115 HF Tube Mill Line For Carbon Steel Strip

1. Product overview

1.1 This is a special equipment for the manufacturing of straight seam tube (Φ 48~Φ 127 mm, δ 1.5~5.0 mm), square tube and irregular tube (δ ≤ 4.0 mm). The whole equipment includes devices from discharge rack to cut-off saw, and the manufacturing speed could be adjusted in certain range of the diameter and wall thickness.

 

1.2 Applicable material：

(1) Hot-rolled or cold-rolled strip steel

(2) Material type: low carbon steel, low alloy steel

(3) Strip thickness: 1.5 ~ 5.0 mm

(4) Strip width: 150 ~ 400 mm

(5) Internal diameter of coil: Φ450 ~ 550 mm

(6) External diameter of coil: Φ1000 ~ 1500 mm

(7) Coil weight: ≤ 3500 kg

 

1.3 Size rang of tube:

(1) OD: Φ48 ~127 mm

(2)Wall thickness: 1.5 ~ 5.0 mm (for square tube and irregular tube, ≤ 4.0 mm) (3)Length: 4 ~ 8 m

 

1.4 Products (steel) production process:

Raw materials (strip steel) →discharge →cut of the head and tail and butt weld → storage silo → no power leveling → shape rolling→high-frequency welding→ remove seam outside burr sizing →removal of the burr outside →cooling →sizing→ coarse correction → cut → straight tube

 

1.5 Rolling speed: 15 ~ 60 m/min. (select different speeds with different diameter and wall thickness)

 

1.6 High-frequency equipment Configured: 300KW (solid)

 

1.7 User configuration items: (for reference) (1) Machinery space occupied: 75 m × 5 m

 

(2) Electrical equipment space occupied: 7 m × 4 m

(3) Foundation requirement (see base map provided by supplier)

(4) 2 crane of 10 ton

(5) Power:

(a) Motor of the equipment: 110KW×2+45KW+18.5KW×2+15KW=317KW (b) High-frequency equipment: 400KW (solid)

(6) End-connected shearing machine and welder. (Market purchased)

(7) Blade used in tracking saw (according to the instructions, and the number determined by users)

(8) 1 magnet bar for tube welder (purchase according to tube size)

(9) 1 high pressure pump for cooling tube machine sets with the diameter of 3 inches and the head of 6 m.

(10) 1 cooling pond for tube machine with the volume of 35 cubic meters, tubes, valves, etc. (the type and the number determined by on-site installation).

(11) Circuit of the equipment. Lines must get into the distribution cabinet of plant room before reaching the equipment. Units must be connected to control sets and button station (the type and the number determined by on-site installation).

(12) 1 high-frequency unit which could be laid on the ground or loft. (13) 1 air compressor. (Market purchased)

(14) Equipment for the buyers to hoist equipment and tools to the factory. (crane, wire rope, etc.), the heaviest piece to hoist is 9 tons.

2. Description of major equipment

 

2.1 Hydraulic uncoiler :

Structure: bilateral feeding and hydraulic tensioner. Its role is to turn the volume to meet the alternative feeding of strip and to ensure the smooth entry into the looper.

Scope:

Strip width: 150 ~ 400 mm

Strip thickness: 1.5 ~ 5.0 mm

Internal diameter of coil: Φ550 ~ 600 mm

External diameter of coil: Φ1000 ~ 1500 mm

Coil weight: ≤ 3500 kg

 

2.2 Straight flattener

Its role is to open and flatten the coil for easy trimming and welding.

 

2.3 Shear welder: (market purchased by users)

Its role is to cut the head and tail of two strips, weld and flatten the seal.

 

2.4 Horizontal looper

Its main function is to store enough strip for the main machine before welding to ensure continuous production during the time of conveying strip.

(1) Structure: circular-plate weldment with automatic feeding and discharging devices.

(2) Storage capacity: 150-400m.

 

2.5 Host of forming, welding and sizing:

2.5.1 Feeding and leveler device:

The body is equipped with a seven-roll passive straightening and a pair of guide rolls, which are mainly for flattening the strip before entering the unit.

2.5.2 Host for forming:

Its main role is to shape the strip and control the weld.

A. Horizontal roll rack:

(a) Quantity: seven

(b) Structure: 45 # steel forgings, double-column gantry, side-out for roll. (c) Diameter of horizontal roll axis: Φ100mm, material 40CrMO.

B. Vertical roll rack:

(a) Quantity: nine

(b) Type: Passive transmission

(c) Diameter of vertical roll axis: Φ60mm, material 45 # steel.

C. Seven sub-power boxes

(a) Structure:

Spiral bevel gear leaves and cylindrical gear.

(b) Material: cabinet: QT50; spiral bevel gear leaves: 20CrMnTi; cylindrical gears: 40Cr; output and input shaft: 40Cr.

(c) Power transmission: 14 auto universal driveshafts.

(d) 2 installed bases (body)

2.5.3 Host machines of orientation, extrusion welding and planning scar: (a) 1 guide roller for the orientation of the weld.

(b) 1squeeze roller for the control to achieve desired weld.

(c) 2 outside weld planer frame, for outer tube burr gelling.

(d) 1 installed base (body)

2.5.4 1 set of cooling water.

2.5.5 Host machine of sizing:

Mainly for the accurate shaping of steel tube and controlling the size.

(a) 5 horizontal roller racks, 5 vertical racks, 5 sub-power boxes (double) and 10 cardan shafts. (Structure resembles forming the host)

(b) Rough straightening device:

It is mainly for the coarse straightening of fine-molded steel.

Structure: 2 sets of vertical straightening module with four roll (unilateral).

2.5.6 Main transmission system:

This system is to transmit power through main motor and main reducer respectively to shaping host machine and sizing machine, and transmit again via power box to horizontal roller.

(a) Main motor: 2 Z4 series, 110KWDC 1000RPM

(b) Main reducer: 2 ZDY280-11.2 four shafts

 

2.6 cnc flying saw:

(1) Structure: PC tracked and automatic trimming.

(2) Thickness of Trimming: δ1.5 ~ 5.0 mm.

(3) Outer diameter of trimming: Φ48 ~ Φ127 mm.

(4) Length of trimming: 4 ~ 8 m.

(5) Trimming deviation: ≤ ± 3mm

(6) Trimming motor: second-stage AC 45KW

2.7 Rack for dropping tube: