China fasteners failure Engineers sometimes face th […]
China fasteners failure
Engineers sometimes face the problem of failure of China fasteners. Taking precautions to prevent this from happening is a wise decision for those dealing with projects involving fasteners. It is not easy to determine whether China fasteners can withstand the pressure exerted on them, but certain factors must be considered before the application begins. It should be noted that the strength and safety of China fasteners connection depend to a large extent on the function of China fasteners connection.
Although far from a common phenomenon, failures of China fasteners do occur. Let's explore the scope of the problem:
China fasteners are too strong
Overstress may be the most common cause of failure of China fasteners and the easiest to determine. The lifespan of China fasteners at full load depends to a large extent on that they can withstand proper pressure without having to withstand excessive pressure. The stress on China fasteners mainly has the following three forms:
Internal stress (also known as "pre-tightening force") to ensure that China fasteners connections remain in place
The external force of the joint material (also called "service load").
The static stress (usually referred to as "tensile load") on both ends of China fasteners. Excessive stretching on China fasteners will cause China fasteners to break. To protect your project from this situation, you need to ensure that China fasteners are not turned over or tightened more frequently than necessary. The tensile force mustn't exceed the tensile strength of China fasteners.
China fasteners fatigue
China fasteners rarely last a lifetime, and they can easily fail due to fatigue. The efficiency of China fasteners decreases with long-term use. As in the case of excessive stress, the applied internal force and external force are the factors that determine the failure or strength of China fasteners-they can be roughly estimated based on the number of preload cycles that China fasteners bear.
China fasteners need to be replaced every few years, mainly due to fatigue. This is especially important when you are dealing with projects with often high-stress levels.
China fasteners corrosion
Since China fasteners are exposed to incompatible substances, such as oxygen, metal products, and even natural mixed chemicals, they are susceptible to the risk of corrosion. China fasteners used to fix auto parts are at risk of exposure to liquids and engine leakage, causing them to deteriorate over time. Corrosion also occurs in structural, construction, and mechanical applications.
Pre-applications designed for specific types of fasteners should be used to protect your application from corrosion. This is a fairly simple and economical method, but also very efficient.
China fasteners thread problem
With the tightening of China fasteners, when two threads are paired, a certain amount of shear stress will be added to the threaded part of China fasteners. Thread stripping is always a risk because excessive stress can cause section shear. To avoid this phenomenon causing joint failure, the possibility and scope of damage should be fully evaluated before using China fasteners, and measures should be taken to ensure that the threads are used accordingly.
In some cases, the design of China fasteners has not considered the possibility of force acting on China fasteners; that is, the calculation of the force acting on China fasteners is incorrect. For example, if a China fastener can withstand 1 ton of force, but it is designed in such a way that 1.5 tons act on the fastener, then the possibility of China fasteners failure is almost certain. Therefore, the design of fasteners must consider the size of the force acting on China fasteners.
Exposure to hydrogen
China fasteners metals will become brittle due to exposure to hydrogen atoms-this is an insurmountable challenge. However, some precautions can be taken. Excessive stress may be a link in the chain, which will eventually lead to hydrogen embrittlement, thereby forming blisters on the fabric of China fasteners. Therefore, you need to protect China fasteners from excessive stress. If you do not pay attention to this aspect, the degradation rate of China fasteners will be much faster than suggested by its estimated service life value.
Fasteners should be replaced immediately when subjected to excessive stress, but there is a more effective alternative: make sure that the air that China fasteners are exposed to contains free anode chemicals and solvents that can cause embrittlement problems.
Measures that can be taken to prevent the failure of China fasteners
Evaluate the design of the component or structure to be used, to accurately calculate the amount of force that will act on China fasteners.
Evaluate the environment in which China fasteners will be used and apply the correct coating to avoid corrosion.
Ensure proper heat treatment of China fasteners.
The coating of fasteners should be carefully designed to avoid hydrogen embrittlement.
Designers should choose the correct thread design for the project; choosing metric coarse threaded fasteners is preferable to fine threaded fasteners because the possibility of thread damage is much smaller.