During the use of bolts, flat pads and elastic pads play an essential role, so how should we choose? Let’s talk about it today.
Flat carpet
How to choose a flat carpet?
The flat pads are part that prevents bolts and nuts from locking. Flat pads are used when ties are used. The flat pads are a type of flat washer, which mainly plays a role in increasing the contact area between the screws and certain large equipment and the tightening. Stored on flat pads.
1. In the severe environment, it should be said that the flat cushion should be sealed, so that the leak is not easy to occur during working hours at a certain temperature and pressure.
2. When the flat seal is connected to the contact surface, it is better to ensure the sealing, just as the effect is fair.
3. When the seal receives pressure, under the influence of temperature, wrinkle resistance should be better, otherwise the screw will be damaged and hard gas leaks will occur.
4. Do not make yourself infected when using flat pads.
5. Use a flat cushion to remove it well.
6. Do not forget to ensure normal use at relative temperature when using flat stamps.
In order to better use flat pads, when choosing flat pads, you should try to choose flat pads with anti -ist and anti-corrosion materials. Flat pads.
When used with bolts and nuts, the criteria for selecting flat pads:
1. When you choose the joint material, you need to pay attention to electrochemical corrosion problems when different metals are in contact. The flat cushion material is generally the same as the material of the connection part, generally steel, alloy steel, stainless steel, aluminum alloy, etc. When there are conductive requirements, copper and copper alloys can be used.
2. The interior diameter of the flat cushion is selected according to the largest value of the diameter of the thread or the screw. larger value.
3. When selecting the W Werlets under the bolt or the head -on, to avoid interference with the rounded corners under the head and the washer, a flat washer with interior chamfered holes can be selected.
4. The steel washer should be used for important bolts with larger diameters or in order to increase anti-extrusion capacity. The connection of the tension bolts or composite shear bolts must be in steel washing machine.
5. Special seals are used in special requirements, such as copper joints which require conductivity;
The function of flat pads:
1. Increase the contact area between the screw and the machine.
2. Eliminate the damage to the surface of the machine by the spring cushion when the screws unloading. When it is used to be used: a spring cushion with a flat cushion, the flat cushion is next to the machine surface and the spring cushion is between the flat cushion and the nut. The flat cushion should increase the screw constraint surface. In order to prevent the screws from loosening, the spring cushion plays a certain amount of stamp and protection when subjected to stress. Although flat pads can be used as sacrificial pads.
3. But most of the time, it is used as an additional cushion or flat press cushion.
advantage:
① By increasing the contact zone, the parts can be protected from damage;
② By increasing the contact zone, reduce the pressure between the nut and the equipment, thus playing a protective role.
default:
① The flat washer cannot act as a shock resistant function;
② The flat washer also does not have an anti-compliance effect.
Aluminum paper cushion
The function of the ball pavement
1. The function of the spring washer is to tighten the nut, and the spring washer gives the nut an elastic force to tighten the nut so that it is not easy to fall. The basic function of the spring is to tighten the nut and give the nut a force to increase the friction between the nut and the bolt.
2. Generally, flat pads are not used when using elastic pads (except when protecting the surface of the fasteners and the installation surface, flat pads and elastic pads are considered).
3. The flat pads are generally used in connection parts with a soft texture and a fragile texture.
advantage:
①The the spring washer has a good anti-localization effect;
②The spring washer has good shock resistance;
Electricity manufacturing cost;
It is very practical to install.
default:
The windshield washing machine is greatly affected by the material and the process.
When to use flat pads, when to use ammunition pads?
1. Generally, if the load is relatively small and does not resist the load of vibration, you can only use a flat cushion.
2. When the load is relatively large and the vibration load is subject to a combination of flat pads and elastic pads should be used.
3. The spring washer is essentially not used alone, but is used in combination.
In real use, due to the different focusing of the flat washer and the spring washer, the two are used together on several occasions, which simultaneously protect the parts, prevents the nut from releasing and reduces vibrations.
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