With the help of pressure, the melt plastic macromolecules spread and closely stick to the plastic connection method. 2. Softness of the heating source 3. Soften through mechanical exercise 4. Sofele through electromagnetic effects Thermal plate welding may be the simplest plastic welding technology, but this method is particularly suitable for this method. The welding of large plastic parts with a large area of welding surface is needed. Generally, the plane electric heating board softes the two plane melting that needs to be welded and quickly removes the electrical board to merge the two planes and force to cool. 2. When the hot air is welded when the hot air flow directly to the seam area, the filling wire of the joint area and the mother material are melted. Welded seams are formed by filling the material with the welding plastic. 3. The two technologies of hot rods and pulse welding are mainly used in welding that connects a plastic film with smaller thickness. And these two methods are similar, both pressing the two films tightly together, and the instantaneous heat produced by hot sticks or nickel chromium is used to complete the welding. 4. According to the movement track, it can be divided into a linear and rotating straight lines to welded in linear welding and welding of plane welding. The rotation can be used for welding of round welding. 5. Ultrasonic welding ultrasonic welding is the thermoplastic plastic plastic plastic that can soften or melt the seam with high -frequency mechanical machinery.
"Welding" is generally used for metal. If plastic should be called "melting" or "bonding". plastic melting can use ultrasonic/heating machine. There are many adhesive methods, and solvents/polymer binders can be available, depending on engineering design requirements.
There are different types of plastic electrodes, and there are professional air hot -melt welding guns. Both are available. If welding a small amount of plastic parts, you can also use a small acetabine welding torch, which is also easy to master.
There are many methods for plastic welding: 1, hot plate welding is the simplest batch production technology for plastic joints. High -temperature hot plate was sandwiched between the surface of the connector until softened. At this time, take out the hot plate, bond the two surfaces under the control pressure, and remain consistent within a certain period of time. Then cool the melting surface to form welding. 2, the principle of thermoplastic plastic friction welding (also known as rotating welding) is the same as that of metal welding. During this welding process, a substrate is fixed, and the other substrate rotates from the perspective of control. When the part is pressed together, the friction heat causes the polymer to melt, and welding is formed after cooling. 3, ultrasonic welding method forms seams through mechanical high -frequency vibration. The pressure of the assembly part is between the oscillating welding head and the fixed welding head, and then shows a right angle with the contact surface, and accepts the ultrasonic vibration of 20 ~ 40kHz. High -frequency stress generates heat in the connector interface to form high -quality welding. 4, vibration welding is also called linear friction welding. The two thermoplastic components are rubbing each other at appropriate pressure, frequency, and amplitude until they produce sufficient heat melting polymers. After the vibration stops, the parts are aligned, and the melting polymer curing to form welding. 5, thermoplastic substrate and thermoplastic strip use heating air (usually air) to heat and melt. 6, plastic laser welding, also known as laser penetration welding. The basic principle is to put plastic workpieces in a fixture, apply sufficient pressure, penetrate the plastic on the laser beam, absorb the laser energy on the plastic surface, and under the pressure of welding pressure Melting plastic, cooling and forming a firm welding seam. each method has advantages and disadvantages, but plastic products can be welded more accurate and more complicated with plastic laser welding machines. The entire welding process adopts non -contact welding method. The plastic laser welding process is more environmentally friendly and safer; laser plastic welding machines are controlled by computer software and more flexible; compared with traditional plastic welding machines, plastic laser welding machines have no vibration during the welding process. Can be used for damaged products (such as electronic sensors)
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