1. The copper mold tube manufacturer introduces the barrier function (mainly completed by the liquid slag layer). Isolate the contact between air and molten ste
1. The copper mold tube manufacturer introduces the barrier function (mainly completed by the liquid slag layer). Isolate the contact between air and molten steel, block the secondary oxidation of molten steel, block the contact between carbon rich layer and molten steel, avoid Carburization on the slab surface, improve the slab surface quality and reduce the loss of steel. Note: surface carburization of low carbon steel and ultra-low carbon steel will produce brittle billets.
2. Thermal insulation (mainly completed by solid slag). The operation environment (thermal radiation) of the plant is greatly improved, which is convenient for the smooth continuous casting. The solid slag layer with sufficient thickness can give better play to the thermal insulation performance of protective slag and prevent the condensation of cold steel and floating steel on the liquid level of crystallizer steel. The increase of the temperature in the meniscus area will avoid many problems and accidents. Such as cracks, pores on the surface of slab, etc.
3. Function of crystallizer accessories protective slag: absorb and melt impurities (mainly completed by liquid slag layer). It can effectively absorb melting inclusions (system refractory, deoxidation products and other metal inclusions), protect its own performance from change, purify molten steel, improve the purity of slab surface, low viscosity of protective slag and proper control of some components of protective slag, which are beneficial to slag absorption.
The good effect of mold powder for continuous casting billet mold and other mold accessories is related to other chemical composition, physical properties of raw materials and combination format of various raw materials. The melting characteristics with reasonable physical and chemical properties and stable and uniform layered structure and certain slag layer are indispensable.
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