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2007-09-24 06:40:46 · 6 answers · asked by Anonymous in Science & Mathematics Engineering

6 answers

Raw iron is put into a special furnace. Oxygen is blown through the bottom of the furnace so the fire gets super hot, melting the iron. Carbon (coal, usually) is also added at the bottom and the fire gets even hotter. The carbon from the coal is enfused in with the iron to make steel.

For other types of steels, small amounts of other metals are added with the coal and oxygen to the molten mixture (vanadium, nickel, chromium, etc.)

The giant furnace pot can be moved with big overhead cranes, so when it is molten it can be poured out into molds to make useful things.

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2007-09-24 06:48:45 · answer #1 · answered by tlbs101 7 · 2 0

The difference between 'iron' the ore, and steel ( an alloy) is the composition of carbon. Iron is melted in a big crucible (or pot so to speak) and then is injected with oxygen. The mixture is kept above the melting point of the iron and the oxygen burns out the carbon. Once this is done, a controlled amount of carbon is introduced to the mixture. Controlling the carbon content controls the properties of the iron, the end result, basic steel. Old world craftsman perfect a technique of 'folding' in a blast furnace to obtain the same result, it was hot, long, tedious work which made steel a prized possession available only to rich noblemen. In the twentieth century a product called DRI was introduced which could burn out the carbon in poor quality material called scrap, and then be directly melted and alloyed into different steel alloys. This was the start of the 'mini-mill' which took a step or of the process and made it very affordable to do. Hope this helps. The History channel has a great show on the early steel mills in America.

2007-09-24 06:58:11 · answer #2 · answered by mavis b 4 · 0 0

Iron Into Steel

2016-11-02 15:04:29 · answer #3 · answered by ciolli 4 · 0 0

Take the iron down to a scrap yard and sell it. Then use the money to buy some steel.

2016-03-13 05:41:58 · answer #4 · answered by Anonymous · 0 0

whats up says daddy how iron is made into steel

2014-07-10 11:10:48 · answer #5 · answered by Najha 1 · 0 0

adding carbon

2007-09-24 06:44:55 · answer #6 · answered by robertonereo 4 · 0 0

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