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Method for preparing honeycomb ceramic coating on surface of steel plate

A technology of honeycomb ceramics and steel plates, applied in coatings, metal material coating processes, etc., can solve problems such as low anti-stripping strength, easy cracks in coatings, and affecting the service life of coated parts, and achieve high anti-stripping strength, Energy saving, less cracking effect

Inactive Publication Date: 2013-04-03
江阴东大新材料研究院
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AI Technical Summary

Problems solved by technology

[0002] The ceramic coating prepared on the surface of the steel plate by the existing surface engineering technology is usually a whole. Due to the difference in thermal expansion coefficient between the coating and the steel substrate, the coating is prone to defects such as cracks and low peel strength, which affects the quality of the coated parts. service life

Method used

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Embodiment Construction

[0007] best practice

[0008] A honeycomb steel plate with a hole diameter of 8 mm, a hole depth of 2 mm, and a wall thickness of 0.5 mm is used as the die of the extrusion die. Prepare C powder and Ti powder with a particle size of 200 mesh at an atomic ratio of 1:1, then add Fe powder with a total amount of 10-20%wt of C powder and Ti powder, mix well to make a mixture, and use it to match the die The mold steel punch presses the mixture into the honeycomb holes of the honeycomb steel plate to form a prefabricated block. Ignite the prefabricated block in the honeycomb hole with a laser beam to cause a self-propagating reaction, and after the gas is removed for about 5 seconds after the reaction, the punch is immediately pressed to form a cermet honeycomb panel. Put the steel plate at the bottom of the closed mold, preheat the steel plate at 200°C, pour the molten iron generated by the aluminothermic reaction on the surface of the steel plate, put the cermet honeycomb plate ...

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Abstract

The invention relates to a method for preparing a honeycomb ceramic coating on the surface of a steel plate, which comprises the following steps of: taking a honeycomb steel plate as the concave mould of an extrusion die; preparing C powder and Ti powder according to chemical measurement, adding Fe powder which is 10-20wt% of the total amount of the C powder and the Ti powder, and uniformly mixing to obtain a mixing material; pressing the mixing material into honeycomb holes of the honeycomb steel plate by a convex mould which is matched with the concave mould to prepare a prefabricated block; burning the prefabricated block in the honeycomb holes by a high-energy flame to promote a self-propagating reaction; immediately pressing the prefabricated block by the convex mould after discharging the gas to obtain a metal ceramic honeycomb plate; putting the steel plate on the bottom of a closed die; after pre-heating the steel plate at 190-210 DEG C, pouring molten iron generated by a thermit reaction on the surface of the steel plate; placing the metal ceramic honeycomb plate in the molten iron on the surface of the steel plate; and pressurizing and solidifying to obtain a honeycomb ceramic coating on the surface of the steel plate. The honeycomb steel plate in the coating disclosed by the invention has functions of preventing the crack propagation and enhancing the toughness.

Description

technical field [0001] The invention provides a method for preparing a honeycomb ceramic coating on the surface of a steel plate. It belongs to the technical field of surface engineering. Background technique [0002] The ceramic coating prepared on the surface of the steel plate by the existing surface engineering technology is usually a whole. Due to the difference in thermal expansion coefficient between the coating and the steel substrate, the coating is prone to defects such as cracks and low peel strength, which affects the quality of the coated parts. service life. Contents of the invention [0003] The purpose of the present invention is to overcome the above-mentioned shortcomings, and provide a method for preparing a honeycomb ceramic coating on the surface of a steel plate, which is less prone to cracks and has high anti-stripping strength. [0004] The object of the present invention is achieved in that a method for preparing a honeycomb ceramic coating on th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C26/00
Inventor 陈威陈大智谭佃龙高一翔朱丹何亦栋高柏清刘阳
Owner 江阴东大新材料研究院
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