HGF200x10 DFT Tube Mill Line

Hydraulic double-cone uncoiler with Coil peeler and coil car

Double-cone hydraulic clamping with peeler. Peeler with pressure roller, drived by motor. Uncoiler cone can hold the strip coil in the function of oil cylinder. Then the pressure roller down pressed steel coil, the cone rotating, the bucket swing lifted and snapping the steel coil. When the head of the coil rotated to the place of bucket, the bucket can shovel and level the coil.

Five-roll Leveller

There is a pair of pinch roller. Leveling rolls are arranged for two top and three below. Pinching is pressured by hydraulic cylinder, leveling roll motor is cogged by worm wheel and worm screw reduced speed, the worm screws in front and one in back can come true be in-phase by sleeve connecting, which can ensure top leveling roll and under leveling roll be parallel, thereby which reach in the intention of flatten.

Hydraulic Shear&butt welding machine

It is used to parallel cut the trail of the strip, which has just gone into the accumulator, and the head of the strip coming out of uncoiled, and then weld them together.

Spiral accumulator (O.D.: 10m)

Spiral accumulator is used to receive strip steel discontinuously from uncoiler and at the same time provide the steel strip to forming unit continuously.

The capability of reservation can be controlled by spiral parallel. The circumference difference of outer and inner parallel multiply by number of parallel is the capability of reservation.

There are guide roll supporting stand and torsion area in front of spiral accumulator. Steel strip will be turned from horizontal state to vertical state. Guide roll supporting stand is made up of carrier frame and holder and two pinch rolls, pinch rolls can alter strip steel from horizon state to vertical state. 

forming and sizing mill

The mill adopt the technology of direct forming to square, which has the advantages of stable forming, good quality of pipe surface and convenient changing product specifications. The forming mill is divided into two parts: break down part and fin pass. Compared with the technology of round to square, this process saves 30-70% of rolls, realizes the sharing of rolls and electric adjustment, saves the time of roll change and adjustment, improves the operation rate of the mill, and greatly reduces the equipment investment and spare parts reserve.

The mill is innovative in design, the forming technology ranks the leading level in China, and the mill will further optimize the direct forming square technology, so that the stress state of the steel strip in the deformation process is more reasonable. Meet the process requirements of welded pipe products, easy operation and maintenance, save investment, economic and practical.

The mill consists of forming mill (break down part, fin pass), high frequency welder, cooling device, sizing mill and transmission device etc.

Solid State High Frequency Welder(GGP800KW) 

①Designed parameters

l   Nominal power: 800kW

l   Rated DC power: Pd=960kW

l   Rated DC voltage: UdN=450V

l   Rated DC current: IdN=1400A

l   The whole efficiency: η≥85%

l   Output power: Pout＞800kW

l   Designed frequency: f=150~250kHz

l   MOSFET inverter: 120kW×8

Tank circuit output mode: no welding transformer output, secondary resonance

Rotary Milling Saw

This mill is a high-tech project synchronized with the most advanced technology abroad. The saw not only has high-speed sawing motion, but also can travel on the set trajectory according to the different cross-sectional shapes of the part being cut. The entire system is controlled by a computer and has AC servo speed control systems. Adopt foreign advanced control unit. This makes the control precision high and the operation stable.

Structure type: Double saw blade, milling type

Control system: AC servo and Servo

Equipment composition: Basement, saw car, drived system, large disk rotation system, double saw blade sawing, feed system, clamp, roller device, speed measuring device, cooling system, hydraulic system, operating table, computer, speed control cabinet, photoelectric coding device;

Run out table

Function: deliver the pipe after cutting and drive it to oblique stand to ensure the delivering smoothly.

Mode: roller group consist of many single roller, rollers and rollers with motor cross layout. With poker  and pipe stopper

Full Automatic Packing Machine

The automatic steel pipe stacker is used to automatically complete the collection and stacking of the steel pipe at the end of the steel pipe production line, which automatically runs smoothly, reduces the manual labor intensity, improves the automation of the production line, effectively improves the production efficiency. At the same time, the steel pipe collision and knocking noise is eliminated, the bump is removed, the product quality is improved, the production cost is reduced, and the safety risks are eliminated.

The equipment is based on the automation needs of the existing domestic pipe mill line, absorb the advantages of similar foreign equipment, independent innovation design. The machine has advanced technology, safe and reliable equipment, compact and reasonable structure, mature and perfect technology, convenient operation and maintenance.

Roller

Material:                 Cr12MoV  

Hardness of roller:          HRC58-62

Deepness of quench hardening: ≥ 10mm

Roughness of surface:        Ra≤0.8um