Square tube is an essential material for global construction and modernization, with a wide range of applications and a wide variety. According to different cross-sectional shapes, square tubes are generally divided into four categories: profiles, plates, pipes, and metal products. In order to facilitate the production, ordering, supply, and management of square tubes, they are widely used.
1. The concept of square tube:
Square tubes are materials made from steel ingots, billets, or square tubes through pressure processing to meet our various shapes, sizes, and properties.
Square tube is an essential and important material for the construction and realization of the four modernizations in China. It is widely used and has a wide variety of varieties. According to the different cross-sectional shapes, square tubes are generally divided into four categories: profiles, plates, pipes, and metal products. In order to facilitate the organization of square tube production, ordering and supply, and to improve business management work.
2. The production method of square tubes
Most rectangular tube processing involves plastic deformation of the processed steel (billets, ingots, etc.) through pressure processing. According to the processing temperature of square tube, the square tube can be divided into cold processing and Hot working. The main processing methods for square tubes include:
Rolling: A pressure processing method in which square tube metal billets pass through gaps (various shapes) between a pair of rotating rollers, and the material cross-section decreases and the length increases due to the compression of the rollers. This is a commonly used production method for square tube production, mainly used to produce square tube profiles, plates, and pipes. Divided into cold rolling and hot rolling.
Rolling: A pressure processing method in which square tube metal billets pass through gaps (various shapes) between a pair of rotating rollers, and the material cross-section decreases and the length increases due to the compression of the rollers. This is a commonly used production method for square tube production, mainly used to produce square tube profiles, plates, and pipes. Divided into cold rolling and hot rolling.
Forged square tube: A pressure processing method that uses the reciprocating impact force of a forging hammer or the pressure of a press to change the blank into the shape and size we need. It is generally divided into free forging and die forging, and is commonly used for producing materials with larger cross-sectional dimensions such as large materials and billets.
Pulling square tube: refers to the processing method of drawing rolled metal billets (shapes, tubes, products, etc.) through die holes to reduce the cross-section and increase the length. It is mostly used for cold processing.
Extrusion: A processing method in which a square tube places metal in a closed extrusion chamber and applies pressure at one end to extrude the metal from a specified mold hole to obtain finished products of the same shape and size. It is commonly used in the production of non-ferrous metal square tubes
3. Ferrous, steels and non-ferrous metals
Before introducing the classification of steel, briefly introduce the basic concepts of Ferrous, square tube steel and nonferrous metal.
1. Ferrous refers to iron and its alloy. Such as steel, pig iron, ferroalloys, cast iron, etc. Steel and pig iron are alloys based on iron square tubes, with carbon as the main addition element, collectively referred to as iron carbon alloys.
Pig iron refers to the product made by smelting iron ore into a blast furnace, mainly used for steelmaking and square tube manufacturing of castings. Casting pig iron is melted in a molten iron furnace to obtain cast iron (liquid). The liquid cast iron is cast into a square tube, and this type of cast iron is called cast iron.
Ferroalloy is an alloy composed of iron and silicon, manganese, chromium, titanium and other elements. Ferroalloy is one of the raw materials for steelmaking. It is used as Oxygen scavenger and alloy element additive for steel in square tube steelmaking.
2. Put pig iron for steelmaking into a steelmaking furnace and melt it according to a certain process to obtain steel. The products of steel include ingots, continuous casting billets, and various steel castings formed by square pipe joint casting. The commonly referred to steel generally refers to steel rolled into various square tubes. Square tube steel belongs to Ferrous, but steel is not completely equal to black gold
Post time: Jun-20-2023
