OOCr13Ni5Mo ultralow-carbon martensitic stainless steel and producing method thereof

A technology of carbon martensitic and stainless steel, applied in the field of 00Cr13Ni5Mo ultra-low carbon martensitic stainless steel and its production, can solve the problems of heavy maintenance and repair work, poor economic benefits, high cost, etc., to improve stability and safety, The effect of improving economic efficiency and prolonging working life

Active Publication Date: 2008-01-16
ZHEJIANG DALONG ALLOY STEEL
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Problems solved by technology

In the past, many of the steel used in large-scale hydroelectric power stations used traditional 1Cr13 and 2Cr13 high-carbon martensitic stainless steel, while the US used S41500 low-carbon martensitic stainless steel, but none of them could m

Method used

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with embodiment.

[0027] The 00Cr13Ni5Mo ultra-low carbon martensitic stainless steel according to the present invention, the chemical composition includes the following components by weight percentage: C≤0.03, Mn 0.50-1.00, Si≤0.50, P≤0.025, S≤0.015, Cr 12.00-14.00, Ni 4.5-6.0, Mo 0.5-1.0, the rest are mainly Fe and unavoidable trace impurity elements.

[0028] The production method of 00Cr13Ni5Mo ultra-low carbon martensitic stainless steel mainly includes primary smelting in electric furnace, refining in refining furnace, casting ingot, annealing ingot, forging into billet, billet heat treatment, inspection, etc., in addition to the conventional stainless steel production method , which is characterized by:

[0029] 1. During smelting:

[0030] (1) Select high-quality pure steel scrap containing P≤0.03% and S≤0.03% as raw materials;

[0031] (2) During the chemical clearing period and initial st...

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Abstract

The invention discloses a 00Cr13Ni5Mo ultralow-carbon martensitic stainless steel and the manufacturing method thereof. The chemical components, by weight percentage, are as follows: C less than or equal to 0.03, Mn 0.50-1, Si less than or equal to 0.5, P less than or equal to 0.025, S less than or equal to 0.015, Cr 12-14, Ni 4.5-6, Mo 0.5-1, and Fe and inevitable impurity in balance. The manufacturing method mainly comprises, in order, primary smelting in an electric furnace, refining in a refining furnace, steel ingot casting, steel ingot annealing, forging rolling of blank, and heat treatment of blank. This type of steel has high strength, toughness and weldability; and has excellent resistance against erosion, wear and corrosion. The steel is mainly used, in large hydropower station, as key parts such as rotating wheel with thick section and good weldability and lower ring for hydropower station, and used as material for valve and gate valve systems.

Description

technical field [0001] The invention relates to metallurgical technology, more specifically to 00Cr13Ni5Mo ultra-low carbon martensitic stainless steel and a production method thereof. Background technique [0002] In view of the current shortage of oil in the international market, countries around the world are increasingly taking the road of green power generation. The Ministry of Electric Power of my country has clearly stated that it is necessary to focus on the development of green power generation such as wind power, hydropower, solar energy, tidal power, and nuclear power, and strictly control the consumption of coal and oil energy. Make my country's wind power, hydropower, solar energy, and nuclear power develop day by day throughout the country. In the past, many of the steel used in large-scale hydroelectric power stations used traditional 1Cr13 and 2Cr13 high-carbon martensitic stainless steel, while the US used S41500 low-carbon martensitic stainless steel, but no...

Claims

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Application Information

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IPC IPC(8): C22C38/44C22C33/04C21C7/00C21D8/00B21B37/00
Inventor 俞荣新张廷超陈宝华金宝林祖宇伟
Owner ZHEJIANG DALONG ALLOY STEEL
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