Method of applying electric field energy on molten steel to improve quality of silicon steel billet

A technology of electric field energy and molten steel, which is applied in the field of iron and steel metallurgy, can solve the problems of power supply system tripping, weak processing effect, and failure to work, so as to improve the quality and quality of silicon steel rolled products, eliminate corrugated plate shape defects, and avoid skin effect of effect

A technology of electric field energy and molten steel, which is applied in the field of iron and steel metallurgy, can solve the problems of power supply system tripping, weak processing effect, and failure to work, so as to improve the quality and quality of silicon steel rolled products, eliminate corrugated plate shape defects, and avoid skin effect of effect

CN1931476AInactive Publication Date: 2007-03-21ANGANG STEEL CO LTD
0 Cites 6 Cited by

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method of applying electric field energy on molten steel to improve quality of silicon steel billet
  • Method of applying electric field energy on molten steel to improve quality of silicon steel billet
  • Method of applying electric field energy on molten steel to improve quality of silicon steel billet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] The present invention will be further described below through embodiments with reference to the accompanying drawings.

[0016] In the embodiment of the present invention, the electric field energy is applied to the liquid silicon steel molten steel of different steel types in the tundish of 5 tons to 80 tons respectively. The electric field energy is introduced into the molten steel, and the electrodes are inserted into the molten steel through the tundish cover, and the insertion depth is 200 mm to 1500 mm. The waveform of the electric field energy is a rectangular wave with variable duty ratio, the applied electric field energy is 1000J-170MJ, the voltage is 100V-1700V, the current is 100A-8KA, the frequency is ≀25Hz, and the duty ratio is 5%-90%.

[0017] The electric field energy applied by the present invention is 1000J-6000J, the voltage is 100V-500V, the current is 100A-800A, the frequency is ≀25Hz, and the duty ratio is 20%-50% when the liquid silicon steel mol...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
lengthaaaaaaaaaa
widthaaaaaaaaaa
Login to View More

Abstract

The method of applying electric field energy on molten steel to improve quality of silicon steel billet is to introduce electric field energy with the electric field energy generator and the electrodes into molten steel, the electric field energy waveform is duty ratio variable square wave of energy 1000 J-180 MJ, voltage 100-1800V, current 100A-8KA, frequency not higher than 25 Hz and duty ratio of 5-90 %. The electric field energy generator is suitable for use in industrial production and controllable in electric field energy parameters. The treated molten steel results in refined billet structure with obviously increased global crystal, less defaults and high quality.

Description

technical field [0001] The invention belongs to the technical field of iron and steel metallurgy, and in particular relates to a method for applying electric field energy to molten steel in order to improve the quality of silicon steel slabs. Background technique [0002] Due to the special composition of silicon steel and high silicon content, the coarse grain structure and dendrites of the continuous casting slab solidification structure are very developed, but the number of spherical grains in the center is very small or even almost none, so it is very difficult to roll silicon steel plates. It is prone to quality defects, especially corrugated plate shape defects. In order to solve the above defects, electromagnetic stirring and light reduction technology are usually used. In recent years, when the metal is in a completely liquid state, the technology of applying electric field energy to it to change the structure of the liquid metal and refine the solidified structure ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
21 Mar 2007
Publication
CN1931476A
IPC
B22D27/02; C22F3/02
Inventors
唐倍平; ι»„ζ΅©δΈœ