Copper is one of the earliest metals used by mankind, with many excellent characteristics and functions: good thermal and electrical conductivity, excellent plasticity, easy to hot and cold pressure processing and so on. At present, the domestic industrial consumption of non-ferrous metals, copper ranked second, second only to aluminum, in the construction industry, electrical, machinery manufacturing and other industries have a wide range of applications.
Market conventional copper welding is mainly through the reduction of laser wavelength, improve the material absorption rate to optimize the welding quality, such as the use of blue light, infrared blue light composite, green light and other lasers. However, these lasers and conventional infrared wavelength lasers compared to the existence of short life, high price and other issues.
In this regard, the laser market has introduced laser welding equipment using "infrared continuous fiber laser", which can be freely edited to achieve any form of spot, and at the same time, combined with the welding control system to flexibly and independently control the luminous power of the pixel light spot, frequency and ratio, which can be customized for the welding of copper and other highly anticorrosive materials to meet the needs of high-quality copper welding. It can be customized to meet the needs of high quality copper welding.
Application Case 1: Copper Coil Welding
In the past, the coil processing is generally used in the form of tin welding and hydraulic pressure, but these methods are not high solidity, conductivity is not strong, can not meet the needs of high-standard industry. And laser welding with its high efficiency and no consumables, strong conductivity and other advantages, to become a better choice of processing methods.
Welding skills: 1. Welding head angle tilt to prevent long-term back reflection damage to the laser. 2. The laser uses a small core diameter, the energy density is more concentrated, easy to reach the absorption value of copper. 3. Oscillating welding can improve the surface quality of the welding.
Application industries: power electronics, aerospace and aviation
Application case two: copper plate welding
Copper plate welding requires a smooth and flat surface, there can be no fried points and bumps, the back can not have a heat effect, there can be no deformation after welding. Laser welding has high energy density, high welding efficiency, small heat-affected zone, high degree of automation and other excellent characteristics, suitable for welding of copper materials.
Welding skills: the use of ring segmented welding to increase tension, control the amount of deformation, fast and low swing high density, control the bottom of the weld does not wear, small spacing control surface flatness.
Application industries: construction industry, electrical industry
Application Case 3: Copper block welding
The welding of small pieces of purple copper block requires good sealing performance after welding and no cracking of the weld. The melting of the material during the welding process is the key to welding, if the temperature is not well controlled, it will lead to uneven melting of the material, thus affecting the sealing of the weld.
Welding skills: 1. Welding head angle tilt to prevent long-term back reflection damage to the laser. 2. Laser power must reach the absorption value of copper to prevent the light from being reflected. 3. The laser adopts a small core diameter, the energy density is more concentrated, the temperature is stable.
Application industry: new energy industry, battery field
