Process - casting steel ingot Jiangsu Lian Yuan Machinery Manufacturing Co. Ltd.

    A summary of the ingot

    The molten steel into a mold by Sheng ladle after the formation of ingot solidification. Complete melting of liquid steel in electric furnace, must be cast into the shape of steel ingot can be processed. With a mold cast process called ingot ingot.

    Two, pouring method

    Note on ingot casting method and BET method two. On the internal structure of casting generally better, less inclusions, low operating cost; on ingot with good surface quality, Lian Yuan company uses BET method to produce steel ingot. The ingot size depends on the needs of customers. For the production of bar and section steel ingot is generally Affirmative section (called ingot); the production of sheet metal ingot is generally rectangular cross-section (called flat ingot); forging production material ingot round and square, plum blossom.

    The molten steel enters from the intermediate frequency furnace ladle after refining and vacuum degassing, the tapping slag mixed in steel or other impurities removal rate, and removal of harmful gases.

    Casting temperature casting temperature should be strictly controlled. The casting temperature is too low, the liquid steel surface immediately into the mold after solidification, will cause the ingot surface defect, and molten steel in the ladle start solidification, cause the loss of metal or whole furnace steel scrap; casting temperature is too high, will delay the formation time of steel ingot, lead ingot hot crack. The steel, casting temperature control in general higher than the liquidus temperature of the steel 40 to 60 DEG C. In order to ensure the uniformity of the whole barrel temperature of molten steel, to ladle argon stirring in liquid steel.

    Injection speed BET method generally requires proper injection speed to ensure the steady rise of molten steel in mold, and casting temperature regulation. Casting temperature is too high with slow note, too low when using fast injection. Injection method to control the injection speed to reduce spatter.

    In order to avoid the pouring of atmospheric oxygen into the ingot with inert gas argon and air contact steel flow, steel rising liquid synthesis of solid slag powder in protection mode.

    The volume shrinkage caused by the cap killed ingot body when the solidification of molten steel in the supplement, it may be appropriate to extend the cap casting time. General injection ratio cap ingot body injection speed slow times.

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