Steel used for third-generation nuclear power safety injection tank base plate and manufacturing method of steel

Abstract

The invention discloses steel used for a third-generation nuclear power safety injection tank base plate. The steel is characterized in that the chemical components of the steel comprise, by mass, 0.08-0.20% of C, 0.15-0.40% of Si, 0.90-1.60% of Mn, 0.30-0.60% of Mo, 0.40-0.70% of Ni, 0.05-0.30% of Cr, 0.01-0.05% of V, and the balance Fe and the inevitable impurities; impurity elements in the steel are controlled according to equations that P<=0.012%, S<=0.005%, [H]<=2.0 ppm, and [O]<=30 ppm.

Description

technical field [0001] The invention belongs to the field of ferrous metal materials, and in particular relates to the steel for the base plate of the third-generation nuclear power safety injection box and its manufacturing method. Background technique [0002] With the rapid economic development of all countries in the world, nuclear energy, as a clean, safe and stable energy source, has been paid more and more attention by all countries. It has become a trend to use nuclear energy safely and vigorously develop nuclear power. After the Fukushima nuclear accident in Japan in 2011, people have paid more and more attention to the safety of nuclear power. Most countries have begun to abandon second-generation nuclear power and switch to the more advanced and safer third-generation nuclear power. The safety injection box in the third-generation nuclear power nuclear island equipment is relatively critical nuclear-grade equipment. Because it has to withstand high temperature, h...

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Problems solved by technology

Another example is the application numbers CN201210349026.8, CN201310076884.4, CN201310083274.7, CN201320017144.9, etc., which cannot be used to manufacture the base plate of the safety injection box shell

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