What is riveting?
Riveting, i.e. rivet connection, is a mechanical term. It is a method of connecting multiple parts by using axial force to thicken the nail rod pier in the rivet hole of the part and form a nail head.
Riveting is divided into:
1. Movable riveting: the joint parts can rotate with each other. Not a rigid connection. Such as scissors and pliers.
2. Fixed riveting: the joints cannot move with each other. This is a rigid connection. Such as: angle ruler, nameplate on three ring lock, bridge building.
3. Sealing riveting: the riveting joint shall be tight without leakage of gas and liquid. This is a rigid connection.
What is welding?
Welding, also known as fusion welding, is a manufacturing process and technology for joining metals or other thermoplastic materials such as plastics by heating, high temperature or high pressure.
There are many energy sources in modern welding, including gas flame, arc, laser, electron beam, friction and ultrasonic wave.
In addition to being used in the factory, welding can also be carried out in a variety of environments, such as the field, underwater and space.
No matter where welding is, it may bring danger to the operator, so appropriate protective measures must be taken when welding.
Possible injuries to human body caused by welding include burns, electric shock, visual damage, inhalation of toxic gas, excessive ultraviolet radiation, etc.
What are the advantages and disadvantages of welding compared with riveting?
Advantages of welding over riveting
Compared with riveting, welding has the following advantages:
1. The connection strength is high and the sealing property is good. Because the metallurgical bonding is realized, the strength is ideal.
2. The weight of the joint is small. Because the welding can basically adopt the form of butt joint, the structure is simple.
Unlike riveting, which requires base metal lapping, it also requires a large number of rivets to fix.
3. In general, the connection cost is relatively low, which can basically achieve the purpose of saving time and effort.
4. It is easy to use and basically applicable to various connection forms.
Disadvantages of welding compared with riveting
The welding deformation is relatively large, and there is no advantage in connecting thin parts.
Advantages of riveting
The connection deformation is small, the requirements for the connection environment are low, and the construction can be carried out with wind, water, oil, etc., especially suitable for thin piece connection.
Disadvantages of riveting
The connection joint has low strength, poor sealing, low efficiency and heavy joint.
What is the difference between riveting and welding?
Riveting is a method of connecting multiple parts by using axial force to thicken the nail rod pier in the rivet hole of the part and form a nail head.
Generally speaking, riveting refers to the method of connecting two plates or objects by punching holes in the parts of two plates with small thickness, then putting the rivets in and riveting them with a rivet gun.
The difference between riveting and welding is:
1. The weight of welded products is lighter than that of riveted parts, which can reduce the dead weight and save energy for transportation vehicles.
2. According to the characteristics of its process, welding can be divided into three categories: fusion welding, pressure welding and brazing.
Riveting can be divided into three types: movable riveting, fixed riveting and sealing riveting.
3. The process is different:
The manifestations of metal mainly include welding crack, air hole, undercut, incomplete penetration, incomplete fusion, slag inclusion, weld bead, collapse, pit, burn through, inclusion, etc.
The riveting process is drilling, dimpling, deburring, inserting rivets, jacking the rivets with the top mold (top handle), and riveting with a rotary riveting machine (or manual pier tightening, pier thickness, riveting and cover shape).