The following is a comprehensive knowledge introduction about hot-rolled channel steel：
one、definition
Hot rolled channel steel is a type of steel processed through hot rolling technology，Its cross-sectional shape is concave，Characterized by parallel upper and lower sides and a right angle inside。It is a commonly used material in architecture and engineering structures。
two、Production process
The production process of hot-rolled channel steel mainly includes the following steps：
raw material preparation：Select low-carbon steel or alloy steel that meets the requirements as raw materials。
heating：Feed the steel billet into the heating furnace，Heat to the appropriate temperature，Make it achieve sufficient plasticity。
rolling：After rough rolling、Intermediate rolling and precision rolling processes，Press the steel billet into the desired channel steel shape through a rolling mill。
Cooling and shaping：Hot rolled channel steel needs to undergo cooling treatment，Usually using water cooling or air cooling methods。Afterwards, possible internal stresses and uneven surfaces will be removed through a plastic surgery machine。
Inspection and packaging：Strict inspection of finished products，Including visual inspection、chemical composition、Mechanical performance testing, etc。Qualified channel steel will be packaged，To protect it from corrosion and mechanical damage。
three、Performance characteristics
high strength：Hot rolled channel steel has high tensile strength and yield strength，Capable of withstanding large loads。
Good plasticity and weldability：Easy to process into various shapes，And the welding performance is good，Can meet different engineering requirements。
corrosion resistance：After special treatment，Has good corrosion resistance，Suitable for different environments and media。
Good material uniformity：High temperature rolling makes the internal structure more uniform，Increased the strength and toughness of the material。
Good torsional performance：The cross-sectional shape of channel steel makes it perform excellently in structures that require resistance to torque。
four、application area
building structure：Widely used in bridges、building、In building structures such as roof trusses。
Machinery manufacturing：Used for manufacturing bearing supports、Mechanical components such as connectors。
automobile making：Applied to body structure and chassis components。
ship domain：Used for supporting and reinforcing ship structures。
five、standard
Hot rolled channel steel is mainly based on GB/T 706-2016《hot-rolled section》 standard，Regarding size、public errand、The chemical composition and mechanical properties are clearly defined。
six、summarize
Hot rolled channel steel due to its high strength、Good plasticity and weldability，And excellent corrosion resistance performance，In architecture、Machinery manufacturing、Widely used in fields such as automobile manufacturing。Its production process is mature，Stable product quality，It is an indispensable and important material in modern industry and construction fields。
