AC hand arc welding machine is one of the most used and widely used welding equipment on the market. According to the way of adjusting current, it can be divided into BX1 series moving iron type AC hand arc welding machine, BX3 series moving coil type AC arc. There are several main types of welding machines, BX5 series thyristor type AC hand arc welding machine, BX6 series tap type AC hand arc welding machine, among which BX1 and BX6 series products have a large market share in the market.
BX1 series moving iron AC arc welding machine is a welding device that adjusts the current of the live iron in the welder transformer. It is divided into two types: inner slide type and outer slide type. The series of welders can be continuously adjusted. The current is large, and there is a forced air-cooled welder with a cooling fan and a natural air-cooled welder without a cooling fan. In general, the welder with forced air cooling has less material, light weight and convenient handling. However, due to fan cooling, if the fan fails to rotate during use, it may damage the wire package of the welder due to the large welding current. Fortunately, different manufacturers have taken necessary protective measures, such as long service life. The fan with higher reliability, the welding machine increases the overheat detection and alarm, and the power supply is automatically cut off. Therefore, the forced air-cooled welding machine is more suitable for occasions where movement is often required. The naturally cooled welding machine does not need to use more materials. Forced air cooling has higher product reliability than a welding machine with a cooling fan, but the disadvantage is that the price is higher, the weight is heavier, and it is not easy to move and carry. Given occasions of long-term continuous work. After decades of development and optimization, the BX1 series welder has been able to basically meet the needs of the market and is one of the series of arc welding machines promoted by the state.
The BX3 series moving coil AC arc welder is a welding device that continuously adjusts the current by adjusting the distance between the two coils of the welding transformer. The characteristics of this kind of products are affected by the structural design, and the materials used are more. The products of the general manufacturers do not adopt the forced air cooling method, which has higher product reliability than the BX1 series products, because the iron core in the structure is fixed. The working noise is relatively small. In the past one or two decades, there is a certain market share. Because of the large amount of materials, the product performance price advantage is poor, and the country is preparing to eliminate the product, but it is doubled due to the high reliability of the welding machine. It is widely used by some units, and it is widely used in vertical submerged arc welding of steel bars and gouging power supplies. If you can afford the price, the BX3 series welder can give full play to its superior product performance.
The BX5 series thyristor type hand arc welding machine is a welding device that uses a one-way or two-way thyristor device to adjust the welding current. Due to the non-contact non-mechanical adjustment current mode, the technology is advanced, and the structure is more reasonable. The electronic control circuit can realize multi-character welding such as constant voltage, constant current, descent, and descending, and increase arc ignition according to needs. Functions such as thrust current are not available with any other mechanically adjustable welder. However, since this series of welding machines has only entered the market in recent years, and there are always some technical problems in this early stage, there is still a certain gap in the reliability of the products. If users want to try technology and new products, such products can be Satisfy your desire for high-tech products and requirements, but it requires more courage and change.
BX6 series tap type AC hand arc welding machine is a welding device that changes the welding current by changing the tap position on the welding transformer to realize the coupling degree between the primary coil and the secondary coil. This series of welding machines is characterized by less material, simple structure, low cost and low price. It is the main type of low-end products on the market. The disadvantage is that the current is adjusted by the switch, and the current cannot be continuously adjusted. The current is difficult to grasp when welding thin plate parts, and the operator needs to have high technical proficiency. It is only suitable for small current, sporadic processing or repair. Complement the industry. This type of product also has a forced air cooling method with a cooling fan (lower price and natural cooling without a cooling fan) (notably suitable): it is worth noting that this type of welding machine is used for adjusting welding by using a transfer switch. The current shift switch has a high failure rate, especially in the welding process, the switch cannot be adjusted, otherwise the switch is easily burned, which may cause the welder to malfunction.
Users should choose the appropriate AC hand arc welding machine products according to their needs, in accordance with the principle of economical and practical use, but the quality difference in the market is not only the small product nameplate, but also the national standard. Non-standard products, large current can not come out, small current can not come out, plus no-load current is very large, the output voltage is very low, the welder characteristics are not qualified, so it is best to use different thickness of the electrode when testing If you try, you will find the difference between the good and bad quality of the welder. If you can have a clamp meter for electricians, multimeter, measure the primary current and output voltage when no load is not welded, and measure the high welding time. The low-voltage side current will also find a lot of knowledge inside. After several trials of several products or even dozens of products, you may find the most satisfactory products.
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