Full Automatic Direct Forming Erw Pipe Making Machine 40m/Min cold rolled steel strip Pipe Production Machine

produce overview

F200x200 high precision high frequency welded pipe production line is mainly to product the square pipe size 70x70-200x200mm,thickness is from 4.0-12mm.This production line each unit equipment, full use of the domestic and foreign similar equipment, innovative design, full control with PC or computer control, advanced technology, convenient operation and maintenance, and reached the international level in the early ninety s, for the domestic leading level.

The main characteristics of the equipment:

In a very short period of time to finish the adjustment of the roller, extreme reduce the roller change time when replace the products, thus improve the efficiency and reduce the productive cost;

Due to the equipment adopts one set of combined mould, producing the different specifications of the tube, only need to adjust,no need to change,the roller savings rate at above 90%,thus reducing the cost of the roller;

With motor adjustment, decreased the input of tools and damage to equipment when change the roll, improve the service life of the equipment.

Due to structure of the composite roll,the point contact between the roll and strip instead of the original line contact,reduce the roll wear and improve the service life of roll.

Raw material, finished product, process, and user configuration profile

1,Raw Material Conditions:

Hot rolled or cold rolled steel strip (meet GB700-88,GB1591-88)

Yield strength of raw material:σs≤345Mpa

Tensile strength of raw material :σb≤560 Mpa

(3) Thickness of strip:

square pipe Thickness 4.0-12mm(符合GB708-88)

(4)steel strip width:270-800mm(±0.2mm)

(5)steel coil inner diameter:Φ508-Φ760mm

(6)steel coil out diameter:Φ1100-Φ2000mm

(7)max coil weight:16TON

2,pipe size range

(1)square tube: 70x70—200x200mm

(2)product thickness:

square and rectangular pipe:4.0-12mm

(3)length:4-12M

(4)speed:20-40m/min

(5)2000KW 380V 50Hz 3 PHASE

3,product process

Raw material (strip) -loading car--- uncoiler - Cutting and Welding- feeding - Storage material - passive leveling - forming rolling--high frequency welding -- remove the weld burr -----cooling --sizing-- coarse straightening - length cut - collection

1. The buyer should self-supply

Forming & Sizing Mill

Consist of Feeding roller, Automatic centering device,Passive leveling stand, Horizontal roll stand (P1), Vertical roll stand (L1),Horizontal roll stand (P2),Vertical roll stand (L2),Horizontal roll stand (P3),Horizontal roll stand (P4) , Vertical roll stand (L3),Horizontal roll stand (P5), Horizontal roll stand (P6), Horizontal roll stand (P7)Vertical roll stand (L3), Three frame of empty curving, welding direction, five roll extrusion, burr cut, burr removal system two stand, rolling light stand, cooling system, sizing vertical roll stand (DL1), four roller stand (F1), four roller stand (F2),4 roller frame (F3), four roll frame (F4), Turks head (C2), electrical control system, etc

1) Feeding the Horizontal roll

Mainly to upper and lower limit of strip steel, easy for strip out of the loop smoothly into the forming machine, prevent strip bobbing up and down.

Consists of a pair of roller and left and right bracket, the roll material is GGr15, high frequency quenching process, the left and right bracket is the steel plate welding structure

2) Automatic on the device

Mainly to left and right limit of steel strip, to guarantee the accuracy of the strip steel smoothly into the machine, by two pairs of roller, roller frame around, slide, motor reducer, and other components of the adjusting screw, the roll material GCr15,high frequency quenching process.About bracket for steel plate welded structure

Open and close range 300-800mm

Centring Motor:Cycloidal reducer Each one for left and right side

Centring roller diameter Φ100

Strip thickness:1..5-4.0mm

3) Passive leveler machine

Mainly to level off the steel strip ,for strip into the machine smoothly, prevent strip bobbing up and down.Using upper 2 lower 3 five roll type structure, the above two roller can adjust by motor turbine worm reducer alone respectively,to control the clearance of the upper and lower roller, ensure leveling effect.leveling roller material GCr15,high frequency quenching process.

Leveling range 100-400mm

Leveling thickness:1.5-4.0mm

Turbine worm reducer Two sets

4) Horizontal roll rack

Little edge real curved

In accordance with the requirements of synchronous free bending forming,the basic requirement of small edge forming has three points:

Side cannot be longer due to the bending tensile and waved and affect the welding production;

After the small edge turn into empty bend ,to guarantee in the empty turn R accurate shape;

Small edge always does not affect the bend Angle on the side of the big boundary when the final bending Angle of bent.

