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Low-carbon low-boron medium-chromium alloy steel, and preparation method thereof

A carbon-low-boron, alloy steel technology, applied in the field of low-carbon, low-boron, medium-chromium alloy steel and its preparation, can solve the problems of difficult popularization for civil use, high process requirements, high smelting costs, etc., achieve good uniformity and ensure wear resistance The effect of improving the toughness and hardenability

Inactive Publication Date: 2018-12-07
LESHAN TAIGANG SUNKOS MACHINERY MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The high-strength and high-toughness alloy steel disclosed in this patent document adopts a low-carbon multi-alloy ratio, which has high smelting costs, high difficulty in control, high process requirements, and high cost.

Method used

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  • Low-carbon low-boron medium-chromium alloy steel, and preparation method thereof
  • Low-carbon low-boron medium-chromium alloy steel, and preparation method thereof
  • Low-carbon low-boron medium-chromium alloy steel, and preparation method thereof

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Embodiment 1

[0064] As a preferred embodiment of the present invention, with reference to the accompanying drawings, this embodiment discloses:

[0065] Low-carbon, low-boron, medium-chromium alloy steel, consisting of the following raw materials by weight percentage:

[0066] Carbon 0.05%;

[0067] Silicon 1%;

[0068] Manganese 0.8%;

[0069] Phosphorus 0.01%

[0070] Sulfur 0.03%;

[0071] Chromium 3.5%,

[0072] Nickel 0.3%;

[0073] Molybdenum 0.1%;

[0074] Boron 0.03%;

[0075] Aluminum 0.1%;

[0076] Cerium 0.5%

[0077] Tin 0.02%;

[0078] Vanadium 0.3%;

[0079] Tungsten 0.1%;

[0080] Copper 0.05%;

[0081] Tantalum 0.005%;

[0082] Cobalt 0.05%;

[0083] Niobium 0.05%;

[0084] The rest is iron and unavoidable impurities.

Embodiment 2

[0086] As another preferred embodiment of the present invention, this embodiment discloses:

[0087] Low-carbon, low-boron, medium-chromium alloy steel, consisting of the following raw materials by weight percentage:

[0088] Carbon 0.2%;

[0089] Silicon 1.5%;

[0090] Manganese 1.12%;

[0091] Phosphorus 0.03%

[0092] Sulfur 0.01%;

[0093] Chromium 4%;

[0094] Nickel 0.8%;

[0095] Molybdenum 0.23%;

[0096] Boron 0.11%;

[0097] Aluminum 0.16%;

[0098] Cerium 0.7%

[0099] Tin 0.06%;

[0100] Vanadium 0.5%;

[0101] Tungsten 0.7%;

[0102] Copper 0.13%;

[0103] Tantalum 0.008%;

[0104] Cobalt 0.062%;

[0105] Titanium 0.04%

[0106] Niobium 0.12%;

[0107] The rest is iron and unavoidable impurities.

Embodiment 3

[0109] As another preferred embodiment of the present invention, this embodiment discloses:

[0110] Low-carbon, low-boron, medium-chromium alloy steel, consisting of the following raw materials by weight percentage:

[0111] Carbon 0.30%;

[0112] Silicon 1.8%;

[0113] Manganese 1.3%;

[0114] Phosphorus 0.035%

[0115] Sulfur 0.029%;

[0116] Chromium 7.9%;

[0117] Nickel 2%;

[0118] Molybdenum 0.5%;

[0119] Boron 0.25%;

[0120] Aluminum 0.3%;

[0121] Cerium 1.5%

[0122] Tin 0.1%;

[0123] Vanadium 1.0%;

[0124] Tungsten 1%;

[0125] Copper 0.3%;

[0126] Tantalum 0.015%;

[0127] Cobalt 0.15%;

[0128] Titanium 0.08%

[0129] Niobium 0.25%;

[0130] The rest is iron and unavoidable impurities.

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Abstract

The invention discloses a low-carbon low-boron medium-chromium alloy steel, and a preparation method thereof, and belongs to the technical field of alloy steel manufacturing. The low-carbon low-boronmedium-chromium alloy steel comprises 0.05 to 0.30% of carbon, 1.0 to 3.0% of silicon, 0.8 to 1.3% of manganese, phosphor of 0.04% or lower, sulfur of 0.04% or lower, 3.5 to 7.9% of chromium, 0 to 0.08% of titanium, 0.3 to 2.0% of nickel, 0.1 to 0.5% of molybdenum, 0.03 to 0.25% of boron, 0.1 to 0.3% of aluminium, 0.5 to 1.5% of cerium, 0.02 to 0.1% of tin, 0.3 to 1.0% of vanadium, 0.1 to 1% of tungsten, 0.05 to 0.3% of copper, 0.005 to 0.015% of tantalum, 0.05 to 0.15% of cobalt, 0.05 to 0.25% of niobium, and the balance iron and unavoidable impurities. The hardness of the low-carbon low-boron medium-chromium alloy steel is HRC45-55, the impact energy is 8 to 15J / mm<2>. The preparation method is capable of guaranteeing the high toughness and impact resistance, and improving the wear resistance and hardness, is convenient to control, and is suitable for civil applications and popularization.

Description

technical field [0001] The invention relates to the technical field of alloy steel, and more specifically relates to a low-carbon, low-boron, medium-chromium alloy steel suitable for civil use and popularization and a preparation method thereof. Background technique [0002] Alloy steel is an iron-carbon alloy formed by adding an appropriate amount of one or more alloying elements to ordinary carbon steel. [0003] According to the different elements added and appropriate processing technology, special properties such as high strength, high toughness, wear resistance, corrosion resistance, low temperature resistance, high temperature resistance, and non-magnetic properties can be obtained. According to the content of alloy elements in steel, it can be divided into low alloy steel, medium alloy steel and high alloy steel. The main alloying elements of alloy steel are silicon, manganese, chromium, nickel, molybdenum, tungsten, vanadium, titanium, niobium, zirconium, cobalt, a...

Claims

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Application Information

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IPC IPC(8): C22C38/44C22C38/46C22C38/42C22C38/48C22C38/50C22C38/52C22C38/54C22C38/02C22C38/04C22C38/06C22C33/04C21D6/00
CPCC22C38/44C21D6/004C21D6/005C21D6/007C21D6/008C22C33/04C22C38/005C22C38/008C22C38/02C22C38/04C22C38/06C22C38/42C22C38/46C22C38/48C22C38/50C22C38/52C22C38/54
Inventor 陈章华张昌华杨敏惠李翼莲习红梅
Owner LESHAN TAIGANG SUNKOS MACHINERY MFG
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