Round steel forging furnace

Introduce：a rod, bar, heating the steel, there is provided a method selection round forging furnace, round forging furnace heating power and power selection algorithm beats, bar forging furnace Power Calculation, round Steel forging heating furnace technical solution , round steel forging heating furnace complete sets of equipment quotation .

Consultation

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Introduction

Consultation

First, the round steel forging furnace overview:

1.1 , workpiece technical parameters and technical requirements

Workpiece: a round steel.

Burning material diameter: ¢ 120 mm.

Workpiece length: 80mm-150 mm

Heating Weight: 7 kg -13.5kg (estimate)

Heating temperature: 1150 ~ 1200 °C

Heating efficiency: 1 1 00KG / hour

1.2 , round steel forging furnace power supply selection and heating cycle algorithm

The power of the round steel forging furnace is generally calculated according to the following formula:

P = (C × G × (T2 - T1)) / 0.24 × t × η

Where: P —— power supply (unit: KW )

t ——heating beat (unit: second)

G ——Heating weight when heating the beat (unit: kg )

T 2 - heating temperature (unit: °C)

T 1 - initial temperature (ambient temperature) (unit: °C)

C —— specific heat of the metal to be heated (unit: kilocalories / kg · ° C)

For carbon steel, C=0.168 kcal / kg·°C

Η——heating efficiency: ( 0.5 to 0.7 )

Calculate the above table according to the above formula, calculate the power supply for different weights and different beats.

1.3 Round steel forging heating furnace power frequency selection:

The choice of power frequency follows the principle of optimal heating efficiency and temperature uniformity (core temperature difference). The higher the frequency, the higher the heating efficiency, but the too high frequency is likely to cause the surface of the workpiece to be too burnt. According to our experience, the frequency is selected to be 2500KHZ. , the best heating effect can be obtained without causing the workpiece to burn.

1.4 sensor manufacturing process:

The ratio of the inner diameter of the inductor coil to the outer diameter of the blank is within a reasonable range and is designed according to the process parameters provided by the user. The inductor coil is made of large-section T2 rectangular copper tube after annealing, winding, pickling, hydrostatic test, baking, mica tape, glass ribbon double insulation, drying, knotting, assembly and other main processes, and then fixed to As a whole, the entire inductor is formed into a rectangular parallelepiped, which is vibration-resistant and holistic.

The water-cooled furnace mouth copper plate is protected at both ends of the inductor, and the electromagnetic radiation is effectively prevented from causing harm to the operator.

Insulator inner diameter size : The inner diameter of the inductor copper coil needs to be lining to protect the copper coil of the inductor. The inner diameter of the coil is determined by the heating efficiency. The general design specification is: workpiece +50 = inner diameter of the coil, and the lining needs to have sufficient strength. It does not crack or deform when heated, and the inner diameter of the lining and the diameter of the blank need sufficient clearance to ensure that the blank can pass smoothly without touching the lining. At the same time, it should also take into account the change of the blank and the phenomenon that the lining of the billet is raised due to the uneven end surface of the billet and the lining of the billet is in contact with the lining. Therefore, when the inner diameter of the coil is constant, the larger the inner diameter of the lining is, the more advantageous the workpiece is in the case of ensuring the strength of the lining.

Induction lining : It adopts a more practical segmental integral casting knotting process. At the same time, the center knotting method is generally adopted when knotting the lining to improve the pressure resistance of the blank when entering, thereby improving the service life of the lining. At the same time, such a knotting process makes the blank in the middle of the inductor, which is favorable for the uniform heating temperature of the billet, and more in line with the principle of the proximity effect in the three effects of electromagnetic induction.

In the theoretical design, the temperature difference of the workpiece core is considered at 10 °C. However, after the workpiece is discharged, it takes a while to transfer to the forging position. The heat conduction of the workpiece can reduce the temperature difference of the core surface and tend to be consistent.

