page_title: Implant induction welding of thermoplastics
section_title: Welding Steps
hierarchical_section_title: Implant induction welding of thermoplastics / Welding Process / Welding Steps
caption_attribution_description: English: Image shows before, during, and after steps for the welding of an implant induction joint.
context_page_description: Implant induction welding is a joining method used in plastic manufacturing. The welding process uses an induction coil to excite and heat electromagnetically susceptible material at the joint interface and melt the thermoplastic. The susceptible material can be contained in a gasket placed between the welding surface, or within the actual components of a composite material. Its usage is common for large, unusually shaped, or delicate parts that would be difficult to weld through other methods.
context_section_description: An implant rich gasket is placed at the surface to be welded. Pressure is applied to the joint to force out air cavities and ensure a sound bond. An electromagnetic field is applied by the induction coil to heat the implants, and pressure is applied to the joint. Heat conducts into the surrounding thermoplastic, which melts the gasket and creates a melt layer at the joint surfaces. The applied pressure flows the molten thermoplastic and fills the joint.  When sufficient bonding has been achieved, the induction coil is turned off and the joint is cooled under pressure. For large items with long joints, the joint can be welded continuously by scanning the active coil along the length of the interface.
caption: Steps of implant induction welding in a tongue in groove joint.
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