Straight Seam Carbon Steel Pipe Tube Making Machine

High Precision Straight Seam Carbon Steel Pipe Tube Making Machine Welded Mill Production Line

Working Process Flow of Pipe Welding Machine

Raw material steel strip→Feeding→Uncoiler→Leveling→Shearing and butt-welding→Cage accumulator→Forming machine→HF welding→De-burr→Water cooling→Sizing→Cutting to length→Roller table→Final inspection→Storage

Main specification of the production line

1. Products to produce

1.1 Round pipe:φ48-φ127mm

Thickness:1.5-4.0mm

Length:6-12mm

2. Specification

2.1, Mill product speed:≤80m/min

2.2, Raw strip steel:

Raw material is low carbon steel and low alloy steel of hot rolled coil and cold rolled coil.

2.3, Size of Raw material

Thickness:1.5-4.0mm

Width of steel strips:190-400mm

Coil OD:800-1500mm

Coil ID:450-550mm

Coil weight:7t

2.4, Raw material steel strip material demand:δb≤560Mpa, δs≤340Mpa.

2.5, Raw material standard

Raw material quality standard:As per BS or EN

General Technical Specification

1. Raw material requirements
Material: Hot rolling or cold rolling steel
Tensile strength: σb≤600Mpa
Yield point: σs≤315MPa
Coil width: 60~240mm
Coil outer diameter: Max. Φ1600mm
Coil inner diameter: Φ508mm
Coil weight: Max.2.0T
Material thickness: 1.0~2.5mm for Round pipes / ≤2.0mm for Square & rectangle pipes

2. Output product scope
Pipe type: Straight seam high frequency welded pipes
Pipe purpose: Electric heating tube, fridge pipe, Auto car pipe, sporting facility tube, furniture pipe, cooler pipe, pressure feeding pipe, construction pipe, configuration pipe.
Round pipe size: Φ20mm~Φ76mm * 1.0mm~2.5mm
Square pipe size: 15×15mm~60×60mm * 1.0mm~2.0mm
Rectangle pipe size: 30×20mm~80×40mm * 1.0mm~2.0mm (a:b≤2:1)
Producing length: 4~10m (can be designed by customer request)
Cutting length precision: ±3mm (by hot flying computer saw)

3. Line capability
Line direction: Pending and will be decided by Buyer
Producing speed: 30~80m/min

4. Scope of supply

4.1. Technology process
Uncoiling→ Accumulating→ Leveling→ Forming→ HF welding→ Deburring (outer) → Cooling→ Sizing→ Straightening→ Cutting→ Discharging

4.2. Parts of Line
Double heads Decoiler--------------------------------1 set
Shear & butt welding device-------------------------1 set
Horizontal accumulator--------------------------------1 set
Forming & Sizing unit----------------------------------1 set
Hot flying computer saw----------------------------------------1 set
Run out table (single side discharging)-----------1 set
Control system------------------------------------------1 set
Roller------------------------------------------------------Optional / prepared by Buyer
Pneumatic system--------------------------------------Prepared by Buyer

Main Technical Performance

Process of High Frequency Pipe Welding Machine

{Steel strips} →→Auto Double-head un-coiler →→Strip-head Shearer & Auto TIG butt welder station →→Horizontal spiral accumulator group →→Forming M/C (Main driving unit + Flattening Entry unit + Breakdown section + Fin pass section + Sea m guide unit + High frequency induction welding system + Squeeze welding roller unit + Outside scarfing unit + Horizontal ironing stand) →→ Emulsion water Cooling section →→ Sizing M/C (Main driving unit + Sizing section + Speed testing unit + Turk straightener + Vertical pull-out stand) →→ NC flying saw under computer control →→ Run-out table

