What material is the enamel glass lined reactor

In many industrial fields such as chemical,pharmaceutical,pesticide,etc.,we often see a special equipment with a smooth surface like a mirror and a hard texture like porcelain-enamel reaction kettle.
Firstly,provide a direct answer:the material of the enamel glass lined reactor is not a single substance,but a typical composite material structure.The substrate material is excellent low-carbon steel,while the inner surface layer material in contact with the material is high-performance silicate glass glaze.
Simply put,it is made of glass for the inner container and steel for the outer shell.This structure cleverly combines the toughness and strength of metals with the stability and inertness of glass,achieving the effect of 1+1>2.

For a better understanding,we can divide the material structure of the reactor into the following two layers:

1.Metal substrate layer(embryo)
Material:Glass lined reaction vessels are usually made of high-quality low-carbon steel.This is because low-carbon steel has good ductility,mechanical strength,and weldability,which can manufacture sturdy container shells that can withstand certain pressures and temperatures.At the same time,its coefficient of thermal expansion is relatively close to the glass glaze layer that is about to cover it,which is the key physical basis for the two to firmly bond.
Function:To provide the structural strength of the equipment,withstand working pressure,mechanical loads,and material weight,and ensure the stability and durability of the equipment under complex working conditions.
2.Glass lined layer(porcelain layer)
Material:This is a carefully designed and high-temperature fired silicate glass glaze.Its main components include silicon dioxide(SiO₂),borax(Na₂B₄O₇),feldspar,quartz,and various metal oxides that enable the ceramic layer to achieve specific properties such as acid resistance,alkali resistance,enhanced gloss,and stable color.
In summary,the material of the enamel glass lined reactor is made of steel as the bone,giving it shape and strength;Using glass as the skin,endowing it with cleanliness and stability.This combination of steel and porcelain has created a classic and irreplaceable equipment in the industrial field.Understanding its material composition not only helps us select and use it correctly,but also enables us to appreciate the enormous value brought by the combination of material science and process technology.