HG165×6.0mm Solid HF welded pipe mill line

Technical Parameter

1?Summary:

square and rectangular

pipe. Each machine on this mill line adopts the technology based on many scientific research achievem

ents at home and aboard, and we make some innovative design according to national condition. Not

only high automatic, convenient operation and maintenance, the design of our produced machines is

in leading position in China, the structure and precision of our machines is in the advanced level all

over the world.

2?Main parameters of our mill line

2.1 The size of output pipes:

Material:        Q195  Q215  Q235

Round pipe:                F76-f165mm                                                                                                                                    

Square pipe:      60×60mm—120×120mmand rectangular tube accordingly        

Thickness:                  2.0~6.0mm

Length:                             6~9m

Forming speed :      15~60m/min

2.2  The size of steel coils (Raw material)

Cold/hot rolled steel coils after slitting

OD of steel coils                    Ø1300~ Ø1500mm

ID of steel coils                      Ø570~ Ø 640mm

Width of coils                         235~520mm

Thickness of coils                      2.0~6.0mm

Weight of coils                          max10 mt

Material:  Normal carbon steel   s ?=400MPa

2.3 Welding

The method of welding                 Induction welding

Solid HF power      600KW

Welding speed                         15~60m/min

3?Technical process of production

Coil Loading-Decoiling-Strip threading machine-Shearing and end welding-Accumulating-

Forming-Welding-Water cooling-Sizing-Fly saw cutting into setting length

4? Machines Supply and Price offer(Rolls and moulds value are not included)

5?Brief introduction of main facilities (The following photos are just for reference, can not be the basis of checking)

5.1  Loading carriage:

Function: Load the steel coils, go liner movements, up and down

Carriage up and dowm method:               Hydraulic

Carriage moving method                 Motor-driven

Max coil weight                           10T

Coil OD                             1300-1500mm

Coil ID                              570-640mm

Width of coils                         235-520mm

Thickness of coils                       2.0-6.0mm

5.2     Uncoiler

Function: Double drum uncoiling actively

Walking type                             Hydraulic

Rotating type                                 Motor-driven

Brake mode:                                      Hydraulic

Coil OD                        1200-2200mm

Coil ID                         520-760mm

Width of strip coil                235-520mm

Thickness of strip coil             2.0-6.0mm

5.3  Straighten coil head machine

Function: Assist decoiler, level the strip coil and pinch the coils into Pinching and Leveling machine.

5.4  Pinching and Leveler

Function:  Hold down roll decoil the strip from coil, pinching roll level the decoiled steel strip.

Pinching roll diameter*length:         two rolls        Ø200*650mm

Leveling roll diameter*length:         5 rolls          Ø160*650mm

Material of roll:                          42CrMo

Hardness of roll surface                HRC48°-52°

Pinch & leveler gearing type           Motor-driven

(Decoiling, Straightening head, leveling)

5.5  Shearing and welding

Function: Hydraulic pinch and center steel strip head. Shear and weld automatically, CO2 protection welding.

5.6  Feeding roll

Function: Feed the steel strip into accumulator

Feeding roll diameter* length               Ø170*650mm

Feeding roll driven type:                   Motor-driven

Motor Power:                                  75kw

5.7  Spiral accumulator

It is used for accumulate steel strip, so that provide steel strip to the mill line continuously even when the coils are in the course of two coils' head-end shearing and welding.

Storage capacity                        400-600m

Feeding speed                                 15-300m/min

Motor for Pinching           Z4-225-11  75KW one motor

Motor for accumulating         Z4-200-31,55KW     two motors

5.8  Forming stands

Function: Bend the steel strip into required section shape.

Number of horizontal roll stands                  8 stands

Number of vertical roll stands                    8 stands

Diameter of horizontal roll:  Ø120mm Material 40Cr  Refining treatment

Gearing side bearing 3522, two sets; Operation side bearing 292222, two sets

Horizontal stands                             Material ZG35

Vertical roll diameter:      Ø70mm material 42CrMo refining treatment

The bearing adopt 7514

Vertical roll base                             Material ZG35

Horizontal roll bottom diameter:                Ø230mm

Forming speed                            15-60m/min

Gearing motor power    Z4-250-42  160KW  1? one set

Rolls arrangement:JZ   WPL  1CP  2CP  3CL  4CP  5CL  6CP  7CL  8CP  9CL  10CL  11CL  12CP  13CL  14CP  15CL  16CP  HD  HJ  HB1,2  HM  KL  SL  1DL  2DP  3DL  4DP  5DL  6DP  7DL  8DP  9DP  DZJ1  DZJ2

JZ — Five rolls leveling, idle; WPL — Feeding roll,vertical;

CL — Forming rolls, vertical;  CP — Forming rolls, horizontal

HD — Guide stand;  HJ —Squeezing stand(four rolls squeezing);

HB —Outer bead cutter;  HM — Polishing stand;  KL — Air cooling roll table;  SL — Water cooling tank; DL — Sizing roll, vertical;

DP —Sizing roll, horizontal;  DJZ —  Turks head

5.9  Welding device

Function: HF weld the formed strip into closed pipe and cut the bead.

This device is consist from two-roll guiding stand, four-roll squeezing stand, outer bead cutter and two-roll pressing stand.

Little guide bearing: 7518; Squeezing roll bearing: 7520

5.10   Cooling tank

Cooling length:                              3000mm

Cooling method:                             Spraying

5.11  Sizing stand

Function: Adjust the roundness and diameter of pipes into required condition

Horizontal roll stand:                       5 stands

Vertical roll stand:                              4 stands

Four-roll straightening stand:                  2 stands

Speed                                  15-60m/min

Power of motor for gearing            Z4-250-42  160KW   One set

5.12  Gearing:

It is consist from main reduce-speed box and gearbox.

Main reduce-speed box adopt ZLY mode speed-reduction, gearbox take arc-umbrella gear, SZ325Z, work together with ZSY280Z(L)that speed rate I=23.66. The material of gear is 20CrMnTi, forging stock, refining. The speed rate of main reduce-speed box is I=1:1/1:1.73 , SZ325BS, two speed gear, three sets.

Gear shaft use autocar drive shaft.

5.13  Computer flying saw

Function: Cut the continuous pipe into required length

Method:                           By FS cutting-off machine

The accuracy of length:                0-6mm

Length:                           6-9m

Transmission gear:               Modulus: 6;  Number of teeth: 24

Reduce-speed box:                    Speed rate: 6.3

Cutting saw blade length:               4500mm

Cutting saw blade width:               1000mm

Plate thickness:                     30mm

Plate thickness of gear-rack base:        25mm

Motor for cutting:                   37KW, AC motor

Motor for dragging:                  45KW, DC moter, 1500 revs per min

5.14  Runout conveyor

Function: After cutting, transfer the pipe to bundling machine

5.15 Pipe bundling machine

Function: Line up the pipes and bundle the pipes into square or hex shape.

Pipe size:   F76~F165mm or size of square pipe accordingly

Pipe length:                               6-9m

6?Delivery

Four month after this contract coming into effect

7? Power parameters:

Voltage: AC 380V, threephase

Power: AC 220V , DC 24V

Frequency: 50HZ

Installed capacity: 1100KW

8?When this contract come into effect, following technical papers will be provided

8.1 Operation and maintance manual

8.2 Blueprint of total and parts drawings

8.3 Hydraulic system blueprint

8.4 Electrical system blueprint

8.5 Mill fundation drawing