What are the differences between medium frequency inverter spot welder and high frequency inverter spot welder?
Welding inverter frequency is not high. Strictly speaking, it is medium frequency inverter. Usually the switching frequency of tens of KHz called MF, 100KHz or better known as high frequency. Generally speaking, most of the small power machine are designed more than 100K. If the welding welding machine of big power module do you usually like this. 2025Khz is also useful discrete MOS, will be designed to more than 100K.The difference in performance is not good, welding can be done well, because the inverter welding machine final output is DC. What is the switching frequency on the performance of little impact?Of course, seriously, the power of the proposed use of the so-called "intermediate frequency machine", how to say that is also designed to use modules, and spend money is worth
The main difference between medium frequency inverter welding machine and high frequency inverter welder is the difference of operation frequency. Medium frequency inverter welding machine is generally 800-1000 weeks work frequency; high frequency inverter welding machine is generally 1000-25000 weeks work frequency.Inverter spot welder is characterized by small power and high efficiency. The reason for the small power is that the battery can solve the problem of spot welding without AC power supply. But power is impossible because it is powered by batteries. Most of them are compact and portable, and frequency conversion is adopted to improve the efficiency of power conversion. In general, the higher the frequency, the higher the efficiency of inverter conversion, the higher the cut-off frequency requirements of the inverter. But considering the work environment, interference, radiation and other issues, nor is the frequency of work, the higher the better election.At present, there are two kinds of inverter, spot welder, frequency and high frequency. Intermediate frequency machine operation frequency 1000HZ (week) or so. High frequency machine operating frequency 4000HZ (week) or so, the highest 25000HZ (week) products.
Difference：1: medium frequency spot welder adopts amorphous magnetic core, welding transformer performance is superior.2: the welding process and welding specifications are controlled by chip computer closed-loop, which can realize many kinds of welding cycles conveniently.3: welding parameters are set by touch button, and displayed by LCD screen, man-machine interface highlights the trend of the times.4: the unique electrode pressing mechanism, the electric power to adjust the sensitivity, with high mobility, so that the inverter spot welding machine is particularly suitable for welding fine workpiece.5: the microcomputer high frequency inverter spot welding machine adopts microcomputer precise control of welding for voltage fluctuation and weld or explosive phenomenon, to ensure that every time the favorable welding effect. Operation settings Simplified: parameters of microcomputer, LCD LCD display, keyboard adjustment, accurate, intuitive and convenient.Intermediate frequency welding inverter principle: frequency inverter welder alternating current rectifier filter inverter 50HZ for 800HZ to 2000HZ frequency square wave, the intermediate frequency transformer (about the size and weight of the transformer only traditional welding transformer for low voltage AC buck 40%) after single-phase full wave rectifier for low voltage DC power, through the integration of spot welding or fixed spot welder in the process of welding. The output current is in the DC form, the welding speed is faster, and the welding process is more stable, and the current regulation process is faster and more accurate.
