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ASTM A453 Grade 660 Bolt
QS Fastener: ASTM A453 Grade 660 Bolt
Product : Fujian ASTM A453 Grade 660 Bolt
Size: M20
Material for Bolt and Nut: ASTM A453 Grade 660 Class A
Length: 130 mm
Standard: DIN 976
Application: For High Temperature Service
Size: M20
Material for Bolt and Nut: ASTM A453 Grade 660 Class A
Length: 130 mm
Standard: DIN 976
Application: For High Temperature Service
Quantity
ASTM A453 Grade 660 Bolt is a high-performance fastener. Made from ASTM A453 Grade 660 Class A material, it offers exceptional high-temperature strength, creep resistance, and corrosion resistance, designed for extreme temperature environments. Compliant with the DIN 976 standard, it has a size of M20 and a length of 130mm, ensuring precise installation and secure connections. Suitable for critical applications such as high-temperature equipment, petrochemical installations, and power systems, ASTM A453 Grade 660 Bolt maintains outstanding performance even in high-temperature environments. Choosing it means choosing long-lasting performance and peace of mind!
To ensure the bolt achieves optimal performance, ASTM A453 Grade 660 Bolt undergoes precise machining processes during production. From raw material selection to final forming, every step is strictly controlled to ensure high quality and reliability.
Below is the rolling machine processing procedure:
Rolling (or Roll Forming) Process
Rolling is an efficient and economical metal forming process widely used in thread manufacturing. This process uses designed thread dies and applies pressure to the ASTM A453 Grade 660 Bolt material through a rolling machine to achieve thread formation.
Rolling is an efficient and economical metal forming process widely used in thread manufacturing. This process uses designed thread dies and applies pressure to the ASTM A453 Grade 660 Bolt material through a rolling machine to achieve thread formation.
1. Processing Principle
The basic principle of roll thread forming is to use the rotation and linear motion of the rolling machine, combined with thread dies, to apply pressure and induce plastic deformation of the material. During this process, the dies exert continuous pressure on the ASTM A453 Grade 660 Bolt workpiece, causing the material to flow along the die's geometry, thus forming the desired threads. Compared to traditional cutting methods, rolling reduces material removal, improves material utilization, and enhances production efficiency.
The basic principle of roll thread forming is to use the rotation and linear motion of the rolling machine, combined with thread dies, to apply pressure and induce plastic deformation of the material. During this process, the dies exert continuous pressure on the ASTM A453 Grade 660 Bolt workpiece, causing the material to flow along the die's geometry, thus forming the desired threads. Compared to traditional cutting methods, rolling reduces material removal, improves material utilization, and enhances production efficiency.
2. Equipment and Dies
Rolling Machine:
The configuration of a rolling machine typically includes a main unit, a transmission mechanism, and an adjustable die clamping system. Common rolling machines include two-roll, three-roll, and four-roll machines. The appropriate equipment is selected based on the thread specifications and forming requirements of
Rolling Machine:
The configuration of a rolling machine typically includes a main unit, a transmission mechanism, and an adjustable die clamping system. Common rolling machines include two-roll, three-roll, and four-roll machines. The appropriate equipment is selected based on the thread specifications and forming requirements of
ASTM A453 Grade 660 Bolt.
Thread Dies:
Thread dies are the key components for roll forming, usually made from high-hardness materials (such as high-speed steel or carbide) to withstand high pressure and wear.
The die design requires precise calculations, including thread diameter, pitch, thread shape (e.g., triangular, trapezoidal), and forming angles.
Thread dies are the key components for roll forming, usually made from high-hardness materials (such as high-speed steel or carbide) to withstand high pressure and wear.
The die design requires precise calculations, including thread diameter, pitch, thread shape (e.g., triangular, trapezoidal), and forming angles.
3. Processing Steps
1. Die Setup
Select the appropriate dies based on the thread specifications of ASTM A453 Grade 660 Bolt and correctly install them into the rolling machine. Adjust the die gap to ensure proper contact with the workpiece.
1. Die Setup
Select the appropriate dies based on the thread specifications of ASTM A453 Grade 660 Bolt and correctly install them into the rolling machine. Adjust the die gap to ensure proper contact with the workpiece.
2. Workpiece Preparation
Use suitable raw materials, such as steel rods, stainless steel rods, or aluminum alloy rods. The diameter and length of the raw material must meet the requirements of ASTM A453 Grade 660 Bolt threads.
Use suitable raw materials, such as steel rods, stainless steel rods, or aluminum alloy rods. The diameter and length of the raw material must meet the requirements of ASTM A453 Grade 660 Bolt threads.
3. Roll Forming:
Start the rolling machine, and the workpiece passes through multiple forming cycles between the dies. This process is usually performed as hot rolling but can also be done in a cold state, depending on material and aperture requirements.
Start the rolling machine, and the workpiece passes through multiple forming cycles between the dies. This process is usually performed as hot rolling but can also be done in a cold state, depending on material and aperture requirements.
As the workpiece passes through the dies, the material flows under the die's action, gradually forming the threads. Adjust the speed and pressure settings to ensure thread geometric accuracy and surface quality.
4. Cooling and Deburring
During rolling, the workpiece may generate heat due to friction, so timely cooling is necessary to prevent material deformation caused by overheating.
After forming, deburring is typically performed on the threads to remove burrs and irregular edges generated during the process.
During rolling, the workpiece may generate heat due to friction, so timely cooling is necessary to prevent material deformation caused by overheating.
After forming, deburring is typically performed on the threads to remove burrs and irregular edges generated during the process.
5. Advantages
Roll thread forming technology offers higher productivity, lower mechanical investment, and improved material utilization compared to traditional cutting methods, making it particularly suitable for mass production.
Roll thread forming technology offers higher productivity, lower mechanical investment, and improved material utilization compared to traditional cutting methods, making it particularly suitable for mass production.
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