Thoughts On Research And Development Of Stainless Steel Smelting

• The initial carbon content of stainless steel smelting is relatively high, which improves the activity coefficient of phosphorus and reduces the activity coefficient of chromium, which is beneficial to dephosphorization and chromium preservation. The initial carbon allocation of some foreign manufacturers has reached 1.9%. The high carbon content is beneficial to reduce the oxidation of chromium in the melting process, and reduce or eliminate the operation of adding reducing agent to the surface of the molten pool during the melting process.
• The use of carbon oxidation exothermic can reduce power consumption, which is in line with the development trend of metallurgical technology. Moreover, it is easier to decarburize in the high carbon content area, and decarburization will not become too much burden in modern electric arc furnace steelmaking technology. The development of modern electric arc furnace steelmaking technology has made it possible to dephosphorize stainless steel in the electric arc furnace. In addition to changing the smelting process conditions, the use of DC electric arc furnace steelmaking technology can also promote dephosphorization due to electrochemical reactions.
• It is possible to combine foam slag technology, smelting reduction technology, direct alloying and dephosphorization technology to develop a new process flow.
• Develop the top-bottom combined blowing converter smelting process for stainless steel, and use the returned stainless steel scraps as ingredients only.
• For electric arc furnace steelmaking plants, the production organization of stainless steel should be done well, using carbon steel dephosphorization, or low-phosphorus, sulfur molten steel plus scrap steel, and then adding stainless steel return material for stainless steel production process to ensure the phosphorus of the product Content requirements. Of course, this requires the use of the return method to produce stainless steel production plants, change the traditional stainless steel production process without dephosphorization, and re-coordinate the feeding, melting, and refining processes. The use of molten iron in electric arc furnaces can not only alleviate the shortage of scrap steel in our country, but also an important energy-saving measure that meets the requirements of technological progress.
• Due to the high viscosity of chromium-containing slag, precise control technology of chromium oxide in the slag should be developed.
• Continue to develop stainless steel and high-chromium alloy dephosphorization technology. Combined with the development trend of metallurgical process, the dephosphorization process system will be studied.

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By Minghe Die Casting Manufacturer |Categories: Helpful Articles |Material Tags: Aluminum Casting, Zinc Casting, Magnesium Casting, Titanium Casting, Stainless Steel Casting, Brass Casting,Bronze Casting,Casting Video,Company History,Aluminum Die Casting |Comments Off