![]() ![]() Load carrying capacity of the parent components before and after welding remains more or less same.ĭue to presence of holes on the parent components, effective cross-sectional area reduces, and thus load carrying capacity also degrades after riveting. Riveting require a number of through holes in specific locations on the parent components for the passage of rivets. No hole is required to drill on the parent components in order to join them by welding. Both can provide significantly strong and sound joint.ĭifferences between weld joint and rivet joint Weld Joint.Both can be applied for joining of two or more components together.On the contrary, fastening, cotter joints, press fit, etc. Apart from welding and riveting, coupling, adhesive joining, etc. Both are permanent joints and thus welded or riveted components cannot be disassembled without breaking them.This is unlike the adhesive joining technique where chemical reaction takes place. Both welding and riveting are mechanical joining processes as no chemical reaction occurs during joining.Similarities between weld joint and rivet joint Various similarities and differences between weld joint and rivet joint are discussed in the following sections. Unlike welding that gives a continuous joint, riveting provides an intermittent joint and thus it is associated with the risk of leakage, especially at high pressure fluid applications. ![]() However, due to the presence of holes in the components (this reduces the effective cross-sectional area), the load carrying capacity of the assembled structure reduces significantly. In riveting, two or more components are held together by means of tensile stress developed within the rivets. Sometimes rivet shank is heated to an elevated temperature prior to upsetting in order to reduce upsetting pressure requirement. ![]() The protruded end of the rivet shank is hammered (upsetting) to make another closing end opposite to the rivet head. Rivets of specific dimensions are then inserted within such holes. Prior to riveting, arrays of through holes are first drilled on the components (and also in strap plates, if used). Moreover, it is one continuous type joint and thus offers a leak-proof joining.Ī rivet joint is also one type of permanent joint however, it mandatorily requires a series of holes on the components. Strength of the weld joint is very high as it does not require any holes to be drilled on the component. Welding can be used to join metals, ceramics and polymers in several fashions like lap joint, butt joint, T-joint, etc. There exists a wide variety of welding processes that can join various materials in innumerable ways. By definition, welding is one type of joining process where two or more materials can be joined permanently with or without the application of external heat, pressure and additional material. Welded joint and riveted joint are two commonly used permanent joining processes however, now-a-days riveted joints are mostly superseded by various advanced welding processes. Although a permanent joint does not allow disassembly of parts without rupturing them, it has immense demand in assembly as it can provide a strong, leak-proof and inherently anti-loose joint. In the factory almost replaced by welding, in the site almost replaced by high-strength bolted connections.Joining is a part and parcel in manufacturing as it is used to assemble two or more solid components either permanently or temporarily. It is currently used only for large span bolted ball space frame steel structures that are subjected to large dynamic loads. However, riveted joints are more labor-intensive and have more consumables and complex construction. The toughness and plasticity of riveted connections are better. The rivet cools and shrinks after riveting, creating a clamping force on the connected plate bundle, which facilitates force transfer. The rivets used in the steel structure space frame components are made of riveted steel with good top forging performance, riveted connection, first made in the connected components than the nail diameter 1.0 ~ 1.5mm hole. Then one end of the rivet with a semi-circular nail head is heated until the rivet is cherry red when it is plugged into the hole, and then riveted with a rivet gun or riveting machine, so that the rivet fills the nail hole, and hit into another rivet head.
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