The challenge of solving square tube bending

Square pipe, also known as square pipe or rectangular pipe, presents certain challenges in bending due to its unique cross-section shape.

Compared with round pipe, square pipe is more likely to produce defects such as flat and crease during bending. This is because the plane of the square tube is prone to deformation.

However, this does not mean that square tubes cannot achieve satisfactory bending results. In fact, as long as the appropriate bending machine is selected and the correct process parameters are taken.

the square pipe can also be accurately bent into a variety of shapes, and is widely used in construction, furniture, decoration and other fields.

Choosing the right square pipe bender

There are many types of pipe bending machines on the market, and they differ in structural principles, power transmission and auxiliary tooling, so the bending capacity of the other tube is not the same. In order to achieve high-quality square tube bending, it is first necessary to select the appropriate equipment.

Hydraulic pipe bending machine is the most widely used at present, it uses hydraulic cylinder to drive the mold to exert bending force on the pipe, and controls the bending Angle and radius by changing the mold shape.

The advantages of hydraulic pipe bending machine are strong power. The disadvantage is that the equipment is large and bulky, and the requirements for the site are higher.

The electric pipe bending machine uses the motor as the power source, and drives the mold movement through the connecting rod mechanism or CAM transmission.

Compared with the hydraulic type, the electric pipe bending machine has the characteristics of small size, high precision, energy saving and environmental protection.

However, its torque output is limited and it is difficult to cope with heavy load conditions.

In addition, there are CNC bending machine, full electric servo bending machine and other high-end products. the cost is relatively high, generally used in mass production.

Master the key process of square pipe bending

After selecting the appropriate bending equipment.

it is necessary to optimize the bending process parameters to ensure the quality of square tube forming. Here are some key process points:

Determine the bending radius reasonably. Too small bending radius is easy to cause the wall thickness of the square pipe to thin or even break. Too large a radius will take up more tube length. Generally, the bending radius should be 1.5 to 3 times the outer diameter of the pipe.

Control the bending Angle. Too large bending Angle will aggravate the difference between the inner and outer wall thickness of the square pipe. Large Angle bending can be achieved by multiple bending.