Square and rectangular pipe mill System 1

Square and rectangular pipe mill

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Loading Port:: China Main Port

Payment Terms:: TT OR LC

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Specifications

HG168 pipe mill is used to produce round pipe 2" - 6" and square tube 50x50mm - 130x130mm.

HG168 Pipe mill, round , square/rectangular steel pipe mill line

I. Summary

The mill is intended for manufacturing round pipe of Φ60mm-Φ165mm with thickness of 2.0mm–6.0mm from cold-rolled and hot-rolled coil strip by means of unclosed tubular blank with its subsequent welding into tube, edge heating by means of solid state high-frequency welder, longitudinal seam welding in rolls of tube welding machine, cooling, further sizing or shaping and on-stream cutting of endless tube in measured lengths.

Finished product will be of round, square or rectangular pipe.

II. The technical flow of the production line

{SteelTape}→→ Double-head un-coiler →→Strip-head Cutter and welder→→

Cage Loop →→Forming section(Flattening unit +Main driving unit +Forming unit +Guide unit +High frequency induction welding unit +squeeze roller)+ De-burr frame →→Cooling unit →→ Sizing unit and straightener →→Flying saw under computer-control →→ Run-out table

III. Basic conditions:

a) Steel Pipe Specification

model	HG165
Round Pipe	Φ60 –Φ165mm
pipe thickness	2.0 – 6.0mm
Square & Rectangle Pipe	50X50mm –130X130mm
Pipe Length	6.0m – 12.0m
Length Tolerance	0-6mm

b) SteelTape Specification

1. Material: Carbon steel (δb≤500Mpa, δs≤235Mpa)

2. Steel Tape: Inner diameter: Φ600-Φ760mm

Outer diameter: Max.Φ1800mm

Strip steel width: 200mm-520mm

Strip steel thickness: 2.0mm-6.0mm

The maximum weight: 6.0 tons

c) Electric installed capacity: appro. 800KW

d) Size of the whole line: appro. 90X7.0m

e) Line Speed: 20-60m/min

Forming & sizing section

5.1 Forming mill gearbox, universal joint

5.1.1 Mill entry flattener by up-horizontal roll and below-horizontal roll, one positive five-roll flattener, one pair of feeding vertical roll.

5.1.2 Forming mill consists of:

- Driven stand: 7 sets (Horizontal)

- Driven stand shaft: Φ 120mm

- Material of shaft: 40Cr

- Side roll stand: 8 sets(Vertical)

- Side roll stand shaft: Φ75mm

- Material of shaft: 40Cr

- Gear box & universal joint: 7sets

- Material of gear box: cast steel

- Material of gear: 20CrMnTi

- Main motor: 110kW Model: Z4-250-11 2 sets

- Main redactor: 2 sets

- Horizontal roller frame with worm gear & shaft. adjust up and down at same time and level.

5.2 Sizing mill gear box, universal joint

5.2.1 Sizing mill consist of:

- Driven stand: 5 sets (Horizontal)

- Driven stand shaft: Φ 120mm

- Material of shaft: 40Cr

- Material of gear box: cast steel

- Material of gear: 20CrMnTi

- Main motor: 160kW Model: Z4-250-42 1 set

- Main redactor: 1 set

- 2 sets single head Turkshead, with 4 rollers*2sets

- One speed testing roller with air cylinder for CNC flying saw

- Horizontal roller frame with worm gear & shaft. adjust up and down at same time and level.

Q:What kind of material and what heat treatment are used for pressing roller (molding, feeding, cutting force, heavy load, heavy load) of sheet steel rolling machine?: Non bonding wear of rolled material (especially stainless steel strip, etc.)

Q:Improvement in rolling forming process: Can not meet the slender rod, thin-walled tubes and other rigid parts of the processing.

Q:What is the surface rolling forming machine process?: Due to the rolling surface of metal plastic deformation, so that the surface microstructure of cold hardening and grain refinement, forming a dense fibrous, and the formation of residual stress, hardness and strength, so as to improve the surface wear resistance, corrosion resistance and compliance.

Q:Introduction of roll forming process: With the progress of technology and the development of production, more and more attention has been paid to the roll forming process.

Q:A roll forming machine, rolling out of the length is always not up to a fixed size, not too small, that is, more than that, what is the cause?: According to my experience, there should be a problem with the boot encoder (also known as the digital wheel). Thank you. I hope I can help you.

Q:Process mould for rolling forming process: A movable wire plate, made of the same fixed wire plate, for relative reciprocating motion. Roll forming is the design of different structures on the plate rolling on the workpiece. Roll out all kinds of thread, convex ring, knurling, end chamfering, groove with different width and thickness as well as other required shapes.

Q:Material and equipment for roll forming process: The most common type of roll forming is reciprocating flat wire twisting machine. Therefore, for the manufacturers of cold heading machines and screw rolling mills, the design of rolling dies is only a matter of design.

Q:What is rolling forming processing?: Ironing the surface of the workpiece with a raised micro wave crest to fill the concave micro troughs, thus changing the distribution of the peaks on the surface, and obtaining smaller surface roughness values.

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