How Are Glass and Plastic Welding Completely different From Metal Welding?

Welding: An Introduction

Welding is commonly carried out to join two materials, often metals. However, today, the process of welding is used for becoming a member of plastic and glass items too. Metal welding process is fundamentally completely different from plastic welding or glass welding. Read on for more.

Distinction within the Vibrations

In case of plastic welding, lengthyitudinal vibrations are despatched to the weld surfaces whereas parallel vibrations are liable for successful metal welding. Also, in case of metal, friction does not lead to simple melting of the surface. In plastic welding, the fabric melts due to frictional action, and that too at a much lower temperature compared to that put in use in the course of the metal joining process.

Welding Tools

Because the metal welding industry requires fusing of thicker materials, the apparatus used for the purpose are different than those in use for glass or plastic. Though each types of welding instruments are manufactured on the basis of the widespread principle of acoustics, there are some variations in their shapes; which in turn sends out different kinds of vibrations to the weld surfaces.

Principal Stages of Plastic Welding:

Plastic welding is primarily completed to create a stronger molecular bond between thermoplastics. The process consists of three main steps:

Pressure: Pressure helps in flattening the surfaces of the objects to be welded and must be applied for keeping their totally different parts in proper orientation.

Heating: Intermolecular diffusion is allowed in the heating stage for higher fusion.

Cooling: This stage is necessary for solidifying the newly created molecular bond and leads to proper weld strength.

Plastic soldering makes use of various types of processes reminiscent of spin, vibration, laser, ultrasonic, and so on and each of those processes differ from each other in their particular person methods.

Glass Welding Process

Glass welding is often executed at the time of producing glassware, setting up neon signs, flash tube and scientific apparatus. Additionally, bottles and jars require glass welding to join the different glass molds. In glass welding, the glass is melted into a thick liquid mass, which in turn is heated under very high temperature. Nevertheless, the temperature required in glass welding relies on the types of glass concerned in the process. The melted glass is heated utilizing a particular type of gas torch.


Whether or not it is about welding metals or glass, the general process is so simple as heating and joining with using technology. Nonetheless, there exist certain differences, which have to be mastered for greatest results.

Welding is essentially the most commonly used process for becoming a member of materials and helps many various methods. It’s used within the manufacturing of common instruments and apparatuses used in totally different industries.

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