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A method for smelting 10cr11co3w3nimovnbnb low-carbon, low-silicon, low-aluminum, high-boron steel

A smelting method, low-carbon and low-silicon technology, applied in the field of iron and steel metallurgy, can solve the problems of high smelting cost and unstable steel ingot quality, and achieve the effect of low cost and stable quality

Active Publication Date: 2018-02-16
四川丰元机械制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing smelting cost of this steel is high, and the quality of the obtained steel ingot is not stable

Method used

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  • A method for smelting 10cr11co3w3nimovnbnb low-carbon, low-silicon, low-aluminum, high-boron steel
  • A method for smelting 10cr11co3w3nimovnbnb low-carbon, low-silicon, low-aluminum, high-boron steel
  • A method for smelting 10cr11co3w3nimovnbnb low-carbon, low-silicon, low-aluminum, high-boron steel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] The present embodiment smelting steps are:

[0058] S1, raw material selection, select pig iron, magnetically separated iron, slag steel and scrap steel, wherein, the content of pig iron is 30 parts, magnetically separated iron is 10 parts, slag steel is 20 parts, scrap steel is 20 parts,

[0059] The selected raw material components meet the requirements of Table 1 and Table 2 by weight percentage:

[0060] Table 1 Raw material composition 1

[0061]

P percentage content

S percentage content

As percentage content

Percentage of Sn

pig iron

≤0.050

≤0.060

≤0.020

≤0.010

Magnetic iron

≤0.060

≤0.060

≤0.020

≤0.010

Slag Steel

≤0.020

≤0.020

≤0.020

≤0.010

scrap steel

≤0.020

≤0.020

≤0.020

≤0.010

[0062] Table 2 Raw material composition 2

[0063]

Percentage of Pb

Percentage of Sb

Bi percentage content

Cu percentage

pig iron

≤0.015

≤0.01...

Embodiment 2

[0106] The present embodiment smelting steps are:

[0107] S1, raw material selection, select pig iron, magnetically separated iron, slag steel and scrap steel, wherein, the content of pig iron is 35 parts, magnetically separated iron is 15 parts, slag steel is 25 parts, scrap steel is 25 parts,

[0108] The selected raw material components meet the requirements of Table 1 and Table 2 by weight percentage:

[0109] Table 1 Raw material composition 1

[0110]

P percentage content

S percentage content

As percentage content

Percentage of Sn

pig iron

≤0.050

≤0.060

≤0.020

≤0.010

Magnetic iron

≤0.060

≤0.060

≤0.020

≤0.010

Slag Steel

≤0.020

≤0.020

≤0.020

≤0.010

scrap steel

≤0.020

≤0.020

≤0.020

≤0.010

[0111] Table 2 Raw material composition 2

[0112]

Percentage of Pb

Percentage of Sb

Bi percentage content

Cu percentage

pig iron

≤0.015

≤0....

Embodiment 3

[0156] The present embodiment smelting steps are:

[0157] S1, raw material selection, select pig iron, magnetically separated iron, slag steel and scrap steel, wherein, the content of pig iron is 40 parts, magnetically separated iron is 20 parts, slag steel is 30 parts, scrap steel is 30 parts,

[0158] The selected raw material components meet the requirements of Table 1 and Table 2 by weight percentage:

[0159] Table 1 Raw material composition 1

[0160]

P percentage content

S percentage content

As percentage content

Percentage of Sn

pig iron

≤0.050

≤0.060

≤0.020

≤0.010

Magnetic iron

≤0.060

≤0.060

≤0.020

≤0.010

Slag Steel

≤0.020

≤0.020

≤0.020

≤0.010

scrap steel

≤0.020

≤0.020

≤0.020

≤0.010

[0161] Table 2 Raw material composition 2

[0162]

Percentage of Pb

Percentage of Sb

Bi percentage content

Cu percentage

pig iron

≤0.015

≤0....

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Abstract

The invention belongs to the technical field of ferrous metallurgy, and particularly relates to a smelting method for 10Cr11Co3W3NiMoVNbNB low-carbon low-silicon low-aluminum high-boron steel. The smelting method provides a smelting technique for the low-carbon low-silicon low-aluminum and high-boron steel with very high smelting difficulty; the low-carbon low-silicon low-aluminum and high-boron steel is smelted in an ordinary steel ladle refining furnace and an electroslag heavy furnace; and surface porosity of electroslag ingots is controlled. By adopting the smelting method, components of master ingots and the electroslag steel ingots can be well stabilized; fluctuation of components of the inner part, the outer part, the upper part and the lower part of a steel ingot is small; and requirement of users on the special steel can be well met.

Description

technical field [0001] The invention belongs to the technical field of iron and steel metallurgy, in particular to a method for smelting 10Cr11Co3W3NiMoVNbNB low-carbon, low-silicon, low-aluminum, high-boron steel. Background technique [0002] In the smelting of iron and steel materials, the production of low-carbon, low-silicon, low-aluminum, and high-boron steel is relatively difficult, especially the control of the composition of the ingot (such as boron) and the porosity of the ingot is very important. Boron is added to improve the hardenability of the steel during quenching and tempering. To achieve the purpose of consistent internal and external structure and uniform performance of steel. Generally, the amount of boron-containing steel added is very small (boron content 0.0003% to 0.005%). Adding boron to steel can significantly save expensive alloying elements such as nickel, chromium, and molybdenum, and has considerable economic benefits. The main advantage of bo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C33/06C21C5/52C21C7/06C21C7/10C22B9/18C22C38/02C22C38/04C22C38/44C22C38/52C22C38/46C22C38/48C22C38/54C22C38/06
CPCC21C5/005C21C7/0006C21C7/06C21C7/10C21C2007/0018C22B9/18C22C33/06C22C38/001C22C38/02C22C38/04C22C38/06C22C38/44C22C38/46C22C38/48C22C38/52C22C38/54Y02P10/20
Inventor 余佑祥黄生权崔建强唐政良杨勇
Owner 四川丰元机械制造有限公司