{"id":7047,"date":"2020-11-24T21:36:00","date_gmt":"2020-11-24T20:36:00","guid":{"rendered":"https:\/\/ecocranes.hu\/a-darugyartas-alapanyaga-az-acel-ii-resz\/"},"modified":"2026-09-04T13:20:55","modified_gmt":"2026-09-04T11:20:55","slug":"a-darugyartas-alapanyaga-az-acel-ii-resz","status":"publish","type":"post","link":"https:\/\/ecocranes.hu\/en\/a-darugyartas-alapanyaga-az-acel-ii-resz\/","title":{"rendered":"Steel, the raw material for crane construction - Part II"},"content":{"rendered":"

Our series of articles on the steel production process <\/strong>in the first part<\/strong><\/a> we stopped there, where the hot, liquid pig iron was drained from the iron ore after the reduction processes in the blast furnace. Let's see how pig iron becomes steel!<\/strong><\/p>\n

Definition of steel<\/h2>\n

One of the most important raw materials for industry, from<\/em> steel<\/a> an alloy of iron and carbon<\/strong>, containing up to 2.06% of carbon (known in metallurgy as carbon).<\/p>\n

A\u00a0carbon content<\/strong><\/em> essentially determines the properties of steel in use, so one of the primary tasks in steel production is to keep the carbon content of the finished steel within the narrowest tolerance range of the desired value.<\/pre>\n
In addition to the carbon content, other pollutants such as minimising manganese, silicon, sulphur and phosphorus<\/strong> <\/em>is also of paramount importance in the process.<\/p>\n
Relatively small amounts\u00a0sulphur<\/u>\u00a0<\/strong><\/em>also noticeably increases the tendency of steel to crack<\/strong><\/em> for higher temperature applications and machining. A\u00a0phosphorus<\/u>\u00a0<\/strong><\/em>and the steel rideged<\/strong><\/em> and reduces its elasticity, making it unsuitable for daruk<\/a> or lifts<\/a> for the production of.<\/p>\n
Since nowadays only they produce liquid steel<\/strong><\/em>, the procedures are called process target procedures. The heat required to maintain the steel in a liquid state is provided by the oxidation heat of the reactions or external energy.<\/p>\n
\u00a0<\/p>\n
Overview of the steel production process<\/h2>\n
Unlike pig iron production, which was described in more detail in our last article, steel production is not a reduction process, but an oxidation process. In steelmaking, the rawvas<\/a>in the carbon is reduced by oxidation, i.e. by burning it off<\/strong><\/em>.<\/p>\n
The steelmaking process basically consists of three stages:<\/strong><\/em><\/p>\n