Various temperature ranges and furnace sizes of muffle furnaces, most of which are available in stock at affordable prices. Welcome to inquire

MaFu furnace touch screen programmingInstallation precautionsAfter opening the packaging, check whether the muffle furnace is intact and whether the accessories are complete.

1. A typical muffle furnace does not require special installation, it only needs to be placed flat on a reliable cement countertop or shelf indoors, and there should be no flammable or explosive substances around it. The controller should avoid vibration and should not be placed too close to the electric furnace to prevent internal components from malfunctioning due to overheating;

2. Insert the thermocouple into the furnace by 20-50mm, and fill the gap between the hole and the thermocouple with asbestos rope. Connect the thermocouple to the controller using compensating wires (or insulated steel core wires), pay attention to the positive and negative poles, and do not connect them in reverse;

3. An additional power switch needs to be installed at the power cord entry point to control the main power supply. To ensure safe operation, the electric furnace and controller must be reliably grounded;

4. Before use, adjust the thermostat to zero. When using compensation wires and cold end compensators, adjust the mechanical zero point to the reference temperature point of the cold end compensator. When not using compensation wires, adjust the mechanical zero point to the zero scale, but the indicated temperature is the temperature difference between the measuring point and the cold end of the thermocouple;

5. Set the temperature to the desired operating temperature and then turn on the power. Turn on the work, power on the electric furnace, and the control panel will display input current, voltage, output power, and real-time temperature. As the internal temperature of the electric furnace increases, the real-time temperature will also increase, indicating that the system is working properly.

Precautions for ash content testing

1. After initial calcination, the sample is taken out and cooled. A small amount of deionized water can be slowly added from the edge of the crucible (not directly added to the residual ash to prevent it from flying) to dissolve the water-soluble salts. The carbon particles covered are exposed, evaporated on a water bath, and placed in a drying oven at 120-130 ℃ to fully dry (remove moisture to prevent the residual ash from scattering due to heating during re ashing), and then burned to a constant weight;

When placing or removing the crucible from the muffle furnace, it should be left at the furnace mouth for a moment to preheat or cool the crucible, in order to prevent it from breaking due to temperature fluctuations;

3. When the crucible clamp is used to heat the crucible, it should be preheated for a moment on an electric furnace or muffle furnace;

4. After burning, the crucible should be cooled to below 200 ℃ before being transferred into a dryer. Otherwise, due to the convective effect of heat, residual ash may scatter, and the cooling rate is slow. After cooling, a large vacuum is formed inside the dryer, and the lid is not easy to open;

5. After burning, the crucible should be cooled to below 200 ℃ before being transferred into a dryer. Otherwise, due to the convective effect of heat, residual ash may scatter, and the cooling rate is slow. After cooling, a large vacuum is formed inside the dryer, and the lid is not easy to open;

When taking out the crucible from the dryer, due to the vacuum inside, when opening the lid to restore normal pressure, it should be lightly moved to allow air to slowly flow in to prevent residual ash from scattering.

MaFu furnace touch screen programmingprecautions

Before using the intelligent PID temperature controller for the muffle furnace, adjust the temperature controller to the desired working temperature, turn on the start code to power on the muffle furnace, and the ammeter will read. The measured temperature value on the temperature controller will gradually increase, indicating that both the muffle furnace and the temperature controller are working normally.

（1） The working environment requires no flammable materials or corrosive gases. It is forbidden to directly inject various liquids or melt metals into the furnace, and the furnace should be kept clean regularly.

（2） When in use, the furnace temperature should not exceed the blast furnace temperature, nor should it work for a long time at the rated temperature. During the experiment, users are not allowed to leave and should always pay attention to temperature changes. If any abnormal situations are found, the power should be immediately cut off and professional maintenance personnel should conduct repairs.

（3） When using, the furnace door should be gently closed and opened to prevent damage to the components. When using crucible tongs to take samples, handle them gently to ensure safety and avoid damaging the furnace.

（4） Do not open the furnace door after the temperature exceeds 600 degrees. Wait for the temperature inside the furnace to cool naturally before opening the furnace door.

（5） After the experiment is completed, the sample is removed from heating and the power is turned off. When placing the sample in the furnace, the furnace door should be slightly opened first, and the sample should be carefully clamped after it has cooled slightly to prevent burns.

（6） The heated crucible should be transferred to a dryer for cooling, placed on a buffered refractory material to prevent moisture absorption, explosion, and cracking, and then weighed.

（7） When transporting muffle furnaces, be careful to avoid severe resonance and place them away from flammable, explosive, water, and other materials. It is strictly prohibited to lift the furnace door to avoid damage to the furnace door.At present, the intelligent energy-saving muffle furnace is controlled by a computer, with accurate and reliable numerical values, and also has alarm and fault diagnosis functions. Firstly, currently the intelligent energy-saving muffle furnace is controlled by a computer, with accurate and reliable numerical values, and also has alarm and fault diagnosis functions.
Secondly, the appearance is novel and beautiful, the quality is sturdy and durable, and the intelligent energy-saving muffle furnace is made of a new type of material with good insulation, and the surface of the shell is not hot to the touch.
In the experiment of coal quality testing, energy-saving muffle furnace and calorimeter are important tools. Among them, the function of energy-saving muffle furnace is to measure the ash content of coal. By measuring the ash content, the quality of coal can be understood. With the improvement of ash content detection, the muffle furnace needs continuous improvement.
There are currently quite a few muffle furnaces on the market, each with different performance levels, ranging from high to low. Among them, the intelligent energy-saving muffle furnace is the most commonly used type. This type of muffle furnace is a major reform of the traditional muffle furnace, which has changed the disadvantages of the previous domestic muffle furnace, such as bulky size, easy damage to electric furnace wires, and slow heating speed. It uses computer intelligent control of the muffle furnace.
Afterwards, the new intelligent energy-saving muffle furnace adopts an integrated structure, which is easy to operate. It is made of high-quality ceramic fiber materials, with excellent insulation effect and fast heating speed, saving more than half of the experimental time.

Laboratory Muffle Furnace Safety Operation Guide

Safety Guidelines

When the muffle furnace is used twice or after a long period of disuse, it must be dried. The baking time should be four hours at room temperature of 200 ℃. 200 ℃ to 600 ℃ for four hours. When in use, the furnace temperature should not exceed the rated temperature to avoid burning out the electric heating elements. It is prohibited to pour various liquids and easily soluble metals into the furnace. The muffle furnace operates at temperatures below 50 ℃, which results in a longer lifespan of the furnace wire.

The muffle furnace and controller must operate in a location where the relative temperature does not exceed 85%, there is no conductive dust, explosive gas, or corrosive gas. When metal materials containing oil or grease need to be heated, a large amount of volatile gases will affect and corrode the surface of the electric heating element, causing it to be destroyed and shorten its lifespan. Therefore, timely prevention and proper sealing of containers or appropriate openings should be taken during heating to eliminate the problem.

The muffle furnace controller should be limited to use within the ambient temperature range of 0-40 ℃.

According to technical requirements, regularly check whether the wiring of the electric furnace and controller is in good condition, whether there is any jamming or retention phenomenon when the pointer of the indicator moves, and use a potential difference meter to calibrate the instrument for errors caused by fatigue and balance failure of magnetic steel, demagnetization, wire expansion, and spring fragments.

Do not suddenly pull out the thermocouple at high temperatures to prevent the jacket from exploding.

Regularly keep the furnace clean and promptly remove oxides and other substances inside the furnace.