关键词: TRIZ理论, 连铸, 引流砂, 长水口, 滑板

Abstract:

TRIZ theory was applied to analyze the problem of stuffing sand pollution to molten steel in the design of casting system of continuous casting ladles,and the key points were confirmed through functional analysis and causal chain analysis.The design of the continuous casting process was improved by TRIZ tools,such as material-field model,physical conflict and cutting,producing five solutions.After comprehensive evaluation,two optimal solutions were determined.(1)Replace the traditional solid stuffing sand with liquid metal stuffing sand of low melting point and high density,and adopt the hollow and/or vacuum treatment sliding plate,which can increase the insulation of the stuffing sand in the upper nozzle and avoid solidification,thus ensuring good drainage.(2)Design the long shroud outlet with combination structure,the bottom for intercepting stuffing sand and the side walls for molten steel running,extracting the stuffing sand that pollutes molten steel into the bottom of the long shroud for storage.

Key words: TRIZ theory, continuous casting, stuffing sand, long shroud, sliding plate