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中文简体Stainless steel tubes are typically heated in a bright annealing furnace. This process is used to eliminate strain hardening and improve the microstructure of the material. It is also used to increase the surface finish of the material. Bright annealing is a common process in China, but it is also used in other parts of the world.
Bright annealing is used in many different industries, including chemical applications. It produces a very bright surface and a thin oxide layer that protects the steel from oxidation. This means that bright annealed products have a higher tensile strength and corrosion resistance than pickled and annealed materials. In addition, bright annealed products have a smoother surface, which improves their pitting resistance. The process also reduces the oxidation degree of the surface, which lowers the risk of general corrosion.
A bright annealing furnace is a closed furnace that uses a protective atmosphere. The gas used for the protective atmosphere is typically a mixture of hydrogen and nitrogen from a dissociated ammonia. The ammonia has a dew point of less than -50 degrees Celsius. This allows the tube to be heated at a high temperature, but prevents oxygen from entering the furnace. This helps to maintain a uniform oxidation level.
The process of bright annealing is very precise, and it requires a high degree of cleanliness and control. This means that the furnace must be able to produce a clean surface that is free of any foreign matter. A pristine surface is important for the process, since foreign matter can cause damage to the tube during processing.
The bright annealing furnace must be able to provide a protective atmosphere that is free of oxygen. This can be done by inserting shielding gas into the furnace. However, this is not an ideal method of annealing, as this can cause scaling on the metal surface. Bright annealing must also be done in a vacuum. This means that the furnace must be tight and clean. It is also important to remove atmosphere samples from the furnace at regular intervals.
Bright annealing is a very precise and fast process. Compared to the traditional furnace, it only needs a short amount of time to heat the stainless steel tube. This means that it is also a great option for applications that require a high level of precision. However, it is also important to use the right annealing atmosphere. This can be done by using argon, dry hydrogen, or other gases. The process can also be done using an inter-fuel atmosphere, which prevents oxygen from entering the furnace.
Bright annealing is an important process, as it produces a bright surface. It also has other advantages, such as improving the corrosion resistance of the steel. In addition, it also helps to improve the ductility of the material. The annealing process also helps to prevent the formation of a residual stress.
The bright annealing process is used to enhance the properties of metals, improving their strength, corrosion resistance, and processability. In addition, it also helps to reduce the time it takes to preserve the material's heat.
Specifications: OD6.35mm-OD38.1mm
Main material: TP316L, 316L (high sulfur), 316LSS, etc.
Production standard: ASTM A269/ASTM A270/ ASME A270-BPE/ EN10216-5/ EN10305-1/ISO 1127.
(1) Features: On the basis of high-quality BA pipe, the inner surface is electrochemically polished, then purified with high-purity water, and finally packed with nitrogen. This process requires the diameter of the stainless steel pipe to be controlled within a tolerance of ±0.02mm (0.1%), the length of the stainless steel pipe to be controlled within a tolerance of ±0.05mm, the straight line curvature not greater than 0.1mm/m, the surface roughness of the finished EP pipe Ra≤0.2μm, concentricity Controlled within the tolerance of ±0.01mm, the mechanical properties control range can be adjusted and controlled to the hardness HRB (75~580), the strength δb and the elongation Ψ; the tube is made by solid solution treatment in a reducing atmosphere of heat treatment.
(2) Delivery status: electrolytic polishing (EP) electrolytic polishing
(3) Inspection and packaging instructions: eddy current non-detection, water pressure test; coding PE bag, cap, shock-absorbing packaging, dust-proof packaging, protection and protection
(4) Application:
● Semiconductor
● Medical catheter
● food and drink
● Pharmaceutical
● Ultra-high tube heat exchanger
● High purity gas and fluid piping system
