Coating method of fiber tie layer of metal fiber carrier

Abstract

The invention discloses a coating method of fiber connection layers of metal fiber carries. The coating method comprises the following steps: 1) immersing a metal wire mesh into fiber slurry and dipping; 2) spraying and coating titanium powder on the surface of the metal wire mesh uniformly; 3) curing the metal wire mesh which is sprayed and coated with titanium powder in a sintering furnace at a first preset temperature for first preset time; 4) taking out the metal wire mesh, then dipping the metal wire mesh into the slurry for dipping or spraying and watering the fiber slurry on the metal wire mesh, and purging compressed air uniformly on the metal wire mesh after dipping and taking out or in spraying and watering; 5) spraying and coating titanium powder on the surface of the metal wire mesh uniformly; 6) cleaning the metal wire mesh, and curing in a sintering furnace at second preset temperature for second preset time; 7) repeating the steps 4) and 6) at least once; 8) sintering the metal wire mesh in a sintering furnace at a third preset temperature for third preset time. The coating method of the fiber connection layer can be used for effectively preventing the exposure of the metal wire mesh due to the blocking of the fiber connection layer.

Description

technical field [0001] The invention relates to the technical field of air purification, in particular to a method for coating a fiber contact layer of a metal fiber carrier. Background technique [0002] With the progress of the economy and society, the rapid development of the automobile industry, the rapid increase in the number of automobiles, the environmental pollution caused by automobile exhaust is also becoming more and more serious. Therefore the purification problem of automobile tail gas, is subjected to people's attention day by day. Among them, the metal fiber carrier is installed on the exhaust gas assembly of the automobile, and a catalyst that reacts with the exhaust gas is coated on it to achieve the purpose of purifying the exhaust gas. [0003] Among them, the metal fiber carrier is generally coated with a fiber contact layer on a wire mesh. In the production process, the wire mesh is first completely immersed in the fiber slurry to soak, and then the me...

AI Technical Summary

Problems solved by technology

However, in the above-mentioned production process, the wire mesh is only soaked once and then rolled and sintered, and agglomeration often occurs after sintering, resulting in partial exposure of the wire mesh, which affects the purification effect of the metal fiber carrier on automobile exhaust.

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