阅读说明：本技术 一种铝镁合金表面增强层的制备方法 (Preparation method of aluminum-magnesium alloy surface enhancement layer ) 是由 邓爽 于 2021-07-28 设计创作，主要内容包括：本申请公开了一种铝镁合金表面增强层的制备方法包括以下步骤：在铝镁合金的表面敷设一层纯钛粉,得到纯钛粉层。将氮电弧作用在纯钛粉层处,并使得电离的氮气与熔化的铝反应生成氮化铝,冷却后得到铝镁合金表面增强层。本申请得到的铝镁合金表面增强层具有高硬度、高耐磨性、高耐腐蚀性,能显著提高铝镁合金的表面性能,且加工设备简单,操作便捷,成本较低。相比现有技术的渗氮处理技术,本申请的制备方法性能更佳,成本更低,实现了性能与成本的兼顾,应用市场更大,开发潜力更大。(The application discloses a preparation method of an aluminum magnesium alloy surface enhancement layer, which comprises the following steps: and laying a layer of pure titanium powder on the surface of the aluminum-magnesium alloy to obtain a pure titanium powder layer. And (3) enabling nitrogen electric arc to act on the pure titanium powder layer, enabling ionized nitrogen to react with molten aluminum to generate aluminum nitride, and cooling to obtain the aluminum-magnesium alloy surface enhancement layer. The aluminum-magnesium alloy surface enhancement layer obtained by the application has high hardness, high wear resistance and high corrosion resistance, can obviously improve the surface performance of the aluminum-magnesium alloy, and has the advantages of simple processing equipment, convenience in operation and lower cost. Compared with the nitriding treatment technology in the prior art, the preparation method is better in performance, lower in cost, capable of achieving both performance and cost, larger in application market and larger in development potential.)

1. The preparation method of the aluminum-magnesium alloy surface enhancement layer is characterized by comprising the following steps of:

laying a layer of pure titanium powder on the surface of the aluminum-magnesium alloy to obtain a pure titanium powder layer;

and (3) enabling nitrogen electric arc to act on the pure titanium powder layer, enabling ionized nitrogen to react with molten aluminum to generate aluminum nitride, and cooling to obtain the aluminum-magnesium alloy surface enhancement layer.

2. The method according to claim 1, wherein the reaction mixture,

before a layer of pure titanium powder is laid on the surface of the aluminum-magnesium alloy, the aluminum-magnesium alloy is polished, cleaned and dried.

3. The method according to claim 2,

the cleaning solution comprises an acetone solution.

4. The method according to claim 1, wherein the reaction mixture,

laying a layer of pure titanium powder on the surface of the aluminum-magnesium alloy, comprising the following steps:

and mixing the pure titanium powder with an adhesive, coating the mixture on the surface of the aluminum magnesium alloy, and drying to realize the laying of a layer of pure titanium powder on the surface of the aluminum magnesium alloy.

5. The method according to claim 4,

the adhesive comprises water glass.

6. The method according to claim 4,

the aluminum magnesium alloy is in a strip-shaped block shape;

the pure titanium powder layer is a strip which is located in the middle of the aluminum magnesium alloy and extends along the length direction of the aluminum magnesium alloy.

7. The method according to claim 1, wherein the reaction mixture,

the nitrogen arc is generated by a tungsten inert gas welder.

8. The method according to claim 7,

the protective gas of the tungsten inert gas shielded welding machine comprises a mixed gas of nitrogen and argon.

9. The method according to claim 7,

arc-applying nitrogen at the layer of pure titanium powder, comprising:

aligning a tungsten electrode of the working tungsten electrode inert gas welding machine to one end of the pure titanium powder layer, and moving along the length direction of the pure titanium powder layer to realize that a nitrogen arc acts on the pure titanium powder layer.

