The structural characteristics of vacuum induction furnace

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.

Said vacuum brazing furnace, induction furnace of actual use

Said vacuum brazing furnace, induction furnace of actual use

Practical applications of induction furnace
A, induction furnace used for heat treatment: all kinds of metal partial or whole quenching, annealing, tempering, diathermy;
Second, the induction furnace used for thermal type: the whole parts forging, forging, hot upsetting, hot rolling;
Three, induction furnace is used for welding, brazing of various kinds of metal products, all kinds of cutter blades, saw blade welding, steel pipe, copper pipe welding, the same dissimilar metal welding;
Four, induction furnace used for smelting metal: gold, silver, copper, iron, aluminum and other metal (vacuum), smelting, casting molding and evaporation coating;
Five, high-frequency heating machine other applications: semiconductor crystal growth, shrink fit, bottle heat sealing, toothpaste heat sealing, powder coating, metal implants plastic, etc

The preparation and production of induction melting furnace before use operation procedures

The preparation and production of induction melting furnace before use operation procedures

Preparation of the induction melting furnace before use
1. Check each distributor is normal.
2. Check the water, water pressure and flow rate is in line with the requirements.
3. Check the vacuum pump and vacuum system is normal.
4. Check the control cabinet and temperature measuring meter and the indicator light is normal.
5. The processed workpiece cleaned thoroughly with alcohol or gasoline
6. Artifacts in furnace, tooling, material basket, etc shall be clean and dry.
7. Vacuum cleaning furnace scale and sundry.
8. Use silk or wool fabric dipped in alcohol or gasoline wipe the oven door and furnace cover seal.
9. The workpiece is put should smooth and may not be in the running and scattered and crooked blowing process.
Induction melting furnace production operation procedures
1. The starting power supply, set the switch control cabinet in automatic control location.
2. Input the parameters of the process planning into the computer.
3. The workpiece with charging car smoothly away in furnace.
4. Close the oven door and lock (cover), to ensure the seal.
5. According to the technological requirements to choose good cooling medium and cooling method and pressure.
6. Press the cycle start button, equipment execution procedures: vacuum heating _ _ cooling automatically.
7. Check the equipment each system operation is normal, if there is any abnormal timely report the captain.
8. Before, we should restore the normal pressure in the furnace, the light is normal after open the oven door (cover).
9. When discharging, carefully operation, workpiece and tooling shall glory hole collision.

The application of medium frequency induction heating technology

The application of medium frequency induction heating technology

Induction heating technology in our country the earliest application military-industrial complex, automobiles, machinery and other industries, then gradually expand to the metallurgical industry, in the early 1980 s shougang special steel company in the domestic first began using the intermediate frequency heating technology, with 45 momnb, 35 crmo, 40 cr, 40 mn2mo and 45 # steel quenched and tempered treatment; For GCr15 steel tube cold working in the middle of the softening heat treatment; On 5 cr21mn9ni4n steel pipe solution heat treatment; For T10A, mn2 20, 20 # steel bar annealing heat treatment, has achieved good effect.
Using electromagnetic induction heating principle of intermediate frequency electric current for oil well tube of quenching, tempering and normalizing, in the United States and other developed countries have already belongs to a kind of mature technology, and in the field of oil special pipe manufacture to a wide range of applications. LONGSTAR company, unlimited companies in the United States, Russia, Japan JFE company tower dry rogge metallurgy factory, the volga steel pipe enterprise has its own medium frequency induction heat treatment production line.
Induction heating by electricity as an energy source, is completely different from using natural gas, gas, such as gas or liquefied petroleum gas in the heating process of steel tube produces soot, form of air pollution. Because power belongs to the green energy, will not cause damage to the environment, accord with the requirement of human society for environmental protection, so the government encourages the development of environmental protection technology development at home and abroad. At the same time, the use of induction heating technology to quenching, tempering and normalizing of steel tube, fast heating, high efficiency and convenient production organization

What is the intermediate frequency furnace?

What is the intermediate frequency furnace?

Intermediate frequency furnace using 200-2500 hz frequency induction heating power supply, heat insulation, it is mainly used for smelting carbon steel, alloy steel, special steel, also can be used for copper, aluminum and other non-ferrous metal smelting and the temperature. Equipment is small in size, light weight, high efficiency, less consumption, melting heat up quickly, easy to control furnace temperature, high production efficiency.
Medium frequency induction furnace hot water works
Using medium frequency furnace power supply mode is different from the power frequency electric boiler, is a 380 v power frequency ac power input of intermediate frequency power supply cabinet (intermediate frequency power supply is contained in the over-voltage protection, over-current protection, such as over voltage, over current phenomenon will automatically stop alarm), in the medium frequency power supply will be contained in the power frequency ac power rectifier for single phase dc, again through the inverter single-phase ac frequency voltage, electric current (single-phase ac frequency voltage and current are safe), the single-phase ac frequency voltage and current input induction heater produced for induction heating of the water in the boiler. This boiler heating process cwe separation, safe and reliable.

