Medium frequency melting furnace 5 characteristics analysis

Medium frequency melting furnace 5 characteristics analysis

1, medium frequency melting furnace heating speed, less oxidation decarburization
Due to the principle of electromagnetic induction heating, the heat inside the workpiece itself, because the heating mode heat up fast, so few oxidation, high heating efficiency, process repeatability.
2, intermediate frequency furnace high degree of automation,
Can realize full automatic operation
Selection of automatic feeding and automatic discharging sorting device, coupled with a special control software, which can realize full automatic operation.
3, intermediate frequency furnace heating, temperature control precision is high
Small table is easy to realize uniform heating, core temperature requirements. Application of temperature control system can realize accurate control of temperature.
4, medium frequency melting furnace induction furnace easy replacement
According to different machining dimensions, the configuration of different specifications of the induction furnace. The furnace body are designed with water, electricity, quick change connectors make furnace replacement is simple, rapid and convenient.
5, intermediate frequency furnace low energy, no pollution
Induction heating compared with other heating mode, high heating efficiency, low energy consumption, no pollution; All the indexes can meet the requirements. Under the condition of heating, heat from room temperature to 1250 ℃ of tons of power consumption is less than 380 degrees.

Medium frequency induction furnace performance characteristics

Medium frequency induction furnace performance characteristics

1. The central control circuit designed by computer optimization, optimum combination unit circuit, device performance is stable, reliable quality, strong anti-interference;
2. Coordinate element layout reasonable, convenient maintenance;
3. On the basis of zero voltage starting and strengthen the function of automatic frequency sweep repetition start, closely tracking the voltage and current loop circuit, equipment start and stop a smooth and stable, no current shock.
4. The inverter start signal by a single signal of high sensitive trigger circuit, further increases the starting performance of the equipment, equipment start-up success rate of 100%;
Constant power circuit control system, as the change of charge in the production of rapid automatic regulation of the voltage and current on the best set, do not need artificial regulation inverter cutoff Angle;
6. Has the perfect over voltage, over current, under voltage, water shortage, lack of phase, such as pressure limiting current limiting protection system, to ensure that the use of the equipment reliability and stability;
7. Medium frequency induction furnace is highly integrated circuit, debugging and operation are quick, simple, easy to learn.

Medium frequency induction furnace safety protection

Medium frequency induction furnace safety protection

Medium frequency induction furnace is a kind of protection from layout about the safety of intermediate frequency electric furnace equipment first always start from four aspects.
In intermediate frequency induction furnace in hydraulic system. If the power supply time is very long, the metal in the furnace is likely to cool off, it will damage the furnace. If it is a power outage, demand with emergency system will be metal poured out. In order to fall protection furnace pressure loss situation, demand throttle valve at the inlet end device.
Medium frequency induction furnace, the cooling water system. Because the water is very important, simple form, so the demand for water is entering the cooling medium frequency power supply, water, cable, induction coil, and so on. Meanwhile, depicting the demand composite rule of cooling water in and out of the temperature, flow rate and pressure. Of course when the cooling water appear abnormal, perhaps beyond cooling water parameters Settings will announce the alarm.

