Pig iron, wrought iron and steel from three?
The difference between iron and steel: iron into pig iron and wrought iron, wrought iron, steel and cast iron is an alloy of iron and carbon with the carbon content difference. Generally less than 0.2% carbon content called wrought iron or iron, the contents of 0.2-1.7% in the steel, content of more than 1.7% is iron. Iron soft plastic. Good, easy to deformation, strength and hardness were lower, not widely used;
The carbon content of less than 0.05% iron, wrought iron is called the carbon content in 0.05%; 2% of the iron and steel. Called the iron block through carbon steel knife, although relatively sharp, but still not to be able to "cut gold and jade broken, very sharp." because the quality of the steel is not good enough. How much carbon into the steel, refining, distribution is uniform, the impurities removed, are very difficult to grasp, and the production efficiency is very low. In order to improve the quality of steel, China ancient craftsmen invented the new process of "steel" from the Western Han Dynasty since the mid Northern Song Dynasty. The famous scientist Shen Kuo described 100 steelmaking process of magnetic state in the "Meng Xi Bi Tan", is the continuous burning forging hundreds of times, and weight reduction so far. The so-called "steel", is the iron block repeatedly heating forged steel, the compact and uniform composition, less impurities, so as to improve the quality of steel with steel. The quality of the sword made is very high
A lot of carbon containing iron, hard and brittle, almost no plastic; steel pig iron and wrought iron with two kinds of advantages, widely used for human beings.I usually choose the material material is iron. However, it must be a good sword. The iron and steel smelting steel the difference there? We know that the main difference lies in the pig iron, wrought iron and steel carbon content, carbon content of more than 2% iron, called pig iron;
