1. How to prevent oxidation of mould copper tubeMould copper tube has good thermal conductivity and thermal conductivity, but it is easy to oxidize in air. The
1. How to prevent oxidation of mould copper tube
Mould copper tube has good thermal conductivity and thermal conductivity, but it is easy to oxidize in air. The use of antioxidants, also known as copper antioxidants, can improve the resistance to discoloration and oxidation of mold copper tubes. Passivation film is formed on its surface to prevent the surface from darkening and improve the ability of corrosion resistance, discoloration and oxidation resistance. And does not affect the welding performance. Especially the use of mold copper tube, after grinding passivation treatment. The amount of anti-oxidant used in the stock can be used directly. Antioxidant protectant is the last antioxidant process in copper polishing process. During use, the workpiece should be soaked in the drug and shaken slightly so that the workpiece can fully contact the drug. Antioxidants have no pungent odor and are easy to operate with high production efficiency. However, the workpiece must be cleaned with clean water or pure water after treatment, otherwise it will affect the surface。
2.Round mould
The round mold is heated by the external heater to the circulating material liquid. The heated material liquid enters the evaporation chamber to achieve supersaturation, and then enters the suspension bed through the vertical pipe to make the crystal grow in the stable region. Due to the special structure of the mold, the larger particles in contact with supersaturated solution have priority to grow. Therefore, the crystal produced by the round blank crystallizer has the advantages of large volume, uniform particles, large production capacity, continuous operation and low labor intensity.
shengmiao
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
shengmiao
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
shengmiao
In continuous casting, low corrosion resistance often occurs, which directly leads to uneven composition and will eventually affect the smelting quality. In or