic development is more prominent, and it has led to "transporting electricity from west to east, coal from north to south" and pressure on environm...

Claims

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Application Information

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IPC IPC(8): C22C38/24
Inventor 石晓霞刘金马爱清靳燕张行刚惠志国
Owner INNER MONGOLIA BAOTOU STEEL UNION
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