Preparation process of nano-alloy zinc impregnation

Abstract

The invention relates to the technical field of alloy zinc impregnation, in particular to a preparation process of nano-alloy zinc impregnation. The preparation method of the nano-alloy zinc impregnation comprises the following steps: taking a workpiece, removing oil and rust; carrying out ultrasonic nano-crystallization treatment; mixing zinc powder; performing charging, sealing, heating, permeating and curing; performing discharging from a furnace; performing washing at high pressure; performing anodic electrolytic polishing; performing passivating and sealing; and performing drying to obtain a finished product. The method has the advantages of few process procedures, simple and mature process, high production speed and greatly improved production efficiency.

Description

technical field [0001] The invention relates to the technical field of alloy galvanization, in particular to a preparation process of nano-alloy galvanization. Background technique [0002] The main body of nano-alloy galvanizing is a steel product, which involves necessary parts in many industries such as wind power, railway, automobile, shipbuilding and military industry. Such as outdoor standard parts, ductile iron parts for automobiles, gray iron parts, standard parts for railways and wind power, etc., not only require the material of the workpiece to be good, but also require the workpiece to not rust for more than 15 years, and it is also very important for the tension between threads. demanding. In order to prevent the standard parts from rusting, it is convenient for later maintenance. The traditional treatment method is to solve this problem by hot-dip galvanizing or hot-dip galvanizing on the surface of the product. As we all know, the method of hot-dip galvaniz...

AI Technical Summary

Problems solved by technology

Although the anti-rust ability of the iron and steel parts treated by the above method has been improved, the salt spray test can only reach 200 hours (the actual anti-corrosion is less than five years) and it cannot meet the anti-corrosion requirements of 15 years.

There are two main disadvantages: 1. Chemical products are required in the degreasing and derusting process, and heavy metal products such as chromic acid will be used in the follow-up process to complete the passivation process, which will not only pollute the environment but also damage the health of operators ;2. Liquid metal and metal powder are coated on the surface of the workpiece during the hot-dip plating process, which affects the tolerance size between the threads, so that the nuts cannot be screwed on during construction. The nuts must be enlarged, but the enlarged nuts will loosen the threads 、 If the pulling force is not enough, there will be no guarantee for safety