What is the difference between high-frequency and ultrasonic waves
The difference between ultrasonic waves and high-frequency waves are with a wave, many people think that high-frequency waves are a kind of ultrasonic waves, their difference is only the frequency of the high and low only, in fact, this is a completely wrong understanding, simply put ultrasonic waves are a kind of sound waves, and high-frequency waves are a kind of electromagnetic waves, are not the same wave, is it going to be the same
From the definition of the two, ultrasound is a frequency higher than 20,000 Hz sound waves, it is good direction, penetration ability, easy to obtain a more concentrated acoustic energy, and high frequency refers to the frequency is greater than 100Khz of electromagnetic waves, high frequency is the use of high-frequency electromagnetic fields to make the materials within the molecules of the intense collision with each other and generate high temperatures to achieve the purpose of welding and fusion welding, and ultrasonic is the use of friction to generate heat between the plastic The principle of heat dissipation between the points is not easy to produce a large amount of heat to achieve the purpose of welding and fusion.
High-frequency frequency machine is the use of high-frequency electric field so that the internal molecules of plastics oscillate to produce heat and various types of products fusion, by the high-voltage rectifier self-excited tube oscillation instantly generate electromagnetic field so that the molecules of plastics to produce changes in the role of pneumatic force and molds to achieve the efficacy of the fusion, cut off, sealing, embedding, etc.; the operation of the easy to understand and easy to learn, high efficiency, suitable for large-scale welding of plastic products cut, the process is more Simple, the effect is more perfect. High-frequency welding machine is mainly used for: all kinds of polyvinyl chloride (PVC) based plastic welding, welding, stamping and so on. Blister packaging (including the upper and lower double blister heat sealing cutting edge, blister and cardboard heat sealing cutting edge, etc.), automotive interior parts, cushions, trademarks, stationery, stickers, plastic covers, blowing toys, footwear products, rain sails, umbrellas, raincoats, purses, name brands, waterbeds, sunshade, door panels, a variety of bags, hand-held bags, such as heat sealing processing, a variety of bump switch pattern, the letters of the text of the suppression.
Ultrasonic can be applied to can be used for distance measurement, speed measurement, cleaning, welding, crushing, sterilization, etc., with live this has now developed welding products are ultrasonic plastic welding machine, ultrasonic metal welding machine, ultrasonic cleaning machine and other kinds of welding machine, high-frequency is mainly used in blister packages, automotive upholstery parts, cushions, trademarks, stationery, stickers, plastic covers, blowing toys, footwear products High-frequency welding machine is mainly used in the heat lamination of plastic packaging, automobile interior parts, cushions, trademarks, stationery, stickers, plastic covers, blow-up toys, footwear products, raincoats, rain sails, umbrellas, waterbeds, sunshields, door panels, all kinds of bags, hand-held bags, etc. High-frequency can only weld pure PVC or containing more than 30% PVC soft and hard film, leather or cloth heat sealing, not use ultrasonic welding machine widely, ultrasonic can weld most plastics and a small amount of metal.
Theoretical studies have shown that, under the same conditions of amplitude, the energy of an object vibration is proportional to the frequency of vibration, ultrasonic propagation in the medium, the medium mass vibration of the high frequency, and therefore a lot of energy. In the dry winter in the north of China, if the ultrasonic waves into the water tank, the intense vibration will make the tank of water broken into many small droplets, and then a small fan to the droplets blown into the room, you can increase the indoor air humidity. This is the principle of ultrasonic humidifier. Laryngitis. Diseases such as laryngitis, bronchitis, etc. make it difficult for medicines to reach the affected area. Using the principle of humidifier, the medicine atomized, so that the patient inhaled, can improve the efficacy of treatment. The use of ultrasound's enormous energy can also make the body's stones do violent forced vibration and broken, thus slowing down the pain, to achieve the purpose of healing, which is the application of ultrasound in the medical field.
Ultrasonic metal welding machine is the use of the amount of tens of thousands of times per second of high-frequency vibration waves transmitted to the surface of the two metal workpieces to be welded, and then apply a certain amount of pressure, so that the metal surface friction with each other to form a molecular layer of fusion between the purpose of welding. Can be welded copper, aluminum, tin, nickel, gold, silver, molybdenum, stainless steel and other non-ferrous metal materials, thin plate, rod, wire, sheet, strip and other materials to implement the instantaneous welding, the total thickness of up to 2-4mm. welding cases are lithium batteries, polymer batteries, copper foil and nickel pieces of mutual fusion, aluminum foil and aluminum pieces of mutual fusion. Wire fusion, bias knotting into a line with a number of fusion, wire harness welding. Wire and all kinds of electronic components, contacts, connectors intermelt. Interfusion of large heat sinks, heat exchange fins and honeycomb centers of various home appliances and automotive products. Electronic component leads, relays, electromagnetic switches, fuseless switches and other high-current contacts, the mutual fusion of dissimilar metal sheets. Metal tube sealing, cut off can be water and airtight.
Ultrasonic can also be plastic products welding, without adding any reagents and other auxiliary materials, ultrasonic plastic welding machine is widely used in plastics, electronics, toys, digital and other fields.