Anti-oxidation treatment of mold copper tubeThe mold copper tube has good thermal conductivity and other physical properties, but it is easy to oxidize in the
Anti-oxidation treatment of mold copper tube
The mold copper tube has good thermal conductivity and other physical properties, but it is easy to oxidize in the air. The use of anti-oxidant, also known as copper anti-oxidant, can improve the anti-tarnishing and anti-oxidation ability of the copper tube of the mold after treatment. A passivation film is formed on the surface to prevent the surface from darkening, and to improve its corrosion resistance, discoloration resistance, and oxidation resistance. And does not affect the welding performance. Especially use mold copper tube, passivation treatment after polishing. The stock solution of the amount of antioxidant used can be used directly. The use temperature is 20-50 degrees Celsius, and the time is 3-5 minutes. The anti-oxidation protective agent is the last anti-oxidation process in the copper polishing process. During use, the workpiece should be immersed in the chemical and slightly shaken so that the workpiece can fully contact the chemical . The anti-oxidation protective agent has no pungent odor, simple operation and high production efficiency. However, after the workpiece is treated with chemical water, the surface must be cleaned with clean water or pure water, otherwise it will affect the surface of the workpiece.
The anti-oxidation process of the crystallizer copper tube is: degreasing → washing twice → polishing or 10% sulfuric acid activation → washing twice → anti-oxidation treatment → washing twice → drying
The use of antioxidants can increase the service life of the mold copper tubes.
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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