Will the nut be loose if it is not tightly aligned?

Yes. After a long time, you will make mistakes.

The reason why the screw cannot be tightened is that the internal stroke of the screw is cracked due to excessive force, resulting in potential safety hazards.

The screw will not loosen after being tightened, but it is often due to excessive force, which exceeds the design stress of the screw, resulting in internal cracks due to excessive tension and force of the fastening steel wire. If used for a long time or suddenly under strong force, the screw may break.

The reason why the screws can not be tightened too tightly

Yes: Excessive force leads to cracks in the inside of the snail wire, resulting in the appearance of hidden dangers.

The screws are tightened tightly and will not loosen, but often due to excessive force, the screw design stress will be elongated, and the internal cracks caused by excessive force on the thread may cause the screw to break due to excessive force.

There are two purposes for screw connection, one is for sealing, and there is a gasket between the two objects to play a sealing role; The other is simply for connecting two or more objects.

In the first kind of sealing, the screw tightening force compresses the gasket, and the gasket is compacted and produces micro-deformation, so that the micro-gap formed by the mechanical processing on the surface of the connected object is fully filled, so as to achieve the sealing effect. If the tightening pressure is too large, the gasket will be crushed or extruded, and the sealing effect will not be achieved.

In the second kind of connection, because the screw itself has a certain material stiffness, through the close contact of the thread, it is like ten fingers interlocking, and the connection is firm. However, if it is tightened too much, on the one hand, the buckles will squeeze each other and cause deformation and destroy the threads, and on the other hand, the stiffness of the screws themselves will not be able to withstand and produce yield deformation, and even fracture.

Therefore, when screwing, the above tightness is the principle, not too forceful!

The normal screw is a left-handed threaded tooth, loose on the left and tight on the right, loose counterclockwise, and tightened in a clockwise direction.

Screws are tools that use the physics and mathematics of the bevel, circular rotation, and friction of an object to gradually tighten the mechanical parts of the object. Screws are a generic term for fasteners, everyday colloquialism.

Screws are indispensable industrial necessities in daily life: such as very small screws used in cameras, glasses, clocks, electronics, etc.; general screws for televisions, electrical products, musical instruments, furniture, etc.; As for engineering, construction, and bridges, large screws and nuts are used; Transportation equipment, airplanes, trains, automobiles, etc., are used with both large and small screws.

Screws that are tightened too tightly or loosely can cause screws to break, depending on several factors:

1.Material: The material of the screw affects how easy it is to break. If the screw is made of a poorer quality material, it is more likely to break if it is tightened too tightly or loosely tightened.

2.The right torque: Each type of screw has different torque requirements, and if the wrong torque is used, it can cause the screw to be too tight or too loose, which in turn can cause cracking.

3.Use of tools: If you use improper tools, such as using too much force or at an inappropriate angle to tighten the screw, it can also cause the screw to break.

4.Pre-treatment steps: Threads can also break if they are not properly cleaned and lubricated, or if they are not properly inserted into the screw holes.

In summary, it is possible to cause screws to break if they are tightened too tightly or loosely, but the best way to avoid screw breakage is to use the correct torque and carry out the corresponding pretreatment steps.

If the screw is tightened too tightly, it will cause the thread to be stretched and deformed by excessive pressure, which may cause the thread to break when subjected to heavy pressure or vibration. In addition, tightening too tightly can lead to deformation of the screw head or wear of the threads.

Similarly, if the screws are tightened too loosely, there is a chance that something may be wrong. If the screws are not sufficiently tightened, the connection will be unstable and easy to loosen, which will then affect the working effect of the equipment.

The correct way is to choose the appropriate tightening strength of the screws according to your needs. As a general rule, screws should be tightened with a wrench or torque wrench with the appropriate strength to ensure that each screw is properly tightened, ensuring that it is stable and reliable, and that it does not break due to overtightening.

The general screw is tight clockwise, and the opposite is loose. A very small part is the opposite.

