Zincizing infiltrated layer corrosion resistance process for metal

A technology of infiltration and zinc infiltration, which is applied in the direction of metal material coating process, coating, solid-state diffusion coating, etc., can solve the problems such as the need to improve the anti-corrosion performance, the need to improve the strength and wear resistance of the co-infiltration layer, and the long time. , to achieve the effect of low cost, good weldability and high production efficiency

Inactive Publication Date: 2016-08-10
福建大统铁路精密装备股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the technology proposed in this patent still has the following disadvantages: the time required for heating and co-infiltration is long (usually 4 to 6 hours), the strength and wear resistance of the co-infiltration layer still need to be improved, and the anti-corrosion performance needs to be improved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Carry out alkali washing degreasing and shot blasting derusting treatment on the ferrous metal substrate in sequence;

[0029] Put the zinc-nickel coating and the metal substrate in a closed metal container for heating, rotate the container while heating, the rotation speed is 5-10 rpm, the heating rate is 50-60°C / min, and keep warm when heated to 500°C 120 minutes;

[0030] After heating, cool to room temperature with the furnace, then wash with water to remove ash;

[0031] Wherein, the add-on of zinc-nickel coating is 1.5% of metal substrate weight, and zinc-nickel coating is by zinc powder, nickel powder, aluminum powder and infiltrating agent particle according to zinc powder: nickel powder: aluminum powder: infiltrating agent particle= 1: 0.03: 0.02: 0.09 weight ratio mixed, the particle diameter of zinc powder, nickel powder, aluminum powder and infiltrating agent particle is controlled at 0.1~1mm, and described infiltrating agent particle is made of 40wt% chlor...

Embodiment 2

[0034] Carry out alkali washing degreasing and shot blasting derusting treatment on the ferrous metal substrate in sequence;

[0035] Put the zinc-nickel coating and the metal substrate in a closed metal container for heating, rotate the container while heating, the rotation speed is 5-10 rpm, the heating rate is 50-60°C / min, and keep warm when heated to 480°C 180 minutes;

[0036] After heating, cool down to 100°C with the furnace, then wash with water to remove ash;

[0037]Wherein, the add-on of zinc-nickel coating is 4.5% of metal substrate weight, and zinc-nickel coating is by zinc powder, nickel powder, aluminum powder and infiltrating agent particle according to zinc powder: nickel powder: aluminum powder: infiltrating agent particle= 1: 0.05: 0.04: 0.15 by weight ratio mixed, the particle diameter of zinc powder, nickel powder, aluminum powder and infiltrating agent particle is controlled at 0.1~1mm, and described infiltrating agent particle is made of 90wt% chlorine ...

Embodiment 3

[0040] Carry out alkali washing degreasing and shot blasting derusting treatment on the ferrous metal substrate in sequence;

[0041] Put the zinc-nickel coating and the metal substrate in a closed metal container for heating, rotate the container while heating, the rotation speed is 5-10 rpm, the heating rate is 50-60°C / min, and keep warm when heated to 480°C 180 minutes;

[0042] After heating, cool to room temperature with the furnace, then wash with water to remove ash;

[0043] Wherein, the add-on of zinc-nickel coating is 4.0% of metal matrix weight, and zinc-nickel coating is by zinc powder, nickel powder, aluminum powder and infiltrating agent particle according to zinc powder: nickel powder: aluminum powder: infiltrating agent particle= 1: 0.05: 0.02: 0.15 by weight ratio, the particle diameter of zinc powder, nickel powder, aluminum powder and infiltration agent particles is controlled at 0.1 ~ 1mm, and the infiltration agent particles are composed of 40wt% chlorine...

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Abstract

The invention relates to a zincizing infiltrated layer corrosion resistance process for metal. The zincizing infiltrated layer corrosion resistance process for metal includes the steps that a zinc and nickel infiltrated layer and a metal base body are arranged in a closed metal container to be heated at the heating speed of 50-60 DEG C/min, and subjected to heat preservation heating for 120-180 min when heated to 480-500 DEG C; the adding amount of the zinc and nickel infiltrated layer accounts for 1.5%-4.5% of the weight of the metal base body, and the zinc and nickel infiltrated layer is prepared from zinc powder, nickel powder, aluminum powder and energizer particles with the weight ratio of 1:(0.03-0.05):(0.02-0.04):(0.09-0.15), the particle diameter of the raw materials is controlled to be 0.1-1 mm, the energizer particles are composed of 40-90wt% of rare earth chloride and 10-60wt% of auxiliaries, and the auxiliaries are composed of 50-70wt% of potassium chloride, 20-40% of sodium chloride and 2-10wt% of boric acid. The zincizing infiltrated layer corrosion resistance process for metal is short in period, the strength and abrasion resistance of the infiltrated layer are good, and the mechanical performance and the corrosion resistance of finished products are excellent.

Description

technical field [0001] The invention relates to ferrous metal anticorrosion technology, in particular to an anticorrosion process of metal zinc shedding layer. Background technique [0002] Metal anti-corrosion technology is mainly to form a protective layer through special treatment on the surface of the object, so as to slow down the damage or deterioration of the object under the action of various corrosive substances or environments, so as to prolong the service life of the object. Purpose. Common metal anti-corrosion technologies mainly include electro-galvanizing, hot-dip galvanizing, carbonitriding and dacromet. Some of these treatment technologies will pollute the environment (such as electro-galvanizing and hot-dip galvanizing), some will affect the mechanical properties of the substrate (such as hot-dip galvanizing and carbonitriding), and some have poor anti-corrosion properties (such as electro-galvanizing and hot-dip galvanizing). Zinc dipping), some have low ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C10/52C23C10/02
CPCC23C10/52C23C10/02
Inventor 徐志建
Owner 福建大统铁路精密装备股份有限公司
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