Principle of intermediate frequency furnace by what job

Principle of intermediate frequency furnace by what job

How medium frequency melting furnace works, what is the principle of intermediate frequency furnace? , 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.
Here is to introduce: medium frequency melting 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.

Good vacuum induction furnace protection maintenance methods

Good vacuum induction furnace protection maintenance methods:

1) the pump protection maintenance, please see the detail its use manual;
2) vacuum induction furnace, when not in use for a long time, it is necessary to properly keep system with cooling water should be put on net. Especially in the winter should adhere to the indoor temperature above 10 ℃, smooth with antifreeze bad equipment and adhere to the outstanding conditions;
3) work to introduce choose 46 anti-wear hydraulic oil, oil using oil temperature within 15 ℃, 60 ℃;
4) the oil should be consented to enter the tank after strict filtering;
5) oil each replaced once a year, for the first time in the replace time shall not exceed three months;
6) check check once every six months pressure gauge,
7) the machine is stopped for a long time, the processing appearance should be wiped clean and coated with anti-rust oil.
8) don't know the structure of the machine function or procedure should not private line to start the machine;
9) machine in the process of operation, should not be for maintenance and adjustment mould;
10) when machine found serious leak or other abnormal (such as the action is not reliable, large noise, vibration, etc.) should be parking analysis reason, try to wipe out, not being put into production.
11) shall not be overloaded or beyond the maximum offset distance use;
12) long-term need not when vacuum induction furnace, vacuum box should be insured deposit under the vacuum condition, all equipment cooling water should be put on net. Especially in the winter should adhere to the indoor temperature above 10 ℃, smooth with antifreeze bad equipment and adhere to the outstanding conditions;
13) before beginning each technical process, should be measured a heater resistance and insulation resistance to ground, ensure no short circuit, open circuit representation;
14) regularly check system all wiring is loose or break line, such as found that should tighten loose place, will break from cohesion;
15) heating chamber, such as attack damage need to replace, otherwise the heat preservation effect;
16) to check the electric control cabinet back each relay is instrumentation, such as loose surface are detected, should be timely put tight;
17) time to arrange, electric control cabinet to remove adherent dust, crushed, metal scraps, etc., don't make it work for a long time in high temperature, moisture, dust pollution environment;
18) claims that did not work, please send electric control cabinet back all the status of the circuit breaker from ON to OFF, or directly closed the total power, avoid shock disturbance;
19) using the touch screen, pay attention to the operation process, avoid the wrong operation; Touch screen together to gently, avoiding the damage to the screen.

Medium frequency induction heating equipment gold quality leading industry

Medium frequency induction heating equipment gold quality leading industry

At present, the market has a variety of medium frequency induction heating equipment, each manufacturer's model is multifarious, but regardless of the type variable, although these equipment from different manufacturers shape difference is not big, but performance is differ in thousands ways, such as market commonly used medium frequency induction heating equipment.
Customer demand determines the market trend, the heat treatment of the basic requirements of the customer quality and practicability of the forging heat treatment equipment to ascend, and forging heat treatment equipment for precision machinery, determines the quality of the fundamental originated in advanced manufacturing technology and high quality high-end processing equipment. Therefore, only a real strength as relying on forging heat treatment equipment manufacturers, to produce in accordance with customers to use forging heat treatment equipment.
Medium frequency induction heating equipment manufacturers as the first brand of medium frequency induction heating equipment, professional from intermediate forging heat treatment equipment, intermediate frequency induction furnace, induction furnace, high frequency of forging heat treatment equipment research and development, production, marketing and after-sales service in one of the high-tech enterprise.

Medium frequency induction furnace in the production of electricity saving way

Medium frequency induction furnace in the production of electricity saving way

 

Medium frequency induction furnace because of its advantages of less investment, quick effect, convenient operation, widely used. Induction furnace production energy saving problem has been attracting the attention of the manufacturer. In this paper, according to the characteristic of induction furnace and my many years of experience in production practice. From improving production efficiency, improve the melting speed, reduce the melting time. Induction furnace production of intermediate frequency furnace energy-saving approaches are discussed.
1 prolong continuous smelting Power consumption has a lot to do with smelting method, the furnace works can be divided into three conditions:
1) continuous smelting: daily class three continuous operation;
2) intermittent smelting: daily two class or class assignments, the assignments during the furnace hot metal with thermal insulation power;
3) intermittent smelting: after the completion of all the daily net. Obviously when the above three conditions, continuous smelting electric energy consumption minimum, intermittent smelting times, intermittent smelting the highest. Therefore, conditional your case should be as much as possible into a continuous smelting. Try to increase a smelting furnace, extend the duration of smelting, lower power consumption.

Induction heating equipment advantages

Induction heating equipment advantages

 Induction heating furnace is a kind of will power frequency 50 hz alternating current into intermediate frequency (above 300 hz - 300 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.
  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. Medium frequency induction heating furnace heating speed, medium frequency furnace production efficiency is high, the intermediate frequency furnace oxidation decarburization, intermediate frequency furnace to extend the die life, less of intermediate frequency furnace working environment is superior, intermediate frequency furnace to improve Labour standards and the company's image, intermediate frequency furnace pollution-free, low-power intermediate frequency furnace and medium frequency furnace melting speed, medium frequency furnace energy-saving effect is good, intermediate frequency furnace burning less, low energy consumption and the uniform mixing function, melting temperature and metal composition, intermediate frequency electric furnace heating start-up performance is good, good working environment, intermediate frequency furnace air furnace, furnace can be 100% full.

