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Ceramic composite coating for enhancing high-temperature-abrasion resistance of steel surface of hot work die and preparing method of ceramic composite coating

A composite technology of hot work die steel and ceramics, which is applied in the direction of coating, metal material coating process, fusion spraying, etc., can solve the problems of hot work die steel failure and other problems, achieve prolong service life, cheap raw materials, and facilitate industrial production Effect

Inactive Publication Date: 2016-06-29
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a ceramic composite coating and its preparation method. The ceramic composite material can enhance the high temperature wear resistance of the hot work die steel surface, and solve the failure problem of the hot work die steel in the working process

Method used

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  • Ceramic composite coating for enhancing high-temperature-abrasion resistance of steel surface of hot work die and preparing method of ceramic composite coating
  • Ceramic composite coating for enhancing high-temperature-abrasion resistance of steel surface of hot work die and preparing method of ceramic composite coating
  • Ceramic composite coating for enhancing high-temperature-abrasion resistance of steel surface of hot work die and preparing method of ceramic composite coating

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1, preparation and performance test of ceramic composite coating

[0031] First, select micron Cr 2 o 3 (particle size 40-45μm) and SiO 2 (particle size is 40 ~ 45μm) powder as raw material; secondly, according to the mass percentage: Cr 2 o 3 : 97% and SiO 2 : 3% ratio for mixing and batching, stand-by; finally, adopt plasma spraying process to prepare ceramic composite coating on the surface of H13 hot work die steel.

[0032] Before the plasma spraying step, the surface of the H13 hot work die steel is pretreated as follows: the surface of the H13 hot work die steel is cleaned with ethanol, and then the surface of the H13 hot work die steel is machined by grinding.

[0033] The plasma spraying process is as follows:

[0034] Cr on the surface of H13 hot work die steel 2 o 3 The preparation process of the ceramic composite coating was assisted by Beijing United Coating Company. The size of the sprayed sample is Ф50×8mm.

[0035] The process parame...

Embodiment 2

[0047] Embodiment 2, preparation and performance test of ceramic composite coating

[0048] First, select micron Cr 2 o 3 (particle size 40-45μm) and SiO 2 (particle size is 40 ~ 45μm) powder as raw material; secondly, according to the mass percentage: Cr 2 o 3 : 94% and SiO 2 : 6% ratio for mixing and batching, stand-by; finally, adopt plasma spraying process to prepare ceramic composite coating on the surface of H13 hot work die steel.

[0049] Before the plasma spraying step, the surface of the H13 hot work die steel is pretreated as follows: the surface of the H13 hot work die steel is cleaned with ethanol, and then the surface of the H13 hot work die steel is machined by grinding.

[0050] The plasma spraying process is as follows:

[0051] Cr on the surface of H13 hot work die steel 2 o 3 The preparation process of the ceramic composite coating was assisted by Beijing United Coating Company. The size of the sprayed sample is Ф50×8mm.

[0052] The process parame...

Embodiment 3

[0063] Embodiment 3, preparation and performance test of ceramic composite coating

[0064] First, select micron Cr 2 o 3 (particle size 40-45μm) and SiO 2 (particle size is 40 ~ 45μm) powder as raw material; secondly, according to the mass percentage: Cr 2 o 3 : 99% and SiO 2 : 1% ratio for mixing and batching, stand-by; finally, adopt plasma spraying process to prepare ceramic composite coating on the surface of H13 hot work die steel.

[0065] Before the plasma spraying step, the surface of the H13 hot work die steel is pretreated as follows: the surface of the H13 hot work die steel is cleaned with ethanol, and then the surface of the H13 hot work die steel is machined by grinding.

[0066] The plasma spraying process is as follows:

[0067] Cr on the surface of H13 hot work die steel 2 o 3 The preparation process of the ceramic composite coating was assisted by Beijing United Coating Company. The size of the sprayed sample is Ф50×8mm.

[0068] The process parame...

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Abstract

The invention discloses a ceramic composite coating for enhancing the high-temperature-abrasion resistance of a steel surface of a hot work die and a preparing method of the ceramic composite coating. The preparing method includes the following steps that a mixture of Cr2O3 and SiO2 is sprayed to the surface of a base body through plasma spraying, so that the ceramic composite coating is obtained, wherein the mixture comprises, by mass percentage, 94% to 100% of Cr2O3 and 6% to 0 of SiO2, however, the adding amount of Cr2O3 does not reach 100%, and the adding amount of SiO2 does not reach zero. The ceramic composite coating and the preparing method of the ceramic composite coating have the following beneficial effects that the ceramic composite coating is high in microhardness, low in high-temperature friction coefficient, good in high-temperature-abrasion resistant performance and resistant to oxidization; by the adoption of the preparing method of the ceramic composite coating, raw materials are cheap and common, the technology is simple, cost is low, and industrial production is facilitated. The ceramic composite coating can achieve the effect of enhancing the surface of the base body of the hot work die, so that the service life of the hot work die is prolonged.

Description

technical field [0001] The invention relates to a ceramic composite coating which enhances the high-temperature wear resistance of the surface of hot work die steel and a preparation method thereof. Background technique [0002] Mold is the basic process equipment for industrial production. In machinery, national defense, metallurgy, light work, electronics and other industrial sectors, a considerable part of the parts are formed by molds. In the manufacturing industry, molds ensure high-product, high-efficiency production and reduce production costs. The mold industry occupies an important position in the national economy. Mold technology has become an important symbol to measure a country's product manufacturing level, and the continuous expansion of mold application fields puts forward more and higher requirements for molds. Mold life is one of the important factors that directly affect processing efficiency, product quality and cost. Therefore, improving the service li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/11C23C4/134C23C4/02
CPCC23C4/02
Inventor 刘大猛庞华谢辰李进兴
Owner TSINGHUA UNIV
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