Some Knowledge Of hollow section

Dec 30 08:17 2015 Allice S Lee Print This Article

introduce knowledge of hollow section

Now almost in all walks of life will see the figure of the iron and steel,Guest Posting it is currently the most widely used, the largest number of base material, because of steel and iron smelting process compared with other metal is more efficient, cost is relatively low, and when we will chromium, nickel, manganese and other metal elements in iron, also can have different properties of metal materials, it is because of these characteristics of the steel, believe in the future, iron and steel will appear in more different form in more industries. Steel is mainly refers to the carbon content was between 0.04% ~ 2.3% of the iron carbon alloy, according to different classification method, steel can be divided into different categories, for example, in accordance with the quality, can be divided into ordinary steel, high-quality steel and advanced high quality steel

Now almost in all walks of life will see the figure of the iron and steel, it is currently the most widely used, the largest number of base material, because of steel and iron smelting process compared with other metal is more efficient, cost is relatively low, and when we will chromium, nickel, manganese and other metal elements in iron, also can have different properties of metal materials, it is because of these characteristics of the steel, believe in the future, iron and steel will appear in more different form in more industries.

Steel is mainly refers to the carbon content was between 0.04% ~ 2.3% of the iron carbon alloy, according to different classification method, the steel can be divided into different categories, for example, in accordance with the quality, can be divided into ordinary steel, high-quality steel and advanced high-quality steel, the criterion for divided these steel is one of the elements of phosphorus (P) and sulfur (S), because they are both belong to the harmful elements, so of course content, the less the better the quality of the steel. Classified according to chemical composition, can be divided into carbon steel and alloy steel, carbon steel as the name suggests is the high carbon content of steel, the carbon content of mild steel 0.25% or less, medium carbon steel carbon content is between 0.25% ~ 0.60%, the carbon content of high carbon steel for 0.60% or less, but also have high, medium and low alloy steel. In accordance with the purposes, can also be divided into construction and engineering steel, structural steel, tool steel, special steel and professional steel performance, etc., but according to the forming methods, microstructure and steel can be divided into many types, here I can say clear.

Steelmaking by oxidation of carbon and the content of impurity elements in cast iron, eventually reach required standard content of the composition of the steel, currently the most used smelting method for open hearth steelmaking, converter steelmaking and electric furnace steelmaking, open hearth steelmaking mainly gas and heavy oil as fuel, directly under the flame heating method, melt steel scrap and pig iron and other raw materials made from steel, along with the progress of The Times, this method has been gradually out of the line of sight of people, is now the largest number of people to use, and electric furnace steelmaking converter steel-making, converter steelmaking in pig iron steel as raw material, add the right amount of scrap steel manufacturing, efficiency a lot quicker than open hearth steelmaking, the cost is also reduced a lot, so now a lot of large steel iron and steel enterprises are using this method. Electric furnace steelmaking as the name implies, is to use temperature as high as 2000 - degree arc provide smelting heat source, the use of scrap in raw materials, pure oxygen oxidant production, it is because of the uniqueness of electric furnace steelmaking, so can produce high quality steel, but because the technology of power consumption big, the cost is relatively high, so now also appear only in some large enterprises.

Now what we mean by the iron and steel products are mainly divided into three broad categories: pig iron, crude steel, square rectangular tubes. Crude steel after some ways such as forging, can be a torque tube. Said to steel are going to have to mention stainless steel, stainless steel is steel upgrade, people usually put the chromium content is more than 12% or greater than 8% of the nickel content alloy steel known as stainless steel, because in the atmosphere has certain corrosion resistance of stainless steel, high strength, torque tube longer durability, so the current stainless steel has become one of the most common steel material. When using stainless steel must be main its daily maintenance work, in order to prolong the life span of stainless Steel.

   

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Allice S Lee
Allice S Lee

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