How to operate the cnc pipe bender correctly to achieve the good bending quality

1. Proper pressure of clamping die and pressure die of cnc tube bender for sale.
The function of the clamping die is to hold the pipe so that the pipe can move together with the bending die of cnc tube bender for saleand the bending work can be done. The pressure of the clamping die need to be big enough to ensure that the pipe moves as designed. Less pressure of the clamping die may lead wrinkles on pipes.

Pressure of pressure die of the cnc mandrel tube bender is very important for the pipe bending quality. The pipe cannot pass through the groove of the clamping die smoothly and may lead to crack on pipes if the pressure is too high. In this case, it’s necessary to move the pressure die of the cnc tube bender a little further from the pipe to reduce the pressure. The pipe will slide and appear wrinkles on inner part of the arc if the pressure of the pressure is not big enough. And in this situation, it’s necessary to move the pressure closer to the pipe to increase pressure.

2.Choose appropriate bending speed for the cnc pipe bender machine.
The bending speed can affect bending quality when bend pipes with cnc tube benders for sale. For example, if the bending speed is too fast, it will cause the flattening of the outer part of the curved arc and the roundness of the bent pipe cannot meet the requirements. In severe cases, this may even lead to cracking and breaking of the pipe; if the bending speed is too slow, it’s possible that the pipe slides and appear wrinkles in the inner part of the curved arc.
Combining years of practical experience in serving customers YANSUMI MACHINERY has this conclusion: when the speed of the bending die of the cnc hydraulic tube bender is about 20％--40％ of the maximum speed of the bending die of the cnc hydraulic tube bender we can get best pipe bending quality.

3. Measurement and position of mandrel on cnc mandrel tube bender for sale The function of a mandrel is to support the pipe wall inside of pipe and prevent the pipe wall from subsiding when the pipe is being bent. There are many kinds of mandrels, such as cylindrical mandrel, universal mandrel with single head, double heads, three heads and four heads and directional mandrel with single-head and multi-head etc. The decision of cnc mandrel tube bender mandrel type should be made based on the measurement and material of the pipe. The position of mandrel on cnc tube and pipe bender has influence on the bending quality, too. Theoretically, the tangent of the mandrel should be flush with the tangent of the bending die of the cnc mandrel tube bender for sale. But, according to experiences in serving different clients, engineers of YANSUMI MACHINERY found that put the mandrel 1～2mm forward can get better bending quality. If the mandrel is too much forward will lead to bad bending quality: the area where is supported by the mandrel will be bigger than other area of the arc and sometimes will cause rupture of the pipe wall.

The above are some suggestions for pipe bending, if you want to know more skills about how to operate cnc tube bender machine to get better bent pipes, you can read our blog “Troubleshooting for cnc tube benders for sale”. We also provide other instructions such as safe operation regulations of cnc tube bender for sale.