Steel Re Rolling Mills in India

General definition of Steel - an alloy of iron with small amounts of carbon, widely used in construction because of its life and hardness, mechanical properties can be varied over a wide range get ready for something difficult or unpleasant.
Presently in all over world various industries are making use of steel rolling mills. They are using highly durable products and all latest machineries used in manufacturing units
Hot Rolling Mills - A metal working process where large pieces of metal are heated above their temperature and then deformed between rollers.
Cold Rolling Mills – it is a part of steel re-rolling process. Cold rolling mill is the area where any cold complex and represents an important investment cost. For all types of medium & heavy mechanical engineering equipments, cold rolling mills can be used.

Bar & Rod Mills – The mills creating bar and rods are known as bar and rod mills. Process for manufacturing bar and rod mills require international quality norms in manufacturing facilities. Bar and rod mills are used for manufacturing important products such as tire steels,  welding steels, cold heading steels and more.
Structural & Blooming Mills - The use of Structural and blooming mills are for producing blooms, any length of rolled metal having almost square cross section. Apart from its use in both hot rolling and cold rolling these mills can play a important role in achieving thickness, length and width.
Strip Mills - Fabrication from superior quality steel, strip mills are highly reliable and durable. Strip mills are available for high and medium capacities. Output from a Strip Mill is coiled, used as the feed for a Cold Rolling Mill or used directly by fabricators.

Roller Table for Rolling Mill

A Quick Guide To Wooden Cross Flow Cooling Tower

Due to the innumerable applications of cooling towers in various industries, these towers are widely used for various industrial purposes. Cooling towers are a heat exchanger device that is used by bringing air and water in indirect contact to reduce the temperature of water by circulating through the tower. The cooling towers have become a necessity rather than a luxury in various industries, therefore, while manufacturing these cooling towers, it is necessary to make sure that they are made by using strong materials. Due to the immense size of these towers, they can be used only in larger installations such as refiners. However, the technical set up of cooling towers are smaller in size as they use electrical fans to force a setup of air through the structure. Because these towers are made up of metals, it is important to protect them with a protective layer so that corrosion and rust could not reach and affect the body of cooling towers. The coating of PVC fills of cooling towers will help to protect the tower from corrosion and rust. The businesses and industries that deals with air conditioning, refrigeration, steel manufacturing, sugar manufacturing, petroleum refining and many more, look out for robust equipment to serve the purpose of cooling throughout the work process.

Wooden Cross Flow Cooling Towers
These towers can be used in industries, foundries and pharmaceuticals etc. These towers can be easily maintained as they are safe and reliable to use.

Cooling bed frame

Some of the diverse applications of Stainless steel seamless pipe

Steel was invented around 100 years ago. The importance of steel has risen by leaps and bounds due to various reasons and attributes of steel. Steel does not get rusted easily and is light-weight as compared to Iron. It is durable, ductile, malleable, corrosion resistant and fire-resistant among scores of other benefits. All these features of Steel have made it the king of raw materials used in almost every industry. Steel is mostly used as structural steel which is the most preferred framework material for residential as well as non-residential construction. The steel beams and columns are the skeleton of the building and support the entire construction just like the bones in a body do. Angle bars, I-Beams, H beams, IPE etc. are some of the other structural elements requited in the construction. It is therefore clear that steel is indispensable in industries. The specially processed steel like galvanised steel has made steel more versatile and fit for various purposes. Some of the commonly used steel products are steel sections, steel pipe, steel tube, steel coil, steel sheet and steel plate. The process of galvanisation increases the strength and durability of steel. Steel has several grades and steel prices vary accordingly. Other types of steel are:

Galvanised steel
Galvalume Steel
Prepainted Steel
Hot rolled steel
Cold rolled steel
Stainless steel pipe and tubes are some of the most common application of steel which are used in most industries as well as household. Steel pipes are used as curtain and drapery rods, plumbing pipes, parts of the mechanical equipments and various other uses.

 Section Steel Cooling Bed

Charcoal and the General Steel Making Process

When one thinks of charcoal, we normally think of the most important historical use of wood charcoal; as the main ingredient in gunpowder. However, it was of major importance in metallurgical operations as a reducing agent, primarily in the manufacture of steel. The most common use in the modern era for charcoal is as a fuel source, but still has industrial application. The Charcoal Hearth Process was vitally important in the early industrial steel age.

Only a good quality of pig iron (nearly always charcoal pig) is used, as the process is expensive, and is employed only for a high grade of wrought iron. The pig iron is often given a preliminary refining to eliminate most of the silicon. The hearths are usually built of unlined cast-iron plates, at least in part water-cooled. Brick-work is avoided as the silica would enter the slag. The processes may be classified according to the number of times the metal is melted down before the tuyere, into single melting, double melting, and triple melting (or German or breaking up); into Walloon and non-Walloon.

The hearth may be covered or uncovered; if the latter it is called an open fire or open hearth; if the former, a closes hearth. The bloom, after rolling, is called finer's bar (cor- responding to muck bar in puddling), and after piling and rerolling, finished charcoal bar. German general steel  is an obsolete name for the product obtained by melting white or refined pig in a charcoal hearth; it may also be made of poorer quality. In the Bohemian process, mottled or even gray pig is used, and the blooms are reheated in the same hearth. Charcoal is first charged, and on top of this some slag and the pig which is melted down slowly, the iron cake which is formed being frequently raised up. The cinder is tapped at intervals. Finally the bloom is welded to the end of a rod and taken to the hammer; any particles of iron that remain in the hearth are retreated.

The use of charcoal in steel making rapidly diminished with the introduction of coke, anthracite smalls, etc. for industrial processes.

Straightening Machine for Steel Making

Re-heating furnace

Why you shouldn't forget about your furnace?


Airflow:

Like a heart, your furnace is responsible for keeping everything moving. Winter, summer, spring or fall, the furnace is pushing air through your

The type of fan motor your furnace uses can affect the comfort level in your home, and the amount of energy you use.

Single-speed motor(PSC): Operates at full blast, or not at all. Found in less efficient furnaces.

Constant Torque Motor:  Can adjust airflow based on heating or cooling need to maintain even circulation. Operates quieter on continuous fan speed and offers efficiency savings up to 33% more than standard single speed motors.

Variable-speed motor: Provides the highest level of comfort and energy efficiency.  Variable-speed motors can operate at high speeds, low speeds, and anywhere in between, ramping up and down like a dimmer

The ECM (Electronically Commutated Motor) gives you increased comfort by accelerating and decelerating slowly, which eliminates sudden gusts of air. The soft start and the soft stop make it a quieter furnace.

Heating is one of the most popular and best heating ways of metal material,has been widely used in fields applying oil,gas and coal heating,and is superior to oil,coal or other similar heating products by speedy heating,high efficiency and low production cost,low heating radiation,labor intensity and pollution conforming to environmental protection requipment

Re-heating furnace

Automating your Production Unit with Conveyors

Conveyors have revolutionized the production and packaging industry. Commonly associated with automobile and food packaging units, they have become indispensable in any automated process. Evolving from simple designs that were temporary setups, they have become sophisticated both in design and in function. The zero push and the accumulated conveyors are examples of leaps made in the development of automotive handling technology.

Choosing the right conveyor Irrespective of the industry you are operating in, a conveyor can tremendously improve the overall efficiency and bring down the cost of production. It will also reduce your dependence on manual labour which implies a faster production process. There are many types of conveyors available, with each type differing from the other in its drive technology and load bearing capacity. The material and design further expands the number of options.

Other types of Conveyors The simplest of the conveyors available is the gravity roller. It does not have a drive mechanism. A series of rollers do the transporting under the influence of gravity. These machines are available in various sizes and are ideal for use in the last stage of production, which is usually loading or unloading. The belt-slider bed conveyor is used where objects are not heavy. These machines are available in different configurations.

You could get an inclined conveyor to suit assembly needs or simply get a horizontal transport device. Easy to setup, belt replacements are the only maintenance these devices usually require. Plastic belt, belt driven rollers and accumulator are other types of Conveyors available.

