PC Steel Bar Complete Induction Heating Equipment

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Tianjin
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1 unit
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25 unit/month
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Application Scope

Steel Bar for Pre-stressed Concrete

Production and processing of PC steel bar (Steel Bar for Pre-stressed Concrete), quenching and tempering heat treatment of metal wire.

 

Function Structure

      PC steel bar production line is complete automatic control: several sets of medium frequency/super audio frequency power supply accomplish pre heating, heating, quenching and tempering of steel bar online. Realize synchronization control of production line by several sets of inverters driving the mechanism.

     There are totally four sets of heating power supply of PC steel bar production line, the power and frequency of which are designed to be: 600kW/8kHz, 200kW/30kHz, 200kW/50kHz, 300kW/8kHz. The power supply adopts parallel IGBT induction heating power supply. It is just because of online heating that there’re strict requirements concerning working status and synchronization control of the power supply.

      The parallel IGBT induction heating power supply adopts AC-DC-AC variable frequency power supply structure. The rectifier of the power supply adopts 3-phase thyristor rectifying or diode and IGBT chopper mode. The inverter adopts high voltage large power IGBT module and large power fast recovery diode to form inverter power unit. The resonant tank circuit adopts parallel resonance.

      The whole unit of equipment is composed of four sets of induction heating equipment, water cooling system, console, automatic control system and mechanism system. 

product picture

感应加热设备 金属热处理 动态无功补偿 PC钢棒 高频焊机 高频开关电源 感应加热设备 金属热处理 动态无功补偿 PC钢棒 高频焊机 高频开关电源

 

 Technical features

Excellent heating power supply design

1.   Power supply cabinet and heating tank circuit adopt independent design with compact structure and small size which is convenient for site layout.

2.  The heating inductor is characterized by high heating efficiency of whole line and stable heating technics by optimization design.

           3.The power supply selects DC chopper mode to ensure the grid side      power coefficient≥0.92 and a relative lower harmonic content.

           4.Adopt      CPLD full digital control system, automatic fixed angle, high precision of      phase-lock and wide scope of phase-lock. Perfect protection function, reliable      working and low failure rate.

           5.High      standard power supply electromagnetism compatibility design and closed      cabinet design to meet the strict requirements at site.

 

Ø   perfect automatic control of whole line

1. Adopt Siemens S7-300 PLC and colorful touch screen to form whole line automatic control center, which is flexible and high cost performance.

2. Having speed-power automatic matching function, which can realize full scope automatic control to different PC steel bar specification and heating speed.

3. Adopt Siemens for transducer (or specified by the user) and US Raytek for pyrometer.

4. Friendly HMI and fault diagnosis system, which is convenient for operation and maintenance. 

     



感应加热设备 金属热处理 动态无功补偿 PC钢棒 高频焊机 高频开关电源

感应加热设备 金属热处理 动态无功补偿 PC钢棒 高频焊机 高频开关电源

Main Technical Parameter


               Model               AC input              Power coefficient                  Rated DC voltage                Rated DC current               Frequency scope   Heating mode
                GZP-600/8                3AC380V
50/60Hz
               

Thyristor rectifying

0.92
                500V                1200A                6-
10 kHz
               Pre-heating
               

IGBT chopper

0.95
                GCYP-200/30k                3AC380V
50/60Hz
               

Thyristor rectifying

0.86
                450V                450A                25~
30 kHz
              heating
               

IGBT chopper

0.95
                GCYP-200/50k                3AC380V
50/60Hz
               

Thyristor rectifying

0.86
                450V                450A                40~
50 kHz
             Quenching 
   

IGBT chopper

0.95
                GZP-300/8                3AC380V
50/60Hz
   

Thyristor rectifying

0.92
                500V                600A                6-
8 kHz
               Tempering
             

IGBT chopper

0.95


Can be customized as per user’s grid and heat treatment technics. 


Operation parameter

Steel No. 30MnSi

               Specification                7.1 mm                9.0mm                10.7mm                12.6mm
              Linear speed                60~110m/min                40~100m/min                30~90m/min                20~60m/min
               Quenching temperature                860℃~960℃                860℃~960℃                860℃~960℃                860℃~960℃
               

Tempering

Temperature 
                360℃~460℃                360℃~460℃                360℃~460℃                360℃~460℃
              Power consumption per ton                ≤375kW.h /T                ≤370kW.h /T                ≤370kW.h /T                ≤370kW.h /T
                Tensile strength                >1420Mpa                >1420Mpa                >1420Mpa                >1420Mpa
              Elongation                >5%                >5%                >5%                >5%

Q:What are the combustion equipments used in industrial boilers?
The main auxiliary equipments of the general boiler are: upper coal machine, ash blower, blower, draught fan, economizer, feed pump and water treatment unit. Oil boilers are: oil pumps, burners, tanks and so on.
Q:What are the companies in the world that are currently engaged in metallurgical furnaces?
Each manufacturer has its own industry and technological advantages.If you say that the performance rankings, turnover, and so on, it seems that no one has done this ranking.
Q:Selection of heat preservation material for industrial furnace
Micro nano heat insulation board.The thermal conductivity of micro nano heat insulation board is very low, only a fraction of the traditional thermal insulation material, and the insulation effect is very efficient.
Q:Why does the burner of industrial furnace burn occasionally?
The basic structure of the complete ignition system is the ignition device and flameout protection device. The ignition burner includes an ignition electrode and an igniter (equipped with some external type transformer, voltage transformer) through the above 10kV, the ignition electrode spark ignition of high voltage discharge to ignite gas column.
Q:How many kinds of industrial electric furnaces are there?
Industrial furnace according to the heating mode is divided into two categories: one is the fuel furnace, combustion heat with solid, liquid or gaseous fuel in the furnace for heating the workpiece; the second is in the furnace, the furnace converts electrical energy to heat the heat.
Q:What is industrial furnace masonry?
Before masonry construction, the pre process and parts that may affect the quality of masonry work shall be re tested,masonry construction shall be carried out according to the datum central line and the datum elevation.
Q:Brief introduction to repair of industrial furnace
Although the number of industrial furnaces in general machinery plants is not large, the number of large repairs per year accounts for 16%-20% of the total number of repairs for all equipment, and the large repair costs account for about 18%-25% of the total repair cost of all equipment.
Q:How to use industrial furnace equipment?
If it is water cooling furnace door, but also to ensure the smooth flow of pipes, winter pipes are not frozen. When the boiler is in a limited position, the interlocking device for cutting off the power supply shall be provided when the furnace is in and out, and the number of broken wires in the pitch of the steel wire shall not exceed 10%, and the counterweight of the furnace door shall be reliably hung.
Q:What is the difference between industrial furnaces and boilers?
Hot water or steam generated in the boiler can directly provide necessary energy for industrial production and people's life, but also by the steam power device is converted to mechanical energy, or through the generator converts mechanical energy into electrical energy. Hot water boilers are called hot water boilers. They are mainly used in daily life, and are also used in industrial production. Steam generating boilers are called steam boilers, often referred to as boilers. They are used in thermal power stations, ships, locomotives and industrial and mining enterprises.
Q:What is an industrial furnace pit?
The creation and development of industrial kilns play an important role in the progress of mankind. Chinese appeared more perfect in the Shang Dynasty copper smelting furnace, furnace temperature is up to 1200 DEG C, up to 0.8 meters in diameter kiln stove.

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