ZTF forming process

 ZTF forming process

I. What is ZTF?
ZTF is a kind of forming technology developed by Zhongtai Company in 2005, which  absorbed advanced technology from both domestic and international, and then earn “Technology Innovation Award” by China Cold Forming Steel Association.
ZTF Characteristics:
1) Do not need to change moulds in breakdown section, saving about 60% cost on the rolls
2) Roll changing time is cut down greatly, breakdown section does not need to change moulds and just adjust is ok. And it can cut-down producing period.
3) Release labor intensity.
4) Roll forming technology, the caliber is different and propitious for X70,N80 steel strip.
5) The steel strip is distorted and beared more reasonably, to reduce the rub between the strip and roller, and also reduce the waste of the roller.
6)It is easier to restore and adjust roller.
 II. Where is ZTF used?
 ZTF technology is used in breakdown section and only suit to produce round pipes.
 III. What is breakdown section and what is fin-pass section?
Normally, we part the mills as forming section and sizing section.
The section before guild-frame is forming and the rest part is sizing section.
For ZTF, we divide forming section into breakdown section and fin-pass section. The part after the unit of vertical rolls is fin-pass section and before is breakdown section.
 VI. The development of ZTF technology
 The Comparation Among Four Generations of Our Pipe Forming Technology
  “ZTF-1”, “ZTF-2” , “XZTF-3” and “XZTF-4”

Technology

ZTF-1

ZTF-2

XZTF-3

XZTF-4

Adjustment Method

Manual

Manual

Electric

Electric

Rolls in Breakdown section

Basically Common Use

Fully Common Use

Fully Common Use

Fully Common Use

Structure and Adjustment of

Rotating Horizontal Rolls

No Horizontal Rolls

Manually adjust the rotating, opening & closing and lifting of upper rolls, the lower rolls opening& closing on the shaft. Manually adjust quick release or adjustable mats.

Electric adjust the rotating, opening & closing and lifting of upper rolls , tilting lower rolls opeing& closing on the roll seats. Electric adjust the the space between rolls which is controlled by screw.

Electric adjust the rotating, opening & closing and lifting of upper rolls.  Computer adjust the tilting of the lower rolls opening& closing on the roll seats, the space between rolls which is controlled by screw

Structure and Adjustment of Swiveling Vertical Rolls

Manually control the adjustment for the opening & closeing, lifting and rotating of the special curve rolls.

Manually or electromotion control the adjustment for the opening & closing, lifting and rotating of the special curve rolls.

Electric control the adjustment for the opening & closeing, lifting and rotating of the special curve rolls.

Computer control the adjustment for the opening & closeing, lifting and rotating of the special curve rolls.

Adjustment of Other Rolls in Roughly Forming Section

Rollers shall be replaced when producing new size of pipe.

The rolls open and close on the shaft, manually adjust the quick release and the adjustable mats, the lifting the upper rolls.

The rolls open and close on the shaft or roll seats, manually adjust the space between rolls which is controlled by screw, the lifting of the upper rolls.

The rolls open and close on the shaft or roll seat. Electric adjust the space between rolls which is  controlled by screw. Computer adjust the lifting of the upper rolls.

Micro-adjustment Device for Side Vertical Rolls in Final Forming and Sizing Section

N/A

N/A

Yes

Yes

Adjustment for Rolls Position

Manual

Manual

Manual

Computer

Request for Electronic Control

Low

Low

High

Higher

Accuracy of Rolls Position Adjustment

High

High

Higher

Higher

Operation Site of Rolls position Adjustment

Inside the stands

Inside the stands

Outside the stands

Outside the stands

Deformation of the Pipe Blank Edge

Good

Good

Better

Better

The Formation for High Rrecision, High Steel Grade and Thick Wall Pipe

Good

Better

Better

Better

Accuracy of Pipe

High

High

Higher

Higher

Labour Intensity

High

High

Low

Very low

Time for Replacing Rolls

Long

Short

Short

Short

Online Adjustment

Normal

Normal

Good

Good

 

Model

Round pipe

mm

Square pipe

mm

Thickness

mm

Working spead

m/min

 

ERW114

Ф48-Ф114

40×40-90×90

1.5-4.5

65

Read More

ERW140

Ф60-Ф140

50×50-110×110

2.0-5.0

60

Read More

ERW165

Ф76-Ф165

60×60-130×130

2.0-6.0

50

Read More

ERW219

Ф89-Ф219

70×70-170×170

2.0-8.0

50

Read More

ERW273

Ф114-Ф273

90×90-210×210

3.0-10.0

45

Read More

ERW325

Ф140-Ф325

110×110-250×250

4.0-12.7

40

Read More

ERW377

Ф165-Ф377

130×130-280×280

4.0-14.0

35

Read More

ERW406

Ф219-Ф406

170×170-330×330

6.0-16.0

30

Read More

ERW508

Ф273-Ф508

210×210-400×400

6.0-18.0

25

Read More

ERW660

Ф325-Ф660

250×250-500×500

6.0-20.0

20

Read More

ERW720

Ф355-Ф720

300×300-600×600

6.0-22.0

20

Read More


Post time: May-29-2018
WhatsApp Online Chat !