Structure: the little edge real curved divide 3 ways.Due to the above edge real bending length is shorter, 3 ways all adopt the horizontal roll.Bilateral deformation at the same time.From the first to third ways are upper and lower roll initiative.Three horizontal roller frame on each time has a three independent adjustment of roll, respectively installed on the upper and lower two horizontal axles, in the production of different specifications of the square and rectangular tube, two of the cantilever rack has the different position relative to the centerline of rolling, so need two cantilever rack opening and closing at the same time , adjust the frame of the opening and closing, respectively by two sets of frequency conversion motor with high precision turbine reducer drive screw rotation, screw and frame joint nut connection, so as to ensure that opening and closing adjustment, to ensure that the unit rolling centerline is changeless,two cantilever rack can around at the same time.Opening and closing ajustment,the upper roller can be individually do axial adjustment.

Big edge bending

structure:

The side real curved divide three ways.

Forming method the same as small edge,as bilateral deformation of frame structure at the same time, the same as the small edge forming frame;

5) Vertical roll rack

The first is in the transition between the two horizontal roller frame deformation;The second is to overcome the front one horizontal roll deformation after springback, and play a guiding role.Change specifications roll around on the rack to move, don't need to replace the roll, the discretion of the vertical roll adjustment by the electric device to drive the turbine worm up and down, the main purpose of the adjustment is, in the different specifications of the square tube and rectangular tube small edge is different, in order to make the vertical roll better positioning effect, high and low adjusting greatly solved this problem.

6) Three frame Empty curving rack

Empty curving rack is a diameter of 16 roll deformation rack, four roller under the horizontal position unchanged, upper roller has a  frequency conversion motor drive, upper roll two roller can adjust Angle separately.Vertical roll powered by a  frequency conversion motor, meet different pipe diameter in the case of silent empty curving effect is better,to guarantee weld constant extrusion welding position, not reverse.

Equipped with guide plate at the exit to the empty curving rack,to make the extruding roller opening a corner.

7) Guide roller frame

Guide roller frame is mainly control the size of the opening corner and the direction of the weld, the weld accurately into the extruding roller, to ensure the welding quality

8) Five roll extruding device

For five roller, two side roller can according to separate adjustment of the welding conditions.Upper depress roller has two pieces, besides can electric lift adjustment at the same time,also can manually adjust alone, in order to adapt to different welding conditions, two roller can also carry on overall lateral movement, when the center of the weld seam deviation,can do adjustment laterally through horizontal roll to meet the welding requirement.

9) Scraping welding frame

Scraping welding frame is mainly to extruding roll extrusion welding the weld by scraper, the leveling of the welding, scraping welding frame with two drag frame.Only a handful of at ordinary times, the other a spare, to ensure the production line smoothly welding head can up and down, left and right sides, rapid tool adjustment to ensure good welding quality, scraping welding frame adopts steel plate welding structure, welding head to the dovetail structure, material for cast steel, the reserved zinc spray device.

10) Tumbling frame

Main usage is to support steel pipe, reduce vibration, improve the quality of welding and cutting, and roller pressing on not completely cooling cutting surface, improve the quality of products.Structure for two roller,lower roller height unchanged,upper roller as manual lifting adjustment, according to the different specifications of products, the upper roller pressure adjustment to the appropriate value, to achieve the above purpose.

11) Cooling system

Cooling system was mainly will be fully cooled down after the welding of steel pipe, in preparation for the sizing, in order to prevent the finished product after cooling pipe deformation, mainly steel plate welded structure,above the liquid spray directly on the seam, again by the recycling pool recycle.

12) Four roll rack

Four roller rack is made of upˎdownˎleft and right of four horizontal roll crossing.The up and down roll with the power, respectively with two motor with reducer as power.The lower roller as fixed roller, the left side of the roller and the upward side of the lower side roller forming 90 ° vertical angle. Through four roll cross action, with engine base lateral translation, so as to realize the size changed of the square tubes, rectangular tubes

13)Turks Head

Combining SZ4 horizontal roller to adjust product of straightness.Roll position adjustment by frequency conversion motor accurately.

14) Transmission system:

Forming area each passed by an electric motor reducer through differential box input six stand horizontal roll forming rack respectively

Sizing area each passed by an electric motor reducer through differential box input four frame horizontal roll forming rack respectively