Main technical specification
1,Material: HR/CR carbon steel or galvanized steel coil
2,Finished products requirements:
Round pipe:φ20~φ76mm
Square pipe:15x15~60x60mm
Rectangle pipe :20x10~80x40mm
Thickness:1.0~3.0mm
3,Place requirement
Place form:split layout style;
Lay out type: input , side output(look from main console, decided by customer);
Machine design production speed: 0~80m/min;
Power: 380V 50Hz
Technology procedures
Uncoiler→shear&end welder→horizontal accumulator→leveling→ forming→HF welding→scraper→cooling→sizing→ straightening →flying saw cut off →run out table.
Main specifications of welded pipe production line
1,Uncoiler
Structural style:hydraulic expansion rolls,double rolls;;
Coil inner diameter:φ508mm
Coil outside diameter :≤φ1800mm
Coil width:60~240mm
Coil weight per roll:≤ 4 tons
Braking model:pneumatic,degree of strength braking
Station conversion style :auto pushing 180°
Butt shear& welding machine (TIG)
Function: 1.cut off the bad part at the end and head of the steel coil, also the middle part of the coil;
- cut head and end before welding, make sure the welding terminal flat and straight which is good for welding;
Structure style: hydraulic cutting plus automatic welding(TIG);
Steel coil mutual-seam style: manual;
Cutting thickness:1.0~3.0mm
Max cutting width: 240mm
Blade material: T12A
Blade quantity: 3
- Horizontal accumulator
Horizontal accumulator: directed by the outside accumulator, central supplying
Accumulator diameter: φ 4.5 m
Coil width:60~240mm
Coil thickness:1.0~3.0mm
Feeding speed:120~200m/min
Structural form: reversing stand, pinch feeding structure (11kw AC speed-adjust motor), main body of accumulator (15kw AC speed-adjust motor).
3,Forming and sizing section
3.1Feeding device
Vertical guiding roller:behind leveling roller, there is a couple of vertical guiding roller, which regulates open and closing and centering through manual operation;
Leveling roller:with 7 rollers leveling device to enter forming machine steadily;
Leveling rollers are powerless ones with down rollers fixed and up rollers up-down regulating through first-run guide screw;
3.2Forming stands
This mill adopts base line horizontal roller forming principle with double radius holes style of rollers;
Forming requirements:
Round pipe :φ20~φ76mm
Thickness:1.0~3.0mm
3.3Forming stands specifications
| Stand |
quantity |
diameter |
material |
shaft heat treatment |
| Horizontal |
7 |
Φ70mm |
42CrMo |
HF tempering quenching |
| Vertical |
9 |
Φ45mm |
42CrMo |
HF tempering quenching |
3.4Forming stands structural requirements:
3.4.1Set a group (2 stands) vertical group stand before the back three-path flatten roller stand, avoid the pipe blank surface scratching;
3.4.2Above every opening forming horizontal stand, namely the top of bearing, there is an overloading protection device while encountering overloading, a cushion protects horizontal roller and gearing device without changing new cushion;
3.4.3Portal horizontal roller , and:
Rough forming: 4 stands, Fin pass :3 stands
3.4.3Chute vertical roller, double guiding vertical rollers, manual regulate simultaneous open and closing and centering with up-down adjustable structural rollers;
3.4.4Way of changing roller:side pull;
3.4.5Up roller regulation:left and right separate adjustment;
3.4.6Stand lubrication:at the back of horizontal rollers stand, applies oil gun with lubricating nipple.
4, Welding equipment (mechanical part)
4.1.Welding seam guiding stand:(1 set)guiding roller is made up of up and down 2 rollers,in the middle of which installs blade ,welding seam angle is regulated by screw;
4.2.Welding squeezing roller stand:(1 set)three rollers type, squeezing rollers squeeze melt metal and weld together;
4.3.Side squeezing roller diameter:φ45mm;
4.4.Outside rag-off device (1set)installs alternative front-back cutting tool, hand wheel regulates the height and horizontal position with pneumatic fast feed device ;
4.5.Down holding part:held by hard wood with adjustable height, being able to guarantee the smooth and flat welding seam;
4.6.Polishing roller stand:(1 set)vertical roller with manual operating open and closing and centering;
4.7.Cooling device:combine spraying and run-off pit.
