Vacuum melting furnace: vacuum furnace technology

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2017年5月19日星期五

The vacuum induction furnace USES considerations

In the process of induction smelting, be careful and careful. In the process of operation, you should pay more attention to the safety of the person and protect the equipment.
During vacuum induction melting operation part, should be carried out in accordance with the relevant operation process, if not in accordance with the operating rules, is easy to vacuum pump body is damaged, resulting in a serious accident, will not only harm health, life and damage to equipment will also have a certain role.
In smelting operation, should beware of electric shock, such as electrode, rotating electrode copper wires, copper power supply box with a certain capacity, so be sure to properly insulating protection, so it can avoid electric shock. At the same time also need to protect good eye, if the temperature is too high, need to cover the observation hole of the baffle, if is necessary, you will need to wear sunglasses.
In the process of smelting, be careful to maintain a good environment and be aware of ventilation, and the mechanical pump's windpipe is needed to reach the outside of the window. You also need to dry the floor and not allow water. In the process of smelting, the circulation of circulating water should be guaranteed.
After all the operation, if you need cooling water, it will take a period of time, usually two hours.
After a period of time in the use of vacuum furnace, vacuum furnace shall be clean, especially the dead Angle, easy accumulation of dirt, in the process of wiping the vacuum furnace to pay attention to safety. If the flammable liquid such as alcohol and acetone is used to clean the vacuum furnace, the body should be above the vacuum furnace.
In the course of operation, fire prevention should be prepared. In the course of operation, wear the work clothes and gloves. Masks, try not to reveal the skin.

2017年5月17日星期三

The structural characteristics of vacuum induction furnace

Description: the vacuum induction furnace is characterized by a sealed furnace shell outside the sensor and a pumping system
Vacuum induction furnace is the process of smelting and pouring under vacuum. It is characterized by a sealed furnace shell outside the sensor and a pumping system. The furnace cover of the furnace can be opened. Crucible, sensors and ingot mould is put inside the furnace shell, crucible sensor structure is the same as ordinary induction furnace, can be mounted on the furnace shell under the vacuum loading, temperature measuring and sampling device, and is equipped with observation holes. The furnace shell is cooled during the smelting process, the furnace shell is sealed and vacuum, the limit of vacuum is 0.01 ~ 0.001 Pa, and the vacuum is 0.1 Pa. The vacuum of the large vacuum induction furnace is lower than the small vacuum induction furnace.

2017年5月15日星期一

The vacuum furnace system is mainly composed

The vacuum furnace system consists mainly of vacuum system, heating system and relevant control equipment.
The vacuum system consists of mechanical pump, diffusion pump, main road valve, bypass valve and high vacuum damper. The mechanical pump is a crude vacuum device, which is powered by a three-phase ac motor, and the work and stop of the pump is realized through the contact of ac contactor. High vacuum oil diffusion pump for high vacuum device, with the former mechanical pump and diffusion pump oil level, and the function of electric furnace heating extraction of the high vacuum degree requirements, through absorption and disconnect ac contactor control the on and off of electric heating furnace, and then control the action of diffusion pump and stop.
Heating system is composed of heating power and heating element, heating power magnetic voltage regulator, using dc excitation power supply for contactless smooth stepless voltage regulation of load, the dc excitation power supply controlled by power governor, governor using temperature controller and power detected by thermocouple temperature current value and the difference between the set value, the PID arithmetic, the output of 4 ~ 20 ma dc signal, control magnetic voltage regulator of magnetic saturation voltage, and then according to the set temperature control curve of temperature controller to realize the heating current and temperature automatic control.
In the design of the distributed control system, make full use of the computer a powerful computing and data processing function, timely monitoring system working condition, especially the introduction of intelligent automatic setting of PID parameters, further enhance the control index of the vacuum furnace system.

2017年4月6日星期四

Induction melting furnace in iron industry

In the iron industry, the two most commonly used to induction melting furnace were power frequency induction furnace and intermediate frequency induction melting furnace.
First for medium frequency induction melting furnace, its strong adaptability, the variety of burden or piece of degree is not very strict, so widely used in melting cast iron, its melting alloy cast iron, nodular cast iron and so on need induction smelting products are widely used in manufacturing.
Power frequency induction furnace melting slag is relatively slow, some are not suitable for slagging, production lack of flexibility, cold start need to start, but at the same time it makes heating and metal melting, uniform heating temperature, burning loss is small, can facilitate the regulation of iron liquid ingredients, small relatively dirty. So usually suitable for metals and alloys remelting and heating up.

