Unlock instant, AI-driven research and patent intelligence for your innovation.

High deoxidation rate aluminum silicon manganese compound deoxidizer

A compound deoxidizer and high deoxidation rate technology, applied in the field of metallurgy, can solve the problems of low deoxidation efficiency of the deoxidizer, achieve the effect of reducing the nodulation degree of the nozzle, wide application prospects, and increasing the density

Inactive Publication Date: 2015-04-08
SHANGHAI INST OF TECH
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the above-mentioned technical problems in the prior art, the present invention provides a high deoxidation rate aluminum-silicon-manganese composite deoxidizer, which solves the problem of deoxidation in the prior art The technical problem of low deoxidation efficiency

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High deoxidation rate aluminum silicon manganese compound deoxidizer
  • High deoxidation rate aluminum silicon manganese compound deoxidizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The composition of the Si-Mn-Al composite deoxidizer prepared according to the method of the present invention is 42.07%Si-37.85%Mn-20.08%Al, and other elements are restricted as shown in Table 1.

[0015] Table 1 Limits of other elements in deoxidizer

[0016]

[0017] The invention uses industrial silicon, industrial pure aluminum and metal manganese as raw materials, calculates the required raw materials according to the configuration requirements, melts them in an electric furnace at a melting temperature of 1420-1550°C, and then comes out of the furnace and casts them into different block sizes according to user needs. block deoxidizer tablets. In the deoxidation process of stainless steel and aluminum-killed steel, the deoxidizer is directly put into molten steel to complete the deoxidation process. The input amount is determined according to the initial oxygen content in molten steel and the amount of molten steel. The amount added is generally 0.5-2 kg / t m...

Embodiment 2

[0019] The composition of the Si-Mn-Al composite deoxidizer prepared according to the method of the present invention is 42.07% Si, 37.85% Mn, 20.08% Al, and other element restrictions are shown in Table 1.

[0020] The preparation method is the same as in Example 1.

Embodiment 3

[0022] The composition of the Si-Mn-Al composite deoxidizer prepared according to the method of the present invention is 34.08% Si, 50.92% Mn, 15.00% Al, and other element restrictions are shown in Table 1.

[0023] The preparation method is the same as in Example 1.

[0024] Table 2 The deoxidation results of 304 stainless steel with this deoxidizer

[0025]

[0026] In the laboratory, the deoxidizer with the above three components is used, and the addition amount is 3.5 kg / t of molten steel. The deoxidation results of 304 stainless steel are shown in Table 2. Table 2 also lists the comparative experimental results of deoxidizing 304 stainless steel with the same amount of pure Al and pure Si as deoxidizers.

[0027] As can be seen from the results in Table 2, although the Al content of the composite deoxidizer prepared by the present invention is very low, lower than 21%, its deoxidation ability is not much different from that of the pure Al deoxidizer, and is much hig...

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
densityaaaaaaaaaa
Login to View More

Abstract

The invention provides a high deoxidation rate aluminum silicon manganese compound deoxidizer composed of silicon, manganese and aluminum, and the deoxidizer comprises 30%-45% by mass of silicon, 35%-56% by mass of manganese and 10%-21% by mass of aluminum. The invention also provides a preparation method of the compound deoxidizer, and the method is as follows: weighing the silicon, manganese and aluminum according to the mass percentage, then adding the silicon, manganese and aluminum into an electric furnace to smelt in the electric furnace at the smelting temperature of 1420-1550 DEG C, then discharging, and casting into a massive deoxidizer ingot. The compound deoxidizer not only can be equal to pure aluminum in deoxidation capability, and to be more important, the compound deoxidizer can change inclusion type, reduces inclusion melting point, and has high density.

Description

technical field [0001] The invention belongs to the field of metallurgy, in particular to a composite deoxidizer for steelmaking, in particular to an aluminum-silicon-manganese composite deoxidizer with a high deoxidation rate. Background technique [0002] At present, most of the final deoxidizers used in stainless steel smelting are Fe-Si-Al composite deoxidizers, pure aluminum deoxidizers or deoxidizers containing alkali metals, such as Al-Si-Ca alloys. [0003] Stainless steel is deoxidized by a deoxidizer with high Al content, and a large amount of Al will be produced in molten steel 2 o 3 , aluminate, aluminum chromium and aluminum magnesium spinel inclusions, these hard and brittle non-deformable inclusions are the main reasons for shortening the fatigue life of stainless steel and reducing fatigue strength and surface quality. Using a high-aluminum deoxidizer for final deoxidation, due to insufficient reduction or insufficient time, the reduction products are too...

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
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C21C7/06
Inventor 李金光陈建斌栾怀壮陈麒忠胡继业疏伟邱仁杰
Owner SHANGHAI INST OF TECH