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NF NC21FeDU Bolt
QS Fastener: NF NC21FeDU Bolt
Name: NF NC21FeDU Bolt
Material: BSW NA16
Size: M42*3
Length: 430 mm
Standard: NF, BSW, DIN, ASTM
Hardness: Max. 200 HB
Feature: Good Resistance to Stress Corrosion Cracking
Application: For Industrial areas where the temperature does not exceed 550 degrees Celsius
Material: BSW NA16
Size: M42*3
Length: 430 mm
Standard: NF, BSW, DIN, ASTM
Hardness: Max. 200 HB
Feature: Good Resistance to Stress Corrosion Cracking
Application: For Industrial areas where the temperature does not exceed 550 degrees Celsius
Quantity
The NF NC21FeDU Bolt is manufactured from BSW NA16 high-quality alloy, with dimensions of M42*3 and a length of 430 mm. It is available in standards such as NF, BSW, DIN, and ASTM, with a hardness not exceeding 200 HB, ensuring excellent performance in high-temperature and corrosive environments. This bolt offers superior resistance to stress corrosion cracking and is suitable for industrial applications with temperatures up to 550°C, including chemicals, petroleum, natural gas, and high-temperature equipment. Whether facing extreme temperatures or highly corrosive conditions, the NF NC21FeDU Bolt provides reliable connection solutions, ensuring the safety and stability of equipment operations.
The hot working process (including hot forging and hot rolling) of the NF NC21FeDU Bolt is a critical step in ensuring material uniformity and density. By carefully controlling processing temperature, deformation rate, and cooling conditions, the microstructure of the material can be optimized, enhancing its mechanical properties and corrosion resistance. The NF NC21FeDU Bolt is precisely engineered from this high-performance material, providing reliable solutions for fastening needs in extreme environments.
1. Overview of Hot Working Process
Hot Forging: A process that involves shaping material through plastic deformation under high temperature and pressure.
Hot Rolling: A process that involves continuous plastic deformation of material through rollers at high temperatures to form plates, bars, or tubes.
Hot Forging: A process that involves shaping material through plastic deformation under high temperature and pressure.
Hot Rolling: A process that involves continuous plastic deformation of material through rollers at high temperatures to form plates, bars, or tubes.
Objective: Hot working eliminates casting defects (such as porosity and shrinkage), refines grain structure, and improves material uniformity and density. The NF NC21FeDU Bolt ensures long-term stability in high-temperature and corrosive environments through optimized hot working processes.
2. Control of Hot Working Parameters
The hot working of the NF NC21FeDU Bolt requires strict control of the following parameters to ensure material performance:
The hot working of the NF NC21FeDU Bolt requires strict control of the following parameters to ensure material performance:
2.1 Processing Temperature
Hot Forging Temperature Range: 950-1200°C
Starting Temperature: 1200°C (to avoid overheating and grain coarsening)
Ending Temperature: 950°C (to avoid cracking due to low temperature)
Hot Rolling Temperature Range: 1000-1150°C
Starting Temperature: 1150°C (to ensure good material plasticity)
Ending Temperature: 1000°C (to avoid work hardening due to low temperature)
Hot Forging Temperature Range: 950-1200°C
Starting Temperature: 1200°C (to avoid overheating and grain coarsening)
Ending Temperature: 950°C (to avoid cracking due to low temperature)
Hot Rolling Temperature Range: 1000-1150°C
Starting Temperature: 1150°C (to ensure good material plasticity)
Ending Temperature: 1000°C (to avoid work hardening due to low temperature)
The NF NC21FeDU Bolt ensures stability and reliability in high-temperature environments through precise control of processing temperature.
2.2 Deformation Rate
Hot Forging Deformation Rate: 0.1-1.0 s⁻¹
Excessive deformation rates may lead to localized overheating and cracking.
Insufficient deformation rates may result in grain coarsening.
Hot Rolling Deformation Rate: 5-20 s⁻¹
Ensures uniform deformation during rolling, avoiding localized stress concentration.
Hot Forging Deformation Rate: 0.1-1.0 s⁻¹
Excessive deformation rates may lead to localized overheating and cracking.
Insufficient deformation rates may result in grain coarsening.
Hot Rolling Deformation Rate: 5-20 s⁻¹
Ensures uniform deformation during rolling, avoiding localized stress concentration.
The NF NC21FeDU Bolt ensures material uniformity and density during processing by optimizing the deformation rate.
2.3 Cooling Conditions
Cooling Methods: Air cooling or water cooling
Air Cooling: Suitable for thicker workpieces to avoid internal stress from rapid cooling.
Water Cooling: Suitable for thinner workpieces to improve cooling efficiency and refine grain structure.
Cooling Methods: Air cooling or water cooling
Air Cooling: Suitable for thicker workpieces to avoid internal stress from rapid cooling.
Water Cooling: Suitable for thinner workpieces to improve cooling efficiency and refine grain structure.
Cooling Rate: 10-50°C/min
Excessive cooling rates may lead to residual stress.
Insufficient cooling rates may result in grain coarsening.
Excessive cooling rates may lead to residual stress.
Insufficient cooling rates may result in grain coarsening.
The NF NC21FeDU Bolt optimizes the microstructure of the material after processing by controlling cooling conditions, enhancing its mechanical properties and corrosion resistance.
3. Summary
The hot working process (hot forging and hot rolling) of the NF NC21FeDU Bolt is a critical step in ensuring material uniformity and density. By carefully controlling processing temperature, deformation rate, and cooling conditions, the microstructure of the material can be optimized, enhancing its mechanical properties and corrosion resistance. The NF NC21FeDU Bolt ensures long-term stability in high-temperature and corrosive environments through optimized hot working processes, making it an ideal choice for industries such as petrochemicals, nuclear energy, and aerospace.
The hot working process (hot forging and hot rolling) of the NF NC21FeDU Bolt is a critical step in ensuring material uniformity and density. By carefully controlling processing temperature, deformation rate, and cooling conditions, the microstructure of the material can be optimized, enhancing its mechanical properties and corrosion resistance. The NF NC21FeDU Bolt ensures long-term stability in high-temperature and corrosive environments through optimized hot working processes, making it an ideal choice for industries such as petrochemicals, nuclear energy, and aerospace.
In practical applications, the NF NC21FeDU Bolt demonstrates excellent uniformity and density, meeting the long-term usage requirements in complex high-temperature environments. Whether facing extreme temperatures or highly corrosive media, the NF NC21FeDU Bolt provides reliable connection solutions, ensuring the safety and stability of equipment operations.
When selecting fasteners for demanding industrial applications, the NF NC21FeDU Bolt stands out as a reliable choice, offering exceptional performance under the most challenging conditions.
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