Device and method for measuring flux in continuous casting of hot metal

Abstract

A metering gate for liquid metal flow control (1010) with reduced clogging with a top plate (1030), having a first flow channel bore (1031) with an inlet (1032) having an inlet axis (1015) and an outlet(1038) having an outlet axis (1033). The inlet axis (1015) and the outlet axis (1033) are offset (1036). A throttle plate (1040) slidably mounted on the top (1030) plate selectably receives flow from the top plate (1030). The metering gate (1010) provides a less tortuous and more symmetrical flow path when the gate is partially open, but provides a relatively straight downward flow channel allowing full flow when the gate is fully open.

Description

technical field [0001] This invention relates to metal casting. In particular, the invention relates to methods and devices for metering liquid metal in metal casting processes. Background technique [0002] A metering nozzle based on three plates is used to control the flow of liquid metal leaving a casting vessel such as a tundish. For example, metering nozzles can be used to control the flow of liquid steel from the tundish of a continuous casting machine to the mold. [0003] The metering nozzle includes an assembly of refractory components, each refractory component having a flow channel. The flow channels (i.e. holes) in the refractory component fit together to provide a complete flow channel through the nozzle that is in fluid communication with the casting vessel and through which liquid metal can flow . [0004] The refractory parts of the metering nozzle are mechanically assembled and clamped together so that one part, the throttle plate, can slide laterally in...

AI Technical Summary

Problems solved by technology

These problems include: (1) metal flow bending in the flow channel of the nozzle, which may cause excessive turbulence and asymmetric liquid metal discharge; (2) metal and non-metallic materials adhered to the channel wall Accumulation of accumulation causes severe non-uniform clogging of the flow channel, which will subsequently fail to obtain proper flow and smooth discharge of the liquid metal; Containment or Metal Spills

As such, discharge is overly restricted and the asymmetry of fluid flow into outlet tube 460 is more severe, thereby promoting clogging and corrosion.

[0023] Therefore, the method of improving flow symmetry by angling the flow channels in the throttle plate so as to direct the fluid flow back towards the main central axis when the nozzle is partially opened is flawed and may cause more damage during operation. big problem

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