Multicomponent alloy infiltration anticorrosion method

Abstract

The invention belongs to the technical field of metal surface anticorrosion, and more specifically relates to a zincizing enclosing anticorrosion method. The zincizing enclosing anticorrosion method is simple in technology, excellent in corrosion resistance and wear resistance, and high in toughness, tensile strength, and yield strength, and is friendly to the environment. The zincizing enclosinganticorrosion method comprises following steps: surface treatment shot blasting, high temperature heating, double zinc aluminum wire capacitance spraying onto steel surface, secondary heating penetration, and forming of surface zinc aluminium ferroalloy layers. The best collision resistance and corrosion resistance are achieved, and zincizing waste heat is adopted for another time of spraying of sealing layer alloy powder. The zincizing enclosing anticorrosion method is widely adopted in the field of steel structure member anticorrosion processing.

Description

technical field [0001] The invention relates to the technical field of anticorrosion of metal surfaces, in particular to a method for sealing anticorrosion by sherardizing. Background technique [0002] Railway track equipment, bolts, spikes, track fasteners and catenary fittings are installed in the open air, exposed to wind, sun, rain, severe cold, high temperature, rain, wind and sand, severe air pollution, especially acid rain. Some anti-corrosion processes and methods cannot meet the requirements of the product. Especially with the rapid development of my country's high-speed railways today, higher requirements are put forward for the anti-corrosion performance of track equipment. Bridges with reinforced concrete structures also suffer from corrosion problems. The main reasons are freezing damage, chemical corrosion, steel corrosion and alkali aggregate reaction, etc., especially due to humidity, temperature and CO 2 The role of the concrete will cause the carbonizat...

AI Technical Summary

Problems solved by technology

In these methods, the corrosion resistance of the paint is poor, the coating is not well bonded, and it is easy to peel off; the corrosion resistance of Dacromet is very good, but the coating is thin and soft, not wear-resistant, and easy to peel off; the nitriding hardness is high and wear-resistant , the combination is good, but the corrosion resistance is not enough; hot-dip galvanizing can obtain a thick coating, but the surface quality is not high, and it is easy to nodulate, especially the groove of the threaded part is easy to be filled and cannot be used

At the same time, the pollution of hot-dip galvanizing is serious, the temperature is high and the energy consumption is high, and some parts such as spring bars are not suitable for use.

In the prior art, the corrosion resistance of the parts is often improved by increasing the thickness of the corrosion-resistant layer, but this also changes the size of the parts and increases the difficulty of the cooperation between the parts

[0003] The process of alloy co-infiltration needs to be vacuumed, and the temperature of the structural parts should be adjusted accurately in a vacuum state. Therefore, the requirements for process conditions and equipment are high, and because the structural parts need to be vacuumed, the vacuum heating box also limits the structure. piece size

At the same time, alloy co-infiltration is mainly used for components that require high temperature resistance, corrosion resistance and impact resistance, and it is impossible to perform co-infiltration treatment on the overall structural parts