Factors affecting the service life of mold copper tubes:1 Quality problems of the crystallizer itself1) The influence of copper pipe design parameters. The desi
Factors affecting the service life of mold copper tubes:
1 Quality problems of the crystallizer itself
1) The influence of copper pipe design parameters. The design parameters of the mold copper tube mainly refer to the material, coating, inner cavity curve, fillet radius, etc., which directly determine the service life of the copper tube.
2) Mold repair. The quality of mold maintenance is also the main reason that affects its life. The key process for the quality of the repair is the adjustment of the water gap. If the water gap around the copper pipe is uneven, it will directly lead to the uneven cooling of the copper pipe and cause deformation and damage.
2 The influence of process conditions and operation
1) Mould lubrication.
2) The influence of the number of steel pulls. The number of times the steel is drawn will directly produce thermal expansion of the copper tube, which will cause the copper tube to produce stress, which will cause it to yield and permanent deformation, which will affect the service life of the copper tube.
3) Amplitude influence.
3 Cooling water condition
Water quality is another factor that strongly affects the temperature and deformation of the mold wall.
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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