How is pig iron tempered?
Principle: under the condition of high temperature, generated by reaction of coke and oxygen carbon monoxide will iron reduction from iron ore.Raw material: iron ore coke and limestone
Iron is rich in natural reserves, accounting for 5% of the total content of the earth's crust, ranking fourth in the earth's material. Iron is very active and easily combined with other substances.
The customary term for iron and steel is the general term for steel and iron. There is a difference between steel and iron. The so-called iron and steel is mainly composed of two elements, namely iron and carbon, general carbon and elemental iron forming compounds, called iron carbon alloy. The amount of carbon has a great influence on the properties of steel. When the carbon content increases to a certain extent, it will cause qualitative changes. A substance consisting of iron atoms is called pure iron; pure iron has very few impurities. Carbon content is the main criterion for distinguishing iron and steel. The carbon content of pig iron is greater than 2%; the carbon content of steel is less than 2%. Pig iron has high carbon content, hard and brittle, almost no plasticity. Steel has not only good plasticity, but also steel products with high strength, good toughness, high temperature resistance, corrosion resistance, easy processing, impact resistance, easy to refine and other fine physical and chemical properties, so it is widely used.
