Laser welding is an efficient and precise welding method that uses a high-energy density laser beam as a heat source. Laser welding is one of the important aspects of the application of laser material processing technology. In the 1970s, it was mainly used for welding thin-walled materials and low-speed welding. The welding process is of thermal conductivity type, that is, the surface of the workpiece is heated by laser radiation, and the surface heat is diffused into the interior through thermal conduction. By controlling the width, energy, peak power and repetition frequency of the laser pulse With other parameters, the workpiece is melted to form a specific molten pool. Due to its unique advantages, it has been successfully applied to precision welding of micro and small parts.
China's laser welding is at the world's advanced level, with the technology and ability to use laser to form complex titanium alloy components of more than 12 square meters, and has been invested in the prototype and product manufacturing of multiple domestic aviation scientific research projects. In October 2013, Chinese welding experts won the Brooke Prize, the highest academic award in the field of welding, and the level of laser welding in China has been recognized by the world.
In 2003, the first domestic large-scale strip online welding complete set of equipment provided by Huagong Laser passed offline acceptance. The equipment integrates laser cutting, welding and heat treatment, making my country HG Laser the fourth company in the world that can produce such equipment.
In 2004, Huagong Laser Farrelay's "High Power Laser Cutting, Welding and Cutting and Welding Combined Processing Technology and Equipment" project won the second prize of National Science and Technology Progress Award, becoming the only domestic laser company with the technology and equipment development capabilities.
With the rapid development of the industrial laser industry, the market has higher and higher requirements for laser processing technology. Laser technology has gradually shifted from a single application to a diversified application. Laser processing is no longer a single cutting or welding. The market requires laser processing. The demand for the integration of cutting and welding is also increasing, and the integrated cutting and welding laser processing equipment of laser cutting and laser welding has emerged.
Huagong Laser Falilai researched and developed the Walc9030 cutting and welding integrated machine, which is a 9×3 meter ultra-large format, which is currently the world's largest integrated laser cutting and welding equipment. Walc9030 is a large-format cutting and welding equipment that integrates laser cutting and laser welding functions. The equipment has a professional cutting head and a welding head. The two processing heads share a beam. The CNC technology ensures that they will not interfere with each other and the equipment can complete At the same time, two processes of cutting and welding are required. Cutting first and then welding, welding first and then cutting, laser cutting and welding can be easily switched. One device has two functions without adding new equipment. This saves equipment costs for application manufacturers and improves processing efficiency and processing range. And because of the integration of cutting and welding, the processing accuracy is completely guaranteed, and the equipment performance is efficient and stable. In addition, it overcomes the difficulty of thermal deformation of the plate during the tailor welding process of super large plates and how to keep the long flight optical path stable. It can weld two flat plates with a length of 6 meters and a width of 1.5 meters at one time, and the surface after welding is smooth. Smooth, no other subsequent processing is required. At the same time, it can cut boards with a width of 3 meters and a length of 6 meters or more and less than 20 mm, forming one time without secondary positioning.
