Rollers
Welding strip steel into products such as round pipes or tubes, box frames and structural elements is a multi-billion dollar industry that dates back more than a century. Many items we use today, such as furniture tubes, oil pipes and fuel lines, are produced on welded tube mills.
Over the past 20 years, product manufacturers have been encouraged to apply principles derived from tube mills to the much larger section processing market. This has created another technological area known today as welded profiling.
On a tube mill, a forming machine shapes the strip into a round weldable product. The forming machine consists of two main parts: the breakdown and the fin pass. After welding, the tube can be left round, although it undergoes further forming to achieve a more precise outer diameter:
Roller materials: Cr12MoV, SKD11, D2 and hard alloys — tungsten and titanium carbide.
Tube roller range: Round tube: φ5–325 mm Square tube: F10×10 – F300×300 mm Rectangular tube: F10×20 – F120×60 mm
There are four heat treatment options available: (1) Vacuum heat treatment: HRC 61–63 (2) Black treatment: HRC 61–63 (3) Nitride treatment: HRC 61–63 (4) Vacuum gas quenching and cryogenic treatment: HRC 63–65 (5) Note: tube diameter ≥133 mm, HRC: 58–61
CNC EQUIPMENT
turning, milling and grinding equipment integrated into a CAD-CAM computer network is the tool that guarantees the highest quality of custom-made products. The human factor, the many years of experience of our operators and the special care given to each individual roll are additional values of GE Machinery products.
QUALITY
Quality is the key word of our work. It is created step by step during the manufacturing of rolls: from the selection of steel and sintering of tungsten carbide to the inspection of the final product. Advanced instruments, trained personnel and strict procedures guarantee the worldwide renowned, high and stable quality of GE products.
