Brief introduction of ERW high precision tube rolling mill

General introduction

This agreement covers uncoiler, straight-head leveler, shearing butt welding machine, spiral looper, forming machine, welding machine, sizing machine, washing and cutting flying serratus, online flaw detection, flat head, water pressure, flattening experiment , Focusing on a series of complete sets of equipment such as length measurement, are described, which is the technical agreement for some equipment of the ￠630API welded pipe production line.

Improve operation performance and production performance

Meet the safety of low-volume and multi-variety production

Improve the operating environment and safety

Improve the stability of product quality

Improve the yield of products

Reduce the cost of equipment

First, according to the above design guidelines, this production line adopts South Korean milltech company's molding technology in the key unit molding process and frame equipment.

Second, advanced pass design software, finite element analysis of the force, stress and strain of each frame:

Using genuine German COPRA pass design software, by analyzing the strain of the cold-formed profile forming process, the most suitable cold-forming process and modification pass can be determined before the roll is manufactured. The finite element simulation technology can be used to simulate cold During the bending forming process, the roll design is optimized, and the stress-strain simulation is used to check whether the design has dangerous areas that are prone to defects.

Third, quick roll change device

In order to reduce the roll change time when changing specifications, two methods are used to save time,

1. Another set of horizontal roller shaft system is prepared. When changing the rollers, only the horizontal shaft on the frame is lifted out, and the set of horizontal roller shafts can be installed for production.

2. The drive shaft quick release device, the drive shaft is quickly disconnected from the end of the horizontal shaft by moving the frame, saving time.

Specifications

1. Technical standards: API 5L API 5CT GB/T 3091 JIS G3452 JIS G3444 JIS G3445 ASTM A513 EN 10219

2. Steel grade:

Line pipe: A, B, X42, X46, X52, X56, X60, X65, X70, X80

Oil casing: H40, J55, K55, N80

Structural tube: Q215, Q235, Q295, Q345, 20#

Table 1 PSL1 steel grade and performance requirements in the line pipe specification (API Spec 5L)

Table 2 PSL2 steel grade and performance requirements in the line pipe specification (API Spec 5L)

Table 3 Casing and tubing performance

3. Raw material

OD：Ø1500mm～Ø2300mm

ID：Ø760mm

COIL WEIGHT：Max.35 Ton

STEEL WIDTH：680mm～2000mm

STEEL THICKNESS：4.0mm～20.0mm  

GRADE：MAX J55、K55、X60And carbon structural steel, etc.(≦400N/mm2)

5. PIPE SIZE

OD： Ø 219.1mm～Ø 630.0mm

LEGTH：4～18.5M

SPEED:    12～35 M/Min

Production Process

Scroll up → Uncoil → Flattening → End Shear & Butt Welding → Accumulator → Forming → High-frequency induction welding→ Removing external burr → Cooling → Sizing → Cutting → Checking & Collecting → Accessing Warehouse

ERW Tube Mill Other Model