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

Continuous casting machine of Pinch roller

The straightening machine inserts the dummy bar into the mould and withdraws the dummy bar / hot strands from the mould. It also straighten the hot strands according to continuous unbending strategy.

Pinch roller is used for holding down and transporting the last of billet in continuous casting.

Main Components:
Single stand
Rollers incl.
rotary joints
Drive units with motor
gearbox, coupling
Hydraulic cylinder
Piping and distributor for lubrication

Advantages of Design:
Roller linear speed synchronized with the hot strand during casting 
Lifting and lowering of roller by means of hydraulic cylinder
Drive unit protected against heat radiationInternally water cooled rollers

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.

Continuous casting machine for steel making

Tundish for Continuous casting machine

Continuous casting is a method of producing an infinite solid strand from liquid steel by continuously solidifying it as it moves through a CC machine.

To transfer liquid steel from a teeming ladle to the continuous casting machine mould, an intermediate vessel, called a tundish, is used. 

The continuous casting tundish serves as a buffer and links the discontinuous process of the secondary steel making in the ladle with the continuous casting process in the mould. It acts as a reservoir during the ladle change periods and continues to supply liquid steel to the mould when incoming liquid steel is stopped, making sequential casting by a number of ladles possible.

Many steel plant operators have studied their tundishes in order to maximize the benefits of the residence time available for the floatation and assimilation of reaction products from the liquid steel into the slag phase. These can be products of deoxidation, reoxidation, precipitation, emulsification and/or entrainment of refractory components into the liquid steel, and thus encompass both indigenous and exogenous inclusions. Based on a sound choice of tundish design, the operation of a tundish needs to be geared to the following.

• To promote inclusion floatation by maximizing residence time

• To ensure inclusion assimilation by a captive and noncorrosive slag

• To reduce thermal and chemical losses from the liquid steel

• To minimize short circuiting and dead zones

• To offer the operator an optimal design for quality and yield.

Tundish for CCM

Fuel gases used in steel plant

Fuel gas is a fuel which under ordinary conditions is in the form of gas. Fuel gases are used in steel plants for different applications which include a source of heat as a reductant and cutting and welding application. Fuel gases usually used in steel industry are natural gas (NG), liquefied petroleum gas (LPG), acetylene, by product gases (blast furnace gas, coke oven gas and converter gas).

Natural gas
Natural gas is a gaseous fossil fuel which is extracted from deposits in the earth. It is a mixture of hydro carbons consisting primarily of methane (generally greater than 80 %) but includes varying amounts of other higher alkanes such as ethane, propane and butane etc. 
The main usage of natural gas in the steel industry is in iron making. For production of direct reduced iron it is reformed to produce reducing gases which are then used for the reduction of iron ore. 
In case of iron making in blast furnace, natural gas is being injected in some of the blast furnaces at the tuyeres to reduce the consumption of BF coke and to increase blast furnace productivity. In blast furnace, natural gas plays a double role of a reductant and a fuel.

Liquefied petroleum gas
Liquefied petroleum gas (LPG) is extracted from crude oil. The main components of LPG are hydro carbons containing 3 or 4 carbon atoms. 
LPG is a gas at atmospheric pressure and ambient temperature, but it can be liquefied when moderate pressure is applied or when the temperature is sufficiently reduced. It can be easily condensed, packaged, stored and utilized, which makes it an ideal energy source for a wide range of applications. 
In steel plants, LPG is stored in pressure vessels. 

Blast furnace gas
Blast furnace (BF) gas is a gaseous by product which is generated while producing hot metal (liquid iron) in a blast furnace. 
In steel plants, BF gas is normally being used mixed with either coke oven gas or converter gas or both. The mixed gas is used as a fuel in various furnaces of the steel plant.

Converter gas
During the process of steel making in basic oxygen furnace (BOF), converter gas is generated at a rate around 75 to 95 Cum /ton of crude steel. 

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

 Continuous casting machine

Steel casting

Steel casting is a specialized form of casting involving various types of steels. Steel castings are used when cast irons cannot deliver enough strength or shock resistance. A steel casting is the product formed by pouring liquid steel into a mould cavity. The liquid steel cools and solidifies in the mould cavity and is then removed for cleaning. Heat treatment may be needed to meet desired properties. This process provides the near net shape and mechanical properties required for meeting the specifications.

