A floating valve type spray bag for amorphous tape

Abstract

The invention discloses a float valve type spraying pack for preparing amorphous strip. The float valve type spraying pack for preparing the amorphous strip comprises a spraying pack body, a molten iron taking port, a molten iron taking port base board, a spraying nozzle, a nozzle seat, a valve rod seat, a float valve unit, a baffle, a left counter weight and a right counter weight. The float valve unit is arranged inside the cavity of the spraying pack body and is composed of a valve rod, a float block, a left guide rod and a right guide rod, and the lower end of the valve rod is connected with a central hole of the valve rod seat in a centering joint mode; the top end of each guide rod is provided with the corresponding counter weight; the baffle is movably arranged inside a groove at the upper end of the spraying pack body and provided with a molten iron separation cone. According to the technical scheme, the float valve type spraying pack for preparing the amorphous strip can control the molten iron level freely, achieve strip spraying at intervals actively and stop automatic molten iron discharge when abnormal strip spraying occurs and meanwhile is simple in structure, low in cost, safe, reliable and capable of prolonging the service life of equipment.

Description

technical field [0001] The invention belongs to the field of metal material preparation, and is particularly suitable for a float-valve type spray bag for making amorphous tapes. Background technique [0002] In the prior art, rapid solidification technology is usually used for the preparation of amorphous alloy thin strips, and molten iron is poured onto the surface of rotating cooling rolls through spray ladles equipped with nozzles to form thin strips. Among them, the gravity belt-making equipment relies on the self-weight pouring of molten iron in the spray ladle. When the spray ladle starts to inject molten iron, the spray belt has already started. At this time, because the molten iron in the spray ladle is extremely unstable, there is a lot of scum, and the pressure is not enough, when the ladle is filled with molten iron, it takes several seconds to gradually stabilize, and the strip before stabilization cannot meet the use requirements. At the same time, it is diffi...

AI Technical Summary

Problems solved by technology

At this time, because the molten iron in the spray ladle is extremely unstable, there is a lot of scum, and the pressure is not enough, when the ladle is filled with molten iron, it takes several seconds to gradually stabilize, and the strip before stabilization cannot meet the use requirements

At the same time, it is difficult to control the liquid level of the spray ladle stably when pouring manually, and the automatic liquid level control system is complicated and costly

[0003] In the existing spraying process, the molten iron in the spraying ladle cannot actively stop pouring. During the continuous spraying process, the surface of the nozzle and the cooling roller is severely deformed by the high-temperature molten iron, which reduces the quality of the strip and the service life of the equipment.

At the same time, when the spraying belt is abnormally interrupted in the existing design of the spraying ladle, the high-temperature molten iron in the ladle still needs to flow by itself, which causes safety hazards to equipment and operators while wasting raw materials, and is inconvenient for loading and unloading

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