What is ultrasonic plastic welding?
Ultrasonic plastic welding is the joining or reforming of thermoplastics through the use of heat generated from high-frequency mechanical motion. It is accomplished by converting high-frequency electrical energy into high-frequency mechanical motion.
What is the basic principle of ultrasonic welding?
Ultrasonic welding uses ultrasonic energy at high frequencies (20–40 kHz) to produce low amplitude (1–25 μm) mechanical vibrations. The vibrations generate heat at the joint interface of the parts being welded, resulting in melting of the thermoplastic materials and weld formation after cooling.
How does ultrasonic welding machine work?
Ultrasonic welding, or USW, is a welding technique that utilizes mechanical vibrations above the audible range. The process is accomplished by converting high-frequency electrical energy into high mechanical motion. The mechanical motions applied along with force generate frictional heat at the plastic joint area.
What are the applications of ultrasonic welding?
Ultrasonic welding is commonly used to create parts for microcircuits, computer disks, capacitors and flash drives. Automotive industry: In the automotive industry, ultrasonic welding is commonly used in large scale applications. For example, door and instrument panels are typically assembled using ultrasonic welding.
What is plastic welding process?
This plastics welding technique, also known as high-frequency welding or radio-frequency welding, uses electromagnetic field to join two plastic parts. The high-frequency electric fields are used to heat the material and pressure is also added to soften and join the two materials together resulting in a strong bond.
What is plastic welding used for?
Plastic welding is welding for semi-finished plastic materials, and is described in ISO 472 as a process of uniting softened surfaces of materials, generally with the aid of heat (except solvent welding).
What are the types of ultrasonic welding?
Types of Ultrasonic welding: (a) Ultrasonic Plastic welding, (b) Ultrasonic metal welding. The ultrasonic welding (UW) technique is an ultra-fast joining process, and it is used to join thermoplastic composite structures, and provides an excellent bonding strength.
What are the advantages of ultrasonic welding?
Ultrasonic welding offers some key advantages over other forms of welding:
- It saves time. It is much faster than traditional welding methods, as virtually no time is needed for drying or curing.
- It saves production costs.
- It produces a high-quality bond and a clean, tight seal.
What is plastic welding called?
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.
What is and explain plastic welding?
What is meant by plastic welding?
Plastic welding is the process of creating a molecular bond between two compatible thermoplastics. Welding offers superior strength, and reduces cycle times. Plastic welding processes are primarily differentiated by their heating methods.