Induction furnace operation on several matters needing attention

Induction furnace operation on several matters needing attention

1) induction furnace blow-in must first inspection before pushing, discharging device, water, air pressure is normal, limit switch, automatic and manual switch position is in the required position, check whether the workbench billet conform to the requirements of the forgings. Cooling water is the lifeline of induction furnace, the cooling water must always focus on, export water temperature shall not exceed 60 ℃.
2) start after the induction furnace, heating parameters, after waiting for heating parameters stable heating can be normal production.
3) cold furnace condition under-burnt clinker for the first time at work, should not be used immediately rated power, should use the normal power from 60% to 75% for low temperature heating, can avoid lining cracks, lining uniform temperature reaches 90 ℃, can enhance power to normal process power, formally began forging operations.
4) to correctly put billet in the process of loading, all burrs or deformation of big billet after processing must take place before furnace charging, and want to pay attention to loading method, place "horseshoe" upward, so as to avoid stuck very bad lining.
5) before the furnace and the work should not be on stage at the same time there are two parts of billet, residual billet heated furnaceman must under the shift into the container, indicating the billet size and status, the red material should finish forging furnace. Induction furnace is a kind of electric heating furnace, there are a lot of advantages: warming faster, less oxidation and decarburization, good working conditions, easy to realize mechanization and automation. But the size of billet shape change adaptability is strong enough. When the size of the blank shape changes within the specified requirements, such as shortening the length or added new billet size, etc., it can't just casually discharging pushing, must be conducted in accordance with the requirements of the design of the sensor discharging pushing related calculation, so as to ensure the quality of billet heating, otherwise will produce heat.

Induction of intermediate frequency furnace lining life how should improve?

Induction of intermediate frequency furnace lining life how should improve?

Induction hardening furnace has the good reputation in the heating equipment, exquisite workmanship, environmental protection, is a good tool for industrial production.
Induction of intermediate frequency furnace in the first and subsequent use in, all needs to play in furnace lining and to sintering. Lining on the need of raw materials and smelting differences can be divided into acidic and alkaline lining, lining, is to use data such as quartz sand, along the furnace wall to do a maintenance isolation layer melting materials and the induction coil inside the furnace body, maintain the induction coil. Lining should be pay attention to when, even force strong, a play, a molding. Lining after good need to the long time of low temperature bake, condensed into - a consolidate all, and has considerable strength, can melt fluid mixing and loading shock. Sintering, it shall comply with low power to slow warming air furnace, continue baking 36 hours, energetic condensation curing. Lining knot of black and white, is guaranteeing the main premise of the use of intermediate frequency electric furnace life and peace.
Lining knot, how accurate and reasonable operation is extended using medium frequency furnace life and guaranteeing the key of life and peace. - a condition, the operation before using the intermediate frequency electric furnace introspection, water cooling system, water can be sluggish, water pressure, water temperature of cooling water whether normal, whether for leaks, whether can normal task in the hydraulic system. Operation to do, be careful careful not to touch touch, one operator, one person's care, and it is strictly prohibited to other personnel to enter the room, avoid electric shock. Smelting process, we should use the boring, melting and feeding, often charging, when molten material melt in the furnace to demand should be real-time poured out, avoid high temperature add lining loss; Frequently check, when found a red body lateral picture, this is the precursor to leak furnace, should be in real time to accept the closure of intermediate frequency power supply, pour out the liquid, such as to prevent the leakage of furnace confound attack. Should also pay attention to in the use, and when found lining becomes very thin, means less than continuous use, should be hit lost old lining redo new lining, avoid missing furnace confound attack.
Other tasks for intermediate frequency furnace in high temperature, high voltage, large power flow. Therefore, should often clean the room, power supply and the dust of the induction coil cohesion copper platoon, contained in the avoid insulation to reduce attack problem. Often can reflect on the cooling water flow, the water pressure is normal. Schedule of the various components of the join fastening bolt, nut, avoid contact with bad destroyed parts. On schedule for water cooling system pump motor, the motor of the hydraulic pressure station, clean the hydraulic oil, guaranteeing the normal water supply and drainage equipment. Schedule of equipment of additional voltage and current for efficacy, avoid maintenance circuit spirit. Timely, accurate and careful maintenance is extension of intermediate frequency furnace using life and guaranteeing the main guarantee of peace.

The development of vacuum induction furnace how?

The development of vacuum induction furnace how?

