Slagging and slagging method for high-temperature alloy short-electrode electroslag furnace

Abstract

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. The electroslag furnace slagging method of the superalloy short electrode of the present invention, the slag material is first placed in the slag adding machine, the slag adding machine is started, the slag material enters the lower fume hood along the slag adding pipe, then reaches the lower flange, and Gather and align on the flange, enter the crystallizer, flow through the electrode cap, and finally reach the bottom pad to start slagging. The slag addition and slagging method of the electroslag furnace with the superalloy short electrode of the present invention is a simple and smooth feeding method, so that the slag can enter the bottom pad of the crystallizer evenly without delay, and the setting of the electrode cap can improve the slag The utilization rate of the material, by setting appropriate parameters, can not only ensure the smooth slagging process, but also speed up the smelting rhythm, make the thickness of the slag skin small and the slag inclusion light, thereby improving the quality of the alloy.

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...

Examples

Embodiment 1

[0029] A slag adding and slagging method for a high-temperature alloy short-electrode electroslag furnace. The slag material is placed in the slag adding machine 1, the slag adding machine is started, and the slag material enters the lower fume hood 2 along the slag adding pipe 11, and then reaches the lower part of the method. Lan 3, and gather and align on the lower flange 3, enter the crystallizer 4, flow through the electrode cap 5, and finally reach the bottom pad 6, start slagging, the steps are as follows:

[0030] Initial stage of slagging: In the initial stage, use 7831A current for 1.1min temperature rise and preheating, then add slag at a speed of 1.0kg / min for 3.0min; then increase the current to 7904A, increase the slag adding speed to 1.5kg / min, and add slag at 5.0 min, the initial stage of slagging ends;

[0031] Slagging stable period: during the stable period, increase the current to 13078A, add slag at a slagging rate of 2.0kg / min for 4.9 minutes, then stop a...

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...

Examples

Embodiment 1

[0029] A slag adding and slagging method for a high-temperature alloy short-electrode electroslag furnace. The slag material is placed in the slag adding machine 1, the slag adding machine is started, and the slag material enters the lower fume hood 2 along the slag adding pipe 11, and then reaches the lower part of the method. Lan 3, and gather and align on the lower flange 3, enter the crystallizer 4, flow through the electrode cap 5, and finally reach the bottom pad 6, start slagging, the steps are as follows:

[0030] Initial stage of slagging: In the initial stage, use 7831A current for 1.1min temperature rise and preheating, then add slag at a speed of 1.0kg / min for 3.0min; then increase the current to 7904A, increase the slag adding speed to 1.5kg / min, and add slag at 5.0 min, the initial stage of slagging ends;

[0031] Slagging stable period: during the stable period, increase the current to 13078A, add slag at a slagging rate of 2.0kg / min for 4.9 minutes, then stop a...

Images