Release time：2020-01-16 18:44 Browse：
When discussing the technical issue of the maximum torque that the extension screw can withstand, we first need to clarify several key elements: the material, specifications, use environment and installation process of the screw, which together determine the bearing capacity and maximum torque limit of the screw.
### Influence of material
Different materials of screws have different mechanical properties and torque bearing capacity. For example, nylon screws, due to their lower strength and stiffness, usually require less torque to achieve tightening, so their maximum torque value is relatively low. On the contrary, steel screws, especially high-strength alloy steel or stainless steel screws, have higher tensile strength and shear strength, and can withstand greater torque without breaking or failing. Therefore, when choosing a lengthening screw, the choice of material is crucial, which directly determines the torque bearing capacity of the screw.
### Differences in specifications
The specification of the screw is also one of the important factors in determining its maximum torque. Specifications are usually expressed in diameter and length, and screws with different diameters and lengths have different sectional moments of inertia and stiffness, which affects their ability to resist torque deformation. Taking the common M6 and M8 screws as an example, M8 screws due to the large diameter, its section moment of inertia and stiffness are correspondingly large, so the torque range that can withstand is usually higher than M6 screws. Specifically, the torque value of M6 screws is generally between 10-30 N·m, while the torque value of M8 screws can reach 20-50 N·m or even higher. Of course, these values are for reference only, and the actual application needs to be adjusted according to the specific material, heat treatment state and use environment.
### Environmental impact of use
The use environment also has a significant impact on the torque bearing capacity of the extension screw. For example, in harsh environments such as high temperature, high humidity, and corrosion, the material properties of screws may change, resulting in a reduction in their tensile strength and shear strength, which in turn reduces their torque carrying capacity. In addition, the external force such as vibration and impact will also accelerate the fatigue and wear process of the screw, reducing its fastening effect and service life. Therefore, when selecting and using lengthening screws, the impact of their use environment must be fully considered, and corresponding protective measures must be taken to ensure that their performance is stable and reliable.
### Importance of installation process
The installation process is also one of the important factors determining the torque bearing capacity of the extension screw. The correct installation process includes choosing the right tightening torque, using the right tightening tools, and following the correct tightening sequence. Preload control is one of the key links in the installation process, too small preload may lead to screws not sufficiently tightened and loose; Excessive preloading force may cause the screw to produce too much stress concentration and fracture. Therefore, it is essential to use special tools such as torque wrenches to tighten and operate in strict accordance with the specified preload force. In addition, for the tightening of multiple screws, the method of cross tightening can reduce the stress concentration and loosening caused by improper tightening sequence.
### Solutions and preventive measures
In order to ensure that the extension screws can withstand the expected maximum torque and maintain good tightening, we can take the following solutions and precautions:
1. ** Choose the right fastening method and material ** : Select the right high-strength screws and auxiliary components (such as locking washers, thread locking agents, etc.) according to the use scenario to improve its anti-fatigue and anti-corrosion ability.
2. ** Optimize the installation process ** : Use special tools to tighten the operation, in strict accordance with the prescribed pre-tightening force and tightening sequence; Regular inspection and maintenance of screws in important parts.
3. ** The introduction of anti-loosening technology ** : The use of self-locking screws or vibration isolation measures and other advanced technology to reduce the impact of vibration on screw fastening performance; Apply appropriate amount of thread locking agent to enhance the tightening effect of screws.
4. ** Improve material quality ** : Select high-quality raw materials to manufacture screws, and strictly control the heat treatment process and processing technology to reduce defects and non-standard operations in the manufacturing process.
In summary, the maximum torque that the extension screw can withstand is a complex and changeable problem, which is affected by many factors such as material, specifications, use environment and installation process. Therefore, in the selection and use of extension screws, we must consider these factors and take appropriate measures to ensure that its performance is stable and reliable. Only in this way can we ensure the safe operation and long-term stability of our equipment.
# Lengthening screws # Lengthening bolts # Lengthening outer hex screws # Lengthening inner hex screws # fasteners
