The advantages of the new chromium zirconium copper crystallizer copper tubeThe mold copper tube is the heart of the continuous casting machine. Its quality d
The advantages of the new chromium zirconium copper crystallizer copper tube
The mold copper tube is the heart of the continuous casting machine. Its quality directly determines the quality of the cast billet and the amount of steel passed. The service life of the mold copper tube depends on the equipment process and management level of the steel plant, and also depends on the mold The material of the copper tube and the manufacturing level of the copper tube.
At present, phosphorus deoxidized copper and silver copper are widely used in the production of mold copper tubes. Chromium-zirconium copper has not been widely used because of its high cost. This material has high strength and hardness, good electrical and thermal conductivity, and its mechanical properties are much higher than the commonly used mold copper tube materials, and the price is lower. It has been promoted and used in domestic and foreign markets and has achieved good Effect.
Henan Shengmiao Co., Ltd. summed up the advanced experience of mold production at home and abroad, and developed a stainless steel narrow water-slit mold. The water gap of the internal water jacket of this kind of crystallizer is generally 3.5~4. The straight surface and arc surface of the crystallizer copper tube adopt different tapers, and different tapers are designed according to the user's drawn steel variety, so as to better meet the user's needs. According to theoretical calculations, generally (150X150X850) mm copper pipe has a steel throughput of about 4000t, and the pulling speed reaches 3.2~3.5m/min. This kind of mold has been tried out in many steel plants across the country and has achieved good results.
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Harm of too high temperature: when molten steel out of cooper mold, the billet shell is thin and easy to break out; The accelerated erosion of refractory can ea
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1. The barrier function (mainly completed by the liquid slag layer) isolates the contact between air and molten steel, blocks the secondary oxidation of molten
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In continuous casting, low corrosion resistance often occurs, which directly leads to uneven composition and will eventually affect the smelting quality. In or