The submarine steel is usually produced by ultra pure smelting process

The purity has great influence on the plasticity, toughness, weldability, ductile brittle transition temperature and anti explosion performance of submarine steel, so the submarine steel is usually produced by ultra pure smelting process.

First, the raw materials should be selected, the scrap steel with low harmful element content or the blast furnace iron with low phosphorus sulfur after pretreatment should be selected as the raw material for steelmaking. Then, the electric furnace or converter plus vacuum refining method should be used to smelting, so as to greatly reduce the content of sulfur and phosphorus and other inclusions and harmful gases in the steel to obtain high purity steel.

In the developed countries, the United States is the representative of the western countries, which use electric furnace or converter to add vacuum refining method to produce submarine steel; The former Soviet Union used converter smelting method to cast electrodes, and then the electroslag heavy trust method was used to produce submarine steel.

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