The screw is a tool that uses the physical and mathematical principles of the inclined plane of the object, the circular rotation and the frictional force to tighten the utensils and parts step by step. Screws are a generic term for fasteners, everyday colloquialism. Screws are an indispensable industrial necessity in daily life

Such as very small screws used in cameras, glasses, clocks, electronics, etc.; general screws for televisions, electrical products, musical instruments, furniture, etc.; As for engineering, construction, and bridges, large screws and nuts are used; Transportation equipment, airplanes, trains, automobiles, etc., are used with both large and small screws. Screws have an important role in industry, and as long as there is industry on the earth, the function of screws will always be important. The screw is a common invention in people's production and life for thousands of years, and it is the first major invention of mankind according to the application field.

Most of the commonly used screws are right-handed, that is, clockwise rotation is tight, and counterclockwise rotation is loose. If the left-handed thread is reversed.

Generally, the right-hand is tight, the left-hand is loose, and the reverse buckle bolt is just the opposite.

Tightening to the right is tight, and tightening to the left is loose.

Normally, it is tight in the clockwise direction and loose in the counterclockwise direction.

There are four ways to prevent loosening of threaded fasteners. The first is friction anti-loosening. This is one of the most widely used anti-loosening methods, which generates a positive pressure between the thread pairs that does not change with the external force, so as to generate a frictional force that can prevent the relative rotation of the thread pairs.

This positive pressure can be achieved by pressing the threaded pair axially or simultaneously in both directions. Such as the use of elastic washers, double nuts, self-locking nuts and nylon insert lock nuts. This anti-loosening method is more convenient for the disassembly of the nut, but in the case of impact, vibration and variable load, the bolt will cause the preload to decrease due to relaxation at the beginning, and with the increase of the number of vibrations, the loss of preload will increase slowly, which will eventually lead to the loosening of the nut and the failure of the threaded connection.

The second way is mechanical anti-loosening. It is to directly limit the relative rotation of the threaded pair with a stopper. Such as the use of cotter pins, tandem steel wires and stop washers, etc.

This method makes it inconvenient to disassemble. The third way is riveting and anti-loosening. After tightening, punching point, welding, bonding and other methods are used to make the threaded pair lose the characteristics of the moving pair and become an inseparable connection.

The disadvantage of this method is that the bolt rod can only be used once, and it is very difficult to disassemble, and the bolt pair must be destroyed before it can be removed. The fourth way is structural anti-loosening. It is the use of the thread pair itself structure, that is, the down's thread anti-loosening method.

The first three types of anti-loosening methods mainly rely on the force of a third party to prevent loosening, mainly referring to friction. The structural anti-loosening does not rely on the force of a third party, but only on its own structure. The structural anti-loosening method is the Down's thread anti-loosening method, which is also the most advanced and effective anti-loosening method at present, but it is not known to most people.

There are several solutions to prevent the nut from loosening, and what are they? Today is a long time to see.

A large hydropower station in China relies on a loan from the World Bank to introduce foreign generator sets, of which one group is 100% imported, one group is 90%, and one group is 80%, and then it is localized. After all the units are installed in place, as soon as they are put into operation, the three units with a high degree of localization are all leaking, and then they are stopped and started maintenance.

One stop is 1 month. And the conclusion of the overhaul made everyone cry and laugh, no one dared to believe that the problem was caused by the screws were not tightened - some did not have a mat, and some did not have screws at all!

These units are produced by large state enterprises, since your country has the ability to produce large units," foreign experts are very puzzled by this. But the root of the problem is that in many people's subconscious, whether the screws are tight, whether they want a mat or not, or even whether they want screws or not is irrelevant to him personally.

Actually, this situation is not accidental. In many enterprises, many employees often have the mentality of getting by and dealing with things sloppily, and they will feel dissatisfied with the requirements of their bosses or customers, even if they are reasonable. Knowing that there is room for improvement in the development of the enterprise, it will not produce the will to improve, but will force others to accept these imperfections that can be improved.

Because in their eyes, they don't take some inconspicuous mistakes seriously, or don't think that the outcome of the matter has anything to do with them.