Automatic slag adding machine for continuous casting large round and elliptical molds

Abstract

The invention relates to the technical field of casting of a continuous caster big round billet and an oval special-shaped crystallizer in steelmaking technologies and provides an automatic slag addition machine. The automatic slag addition machine comprises a bearing frame as well a longitudinal-moving slide base plate, a storage bucket, a material layout tube and a horizontal sway device which are disposed on the bearing frame, wherein the longitudinal-moving slide base plate can slide longitudinally on the bearing frame, the storage bucket and relevant longitudinal drive structures are disposed on the longitudinal-moving slide base plate, the tail end of the material layout tube is communicated with the storage bucket, and the head end is disposed above the crystallizer and can be swayed horizontally as driven by the horizontal sway device; in this way, the head end of the material layout tube can be controlled by longitudinal moving of the longitudinal-moving slide base plate and horizontal sway of the horizontal sway device to move along a round or oval path in order to uniformly add intended protective slag into the crystallizer; and the storage bucket and relevant moving control devices move longitudinally with the longitudinal-moving slide base plate, so that too big area will not be occupied horizontally, and the multiple slag addition machines can be applied side by side with a compact structure.

Description

Technical field [0001] The invention relates to the technical field of casting large round billets and elliptical special-shaped molds for continuous casting machines in steelmaking technology, and particularly provides an automatic slag adding machine for continuous casting large round and elliptical molds. Background technique [0002] In order to ensure the quality of continuous casting slabs, continuous casting steel generally uses mold powder, usually with 4-20% pure fluorine in the mold powder, and the slag consumption is about 2.5kg / t steel. In the production process, because workers are in an environment with a high fluorine concentration, it is not only harmful to health, but also the randomness of artificial slagging is large, and the slag layer is uneven, which easily causes problems such as slag entrapment, which affects the surface and internal quality of the cast slab. Especially for the casting of continuous casting billets with specific cross-sections, the automat...

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Problems solved by technology

[0003] In recent years, different forms of mold powder automatic slag machines have been developed at home and abroad. In summary, they are mainly slag adding machines for small-width slabs, small round billets, and small rectangular billets. The main disadvantages are: the delivery pipeline is long , Mold slag blocks the pipeline and the powder slag crushing rate is high; the patent technology of "Slab Continuous Casting Mold Mold Slag Adding Device" (CN 202549392A) has been disclosed in China. This automatic slag adding device is installed on the side of the mold, which is not suitable for It is used in the occasions where the installation space is small and multiple crystallizers are arranged side by side, and interferes with the main operation of billet pouring; there is also a patented technology of "automatic slag adding device for large cross-section mold" (public number CN 202247962A). The movement of the slag machine in the width direction increases the width space of the slag feeder, and the mold slag falls freely at the exit of the slag feed pipe, which is prone to uneven slag layer. This kind of slag feeder cannot flexibly enter and move out of the operation platform , so it is not suitable for use in the narrow working area of ​​most crystallizers; there is also the patented technology of "an automatic slag adding machine for continuous casting mold" (publication number CN102363208A), which realizes the slag adding process through multiple motor reducers Various position compensations, but when used for large-section slag addition, the ability to move longitudinally in the longitudinal direction cannot be realized. Due to the large structural weight of the device, there is no steering wheel mechanism on the car body, and the alignment between the device and the crystallizer cannot be realized. Therefore not suitable for use in the mold working area

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