How to Install Gaskets? With Front Sides or Back Sides?
How to Install Gaskets? With Front Sides or Back Sides?
Is there a difference here?
When installing flat washers with nuts, everyone may encounter installation problems on both sides to some extent: smooth surface and rough surface (relative). Which side should be closer to the part for better effect, and what is the big difference?
First, solve one of the problems by using flat pads on both sides. We know that flat pads are mainly made by stamping iron plates, and their shape is usually a flat washer with a hole in the middle. They are installed in the order of one spring pad and one flat pad, with the flat pad adjacent to the machine surface and the spring pad between the flat pad and the nut.
There are two functions.
One is to increase the contact area between the screw and the machine. The second is to eliminate the damage to the machine surface caused by the spring pad when removing screws.
From this, it can be seen that the use of the front and back sides mainly depends on the function that the flat pad needs to achieve.
If it is only used to reduce looseness, you can choose to place the non-smooth surface close to the part. However, if you want to better protect the parts, it is better to choose a smooth surface that is close to the surface of the parts.
You may also want to ask, if both are implemented, or which usage method carries the least risk?
This involves the second question.
What is the big difference between using positive and negative materials? The calculation formula in the "Quality Encyclopedia of Standard Fasteners" published by China Standard Press is: weight per thousand pieces m=0.00785 × {3.1416/4 × washer height × [square of outer diameter - square of inner hole diameter]}. However, due to different standards in various countries and the possibility of information errors, we have temporarily found an American flat cushion standard for everyone. That is to say, when producing flat pads, it is possible to achieve a surface treatment that is as smooth as possible on both sides.
In this way, we can make requests when customizing or purchasing flat pads from factories. For example, if smooth surfaces are required to be close to the surface of parts in industrial production. However, at the same time, it is necessary to reduce part wear, then standard requirements can be implemented, and of course, corresponding purchase price increases are also required.
In fact, in general, the probability of loosening problems occurring in daily life is much lower than the frequent damage to the surface of parts due to connections.
As most people tell you, it is feasible to turn the rough surface away from the nut and the smooth surface close to the surface of the part.
In addition to the metal flat pads mentioned above, non-metallic flexible pads are also very common in processing and production, such as rubber gaskets, graphite gaskets, asbestos gaskets, asbestos free gaskets, silicone gaskets, and so on.
The sealing accuracy of these gaskets also needs to be given special attention. The prerequisite for these implementations is the accuracy of cutting the sealing gasket.
Taking flange gaskets as an example
Flange sealing mainly relies on the pre-tightening force of connecting bolts, and achieves sufficient sealing pressure through gaskets to prevent the leakage of the sealed pressure fluid medium. There are many reasons for its leakage, such as insufficient clamping force of the sealing gasket, roughness of the joint surface not meeting the requirements, gasket deformation, and mechanical vibration, which can cause the sealing gasket and flange joint surface to not fit tightly and leak. How can we increase the sealing performance of gaskets and improve the efficient and high-quality processing of gasket factories?
We recommend the intelligent vibration knife cutting equipment here, which utilizes blade cutting, fully intelligent cutting, and computer data import to significantly reduce cutting errors and achieve pain points in the cutting process of sealing gaskets.
1. There are more and more non-standard orders with irregular shapes, and traditional craftsmanship cannot process them.
2. Punch processing has a taper, and the technical requirements cannot be met.
3. Special materials have high hardness and cannot be processed manually by punching machines.
4. The utilization rate of punch press processing is low, and the scrap rate is high.
5. Punch processing has a high risk factor and multiple types of molds.
6. Difficulty in recruiting and managing professional workers.
7. Edge cutting has burrs, and secondary polishing is time-consuming and costly.
8. The demand for product accuracy is increasing, and traditional processes cannot achieve it.
The above common production drawbacks can be solved. We have seen too many big problems caused by small gaskets in the future. We hope there will be no more misfortunes caused by a few threads and a few cents.
Is there a difference here?
When installing flat washers with nuts, everyone may encounter installation problems on both sides to some extent: smooth surface and rough surface (relative). Which side should be closer to the part for better effect, and what is the big difference?
First, solve one of the problems by using flat pads on both sides. We know that flat pads are mainly made by stamping iron plates, and their shape is usually a flat washer with a hole in the middle. They are installed in the order of one spring pad and one flat pad, with the flat pad adjacent to the machine surface and the spring pad between the flat pad and the nut.
There are two functions.
One is to increase the contact area between the screw and the machine. The second is to eliminate the damage to the machine surface caused by the spring pad when removing screws.
From this, it can be seen that the use of the front and back sides mainly depends on the function that the flat pad needs to achieve.
If it is only used to reduce looseness, you can choose to place the non-smooth surface close to the part. However, if you want to better protect the parts, it is better to choose a smooth surface that is close to the surface of the parts.
You may also want to ask, if both are implemented, or which usage method carries the least risk?
This involves the second question.
What is the big difference between using positive and negative materials? The calculation formula in the "Quality Encyclopedia of Standard Fasteners" published by China Standard Press is: weight per thousand pieces m=0.00785 × {3.1416/4 × washer height × [square of outer diameter - square of inner hole diameter]}. However, due to different standards in various countries and the possibility of information errors, we have temporarily found an American flat cushion standard for everyone. That is to say, when producing flat pads, it is possible to achieve a surface treatment that is as smooth as possible on both sides.
In this way, we can make requests when customizing or purchasing flat pads from factories. For example, if smooth surfaces are required to be close to the surface of parts in industrial production. However, at the same time, it is necessary to reduce part wear, then standard requirements can be implemented, and of course, corresponding purchase price increases are also required.
In fact, in general, the probability of loosening problems occurring in daily life is much lower than the frequent damage to the surface of parts due to connections.
As most people tell you, it is feasible to turn the rough surface away from the nut and the smooth surface close to the surface of the part.
In addition to the metal flat pads mentioned above, non-metallic flexible pads are also very common in processing and production, such as rubber gaskets, graphite gaskets, asbestos gaskets, asbestos free gaskets, silicone gaskets, and so on.
The sealing accuracy of these gaskets also needs to be given special attention. The prerequisite for these implementations is the accuracy of cutting the sealing gasket.
Taking flange gaskets as an example
Flange sealing mainly relies on the pre-tightening force of connecting bolts, and achieves sufficient sealing pressure through gaskets to prevent the leakage of the sealed pressure fluid medium. There are many reasons for its leakage, such as insufficient clamping force of the sealing gasket, roughness of the joint surface not meeting the requirements, gasket deformation, and mechanical vibration, which can cause the sealing gasket and flange joint surface to not fit tightly and leak. How can we increase the sealing performance of gaskets and improve the efficient and high-quality processing of gasket factories?
We recommend the intelligent vibration knife cutting equipment here, which utilizes blade cutting, fully intelligent cutting, and computer data import to significantly reduce cutting errors and achieve pain points in the cutting process of sealing gaskets.
1. There are more and more non-standard orders with irregular shapes, and traditional craftsmanship cannot process them.
2. Punch processing has a taper, and the technical requirements cannot be met.
3. Special materials have high hardness and cannot be processed manually by punching machines.
4. The utilization rate of punch press processing is low, and the scrap rate is high.
5. Punch processing has a high risk factor and multiple types of molds.
6. Difficulty in recruiting and managing professional workers.
7. Edge cutting has burrs, and secondary polishing is time-consuming and costly.
8. The demand for product accuracy is increasing, and traditional processes cannot achieve it.
The above common production drawbacks can be solved. We have seen too many big problems caused by small gaskets in the future. We hope there will be no more misfortunes caused by a few threads and a few cents.
