Core-spun wire production process
The cored wire technology is an out-of-furnace refining method produced with the advancement of science and technology. Alloy cored wire is used in steelmaking, which can purify the form of steel inclusions, improve the castability of molten steel, significantly increase the yield of ferroalloys, reduce alloy consumption, and reduce steelmaking costs, with significant economic benefits. The cored wire is to crush various additives (deoxidizers, desulfurizers, modifiers, alloys, etc.) to a certain size, and then use cold-rolled low-carbon steel strips to make them into composite materials of any length.
It can purify the form of inclusions, improve the castability of molten steel, improve the performance of steel, significantly increase alloy production, reduce alloy consumption, reduce steelmaking costs, and achieve significant economic benefits.
The technical indicators of the cored wire are as follows:
1. Calcium is added to the molten steel, the reaction of the molten steel is stable, secondary oxidation is avoided, the inclusions float up quickly, and the effect of purifying the molten steel is good.
2. It is beneficial to the fine-tuning control of steel composition.
3. Alloy output has been greatly increased.
4. Wire feeding can avoid bringing gas into molten steel.
5. Strong adaptability and wide application range.
6. The feeding line is operated by equipment, which is easy to maintain, safe in production and does not pollute the environment.
Carbon-cored wire for carburizing in steelmaking; rare-earth magnesium-calcium-silicate alloy-cored wire for desulfurization; various alloy-cored wires for alloy addition; iron-calcium-cored wire; aluminum-calcium-cored wire. It can be seen from the production process of the cored wire that the cored wire is a means of assisting steelmaking. Through this method of refining outside the furnace, the performance of molten steel can be significantly improved, which is very beneficial to reduce the cost of steelmaking for enterprises.
It is beneficial to adjust and control the content of oxidizable elements and trace elements, greatly increase the output of the alloy, reduce the cost of smelting, shorten the time of smelting, and accurately control the composition. It can purify molten steel, partially change the nature and shape of inclusions, improve the quality of molten steel, and improve the casting state. Corespun wire can be divided into two types: internally drawn and externally placed. The mechanical equipment required for wire feeding is simple and reliable, and occupies a small area. In particular, inner drawn cored wire is more suitable for use in narrow places. Core-spun wire feeding technology Alloy cored wire technology High-silicon-magnesium ratio alloy spheroidized cored wire manufacturing process High-magnesium alloy cored wire core removal agent and cored wire manufacturing process Alloy cored wire process Magnesium alloy material development and application Application of steel calcium treatment technology and blast furnace tuyere wire feeding technology to effectively repair blast furnace erosion Calcium treatment: an important means to improve the shape of inclusions through near-finish casting.