Hot-spraying nano composite ceramic coating plastic mold and production method thereof

A nano-composite, plastic mold technology, applied in the direction of ceramic layered products, coatings, layered products, etc., can solve the problem of plastic products that cannot adapt to high cutting-edge high production efficiency, long service life, high quality injection molding products, and affect the mold life. Quality, reduce production efficiency and other issues, to achieve good market application prospects and commercial value, low production costs, easy to operate

Inactive Publication Date: 2008-08-27
WUHAN YOUKE SURFACE ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the hardness of the above-mentioned patented product is relatively low, up to 40HRC. After a certain period of use, the surface will be rusted and rough, resulting in poor mold release, which not only affects the life of the mold and the surface quality of the plastic product, but also reduces the pro

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Embodiment 1 DN80M thermal spraying nano-composite ceramic coating plastic mold and production method thereof

[0014] The steel matrix material used in the thermal spraying nanocomposite ceramic coating plastic mold is 45#, the bonding bottom layer is Ni / Al, the powder particle size is 45-90 microns, and the thermal spraying material used in the nanocomposite ceramic working layer is nano-scale three The large-particle spherical nano-composite thermal spraying powder composed of chromium oxide, titanium dioxide and silicon dioxide has a particle size distribution of 15-45 microns. Firstly, a thermal spray coating is prepared on the die steel workpiece to be treated according to the standardized and optimized thermal spraying process. Specific process: pretreatment of the surface of the workpiece by sandblasting activation → preheating of the workpiece to 150-200°C - → spraying the primer layer → spraying the nanocomposite ceramic working layer. The thermal spraying te...

Embodiment 2

[0018] Embodiment 2 DN200M thermal spraying nano-composite ceramic coating plastic mold and production method thereof

[0019] The mold steel matrix used is a mold that has failed to be repaired by the manufacturer. The material is P20 pre-hardened steel. The material used for the bonding bottom layer is Al / Ni powder with a particle size distribution of 45-90 microns. The thermal spraying material is a large-particle spherical nanocomposite thermal spraying powder composed of nano-scale chromium trioxide, titanium dioxide and silicon dioxide, and the particle size distribution is 15-45 microns. Firstly, a thermal spray coating is prepared on the die steel workpiece to be treated according to the standardized and optimized thermal spraying process. Specific process: pretreatment of the surface of the workpiece by sandblasting activation → preheating of the workpiece to 150-200°C → spraying the primer layer → spraying the nanocomposite ceramic working layer. The thermal spray t...

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PUM

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Abstract

A plastic mold for hot-spray nanometer composite ceramic coating and a production method thereof are provided. The plastic mold is composed of a plastic mold steel basal body, a bottom bonding layer and a nanometer composite ceramic working layer produced by hot-spray technology. The bottom bonding layer adopts any of the Ni/AI, AI/NI or NiCrAl materials. The nanometer composite ceramic working layer adopts the material of granular ball-shaped nanometer composite hot-spray coating powder which is a compound of chromium oxide chromium sesquioxide, titanium dioxide and silicon dioxide. The production method comprises the following steps: firstly, preparing hot-spray coating on mold steel workpieces to be processed according to standard and optimized hot-spray process; secondly, conducting surface grinding and polishing to meet the technical requirements for the size, precision, surface toughness, etc. of the plastic mold. The production method is simple, low in production cost and easy to industrialize, and realizes the high-quality characteristics of the plastic mold such as high rigidity, high wear resistance, high corrosion resistance, long service life, and easiness to de-mould, so that the method has good market application prospect and high commercial value.

Description

technical field [0001] The invention relates to a plastic mold and a production method thereof, in particular to a thermal spraying nano-composite ceramic coating plastic mold and a production method thereof, belonging to the field of mold surface modification. Background technique [0002] Mold manufacturing is the foundation of the manufacturing industry. In electronics, automobiles, motors, electrical appliances, instruments, meters, home appliances, and communication products, 60% to 80% of the parts are shaped by molds. As one of the mold industries, China's plastic mold industry is also developing rapidly. The proportion of plastic molds has reached 36% of the total molds in 2000, and it was close to 40% in 2002. The proportion in import and export is as high as 50% to 60%. With the rapid development of national economy pillar industries such as construction and building materials, this proportion will continue to increase. From the perspective of material type and p...

Claims

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Application Information

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IPC IPC(8): B29C33/38B32B33/00B32B15/04B32B18/00B23P15/24C23C4/04
Inventor 翟长生吴志文张国安
Owner WUHAN YOUKE SURFACE ENG
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