Payment & Shipping Terms:
Low Carbon HRC|
63mm welded tube mill machine
,straight electric welded tube mill machine
,3.0mm high frequency welded pipe mill
2.1 Steel pipe specification
φ25—φ63mm Thickness: 1.5 - 3.0mm|
20X20-50x50mm Thickness:1.5 - 3.0 mm|
2.2.1 Strip steel width: 80mm-200mm Strip steel thickness: 1.5mm-3.0mm
2.2.2 Low carbon steel and low alloy steel: δb≤500Mpa σs≤235MPa
2.2.3 Steel strip coil: Inner diameter: Φ550-610mm (buyer confirm finally)
2.2.4 Outer diameter: 1000mm-1800mm (buyer confirm finally)
2.2.5 Steel strip weight: Max 3.5T
2.3 Electric installed capacity: approximately 400KW Power supply: 380V, 50Hz (According to Local)
2.4 Forming speed: Max. 90m/min
2.5 Size of the whole line: Approx. 60X6m
Scroll up → Uncoil → Cutting head, tail → Strip Steel head-tail butt welding → Spiral accumulator
→ Forming → High frequency induction welding → Removing external burr → Sizing → Cutting
→ Checking& collecting → Weighing → Marking → Accessing Warehouse
IV. Equipment makeup and main parameters of single unit:
This equipment has double-cone hydraulic clamping. The uncoiler cones head clamp the steel coil with the function of cone moving cylinder. Then press roller of the end opener moves down to tighten steel coil. The uncoiler cone rotating, the end s opener peeler swings up and close to the coil. When steel coil head rotate to the peeler, it will shovel the coil head and flatten it.
Inner diameter of the strip steel:Φ 550-610mm
Outer diameter of the strip steel:Φ max=1800mm Strip steel width: 80mm-200mm
Strip steel thickness: 1.5mm-3.0mm
The maximum weight of the strip steel: 3.5T
It is used to parallel cut the tail of the steel strip, which has just gone into the accumulator, and the head of the strip coming out of uncoiler, and then weld them together.
Hydraulic Shearing and manual welding Strip steel width: 80mm-200mm Strip steel thickness: 1.5mm-3.0mm Centering way: manual
3. Spiral accumulator
Spiral accumulator is used to receive strip steel discontinuously from uncoiler and at the same time provide the steel strip to forming unit continuously.The capability of reservation can be controlled by spiral parallel. The circumference difference of outer and inner parallel multiply by number of parallel is the capability of reservation. There are guide roll supporting stand and torsion area in front of spiral accumulator. Steel strip will be turned from horizontal state to vertical state. Guide roll supporting stand is made up of carrier frame and holder and two vehicle withdrawal rolls, vehicle withdrawal rolls can alter strip steel from horizontal state to vertical state. Vehicle withdrawal roll is driven by electric machine, which and drive unit of accumulator is controlled by operating table.
Steel width: 80mm-200mm
Strip steel thickness: 1.5mm-3.0mm
Storage length: 400-1000mm
Max exit Speed: same as the speed of whole line.
Working style: outside entrance and inside exit
Horizontal Roll Stands: 7 Vertical Roll Stands: 9
Guide Roll Stand; Squeeze Roll Stand; weld scraping stand; Grinding Stand; Water Cooling
Horizontal Roll Stands: 5 Vertical Roll Stands: 5
Turks Head: 2 Sets (4 Roll Type)
Main DC Motor: Forming Section: 75Kw 1 Set;
Sizing Section: 75Kw 1 Set
Main Reducer: 2 Sets
Equipment Main Structure and Performance
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 Gr15, high frequency quenching process.Quenching hardness HRC58-62, the left and right bracket is the steel plate welding structure
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 roller type structure, the above two roller can adjust alone, respectively to control the clearance of the upper and lower roller, ensure leveling effect, leveling roll material is Gr15, high-frequency quenching, quenching hardness HRC58-62
Horizontal roller frame is the key components of the forming and sizing mill,by the strip into the pipe billet and the guarantee of the size precision of steel tube is done by it. Horizontal roller stand with gantry structure, side out roll change
Vertical roll stand is the key components of the forming and sizing mill, main help horizontal roller deformation, prevent strip rebound, absorb part of the edge of the waiting stretching
Vertical roll stand adopts single screw adjusting operation, on the roll change
Conditioning treatment after rough turning, and then to finish turning, after finish turning high frequency quenching, quenching hardness HRC45-55,grinding after high frequency quenching, the surface roughness is less than 0.8, the coaxial degree is less than 0.02, face runout is less than 0.02
Weld Seam Guide Stand 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, guide roller frame can be plus or minus 20 degrees along the pipe axis rotation, adjust up and down, and around.
Squeeze Roll Stand is mainly to the high frequency heating pipe billet extrusion into welded pipe, is a major part of the guarantee welding quality, extruding roller frame structure is the same with vertical roll
Conditioning treatment after rough turning, and then finish turning, after finishe turning high frequency quenching treatment, grinding after high frequency quenching
It 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.
It is used to chill weld area for ensuring steel pipe be straighten precisely. It adopts the structure type that combines sprinkling and water bath into one.
Another name is Turks head and stated at the last part of sizing mill, it is used to straight strip pipe coarsely. It is made up of two sets of four- roller straightening and head can revolve and adjust for right and left. It utilizes three-point way to straight steel pipe.
It is used to connect gearbox and horizontal roll stand, it also connect main gearbox and extension gearbox. It adopts tailor-made transmission shaft. It is advantageous for using, maintain, changing and matching, also it owns overload safeguard function for horizontal stand.
Unit reducer adopts secondary screw arc gear reducer. Each reducer consists of a pair of spiral arc gear and two on cylindrical gear. The advantage of speed reduction gear box is sturdy and durable, low cost of maintenance and replacement. bevel gear material: 20CrMnTi
5. 200 Kw Hifrequency welder
Contact Person: Mr. Yan