Second, product implementation standards:

1.JB/T4086-85 "Technical Conditions for Electronic Control Equipment for Medium Frequency Induction Heating"

2.GB/T10067.3-2005 "Basic technical conditions of electric heating equipment · Induction electric heating equipment"

3.GB/T10063.3-88 "Test methods for electric heating equipment"

4.GB/T5959.3-88 "Electric heating equipment safety"

Third, the complete set of equipment:

1.KGPS 4 00KW/2500Hz power supply (series circuit) 1 set

2. Furnace frame (including capacitor group, water circuit, circuit, gas path) 1 set

3. Sensor: GTRØ 120 x 15 00 1 set

4. This lead / copper (power to furnace) 1

5. jacket closed cooling tower 1

Fourth, the equipment mechanical system work process:

Manual loading on the conveyor belt → Electric transmission pusher → furnace heating → discharge → forging machinery

5. Technical plan for round steel forging furnace:

1 , electrical parts:

( 1 ) Main technical indicators of intermediate frequency power supply:

Power supply model: KGPS 4 00KW/2500Hz

Input voltage: 380V ( 50Hz )

Input current: 80 0A

Output voltage: 750V

Output power: 4 00KW

Rated frequency: 2500Hz

( 2 ) Basic principle and control system of intermediate frequency power supply:

The basic principle of the intermediate frequency power supply is to convert 50Hz three-phase power frequency alternating current into direct current through a three-phase bridge rectifier circuit, and then filter through the reactor, and finally invert the direct current into a single-phase medium frequency current supply through the inverter. Load, so this device is actually an AC-DC-AC converter; the load is a resonant circuit composed of an induction coil and a compensation capacitor.

2. Mechanical part

The mechanical part is composed of a hob, a feeding mechanism, a discharging mechanism and the like, and the action setting and the heating tact are performed by a relay.

( 1 ) Feeding mechanism

The feeding stroke is controlled by the relay, and the discharging port is equipped with a chain quick discharging mechanism so that the material does not collide with the outlet end of the furnace body.

( 2 ) hob

It is a welded steel component, internal water-containing road, circuit, pneumatic components, etc. Above is the sensor.

Sixth, user-owned projects

1. The three-phase line 380V × 3-50Hz 5 00kvar a transformer

2. Basic civil works: implemented according to the supplier's basic drawings

3. Cooling circulating water: 0.2-0.3mpa water pressure, inlet and outlet water pressure difference is greater than 0.18mpa , water flow rate is 60 m 3 /h , influent water is 5-30 °C, outlet water temperature is less than 55 °C, circulating pool, no cooling tower 100m 3 pool. It is recommended that customers choose plate heat exchangers because soft water is in a closed circulation system and there is no entry or blockage of impurities.

Seven, round steel forging heating furnace complete sets of equipment quotation:

Serial number	Name	Specifications / Model	Quantity	Introduction	Price ¥(yuan)
Electrical parts	3- phase 6-pulse IF power cabinet	KGPS- 4 00KW/2500HZpower cabinet 1 set.	1 set		75000
	Rectified thyristor	KP 8 00A/1 6 00V	6	Xiangfan platform /parameter consistency
	Inverter thyristor	KK 8 00A/1600V	4	Xiangfan platform /parameter consistency
	Power busbar	50x6 galvanized copper row		Antioxidation, small value of conductive resistance.
	Induction heating furnace	120 mm *1500	1 set	T2 oxygen-free copper tube winding wall thickness 3mm /copper plate closing surface / / 304 stainless steel quick-change joint.	50000
2. Resonant capacitor cabinet		Water circuit, resonant capacitor	1 set		30000
3. Installation Materials		Water-cooled copper pipe and water pipe steel clamp	1 set	Power supply to capacitor cabinet connection	20000
5. Closed cooling tower		30 Dun	1 set	Soft water cooling, automatic control.	65000
6. Random data		Product drawings and instructions	1+1	Operating procedures and instructions	free
Total (ten thousand yuan)		Including tax, including freight, including instructional installation fee, training fee . Free use within one year of normal use			Total: ¥240000 Yuan