Have you heard of the manufacturing process of stainless steel coiled tubing?
By: mxgy,
Stainless steel coiled tubing is a new type of oil pipe with a length of several kilometers, which can be bent repeatedly and achieve multiple plastic deformations. Coiled tubing is mainly used in oil and gas field workover, drilling, completion, logging and other operations. In many foreign countries, such as the United States and Canada, it is an indispensable petroleum equipment.
So have you heard of the manufacturing process of stainless steel coiled tubing? There are 7 core processes for the manufacture of stainless steel coiled tubing, as follows:
1) Processing: After the work hardening caused by dislocation proliferation and the Bauschinger effect work together, the transformation law of the tube body strength is controlled.
2) Heat treatment: Heat treatment of the pipe body to achieve further control of the structure and properties, especially for high strength and high plasticity and low residual stress.
3) Chemical elements: Due to the harsh service environment, there are high requirements for the mechanical properties and corrosion resistance of coiled tubing materials. To optimize the chemical composition of materials, it is also necessary to realize the whole process of smelting and rolling. Purification control to minimize inclusions and harmful elements such as S and P.
4) Plate butt joint: In order to achieve continuous production of HFW welded pipes, the plates must be lengthened first. The current plate butt joint mainly adopts methods such as TIG, MAG and plasma welding. Another method being studied is called friction stir welding.
5) Pipe butt joint: The stainless steel coiled tubing may be partially damaged during use. At this time, the damaged and defective parts must be cut off and the pipes connected by welding. The traditional butt joint method generally adopts manual TIG welding, and the welding quality is difficult to control. Currently using fully automatic welding technology.
6) Welding technology: For low-carbon micro-alloy steel, HFW welding technology is mainly used nowadays, and it is necessary to study the optimal welding process parameters (such as current, voltage, frequency, welding speed, forming angle, extrusion amount, etc.), and study the welding seam And weld heat treatment technology.
7) New manufacturing technology: such as CVR technology, which refers to continuous tubes using tube billets of the same specification, which are heated online to 940°C by intermediate frequency induction and thermomechanical rolling. On the one hand, it can achieve variable wall thickness or diameter. In addition, there are laser welding technology for special stainless steel coiled tubes.
Have you heard of the manufacturing process of stainless steel coiled tubing?
By: mxgy,
Stainless steel coiled tubing is a new type of oil pipe with a length of several kilometers, which can be bent repeatedly and achieve multiple plastic deformations. Coiled tubing is mainly used in oil and gas field workover, drilling, completion, logging and other operations. In many foreign countries, such as the United States and Canada, it is an indispensable petroleum equipment.
So have you heard of the manufacturing process of stainless steel coiled tubing? There are 7 core processes for the manufacture of stainless steel coiled tubing, as follows:
1) Processing: After the work hardening caused by dislocation proliferation and the Bauschinger effect work together, the transformation law of the tube body strength is controlled.
2) Heat treatment: Heat treatment of the pipe body to achieve further control of the structure and properties, especially for high strength and high plasticity and low residual stress.
3) Chemical elements: Due to the harsh service environment, there are high requirements for the mechanical properties and corrosion resistance of coiled tubing materials. To optimize the chemical composition of materials, it is also necessary to realize the whole process of smelting and rolling. Purification control to minimize inclusions and harmful elements such as S and P.
4) Plate butt joint: In order to achieve continuous production of HFW welded pipes, the plates must be lengthened first. The current plate butt joint mainly adopts methods such as TIG, MAG and plasma welding. Another method being studied is called friction stir welding.
5) Pipe butt joint: The stainless steel coiled tubing may be partially damaged during use. At this time, the damaged and defective parts must be cut off and the pipes connected by welding. The traditional butt joint method generally adopts manual TIG welding, and the welding quality is difficult to control. Currently using fully automatic welding technology.
6) Welding technology: For low-carbon micro-alloy steel, HFW welding technology is mainly used nowadays, and it is necessary to study the optimal welding process parameters (such as current, voltage, frequency, welding speed, forming angle, extrusion amount, etc.), and study the welding seam And weld heat treatment technology.
7) New manufacturing technology: such as CVR technology, which refers to continuous tubes using tube billets of the same specification, which are heated online to 940°C by intermediate frequency induction and thermomechanical rolling. On the one hand, it can achieve variable wall thickness or diameter. In addition, there are laser welding technology for special stainless steel coiled tubes.
