How does a pipe bending machine work?
Hydraulic pipe bending machine – “Great force creates miracles”
Use strong cold pressure to press steel pipes and other metal materials into the desired shape, and do not damage the material due to excessive temperature. The mold can be quickly replaced according to demand, and the efficiency is extremely high.
CNC pipe bending machine – “intelligent robot”
Control the desired bending angle and shape through computer programming, automatically complete complex bending, with extremely high precision (small errors that can be ignored), more accurate than manual operation.
Pipe bending techniques for different materials
|
Material Type |
Applicable scenarios |
Key operating points |
|
Steel pipe |
Building structures, oil and gas pipelines |
A high-power machine is required, and after work, check for cracks. |
|
Copper Tube |
Air conditioning refrigeration pipeline |
In order to avoid scratching the inner wall, a lubricating rod with a nylon core should be installed. |
|
Exhaust pipe (stainless steel) |
Automobile, mechanical equipment |
Bending at multiple angles through computer data machines |
|
PVC plastic pipe |
Sewer and irrigation systems |
To prevent damage during cold bending, the pipe should be heated and softened before bending. |
Typical cases in practical application
Automobile manufacturing
In order to reduce the vibration and noise of the car, the CNC pipe bending machine will wrap the stainless steel exhaust pipe around the engine and bend it into a snake shape.
The copper pipe for battery cooling of new energy vehicles needs to be highly cleaned, and the hydraulic press should be equipped with a lubricating rod with a nylon core material point to ensure the smoothness of the inner wall and prevent the inner wall from being scratched.
Construction engineering
The hydraulic press can batch process Φ200mm thick steel pipes for the curved ceiling brackets of large gymnasiums.
PVC drain pipes are heated and bent into U-shaped water traps, and water can be stored through U-shaped pipes to prevent sewer odor.
Home life
The copper pipe can be manually bent to connect the air conditioner indoor unit. Although the tools are simple, it is necessary to avoid dead bends that cause refrigerant leakage.
The steel pipe hooks on the supermarket shelves are bent into an arc with a hydraulic press, bearing up to 500 kg.
Common problems and pitfall avoidance guide for pipe bending
Pipe flattening
Solution: Like “inserting wire into a straw”, prevent the mandrel support in the machine to maintain the straightness of the pipe
Angle deviation
CNC equipment is calibrated in real time by laser, with an error of less than 0.1°.
Material cracking
Steel pipe/copper pipe: control the bending radius, slow down the bending speed, and prevent metal fatigue.
PVC pipe: The pipe should be heated and softened before bending, cold bending is easy to break