2017年1月3日星期二

How to improve the service life of vacuum induction furnace lining

Induction of the vacuum furnace lining refractory materials used for the high temperature performance mainly depends on the physical and chemical properties and mineral composition, on the premise of raw and auxiliary materials selection, sintering process is to make the lining have good microscopic structure to give full play to its high temperature resistant performance of the key working procedure. Lining sintering densification degree and refractory material ratio of the chemical composition, particle size, sintering process and sintering temperature and other factors. Ningbo shekinah electric co., LTD., through ten years of trial and error and production test, summarized the knot reasonable construction technology and baking sintering process, the sharp rise in the furnace life, induction furnace life of vacuum furnace dry rammed lining (a long) as much as 1157 times, has obtained the remarkable economic benefits.
Second, the construction process
1, when the furnace building remove mica paper.
2, the furnace building made of crystal quartz sand as follows:
Hand picking, mainly eliminate block and other impurities;
Magnetic separation: the magnetic must be completely removed;
Dry ramming material: must slow drying processing, baking temperature of 200 ℃ to 300 ℃, heat preservation more than 4 hours.
3, the selection of binder: with boron anhydride (B2O3) instead of boric acid (H3BO3) as a binder, the addition amount of 1.1% to 1.1%.

2016年12月23日星期五

Intermediate frequency electric furnace casting low-temperature wax

Intermediate frequency electric furnace casting low-temperature wax mould dewaxing easy preparation, high recovery and reuse pattern material. Faults caused by the low softening temperature strength is low, can not meet the higher requirements for quality castings, low temperature wax stearic acid in the process of using easy saponification deterioration of the casting surface quality, based on the above shortcomings have popped up in the production of medium temperature wax instead of low temperature wax and now the stearic acid price is more expensive, according to the manufacturer with their own way to choose a color.

2016年12月15日星期四

Induction melting operation steps and common fault analysis

Induction smelting step useful check single crystal furnace, try single crystal furnace before formal jobs, single crystal furnace, melting product sampling inspection, adjustment test, the use of single crystal furnace power security, after the completion of these steps can be omitted.
Should be reviewed by induction melting equipment, see if there are any obvious damaged parts, and then according to the requirements of specification to the trial operation, if after trial work is normal, you can begin to formal production, but also constantly in the process of production of check products, to see if some of the products, product quality is qualified, if the index is not up to standard, will adjust the machine quality is unqualified, until melting product quality up to par.
Common single crystal furnace fault are crystal rods, single crystal furnace crystal rod shaking machine can still functioning, but the production efficiency is low, induction smelting products quality is poor so in order to improve the efficiency of the induction melting and quality, not blind smelting, must inspect the single crystal furnace. Crystal rods should inspect lift shaking head, cooling system and vacuum system. If it is lift head appear problem, is under maintenance, changed institutions or rotating mechanism. If it is cooling system and vacuum system appear problem, need to adjust the silicon material and structure of a heavy hammer. There is no problem if you examine these places, see if the inert gas such as argon flow inside the furnace, argon gas flow in the furnace, requires a modified single crystal furnace, the evenness of single crystal furnace thermal field distribution.

2016年12月12日星期一

Technical characteristics of medium frequency melting furnace

Medium frequency melting furnace for melting equipment in cast iron smelting and duplex melting has decades of history, China's manufacturing and labor frequency furnace and medium frequency furnace has a wealth of experience, in the power structure, frequency conversion technology, integrated control, circulating cooling technology and so on many aspects have made remarkable progress. Using medium frequency furnace melting and heat preservation of more and more manufacturers.
Medium frequency melting furnace features:
1) used for smelting medium frequency melting furnace, at present can be made in a single capacity also can achieve nearly tons, can meet the needs of the mass production. But many enterprises power capacity expansion is often difficult to overcome obstacles. Therefore, medium frequency melting furnace is more suitable for small and medium scale production.
2) commonly used medium frequency melting furnace to melt the various grades of steel and non-ferrous metals. Just for iron casting production, the adaptability of medium frequency melting furnace to product better than the cupola, medium frequency melting furnace can be a variety of high alloy cast iron smelting, such as high chromium cast iron.
3) medium frequency melting furnace are discontinuous melting, interval for a period of time to provide equal to furnace capacity of iron liquid, mode of production for stage duty, medium frequency melting furnace are more appropriate.

