OOCr13Ni5Mo ultralow-carbon martensitic stainless steel and producing method thereof

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...

AI Technical Summary

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 meet the erosion and corrosion requirements of sediment in China's waters. , resulting in the short running time of the hydropower system, heavy maintenance and repair workload, high cost, low overall work efficiency, and poor economic benefits