High Frequency Welded Pipe Mill Round Square Rectangular High Frequency Tube Mill Resistance Welding

 Main Parameters and Specifications:

• Material Specifications:

Conforming to the YB189-64 standard

Material : Low carbon steel and low alloy constructional steel

Mechanical properties: σb≤520Mpa,σs≤365MPa

strip width:160～400mm

strip thickness:1.5～4.5mm

Inner Diameter of Coils:φ508～φ610mm

Outer Diameter of Coils:φ1500～φ2000mm

Coil Weight:≤10.0T

• Welded Pipe Specification

Round Pipe Diameter :φ40～φ127mm

Square pipe size:40×40-100×100mm

 Round pipe thickness:1.5～4.5mm

Square pipe thickness:1.5- 4.5mm

Finish pipe length:4～12m

Cut accuracy:±1.5mm

Forming speed:75X45—80m/min；100X100—60m/min

Power, Water & Air Supply

• workshop require::

6m wide, 100m long, at least 5m high from Ceiling Rails to Ground.

• Product process:

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

• Main parameters of each unit.

•  double cone Hydraulic Uncoiler

The uncoiler is of the structure of one cone. It contains two main parts: main body and the fixed 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 motor power :AC1.5KW

processing pressure:7Mpa

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

pinch roll diameter:Ф180mm

leveling roll diameter:Ф120mm

pinch and leveling motor:15kw

• automatic shear and welder

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

• horizontal accumulator

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

 feeding 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.

(2)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.

(4)technical parameters

working style: fixed circle

diameter :5.0M

advantage: storage more material,no strike to strip steel suface

steel coil thickness:1.5-4.5mm;

width:160-400mm

carry material going velocity:Vmax=120m/min

directly electric motor power of the press & carry:30KW

the electric motor of the accumulator frame : 55KW

• 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

forming speed:75X45—80m/min；100X100—60m/min

finish round pipe diameter:40-127mm

finish round pipe thickness:1.5-4.5mm

finish square pipe size:40*40-100*100mm

finish square pipe thickness:1.5-4.5mm

main motor: DC 160KW+160KW

Forming part:

The steel strip through the feeding vertical roll into five roll flattener then go into the forming stand,and in the forming part into a round shape.

Weld seam guide stand and the squeeze roll stand,welding bead cutter:

squeezing roller is to squeeze the edge of the tube which has been heated to welding temperature, by squeezing rolls giving a certain pressure to achieve welding purpose.

Welding bead cutter is used to scrap weld seam and remove external burr. It is made up of two cutters for using alternately. If one is damaged, the other one will take the place to scrap. Scrapers can be adjusted and have the quick lift function by cam. There are two supporting roller underneath knife rest, in order to bear the overdraft of scraping.and after the bead cutter with one horizontal stand for polishing.

 Water cooling unit:

material:steel plate welding

Sprap pipe: plastic

sizing part

The round pipe after sizing part into the require diameter and shape

• cold saw

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

Round pipe diameter:Φ40-130mm,thickness:1.2-5.0mm,Q235 OR below grade.

• Transit table

After cutting,the finish pipe running on the transit table,then use the automatic unit make it into stack desk

•  Automatic stacking machine

1 technological process

Double blanking on roller table → automatic stacker → lateral transport trolley → manual binding

2,Equipment composition and function description

 Equipment composition

• 模具 :材质 Cr12