2016年11月24日星期四

Excellent performance of vacuum furnace

The pressure inside the chamber of a stove or furnace smoke into industrial furnace is lower than the atmospheric pressure. Vacuum furnace heating power, the heated surface oxidation, no decarburization, small deformation, the mechanical performance is good. Use the vacuum furnace smelting metal to remove impurities, less finished pinhole, segregation of small, good quality. Vacuum furnace is suitable for the high quality, high purity, refractory metal melting and heating, such as tungsten, molybdenum, tantalum, niobium, titanium, heat-resistant alloy steel smelting and magnetic materials, electrical materials of high strength steel, stainless steel, tool steel and die steel, heat treatment.
Before and after vacuum furnace appeared in the 1930 s. In 1927 the United States made electrical material vacuum annealing furnace. Vacuum since 1953 arc furnace power consumption in industry have been used for melting titanium sponge. Before and after the '50 s vacuum induction furnace is widely applied in industry. In 1960 the United States developed oil quenching vacuum furnace.

2016年11月21日星期一

Introduction of refractories in different position of induction melting furnace

The lining of introduction melting furnace is divided into four parts: furnace lid, furnace hearth, throat and and sensor. Especially throat,the most critical position’s refractory material directly affects the life and operating costs of the furnace.
1.Refractory material used in lid
The main effect of furnace lid is to reduce the heat loss of furnace, preventing the metal liquid splash, which requires the lid to be light weight, good insulation effect and anti-corrosion. At present, CCEWOOL ceramic fiber is light weight and low thermal conductivity, thus it is the most ideal refractory lining material. Due to the working temperature of furnace is below 800C, using steel nail or steel mesh to fix the blanket on lid
2.Refractory material used in hearth
The refractory material of hearth should use low porosity and high density CCEWOOL high alumina bricks.
3.Refractory material used in throat and sensor
The structure of throat and sensor is complicated, thus it mostly adopts unshaped refractory material. Castable uses high alumina refractory material, like corundum, mullite.

2016年11月13日星期日

Discharge phenomenon in vacuum induction melting furnace

So shall we talk about, it measures have? Decline in the power supply voltage, increasing turn distance; Choose reasonable furnace coil connection methods are can be reached by effect of electric field strength. However, because of the limitation of by the coil structure, often cannot increase turns distance. Therefore, combined method of coil to become crucial in the planning of induction furnace.
(1) small vacuum furnace induction melting furnace usually choose single induction coil, (can supply voltage) between two terminal voltage of the biggest, interturn voltage is very low. And essential way to prevent this kind of induction furnace discharge is a decline in the power supply voltage, with increased according to the specific conditions of turns distance from (usually turn distance in 5 ~ 10 mm, not too much or it will cause a decrease in the electrical power). In the process of planning practice, most small vacuum induction furnace power use 250 v voltage, will not cause in the process of producing discharge of [3].
(2) large and medium-sized vacuum induction melting furnace sometimes needs to choose the method to connect two or more coils - series (figure 2) (a) or parallel (as shown in figure 2 (b)). Two conditions interturn electric field intensity can present different situation, analysis is as follows.
(a) for the two induction coil in series, in a flash the polarity as shown. Two coil into the electrical terminals (A +), the electrical terminals (B -) adjacent, assume that the supply voltage RMS V. According to the principle of electrotechnics, the two adjacent terminals (A +, B -) between the voltage amplitude was flat, in the opposite direction. For a maximum of 2 V. Maximum instantaneous field strength for/air gap.
(b) for the two induction coil in parallel, in a flash the polarity as shown. Two coil into the electrical terminals (A +), (B +) adjacent, assume that the supply voltage RMS V. According to the principle of electrotechnics, the two adjacent terminals (A + B +) between the voltage amplitude was flat, direction. For a maximum of 0. The maximum instantaneous field intensity is zero. The above analysis of vacuum induction melting furnace discharge phenomenon.

