What is the desulfurization process of carbon steel flanges? Let me give you a brief explanation below.
Desulfurization in oxygen converters is difficult and uneconomical. In recent years, the supply of advanced metallurgical coke has been insufficient, and the sulfur content of coke has increased. The heavy oil poured into blast furnace melting is also high in sulfur content, making the amount and cost of low-sulfur molten iron considered steelmaking standards increasingly problematic. Practice has shown that removing the drum from the blast furnace and converter is a good way to solve the main contradiction.
It can improve the process and economic data of iron and carbon steel flanges together. Compared with the converter, it is very important to simplify the control and realize the automatic control. It is growing rapidly in many countries. The principle of desulfurization outside the furnace is the same as that inside the furnace. That is, the conversion of iron sulfide to more stable, less soluble or completely insoluble iron sulfide using elements or compounds that have a stronger attraction for sulfur than iron and sulfur. At the same time, better dynamic conditions are established, the extension of sulfur in the molten water to the influence zone is accelerated, and the influence zone between the desulfurizer and the molten iron is expanded. ASTM440 is called high toughness carbon steel elbow.
Including Mn-Cu high toughness low alloy steel shapes, plates and rods. Specifically used for riveting or screwing (non-welding) bridges and buildings. Generally do not advocate the use of electric welding. However, after some measures are taken, the materials can also be welded together.
Due to its low copper content of 0.2%, it has the function of resisting atmospheric corrosion, which is about twice that of copper-free carbon structural steel. A steel plate with a thickness not exceeding 19mm ensures a low yield strength of 345MPa.