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Laboratory special electric heating equipment introduction

Induction heating equipment ◆ IGBT devices are used, and high-efficiency combined resonance technology is adopted. Adopt low-inductance circuit arrangement and adopt large-scale digital circuit.
◆ Fast heating speed, high production efficiency, less oxidative decarburization, saving material and forging die cost. Since the principle of the intermediate frequency induction heating is electromagnetic induction, the heat is generated in the workpiece itself, and the ordinary worker can perform the continuous work of the forging task immediately after going to work with the intermediate frequency electric furnace. There is no need to worry about the waste of heated billets due to power outages or equipment failures. Because the heating method has a fast heating rate, the oxidation is extremely small, and each ton of forgings and the KGPS thyristor intermediate frequency furnace can save at least 20-50 kilograms of steel raw materials, which greatly saves electricity, and consumes 310 degrees of electricity per ton of steel. Compared with KGPS thyristor, the intermediate frequency saves 20%-30%. Because the heating method is evenly heated, the temperature difference of the core meter is extremely small, and the net side pollution, the power supply transformer does not generate heat, the substation compensation capacitor does not generate heat, and does not interfere with other equipment work. Reduce the power transformer capacity.
◆ Even heating, the core table temperature difference is very small, and the temperature control precision is high. Induction heating heat is generated in the workpiece itself, so the heating is uniform, and the temperature difference between the core and the core is extremely small. The application of a temperature control system allows precise temperature control to improve product quality and yield.
◆ The whole equipment is small and compact, which is very convenient to use in the forging machine hot and forging machine.
◆ Excellent working environment, no pollution, low energy consumption. For medical units, universities, research departments and production units
Induction heating equipment
Electric thermostatic water bath
Laboratory special electric heating equipment introduction
The electrothermal constant temperature water bath is used for evaporation, drying, concentration, constant temperature heating, etc. for medical units, universities, scientific research departments and production units. When using an electric heated water bath, you should pay attention to the following items:

1. Always use a proper amount of clean water before using the constant temperature water bath. During the use process, it is necessary to pay attention to the timely addition of clean water. Because the furnace casing is welded and sealed, heating will burn out the casing when it is not water, so that water enters the casing to destroy the furnace wire or cause leakage.

2. There is a bimetal spring-loaded device in the temperature automatic control box, which achieves the purpose of controlling temperature by expanding or contracting the bimetal or turning on or blocking the power supply. Be careful not to splash the box or get wet, in case of control failure, leakage or damage.

3. Keep clean in the water bath, wash it on time, prevent rust and prevent water leakage and leakage. The water in the box should be replaced frequently. If it is used for a long time, all the water in the box should be drained and dried with a cloth to avoid rust.



Electric heating incubator

The electric thermostats commonly used in the laboratory can reach temperatures up to 200 ° C or 300 ° C and are called drying ovens or industrial ovens. The most commonly used temperature is 100-150 ° C, which is mostly used for drying samples or drying glass containers. When using an electric thermostat, be aware of the following:

1. The drying box should be placed indoors, installed at a stable level, kept dry, protected from moisture and moisture, and protected from corrosion.

2. There must be a certain distance between the place where the drying box is placed, and it is recommended to have more than 2M from the wall.

3. Check the voltage before using the drying box. The voltage required for the smaller oven is 220V. The voltage required for the larger oven is 380V (three-phase four-wire). Install a power knife with sufficient capacity according to the power consumption of the oven. And choose the right power cable. Also work on the grounding wire.

4. After the above work is ready, put the sample into the dry box, then connect the power supply, turn on the oven switch, and the oven with the air blower. The blower must be turned on during heating and constant temperature, otherwise the temperature of the studio will be affected. Uniformity and may damage the heating element. Then adjust the temperature of the suitable test product to the compensation. The oven enters the working state.

5. The items of the baked goods should not be too dense. Do not place objects on the bottom of the drying box (heat sink) to avoid affecting the hot air circulation. It is forbidden to burn flammable, explosive materials and volatile and corrosive items.

6. After the bakeout is completed, cut off the power before opening the studio door. Remember not to touch the items directly with the hand. Use special tools or items with insulated gloves to avoid burns.

7. Keep the drying chamber working room clean.

8. When using the drying oven, the temperature should not exceed the maximum operating temperature of the oven.



Box resistance furnace

1. Do not exceed the maximum temperature of the resistance furnace when using.

2. Always turn off the power when handling the sample to prevent electric shock.

3. When the sample is taken, the opening time of the furnace door should be as short as possible to prolong the service life of the electric furnace.

4. It is forbidden to infuse any liquid into the furnace.

5. Do not put samples with water and oil into the furnace; do not use a clip with water and oil to take the sample.

6. Wear special gloves when handling samples to prevent burns.

7. The sample should be placed in the middle of the furnace, placed neatly, and should not be placed indiscriminately.

8. Do not touch the electric furnace and surrounding samples.

9. Turn off the power and water source after use.

10. Do not operate the resistance furnace without the permission of the management personnel, and strictly follow the operation rules of the equipment.



Fourth, muffle furnace

The muffle furnace is a sealed furnace heated by electric heating wire or silicon carbon rod. The temperature is adjustable, and the furnace is made of high temperature resistance. The temperature of the electric heating furnace can reach 950 °C, and the temperature of the carbon silicon rod furnace can generally reach 1300. °C, when using the muffle furnace, the heated material should not be placed directly in the furnace and must be placed in a high temperature resistant clamp. Do not exceed the maximum allowable temperature when heating. Heating liquids and other volatile corrosive substances are not allowed in muffle furnaces. If you want to ash the filter paper or organic components, you should open the door several times during the heating process and let the air in.

The muffle furnace is a high-temperature furnace, mainly used for high-temperature burning or high-temperature reaction. It consists of a furnace body and an electric furnace temperature controller. The temperature controller usually uses a thermocouple thermometer, which is composed of a thermocouple and a millivoltmeter. The thermocouple is made of two different wire soldering ends, and the soldering end is inserted into the temperature to be measured, and the soldering end is respectively connected to the positive and negative electrodes of the millivolt meter. Different temperatures produce different thermoelectric potentials, and millivoltmeters indicate different readings. Generally speaking, millivoltmeter readings are converted into temperature numbers, so that the temperature can be read directly from the pointer position of the watch. In general, the reaction is controlled. At a certain temperature, the thermocouple is connected to the temperature controller of an access circuit to form an automatic temperature controller.
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