2016年11月10日星期四

Intermediate frequency electric furnace safety operation procedures

1, check things out before blowing in electrical equipment, water cooling system, sensor brass etc are in good condition, otherwise prohibited furnace.
2, furnace melting in excess of the prescribed shall promptly repair. It is strictly prohibited in melting too deep inside the crucible for melting.
3, sending and furnace should have someone who's in charge, after sending it is forbidden to contact sensors and cables. On duty shall not leave post, pay attention to the sensor and external circumstance of crucible.
4, loading, should check harmful items such as burden in presence of flammable and explosive mixed with, if you have to remove timely, it is forbidden to cold and wet material directly add to the liquid steel, melted liquid filled with first division after it is forbidden to chunk is expected to join in case cover.
5, and tamped crucible, scrap iron, iron oxide are forbidden to mix, rammed crucible must be compact.
6, pouring fields and official pit furnace should have no obstacle, no water, in case the steel landing explode.
7, molten steel are not allowed to dress too full, hand carry bags when pouring, two of them should be conformed to walk should be smooth, not allowed to walk fast abrupt stop, after pouring yu gang in a designated place, it is forbidden to dump.
8, intermediate frequency generator room should be kept clean, it is strictly prohibited flammable and explosive goods and other debris into indoor, indoor smoking ban.

2016年11月3日星期四

Medium frequency melting furnace main characteristics

Medium frequency melting furnace medium frequency power supply adopts solid-state IGBT inverter and power regulation, is the assurance of high reliability;
Medium frequency melting furnace equipment in the design the all-round protection function like over current protection, owe water protection, overheating protection, over-voltage protection, short circuit protection, open phase protection, etc., more than increase equipment reliability and convenient equipment maintenance work;
Medium frequency melting furnace equipment has a variety of display functions such as frequency display, voltage, current, power, according to make the equipment working condition direct, to design and capacitance induction coil regulation more guidance;
Medium frequency melting furnace super small volume, light weight, portable, covers an area of less than 1 square meters;
Medium frequency melting furnace 24 hours uninterrupted smelting capacity;
Intermediate frequency furnace energy saving energy saving, capable, electromagnetic stirring of molten material more uniform;
Medium frequency melting furnace convenient change different weight, different materials, different ways of the furnace body, to adapt to the requirements of various kinds of melting.

2016年10月31日星期一

Environmental characteristics of medium frequency heating equipment

Medium frequency heating furnace is a kind of will power frequency 50 hz alternating current into intermediate frequency power supply device, the three-phase alternating current (ac) power frequency, after rectification into direct current, then laid adjustable intermediate frequency electric current, direct current supply by the capacitor and inductor in the flow of intermediate frequency alternating current, generate high density magnetic field lines in the induction coil, induction coil, and cutting in cheng fang of metal materials, produce a lot of eddy current in the metal materials.
Professional build medium frequency heating furnace/frequency diathermy equipment series of characteristics of heating furnace, heating speed, high production efficiency, less oxidation decarburization, save material and cost, extend the life of the mold.
Due to the principle of electromagnetic induction medium frequency induction heating, the heat inside the workpiece itself, ordinary workers with intermediate frequency electric furnace to work after ten minutes for the task of forging work continuously, without burning furnace professional workers for burning furnace and furnace work ahead of time. Due to the heating mode heat up fast, so few oxidation, medium frequency heating forging of oxidation burning loss is only 0.5%, gas stove heating oxidation burning loss of 2%, coal-fired furnace reached 3%, intermediate frequency heating process saving material, every tons of forgings and burn coal stove compared to save steel raw materials for at least 20 to 50 kilos. The material utilization rate can reach 95%. Table due to the heating way heating uniformity, core temperature difference, so in terms of forging also greatly increase the service life of forging die, forging surface roughness is less than 50 um technology of energy saving, energy-saving 31.5% ~ 54.3%, the proportion of medium frequency heating oil heating than gas heating energy saving 5% ~ 40%. Heating quality is good, can reduce the rejection rate of 1.5%, increasing production rate of 10% ~ 10%, 10% ~ 15% extend the die life.

2016年10月26日星期三

Medium frequency induction furnace work on what principle

How intermediate frequency induction furnace works, what is the principle of intermediate frequency induction furnace, the following is to introduce: medium frequency induction furnace is a kind of will power frequency 50 HZ alternating current into intermediate frequency (above 300 HZ and 20 k HZ) power supply device, the three-phase alternating current (ac) power frequency, after rectification into direct current, then laid adjustable intermediate frequency electric current, direct current supply by capacitance and induction coil in through the intermediate frequency alternating current, generate high density magnetic field lines in the induction coil, induction coil, and cutting in cheng fang of metal materials, produce a lot of eddy current in the metal materials.
The vortex also has some properties of intermediate frequency electric current, i.e., the metal itself free electrons in the resistance of the metal body flow to generate heat. , for example, put a metal cylinder has alternating medium frequency current in induction coil, metal cylinder has no direct contact with induction coil, electric coil temperature is very low, but the surfaces are heated to redness, and even melt, and the redness and melting speed as long as adjust the size and the strength of the current frequency can be achieved. If the cylinder on the coil center, surrounding the cylinder temperature is the same, the cylinder heating and melting did not produce harmful gases, light environmental pollution.