Main structure

1. Double heads Decoiler (Manual type)

Configuration: Two drums expanding by hand

Coil inner dia.: Φ508mm

Coil outer dia.: ≤Φ1600mm

Material width: 60~240mm

Coil weight: ≤2.0T

Braking type: Two phase braking by pneumatic

Drums exchanging: 180° turning by hand

2. Automatic shearing & butt welding (Pneumatic shear)

2.1. Shearing method:

Type: Pneumatic shearing

Pneumatic system: 0.4~0.7Mpa

Adjustable range: Φ120

Cutter blade: 1 pair

Material of blade: Cr12 (HRC58~62)Strip width: 60~200mm

thickness: 0.8~3.0mm

2.2. Automatic Argon Arc welding

Type: PLC control, Frequency controlled TIG automatic welding

Welder: TIG

Welder current: 22~315A

Protection gas: Argon whose purity over 99.99%

Welding gun: 1 set

Clamping: Pneumatic

Welding time: 75~350mm/min

2.3. Outer size: 1100 x 1100 x 1650mm

3. Horizontal accumulator

Accumulator: introduce peripherally and feeding from center

Out diameter: 4.5m

Width of metal strip: 60~240mm

Thinness of metal strip: 1.0~2.5mm

Feeding speed: ≥150m/min

Configuration: Turning frame, Pinch machine (11kw AC motor), Main body (15kw AC motor)

Feeding control: Feeding is manual control which same as Uncoiler; Discharge is non-power style.

4. Forming & Sizing unit

Forming & Sizing

Parts of Forming & Sizing:

Driving system-------------------------------------1 set

Second grade transmission---------------------13sets

Feeding & Leveling device----------------------1 set

Horizontal roll frame------------------------------13sets

Vertical roll frame----------------------------------13sets

Driving system

Forming & Sizing driving system: 1 sets

Motor type: Z4-200-31 132Kw/1500rpm

Reducer type: ZLY hard gear reducer

Motor driving system: Control by DC digital converter

Second grade transmission

Transmission type: Gear box and gimbaled joint

Gearbox configuration: Spiral bevel gear & cylindrical helical gear

Lubricating: Gear oil soaking

Oil level display: Inspection glass on box

Horizontal roll frame & Vertical roll frame

Forming height: Φ140mm

Adjusting of Horizontal roller: Manual (or manual sync adjustment)

Adjusting of Vertical roller: Manual sync screw adjusting

Welding

Parts of Welding:

Guiding frame------------------------------------------1 set

Welding pinch frame----------------------------------1 set

HF welder------------------------1 set (or prepared by Buyer)

Deburring cutter (Pneumatic) ----------------------1 set

Welding pinch frame

Type: 3 rollers pinch

Shaft diameter: Φ40mm

Material of shaft: 40Cr (HF quenching)

Adjusting: Manual screw adjusting

Deburring cutter

Type: Two cutters setting

Feed/retract: Pneumatic adjusting

Cutter adjustment: Manual screw adjusting

High frequency welder:

Type: High frequency influence welding

Size: GGP-200-0.4-HC

Power: 200Kw

Cooling

Cooling way: Spray and soaking

Length of cooling: 3500mm

Speed supervising device

Type: Two roller type with pneumatic clamping

Quantity: 1 set

Outer dia. of roller: Φ111.4mm

Foundation and advised Buyer’s necessary

Site area of machine (length X Width): 55m × 7m
Site area of cabinets (length X Width): 6m × 3m
Machine foundation base: See foundation drawing CAD
Overhead crane: 2 sets of ≥5 Ton overhead crane
Magnetic bar (impeder core): prepared by Buyer
Saw blade: Prepared by Buyer
Lubricating oil grease, cooling emulsion and etc will be prepared by Buyer
One set of Emulsion water cooling pool (Volume 30 m­3*1pools)for pipe-welding mill and plate exchanger of HF-welder, with two sets of pumps(AC4Kw,lift≥30m­ & flux≥30m­3/hour),water pressure meter,valves,and water pipes will be prepared by Buyer. Or use one set of glass fiber cooling tower for Emulsion water cooling pool and plate exchanger of HF-welder.
Adopting ground or attic frame and room of high-frequency welder for machine unit, stack basket for welded pipe, made by buyer.
The cables which from power station to pipe mill line, and cables & wires between machines and cabinets, all of them will be prepared by Buyer.
One set of ≥1m­3 /min air compressor and one set ≥0.50m­3 air tank, 0.7~1.0Mpa. Whole of the pneumatic supply system will be prepared by Buyer.
Lifts,tools,anchor bolts,expand bolts,embedded and fixing materials for installing machine will be prepared by Buyer.
Power supply:
High frequency welder power: GP-200Kw
Power of supply: 3P/4W/380V/50Hz
Total power of Line: 450Kw