Straight Seam Carbon Steel Round Square Pipe Tube Welding Making Machine

Product Specification

Straight Seam Carbon Steel Round Square Pipe Tube Welding Making Machine

Composition of the production line

Horizontal roller rack:

It’s used to install horizontal roller and is the main parts in forming machine. It adopt gantry cast iron structure to make sure that hardness and precision of rack structure. Memorial arch is up out roller. Down roller height is not need high speed roll base line height. It live on mill precision and high precision insurance mat to make sure that all horizontal rack make up by two sides open rack. When you change rollers, pull and unlink the in front rack and shaft direction to pull the roller, then you can change. Height of main roller shaft can adjust. The distance between two sides open rack roller and shaft shoulder can stem by roller pad. Horizontal roller rack has overload safety insurance device. The rack material is ZG270-500.

Vertical rack:

It is used for install vertical roller. The function is let the two horizontal roller rack change the shape and restrain pipe blank spring back after out to horizontal roller and guiding. Vertical roller rack main shaft is single point support to change roller convenient. It use pulling plate as auxiliary support and fixed by bolt spiral tight. Symmetry center of two side roller shaft need adjust by adjust barrel. The distance of two side three roller shaft should adjust by turn the screw. Vertical roller height should make sure by roller pad.

Welding seam guide roller rack:

The location is before press roller rack. It is used to install guide roller. The function is :

A. Control the direction of pipe seam to make sure pipe seam into press roller straight.

B. Control the size of angular aperture.

C. Control the center location of pipe blank to make sure that alignment the hole pattern of press roller.

The interval of up and down roller can adjust by bolt. Up and down two side roller install in a drive support. It is through worm and worm gear crown to adjust round angle. The whole transport seat can adjust up and down by screw. And also adjust screw can adjust vertical.

Press roller rack:

It is used for install press roller. The function is heating the pipe blank edge hot up to the temperature can welding. Welding by press roller offer some press. The structure mode is two rollers press.

Scraping welding device:

It is used for scrap the outside seam and clean outside burr. It consist of two sets blade to alternate use. That can continue to scrap when the blade changing. Blade can adjust up, down and cross and can lifting quickly. Lifting quickly can come true by pneumatic and machinery. Blade above have burr twine device. Blade rack downward have two roller to make sure the down pressure when it scrip.

Cooling derive:

Making sure welding area is cold enough, when pass sizing machine, pipe can achieve precision sizing and coarse straightening. Adopt spray and water bath structure.

1. Single uncoiler

Use: Open coil to steel strip.

Structure and work principle:

Cone head and hydraulic rectangular pyramid are structure.

Steel strip thickness:1.0-5=4.0mm

Steel strip width:190-400mm

Coil OD:800-1500mm

Coil OD:450-550

2. Five-roller leveling machine

User: used for steel strip leveling, main for leveling the head and end.

Structure and work principle

With a pair of pinching roller and leveling roller two up three down arrange at entrance strip. Pinching roller , leveling roller hydraulic cylinder depress , Leveling roller redard depress though worm , front and back both side worm plumbing at the same time, make sure up leveling roller and down fixed roller parallel, have leveling result.

Leveling speed:10m/min

Pinching roller qty:2

Pinching roller diameter:210mm

Straighter roller qty:5

Leveling roller diameter:120mm

Roller length:400mm

Main motor power installed capacity:11KW

3. Shearing and butt-welding machine

Use: Shearing and butt-welding before steel strip end and back steel strip head.

Structure and work principle

On production line, one steel strip feed to accumulator, when strip tail enter into shearing and butt-welding pinching steel strip position, shear blade fall, finish strip tail shearing ,then crane moving, export welding joint. When another strip enter this equipment shearing system, pinching steel strip, aligning strip head and tail, shearing strip head. Then pinching strip head and tail, begin to weld.

Max, Min, Average operation time:Max8min

Adopt CO2 welder

Wire feed speed:300-500mm/min

Max, Min welding time:2-5min

Shearing force:max80T

4. Cage accumulator

Use:Accumulator can receive steel strip from uncoiler discontinuously, at the same time. Function: Offer steel strip function for forming and sizing machine continuously. Storage strip before steel strip into forming machine, to make sure welding mill product continuously during front and rear steel strip butt-welding period

Structure and work principle

Front pinching roller diameter:φ210mm

Roller length:400mm

Driving motor type:Y4-160-21 30kw

Entrance steel strip speed:180m/min

Export steel strip speed (At the same time with product line).(Max80m/min)

boundary dimension:8000×2000×3600(length×width×high)

Storage ability(max and min standard):300m-500m

5. Forming and sizing machine

Function: It’s main equipment in production. It can roll the strip to round and welding it to pipe. The welding mode is HF welding.

φ114*4.0 mill adopt W-shape roller forming process.

Mill job lever:800mm

Mill rack arrange

WPL WL B₁ B₂ C₁ B₃ C₂ B₄ C₄ C₅ C₆ F₁ FG₁ F₂ FG₂ F₃ FG₃

SG SQ(2 rolls) BXW IQ DG₁ S₁ DG₂ S₂ DG₃ S₃ DG4 S4 DG5 S5 DG6 S6 TH₁ TH₂

Lever roller diameter:φ100mm

Vertical roller diameter:φ60mm

Main motor: DC motor

Forming:90KW×1set sizing:110KW×1set

Main reducer:2sets(all use hardness gear surface structure)

Forming:1set Sizing:1set

Product round pipe should adopt W roller forming process;

When produce square pipe, round to square technique are adopted

Remarks on Main machine performance

Feed in device:

The device set in order to let steel strop come in mill smoothly. It adopts Horizontal roller which up three and up and down adjust at the time and down four fixed Horizontal roller feed in vertical roller by in front and behind roller. It can straight and side direction location the steel trip.

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

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