2016年10月19日星期三

Induction heating furnace of market strategy

Induction heating technology in metallurgical industry heat treatment is a new energy-saving technology. In heat treatment industry, the induction heating furnace because of its fast heating, high energy utilization and energy conservation and environmental protection advantages is widely attention and application of heat treatment industry is a revolutionary technological progress. And iron and steel production, for example in metallurgical industry, iron and steel production points, long, short process, short process of smelting process is based on electric furnace smelting equipment, renewable scrap steel as the main raw material, the production process is beneficial to environmental protection, along with the advance of the electric furnace smelting technology, short process of smelting technology has more and more strong vitality and competitiveness.
There are two kinds of iron and steel production process, short process and long process. Long process consists of the blast furnace, converter, continuous casting and rolling process consisting of; Short process is made up of electric furnace, refining outside the furnace, continuous casting and rolling process. Long process of smelting process for iron ore, coke, coal, limestone and so on scarce resources dependence is extremely strong, is not conducive to environmental protection. At the same time, the discharge of waste gas, waste residue, waste water in the process of production is bigger, dealing with three wastes costs is higher, make long process technology is facing challenges. Short process of smelting process in electric furnace for smelting equipment, renewable scrap steel as the main raw material, is beneficial to environmental protection, in terms of short process of smelting equipment, electric furnace, divided into two kinds of electric arc furnace and induction furnace. Although the traditional electric arc furnace in metallurgical industry occupies a dominant position. But the induction furnace smelting principle makes it have the advantage of innate difference in electric arc furnace.

2016年10月17日星期一

Medium frequency melting furnace cast iron is the development direction

Compared with cupola, using medium frequency furnace iron liquid, can reduce pollution of the environment, is advantageous to the liquid iron quality control, investment is less, and can be easily for nodular cast iron, vermicular cast iron and grey cast iron and other cast iron grade of production, mode of production is very flexible. Compared with using mainly iron ingredients melting scrap steel carburization process smelting iron liquid, can reduce the cost of iron liquid, 1000 yuan.
Medium frequency furnace melting iron liquid, after crushing, processing clean blasting foundry return, can significantly improve the quality of molten iron, reduce energy consumption of molten iron. Our foundry in 10 t worked as a production test on the intermediate frequency furnace, using clean furnace charge back, in the production of high-power diesel engine cylinder head, casting blowhole rejection rate was 6% lower, liquid iron smelting consumption reduce 90 kw · h/t; At the same time can effectively reduce the labor intensity of workers, grilled slag, improving casting smelting operation environment, reduce the slagging phenomenon of power frequency furnace throat opening, solve the problem of difficult after the oven slagging, prolonging the service life of power frequency furnace lining 20%, improve the efficiency of smelting production. Therefore, using medium frequency furnace melting iron liquid, to attach great importance to purification of furnace charge, especially back to the burden of crushing, blasting purification treatment, which is play the efficiency of the intermediate frequency furnace smelting iron a very important link.