Conveyor roller

Types, Benefits, and Significant Uses of Conveying System

With the invention of a number of highly advanced tools, production has raised to a surprising level in many industries. Previously, one of the problems that such industries face is how to efficiently move products from one industrial area to another because there are usually multiple processing points. Conveyors have now solved this problem. These are typically used in different types of manufacturing areas for conveying goods of various kinds and sizes to different areas of a warehouse or distribution centre. There are various kinds of conveyors including powered, pallet, in-floor, gravity, roller and belt conveyor which suit the different requirements of various industries.

Types of products that can be transported using conveying systems include car parts, large products, white goods, boxes and food products. Each type of a conveyor differs from the other in its load bearing capacity and drive technology. The design and material used to produce them further expands the number of options. Conveyor rollers are mostly used among all; these allow easy transportation of products within the industry. It consists of a number of round cylinders on a long surface which lets the products to be pushed around. This kind of conveying system comes with and without a power unit.

The simplest of the conveyors available is the belt conveyor. It is mostly used for a vertical change in the system, allowing the industry to use multiple floors on different levels. In this kind of conveying system, belts are wrapped or covered around the conveyor rollers which rotate over the top area of the rollers in a large fixed path. The flat belt is frequently used for products of different shapes and sizes. These products have certain weight limits. Basically, these are used in the transportation sector, for example airport. With the help of spiral conveyor or vertical lifts, the products can be taken up or down to other levels.

Conveyor roller

Steel Rolling Mill Machinery

Rolling process is one of different types which include flat rolling, foil rolling, ring rolling, roll bending, roll forming, and profile rolling, etc. Flat rolling is a process in which a material having a rectangular cross section is fed between the rollers which results in metal sheets. Float rolling process is used for producing foils. In this process, rolling is done by cluster mill because small thickness requires a small diameter rolls. Ring rolling process is a special type of process that increases the diameter of the ring.

If the temperature of the metal is below than its recrystallization temperature then it is termed as cool rolling process. If the temperature of the metal is above than its recrystallization temperature then it is termed as hot rolling process. Cold steel rolling mill machinery can be used for all types of heavy mechanical engineering equipments. In hot rolling mill, a large piece of metal is heated above their temperature and then deformed between rollers.

Roll bending process produces cylindrical shaped products. Roll forming process is used for producing mechanical parts with long length or heavy quantity. There are many other methods of making metal sheets and other metallic instruments with the help of steel rolling mill machine.

Finishing Block Mill for Wire Rod

Science & Technology During Industrialization

The Creation of Steel

One of the pioneers of the industrialization of America was Andrew Carnegie. He wasn't skilled in the process of making steel, but he invested large amounts of capital to install Bessemer converters in factories. The Bessemer converter transformed wrought iron (pig iron) into steel by blowing cold air through the vessels and then through the molten iron, ridding the iron of any impurities which made it mandible and weak, forming steel. This process was a very simple one where unskilled workers were able to operate it with ease. One of the very first Bessemer converters was installed in Carnegie's own Edgar Thompson Steel Works in Braddock P.A. The factory was able to produce a great amount of steel which cost less by the ton. McClure's magazine documented the results:

"Out of each pot roared alternately a ferocious geyser of saffron and sapphire flame, streaked with deeper yellow. From it a light streamed -- a light that flung violet shadows everywhere and made the gray outside rain a beautiful blue. A fountain of sparks arose, gorgeous as ten thousand rockets, and fell with a beautiful curve, like the petals of some enormous flower. Overhead the beams were glowing orange in a base of purple. The men were yellow where the light struck them, violet in shadow.... The pot began to burn with a whiter flame. Its fluttering, humming roar silenced all else.... A shout was heard, and a tall crane swung a gigantic ladle under the converting vessel, which then mysteriously up-ended, exploding like a cannon a prodigious discharge of star-like pieces of white-hot slag.... Down came the vessel, until out of it streamed the smooth flow of terribly beautiful molten metal. As it ran nearly empty and the ladle swung away, the dropping slag fell to the ground exploding, leaping viciously, and the scene became gorgeous beyond belief, with orange and red and green flame."

