Liquid alloy vacuum melting single-roller melt-spinning method and device

Abstract

The invention discloses a liquid alloy vacuum melting single-roller melt-spinning method and device. Gas protection is carried out when vacuum melting is carried out and a melting crucible topples over, and alloy solution oxidation in the process is avoided. When a nozzle bag is preheated, protective gas is filled into a heat preservation chamber, and alloy solutions are prevented from flowing to the heat preservation chamber and being oxidized. Air sealing is carried out on two sides of nozzles in the band spraying process, formed spray bands in the band spraying process are prevented from being oxidized, and the quality of the spray bands is guaranteed. A vacuum chamber (a melting area) and the heat preservation chamber (a band spraying area) are separated through a gate valve, melting and band spraying are not influenced, continuous production is achieved, production efficiency is improved, and the technical problem that high silicon steel and other alloy difficult to process are easy to oxidize in the processing process is solved.

Description

technical field [0001] The invention relates to metal and alloy melt stripping technology, in particular to a single-roller stripping method and device for vacuum smelting of liquid alloys. Background technique [0002] Difficult-to-process alloy materials such as high-silicon steel have high hardness and high brittleness, and their elongation at room temperature is close to zero. The yield of products prepared by conventional rolling methods is only about 20-30%, which makes their industrialization difficult. [0003] The single-roll belt throwing technology uses super-quick cooling technology to pass liquid metal through a high-speed rotating single-roll cooling roller, and directly forms a solid thin strip with a thickness of 20 μm to 40 μm after high-speed cooling. The process is: using a copper alloy or stainless steel water-cooled rotating roll, the molten steel flows out from the top or side of the roll surface close to the roll surface, and is quenched on the roll su...

AI Technical Summary

Problems solved by technology

The single-roll strip stripping technology has the characteristics of high cooling rate, short process route and thin strip thickness, which solves the production difficulties of difficult-to-process alloys (such as high-silicon steel) that are difficult to roll and coil However, difficult-to-process alloys (such as high-silicon steel) are easily oxidized in the process of stripping, which makes the quality of spray strips unqualified and reduces production efficiency.

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