Overview of Honeycomb Ceramics
1.Introduction to Honeycomb Ceramics
Honeycomb ceramic is a kind of porous ceramic. Its internal shape is many parallel channels in honeycomb shape. The honeycomb body unit is divided by grid-like thin partitions. It is mainly used to deal with air pollution problems.
2.Honeycomb Ceramics Classification
According to different materials, honeycomb ceramics can be divided into cordierite, aluminum titanate, silicon carbide, zirconia, silicon nitride and composite materials; according to different uses, honeycomb ceramics can be divided into regenerators, fillers, catalyst carriers and There are four types of filter materials.
Among various honeycomb ceramic carriers, TWC and GPF are used in gasoline vehicles, and SCR, DOC, ASC and DPF are used in diesel vehicles.
3.Honeycomb ceramics preparation process
Preparation process: The main molding methods of honeycomb ceramics are extrusion method, molding method, dipping method and hot casting method. At present, the extrusion molding method is mostly used, which has high production efficiency, simple process, and can realize continuous molding.
The core technology of preparation is mainly reflected in the control of thermal expansion coefficient, wall thickness, pore density, etc., and has higher requirements on the purity and ratio of raw materials, molding die, extrusion process and sintering process.
4.Honeycomb Ceramics – Finished Additives
When honeycomb ceramics are extruded, various additives must be added to the raw materials to improve the plasticity and fluidity of the mud.
Common additives used in the preparation of honeycomb ceramics are:
5.Honeycomb Ceramics Processing – Cutting
Honeycomb ceramics are mostly cut by annular diamond wire cutting machine, below the honeycomb ceramics cutting video for reference:
6.Honeycomb Ceramics Application
Application: Honeycomb ceramics were first used in the purification of small car exhaust, and now they have been widely used in chemical, electric power, metallurgy, petroleum, electronic appliances, machinery and other industries
