What Is Rivet: Types and Applications

What are rivets?

Rivets are nail shaped objects used to connect two parts (or components) with through holes and caps at one end.

In riveting, the riveted parts are connected by self deformation or interference.

What Is Rivet

Blind rivet

Blind rivets are a kind of rivets used for single-sided riveting, but they must be riveted with special tool pull riveter (manual, electric and pneumatic).

This kind of rivet is especially suitable for riveting occasions where it is inconvenient to use ordinary rivets (riveting must be carried out from both sides).

It is widely used in construction, automobile, ship, aircraft, machinery, electrical appliances, furniture and other products.

Among them, open flat round head blind rivets are the most widely used, countersunk blind rivets are suitable for smooth riveting occasions, and closed blind rivets are suitable for riveting occasions with high load and certain sealing performance.

Blind rivet

Types and uses of rivets

1. Fan rivets are specially designed for manual installation.

They can be pulled in through the holes of panels or chassis.

They are made of elastomer materials, with good toughness, ingenious design and elastic function.

They are not easy to slide out after being pulled in with the corresponding hole diameter.

Fan rivets are mainly used for fixing between fans, heat sinks and chips of electronic computer chassis, with anti vibration and noise reduction.

2. Blind rivets are new riveting fasteners that are very convenient for riveting.

Blind rivets can show their unique advantages in a relatively narrow space or in an environment where there is no riveter or riveter can not be used.

Two or more connected parts can be riveted successfully by knocking the nail core on one side with tools such as hammer.

According to the shape of the rivet cap and brim, the blind rivets can be divided into flat round head blind rivets and countersunk head blind rivets.

3. The types of pull rivets can be roughly divided into open type, closed type, double drum type and single drum type series.

4. Countersunk head blind rivets: riveting of riveted parts with smooth and beautiful surface after riveting.

5. Double drum blind rivets: when riveting, the rivet core pulls the end of the rivet body into a double drum shape, clamps the two structural parts to be riveted, and can reduce the pressure acting on the surface of the structural parts.

It is mainly used for riveting various thin structural parts in vehicle, ship, construction, machinery, electronics and other industries.

6. Brim blind rivets: compared with ordinary blind rivets, the aluminum cap diameter of the rivet is significantly larger.

When riveting with the connector, the rivet has larger contact area and stronger support surface, which can enhance the torque strength and bear higher radial tension.

Applicable industry: it is suitable for fastening soft and fragile surface materials and oversized holes.

It increases the brim diameter and has special protective applications for soft materials.

7. Closed pop rivets: specially designed to cover the mandrel head after riveting. It is very suitable for various applications with waterproof requirements.

It has high shear force, anti vibration and high pressure resistance.

8. All aluminum blind rivets: the rivet body of the rivet also adopts high-quality aluminum wire, which is beautiful and durable after riveting, and will never rust: compared with ordinary blind rivets, the riveting strength of the rivet is lower, which is suitable for connectors with relatively soft materials.

9. Open stainless steel rivet: the rivet is the best choice for high tensile demand and corrosion resistance.

10. Flat head and flat round head rivets: mainly used for riveting of sheet metal or non-metallic materials such as leather, canvas and wood.

11. Semi hollow rivet: mainly used for riveting occasions with small load.

12. Hollow rivet: light weight, weak nail head, used for riveting of non-metallic materials with small load.

What Is Rivet: Types and Applications 1

Nominal diameter D

Nominal

3

32

4

5

6

Max

3.07

3.29

4.09

5.09

6.09

Min

2.93

3.11

3.91

4.91

5.91

dk

Max

6.24

8.29

10.29

12.35

Min

5.76

7.71

9.71

11.65

k

1.4

1.7

2

2.5

d1

1.8

2.18

2.8

3.6

L1 min

26

27

31

Rivet precautions

1. When checking the finished products of blind rivets, it is necessary to check: rivet body diameter, rivet body rod length, rivet body cap thickness and cap diameter, total length of rivet core, exposed size of rivet core, size of rivet cap and outer diameter after assembly can be considered.

In the actual inspection, the weak links of the product can be measured, such as tensile resistance, shear resistance and nail core anti detachment force.

2. The key is to pay attention to the of rivets, the insufficient pull riveting and whether riveting is in place;

Or because the nail core cap is too large, so that the rivet body nozzle cannot be pulled down;

There is also jumping head, that is, the tensile breaking force of the nail core is too low or the fracture size is too small.

3. Rivet material: aluminum, iron, stainless steel, alloy, etc.

4. The total thickness of the workpiece is generally 45% – 65% of the rivet length, preferably not higher than 60%.

In addition, too short working length is also troublesome. It is recommended to take 50% – 60% as the standard under normal circumstances.

If the rivet length is too long, the rivet pier head is too large, and the nail rod is easy to bend;

If the rivet length is too short, the thickness of the pier is insufficient, and the forming of the nail head is incomplete, which affects the strength and tightness.

The rivet length is too long or too short. Only the appropriate length can achieve the best riveting effect.

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