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Nickel-iron-chromium alloy Incoloy800/825/926 industrial welded pipes
The process of producing nickel-based alloy welded pipe mainly includes the following steps
Preparation of raw materials
Choose suitable alloy materials, such as Incoloy 800, Incoloy 825, Incoloy 926, etc., which need to meet the specific chemical composition requirements.
Cut and pretreatment of raw materials to ensure that the size and shape meet the subsequent processing requirements.
Shaping
Cold forming: For some alloys, cold rolling or cold drawing process can be used to form the pipes. This method is suitable for high dimensional precision requirements.
Hot forming: For pipes requiring large size or shape, hot rolling or hot drawing process can be used. Thermoforming is usually performed at high temperatures to reduce the hardness of the material and to improve the plasticity.
Weld
TIG (tungsten pole argon arc welding): This is a commonly used welding method, suitable for high quality welding requirements. TIG welding can provide good weld quality and a small thermal impact zone.
MIG (metal inert gas protective welding): MIG welding is suitable for thicker materials and larger production volume, with high efficiency.
Laser welding: laser welding can achieve high precision welding, suitable for the production of precision pipe.
Heat treatment
After welding, alloy welded pipes may require heat treatment, such as annealing, ignition or solid treatment, to eliminate welding stress, restore the properties of the material or improve the microstructure of the material.
Finishing
The welded pipe is refined, including deburring, polishing, straightening, etc., to improve the surface quality and dimensional precision of the pipe.
Detection and inspection
Conduct nondestructive testing of the welded pipe, such as ultrasonic detection, radiation detection, to ensure that the weld has no defects.
Conduct mechanical properties tests, such as tensile test, hardness test, to verify that the performance of the material meets the standard requirements.
Surface preparation
As required, the welded pipe surface treatment, such as coating, coating, etc., to improve their corrosion resistance or improve the appearance.
Packaging and shipping
Package qualified welded pipes to ensure no damage during transportation.
Complete all necessary documentation and quality certification, ready for shipment.
The above steps are the general process of producing alloy welded pipe, and the specific process may vary according to the selected alloy type, pipe specifications and application requirements. In the actual production process, the relevant standards and specifications also need to be strictly observed to ensure the product quality.