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Hot gas welding, also known as hot air welding, is a plastic welding technique using heat. A specially designed heat gun, called a hot air welder, produces a jet of hot air that softens both the parts to be joined and a plastic filler rod, all of which must be of the same or a very similar plastic. (Welding PVC to acrylic is an exception to ...
The automotive industry makes large scale use of implant induction welding for the manufacture of large plastic items such as bumpers, plastic body panels, and fuel tanks. [7] Manufacturing costs of components with complex geometries are brought down by manufacturing the parts in separate pieces, to be assembled later using induction welding. [8]
Radio-frequency welding, also known as dielectric welding and high-frequency welding, is a plastic welding process that utilizes high-frequency electric fields to induce heating and melting of thermoplastic base materials. [1] The electric field is applied by a pair of electrodes after the parts being joined are clamped together.
The heat generated during welding thermoplastic composite, induces residual stresses in the joint. These stresses can greatly reduce the strength and performance of the part. Upon cooling from welding the matrix and fibers will have different coefficients of thermal expansion, which introduces the residual stress.
Solvent bonding differs from other plastic welding processes in that heating energy is generated by the chemical reaction between the solvent and thermoplastic, and cooling occurs during evaporation of the solvent. [5] Solvent bonding can be performed using a liquid or gaseous solvent.
When simulation is undertaken in the design phase of a project, in advance of the tool being manufactured, it can help to identify the problems discussed above and allow the designer to iteratively modify and re-simulate the design to make improvements. Use of simulation in the design phase can help to reduce problems with the physical mould ...
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