Tekniska Museet
100 Innovations - Tekniska museet

An exhibition at the National Museum of Science and Technology in Stockholm, 2012 – 2018

Metal processing

Metal processing

Ingress för att beskriva innovationen

Metal processing

This brass weight was made in Sweden and used for weighing gold during the second half of the 19th century. TM44545. Photo: Ellinor Algin.

Metal processing

This container containing 40 tons of scrap steel has just been emptied. Scrap steel will be melted down and made into new steel. Photo: Anna Gerdén.

Kort fakta om innovationen

Kort fakta (2) om innovationen

Rubrik för små genier

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Metal processing

Metals are durable, malleable and have conductivity. The one that mankind has known for the longest is gold. Another old metal is copper, which was previously used for axes and is now found in every electric cable. Today steel is the most important metal product both technically and industrially. Steel is made by making iron less soft.

We have extracted and processed metals for about 9,000 years. In the making of steel iron ore is refined by so-called decarbonisation. Cold oxygen is blown towards the heated crude iron to remove carbon and impurities and make the steel durable.

Innovations in steel are an essential condition for economic growth. But growth first occurs when the innovations are used for the profitable production of goods and services.

Rubrik för nördar

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