Operating procedures and precautions for laboratory box furnace

As a common heating equipment, the laboratory box furnace plays an important role in scientific research and industrial production. It can provide a constant temperature or programmed temperature environment for the sample, and is used for many experiments such as material heat treatment, high temperature sintering, solid phase reaction, etc. In this article, the editor of Hut Instrument mainly introduces the operating procedures and precautions of the laboratory box furnace in detail.

1. Operating procedures of laboratory box furnaces

Start-up preparation

Check whether the inside and outside of the laboratory box furnace are clean and tidy, and there are no debris left, so as not to affect the uniformity of the thermal field distribution, or accidental combustion or explosion; check whether the power cord is intact and well grounded to prevent serious hidden dangers such as leakage and virtual connection; check whether the observation window glass is clean and not broken to ensure the visibility of the experimental process; check whether the furnace door and door seal are intact to avoid a large amount of heat and protective gas loss due to airtightness problems; check whether the protective gas pipeline is unobstructed. For high-temperature experiments that require protective gas, the smoothness of the gas pipeline directly determines the adequacy of the atmosphere.

Heating operation

Place the sample to be tested in a suitable position. Be careful not to block the airflow in the furnace. The position and placement of the sample have a great influence on the thermal field distribution. Set the target temperature, heating rate and other parameters according to the experimental requirements. For box furnaces, temperature control is the key. Close the furnace door and ensure that the door lock is in a locked state. Only with a good seal can the ideal thermal field and atmosphere environment be maintained to ensure the reliability of the experimental data. Turn on the ventilation device and the protective gas valve to avoid accidents caused by high temperature accumulation. After everything is ready, press the start switch to start the temperature control system and gradually increase the furnace temperature according to the set program.

Temperature control

During the heating stage, pay close attention to the real-time changes in temperature data to determine whether it is consistent with the set program and whether there are abnormal fluctuations. After reaching the set temperature, adjust to constant temperature or program heating and cooling as needed. For constant temperature experiments, regularly monitor temperature fluctuations to determine whether they are within an acceptable range and make adjustments if necessary.

End of experiment operation procedures

After the experiment, you can choose natural cooling or active cooling; when the temperature drops to a safe value, open the furnace door to take out the sample. Taking it out too early will cause problems such as thermal expansion and contraction, oxidation, etc.; close the protective gas valve and ventilation device to avoid wasting energy; turn off the power and clean the residue in the furnace. 

2. Precautions for the operation of laboratory box furnaces

Personnel safety: Operators must undergo professional training and be familiar with safe operating procedures. When operating at high temperatures, they must wear protective gloves. When opening the furnace door, be careful of burns caused by high-temperature airflow.

Ventilation conditions: When operating a laboratory box furnace, ensure that there is enough ventilation space around the furnace body to avoid accidents caused by heat accumulation. If there is residual corrosive gas, ventilation should be strengthened.

Electrical safety: Check the power cord and grounding before use to ensure reliable grounding, comply with electricity regulations, avoid electrical faults such as leakage and overload, and suspend use during thunderstorms to prevent power surges from damaging the equipment.

High temperature environment: Pay attention to wearing protective equipment. Be extra careful when operating the door at high temperatures to prevent deformation of the door body that affects the sealing.

Protective gas: Ensure that the gas pipeline is unobstructed, without leakage, scaling and other problems. Select appropriate protective gas according to needs, such as argon, nitrogen, etc. When using flammable gas, pay special attention to fire and explosion safety.

The above is the editor's introduction to the operating procedures and precautions of the laboratory box furnace. I hope it will be helpful to you. If you want to know more about the operating skills of the laboratory box furnace or have equipment procurement needs, you can leave a message or contact us by phone.