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Stainless steel high pressure flange manufacturers to accelerate the formation of new features

Stainless steel high pressure flange manufacturers to accelerate the formation of new features

Stainless steel high-pressure flange manufacturers to accelerate the formation of new features, the flange in the actual production and development in different ways and processes for production and production, in accordance with the way and principles of the process, on different aspects can produce important value and role , In the actual production to add a certain element, thereby increasing the carbon steel flange characteristics and value, the use of good performance characteristics and value.
Stainless steel high-pressure flange in the actual production process, using a certain technical parameters and requirements for production and application to ensure that in accordance with certain ways and principles for the correct use and promotion, colleagues use a certain process and the principle of production and welding , To ensure that the high-pressure flange in the use of reliable quality.
Steel welded flange products
1, the principle of sealing is plastic deformation
2, by bolts
3, bolts to withstand tension, temperature stress, and bear the bending moment, torque and many other external stress
4, bulky, heavy weight, the installation is very difficult.
5, sealing performance is unstable, especially in the harsh (high temperature, high pressure, the media are highly toxic) in the case of prone to leakage, resulting in serious consequences
Because stainless steel has good corrosion resistance, it allows the structural parts to permanently maintain the integrity of the engineering design. Chromium-containing stainless steel also set the mechanical strength and high elongation in one, easy to manufacture parts.
In piping works, stainless steel flanges are mainly used for connecting pipes. Need to connect the pipes, various mounting flanges, low pressure pipes can use wires connected to the flanges, use more than 4 kg pressure welding flanges, seal between the two flanges, and then fasten with bolts. Different pressure flanges, with different thicknesses and the use of different bolt pumps and valves and piping connections, these parts of the device also do the corresponding flange shape.
Because stainless steel has good corrosion resistance, it allows the structural parts to permanently maintain the integrity of the engineering design. Stainless steel flanges do not produce corrosion, pitting, corrosion or wear. Chromium-containing stainless steel flanges also provide mechanical strength and high elongation in one, easy to manufacture parts, can be satisfied with the needs of architects and structural designers. All metals react with oxygen in the atmosphere to form an oxide film on the surface. If holes are formed, the surface of the carbon steel can be secured by the use of paint or oxidation resistant metal plating, but, as is known, this protection is only a film.
On the high-pressure flange of the product level and technical requirements should be consistent with the relevant requirements in JB4726-4728. Specified carbon steel or austenitic stainless steel forgings with nominal pressure of 0.25MP to 1.0MPa are allowed to be manufactured using grade 1 forgings. Nominal pressure between 1.6MPa-6.3MPa forging, should meet the level II or more than forging level requirements. For the nominal pressure of not less than 10.0MPa flange forging, nominal pressure of more than 4.0MPa of chromium molybdenum steel forgings, nominal pressure of more than 1.6MPa and the working temperature does not exceed -20 degrees Celsius ferritic steel forgings products, such a flat welding Flange forgings must comply with the requirements of Class III forgings.
Normally stainless steel high-pressure flanges are manufactured using forging or forging technology. And if you want to use steel or steel materials for manufacturing, it must meet these requirements. Stainless steel high-pressure flange must be tested by ultrasonic testing, the test should be no stratification defects. It is to be cut into strips according to the rolling direction of the steel, and it is welded into a ring by a bending process. At the same time, the steel surface is formed on the surface of the steel, and the steel sheet can not be machined into a neck Of the high pressure flange. For the butt welds of the ring, it is necessary to use the form of full penetration weld, the ring butt weld must be heat treated after welding, but also for 100% ray or ultrasonic flaw detection test, and its ray detection results should be consistent JB4730 in the class II requirements, stainless steel high-pressure flange by ultrasonic flaw detection results, must meet the JB4730 in the I-level requirements.

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