Medium-Frequency Induction Furnace Equipment

• Customized: Customized
• Condition: New
• Working Frequency: 500Hz
• Rated Capacity: 15 T
• Rated Power: 7500kw
• Melting Rate: 11.5t/H
• Model NO.: Medium frequency furnace
• Transport Package: Export Package
• Specification: as customer demand
• Trademark: asyy
• Origin: China Liaoning
• HS Code: 4101201110

Product Description

Name		Unit	Parameters	Remark
A: Parameters of furnace melting system
Rated capacity		t	15
Rated temperature of outlet liquid steel		ºC	1600~1650
Melting rate		t/h	11.5	1450ºC, rate of return≥98%, thermal state, continuous
Electricity consumption		°/t	620-650	1450ºC, rate of return≥98%, thermal state, continuous
Working frequency		Hz	500	Center frequency
Id of induction furnace inductor		mm	Φ1460
Height of induction furnace inductor		mm	2000
Voltage of inductor		V	3400	Medium-frequency output multi-voltage
Cooling water used for furnace	Cooling water supply pressure	Mpa	0.25~0.3
	Water inlet temperature	ºC	5~35
	Water outlet temperature	ºC	≤55
	Flow (furnace body)	t/h	400
	Temperature rise of circulating cooling water	ºC	10
Hydraulic system	Working pressure	Mpa	12	(electronic control)
	Flow	L/min	20
	Hydraulic medium		Anti-wear hydraulic oil (offered by user)	Parameter of anti-wear hydraulic oil: Summer: N68; winter: N46
	Hydraulic cylinder diameter	mm	Φ18
B: Parameters of medium-frequency electrical system
Rated power		KW	7500
Medium-frequency power three-phase primary voltage		V	1000
Power rectification mode			12 pulse
Phase current		A	4500
Power cooling water	Cooling water supply pressure	Mpa	0.1~0.2
	Water inlet temperature	ºC	5~35
	Water outgoing temperature	ºC	≤55
	Power circulating cooling water flow	t/h	180
	Power circulating cooling water temperature rise	ºC	20

Advantages introduction of equipment main components 

 

1,Intermediate frequency power supply

(1),Working principle

 

 

Via three-phase main frequency AC power and three-phase bridge rectifier, the power supply becomes to be adjustable DC power supply. Then via reactor smoothing and after smoothing, it is transmitted to single-phase inverter bridge. Via pulse control,single bridge diagonal alternative switch becomes single phase 100~2500HZ intermediate frequency current. Resonant tank is made up of induction coil and compensator capacitor and transmits current to induction coil. Current makes metal furnace burden in the inductor create intermediate frequency swirl, and furnace burden is heated to melt.

(2),Main component-electric reactor

Our company adopts water cooling reactor and dry type reactor . All the standard equipment adopt water cooling reactor. Along with the equipment development going deeply and high-end customers increase, the requirements of reactor are getting higher and higher. At present, the dry reactors of our company to high-end customers has very low failure rate, saving power 2~3%. It  is choosing part.

(3),Main component- thyristor 

Thyristor used by our company has stable quality, strong anti-current impact ability, extremely not easy to damage. Cost is higher 20%~30% than that of the same industries.

(4)Main component- main control circuit board Circuit boards used in the thyristor series connection, parallel connection of intermediate frequency power are self-developed and self-produced by our company. Engineers in the R&D center updates and improves circuit board in real time, and ensure our company is in the advanced level in the industry. Circuit boards produced and welded are tested by our company's special QC person and inspect one by one, to avoid unqualified product getting out of factory and ensure safety of equipment use.

 

2,electric capacitor cabinet:

 

(1),working principle

 

capacitor cabinet and induction coil are series or parallel connection for compensating inductive reactive power of induction coil and forming a resonant tank with coil so as to achieve proper frequency and equivalent impedance. After compensating, all medium-frequency need to provide are active power and a little reactive power which can greatly decreased the capacity of medium-frequency power. 

 

    Large power induction furnace needs large quantity of compensating capacitor. In order to reduce space and electromagnetic leakage, the capacitor of our company adopts particular double installation mode. Water-cooled bus of large current is ordered by special mould, making water-cooled cavity and copper plate just need one shape, no need to weld. So there is no oxidization, ensured high efficient of water-cooled and conduction.   

 

(2),main components and parts-electric capacitor 

 

The capacitor produced by our company has the advantage of first-class quality and strong overvoltage ability which win the praise of users by long-term use.

 

3,Coreless induction furnace body

(1)working principle

 

It adopts magnet yoke hydraulic transmission structure of steel shell, is composed of furnace fixed mount, furnace frame, induction coil, yoke furnace tilting mechanism and water-cooled cable.

 

Furnace fixed mount is welded by section steel and steel plate. Weld fixed mount on furnace basic embedded part during installation at site.

 

Furnace frame is welded by frame type cylinder made from thickness steel plate ring and  joist steel which ensured the rigidity of inductor and furnace lining. Support rib on furnace bottom adopts radial arrangement which is easy for heat dissipation and maintenance.

