Rolling (metalworking)

For mills that use rollers to crush grain or stone, see roller mill. rolling schematic, Rolling visualization. In metalworking, rolling is a metal forming process in which metal stock is passed through one or more pairs of rolls to reduce the thickness and to make the thickness uniform. The concept is similar to the rolling of dough. Rolling is classified according to the temperature of the metal rolled. If the temperature of the metal is above its recrystallization temperature, then the process is known as hot rolling. If the temperature of the metal is below its recrystallization temperature, the process is known as cold rolling. In terms of usage, hot rolling processes more tonnage than any other manufacturing process, and cold rolling processes the most tonnage out of all cold working processes.Roll stands holding pairs of rolls are grouped together into rolling mills that can quickly process metal, typically steel, into products such as structural steel (I-beams, angle stock, channel stock, and so on), bar stock, and rails. Most

steel mills have rolling mill divisions that convert the semi-finished casting products into finished products.

There are many types of rolling processes, including ring rolling, roll bending, roll forming, profile rolling, and controlled rolling.

Hot rolling

During the production of special steel profiles by hot rolling  the input billet or slab is formed into lengths up to 70 m using two oppositely rotating cylindrical rolls. The products of this forming technique are used in a multitude of industrial applications. Hot rolled steel profiles offer innovative solutions whether it be for automotive, materials handling or railroad use. Hot rolled custom profiles are roller straightened and sheared into production lengths or sawed into fixed lengths according to customer wishes.

The advantages of hot rolled special profiles include, among others:

·       targeted strengthening of highly stressed areas of component parts

·       best mechanical properties through uninterrupted grain orientation

·       best shape properties and fitting accuracy by maintenance of the tightest tolerances

FUJIAN GEILI MACHINERY MANUFACTURING CO.,LTD

Couplings for steel industry

In a steel plant, there is a necessity for the reliability and high performance of machinery and equipment.  Couplings, serving as vital transmission parts, are no exception to meet higher and more stringent quality requirements needed for the steel plant’s equipment and machinery.

Function:
It used to transfer rotational movement from one shaft to another. Couplings are used to connect two shafts for torque transmission in varied applications. Couplings are capable of transmitting axial thrust loads between machines and any axial growth that may occur due to high temperature.

Types of coupling
Couplings are normally classified in two ways. The classification of couplings is rigid coupling and flexible coupling.

Rigid couplings are used for shafts having no misalignment. Rigid couplings are of following types:

• Sleeve coupling

• Sleeve coupling with taper pins

• Clamp coupling 

• Ring compression type couplings

• Flange coupling 

Flexible couplings are more commonly used to transmit driving torque between a prime mover and a rotating element of the equipment. Flexible couplings are of following types:

• Elastomeric couplings

• Metallic membrane couplings

• Miscellaneous couplings 

We are one of the leading manufacturers and suppliers of CCM & Rolling mills, we can supply whole production line and steel rolling mill parts. The range made available by us is manufactured employing advanced technology and latest machines following industry set guidelines. All these products are widely acknowledged in market for their outstanding performance, longer service life and corrosion resistance. 

Joint cross shaft/Cardan shaft for Rolling mill

Rolling process in Steel rolling plant

Rolling of steel is one of the most important manufacturing processes for steel. Steel rolling is the process of plastically deforming steel by passing it between rolls. Rolling is defined as the reduction of the cross sectional area of the steel piece being rolled, or the general shaping of the steel products, through the use of the rotating rolls.

The initial rolling of steel is done in a hot rolling mill where blooms and slabs are rolled down to various rolled products such as plate, sheet, strip, coil, billet, structures, rails, bars and rods. Steel rolling can produce a wide range of products. The width of a rolled product can vary from a few millimeters to several meters while the thickness can vary from 0.1 mm to more than 200 mm. The rolled section can be square, rectangular, round or shaped sections.

Rolling of steel is done not only to achieve the desired cross section but also to get the desired properties of steel. Rolling of steels imparts strength and favourable grain orientation. Further heat treatment processes incorporated during controlled rolling helps in modification of steel microstructure to give the steel desired properties.

Fujian Putian Geili Machinery manufacturing Co., Ltd was founded in 2006, the registered capital of 20,000,000 yuan.There will be good cooperation chance If you

1. Have the raw material of billet or steel scrap2. Want to build a steel factory3. Don't know how to process or design the production line4. Want to add the production line5. Want to purchase the accessories6. Want to reduce the invest budgets since the high cost from European countries and long term RIO period

Rolling mill for Rolling process/ Rolling plant

Roller table in steel making plant

Roller table is the main transmission equipment in steel rolling, it takes 40% proportion on whole rolling workshop equipment.

It serves for transporting billet and linking with other process. It consists of torch entry roller table, run-out roller table, discharge roller table, hot charge roller table, etc.

Drive mode: Centralized drive and individual drive 

Supporting types: Gantry type and supporting type Roller types: Short roller, long roller shared by strands

Technical Parameter: 

Material: Steel 

Certificate: ISO9001 

Dimension: Customised as per customer's requirement 

Material Feature: Water, wear, dust and corrosion resistance 

Company profile:

As a professional and experience manufacturer in China, we can supply whole production line from induction furnace, CCM and rolling mills. We can give turn-key service from foundation excavation, production line design, equipment manufacturing, installation and debugging, technician training depending on prominent capacity of designing and manufacturing and abundant practical experience of installation.

Table Roller

Touch cutting machine in steel plant

Touch cutting machine is a main equipment matched for continuous casting machine in steel plant, it can cut straightened plain carbon steel and low alloy steel billets and blooms into needed specified length. 

Main Components:

Mechanical systemElectrical system

Energy media control system 

Company profile:
We are rolling mills and continuous casting machine manufacturer in China, which the final products are round steel, deformed steel and wire rod. There will be good cooperation chance If you

Have the raw material of billet or steel scrapS. 

Want to build a steel factory

Don't know how to process or design the production line

Want to add the production line

Want to purchase the accessories

Want to reduce the invest budgets since the high cost from European countries and long term RIO perio

Continuous casting machine for steel making

Dummy Bar in Steel industry

The dummy bar is used for tract and lead the cooled and solidfied strand and pull it out by the withdrawl and straightening machine.

Features:
It has the features of smaller deformation, long service life, simple structure and installation, easy operation and maintenance.


Main Components:
Rigid dummy bar body
Rigid dummy bar head and transition
Pins

Technical Data:
Type : Rigid dummy bar 
Material: 42CrMo
Out Radius Range: 4.5~10 m
Section of dummy bar body: Determined by billet size

Fujian Putian Geili Machinery manufacturing Co., Ltd was founded in 2006, the registered capital of 20,000,000 yuan. We have acquired many years of experience in the field of CCM & rolling machinery and we engineer the design, supply, installation and commissioning of equipment on a word wide global basis, with the customers from Philippines, Indonesia, Thailand, etc.

Dummy bar for Steel making plant