2016年10月13日星期四

Vacuum furnace smelting non-ferrous metal alloy

Non-ferrous metal alloy vacuum furnace smelting in below atmospheric pressure until the high vacuum (from 100 kpa to 1.3 x 10-10 pa) under the condition of non-ferrous metal smelting and casting process. The production of refractory, rare and active metal material, is also a material with high purity and high quality metal important modern smelting technology. Vacuum smelting in 1917 began to transition from laboratory scale to the factory, at that time, only a small amount of smelting nickel base alloy, thermocouple material and heat resistance. With the development of vacuum technology and military industry and modern science and technology, the need for high performance new metal materials, vacuum melting has been developing rapidly. Titanium in the 1950 s began to mass production. In the 70 s have dozens of tons to hundreds of tons of capacity of vacuum smelting equipment, now has developed into a important production department is equipped with modern technology and equipment of special material. Vacuum melting because the purification effect of strong, volatile impurities, gas effect is good, strong deoxidization ability, nitride and hydride can pyrolysis, some cannot be under atmospheric chemical reactions can also, especially the reaction with gaseous product formation, so to get high purity, uniform texture, low air content, less impurity, less defect and good performance of metal material processing. Atomic energy industry with high purity barium, hafnium and vanadium and thorium, high temperature alloy, thermoelectric, active metal titanium and zirconium alloys and magnetic materials, refractory metal, tungsten, molybdenum, tantalum, niobium and electric vacuum with copper, nickel alloys were produced by vacuum remelting process. Main vacuum smelting equipment and method of vacuum induction melting furnace, electric arc furnace smelting (see non-ferrous metal alloy vacuum arc furnace smelting) and electron beam furnace smelting 3 kinds.
Vacuum induction furnace smelting, is to put the sensor and the crucible into a vacuum, in 2 ~ 1.3 x 1.3 x 10-10-3 pa vacuum melting, used in the production of high temperature alloy and precision. Electron beam furnace smelting is under high vacuum (1.3 x 1.3 x 10-1 ~ 10-5 pa) with one or several, electron beam emitted from the electron gun bombardment was melted objects to melt drip into the condensed ingot water-cooled copper mold. Electron beam furnace smelting Yu Chaochun metal and refractory metal smelting.

2016年10月8日星期六

Vacuum induction brazing furnace process method

Vacuum induction brazing furnace process methods is more, mainly is divided according to the use of equipment and working principle. According to the heat source such as have infrared, electron beam, laser, plasma, glow discharge brazing, etc.; According to the working process of the points have contact reaction brazing and diffusion brazing, etc. Contact reaction brazing is the use of filler metals andparent metal reaction liquid filling joint gap. Diffusion brazing is to increase the thermal diffusion time, make the weld and parent metal full homogenization, to get the same as the parent metal properties of joints. Vacuum induction brazing furnace process method
Soldering iron soldering for small soft soldering of simple or very thin parts.
Wave soldering is used for large quantities of printed circuit boards and electronic components assembly welding. Welds, around 250 ℃ in the molten solder under the pressure of pump through the narrow seam formation wave, workpiece after wave for welding. This method is of high productivity, can realize automatic production on line.
Flame brazing with combustible gases mixed with oxygen or air combustion flame as a heat source in welding. Flame brazing equipment is simple, easy to operate, according to workpiece shape available flame heating welding at the same time. This method is suitable for the bicycle frame, aluminum water spout and other medium and small welding.
Dip soldering part or the whole workpiece in covering flux of solder bath or only the molten salt salt bath heat welding. This method is heated evenly and quickly, more accurate temperature control, suitable for mass production and welding of large components. Salt bath salt in more composed of soldering flux. After welding workpieces are often left plenty of soldering flux, cleaning work.
Induction brazing with high frequency, intermediate frequency or power frequency inductive current welding method as a heat source. High-frequency heating is suitable for welding thin wall pipe fittings. Coaxial cable and jewels can be away from the power of the induction coil, the field brazing, especially suitable for some large components, such as the rockets need to remove the pipe joint welded on.
Furnace brazing will be assembled in solder artifacts in heating furnace of welding, often need to add solder, also can use a reducing gas or inert gas protection, heat evenly. Mass production can be adopted when the continuous furnace.
Vacuum induction brazing furnace workpiece heating in vacuum chamber, is mainly used to request the product with high quality and ease of oxidation material welding.

2016年9月29日星期四

Medium frequency induction furnace production flexibility

Induction quenching furnace in steel industry's role is irreplaceable, medium frequency induction furnace has greater flexibility in produce decorate on, melting operation has greater sensitivity. About power frequency induction furnace for discontinuously task, due to the continuous will add cold start cold start not only add the melting time and power cost, and each one must still use the boot block. And intermediate frequency furnace in for a short time, in the application is not using the boot block with a cold start, intermediate frequency furnace change is very convenient, in the charge of iron liquid and can be completely empty, the material of intermediate frequency furnace can finish within short time change, intermediate frequency furnace to produce organization arrangement. The premise for single small batch produces favor.
Intermediate frequency furnace, for example, in the iron and steel metallurgy enterprises industry repair workshop, the first bear the required spare parts, spare parts and large iron and steel enterprise cost a yield, and is more sheet small batch production, sort is more, the material requirements often change. The fruit of the intermediate frequency induction furnace in this respect has sensitivity, compensated the power frequency induction furnace and the other the lack of smelting furnace.

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