Macroscopic Analysis Of Crucible In Ancient Times

Mar 09, 2020

The first step to study the crucible is to make a detailed macroscopic observation of the crucible, such as its shape, size, wall thickness, material, heating condition, metallurgical residue, etc., so as to preliminarily judge the crucible's use and use method. The first step to study the crucible is to make a detailed macroscopic observation of the crucible, such as its shape, size, wall thickness, material, heating condition, metallurgical residue, etc., so as to preliminarily judge the crucible's use and use method. 

The crucible of metallurgy in ancient China is mainly divided into casting crucible and smelting crucible. Early, such as the first kind of foundry crucible crucible, shallow, exposure, the inside of the sintering serious and slag, and the lower level of the lateral heat is heated, crucible material looks not very dense refractory, walls thicker, sometimes mixed with plant fiber, has good heat insulation performance, sintering, namely the inside crucible is heated, the outside also can maintain at a low temperature. 

The late crucible (such as the third type for casting and most of the crucible for smelting) is usually a deep, small-opening container with the same degree of internal and external sintering, indicating that it is externally heated. The material of the crucible is relatively dense, refractory, the wall is relatively thin, and it has good thermal conductivity, so as to facilitate the heat transfer from the outside to the inside. The change of metallurgical crucible with time in ancient China is consistent with that in the west.