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A kind of smelting process of master alloy containing phosphorus and carbon

A master alloy and process technology, which is applied in the field of master alloy smelting technology, can solve the problems such as difficult to obtain master alloy, and achieve the effect of excellent amorphous forming performance, good amorphous forming ability, and simple preparation method

Active Publication Date: 2018-01-23
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, under the premise of ensuring a certain atomic content of P element, it is difficult to obtain a master alloy with uniform distribution of phosphorus and carbon.

Method used

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  • A kind of smelting process of master alloy containing phosphorus and carbon
  • A kind of smelting process of master alloy containing phosphorus and carbon
  • A kind of smelting process of master alloy containing phosphorus and carbon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment (1

[0049] This example uses factory-produced raw materials.

[0050] Add low-carbon steel, industrial FeB, and pig iron together into an electric arc furnace for melting to form the first pre-alloyed molten liquid, wherein the mass ratio of low-carbon steel, industrial FeB, and pig iron is 12.8:1:2.3, and the melting temperature is 1450 ℃ or so. Then remove S, Al, Ti, Zr impurities from the first pre-alloyed molten liquid.

[0051] The industrial FeP is refined to reduce the contents of Mn and S to obtain refined FeP. The refined FeP is mixed with the first pre-alloyed molten liquid after removing impurities according to the mass ratio of 8.6:100, and the alloy is melted in an electric furnace. The melting temperature is about 1250°C. During the smelting process, argon is blown from the bottom and vacuum is drawn from the top, so as to reduce the gas content in the second pre-alloyed molten liquid and make the second pre-alloyed molten liquid more uniform.

[0052] After the ...

Embodiment (2

[0056] This example uses factory-produced raw materials.

[0057] Add industrial pure Fe, industrial FeB, and graphite together into an electric arc furnace for melting to form the first pre-alloyed molten liquid, wherein the mass ratio of industrial pure Fe, industrial FeB, and graphite is 316:53.4:1, and the melting temperature is 1470 ℃.

[0058] The industrial FeP is mixed with the first pre-alloyed melt at a mass ratio of 1:11, and the alloy is smelted in a high-frequency induction furnace under the protection of vacuum argon. The melting temperature is about 1260°C.

[0059] After smelting evenly, pour it into a suitable mold and cool it into a master alloy ingot.

[0060] The master alloy ingot is smelted for the second time, and after re-melting, it is sprayed onto the high-speed rotating copper roller through the two-pack or three-pack method to obtain the alloy strip.

[0061] Performance tests were performed on the obtained alloy strip. Specifically, X-ray diffr...

Embodiment (3

[0063] This example uses factory-produced raw materials.

[0064] Add industrial pure Fe and medium-high carbon steel together into the electric arc furnace for melting to form the first pre-alloyed molten liquid, in which the mass ratio of industrial pure Fe and medium-high carbon steel is 1.56:1, and the melting temperature is about 1600°C.

[0065] Industrial FeP, industrial FeB, and Si are pre-alloyed and smelted repeatedly in an electric arc furnace to obtain a smelting mixture. Among them, the mass ratio of industrial FeP, industrial FeB, and Si is 12.7:20.1:1, and the melting temperature is about 1350°C.

[0066] The smelting mixed liquid is mixed with the first pre-alloyed molten liquid at a mass ratio of 3.6:1, and the alloy is smelted in a high-frequency induction furnace under the protection of vacuum argon. The melting temperature is 1260°C.

[0067] After smelting evenly, pour it into a suitable mold and cool it into a master alloy ingot. The master alloy is sm...

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Abstract

The present invention relates to a smelting process of a master alloy containing phosphorus and carbon, which comprises the following steps: (1) mixing and melting an iron source and a carbon source at a first temperature to form a first pre-alloy melt, and make the first pre-alloy The mass content of each element of S, Al, Ti, Zr in the alloy melt is not more than 0.05%, wherein the first temperature is 1400°C-1600°C; (2) cooling the first pre-alloy melt to the second temperature, and adding a phosphorus source to the first pre-alloyed molten liquid for smelting to form a second pre-alloyed molten liquid, so that the mass content of each element of S, Al, Ti, and Zr in the second pre-alloyed molten liquid is not more than 0.05%, Wherein the second temperature is 1200°C-1350°C; additives are added to the second pre-alloyed molten liquid to form slagging and slagging off, and a master alloy containing phosphorus and carbon is obtained after filtering. The present invention also provides a master alloy containing phosphorus and carbon obtained by the above smelting process.

Description

technical field [0001] The invention relates to the technical field of smelting, in particular to a smelting process of a master alloy containing phosphorus and carbon. Background technique [0002] The smelting of the master alloy is an important step in the preparation of the alloy. Whether the smelting degree is evenly dispersed is crucial to the subsequent processing and application of the material. [0003] In the preparation process of magnetic amorphous alloy, phosphorus element (P) and carbon element (C) can be used as amorphous forming elements to improve the amorphous forming ability of the alloy, so that the performance of the alloy can be further improved. However, due to the high melting point of C, as high as more than 3600 degrees Celsius, the melting point of C is much higher than that of other components during the smelting process. Due to the small atomic radius, the solubility of C in other elements decreases with temperature. Therefore, how to disperse C...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C35/00C22C33/04
Inventor 赵成亮常春涛门贺王安定王新敏贺爱娜岳士强
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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