Straight seam high frequency welded pipe roll forming machine

Brief introduction of Straight seam high frequency welded pipe roll forming machine:

Welded steel pipe also called welded steel pipe, commonly they are made by steel or steel strip slitted by slitting line. After leveling, the coil will be changed to shape of pipe by roll forming principle. The production process is simple but the production efficiency is high efficient. The Straight seam high frequency welded pipe roll forming machine can produce variety specification in sizes from 10 to 127mm, in shapes, it could be square, round, oval and uncommon shapes.

Since the thirties of the 20th century, with the rapid development of high quality cold rolling strip steel rolling production and progress of welding and inspection technology, continuously improve the quality of welding steel pipe specifications. Now the welded pipes are increasing and used in more and more fields especially in heat who spare tube, decorative tube, low pressure fluid pipe which are replacing seamless steel pipe. Straight welded pipe production process is simple, high production efficiency, low cost, rapid development.

The Straight seam high frequency welded pipe roll forming machine is composed by the following elements:

Hydraulic Single-arbor uncoiler with peeler

Five-roll Flattener

Shearing & butt welding machine

Spiral Accumulator

Forming and sizing mill

GGp300KW Solid state H.F. Welder+ 2Electric Control System

CNC flying friction saw

Rollout Table (18m)

The working process of straight seam high frequency welded pipe roll forming machine:

{SteelTape}→→ Single-arbor un-coiler →→Strip-head Cutter and welder→→

Spiral Accumulator→→Forming section(Flattening unit +Main driving unit +Forming unit +Guide unit +High frequency induction welding unit +squeeze roller)+ De-burr frame →→Cooling unit →→ Sizing unit and straightener →→Flying saw under computer-control →→ Run-out table→→straightening

Quality Control of Straight seam high frequency welded pipe roll forming machine
A variety of measures are taken to ensure that the finished steel pipe meets specifications. For example, x-ray gauges are used to regulate the thickness of the steel. The gauges work by utilizing two x rays. One ray is directed at a steel of known thickness. The other is directed at the passing steel on the production line. If there is any variance between the two rays, the gauge will automatically trigger a resizing of the rollers to compensate.
Pipes are also inspected for defects at the end of the process. One method of testing a pipe is by using a special machine. This machine fills the pipe with water and then increases the pressure to see if it holds. Defective pipes are returned for scrap.

Here are some detail specification of Straight seam high frequency welded pipe roll forming machine for your reference:

Forming & sizing section

1 Forming mill gearbox, universal joint

1.1 Mill entry flattener by up-horizontal roll and below-horizontal roll, one positive five-roll flattener, one pair of feeding vertical roll.

1.2 Forming mill consists of:

- Driven stand: 7 sets (Horizontal)

- Driven stand shaft: Φ 80mm

- Material of shaft: 40Cr

- Side roll stand: 8 sets(Vertical)

- Side roll stand shaft: Φ45mm

- Material of shaft: 40Cr

- Gear box & universal joint: 7sets

- Material of gear box: cast steel

- Material of gear: 20CrMnTi

- Main motor: 132kW Model: Z4-250-31 1 set

- Main redactor: ZLY250 1 set

2 Sizing mill gear box, universal joint

2.1 Sizing mill consist of:

- Driven stand: 5 sets (Horizontal)

- Driven stand shaft: Φ80mm

- Material of shaft: 40Cr

- Side roll stand: 5 sets (Vertical)

- Side roll stand shaft: Φ45mm

- Material of shaft: 40Cr

- Gear box & universal joint: 5 sets

- Material of gear box: cast steel

- Material of gear: 20CrMnTi

- 2 set single head Turk`s head, with 4 rollers*2sets

- One speed testing roller with air cylinder for CNC flying saw

- Main motor: 132kW Model: Z4-250-31 1 set

- Main redactor: ZLY280 1 set