7 points that should be paid attention to in the use and maintenance of the muffle furnace

The muffle furnace is a dry pretreatment equipment for samples in the analysis laboratory. It is a universal heating equipment and can be divided into box furnaces, tube furnaces, and crucible furnaces according to the appearance and shape. It is used for melting experiments in metallurgical laboratories, annealing, quenching and other experiments in heat treatment departments, and heating auxiliary equipment that is indispensable for other occasions that require high temperatures. It is widely used. Pay attention to the following 7 points in daily use and maintenance of the muffle furnace:

1. Be sure to pay attention to temperature changes during the use of the muffle furnace. Because the ash content of coal is made for a relatively long period of time, some samples, such as the experiment period of recarburizers, are relatively long. How long can it be completely burned and how much temperature For him to burn completely, he must prepare for the experiment and pay attention to the changes in the temperature control system.

2. Because the muffle furnace is in a high temperature environment, some flammable and explosive materials cannot be put in, if it is really necessary to make protective preparations. Strongly corrosive products and products that are easily deformed by heat (such as plastic plugs, etc.) must not be placed in the oven; drugs that interact with each other must not be placed in the same oven.

3. Be sure to perform experiments in strict accordance with the experimental procedures and requirements, pay close attention to the temperature when baking the samples, and do not bake utensils, desiccants, etc. at the same time.

4. Regular temperature correction, some products have poor quality temperature measuring parts, so regular inspection and maintenance should be done.

5. The furnace must be kept clean, and the asbestos board must be laid at the bottom of the furnace to prevent the sample from being spilled into the furnace and damaging the furnace body.

6. Pay attention to the standard temperature of the muffle furnace. If your muffle furnace is a 950 degree furnace, it cannot be over-temperature tested. It is dedicated for special furnaces. Do not do over-temperature experiments.

1. The standard power of the muffle furnace is relatively high, and the circuit requirements are relatively high. The muffle furnace special line is dedicated, and it is not allowed to share a circuit with other instruments. Turn off the temperature controller when the muffle furnace is used up, and turn off the electricity in time.