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Ceramic quenched and tempered steel and preparation method thereof

A technology of ceramics and molten steel, applied in the field of ceramic quenched and tempered steel and its preparation, can solve the problem of high cost and achieve the effect of not being prone to fatigue cracks, high strength and hardness

Inactive Publication Date: 2019-12-31
ANHUI POLYTECHNIC UNIV MECHANICAL & ELECTRICAL COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these steel types require a lot of trace elements, and the cost is relatively high

Method used

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  • Ceramic quenched and tempered steel and preparation method thereof
  • Ceramic quenched and tempered steel and preparation method thereof
  • Ceramic quenched and tempered steel and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A kind of ceramic modulation steel, including the following raw materials in weight percentage: scrap steel (not limited by materials) 71.5%, kaolin 3%, bauxite 5%, quartz sand 5%, mica (series) 1%, bentonite 1%, blue 1% spar, 1% barite, 1% calcite, 1% graphite, 1% fluorite, 1% feldspar, 1% mullite, 1% SiC, 1% zeolite, 1% wollastonite, spinel Stone 1%, crystal stone 1.5%, bauxite 1%.

[0036] The preparation method of the ceramic modulated steel comprises the following steps:

[0037] (1) Add the raw materials in formula quantities other than scrap steel into the intermediate frequency electric furnace or electric arc furnace, and add scrap steel one after another as the raw materials continue to melt; and add covering agent or slagging agent during the melting process to avoid steel The liquid is directly in contact with the air; metals that are difficult to melt and are not easy to oxidize or burn are put into the bottom of the crucible, and small pieces of scrap ste...

Embodiment 2

[0048] A kind of ceramic modulation steel, including the following raw materials in weight percentage: scrap steel (not limited by material) 70%, kaolin 3%, bauxite 3%, quartz sand 4%, mica (series) 2%, bentonite 2%, blue 1% spar, 1% barite, 1% calcite, 1% graphite, 2% fluorite, 1% feldspar, 2% mullite, 1% SiC, 1% zeolite, 1% wollastonite, spinel Stone 1%, crystal stone 1%, bauxite 2%.

[0049] The preparation method of the ceramic modulated steel comprises the following steps:

[0050] (1) Add the raw materials in formula quantities other than scrap steel into the intermediate frequency electric furnace or electric arc furnace, and add scrap steel one after another as the raw materials continue to melt; and add covering agent or slagging agent during the melting process to avoid steel The liquid is directly in contact with the air; metals that are difficult to melt and are not easy to oxidize or burn are put into the bottom of the crucible, and small pieces of scrap steel ar...

Embodiment 3

[0061] A kind of ceramic modulation steel, including raw materials in the following weight percentages: scrap steel (not limited by materials) 72%, kaolin 2%, bauxite 3%, quartz sand 5%, mica (series) 1%, kyanite 1% , barite 1%, calcite 1%, fluorite 1%, feldspar 1%, mullite 1%, SiC 1%, zeolite 1%, wollastonite 3%, spinel 1%, bentonite 1%, Graphite 1%, crystal stone 1%, bauxite 2%.

[0062] The preparation method of the ceramic modulated steel comprises the following steps:

[0063] (1) Add the raw materials in formula quantities other than scrap steel into the intermediate frequency electric furnace or electric arc furnace, and add scrap steel one after another as the raw materials continue to melt; and add covering agent or slagging agent during the melting process to avoid steel The liquid is directly in contact with the air; metals that are difficult to melt and are not easy to oxidize or burn are put into the bottom of the crucible, and small pieces of scrap steel are add...

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Abstract

The invention discloses ceramic quenched and tempered steel and a preparation method thereof. The ceramic quenched and tempered steel comprises, by weight, 70-80% of scrap steel, 2-3% of kaolin, 3-5%of bauxite, 3-8% of quartz sand, 1-3% of mica, 1-2% of bentonite, 1-2% of kyanite, 1-2% of barite, 1-2% of calcite, 1-2% of graphite, 1-2% of fluorite, 1-2% of feldspar, 1-2% of mullite, 0.5-1.5% of SiC, 1-2% of zeolite, 1-3% of wollastonite, 1-2% of spinel, 1-2% of crystal, and 1-2% of aluminum magnesium ore. The ceramic high-strength structural steel is prepared by replacing Fe and C main systemmaterials in existing steel with Fe and Si main system nonmetal ceramic materials, and the ceramic high-strength structural steel has good toughness, excellent welding performance, cold forming performance, low cold brittle transition temperature and good corrosion resistance.

Description

technical field [0001] The invention belongs to the field of cermet composite materials, and in particular relates to a ceramic quenched and tempered steel and a preparation method thereof. Background technique [0002] Alloy quenched and tempered steel refers to the medium carbon alloy structural steel used after quenching and tempering treatment (quenching + high temperature tempering), which is mainly used to manufacture and work under various loads (such as torsion, bending, impact, etc.), and the force is relatively complicated. , important parts that require good comprehensive mechanical properties, such as gears, shafts, connecting rods, high-strength bolts, etc. on automobiles, tractors, and machine tools. It is the main body of steel for mechanical structures. The final heat treatment of alloy quenched and tempered steel is quenched and tempered to obtain tempered sorbite structure, which has good comprehensive mechanical properties; for some impacted surface wear-...

Claims

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Application Information

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IPC IPC(8): C22C33/06C22C38/02C22C38/04C22C38/06C21D1/18
CPCC21D1/18C22C33/006C22C33/06C22C38/02C22C38/04C22C38/06
Inventor 柴知章杜宇风梁长洋
Owner ANHUI POLYTECHNIC UNIV MECHANICAL & ELECTRICAL COLLEGE
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