Reversing mill
Reversing mill
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Product Details


Introduction


Reversing mills are key equipment used primarily for cold rolled strips. It has high precision and control requirements for mechanical, hydraulic and electronic control.

The 20-hi rolling mill adopts a split roller seat. The upper and lower roller seats are placed between the arches to place hydraulic cylinders, which are directly pressed by the servo automatic thickness control system. The rolls are arranged in the form of 1-2-3-4 of the upper and lower structures. The indicators have reached international standards.


In recent years, there are more and newer cold rolled stainless steel plate production lines in China. However, due to the large deformation resistance of stainless steel, alloy steel and the like, most of them are rolled by a reversible multi-roll mill. Usually consists of upper and lower systems, measuring systems, main rolling mill systems, rolling oil filtration systems, oil mist collection systems, main and auxiliary hydraulics, fire protection systems and so on.


reversing millreversing mills



Reversing Mill Types


Regardless of the types of reversing mills, the front and rear equipment and auxiliary systems are roughly the same, all of which are configured for the rolling mill production process. The main rolling mill generally has two categories of 20-hi rolling mill and 12-hi rolling mill.

The 20-Hi Sendzimir Mill is currently the most widely used model, and the 20-hi mill also has integral mills and split mills.


4-Hi Reversing Mill


The 4-hi reversing mill is the most widely used plate mill in modern times. It combines the advantages of a 2-Hi reversing mill and a 3-hi mill. The support roller and the work roll are completely divided, which reduces the rolling force and greatly increases the rigidity of the mill. Therefore, it is suitable for rolling medium and heavy plates of various sizes, especially medium and heavy plates with large rolling width, precision, and strict shape requirements. However, the cost of such a rolling mill is high, so it is often used as a finishing mill to save investment.


4-hi reversing mill4-hi aluminum reversing cold mill




12-Hi Rolling Mill


The 12-hi rolling mill/12-hi reversing mill is used to roll very thin strip mills. It consists of two closed arches and upper and lower beams. The rollers are arranged symmetrically up and down according to the distribution of 3-2, and the three sets of support rollers are mounted on the support roller frame. Each set of support rollers is assembled from 6 to 7 large back pressure bearings and mandrels, which can be integrally loaded and pulled out of the frame.


Integral 20-Hi Rolling Mill


In the integral 20-hi reversing mill frame, each roller is mounted in the frame in a vertical and vertical symmetry according to the distribution of 4—3—2—1. Support roller assembly (8 sets in total). Each set of bearing rollers consists of six special bearings that are threaded from the mandrel and are fixed in the frame by the tow.


20-hi sendzimir mill20-hi reversing mill



20-Hi Split Rolling Mill


Each roller is mounted in the frame and is vertically symmetrical according to the distribution of 4—3—2—1. The support roller assembly has a total of 8 sets. Each set of support rolls consists of six special bearings that are placed on the mandrel and are fixed in the frame by the tow. The action of the four large cylinders directly moves the upper half of the rolling mill and the upper roller to complete the pressing function. The upper intermediate roll and the in-rack guide are similar to the one-piece 20-roll mill.



Rolling Conditions


1. Rolled material: ferrous metals, nonferrous metals, comprising a metal matrix composite material.

2. Billet Specifications: Thickness H≤50mm, width B = 300mm or less;

3. Finished Product specifications: thickness H≥0.5mm, width B = 300mm or less;

4. The maximum rolling force: P≤120 tons;

5. Rolling speed: V1-20 m / min adjustable;

6. Rolling temperature: 500-1200 ℃ or less.


reversing rolling mill product process

rolling mill manufacture process


Parameter


Raw materials

Texture of material

Metal and Alloys

Material Thickness

Max3.5mm

Material Width

Max1250mm

Inside Diameter

508mm

Outer Diameter

900-2000mm

Material Weight

Max25Ton


Finished product parameters

Finished Thickness

0.040-0.50mm

Coil Width

Max1250mm

Inside Diameter

Φ508mm

Outer Diameter

Φ900-2000mm

Coil Weight

Max25Ton


Main Technical Parameters of the 20-hi Reversible Rolling Mill


Mill specification

20-hi rolling mill reversible

Maximum rolling pressure

Non-standard(Width, Thickness, Material Properties)

Rolling speed

Max1000m/min

Coiling tension

Max50Ton

Mill speed precision

1%

(FS)Tension   precision(FS)

Dynamic   state: fluctuations in the value of less than 4%

Steady   state: fluctuations in the value of less than 1.5%

Hydraulic drive system pressure

12Mpa

Shifting Crown system pressure

16Mpa

AGC   system pressure

21Mpa




Customer Visiting


reversing mill customer visitingreversing mill customer visiting



Exhibition


reversing mill iran fairsendzimir mill iran exhibition



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