The repair of copper mould tubeIn the selection of copper tube raw materials: from pure copper, phosphorus copper development to silver copper and chromium zir
The repair of copper mould tube
In the selection of copper tube raw materials: from pure copper, phosphorus copper development to silver copper and chromium zirconium copper. Thus, the thermal conductivity, deformation resistance and service life are improved. However, there has not been much improvement in the coating of copper tube in mold. At present, many mould copper tube manufacturers at home and abroad still use the traditional process of hard chromium plating on the inner surface treatment of mould copper tube. Although the chromium plating layer has higher hardness and good wear resistance, the coating is thinner. The chromium plating layer itself has microcracks, in addition, chromium and copper thermal expansion coefficient is very different, the use of high temperature will appear transverse cracks.
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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