10. The method according to claim 9,

aligning a tungsten electrode of the working tungsten electrode inert gas welding machine to one end of the pure titanium powder layer, fixing the aluminum-magnesium alloy on a platform before moving along the length direction of the pure titanium powder layer, and installing the tungsten electrode inert gas welding machine on a trolley.

Technical Field

The application relates to the technical field of nitriding treatment, in particular to a preparation method of an aluminum-magnesium alloy surface enhancement layer.

Background

Nitriding treatment refers to a treatment method of converting nitrogen into active nitrogen atoms or nitrogen ions by a proper process, permeating the active nitrogen atoms or nitrogen ions into the surface of a material, and reacting with the material to generate a series of nitrides. However, the existing nitriding processes have certain limitations, and have the defects of complex process and equipment and high cost.

Content of application

The application provides a preparation method of an aluminum magnesium alloy surface enhancement layer, which can obviously improve the surface strength and the wear resistance of the aluminum magnesium alloy.

In a first aspect, an embodiment of the present application provides a method for preparing an aluminum magnesium alloy surface enhancement layer, including the following steps: and laying a layer of pure titanium powder on the surface of the aluminum-magnesium alloy to obtain a pure titanium powder layer. And (3) enabling nitrogen electric arc to act on the pure titanium powder layer, enabling ionized nitrogen to react with molten aluminum to generate aluminum nitride, and cooling to obtain the aluminum-magnesium alloy surface enhancement layer.

In some embodiments, before a layer of pure titanium powder is laid on the surface of the aluminum magnesium alloy, the aluminum magnesium alloy is ground, cleaned and dried.

In some of these embodiments, the cleaning solution comprises an acetone solution.

In some embodiments, a layer of pure titanium powder is laid on the surface of the aluminum magnesium alloy, and the pure titanium powder comprises: and mixing the pure titanium powder with the adhesive, coating the mixture on the surface of the aluminum magnesium alloy, and drying to realize the laying of a layer of pure titanium powder on the surface of the aluminum magnesium alloy.

In some of these embodiments, the adhesive comprises water glass.

In some of these embodiments, the aluminum magnesium alloy is in the form of a bar. The pure titanium powder layer is a strip which is positioned in the middle of the aluminum magnesium alloy and extends along the length direction of the aluminum magnesium alloy.

In some of these embodiments, the nitrogen arc is generated by a tungsten inert gas welder.

In some of these embodiments, the shielding gas of the tig welder includes a mixture of nitrogen and argon.

In some of these embodiments, the arc application of nitrogen at the layer of pure titanium powder comprises: and aligning the tungsten electrode of the working tungsten electrode inert gas welding machine to one end of the pure titanium powder layer, and moving along the length direction of the pure titanium powder layer to realize the action of the nitrogen arc on the pure titanium powder layer.

In some embodiments, the tungsten electrode of the working tungsten inert gas welding machine is aligned with one end of the pure titanium powder layer, before the tungsten electrode moves along the length direction of the pure titanium powder layer, the aluminum magnesium alloy is fixed on the platform, and the tungsten inert gas welding machine is installed on the trolley.

According to the embodiment of the application, the preparation method of the aluminum magnesium alloy surface enhancement layer comprises the following steps: and laying a layer of pure titanium powder on the surface of the aluminum-magnesium alloy to obtain a pure titanium powder layer. And (3) enabling nitrogen electric arc to act on the pure titanium powder layer, enabling ionized nitrogen to react with molten aluminum to generate aluminum nitride, and cooling to obtain the aluminum-magnesium alloy surface enhancement layer. The aluminum-magnesium alloy surface enhancement layer obtained by the application has high hardness, high wear resistance and high corrosion resistance, can obviously improve the surface performance of the aluminum-magnesium alloy, and has the advantages of simple processing equipment, convenience in operation and lower cost. Compared with the nitriding treatment technology in the prior art, the preparation method is better in performance, lower in cost, capable of achieving both performance and cost, larger in application market and larger in development potential.