Alloy atom multiple permeability coating surface treatment method of iron-based fastener

Abstract

The invention provides an alloy atom multiple permeability coating surface treatment method of an iron-based fastener. The method includes the following steps that mechanical shot blasting method is used for removing rust and grinding on the surface of the iron-based fastener, the processed iron-based fastener a zinc saturated compound are put into a heat-treatment furnace, heat treatment temperature is controlled so that the surface of the iron-based fastener forms a zinc-iron alloy atomic permeability coating, the formed zinc-iron alloy atomic permeability coating is subjected to polished byalumina ceramic particles, and the first two steps are repeated for a predetermined number of times. The multiple layers of zinc-iron alloy atomic permeability coating with predetermined thickness isformed on the surface of the iron-based fastener, the finally obtained multiple layers of zinc-iron alloy atomic permeability coating on the surface of the iron-based fastener is polished, and the surface of the polished multiple layers of zinc-iron alloy atomic permeability coating is subjected to surface passivation, cleaning and drying treatment. According to the alloy atom multiple permeability coating surface treatment method, an alloy atom multiple permeability technology is introduced, the treated iron-based fastener has good corrosion resistant and scratch resistant performance.

Description

technical field [0001] The invention belongs to the technical field of surface anticorrosion of high-strength fasteners, and in particular relates to a method for treating the surface of an alloy atom multi-permeable coating of an iron-based fastener. Background technique [0002] Iron-based fasteners refer to metal connecting fasteners with iron as the main base material, including iron-based alloy parts, which are the most commonly used high-strength connecting parts. The usual working conditions are complex and harsh, such as industrial atmospheric acid rain environment , coastal humid environment, northwest wind and sand erosion, etc., are often accompanied by long-term mechanical vibration, wear, and stress impact, which often cause corrosion and damage to iron-based fasteners, seriously shortening the service life of iron-based fasteners. This requires anti-corrosion treatment on the surface of iron-based fasteners. Although the existing coating anti-corrosion technolo...

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Problems solved by technology

[0002] Iron-based fasteners refer to metal connecting fasteners with iron as the main base material, including iron-based alloy parts, which are the most commonly used high-strength connecting parts. The usual working conditions are complex and harsh, such as industrial atmospheric acid rain environment , coastal humid environment, northwest wind and sand erosion, etc., often accompanied by long-term mechanical vibration, wear, and stress impact, often cause corrosion and damage to iron-based fasteners, seriously shortening the service life of iron-based fasteners

This requires anti-corrosion treatment on the surface of iron-based fasteners. Although the existing coating anti-corrosion technology has high surface hardness and scratch resistance, it still cannot meet the requirements of iron-based fasteners in harsh working conditions. Requirements

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