Various Connection Methods and Selection Criteria for Sheet Metal Fabrication Components
Release time:
2025-11-25
The essential step in forming sheet-metal fabricated parts is joining—connecting various components into a unified structure according to a specific structural configuration and their corresponding positions. Typically, mechanical joining methods such as riveting, threaded connections, and expansion joints are employed, or alternatively, welding and adhesive bonding techniques may be used. Welding is an irreversible connection method, whereas all other joining methods are reversible.
The essential step in forming sheet-metal fabricated parts is joining—connecting various components into a unified structure according to a specific structural configuration and their corresponding positions. Typically, mechanical joining methods such as riveting, threaded connections, and expansion joints are employed, or alternatively, welding and adhesive bonding techniques may be used. Welding is an irreversible connection method, whereas all other joining methods are reversible.
The following are the riveting connection methods and selection criteria for sheet metal structures:
Riveted joint types: lap joint, butt joint, corner joint, plate-type riveting, and flared-hole riveting;
a. Lap Joint Method, Characteristics, and Applications: A lap joint involves overlapping one sheet or structural steel member onto another sheet and then riveting them together. This method is suitable for load-bearing structures and is commonly employed in:
b. Joining Method, Characteristics, and Applications: Place the joints of two steel plates or structural sections on the same plane, and use cover plates as connectors to rivet the joints together. This method is suitable for load-bearing structures.
And use solid rivets with round-heads;
c. Corner Joint Method, Characteristics, and Applications: This method involves joining two pieces of material at a right angle or at a specified angle. At the joint, angle steel is used as the connecting element; there are two types—single-sided and double-sided.
Suitable for load-bearing structures and uses solid rivets with round heads;
d. Plate-type riveting method, characteristics, and applications: First, the end faces of the plates are overlapped and assembled with one end of channel steel or formed components, then joined together using rivets.
e. Flanging Riveting Method, Its Characteristics, and Applications: A sheet with pre-punched holes is overlapped onto another sheet that has been punched and whose hole edges have been flanged; the hole openings are then further flanged and tightly pressed.
And rivets are used for riveting on the side of the holes, typically in sealed structures, with flat-round-head semi-hollow rivets being employed.
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