What to look for when buying rivets

Commonly used rivet machining processes include cold heading and high speed turning, followed by appropriate heat treatment to achieve the relevant hardness requirements, blackening and phosphating of the required parts.

The rivet cold heading process: the cold heading process involves the plastic deformation of metal wire in a mould through the impact of a punch to achieve an overdue shape and size;

Process: wire cutting - cold heading - nailing; this processing method saves wire, but is prone to cracking the head when producing large deformed products that cannot be machined into shape on the rivet;

High speed turning of rivets: after high speed turning of the shape of the turning tool, adjusting the position of the tool and the processing sequence to remove excess material from the wire, the desired shape and size has been achieved.

Advantages of rivets:

1. ease of assembly, with a simple press rivet;

2, high torque resistance;

3. harmless surface treatment, suitable for coated materials;

4、Series of specifications can meet various design requirements.

The following points should be noted when choosing rivets.

1, the strength of the rivet: including tensile strength and shear strength;

2, riveting thickness: measure the thickness of the rivet to be riveted, and then select the rivet according to its riveting range;

3, rivet material: rivet materials usually include aluminium, steel, stainless steel, copper, and of course some materials;

4, rivet drilling diameter: drilling diameter for riveting is very important. If it is too small, the rivet will be very difficult to insert. If the hole is too large, the rivet will not be tight;

5, the shape of the brim: the shape of the rivet brim includes round head, countersunk head and large brim. Round head is commonly used, if the surface needs to be flattened after riveting, use a countersunk head, if the riveted object is soft, choose a large brim is more appropriate.