The creation of the vacuum induction furnace and development plays an very important role in human progress. Appeared in the shang dynasty in China, relatively perfect copper smelting furnace, furnace temperature reached 1200 ℃, the stove inside diameter of 0.8 meters. In the spring and autumn period and the warring states period, people in molten copper furnace on the basis of further mastered the technology of improving furnace temperature, so as to produce the cast iron.
In 1794, the world appeared a straight cylindrical cupola melting cast iron. In 1864, after the French Martin by using the principle of the British Siemens regenerative furnace, built the first steel open hearth is heated with gas fuel. He used the regenerator to high temperature of air and gas, so as to ensure the steel needed for the temperature above 1600 ℃. Around 1900, power supply sufficient gradually, started to use a variety of resistance furnace, electric arc furnace and cored induction furnace.
In the 20th century 50 s, coreless induction furnace to get rapid development. Then the electron beam furnace, the use of electron beam to impact solid fuel, can strengthen the surface heating and melting of the high melting point materials. Used to forge heating furnace was first hand forge, the working space is a concave groove, groove filling in coal, combustion with air from the bottom of the tank for the artifacts buried heating in the coal. This furnace thermal efficiency is very low, the heating quality is not good, and only small workpiece heating, after development for refractory brick build by laying bricks or stones becomes close partly or fully enclosed chamber of a stove or furnace chamber furnace, can use coal, gas or oil as fuel, also can use electricity as a heat source, the artifacts in the chamber of a stove or furnace heating.
To facilitate heat large workpiece, again is suitable for heating ingot and billet bogie hearth furnace, heat for long bar also appeared well type furnace. After the 1920 s appeared to raise the productivity of the furnace and improving working conditions of mechanization, automation of furnace type. Industrial furnace fuel also as fuel resources development and the progress of fuel conversion technology, and by using solid fuels such as coal, coke, coal gradually convert producer gas, city gas, natural gas, gas and liquid fuels such as diesel oil, fuel oil, and developed and that meet the needs of all kinds of fuel used in combustion devices.

Built-in vacuum furnace temperature uniformity test system

Built-in vacuum furnace temperature uniformity test system

For the vacuum heat treatment equipment without temperature testing hole cannot be tested or vacuum furnace temperature test of complex due to the reason of its structure, design the online test system and test online.
Temperature in heat treatment process parameters is of vital importance, and temperature uniformity are important parameters of heat treatment process of heat treatment furnace requirements. At present, the domestic part of the vacuum heat treatment plant equipment without temperature uniformity measurement inspection hole, cause not through an external device, the measurement of temperature uniformity and system accuracy test. Another part of the vacuum heat treatment equipment test hole made on the equipment, but detection equipment damage, destruction furnace, some of the vacuum furnace heating element is composed of expensive components such as molybdenum, once broken, it brings huge economic losses, and even to temperature field uniformity testing work, the existing test methods is also very complicated.
Through to the device using the method and the working principle is analyzed, using built into, the measurement of temperature uniformity in the vacuum furnace, thermocouple data collector and the heat insulation box in the heat treatment furnace frame, the station frame according to the requirements of each customer testing techniques to customize, loading test for temperature field in the vacuum furnace, thermocouple data collector for parameter setting, including the acquisition time, acquisition interval and thermocouple type, etc., the internal temperature uniformity testing. System composition and the built-in vacuum furnace temperature on-line detection system is introduced in this paper is mainly composed of thermocouple data collector, heat insulation and the test of thermocouple.

The structure of the vacuum induction melting furnace

The structure of the vacuum induction melting furnace

Vacuum induction melting furnace equipment is mainly composed of furnace shell, sensors, crucible, tilting furnace mechanism, mold, power supply device, and the water cooling system, etc. On the furnace shell for observation, temperature, feed, such as sampling, mash material device. Outside the furnace body is equipped with vacuum system, power supply system and control system, etc. Vacuum induction melting furnace with batch and semi-continuous type two kinds, but make it vertical or horizontal.
Vacuum induction melting furnace should be considered in the structural design of the important issues is to avoid vacuum discharge, therefore to the furnace shell all charged body need to be treated with insulation, and sensors in the structure should be no sharp corners, burrs and sharp edges.