Steam action-based metal material surface modification method and device therefor

Abstract

The invention relates to a steam action-based metal material surface modification method and a device therefor. The steam action-based metal material surface modification method is characterized in that according to chemical characteristics of reactions between H2O and a metal material such as Al, Mg and Ti, in the presence of saturated steam or superheated steam as an interaction medium, a functional film is in-situ synthesized on the surface of a base. The steam action-based metal material surface modification method has the obvious effects of water saving, emission reduction, environmental protection and high efficiency, utilizes water as main even only raw material, and has the advantages of zero involvement and zero discharge. The device comprises a steam generator, a steam distributor, a reaction tank, a liquid storage tank, a workpiece table and a driving motor and has the advantages of safety, reliability, simple structure, and use convenience. Through the steam action-based metal material surface modification method and the device therefor, in metal material surface modification, high-level treatment effects are obtained and potential damage produced by the prior art on the ecological environment and human health is eliminated thoroughly and cleaner production is realized really.

Description

technical field [0001] The invention belongs to the technical field of material processing engineering, and in particular relates to a method and equipment for modifying the surface of metal materials based on steam action. Background technique [0002] Surface modification is one of the important application technologies of materials, which plays a huge role in saving the cost of material manufacturing, improving the service performance of materials, and expanding the application fields of materials. Taking metal materials as an example, from traditional carbon steel to modern new materials represented by magnesium, aluminum, titanium, etc., their applications are all closely related to the development of surface modification technology. [0003] However, the existing surface modification technology of metal materials, especially the surface modification technology based on the chemical and electrochemical reactions between materials / electrolyte, has two major shortcomings:...

AI Technical Summary

Problems solved by technology

[0003] However, the existing surface modification technology of metal materials, especially the surface modification technology based on the chemical and electrochemical reactions between materials / electrolyte, has two major shortcomings: First, the traditional "immersion" mode is the main method, that is, The surface of the workpiece to be treated needs to be completely submerged in the solution to complete the reaction process; second, excessive reliance on the use of various chemicals

The biggest drawback of the traditional "immersion" model is the massive consumption of resources, especially water resources, and the subsequent surge in sewage treatment / discharge

As the volume or surface area of ​​a single workpiece increases, especially for large-volume and large-area workpieces, the above defects are more prominent

In addition, due to the influence of the solution temperature, the temperature window of the "immersion" mode is narrow (generally not higher than 100°C under normal pressure)

The main problems brought about by the addition of a large number of chemicals include: 1) The cost of raw materials increases; 2) The process, especially the optimization of the formula, is more difficult; 3) The process window is narrowed, and the requirements for the comprehensive quality of operators are increased; 4) Electrolyte 5) The composition and structure of the modified layer are complicated; 6) The stability of product quality is seriously affected; 7) The hidden dangers of health and environmental safety and their secondary hazards are significantly increased. Large; 8) Waste liquid treatment is complicated, etc.

The above problems eventually lead to a significant increase in production costs, especially social costs

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