Slag adding and slagging method of high-temperature alloy short-electrode electroslag furnace

Abstract

The invention belongs to the technical field of slag adding of electroslag furnaces, and particularly relates to a slag adding and slagging method of a high-temperature alloy short-electrode electroslag furnace. The slag adding and slagging method of the high-temperature alloy short-electrode electroslag furnace comprises the steps that firstly, slag is placed in a slag adding machine, the slag adding machine is started, and the slag enters a lower smoke hood along a slag adding pipe, then reaches a lower flange, is gathered and aligned on the lower flange, enters a crystallizer, is guided through an electrode cap, finally reaches a bottom pad and starts to be slagged. The slag adding and slagging method of the high-temperature alloy short-electrode electroslag furnace is a simple and smooth feeding mode, the slag can evenly enter the bottom pad of the crystallizer without delay, and the utilization rate of the slag can be increased through the arrangement of the electrode cap; and bysetting proper parameters, the slagging process is smooth, the smelting rhythm can be accelerated, the slag crust thickness is small, the slag inclusion condition is light, and therefore the alloy quality is improved.

Description

technical field [0001] The invention belongs to the technical field of slag adding to an electroslag furnace, and in particular relates to a method for adding slag and making slag to a high-temperature alloy short-electrode electroslag furnace. Background technique [0002] Superalloys refer to a class of metal materials based on iron, nickel, and cobalt, which can work for a long time at high temperatures above 600°C and under certain stresses; and have high high-temperature strength, good oxidation resistance and corrosion resistance. Good fatigue performance, fracture toughness and other comprehensive properties. The superalloy is a single austenite structure, which has good structure stability and service reliability at various temperatures. As a material widely used in aviation, aerospace, petroleum, chemical industry, ships and other fields, superalloy has broad development prospects. [0003] As a very important link in the smelting process of superalloy alloys, ele...

AI Technical Summary

Problems solved by technology

Especially when the electrode is short, the height of the top of the electrode will be lower than the height of the lower flange. When the slag enters the crystallizer through the lower flange, a considerable part of the slag will accumulate on the top of the electrode at the beginning, which will delay the slag discharge. The time it takes for the material to reach the bottom of the crystallizer will cause arc breaks or alloy quality degradation, and inappropriate parameter settings will also affect alloy quality or even cause arc breaks

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