Steel Ladle

cement vertical roller mill

For the cement industry were 30,25,20,10,8.8 tons of annual production and other industries use to meet the users of different materials with different yield and grinding requirements. At the same time I also have fine vertical grinding mill, the State Development Center has fine vertical cement mill as the "Eighth Five-Year" period focused on promoting the application of high efficiency, new energy-saving products.
The working principle of vertical roller mill vertical roller mills
1, the main structure and function
Roller is the main material for rolling mill parts. Mill built with two pairs of roller, each pair of rollers mounted on the same shaft, rotating at different speeds.
Disc fixed to the reducer output shaft, the upper part of the disc material bed, the bed material a circular groove.
PRM-type separator mainly composed of vertical roller mill ,roller, disc, compression device, reducer, motor, housing and other components.
Fineness of separation is an important component of the decision, which consists of adjustable speed drives, rotor, guide blades, housing, meals, fighting off the cone material, composed of the outlet, and the separator works similar.
Pressure device is called the grinding pressure of the components provided by the high pressure oil station, hydraulic cylinder, rod, storage and other components, able to exert enough pressure roller grinding of materials.
2, the working principle of vertical roller mill
The material flow through the separator, in the role of guide vanes and the rotor, the coarse material to the disc from the hopper cone, the fine powder with a mill with air, dust collection device in the system to collect, is the product, the material in the contact process with the gas being dried to the required product water, by adjusting the angle and the wind guide vane separator rotor speed can be different fineness of the product.
Motor through reducer drive the disc rotation, the current hot air from the air inlet into the mill, the material from the feed opening falls on the central disc; the centrifugal force, material to the disc edge and moved across the ring groove on the disc by the grinding roll rolling and grinding, to the edge of the disc, moving through the air with the wind at the starting of large particles falling back to disc on the direct re-grinding.

After-cutting roller table

Hot Rolling Mills

Our range of hot rolling mills are extensively used for shaping large pieces of metal, such as slabs or billets. These pieces of metal are heated above their recrystallization temperature and then deformed between rollers to form thinner cross sections. The hot rolling produces thinner cross sections than cold rolling processes with the same number of stages. Hot rolling will reduce the average grain size of a metal, while maintaining an equipped micro structure.

Now, this process, in commercial terms is known as Turn Key project. For e.g. If a foreign company wants to install a hot rolling mill, they would search for the companies who would manufacture/supply/install all the machinery and give them a trial production start-up. Now, not necessarily the turn key project company will be based in the same country, and hence, they have to depend upon foreign turn key project handlers for this project.


Usually, the machinery involved for say a Automatic Hot Rolling Mill (capacity 60,000 mts per year) are as below:


pinion stand

C.I base plate for mill stand and pinion stand

Fabricated base plate for gear box

3Hi 410 mm cast steel mill stand

foundation bolts

MILL AUXILLIARY

BEARINGS

Fibre bearing for Roughing mill

Roller bearing for Intermediate mill

Roller bearing for Finishing mill

MILL AUXILLIARY EQUIPMENTS

furnace exit roller table

billet transfer

mill working roller table

roller table[lifting]

bar transfer stand 1 to stand 2

Furnace charging roller table 10 m long

Billet charging Grate

Rolls for finishing mill

Roller Table

Advantages Of Pouch Packing Machine

There are a number of people as well as manufacturers have been able to make huge profits when the different types of packaging materials came into the market and the people bought them since they were new and hence attractive. Not only this, it made their work of packing and storing things very easy and convenient.  It is a blessing for the people who specially deal in food products. The items can be of any form such as solid or liquid and protected packaging machines are of great help since they package the product in a sturdy and attractive packing. This doesn't damage the product while they are being transported and can be stored for longer durations than usual.

A  very popular style of machine that is now used by many manufacturers is the pouch packing machine. There are a number of types of pouch packing machines that are manufactured by a number of manufacturers. These machine types are as follows:

1.Automatic pouch packing machine
2.Water pouch packing machine
3.Oil pouch packing machine
4.Viscous liquid pouch packing machine
5.Rice pouch packing machine, and many more….

