Preparation process of nano-alloy zinc impregnation

A nano-alloy and preparation process technology, applied in the field of alloy sherardization, can solve the problems of affecting the tolerance size between threads, damaging the health of operators, failing to meet anti-corrosion requirements, etc., and achieve surface size guarantee, safety factor improvement, and anti-corrosion effects improved effect

Pending Publication Date: 2021-09-21
郑州中汇钛金属材料研究院有限公司
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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

Method used

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Embodiment Construction

[0021] The present invention is described in further detail below in conjunction with embodiment.

[0022] A kind of preparation technology of nano-alloy zinc shedding disclosed by the present invention, the preparation method of described nano-alloy zinc shedding comprises the following steps:

[0023] (1) Take the workpiece for sandblasting, degreasing and derusting, followed by ultrasonic nano-processing;

[0024] (2) Put the workpiece processed in step 1 into the mixing and sealing furnace, add metal zinc powder, pass inert gas, then seal the mixing and sealing furnace, and place the container in the heat treatment furnace to continuously rotate, and the workpiece is heated to 200 ℃ ~ 380 ℃ and keep warm for 1-2 hours, using the thermal diffusion of metal atoms to form a Zn / Fe alloy protective coating on the surface of the component.

[0025] (3) Stop heating the hybrid sealing furnace, wait for its natural cooling, then take out the workpiece and carry out high-pressure ...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C10/28C23C10/60C25F3/24C23F17/00C25C1/16
CPCC23C10/28C23C10/60C25F3/24C23F17/00C25C1/16Y02P10/20
Inventor 程斌斌刘诗琪
Owner 郑州中汇钛金属材料研究院有限公司
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