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High-performance alloy steel and manufacturing method thereof

A high-performance technology for alloy steel, applied in the field of high-performance alloy steel and its manufacturing, can solve the problems of complex production process and conditions, high production cost, high production equipment requirements, etc., achieve low notch sensitivity, good welding performance, low Effects of Low Temperature Brittle Fracture and Delayed Fracture Properties

Active Publication Date: 2014-10-29
SICHUAN YIHENG MACHINERY MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, although there are many types of alloy steel, there are few alloy steel materials with high strength, high toughness and high hardness, and the requirements for production equipment are high, the production process and conditions are complicated, and the production cost is high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Embodiment 1: A high-performance alloy steel formulated from the following components and weight ratios; iron: carbon: manganese: molybdenum: silicon: titanium: nickel: phosphorus: sulfur: copper=93.12: 0.20:2.3: 0.20: 1.80: 0.03: 0.05: 0.03: 0.01: 0.02.

[0013] The production method of high-performance alloy steel is carried out according to the following steps:

[0014] 1. Add high-quality scrap steel into the ladle refining furnace, heat and melt, and control the temperature of molten steel at 1650-1670 °C;

[0015] 2. Use a spectrum analyzer to detect the molten steel composition, adjust the alloy composition in the molten steel, and control the alloy components to be iron: carbon: manganese: molybdenum: silicon: titanium: nickel: phosphorus: sulfur: copper=93.12: 0.20:2.3: 0.20:1.80: 0.03: 0.05: 0.03: 0.01: 0.02;

[0016] 3. Vacuum degassing. After 15-17 minutes of vacuum degassing in a vacuum furnace, test the molten steel, supplement relevant alloy components...

Embodiment 2

[0020] Embodiment 2: A high-performance alloy steel formulated from the following components and weight ratios; iron: carbon: manganese: molybdenum: silicon: titanium: nickel: phosphorus: sulfur: copper=95.10: 0.30: 3.20: 0.45: 0.90: 0.21: 0.25: 0: 0.03: 0.015.

[0021] The production method of high-performance alloy steel is carried out according to the following steps:

[0022] 1. Add high-quality scrap steel into the ladle refining furnace, heat and melt, and control the temperature of molten steel at 1650-1670 °C;

[0023] 2. Use a spectrum analyzer to detect the molten steel composition, adjust the alloy composition in the molten steel, and control the composition range of each alloy to iron: carbon: manganese: molybdenum: silicon: titanium: nickel: phosphorus: sulfur: copper = 95.10: 0.30: 3.20 : 0.45: 0.90: 0.21: 0.25: 0: 0.03:0.015;

[0024] 3. Vacuum degassing. After vacuum degassing in a vacuum furnace for 15-17 minutes, test the molten steel, supplement relevant a...

Embodiment 3

[0028] Embodiment 3: A high-performance alloy steel formulated by the following components and weight ratios; iron: carbon: manganese: molybdenum: silicon: titanium: nickel: phosphorus: sulfur: copper=96.92: 0.10: 1.8: 0.30: 2.30: 0.30: 0.20: 0.03: 0.01: 0.01.

[0029] The production method of high-performance alloy steel is carried out according to the following steps:

[0030] 1. Add high-quality scrap steel into the ladle refining furnace, heat and melt, and control the temperature of molten steel at 1650-1670 °C;

[0031] 2. Use a spectrum analyzer to detect the molten steel composition, adjust the alloy composition in the molten steel, and control each alloy composition as iron: carbon: manganese: molybdenum: silicon: titanium: nickel: phosphorus: sulfur: copper = 96.92: 0.10: 1.8: 0.30:2.30: 0.30: 0.20: 0.03: 0.01: 0.01;

[0032] 3. Vacuum degassing. After vacuum degassing in a vacuum furnace for 15-17 minutes, test the molten steel, supplement relevant alloy component...

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Abstract

The invention discloses high-performance alloy steel which is characterized by being prepared from the following components and the weight ratio: iron:carbon:manganese:molybdenum:silicon:titanium:nickel:phosphorus:sulfur:copper=93.12-96.92:0.10-0.30:1.80-3.20:0.20-0.45:0.90-2.30:0.03-0.30:0.05-0.25:0-0.03:0-0.03:0.01-0.02. The high-performance alloy steel has the product properties: the tensile strength Rm is greater than or equal to 1350 MPa, the yield strength Rel is greater than or equal to 1050 MPa, the elongation rate A (%) is greater than or equal to 10, the cross section shrinking percentage Z (%) is greater than or equal to 50, the room temperature (42 DEG C) impact toughness aku is greater than or equal to 100 J / cm<2>, the low temperature (-40 DEG C) impact toughness aku is greater than or equal to 50 J / cm<2>, and the hardness HRC is 40-50; the product is detected by the national analysis center for iron and steel, and indicators such as non-metallic inclusions and the grain size all accord with national standard high-level requirements.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a high-performance alloy steel and a manufacturing method thereof. Background technique [0002] Metal material is the basic material of modern machinery manufacturing industry. Due to its good performance and process performance, it is widely used in the manufacture of various production equipment, tools, weapons and daily utensils. Alloy steel is much higher in strength and toughness than ordinary metals, and is often used to manufacture parts under heavy load and impact conditions. Although there are many types of alloy steel at present, there are few alloy steel materials with high strength, high toughness and high hardness at the same time, and the requirements for production equipment are high, the production process and conditions are complicated, and the production cost is high. Contents of the invention [0003] The purpose of the present invention is to overcome t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/16C22C33/04C21D8/00
CPCY02P10/20
Inventor 李银芳郑玉兴
Owner SICHUAN YIHENG MACHINERY MFG CO LTD
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