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A kind of multi-principal alloy powder and method for preparing coating by laser cladding on die steel

A multi-principal alloy and laser cladding technology, which is applied in the field of material surface treatment and strengthening, can solve the problems of low manufacturing precision and standardization, poor quality reliability and stability, and low service life of molds, and achieve wear resistance and Improved corrosion resistance, reduced friction coefficient, and smooth wear profile

Inactive Publication Date: 2017-05-10
CHONGQING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The gap with the foreign advanced level is mainly manifested in: the service life of the mold is low, and the service life of the fine punching die is generally only about 1 / 3 of the foreign advanced level; the production cycle is long; the quality reliability and stability are poor; the manufacturing accuracy and standardization are low ,and many more

Method used

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  • A kind of multi-principal alloy powder and method for preparing coating by laser cladding on die steel
  • A kind of multi-principal alloy powder and method for preparing coating by laser cladding on die steel
  • A kind of multi-principal alloy powder and method for preparing coating by laser cladding on die steel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 1. A multi-principal alloy powder, in molar fractions, comprising the following components: 30 parts of Co, 30 parts of Cr, 30 parts of Al, 30 parts of Mn and 30 parts of Ni, and the particle size of the multi-principal alloy powder is 100 ~300 mesh; the purity of the Co, Cr, Al, Ni, Mn are all ≥99%.

[0024] Two, the above-mentioned multi-principal alloy powder is used for the method for preparing cladding layer on die steel, comprises the steps:

[0025] 1) Use electronic balance FA2004N to prepare multi-principal alloy powder according to the above formula, put the prepared multi-principal alloy powder into a ball mill and mix for 4 h;

[0026] 2) Grind off the oxide film on the surface of the 5CrNiMo mold steel with metallographic sandpaper, and clean the polished mold steel with absolute ethanol or acetone;

[0027] 3) Prepare a polyvinyl alcohol solution with a mass concentration of 0.3%, and heat it in a water bath to completely dissolve the polyvinyl alcohol; m...

Embodiment 2

[0031] 1. A multi-principal alloy powder, in molar fractions, comprising the following components: 20 parts of Co, 20 parts of Cr, 20 parts of Al, 20 parts of Mn, 20 parts of Ni and 10 parts of Fe; the multi-principal alloy The particle size of the powder is 100-300 mesh; the purity of the Co, Cr, Al, Ni, Mn and Fe are all ≥99%.

[0032] Two, the above-mentioned multi-principal alloy powder is used for the method for preparing cladding layer on die steel, comprises the steps:

[0033] 1) Use the electronic balance FA2004N to prepare multi-principal alloy powder according to the above formula, put the prepared multi-principal alloy powder into a ball mill and mix for 5 hours;

[0034] 2) Grind off the oxide film on the surface of the 5CrNiMo mold steel with metallographic sandpaper, and clean the polished mold steel with acetone;

[0035] 3) Prepare a polyvinyl alcohol solution with a mass concentration of 0.4%, and heat it in a water bath to completely dissolve the polyvinyl ...

Embodiment 3

[0039] 1. A multi-principal alloy powder, in molar fractions, comprising the following components: 10 parts of Fe, 10 parts of Co, 10 parts of Cr, 10 parts of Al, 10 parts of Mn and 10 parts of Ni; the multi-principal alloy The particle size of the powder is 100-300 mesh; the purity of the Co, Cr, Al, Ni, Mn and Fe are all ≥99%.

[0040] Two, the above-mentioned multi-principal alloy powder is used for the method for preparing cladding layer on die steel, comprises the steps:

[0041] 1) Use the electronic balance FA2004N to prepare multi-principal alloy powder according to the above formula, put the prepared multi-principal alloy powder into a ball mill and mix for 6 h;

[0042] 2) Grind off the oxide film on the surface of the 5CrNiMo mold steel with metallographic sandpaper, and clean the polished mold steel with acetone;

[0043] 3) Prepare a polyvinyl alcohol solution with a mass concentration of 0.5%, and heat it in a water bath to completely dissolve the polyvinyl alco...

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Abstract

The invention discloses multi-principal element alloy powder and a method for preparing a coating on die steel through laser cladding by applying the multi-principal element powder. The multi-principal element alloy powder comprises the following components according to molar ratios: Co, Cr, Al, Ni and Mn with equal molar ratios. The method for manufacturing the coating comprises the steps that firstly, an oxidation film on the surface of the die steel is polished off by using metallographic abrasive paper, and absolute ethyl alcohol or acetone is used for cleaning the polished die steel; then a polyvinyl alcohol solution is utilized for being mixed with the multi-principal element alloy powder to form a pasty mixture; the pasty mixture is pre-arranged on the surface of the polished and cleaned die steel to form a pre-arranged cladding layer; after 5-6 h of vacuuming drying at 80 DEG C, the pre-arranged cladding layer is subjected to irradiation treatment, so that a cladding layer is obtained. By utilizing the cooperative compatibility effect of a multi-principal element high-entropy alloy, the manufactured cladding layer has the excellent properties of high rigidity, high abrasion-resistance, high corrosion-resistance and the like.

Description

technical field [0001] The invention belongs to the technical field of material surface treatment and strengthening, and in particular relates to a multi-principal alloy powder and a method for preparing a coating by laser cladding on die steel. Background technique [0002] Mold is the main processing tool for manufacturing parts in industrial sectors such as machinery and electrical manufacturing. Die steel is used to make molds such as cold work molds and hot work molds steel type . Die steel can be divided into four categories according to service conditions: cold work die steel, hot work die steel, plastic mold steel, and plastic mold steel. Among them, hot work dies need to work at higher temperatures, so they are required to have good properties such as good strength and hardness, good thermal conductivity, high hardenability, good oxidation resistance and wear resistance. The quality of the mold directly affects the quality, precision, output and production cost o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C30/00C23C24/10
CPCC22C30/00C23C24/106
Inventor 叶宏刘承鑫闫忠琳
Owner CHONGQING UNIV OF TECH
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