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Wear-resistant casting steel containing boron-rich slag and preparation method thereof

A boron-rich slag and cast steel technology, applied in the field of wear-resistant cast steel, can solve problems such as waste of resources, and achieve the effects of high production efficiency, good strength and toughness, and simple process

Active Publication Date: 2015-01-28
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above-mentioned wear-resistant cast steel generally contains expensive substances such as molybdenum, nickel, vanadium, tungsten and rare earth, resulting in a huge waste of resources

Method used

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  • Wear-resistant casting steel containing boron-rich slag and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A 1000 kg intermediate frequency induction furnace is used to smelt wear-resistant cast steel containing boron-rich slag. The specific preparation process steps are:

[0022] ①First use high manganese steel waste (the chemical composition mass fraction of high manganese steel waste is: 1.0~1.4C, 11~14Mn, 0.3~0.8Si, ≤0.09P, ≤0.04S, the balance is Fe), boron-rich Slag (the chemical composition mass fraction% of boron-rich slag is: 17~20B 2 o 3 ,43~50MgO,22~28SiO 2 ,1~2Al 2 o 3 , 5~7CaO, TFe<1), high carbon ferrochrome (mass fraction % of chemical composition of high carbon ferrochrome: 60.08Cr, 6.93C, 2.18Si, 0.031S, 0.046P, Fe balance), silicon calcium barium Alloy (the chemical composition mass fraction % of silicon-calcium-barium alloy is: 40.88Si, 10.25Ca, 11.92Ba, 0.37C, 0.028P, 0.047S, the balance is Fe) and metal aluminum batching, high manganese steel waste material adds mass fraction as 83.4%, the mass fraction of boron-rich slag added is 12%, the mass fract...

Embodiment 2

[0025] A 750 kg intermediate frequency induction furnace is used to smelt wear-resistant cast steel containing boron-rich slag. The specific preparation process steps are:

[0026] ①First use high manganese steel waste (the chemical composition mass fraction of high manganese steel waste is: 1.0~1.4C, 11~14Mn, 0.3~0.8Si, ≤0.09P, ≤0.04S, the balance is Fe), boron-rich Slag (the chemical composition mass fraction% of boron-rich slag is: 17~20B 2 o 3 ,43~50MgO,22~28SiO 2 ,1~2Al 2 o 3 , 5~7CaO, TFe<1), high-carbon ferrochromium (the chemical composition mass fraction of high-carbon ferrochromium is: 64.87Cr, 7.35C, 2.74Si, 0.039S, 0.055P, the balance of Fe), silicon calcium barium Alloy (the chemical composition mass fraction % of silicon-calcium-barium alloy is: 44.70Si, 11.84Ca, 10.05Ba, 0.49C, 0.033P, 0.041S, the balance is Fe) and metal aluminum batching, high manganese steel scrap adds mass fraction as 85.75%, the mass fraction of boron-rich slag added is 10%, the mass f...

Embodiment 3

[0029] A 1000 kg intermediate frequency induction furnace is used to smelt wear-resistant cast steel containing boron-rich slag. The specific preparation process steps are:

[0030] ①First use high manganese steel waste (the chemical composition mass fraction of high manganese steel waste is: 1.0~1.4C, 11~14Mn, 0.3~0.8Si, ≤0.09P, ≤0.04S, the balance is Fe), boron-rich Slag (the chemical composition mass fraction% of boron-rich slag is: 17~20B 2 o 3 ,43~50MgO,22~28SiO 2 ,1~2Al 2 o 3 , 5~7CaO, TFe<1), high-carbon ferrochrome (the chemical composition mass fraction of high-carbon ferrochromium is: 63.04Cr, 7.16C, 2.05Si, 0.036S, 0.051P, the balance of Fe), silicon calcium barium Alloy (the chemical composition mass fraction % of silicon-calcium-barium alloy is: 43.17Si, 11.24Ca, 10.89Ba, 0.62C, 0.036P, 0.045S, the balance is Fe) and metal aluminum batching, high manganese steel scrap adds mass fraction as 84.5%, the mass fraction of boron-rich slag added is 11%, the mass fra...

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Abstract

The invention relates to a wear-resistant casting steel containing boron-rich slag and a preparation method thereof, and belongs to the field of wear-resistant casting steels. The preparation method comprises that a high-manganese steel waste material, boron-rich slag, high-carbon ferrochrome, a silicon-calcium-barium alloy and a metal aluminum component are adopted, molten steel is subjected to deoxidation slag-removing through the silicon-calcium-barium alloy and the metal aluminum, pouring and mold casting are performed, the cast is directly poured into a water tank to chill when the temperature of the cast is reduced to 980-1080 DEG C, the cast is taken out after being cooled for 1-2 h in the water tank, and riser-runner cutting and fin-burr clearing are performed to obtain the high-strength and high-toughness wear-resistant casting steel product containing boron-rich slag.

Description

technical field [0001] The invention discloses a wear-resistant cast steel and a preparation method thereof, in particular to a wear-resistant cast steel containing boron-rich slag and a preparation method thereof, belonging to the technical field of wear-resistant cast steel. Background technique [0002] Wear-resistant cast steel plays an important role in the national economy. In order to improve the wear resistance of wear-resistant cast steel, it is usually necessary to add a large amount of alloying elements. Chinese invention patent CN 103397269 discloses a high-strength wear-resistant cast steel, which is characterized in that the chemical composition and mass percentage of the cast steel are: carbon 0.10-0.16, manganese 0.35-0.50, silicon 0.75-0.90, phosphorus ≤ 0.040, sulfur≤0.040, chromium 1.35-1.65, nickel 0.15-0.25, copper 0.2-0.3, Ti0.08-0.10, Ta0.04-0.06, Hf0.01-0.02, Nb0.04-0.06, V0.2-0.4 , Mo0.05-0.07, the matrix is ​​iron. The mechanical properties of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/38C22C33/04
Inventor 符寒光胡伟雷永平杨晓军匡加才秦广胜谢炜秦志华
Owner BEIJING UNIV OF TECH