Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of manganese-based MnAlSiTi alloy with high titanate content

A silicon-manganese alloy and alloy technology, applied in the field of manganese-based high-titanium content MnAlSiTi alloy and its preparation, can solve the problems of reduced alloying effect of composite deoxidizer, insignificant advantages of diversification of alloy elements, and pulverization of the overall structure of the alloy, etc. , to achieve the effects of easy polymerization, growth and exclusion, improvement of impurity removal rate, and stable alloy structure

Inactive Publication Date: 2013-03-20
重庆中盛裕康冶金有限公司
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the content of titanium in the alloy is low, most of the titanium elements in the alloy will form high-temperature stable compounds, so that the effective control of alloy elements will be lost during steelmaking, and the alloying effect of the composite deoxidizer will be greatly reduced
The Chinese patent CN1908195A uses the carbon content in the alloy to be less than or equal to 0.08% to prevent alloy powdering, but in the actual preparation process, controlling too low carbon content will increase the cost of manufacturing
Chinese patent CN101191172 measures to prevent alloy pulverization by controlling the carbon content <0.3%, and directly using metal manganese to replace high-carbon ferromanganese or medium-carbon ferromanganese. Although the carbon content requirement is lower than that of patent CN1908195A, direct use of metal manganese will greatly increase production cost
The technical solution to the problem of alloy pulverization proposed by the above-mentioned patents does not really solve the problem of alloy pulverization. The new point of view is that a small amount of Al 3 C 4 CH produced by hydrolysis 4 The gas can only increase the local stress of the alloy and cause cracks in the alloy, but it cannot cause the overall structure of the alloy to fail and be pulverized; the real reason for the pulverization is that there are a large number of alumina particles produced by the large amount of oxidation of Al at high temperature, and they are distributed at the same time. Because the interior of the alloy matrix and the grain boundary are not immediately removed, the interaction between the alumina inclusions and the alloy phase during the solidification process of the alloy leads to pulverization; at the same time, there are high costs, no obvious advantages in the diversification of alloy elements, and weak deoxidation ability. question

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
  • Preparation method of manganese-based MnAlSiTi alloy with high titanate content
  • Preparation method of manganese-based MnAlSiTi alloy with high titanate content

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Raw materials: 1000 kg of MnAlSiTi alloy is smelted, and the burning loss of raw materials is considered as 3%. The ratio is: 5 kg of scrap aluminum scraps, 150 kg of pure aluminum, 220 kg of ferro-titanium, and 655 kg of FeMn64Si16 alloy; the weight of the slagging agent is 10% by weight of raw materials, calcium oxide 75kg, silicon oxide 25kg, calcium fluoride 3kg, slag alkalinity 3.

[0028] (2) Raw material smelting:

[0029] A: Add slagging agent to the bottom of the smelting furnace, and add 10% of the raw material scrap aluminum;

[0030] B: After the waste aluminum chips added in step A are completely melted, add ferro-titanium, silicon-manganese alloy and the remaining waste aluminum chips;

[0031] C: After the ferrotitanium, silicomanganese alloy and remaining waste aluminum chips added in step B are completely melted, add pure aluminum block;

[0032] D: After the added raw materials are fully smelted, calm down for 3-5 minutes, remove slag, and pour i...

Embodiment 2

[0038] (1) Raw materials: 5000 kg of MnAlSiTi alloy is smelted, and the burning loss of raw materials is considered as 2%. The ratio is: scrap aluminum scrap 30 kg, pure aluminum 650 kg, titanium iron 1000 kg, FeMn68Si18 alloy 3420 kg; the weight of slagging agent is 5% by weight of raw materials, calcium oxide 135kg, magnesium oxide 50kg, silicon oxide 60kg, calcium fluoride 10kg, slag basicity 3.1.

[0039] Other steps are as described in Example 1.

[0040] The mass percentages of the components in the MnAlSiTi alloy prepared in this example are: Mn: 46.0%, Al: 14.3%, Si: 14.2%, Ti: 5.7%, and the rest are Fe and impurities.

Embodiment 3

[0042] (1) Raw materials: smelting 20,000 kg of MnAlSiTi alloy, the burning loss of raw materials is considered as 1%, and the ratio is: 200 kg of waste aluminum scraps, 2,000 kg of pure aluminum, 2,000 kg of ferrotitanium, and 16,000 kg of FeMn67Si23 alloy; the weight of slagging agent is 3% by weight of raw materials, calcium oxide 350kg, magnesium oxide 100kg, silicon oxide 120kg, calcium fluoride 36kg, slag alkalinity 3.75.

[0043] Other steps are as described in Example 1.

[0044] The mass percentages of the components in the MnAlSiTi alloy prepared in this example are: Mn: 53.3%, Al: 12.0%, Si: 16.2%, Ti: 3.0%, and the rest are Fe and impurities.

[0045] The yield of aluminum, manganese and titanium in the manganese-based MnAlSiTi alloy with high titanium content produced by the method of the present invention is high, and it will not be pulverized even if it is stored for 6 months under natural conditions, thereby meeting the requirements of industrial applications a...

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

No PUM Login to View More

Abstract

The invention discloses a manganese-based MnAlSiTi alloy with high titanate content. The MnAlSiTi alloy contains the following chemical components in percent by mass: 40-55% of Mn, 12-18% of Al, 13-22% of Si, 1-2% of Ti and the balance of Fe and impurity elements. The preparation method comprises the following steps of: weighing aluminium scraps, ferrotitanium, pure aluminium, a silicon manganese alloy and a slag former according to the requirement of simple substance elements, sequentially adding the aluminium scrap, the ferrotitanium, the pure aluminium, the silicon manganese alloy and the slag former into an induction furnace to be smelted; and solidifying by adopting a slow-fast-slow way. The alloy prepared by the invention has high manganese content and high titanate content, the range of charging content of raw material carbon and other impurity elements can be widened, and the cost is low; and the prepared alloy can be stored under various weather conditions with stable structure and without pulverization. The alloy has the advantages of high deoxidizing capacity, high impurity removing rate, good alloying effect, high fatigue resistance and high earthquake resistance.

Description

technical field [0001] The invention relates to the technical field of master alloys for steelmaking, in particular to a manganese-based MnAlSiTi alloy with high titanium content and a preparation method thereof. The alloy can be used for deoxidation and alloying of molten steel such as shock-resistant steel, stainless steel, and titanium-containing steel. Background technique [0002] As an essential raw material in steelmaking, manganese-based master alloys are closely related to the development of the steel industry. In the context of the rapid development of my country's steel industry, the demand for manganese-based master alloys has increased sharply. However, under the influence of the global financial crisis in 2008, my country's iron and steel industry faced major development issues such as overcapacity, energy conservation and emission reduction, and industrial restructuring. Iron and steel enterprises began to focus on low-carbon, green, environmental protection, ...

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 Patents(China)
IPC IPC(8): C22C22/00C22C1/03
Inventor 朱子宗谢泽伟沈勇玲
Owner 重庆中盛裕康冶金有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products