Metallurgical slag pot trunnion casting method

Abstract

The invention relates to a trunnion imbedding method of a metallurgical slag pot. A processed trunnion is cast on a slag pot body to complete casting of the trunnion and the slag pot body when the slag pot body is cast. The trunnion imbedding method comprises the following steps of (1) preparing an outer sand mould; namely transversely embedding the processed trunnion in the sand mould, and stretching an inside end of the trunnion into a cavity of the outer sand mould; and (2) enabling the outer sand mould to be sleeved on an inner sand mould, casting molten steel in a cavity between an outer sand mould model and an inner sand mould model, casting the trunnion on the slag pot body, removing the sand moulds after cooling, and completing the casting of the trunnion and the slag pot body. The trunnion imbedding method is simple in operation, high in work efficiency, short in production period and low in production cost.

Description

technical field [0001] The invention relates to a method used in the field of metallurgy, in particular to a method for inserting and casting a trunnion of a metallurgical slag tank. Background technique [0002] The slag tank is a container used to hold various high-temperature liquid slag, and is a key equipment for metal smelting. The trunnion is also the key part of the slag tank, which is responsible for the lifting and tipping functions of the slag tank, and its reliability is very strict, which requires a dense structure around the trunnion. In addition, in the slag treatment process, the loading and unloading of the slag tank truck and the tipping of the slag tank are automatically completed through hydraulic transmission, so the requirements for the relevant dimensions of the trunnion and the tipping structure are relatively high. [0003] There are two existing casting processes for the trunnion and the slag pot body: the first one is to process the trunnion 4 fir...

AI Technical Summary

Problems solved by technology

This process is based on the center line of the trunnion in the radial parting of the slag pot body 7, and the processed trunnion is placed at the set trunnion core head (2# core 9, 3# core 10) after the mold is ejected 4, then case-casting, trunnion 4 tolerances cannot be guaranteed, (see figure 1 ); and after the overall casting of the slag pot, the trunnion 4 is processed, the processing cost is high, the cycle is long, the structure of the trunnion 4 is not dense enough, and there is shrinkage porosity 12, so there is a big safety hazard (see image 3 )

[0004] No matter what method is used to install the trunnion, it is necessary to machine the trunnion and the slag pot body, and due to the limitations of the casting process, the structure around the trunnion and the trunnion will not be dense, and more importantly, the production cycle will be long , high production cost

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