| How do customers choose pipe bender?
The company construction unit customer introduction of a download order bending machine when the first need to understand the bending machine: die forced forming method, its representative is to use a punch to produce bending parts; Roller bending method, commonly seen in electric three-roller bending machine, which is characterized by only rolling different arcs, is the most widely used stainless steel decoration industry; Top pressure rolling method, common in electric platform bending machine, the current hydraulic bending machine in the double bending machine is also using this forming method; Winding bending method, all single head hydraulic pipe bending machine and CNC pipe bending machine on the market are using this forming method, which is characterized by small deformation of the product, basically can avoid scratches on the surface of the pipe, the ellipticity and thinning of the pipe when the core bending can be controlled within a certain range.
If the mandrel is used, it can be divided into two categories, namely, mandrel bending method and mandrel bending method. Hydraulic pipe bending machine and pipe bending machine are designed according to winding type bending, and can be cored bending and core-free bending.
In actual production, what kind of pipe bending machinery is suitable for their own equipment? In fact, this question does not need to ask others, just ask your production capacity on the line, a small amount of thin elbow production you would not go to choose tens of thousands of equipment to produce it. Instead, you'll have to weigh whether to use a more efficient production facility or a low-cost, labor-intensive one that you're worried won't be able to produce on time.
Medium frequency bend adopts vertical external characteristics of the power supply, dc using positive polarity (wire to negative)
Medium frequency bend pipe is generally suitable for welding of thin plate below 6mm. It has the characteristics of beautiful weld forming and small welding deformation
The protective gas is argon with purity of 99.99%. When the welding current is 50~50A, the argon flow rate is 8~0L/min, when the current is 50~250A, the argon flow rate is 2~5L/min.
Welding arc length, welding ordinary steel, 2~4mm is the best, and welding stainless steel, ~3mm is the best, too long the protection effect is not good.
In order to prevent the appearance of welding holes, if there is rust and oil pollution in the welding part, it must be cleaned up.
Tungsten pole protruding from the gas nozzle length, 4~5mm is the best, in the corner welding and other poor shelter is 2~3mm, in the deep slot is 5~6mm, nozzle to work distance is generally not more than 5mm.
In order to prevent the back of the bottom pass from being oxidized, the back of the intermediate frequency elbow butt should also be protected by gas.
Wind protection and ventilation. In windy places, take measures to block the net, and take appropriate ventilation measures indoors.
In order to protect the welding pool well by argon gas and facilitate the welding operation, the tungsten center line and the workpiece at the welding place should generally keep an Angle of 80~85°, and the Angle between the filling wire and the workpiece surface should be as small as possible, generally about 0°. Surface Angle should be as small as possible, generally 0° or so.
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