If a person is unable to purchase a machine of the latest technology, he/she can also buy a second hand model or some previous version of the same machine. Of course there will be some difference in its functioning and quality, but the budget is a big constraint. Another thing that can be done is that one can buy latest technology machine by paying the amount of the machine at fixed installments over a period of time.

These machines have made the manufacturing process of many items very easy. Where manual labor was used, today the work has been replaced by machines that work in just a click. It can be easily said that packaging machines of all types have acted like a blessing to the manufacturing industry where very item needs to be packed so that it is delivered to the end consumer in the right condition.

Wire Rod Packing Machine

General Knowledge of Seamless Steel Pipe

Seamless steel pipe is a long steel with hollow sections and has no joints surrounding the steel bar. It is mainly used as a pipeline to transfer the fluid, such as oil,natural gas,water and some solid materials,etc. As compared to the flexural torsional strength in the same light, it is an economic cross-section steel. The seamless steel pipes are widely used in the manufactures  and mechniacal parts,such as the oil pipe, automotive transmission shaft,bicycles aircraft,as well as buliding construction. With steel pipe manufacturing, annular parts can improve the material utilization, simplify the manufacturing process, save material and machining time. For example, the roller bearing rings and the jack sets and so on have been widely made of steel pipes. Cylindrical rube can delivery more fluid since the circle has the largest areas under the same circumference. In addition, the ring cross-section bears internal or external pressure, the force more evenly, so that vast majority of tubular steel pipes are cylindrical rubes . However, the tube also has some limitations, such as in-plane bending conditions, the pipe on the better side, rectangular tube bending strength, and a number of sets of frames, steel-wood furniture on the commonly used square, rectangular tube.


The pressure grade of the pipes:

The parameters of channels characteristics which are determined by the nominal pressure level and wall thickness are called the pressure grade of the pipes.
the determine of the pressure  grades is not only the basis for pipeline design, but also the core of design. It is the basis of the arrangement of pressure pipe, and pressure pipe stress precondition for checking the design. and it is also an important factor which will affect investment and reliability.

Steel Cooling Bed Conveyor

Some of the diverse applications of Stainless steel seamless pipe

Stainless steel seamless pipes have become very common these days and are offered by almost all steel pipes manufacturers. The benefits such as higher corrosion resistance than carbon steel and conventional stainless steel and light –weightiness make the design and construction compact and light. Stainless steel is composed of copper, chromium, nickel, tungsten, manganese, etc. and is therefore rust resistant. Stainless steel seamless pipes can prove to be a cheaper alternative to the nickel alloys, which are very costly. Steel has higher strength which leads to reduced thicknesses of section and therefore has reduced weight. It also exhibits good weld ability in thick sections and the ability to be welded is more in stainless steel. Resistance to stress corrosion cracking: Austenitic steel is prone to such corrosions. The resistance posed by stainless steel to stress corrosion cracking makes this material fit for purposes like Hot water boilers, brewing tanks and desalination, structure of swimming pools, etc.

Some of the advantages of using steel seamless pipes in the industry

Increased strength leading to saving of weight.
It has  better stress corrosion resistance
Price is lower as compared to other alloys
These pipes can handle a lot of pressure and adverse weather condition.

 Section Steel Cooling Bed

casting process vibration device

Casting process vibration device is made up of four parts, oscillation platform, demi-plate spring device, reducer and eccentric shaft device.

Oscillation platform: it is of welded machining structure; the joint part mounted on it for cooling water inlet and outlet can be disassembled rapidly; for the water inlet and outlet of mould and foot roller

Semi-plate spring device: Substituting the upper part’s rigid guiding arm. Lessen the hinged point to ensure stable oscillation.

Reducer: being of pinwheel structure, long life span and high efficiency.
Eccentric shaft device: the swing will be adjusted by adjusting the position of eccentric shaft and eccentric sleeve.

casting process vibration device