The making of a steel casting is a long and complex process. A large investment in capital equipment is required for the melting of steel, manufacturing of cores and moulds and the cleaning and heat treating of castings. Additional major investments for support equipment and facilities are required for sand reclamation systems, dust collection devices and bulk material handling systems etc.

Steel castings are used for vitally important components in the mining, railways, automotive, construction, military, and various industries including oil and gas industries. Steel castings are specified for applications which require weldability, abrasion resistance, high strength, low and high temperature service and corrosion resistance. Though there are large numbers of steel foundries, yet due to the diversity of market requirements such as size, tolerances, chemistry, volume, etc., a single foundry cannot serve all of the market and each foundry tends to specialize in a portion of the total market. Some of the specialized areas are (i) railways, construction equipment, and truck and mining industries, and (ii) high alloy stainless steel used in corrosion and heat resistant applications or low volume prototype and service parts. Examples of items which are produced in the form of steel castings include (i) hydroelectric turbine wheels, forging presses, gears, railway wagon frames, valve bodies, pump casings, mining machinery, marine equipments, turbocharger turbines, and engine cylinder blocks etc.

Continuous casting machine

Reheating furnaces in steel Industry

In steel plants reheating furnaces are used in hot rolling mills to heat the steel stock (Billets, blooms or slabs) to temperatures of around 1200 deg C which is suitable for plastic deformation of steel and hence for rolling in the mill. 

Different type of batch and continuous furnaces are described below.
1.Batch furnace -These are the older type of furnaces which are capable of heating all grades and sizes of steel. 
2.Continuous pusher furnace– In this type of furnace cold steel stock is pushed forward with the help of pushers at the charging side. 
3.Rotary hearth furnace – A rotary hearth furnace is used for heating round billets in pipe plants and for heating short length blooms or billets in a forging plant.
4.Walking beam furnaces – Initially walking beam furnaces were designed with alloy steel walking beams which were exposed directly to the furnace heat and were also subjected to heat corrosion. 
5.Walking hearth furnaces – It is similar to the walking beam furnace when passage of steel stockl through the heating chamber is considered.
6.Roller hearth reheating furnaces – Roller hearth furnaces are used to advantage when heating very long billet, bloom or slabs in the situation where it is not practical for heating in a pusher or walking beam furnace.

Today we are talking about is continuous pusher furnace,Advantages of the pusher type furnaces are as follows:

• High production per unit capital investments

• High hearth area efficiency

• Higher specific production per unit of space utilized.

• Low maintenance cost

• Ease of charging and discharging of material

• Lower temperature differences between two pieces of material pushed.

• More control of the rate of heating at all temperature levels.

• Gradual rise in temperature permits charging of all grades of cold materials.

• Can be built for larger length of the piece to be heated to have higher rolling mill yield

Re-heating furnace

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

Effective management of energy in steel plant

In recent years, the need for a more rational and efficient management of energy has emerged as a strategic and urgent issue for an integrated iron and steel plant. Today energy plays an important role in the operation of the steel plant and inefficient use of energy has severe adverse effect on the plant bottom line. In fact, energy costs make up a large percentage of total operating costs. This has made the management of the steel plant to focus its attention on the use of energy in the plant and the efficient management of energy usage has become one of the prime objectives for the management of every steel plant. Active and efficient management of the energy not only helps in the energy conservation and minimization of environmental impact but it is also crucial in ensuring the competitiveness of the steel plant.

Effective management of the energy results into the following.

1. It provides opportunities to decrease the energy intensity/ton of crude steel.

2. It provides best or good practices to utilize energy sources more effectively

3. It provides best or good practices to recover energy (heat, and gas etc.) wherever practical

4. It enables the steel plant to develop plans for plant energy intensity reduction.

5. It helps prioritization of the capital investments for improving the energy efficiency with the biggest impact.

6. It optimizes purchase and consumption of all fuel types and energy inputs.

7. It provides opportunities to reduce carbon di oxide (CO2) and other emissions.

Types of energy used in the steel plant:

Purchased energies: Fuel energies, electricity

Generated energies: Byproduct fuels, electricity

Other energies: Chemical, pressure, steam and hot air

The management of energy in the steel plant has several components which need serious attention. These components are described below.