Induction furnace coreless induction melting furnace

Induction furnace coreless induction melting furnace

Coreless furnace named is relative intentional furnace, the metal liquid in a crucible, therefore, also known as the crucible furnace. This type furnace is mainly used in special steel, cast iron, non-ferrous metal and its alloy melting and heat preservation. Coreless furnace has a high melting temperature, less impurity contamination, alloy composition uniformity, good working conditions and many other advantages. Compared with intentional furnace coreless furnace furnace and a change in metal varieties are more likely to use more flexible, but its power, is far less than intentional furnace thermal efficiency. Coreless furnace because of the low surface temperature, slag formation of high temperature melting.
Coreless furnace with high frequency, intermediate frequency and power frequency.
(1) high frequency coreless furnace
High frequency coreless furnace capacity generally under 50 kg, suitable for laboratory and small scale production for smelting special steel and special alloy.
(2) the medium frequency coreless furnace
The capacity and power of the medium frequency coreless furnace are bigger than high frequency furnace. Mainly used in special steel, such as magnetic alloy and copper alloy melting. The furnace due to the need for expensive frequency conversion equipment, so in some large capacity situation has changed labor frequency coreless furnace. However, compared with power frequency furnace, intermediate frequency furnace also has its unique feature. As for the same capacity of the furnace, intermediate frequency furnace input power is greater than power frequency furnace, so the melting speed is faster, intermediate frequency furnace in cold furnace melting block, do not need a furnace on liquid metal can be poured out, so than when using flexible power frequency furnace; In addition, medium frequency melting furnace crucible lighter scouring solution, good for lining. Therefore, in the development of the high power of intermediate frequency power supply cheap, intermediate frequency furnace is promising.

Vacuum induction melting furnace structure Introduction

Vacuum induction melting furnace structure Introduction

Melting furnace structure, introduction of a complete set of melting furnace furnace equipment consists of intermediate frequency power supply cabinet, compensation capacitance, furnace (two) and water-cooling cable, reducer. Shell, induction coil, furnace lining, furnace body by tilting furnace reducer of four parts, such as furnace shell made of non-magnetic materials, induction coil is made up of rectangular hollow tube spiral shell, melting when the cooling water pipe. Coil which leads to the copper platoon and water-cooling cable connected, induction coil, furnace lining close to, composed of quartz sand play solid sintering, tilting furnace by tilting furnace reducer rotate directly. Tilting furnace is a secondary turbine speed reducer, self-locking performance is good, stable and reliable, emergency power when the tilting furnace work, to avoid danger. Can choose furnace switch of two furnace tilting furnace reducer motor control options, with four core rubber-sheathed wire switch box enables the operator to stand in the right position of the furnace body tilting, inching control reset.
Is generally more than 3 tons of melting furnace has not adopt the institutions, tilting vacuum furnace is given priority to with the hydraulic oil cylinder, induction copper outer circle several uniform imitation arc magnetic yoke, prevent leakage. Using this method, the furnace shell does not need to use nonmagnetic materials, furnace shell outside is not hot. Using hydraulic tilting furnace equipment gently tilting furnace process, safety.

Induction furnace coreless induction melting furnace

Induction furnace coreless induction melting furnace

Coreless furnace named is relative intentional furnace, the metal liquid in a crucible, therefore, also known as the crucible furnace. This type furnace is mainly used in special steel, cast iron, non-ferrous metal and its alloy melting and heat preservation. Coreless furnace has a high melting temperature, less impurity contamination, alloy composition uniformity, good working conditions and many other advantages. Compared with intentional furnace coreless furnace furnace and a change in metal varieties are more likely to use more flexible, but its power, is far less than intentional furnace thermal efficiency. Coreless furnace because of the low surface temperature, slag formation of high temperature melting.
Coreless furnace with high frequency, intermediate frequency and power frequency.
(1) high frequency coreless furnace
High frequency coreless furnace capacity generally under 50 kg, suitable for laboratory and small scale production for smelting special steel and special alloy.
(2) the medium frequency coreless furnace
The capacity and power of the medium frequency coreless furnace are bigger than high frequency furnace. Mainly used in special steel, such as magnetic alloy and copper alloy melting. The furnace due to the need for expensive frequency conversion equipment, so in some large capacity situation has changed labor frequency coreless furnace. However, compared with power frequency furnace, intermediate frequency furnace also has its unique feature. As for the same capacity of the furnace, intermediate frequency furnace input power is greater than power frequency furnace, so the melting speed is faster, intermediate frequency furnace in cold furnace melting block, do not need a furnace on liquid metal can be poured out, so than when using flexible power frequency furnace; In addition, medium frequency melting furnace crucible lighter scouring solution, good for lining. Therefore, in the development of the high power of intermediate frequency power supply cheap, intermediate frequency furnace is promising.