Construction High Frequency Hf Tube Mill 38.1mm Welded Pipe Production Line

HG65 High-Frequency Welded Pipe Production Line

HG 65 High-Frequency Welded Pipe Production Line is designed to produce welded pipes of round pipe φ38.1-φ63.5mm ,thickness 3.5mm, and deformed pipes of the corresponding size. Adopting roll pass design, the production line can manufacture welded steel pipes with good quality machining and high precision assembling.

According to the designing guideline of improving the operating character & environment and the safety & producing character , reducing the cost of the roller to guarantee high efficiency, HG38 production line adopts the double-radius hole style of design .

• Main Parameters and Specifications:

• Material Specifications:

(1)Conforming to the YB189-64 standard

(2)Material : Low carbon steel and low alloy constructional steel

(3)Mechanical properties: σb≤520Mpa,σs≤365MPa

(4)Strip Width:120-200mm

(5)Strip Thickness:3.5mm

(6)Inner Diameter of Coils:φ480～φ520mm

Outer Diameter of Coils:φ1000～φ2000mm

Coil Weight:≤5T

• Welded Pipe Specification:

• Round pipe :120-200mm 3.5mm

(2)Fixed Cutting length:4-12m

(3)Pipe-cutting Precision:0-3mm

• Forming Speed:20-60m/min
• Power, Water & Air Supply

三,Process for the production line

Coil Loading → Uncoiling →Cutting and Welding →Horizontal Spiral Accumulator → Forming, HF welding, Deburring, Cooling, Sizing, Straightening →STD Cold-cutting saw →Transmitting → Packing → Storage

四,Each machine parameters

1. Uncoiler

double cone Hydraulic Uncoiler

The uncoiler is of the structure of one cone. It contains two main parts: main body and the fix

ed base. The main body is equipped with pneumatic system to satisfy the needs of expanding, contracting and braking of the mandrels.hydraulic expanding and Pneumatic driving

• Straight head and pinch leveling machine

This unit is main used to lead the new coil steel head feed into the flattener unit after uncoiler unit bring the coil into the working place.

straight head:Hydraulic

processing pressure:12Mpa

The leveling unit with 2 roll pinch and 5 roll leveling.

pinch roll diameter:Ф180mm

leveling roll diameter:Ф120mm

pinch and leveling motor:11kw

• Automatic shear and welder

is used to cut the irregular ends of the strips and then connect the strips by welding.

• Spiral Accumulator

This unit is main include in press& carry material device, accumulator assemble, carry off material unit, electric control unit.

press & carry material device:It is main include frame, electric motor, brake unit, circling direction transfer power axle of the reduce velocity, press & carry roll, pressure air system of guide roll, inspected velocity unit; it can supply the strip steel to accumulator and the mean times it will transfer the carry velocity information to electric control system, when we demand stop carry the material to this unit, it will stop roll to the electric motor and press& carry material roll by the break, and also could adjust the velocity to carry electric motor and the unit carry material velocity.

Accumulator frame assemble: include the electric motor, frame , inner circle roll, out circle roll and pressure roll. It can be used to storage the strip steel material from press& carry unit and it could be draw from the center send-off material roll.

Send-off material device: include frame, guide direction rolls, guide out roll of high or lower place. It can carry the strip steel to shape system and send the carry out material velocity information to electric control device.

technical parameters:

wworking style: change circle diameter:4M

advantage:storage material more, no strike to strip steel surface.

steel coil thickness:3.5mm;

width:120-200mm

carry material going velocity:Vmax=200m/min

hydraulic oil pressure:7Mpa

directly electric motor power of the press & carry:15KW

the electric motor of the accumulator frame : 22KW

• Forming & Sizing Mill

Forming & Sizing Mill adopts roller type forming principle and high-frequency induction welding. The strip is fed into the forming machine by the feeding device in the mill and the forming roller continuously rotate and press the strip into the required shape. Due to the skin and the kindred effect, the high-frequency current is concentrated on the weld joint that is heated rapidly and reaches the welding temperature. The tube seam is welded under the pressure of squeeze rollers. The finished welded tube with required size can obtained after the cooling, sizing and primary straightening.

• Cold Saw

It is used to precisely cut the pipe to length automatically under the condition that the pipe continuously delivered from the mill at high speed.

Drive motor: 15KW servo motor (Japan Yaskawa);

Cutting motor: 15KW variable frequency,Siemens

Feed motor, servo motor 2.9KW (Japan Yaskawa)

• Roll Table, Bench & Packing Machine

The finished pipes run along the Roll Table and to be automatically moved onto the Bench. Then simple Packing Machine packs the pipes in hexagon shape. The simple packing machine contains container and pneumatically driven alignment equipment.

Motor of Roll Bench: 4KW.

· 250KW High frequency Solid-state Welder