Explanation

It is also called soft iron and wrought iron. Iron with carbon content less than 0.0218% and a small amount of dispersed silicate slag. wrought iron is produced by direct reduction of iron ore with carbon, or by melting pig iron and oxidizing impurities. The former has a lower smelting temperature, while the latter has a higher temperature, but after decarburization of pig iron, the liquid iron thickens due to the increase of melting point; Both of them are not easy to separate slag and iron completely. Therefore, wrought iron often contains a small amount of slag. After being milked, slag becomes fibrous or layered along the rolling direction. Therefore, the mechanical properties in the rolling direction are far higher than those in the transverse direction, with a difference of more than 20%. wrought iron has high plasticity and tin oxide, easy to deform with r, and low strength. wrought iron is usually made into thin plates, bar, wire rod, etc. It can be forged or welded. Used for manufacturing rivets, support bolts, water pipes, oil tanks, chains, and forgings. Manganese wrought iron contains about 1% manganese and has high impact strength. Ordinary slag containing wrought iron often has slag cracks. Therefore, it is necessary to control the silicate content and divide the quality grade according to its content 1

Classification