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High-strength wear-resisting alloy steel and preparation method thereof
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An alloy steel and high-strength technology, applied in the field of alloys, can solve problems such as large volume, high cost, and complicated sintering process, and achieve the effects of simple preparation method, increased product life, and great process flexibility
Inactive Publication Date: 2015-04-29
JIYUAN JINCHENG TECH
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Problems solved by technology
[0002] The traditional manufacturing process of steel-bonded hard alloy is powder metallurgy sintering method, but due to the limitation of hand sintering equipment and manufacturing process, it is impossible to produce large-volume bows and arrows, and the sintering process is complex, long cycle, and high cost. If the volume is large and the center part cannot be burned through, defects such as pores and inclusions will increase significantly, resulting in a significant reduction in the strength of the alloy
The hard phase and binder phase in the steel-bonded cemented carbide sintered by powder metallurgy method have weak bonding force between the two phases, and it is easy to generate cracks on the two phases, and there will also be component segregation, voids, and non-dense structures. The defects on the surface affect the application of this material, and it can only be used as guide rollers and small roller rings in the metallurgical industry and small wear-resistant parts in other industries.
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Embodiment 1
[0018] Example 1: A high-strength wear-resistant alloy steel, composed of the following raw materials in weight percentages, iron: 68%, carbon: 3.2%, sulfur: 3%, copper: 0.8%, tungsten: 12%, nickel: 2% , Chromium: 2.6%, Manganese: 1.1%, Silicon: 1.3%, Phosphorus: 3%, Aluminum: 2.1%, VanadiumOxide: 0.9%.
[0019] A method for preparing high-strength wear-resistant alloy steel, comprising the following steps:
[0020] 1) Add 52% iron into a high-temperature furnace with a temperature of 1400-1600°C for melting:
[0021] 2), adding tungsten to the melted iron in step 1), and keeping the temperature of the molten iron at 1200-1600°C to melt the tungsten;
[0022] 3), after the tungsten in step 2) is completely melted, add chromium, nickel and remaining iron;
[0024] 5) After the substances added in step 4) are completely ...
Embodiment 2
[0025] Embodiment 2: A high-strength wear-resistant alloy steel, composed of the following raw materials in weight percentages, iron: 73%, carbon: 2.3%, sulfur: 3.1%, copper: 1%, tungsten: 8%, nickel: 2% , Chromium: 2.3%, Manganese: 1.2%, Silicon: 0.9%, Phosphorus: 3%, Aluminum: 2.3%, VanadiumOxide: 0.9%.
[0026] A method for preparing high-strength wear-resistant alloy steel, comprising the following steps:
[0027] 1) Add 48% iron into a high-temperature furnace with a temperature of 1400-1600°C for melting:
[0028] 2), adding tungsten to the melted iron in step 1), and keeping the temperature of the molten iron at 1200-1600°C to melt the tungsten;
[0029] 3), after the tungsten in step 2) is completely melted, add chromium, nickel and remaining iron;
[0030] 4), after the iron, chromium and nickel added in step 3) are completely melted, then add manganese, silicon, sulfur, phosphorus and vanadium oxide;
[0031] 5) After the substances added in step 4) are completel...
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Abstract
The invention belongs to an alloy technology, and particularly relates to high-strength wear-resisting alloy steel and a preparation method thereof. The high-strength wear-resisting alloy steel comprises raw materials in percentage by weight as follows: 68%-73% of iron, 2%-3.5% of carbon, 3%-3.2% of sulfur, 0.8%-1.2% of copper, 5%-12% of tungsten, 1.8%-2.3% of nickel, 1.8%-3% of chromium, 0.7%-1.5% of manganese, 0.7%-1.5% of silicon, 2.9%-3.4% of phosphorus, 1.7%-2.3% of aluminum and 0.9%-1.2% of vanadiumoxide. According to the weight ratio, the iron is removed and molten at the high temperature, tungsten is added to the high-temperature molten iron, after tungsten is molten, iron, chromium and nickel are added, then manganese, silicon, sulfur, phosphorus and vanadiumoxide are added, after all added substances are totally molten, the high-temperature molten metal is subjected to copper removal and deoxidation and is discharged out of a furnace, and the temperature is kept in a range from 1,500 DEG C to 1,700 DEG C. An electro-slag melting and casting steel-bonded carbide material has low cost and high finished product rate, and toughness and wear resistance are 1.5-2 times higher than those of a powdermetallurgy technical product.
Description
technical field [0001] The invention belongs to alloy technology, and in particular relates to a high-strength wear-resistant alloy steel and a preparation method thereof. Background technique [0002] The traditional manufacturing process of steel-bonded hard alloy is powdermetallurgysintering method, but due to the limitation of hand sintering equipment and manufacturing process, it is impossible to produce large-volume bows and arrows, and the sintering process is complex, long cycle, and high cost. If the volume is large and the center part cannot be burned through, defects such as pores and inclusions will increase significantly, resulting in a significant reduction in the strength of the alloy. The hard phase and binder phase in the steel-bonded cemented carbide sintered by powdermetallurgy method have weak bonding force between the two phases, and it is easy to generate cracks on the two phases, and there will also be component segregation, voids, and non-dense str...
Claims
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Application Information
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