Production Process of Welding H-Beam Steel
H-beam steel is widely used in industrial fields, such as steel structure, machinery manufacturing and construction, due to its excellent mechanical properties and load-bearing capacity. H-beam steel is a kind of composite section steel which is formed by cutting a hot-rolled semi-finished steel into a predetermined size, and then welding two H-shaped flanges with web plates. In the production process of welding H-beam steel, various techniques are needed, including cutting and weld preparation, welding and heat treatment.
Cutting and Weld Preparation
In the production process of welding H-beam steel, the first step is to keep the H-beam steel clean and cut it into the required size. Generally, the cutting process of H-beam steel uses a cutting machine, and the cutting speed is generally between 20 and 25 m/min. After cutting, the cut edge of the H-beam steel needs to be ground with a grinding machine to achieve the ideal welding preparation. Then the H-beam steel is sent to the Welding Department for welding.
Welding
The welding process is the most important part of the entire H-beam steel production process. In order to ensure the weld quality of H-beam steel and ensure the strength of the joint welding, an appropriate welding process must be determined before welding. The commonly used welding process for H-beam steel is CO2 shielded arc welding, which is an economical and efficient welding method. The welding parameters need to be adjusted according to the material and profile size of the H-beam steel, and the typical parameters include elecrtric current, welding speed, and number of weld passes. After the welding of each web plate is completed, it will be jointed with two H-shaped flanges. In addition, it is necessary to use a welding tester to detect and judge whether the welding of H-beam steel meets the requirements.
Heat Treatment
The heat treatment process of H-beam steel is generally annealing, which is mainly used to reduce the hardness and strength of the welded parts and eliminate the stress concentration in the welded parts. This process can be carried out in a heating furnace or an induction heating furnace. First, the H-beam steel should be heated to the desired temperature, and then the welded parts should be annealed for a certain period of time. Finally, the H-beam steel should be cooled slowly under the protection of insulation measures.
The above are the main processes and techniques in the production process of welding H-beam steel. Through the correct production process and techniques, the welding quality and welding strength of the H-beam steel can be guaranteed, and its excellent performance can be fully released.
