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High Ca, silicon-free aluminum calcium iron alloy for deoxidising of molten steel and its preparation method

A ferroalloy, high-calcium technology, applied in the field of ferroalloy, can solve problems such as impossible to produce high-calcium alloy, difficult to control, and calcium volatilization

Active Publication Date: 2007-12-12
本溪铸新冶炼有限公司
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  • Summary
  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

At the same time, it is difficult to control the alloy without silicon impurities by this method.
Metal aluminum, calcium and iron are used as raw materials to smelt by conventional induction furnace heat transfer method. Although silicon-free alloys can be obtained, due to the above-mentioned characteristics of calcium, calcium will also volatilize and oxidize in large quantities during the long smelting process. It is also impossible to produce high-calcium alloys with a calcium content of more than 15%

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Prepare high-calcium silicon-free aluminum-calcium-iron alloy of the present invention according to the following steps:

[0034] (1) take by weighing the raw material of a stove according to the weight ratio of 70% of steel scrap 70% of Ca15%, Al15%, C<0.05%, and the calcium wherein is sealed with plastic bag, standby;

[0035] (2) Take out the calcium in the above-mentioned plastic bag, and put it into a high-temperature resistant container with a mesh (this container can be made of a steel cylinder with graphite on the surface, a mesh is opened on the peripheral wall of the steel cylinder, and a handle is provided on the upper part) In the middle, seal the container with a plastic bag and set aside;

[0036] (3) Aluminum is melted in a high-frequency induction furnace, and then scrap steel is added to melt into aluminum-iron metal liquid;

[0037] (4) The above-mentioned high-temperature-resistant container with calcium is taken out from the plastic bag, and the con...

Embodiment 2

[0042] The preparation method is the same as that of Example 1, except that in the step (1) the burden is weighed by weight Ca15%, Al30%, Fe55%. Finally, the aluminum-calcium-iron alloys with component contents of Ca15%, Al30%, and Fe55% are respectively prepared. The number is 2# alloy.

Embodiment 3

[0044] The preparation method is the same as that of Example 1, except that in the step (1) the burden is weighed by weight Ca30%, Al30%, Fe40%. Finally, a high-calcium silicon-free aluminum-calcium-iron alloy with component contents of Ca30%, Al30%, and Fe40% is obtained. The number is 3# alloy.

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PUM

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Abstract

The invention discloses calcium-aluminium- ferrum alloy for steel- melting and deoxidizing, the weight proportion of them is as follows: 15% C21C 7 / 06 C22C 33 / 04 C22C 33 / 06 0 6 1 2007 / 7 / 16 101086029 2007 / 12 / 12 100475980 2009 / 4 / 8 2009 / 4 / 8 2009 / 4 / 8 Guo Qingcheng Liaoning 117100 Guo Qingcheng Fan Songtao

Description

1. Technical field [0001] The invention relates to an iron alloy, in particular to a high-calcium silicon-free aluminum-calcium-iron alloy for final deoxidation of low-silicon and low-carbon aluminum-killed steel and a preparation method thereof. 2. Background technology [0002] Since the 1990s, my country's steelmaking process has undergone fundamental changes, and the follow-up processing has also continued to extend, forming molten iron pretreatment→top-bottom double blowing converter steelmaking→LF, RH refining→continuous casting→hot rolling →Cold rolling→galvanizing→coating is a complete process route. At the same time, the proportion of deep-drawing steel and ultra-deep-drawing steel (such as automobile surface plate steel, container steel, etc.) is also increasing. [0003] For the smelting of low-silicon and low-carbon aluminum-killed steel used to produce thin-gauge cold-rolled deep-drawing products, metal aluminum (or aluminum-iron alloy) is mostly used as a deoxi...

Claims

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Application Information

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IPC IPC(8): C21C7/06C22C33/04C22C33/06
Inventor 郭庆成范松涛
Owner 本溪铸新冶炼有限公司
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