Copper Strip DC Current Spot Welding Machine

The MD series MF inverter spot and projection welding machines are advanced resistance welding equipment designed for high-performance applications. These machines feature a compact welding transformer with high energy output, making them ideal for use in the automotive industry, particularly for transformer-style clamping systems. One of the key advantages of the MD series is its ability to upgrade the frequency from the standard 50/60 Hz to 1000 Hz, significantly reducing the weight of the core material. Additionally, the rectifier diodes in the sub-circuit convert the energy into direct current (DC), which improves the efficiency of the welding process and reduces production costs. The large open area in the secondary circuit minimizes interference, ensuring stable and consistent welding performance. By using DC current, the machine avoids magnetic interference, even when working with magnetic materials. This makes it highly suitable for precision welding tasks. These welding machines are powered by three-phase electricity and can store energy, allowing them to maintain stability during power fluctuations. Instead of drawing directly from the grid, they use stored energy to supply the load, enhancing adaptability to voltage variations. The MF series offers more accurate and faster current control compared to traditional systems, enabling precise parameter analysis. The welding current can be set up 20 times faster than conventional technology, improving overall efficiency. Direct current welding ensures a more reliable process, especially when working with metals that benefit from DC welding, such as aluminum and galvanized steel sheets. This leads to reduced operating costs, including lower energy consumption per weld and shorter cycle times. Energy savings are another significant advantage, as these machines consume less electricity compared to traditional frequency systems. They are particularly effective for welding thick workpieces and high-conductivity materials, making them a versatile choice across various industrial applications.

Tinplate

Tinplate (SPTE, tin-coated iron) is the common name of cold-rolled electroplated tin sheet, which refers to the cold-rolled low-carbon sheet steel or steel strip coated with commercial pure tin on both sides.
Characteristic advantage
1.Light permeability
In addition to triggering deterioration reactions in foods, light also causes changes in proteins and amino acids. The exposure of vitamin C to light makes it easier to interact with other food ingredients, resulting in a large loss. According to research and analysis, the loss of vitamin C in transparent glass bottles of milk is 14 times higher than that in dark bottles of milk, light will also cause milk to produce oxidative smell, as well as nuclide, methionine and other cracking and loss of nutritional value, tinplate can opaque light makes the highest preservation rate of vitamin C.
2.Good sealing
The barrier of packaging containers to air and other volatile gases is very important for the preservation of nutrients and sensory quality. The comparison of various juice packaging containers showed that the oxygen permeability of the container directly affected the Browning and vitamin C preservation of the juice. The preservation of vitamin C is better in metal cans, glass bottles, aluminum foil glue layers and cartons with low oxygen transmission rate, of which iron cans are the best.
3.Reduction of tin
The tin in the inner wall of the tin plate will interact with the oxygen remaining in the container during filling, reducing the chance of the food ingredients being oxidized. The reducing effect of tin has a good preservation effect on the flavor and color of light colored fruits and juices, so the juice cans filled with unpainted iron cans have better nutritional preservation than those filled with other packaging materials, and the Browning change is slight, the acceptance of flavor quality is better, and the storage period is extended.
Use
The application of tinplate is very wide, from as food and beverage packaging materials to grease cans, chemical cans and other miscellaneous cans, the advantages and characteristics of tinplate provide content in the physical and chemical properties of good protection.

Tinplate sheet,Tinned iron plate,cold rolled low carbon sheet steel,electroplated tin sheet steel

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