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A method for preparing a rolling guide wheel for a high-precision guide assembly

A high-precision, guide wheel technology, applied in the field of guide and guide wheels, can solve the problems of wear resistance of process parts, poor thermal fatigue performance, affecting the service life of rolling stock quality, and insufficient heat resistance of guide parts, etc. The effect of high hardness, long service life and high precision

Active Publication Date: 2018-10-02
HEFEI ORIENT METALLURGICAL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many guide parts used have insufficient heat resistance, such as steel sticking, and some process parts have poor wear resistance and thermal fatigue performance, which affects the service life and quality of rolled products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A method for preparing a rolling guide wheel of a high-precision guide assembly, comprising the following steps:

[0028] Step 1, raw material configuration: the rolling guide wheel is made of 40% Cr12MoV cold work die steel scrap, 10% 1Cr18Ni9Ti, 2% WC powder, 1% ceramic powder, 10% 1Cr18Mn8Ni5N, 1.0% metal Aluminum, 0.5% RE, 1.0% ferroboron, 1.8% ferrochromium nitride, 1.6% silicon calcium barium alloy, 0.6% rare earth magnesium ferrosilicon alloy and 0.3% titanium ferroalloy, and the balance is Q235 steel scrap.

[0029] Among them, the chemical composition mass fraction of ferrochromium nitride is: Cr: 50-53%, N: 2.0-2.5%, C: ≤0.1%, Si: ≤2.5%, P: ≤0.03%, S: ≤0.04% , the balance being Fe.

[0030] Among them, the chemical composition mass fraction of silicon-calcium-barium alloy is: Si: 30-35%, Ca: 15-19%, Ba: 13-18%, C: ≤0.8%, P: ≤0.04%, S: ≤0.06 %, the balance is Fe.

[0031] Among them, the chemical composition mass fraction of rare earth magnesium ferrosilicon...

Embodiment 2

[0042] A method for preparing a rolling guide wheel of a high-precision guide assembly, comprising the following steps:

[0043] Step 1, raw material configuration: the rolling guide wheel is made of 42% Cr12MoV cold work die steel scrap, 12% 1Cr18Ni9Ti, 2.5% WC powder, 1.2% ceramic powder, 12% 1Cr18Mn8Ni5N, 1.25% metal Aluminum, 0.7% RE, 1.1% ferroboron, 1.9% ferrochromium nitride, 1.7% silicon calcium barium alloy, 0.7% rare earth magnesium ferrosilicon alloy and 0.4% titanium ferroalloy, the balance is Q235 steel scrap.

[0044] Among them, the chemical composition mass fraction of ferrochromium nitride is: Cr: 50-53%, N: 2.0-2.5%, C: ≤0.1%, Si: ≤2.5%, P: ≤0.03%, S: ≤0.04% , the balance being Fe.

[0045] Among them, the chemical composition mass fraction of silicon-calcium-barium alloy is: Si: 30-35%, Ca: 15-19%, Ba: 13-18%, C: ≤0.8%, P: ≤0.04%, S: ≤0.06 %, the balance is Fe.

[0046] Among them, the chemical composition mass fraction of rare earth magnesium ferrosilico...

Embodiment 3

[0057] A method for preparing a rolling guide wheel of a high-precision guide assembly, comprising the following steps:

[0058] Step 1, raw material configuration: the rolling guide wheel is made of 45% Cr12MoV cold work die steel scrap, 15% 1Cr18Ni9Ti, 5% WC powder, 2% ceramic powder, 15% 1Cr18Mn8Ni5N, 1.5% metal Aluminum, 0.82% RE, 1.2% ferroboron, 2.0% ferrochromium nitride, 1.8% silicon calcium barium alloy, 0.8% rare earth magnesium ferrosilicon alloy and 0.5% titanium ferroalloy, and the balance is Q235 steel scrap.

[0059] Among them, the chemical composition mass fraction of ferrochromium nitride is: Cr: 50-53%, N: 2.0-2.5%, C: ≤0.1%, Si: ≤2.5%, P: ≤0.03%, S: ≤0.04% , the balance being Fe.

[0060] Among them, the chemical composition mass fraction of silicon-calcium-barium alloy is: Si: 30-35%, Ca: 15-19%, Ba: 13-18%, C: ≤0.8%, P: ≤0.04%, S: ≤0.06 %, the balance is Fe.

[0061] Among them, the chemical composition mass fraction of rare earth magnesium ferrosilico...

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PUM

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Abstract

The invention discloses a method for preparing a rolling guide wheel of a high-precision guide assembly. Including raw material configuration, smelting, casting and rough machining, heat treatment and nitriding treatment and other processes. The present invention uses Cr12MoV, 1Cr18Ni9Ti, WC powder, ceramic powder and 1Cr18Mn8Ni5N as the main material, and adds metal aluminum, RE, ferroboron, ferrochromium nitride, calcium calcium barium alloy, rare earth magnesium ferrosilicon alloy and ferrotitanium at high temperature. The guide wheel with high hardness and high toughness is obtained by overall melting, and then after nitriding treatment, the friction resistance of the surface is improved, thereby increasing the service life of the guide wheel. Moreover, the high hardness and high toughness properties improve the precision when processing steel .

Description

technical field [0001] The invention belongs to the technical field of guide and guard wheels, in particular to a method for preparing a rolling guide wheel of a high-precision guide and guard assembly. Background technique [0002] As the rolling speed increases, the sliding guide device is gradually replaced by the guide wheel. Due to the harsh working conditions of the guide wheel, it is required that the guide wheel not only has high toughness, thermal fatigue resistance, corrosion resistance and oxidation resistance, but also has high hardness and corrosion resistance. [0003] The guide wheel is an important spare part that consumes a lot in the hot-rolled bar production line, and is a key component in the rolling guide assembly, which affects the technical and economic indicators such as the operating rate of the rolling mill. Many guide parts used have insufficient heat resistance, such as steel sticking, and some process parts have poor wear resistance and thermal ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C33/06C22C38/02C22C38/04C22C38/06C22C38/08C22C38/12C22C38/14C22C38/16C22C38/18C21D1/18C21D9/00C23C8/26
CPCC21D1/18C21D9/0068C21D2261/00C22C33/006C22C33/06C22C38/001C22C38/002C22C38/005C22C38/02C22C38/04C22C38/06C22C38/08C22C38/12C22C38/14C22C38/16C22C38/18C23C8/26Y02P10/20
Inventor 张有德赵仕章梁海峰史宣菊吴翠凤吴涛
Owner HEFEI ORIENT METALLURGICAL EQUIP