High strength wear-resisting cast medium carbon steel and preparation method thereof

A high-strength, carbon steel technology, applied in the field of cast steel, can solve the problems of wear resistance, hardness, rust resistance, corrosion resistance, high and low temperature resistance, brittleness, toughness, etc., and achieve low production cost, High hardness, good high temperature wear resistance

Active Publication Date: 2015-06-10
伟成金属制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although cast steel technology has been greatly developed, there are still many problems, such as wear resistance, hardness, rust resistance, corrosion resistance, high and low temperature resistance, brittleness, toughness, cost, etc. Can not meet the requirements of production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A high-strength wear-resistant cast medium-carbon steel, the chemical composition and mass percentage of the cast medium-carbon steel are: carbon 0.32%, silicon 0.60%, manganese 0.80%, chromium 1.20%, boron 0.06%, titanium 0.06%, N 0.10%, P≤0.01%, S≤0.01%, and the balance is iron.

[0028] The preparation method of the high-strength wear-resistant casting medium carbon steel comprises the following steps:

[0029] (1) obtain molten steel by smelting multi-element alloy cast steel in electric furnace by the chemical composition of carbon steel in above-mentioned casting;

[0030] (2) When the molten steel temperature reaches 1600°C, add 1.6% aluminum metal, 1.4% ferrosilicon, 5.5% ferroboron and 0.2% ferrotitanium in the mass fraction of molten steel in turn, then heat up the molten steel to 1700°C and keep warm After 4 hours, it is out of the furnace, and the molten steel is poured into the ladle;

[0031] (3) Crush the rare earth magnesium ferrosilicon, silicon calci...

Embodiment 2

[0036] A high-strength wear-resistant cast medium-carbon steel, the chemical composition and mass percentage of the cast medium-carbon steel are: carbon 0.38%, silicon 0.55%, manganese 0.95%, chromium 1.05%, boron 0.08%, titanium 0.08%, N 0.15%, P≤0.01%, S≤0.01%, and the balance is iron.

[0037] The preparation method of the high-strength wear-resistant casting medium carbon steel comprises the following steps:

[0038] (1) obtain molten steel by smelting multi-element alloy cast steel in electric furnace by the chemical composition of carbon steel in above-mentioned casting;

[0039] (2) When the temperature of molten steel reaches 1650°C, add 1.8% aluminum metal, 1.2% ferrosilicon, 5.0% ferroboron and 0.3% ferrotitanium in the mass fraction of molten steel in turn, then raise the temperature of molten steel to 1730°C and keep warm After 4 hours, it is out of the furnace, and the molten steel is poured into the ladle;

[0040] (3) Crush the rare earth magnesium ferrosilico...

Embodiment 3

[0045] A high-strength wear-resistant cast medium-carbon steel, the chemical composition and mass percentage of the cast medium-carbon steel are: 0.45% carbon, 0.60% silicon, 0.80% manganese, 1.20% chromium, 0.12% boron, 0.12% titanium, N 0.20%, P≤0.01%, S≤0.01%, and the balance is iron.

[0046] The preparation method of the high-strength wear-resistant casting medium carbon steel comprises the following steps:

[0047] (1) obtain molten steel by smelting multi-element alloy cast steel in electric furnace by the chemical composition of carbon steel in above-mentioned casting;

[0048] (2) When the molten steel temperature reaches 1650°C, add 1.8% aluminum metal, 1.4% ferrosilicon, 5.5% ferroboron and 0.4% ferrotitanium in turn in the mass fraction of molten steel, then raise the temperature of molten steel to 1750°C and keep warm After 3 hours, it is out of the furnace, and the molten steel is poured into the ladle;

[0049] (3) Crush the rare earth magnesium ferrosilicon, ...

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Abstract

The invention discloses high strength wear-resisting cast medium carbon steel and a preparation method thereof. The high strength wear-resisting cast medium carbon steel comprises the following chemical components in percentage by mass: 0.32-0.45% of carbon, 0.45-0.60% of silicon, 0.80-1.15% of manganese, 0.80-1.20% of chrome, 0.06-0.12% of boron, 0.06-0.12% of titanium, 0.10-0.20% of N, less than or equal to 0.01% of P, less than or equal to 0.01% of S and the balance of iron. The preparation method comprises the steps of: (1) smelting; (2) when the temperature of molten steel reaches 1600-1650 DEG C, sequentially adding 1.6-1.8% of metallic aluminum, 1.2-1.4% of ferrosilicon, 4.5-5.5% of ferroboron and 0.2- 0.4% of ferrotitanium according to the mass percentage of molten steel, heating the molten steel to 1700-1750 DEG C, discharging from a furnace after preserving heat for 3-4 hours, and pouring into a casting ladle; (3) carrying out micro-alloying treatment on the molten steel; (4) drossing, and pouring into a casting mold; and (5) carrying out thermal treatment. According to the preparation method disclosed by the invention, precious alloying elements such as nickel, molybdenum and vanadium are not added by reasonably setting the components in the steel, and the prepared cast medium carbon steel has the characteristics of high hardness and good high-temperature abrasion performance and is relatively low in production cost.

Description

technical field [0001] The invention relates to the technical field of cast steel, in particular to a high-strength wear-resistant cast medium carbon steel and a preparation method thereof. Background technique [0002] Cast steel is a general term for iron-based alloys used to produce castings that do not undergo eutectic transformation during solidification, and is a type of casting alloy. Cast steel is an alloy with iron and carbon as the main elements, and the carbon content is 0-2%. So far, cast steel is divided into three categories: cast carbon steel, cast low alloy steel and cast special steel. [0003] Cast carbon steel is cast steel in which carbon is the main alloying element and contains a small amount of other elements. Cast steel with a carbon content of less than 0.2% is cast low-carbon steel; For cast high carbon steel, as the carbon content increases, the strength and hardness of cast carbon steel increase. Cast carbon steel has high strength, plasticity ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/32C22C33/04
Inventor 梅百荣
Owner 伟成金属制品有限公司
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