Many friends do not know much about the breeze.
Image source: Pixabay
In fact, the name of the bridle is a translitation of the bridle. At the beginning of the 20th century, the flanges were widely used in various mechanical equipment and pipe connections.
: Merged welding
What is a bridle
The breeze is also called convex brichons or discs.
It is mainly used to connect parts that play a waterproofing role between pipes and valves, between pipes and pipes, and between pipes and equipment. Boiled and sealed, and are called flanges.
Generally, there are round holes on the flange for fixing. The main materials used in the flanges include carbon steel, stainless steel, alloy steel, etc.
Because the straps play an important role and have good complete performance, they are widely used in industries such as the chemical industry, petrochemicals, fire protection and drainage.
The flange is widely used internationally as a connection part, which requires unified standards.
These are the European pipeline breeze system, that is to say the European pipeline shine system represented by the German DIN (including Russia) and the American bridle system represented by American Pipeline Brill.
In addition, there is a JIS pipeline flange system in Japan, and China also has a GB steel pipeline flange system, but the main dimensions are based on the European system and the American system.
Types of straps
The structure of the flange is relatively simple.
From the definition of the flanges, we can know that there are many types and that classifications must be distinguished from different dimensions. are also common bridles.
The integrated flange (IF) is generally used in high pressure pipes.
The flat welding flange is also called the tower welding flange. .
The sustained flange is also called high collar flange. linked to the height.
The loose sleeve flange is also called the loose sleeve flange. , it is therefore often used in connections between large diameter pipes and must often be disassembled, but the adjusted flange is not resisted pressure, so it can only be used for low pipe connections pressure.
The threaded bridle bridle has sons inside, which requires that the interior connection pipes also have external threads to obtain the connection. The flanges are not suitable for use in environments with extremely high or very low use temperatures, because the wires are subject to a pipe leak after thermal expansion and contraction.
Bridle production technology
As a connection sealing component, the flange flees if there are quality problems during the production process, causing economic losses, environmental damage and even security accidents.
Currently, the flange production processes are mainly forged and the casting.
Strap forged
The forged flanges are made by countless beats by the forging machine, which makes the internal structure of tight steel, so that the mechanical properties will be better and the resistance will be high.
First, cut the cylindrical billet as a function of a certain size, heat it to a certain temperature and transform it into thermoplastic, and place it on a cold CAP to allow the forgeage machine to beat continuously The billet, which makes the inside of the tighter and mechanical billet properties.
The round holes on the flange must be buffered on the steel billet by a stamping machine. in a bridle that can be used.
Casting
The casting flanges are characterized by a low manufacturing cost and high efficiency, and can produce flanges with a relatively complex appearance.
The casting flanges are also a commonly used manufacturing process. The weather, then use water to cool it quickly and eliminate the mold, which can also increase the resistance of the flange, and finally it can be used after polishing and treatment of rust prevention.
Although small parts such as the bridle are not important in the entire product, pipeline or machine, the role of the bridle is very important. And firm, ensuring the use of people is safe and reliable.
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