Precautions for using industrial vacuum heat treatment furnace

05-08-2025       Author: KJ technology

When using an industrial vacuum heat treatment furnace, it is necessary to pay attention to relevant matters before, during, and after operation to ensure the normal operation of the equipment, product quality, and personnel safety. The following are specific instructions:

Before operation

Check the equipment: Before each use, carefully inspect all components of the vacuum heat treatment furnace, including the vacuum pump, heating element, temperature control system, vacuum sealing device, etc. Ensure that the oil level of the vacuum pump is normal, the heating element is not damaged or short circuited, the temperature control system's sensors are accurate, and there is no leakage in the vacuum sealing area.

Cleaning the furnace: Before use, the furnace must be cleaned thoroughly to remove debris, dust, and any remaining substances from previous use, in order to avoid affecting the heat treatment effect and even contaminating the product.

Preparation of materials: Prepare the metal materials to be processed according to the process requirements, and ensure that the size and shape of the materials meet the requirements of the equipment. At the same time, necessary fixtures and jigs should be prepared to fix and clamp the materials, ensuring the stability of their position and state during the processing.

During operation

Control process parameters: strictly follow established process procedures to set and control parameters such as temperature, vacuum degree, gas flow rate, etc. The heating rate, insulation time, and cooling method should be precisely controlled according to the type, specifications, and specific heat treatment requirements of the material to avoid product quality problems caused by improper parameter settings.

Monitoring equipment operation: During the operation of the equipment, operators should closely observe the operating status of the equipment, including temperature rise, changes in vacuum degree, and stability of gas flow rate. At the same time, pay attention to whether there are any abnormal sounds, odors, or vibrations in the equipment. If any abnormalities are found, the machine should be stopped immediately for inspection and troubleshooting before resuming operation.

Safe operation: During the operation process, it is necessary to strictly follow the safety operation regulations, and it is prohibited to open the furnace door or perform unnecessary operations while the equipment is running. When filling gas or performing other operations that may cause pressure changes, it should be done slowly to prevent safety accidents caused by sudden pressure changes. In addition, it is necessary to ensure good grounding of the equipment to prevent electric shock accidents.

After operation

Cooling and removal from the furnace: After the heat treatment process is completed, cooling should be carried out according to the process requirements. The cooling methods usually include furnace cooling, rapid cooling, etc. The appropriate cooling method should be selected according to the characteristics of the material and the subsequent processing requirements. After the temperature inside the furnace drops to the specified temperature, the furnace door can be opened to take out the processed product. Be careful when removing from the furnace to avoid collision or damage to the processed products.

Equipment cleaning and maintenance: Timely clean the debris and dust in the furnace, and clean and maintain the used fixtures, tools, etc. At the same time, according to the usage of the equipment and the requirements of the maintenance manual, regular maintenance and upkeep of the equipment should be carried out, such as replacing the vacuum pump oil, cleaning the vacuum valve, checking the connection of the heating element, etc., to extend the service life of the equipment and ensure its stable performance.

Record and Summary: Detailed records of process parameters, equipment operation, product quality, and other information for each heat treatment, in order to facilitate quality traceability and process improvement. Summarize the problems and solutions encountered during the operation process, providing reference for future operations.