Quality of energy Quality of raw materialsProcess stabilityInefficient and inadequate maintenance Line losses, leakages and flaringHandling of solid wastesSize of the equipment, etc
Effective management of the energy cannot be done alone either by the energy department or by the individual production shop. It has to be  team effort with the participation of every one.

Fujian Putian Geili Machinery manufacturing Co., Ltd was founded in 2006, the registered capital of 20,000,000 yuan. The company is located in one of the city center onn the west side of the Straits Economic Zone, Xianyou Putian. As a professional and experience manufacturer in China, we can supply designing, manufacturing, installation and commissioning of the equipment with "turn-key" service.

Two high Rolling mill

Principles of Metal Rolling

Metal rolling is one of the most important manufacturing processes in the modern world. The large majority of all metal products produced today are subject to metal rolling at one point in their manufacture. Metal rolling is often the first step in creating raw metal forms. The ingot or continuous casting is hot rolled into a bloom or a slab, these are the basic structures for the creation of a wide range of manufactured forms. Blooms typically have a square cross section of greater than 6x6 inches. Slabs are rectangular and are usually greater than 10 inches in width and more than 1.5 inches in thickness. Rolling is most often, (particularly in the case of the conversion of an ingot or continuous casting), performed hot.

Most metal rolling operations are similar in that the work material is plastically deformed by compressive forces between two constantly spinning rolls. These forces act to reduce the thickness of the metal and affect its grain structure. The reduction in thickness can be measured by the difference in thickness before and after the reduction, this value is called the draft. In addition to reducing the thickness of the work, the rolls also act to feed the material as they spin in opposite directions to each other. Friction is therefore a necessary part of the rolling operation, but too much friction can be detrimental for a variety of reasons. It is essential that in a metal rolling process the level of friction between the rolls and work material is controlled, lubricants can help with this. A basic flat rolling operation is shown in figure:130, this manufacturing process is being used to reduce the thickness of a work piece.

During a metal rolling operation, the geometric shape of the work is changed but its volume remains essentially the same. The roll zone is the area over which the rolls act on the material, it is here that plastic deformation of the work occurs. An important factor in metal rolling is that due to the conservation of the volume of the material with the reduction in thickness, the metal exiting the roll zone will be moving faster than the metal entering the roll zone. The rolls themselves rotate at a constant speed, hence at some point in the roll zone the surface velocity of the rolls and that of the material are exactly the same. This is termed the no slip point. Before this point the rolls are moving faster than the material, after this point the material is moving faster than the rolls.

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

Crank Flying Shear

Advantage and importance of investment casting

Investment casting is an industrial process based on and also called lost-wax casting, one of the oldest known metal-forming techniques. 

Investment casting can make use of most metals, most commonly using aluminum alloys, bronze alloys, magnesium alloys, cast iron, stainless steel, and tool steel. This process is beneficial for casting metals with high melting temperatures that can not be molded in plaster or metal. Parts that are typically made by investment casting include those with complex geometry such as turbine blades or firearm components. High temperature applications are also common, which includes parts for the automotive, aircraft, and military industries. The process is generally used for small castings, but has been used to produce complete aircraft door frames, steel castings.

Tundish for CCM

Advantage:
1. Many Intricate forms with undercuts can be cast.
2. A very smooth surface is obtained with no parting line.
3. Dimensional accuracy is good.
4. Certain unmachinable parts can be cast to preplanned shape.
5. It may be used to replace die-casting where short runs are involved.


Fujian Putian Geili Machinery manufacturing Co., Ltd was founded in 2006, the registered capital of 20,000,000 yuan. The company is located in one of the city center on the west side of the Straits Economic Zone, Xianyou Putian. The company has perfect management mode, advanced processing technology, is a set design, production, sales of machinery, complete set of equipment in continuous casting machine and rolling mill equipment based professional company.

Continuous casting is a new energy-saving technique to casting the molten steel to a section shape or a certain size billet continuously and continuous casting machine is the equipment to complete this process. It includes pouriong equipment,  major equipment, cutting area equipment, dummy bar collection and transmission equipment. And rolling mills is a kind of equipment which can implement of a roll forming process. It includes major equipment, auxiliary equipment, lifting and transport equipment and ancillary equipment.

Continuous Casting Machine of Crystallizer