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Mold surface ultra-hardening treatment technology

A super-hardening treatment and process technology, applied in the direction of metal material coating process, melt spraying, coating, etc., can solve the problems of dependence on imports and high cost, and achieve good dispersion, uniform particle size and strong wear resistance. Effect

Inactive Publication Date: 2017-01-18
大连圣洁热处理科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the WC powder used in China depends on imports, and the cost is relatively high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A kind of mold surface superhardening treatment process, described process is the process that utilizes plasma spraying method to spray WC composite coating on iron-based alloy, and described method process step is as follows:

[0025] (1) Coating material preparation: WC powder, ZrO 2 Powder, Y 2 o 3 The powder and MgO powder are mixed according to the mass ratio of 1:0.25~0.5:0.005~0.5:0.05~1, and the mixed powder is placed in a ball mill, and ball milled at a speed of 300~360r / min for 2 hours. The medium is absolute ethanol; the ball-milled powder is placed in an induction plasma powder device for spheroidization treatment, and the specific conditions are: power 40kW, powder spraying rate 265g / min, carrier gas argon flow rate 55L / min , to obtain a spherical composite coating material, the spherical composite coating material is spherical particles with an average particle diameter of 35 to 60 microns; the WC powder, ZrO 2 Powder, Y 2 o 3 The ratio of the total w...

Embodiment 2

[0029] A kind of mold surface superhardening treatment process, described process is the process that utilizes plasma spraying method to spray WC composite coating on iron-based alloy, and described method process step is as follows:

[0030] (1) Coating material preparation: WC powder, ZrO 2 Powder, Y 2 o 3 The powder and MgO powder are mixed according to the mass ratio of 1:0.25~0.5:0.005~0.5:0.05~1, and the mixed powder is placed in a ball mill, and ball milled at a speed of 300~360r / min for 2 hours. The medium is absolute ethanol; the powder after ball milling is placed in an induction plasma powder device for spheroidization treatment, the specific conditions are: power 50kW, powder spraying rate 400g / min, carrier gas argon flow rate 75L / min , to obtain a spherical composite coating material; the resulting spherical composite coating material is spherical particles with an average particle diameter of 35 to 60 microns; the WC powder, ZrO 2 Powder, Y 2 o 3 The ratio o...

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Abstract

The invention relates to a mold surface ultra-hardening treatment technology, belongs to the field of metal material surface treatment, and provides a technology for spraying a WC composite coating on iron-based alloy through a plasma spraying method. The method comprises the steps that firstly, composite coating paint is prepared and then made to form a powder raw material which is good in dispersity, uniform in particle size and high in strength and wear resistance; secondly, the obtained spherical raw material is sprayed on the mold surface through the plasma spraying method, and a mold with the high surface hardness is obtained.

Description

technical field [0001] The invention relates to a mold surface superhardening treatment process, which belongs to the field of metal material surface treatment. Background technique [0002] The surface hardening method refers to the treatment of hardening the surface layer of the part through an appropriate method while the core of the part still has toughness. The commonly used surface hardening treatment methods mainly include carburizing, nitriding, hard anodizing, coating, surface quenching, metalizing, etc. [0003] The method of improving the surface hardness can be achieved by plating a layer of metal or inorganic substance with high hardness on the surface of the part, such as chrome plating. The chromium plating layer has a high hardness, and its hardness can vary within a wide range of 400-1200HV according to the composition of the plating solution and the process conditions. The chrome-plated layer has good heat resistance and good wear resistance. With the de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/134C23C4/06
CPCC23C4/06
Inventor 王伟刘淑杰王立伟田绍洁
Owner 大连圣洁热处理科技发展有限公司
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