Electromagnetic stirring water-cooled mold and method for pouring steel ingot

A technology of electromagnetic stirring and electromagnetic stirrer, which is applied in the field of iron and steel smelting, can solve the problems of low equiaxed crystal rate of steel ingots and the like

Inactive Publication Date: 2012-12-26
孙柏良
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the new steel ingot water-cooled pouring mold and method with the application number 201210180527.8, the molten steel "statically" crystallizes into a solid in the mold body (cooling in the mold body for 10-15 minutes and moving into a slow cooling hood

Method used

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  • Electromagnetic stirring water-cooled mold and method for pouring steel ingot
  • Electromagnetic stirring water-cooled mold and method for pouring steel ingot
  • Electromagnetic stirring water-cooled mold and method for pouring steel ingot

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Effect test

Embodiment 1

[0024] The electromagnetic stirring water-cooled mold of the present invention is composed of an attached plate 1 , a mold body 2 and a thermal insulation cap 3 , the mold body 2 is fixed on the attached plate 1 by clamps 7 , and the attached plate 1 is installed on the chassis 8 . There is only a first-level mold body on the attached plate, and the upper opening of the mold body 2 is embedded with a heat preservation cap 3. The inner wall of the mold body 2 is a cylindrical structure with a top diameter slightly smaller than the bottom diameter. Cooling water jacket 4, the gap of the jacket wall is 5-30mm and the gap of the cavity gradually increases from bottom to top, the cooling water in the cooling water jacket is high-level water, the outlet water pressure of the jacket is greater than 0.05MPa, the water quality for soft water. And the two ends of the cooling water jacket 4 are provided with inlets a and b for cooling water. An electromagnetic stirrer 9 is closely attac...

Embodiment 2

[0041] The method for pouring steel ingots with electromagnetic stirring water-cooled molds of the present invention utilizes water-cooled casting molds to carry out the following steps:

[0042] (1) Put mold powder at the bottom of the mold;

[0043] (2) Turn on the cooling water system and check whether the outlet water pressure is greater than 0.05MPa;

[0044] (3) When pouring, the superheat of molten steel is controlled at (50-80) ℃, the pouring speed of the ingot body is controlled at (10-50) cm / min, and the speed of the cap mouth is smaller than that of the ingot body. When the liquid level rises above the reinforcement hole and the pendant Stop pouring under the structure, and then put heat insulating agent and heating agent on the liquid surface;

[0045] (4) When the liquid level rises to more than 2 / 3 of the height, turn on the electromagnetic stirrer (9). by figure 1 For example, first open the lower electromagnetic stirrer 9 (2), the electromagnetic stirrer 9 (...

Embodiment 3

[0049] Such as figure 2 As shown, a steel ingot below 10 tons is poured with an electromagnetic stirrer, and a typical mold steel H13 is poured, and a 10-ton water pours one. The molten steel is H13 which has been refined by 10 tons of LF and treated by VD. The choice of the chassis for the masonry of the flow steel channel, the materials used, and the technical requirements are equivalent to the technical literature with the patent name: New steel ingot water-cooled casting mold and method, and patent number: 201210180527.8. The bottom brick of the mold attached to the plate is inlaid with the chassis, and the insulation cap is installed with the same name. The name is: new steel ingot water-cooled casting mold and method, and the patent number is: 201210180527.8. T. Turn on the cooling water system before pouring. The water supply system is provided by the high-level water tank, and the water quality is soft water. It is pumped into the high-level water tank by the ground ...

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Abstract

The invention discloses an electromagnetic stirring water-cooled mold and a method for pouring a steel ingot, belonging to the field of steel and iron smelting. The electromagnetic stirring water-cooled mold consists of a base plate, an auxiliary plate, a mold body and a heat preservation cap, wherein the heat preservation cap is embedded and inserted into an upper port of the mold body; an annular gap of the upper port of the heat preservation cap is filled with filler sand; a heat insulating plate of the heat preservation cap is provided with a reinforcing hole; a cooling water jacket is arranged along the circumference of the mold body; the gap of the cavity of the jacket is increasingly expanded from bottom to top; and an electromagnetic stirrer is arranged along the circumference of the mold body. The method for pouring the steel ingot of the electromagnetic stirring water-cooled mold comprises the following steps of: filling casting powder at the bottom of the mold; opening a cooling water system; controlling pouring speed of molten steel of the ingot body to be (10-50) cm/min; when the liquid level rises to over 2/3 of the height, turning on the electromagnetic stirrer; and when the liquid level rises to the space above the reinforcing hole and below a hanger structure, stopping pouring. By using the device, the electromagnetic stirrer is turned on during pouring and crystallization of the molten steel, and the molten steel is dynamically crystallized into solid. Compared with the original technology, the equiaxed crystal ratio of the steel ingot is further improved, the stirring strength and the micro-adjustment stirring method are properly set according to different steel types, and an ideal equiaxed crystal ratio can be achieved; and a finished product of the steel ingot is uniform in composition and the grain is refined, so that the quality of the steel ingot is greatly improved.

Description

technical field [0001] The invention belongs to the field of iron and steel smelting, in particular to an electromagnetic stirring water-cooled mold and a method for pouring steel ingots. Background technique [0002] In the new steel ingot water-cooled pouring mold and method with the application number 201210180527.8, the molten steel "statically" crystallizes into a solid in the mold body (cooling in the mold body for 10-15 minutes and moving into a slow cooling hood to cool), the crystallization method of the steel ingot makes The equiaxed grain rate of the steel ingot is low, and the center looseness and deflection are unavoidable. The quality of this steel ingot cannot be compared with the electroslag remelted steel ingot. Contents of the invention [0003] In view of the above problems, the present invention provides a method for electromagnetically stirring water-cooled molds and pouring steel ingots, allowing the steel ingots to crystallize in a "moving" state, se...

Claims

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Application Information

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IPC IPC(8): B22D7/06B22D7/12B22D27/02B22D27/04B22D7/00
Inventor 孙柏良
Owner 孙柏良
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