Foreword: As an important part of modern welding technology, arc welding technology covers almost all areas of welding production. MIG/MAG welding technology is also an important part of arc welding technology. With the rapid development of industry, market competition is becoming more and more fierce. In order to improve the market competitiveness, all manufacturers are in urgent need of welding power sources that can weld high-quality welds and are durable. They can be applied to a variety of materials and metals of different thicknesses, which is easy for users to operate. And it can be applied to efficient welding, realize man-machine dialogue, and test, judge, control and so on the entire welding process. CLOOS MIG/MAG welding power supply has its own unique insights on the above problems, which have solved these problems well and made a greater breakthrough to a certain extent. 1 Welding digital control technology Digital welding is the use of computer technology to control the state of the welding equipment during operation to meet and meet the requirements of the welding process to obtain high quality welds. Germany CLOOS welding machine is the world's first multi-functional MIG/MAG welding machine with digital control, and has always been in the leading position in the history of welding power supply. Now CLOOS welders have a large user base in their class, and users highly value their functional diversity, rich and practical expert procedures, long-term reliability and durability. The CLOOS MC4, MC3, and QUINTO series of multi-function welders are all intelligent welders. As long as the user sets the relevant parameters of the material to be welded, the "brain" of the welder automatically adjusts the most suitable welding specification for the welder output without splash. The QUINTO welder can store up to 20,000 welding programs and more than 100 unification welding curves for the operator to call. Other welders can store 100 welding programs and more than 100 unified welding curves for the operator to call. CLOOS MC4 MC3 QUINTO series multi-function welder microprocessor-controlled digital welding power supply can realize MIG/MAG, TIG and manual arc welding, MIG brazing process. When multiple people make a personal access key, the operator can perform personal operations and information management. The control panel that can be moved can be used either fixedly or remotely, and is quite user-friendly. 2 perfect work - perfect welding characteristics Low Splash Arcing - The SPAZ function is CLOOS' patented technology that guarantees stable low (SPAZ) splash and arcing. Limiting the arcing current can increase the life of the conductive tip, reduce splash hazard and improve wire feed stability. Wire tipping - stable back-burning at the end of the weld to ensure stable and low spatter during re-arcing. Double Pulse - The CLOOS dual pulse system built into the welder increases penetration and improves molding. Double pulses are used not only for welding aluminum, but also for welding other materials such as structural steel and CrNi steel. U/I and I/I modulation: U/I pulse modulation: It can ensure stable and good penetration in medium and large specifications, independent of materials. I/I pulse modulation: It is a process control method under small specifications, such as welding thin plate welding parameters: arc starting, main specification, arcing specification, the first pulse specification can be separately set Push-pull wire: lengthen the cable during hand welding and expand the working radius (optional) Gas flow sensor: monitors and displays gas flow (optional) Automatic welding port: robot and PLC control interface (optional) WDM: Welding Data Management Diversion is a hypervisor and unified curve windows generation PC software (optional) 3 Excellent reliability and stability CLOOS's MIG/MAG welding power supply unit relies on years of market experience and original accumulation and does not advocate the use of primary inverter technology for high-power welding power supplies. They believe that the high-power welding equipment host structure uses the original end inverter reliability is poor. Directly through three-phase rectification, capacitors, switches to the transformer's primary inverter power supply, when the high voltage is passed through the inverter, some electronic components (including the circuit board) in the inverter are difficult to withstand this high voltage. Constant impact, affecting normal use and shortening life. It is precisely because of these reasons that many inverter welders have higher failure rates. Two years ago, there were experts in Europe who did a research in the market (including the Chinese market). Not many suppliers can guarantee that their inverter welders will not malfunction after being used by users for one year, including some internationally renowned large companies. According to the needs of the market, CLOOS has invested a large amount of resources to develop a unique high-power secondary inverter welding machine, which has been verified by the application in the market for many years. Its perfect welding characteristics and excellent reliability make the users praise, and always maintain the leading edge in the market. According to the survey, CLOOS' MIG/MAG arc welding equipment has been used for more than ten years in some manufacturers, and its performance is still good and there is no fault phenomenon. a The working principle of the original inverter welding machine cycle
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Welding parameter unification curve 
Welder operation panel
CLOOS uses secondary inverter technology in MIG/MAG welders (MC3, QUINTO series) with welding currents greater than 350A, and uses primary inverter technology in MIG/MAG welders (MC4 series) with less than 350A.
The principle of CLOOS's high-power secondary inverter welder is to pass the transformer first when the current enters the welder to obtain the required stable low voltage. Low voltage enters the inverter for rectification and other related work. This greatly increases the life of the inverter and improves reliability. (pictured) 
AC rectifier transistor transformer rectifier filter arc
b How the secondary inverter welder works
Alternating current transformer rectifier transistor filter arc
In summary, a good welding power source not only needs to be light and flexible, but also needs to be humanized, intelligent, and very high reliability. Germany CLOOS company is people-oriented, considering the needs of users, providing a digital welding power supply with excellent performance and durability.
Power control principle of German CLOOS digital welding machine
Abstract: High quality weld requirements and the reliability and stability of the welding power supply are the most basic requirements for every welding power source user. There are actually not many manufacturers that can truly be compatible with each other. The fully digital pulsed MIG/MAG welding equipment launched by CLOOS in Germany successfully solves the problem that the user has difficulty in both ends, and improves the efficiency of the welding power supply of the production enterprise.