Welding: An Introduction

Welding is commonly executed to hitch two materials, normally metals. Nonetheless, lately, the process of welding is used for joining plastic and glass items too. Metal welding process is fundamentally totally different from plastic welding or glass welding. Read on for more.

Difference within the Vibrations

In case of plastic welding, longitudinal vibrations are sent to the weld surfaces whereas parallel vibrations are answerable for successful metal welding. Also, in case of metal, friction doesn’t lead to simple melting of the surface. In plastic welding, the material melts on account of frictional action, and that too at a much lower temperature compared to that put in use during the metal joining process.

Welding Tools

For the reason that metal welding trade requires fusing of thicker supplies, the equipment used for the aim are different than these in use for glass or plastic. Though each types of welding instruments are manufactured on the idea of the frequent precept of acoustics, there are some variations of their shapes; which in turn sends out different kinds of vibrations to the weld surfaces.

Main Stages of Plastic Welding:

Plastic welding is primarily completed to create a stronger molecular bond between thermoplastics. The process consists of three foremost 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 within the heating stage for higher fusion.

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

Plastic soldering makes use of different types of processes equivalent to spin, vibration, laser, ultrasonic, etc and each of those processes differ from one another in their particular person methods.

Glass Welding Process

Glass welding is usually executed at the time of producing glassware, establishing neon signs, flash tube and scientific apparatus. Also, bottles and jars require glass welding to affix the different glass molds. In glass welding, the glass is melted right into a thick liquid mass, which in turn is heated under very high temperature. However, the temperature required in glass welding depends on the types of glass involved within the process. The melted glass is heated using a particular type of gas torch.


Whether or not it is about welding metals or glass, the overall process is so simple as heating and joining with using technology. Nevertheless, there exist certain differences, which should be mastered for best results.

Welding is essentially the most commonly used process for becoming a member of two materials and helps many various methods. It is used within the manufacturing of frequent instruments and apparatuses utilized in completely different industries.

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