5,Sizing stands
5.1Sizing requirements:
Round pipe:φ20~φ76mm
Square pipe:15x15~60x60mm
Rectangle pipe:20x10~80x40mm
Thickness:1.0~3.0mm
5.2Sizing stands specifications:
| Stand |
quantity |
diameter |
material |
shaft heat treatment |
| Horizontal |
6 |
Φ70mm |
42CrMo |
HF tempering quenching |
| Vertical |
6 |
Φ45mm |
42CrMo |
HF tempering quenching |
5.3Sizing stands structural requirements:
5.3.1Way of changing roller:side pull;
5.3.2 Up roller regulation:left and right separate adjustment;
5.3.4 Shute vertical roller stand,manual operates simultaneous open and closing and centering , equipping with up-down regulation device;
5.3.5Stand lubrication:at the back of horizontal rollers stand applies oil guns with lubricating nipple;
5.4Turkey head straightening device
Function: straighten the steel pipe's flatness, lead the steel pipe right into the flying saw, also can adjust the diameter of the square and rectangular pipe;
Structure: four roller turkey head, up-down,left-right and rotate adjustment separately;
Quantity: two sets single side turkey head stands;
Pipe diameter:φ20~φ76mm
Pipe thickness:1.0~3.0mm
6,Flying saw
Form:microprocessor sizing flying saw;
Purpose:1. make sure of cutting position of sizing,is capable of fast starting to keep same phase between cutting equipment and production line;
2.keep same phase between cutting equipment and production line,cut pipes by means of cutting structure move;
3.fast resetting;
Control method:flying saw is driven by microprocessor controlled by motor through gear wheel of speed reducer;
Cutting form:hot friction metal cut saw;
Cutting diameter:φ20~φ76mm
Cutting thickness:≤3.0mm
Cutting tolerance:±3mm
Sizing length:4~8m
Cutting blade Spec:φ550
Cutting motor:18.5kw
Tracking motor:18.5kw
Pneumatic system:0.4~0.7Mpa
7,Run out table
Holding stand structural form:section steel welded structure;
Roller stand height:consistent with pipe rolling and center run out table;
Carrier rollers are plain-barrel ones,material:steel 45# quenching hard chrome-coated with long working life and without scratching pipe;
Power of roller:3kw motor to drag which can satisfy different production speed.
8,250kw solid state welder(pulse shielding technology)
Using pulse shielding technology, high power factor, low harmonics, low debugging and maintenance skills, fully digital control, and good maintainability. Ethernet communication and optical fiber connection can save energy by 10%-15% compared with traditional high frequency.
Design Parameters
Nominal power:250kW
Rated DC power: Pd=250kW
Rated DC voltage: UdN=450V
Rated DC current: IdN=550A
Overall efficiency: η≥85%
Design frequency: f=300~350kHz
MOSFET inverter: 62.5kW×4
| Description |
Composition/model |
Qty. |
|
| 250KW HF welder(one unit) |
solid state HF integrated welder |
1 |
| Console(with PLC) |
1 |
| 2-D positioning table |
1 |
| Air-water cooler |
1 |
| DC drive |
|
2 |
Transmission system
The whole system adopts separately transmission between forming mill and sizing mill, each system drags horizontal roller through speed reducer, gear box and universal drive shaft. Vertical rollers are powerless ones. Gear box material is 20CrMnTi;
Main motor:90kw+110kw
Gear box lubrication:immersion lubricating;oil level appears outside the box;
Water pipe location:whole mill prepares the entrance of cooling water, in the middle of each roller installs adjustable metal cooling pipe spray head, flux of cooling water:≥15 tons/hour.
Our Company
Zhangjiagang Zhongyue Metallurgy Equipment Technology Co.,Ltd is located in Xiangshan Road,Jiangang Town,Zhangjiagang City,Jiangsu Province,China.With the registered capital of RMB20,000,000 yuan,the company specialize in manufacturing high-frequency precision welded pipe lines,H-Beam steel pipe line,slitting machine,cold roll forming machine,cold rolling machine,angle steel machine,cold cutting saw machine etc...At present,the annual production capacity is more than 150 sets.
During more than ten years of continuous effective development, the company has already become quite well competitive in term of market share,technology,human resources and geographical location in its field.To maintain its competitiveness in the ever fierce competing market, the company has kept upgrading itself by improving innovation system ,establishing human resources platform, building harmonious relationship with customers,improving quality of product and full-range of services.Hence,now,as one of the most popular and favorite vendors of our customers,we are the most advanced and play a leading role in field of domestic market for product quality and achievement in new products R&D and market development.
The company products are widely applied in the industries of welded pipe manufacturing,sports products,fitness equipment,medical apparatus and instruments,children's goods,furniture,household electrical appliances,vehicles,ship building,petroleum transportation and power station etc...
Zhangjiagang Zhongyue Metallurgy Equipment Technology Co.,Ltd is located in Xiangshan Road,Jiangang Town,Zhangjiagang City,Jiangsu Province,China.With the registered capital of RMB20,000,000 yuan,the company specialize in manufacturing high-frequency precision welded pipe lines,H-Beam steel pipe line,slitting machine,cold roll forming machine,cold rolling machine,angle steel machine,cold cutting saw machine etc...At present,the annual production capacity is more than 150 sets.
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