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

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

CN101086029AActive Publication Date: 2007-12-12本溪铸新冶炼有限公司
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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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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

Patent Timeline
12 Dec 2007
Publication
CN101086029A
IPC
C21C7/06; C22C33/04; C22C33/06
Inventors
郭庆成; 范松涛