 

  Active furnace frame is used for installing induction coil and magnet yoke which is welded by section steel and steel plate. It is adopting semi-closed structure .The top operating platform of active furnace frame use thickened steel plate so as to increase strength of furnace frame and bearing capacity. Furnace cover is on the active furnace frame and drived by machine or oil hydraulic. In order to ensure reliability of furnace cover operating, jacking and revolving oil of hydraulic driven type adopts two cylinders drive independently.   

 

 

 

 

(2)main components and parts-magnet yoke

 

Magnet yoke is made of high-quality silicon steel sheet,two sides clamp by stainless steel plate. After optimization design by microcomputer and precision production,profile curved structure and the radian excircle of induction coil are the same. Magnet yoke has a large cover area to induction coil. The method to fix magnet yoke is making it stick close to induction coil. There are  high temperature and voltage resistance insulation mat layer between them and outside use M24 lead screw tightly against to the stainless steel plate on the back of magnet yoke.

 

The inner side of magnet yoke stainless champing steel plate is equipped with special designed water-cooled radiator which ensured the temperature of magnet yoke keeps normal temperature, avoid transformation of magnet yoke by temperature rising.  In this way, strengthened supporting for induction coil, improved the general intensity of furnace.

 

4,Closed loop inside and outside cooling machine 

5,Detection device of furnace lining thickness 

6. PLC Equipment Operation Monitor System

Liaoning JinRong Machinery Import and Export Co.,LTD,AnShan Ying Yat Trade Co.,Ltd, located in the northeast region of the largest steel industry city,it has the reputation of "the steel capital of the republic"--Anshan. The specific address is Qianshan West Road, Tiexi District, Anshan City, Liaoning Province. We always adhere to the customer first, with sincere service to impress customers, to "honest and trustworthy, customer first" as the principle, and in terms of products and to "quality-oriented, keep improving" as their own practice standards, and strive to provide customers with a full range of quality services at the same time, but also make the enterprise get long-term development. Machinery equipment production and processing machinery industry quality enterprises. The company mainly metallurgical equipment, with research and development, design, production, installation, commissioning, trial production, one-stop services. We mainly produce rolling equipment, continuous casting equipment and auxiliary equipment for steel mills.Wire, bar, strip, section steel and other long steel rolling production line equipment manufacturing and engineering contracting services. Full experience of steel production line general contracting service. Various mature steel rolling production lines can be customized according to user requirements, such as high-speed bar, high-speed wire, sectional material, H steel, strip steel, ordinary bar, ordinary wire, etc. It can provide process design, equipment manufacturing, equipment installation, equipment debugging, etc. of all equipment in the production line, shortening the production time for customers, improving market competitiveness faster, and creating economic benefits faster.
According to the actual needs of users, the annual output of our production line can range from tens of thousands of tons to more than one million tons; the rolling speed can range from 5m / S (or even lower) to 105m / S; the operation control ability of the equipment can range from manual auxiliary operation to fully automatic operation; the total investment of the project can range from millions of yuan to more than 100 million yuan, fully meeting the needs of users. Industrial automation equipment. In metallurgical industry, factory power distribution, electrical automation control design, metallurgical electrical equipment including high-speed wire, bar, strip and other DC speed control equipment, continuous casting automatic control system, blast furnace and converter automatic control system, etc. The company has established many steel production lines, continuous casting and rolling high-speed bar production lines for many countries, and has rich experience in general contracting of steel production lines. Excellent after-sales service, products have been highly praised by users. The company produces and processes 2-high temper mill, 4-high reversing cold mill, 6-high reversing cold mill, 12 high mill, 3-continuous mill, 4-continuous mill, 5-continuous mill, hot rolling mill, finishing mill, straightener, pickling line, etc. Focus on the production of heavy-duty cold and hot rolling mills, hot rolling mills, wire rod mills, rebar mills, section steel mills, strip mills, H-beam mills, continuous casters, slab continuous casters, and billet continuous casters , Rectangular billet continuous casting machine, special-shaped continuous casting machine, ingot casting machine, various large riveting and welding parts, and various machining parts, various large castings, and various mechanical accessories, as well as making various furnaces for smelting. Blast furnace, converter, refining furnace, intermediate frequency furnace, electric arc furnace, submerged arc furnace, heating furnace, our equipment from smelting to continuous casting to steel rolling, continuous casting and rolling, equipped with dozens of large CNC milling and boring machines, 5m*16m, 3.2m *16m CNC gantry milling machine, four-axis vertical machining center, 6.3m vertical lathe, 3.2m gear hobbing machine and more than 250 various metal cutting machine tools, with 200t, 100t, 75t, 50t, 32t and other bridge cranes. Riveting Welding and machining have become one of the machining bases with strong comprehensive processing capabilities. The company's mechanical equipment and leading turnkey projects are more favored and praised by customers all over the world.