Analysis of crimping and welding technology In daily wiring, when copper wires enter and exit distribution boxes and electrical cabinets, terminal heads are required to connect with the cabinets. There are usually two connection methods: pressed copper terminals and soldered copper terminals. Welding, also known as welding, welding, is a manufacturing process and technology for joining metals or other thermoplastic materials such as plastics by heating, high temperature or high pressure.
Welding is a process in which two or more of the same or dissimilar materials are connected into one through the bonding and diffusion between atoms or molecules. Heat and pressure. The ways to achieve welding are fusion welding, pressure welding and brazing. Crimping, an emerging technology that replaces soldering technology, provides low-cost, high-quality connections between terminals and wires. It is a crimping system that uses manual crimping tools or automatic crimping tools for connection operations. The three key elements of the crimping process are terminals, wires and equipment. China DIP Switch The difference between soldered copper terminals and pressed copper terminals is that soldering terminals use solder paste and solder to weld copper terminals and wire ends.
The earlier welding process used copper powder and copper electrodes to weld copper terminals. Soldered with wire ends. Crimp terminals are press-fit connections to terminals using special tools. Generally speaking, the cost of crimping is slightly higher than that of welding, the crimping efficiency is high, and labor is saved, but the cost of materials and equipment will be higher; welding has one more process, which saves materials, but can be combined into complex parts. The distinction of welding and crimping terminals is based on the material and form of the terminals. Aluminum terminals are usually crimped, and copper terminals have openings and peep holes. Generally, open terminals are welded, and peep holes are crimped.
At present, most of the copper terminals are used, and welding is only used when there are special requirements and special environmental locations. Welding pressure is generally used on multi-strand flexible wires. The field is generally crimped, and the rated terminal can be crimped. Good crimping should realize that the metal tube tightly wraps the conductor, the cable insulation completely penetrates into the support part of the insulation tube, the crimp shape is symmetrical after crimping (pin terminal), the insulation tube is not damaged, and the upper and lower ends of the conductor riveting area can be See flare (ring terminal).