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

Min Order Qty:: -

Supply Capability:: -

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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: 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?: Yes, the width of the bearing plate can be a deviation from the length.

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.

Q: Improvement in rolling forming process: Rigid force, 1000N-3000N, damage to the guide rail of machine tool transmission mechanism, seriously damage the accuracy and life of machine tools.

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: 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?: Use 40Cr or 20Cr, Cr12.Cr12MoV, quenching and tempering treatment, think of hardness, high point, carburizing, nitriding, and consider adding lubrication device to extend its service life

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: Process mould for rolling forming process: Press forming is an advanced processing technology, and its remarkable characteristics have been paid attention to by the automobile industry at home and abroad.

Q: Material and equipment for roll forming process: Rolling process is a cold forging process, which can be used for rolling and forming a lot of materials. Among them, low carbon steel is a material commonly used in rolling forming, and non-ferrous metal is more suitable for roll forming.

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