The operating procedures of the fully automatic metallographic embedding machine cover multiple aspects such as equipment preparation, sample and material preparation, parameter setting, equipment startup and operation, sample unloading and retrieval, subsequent processing, and equipment maintenance. The following is a detailed introduction:
1、 Equipment preparation
Cleaning equipment: Before use, check whether the surface and working area of the machine are clean, and remove any remaining debris, especially the electric wood powder or other inlay materials sticking to the edges of the upper and lower modules. Woodworking saw blades or broken steel saw blades can be used to clean, but do not apply too much force to avoid scratching the modules.
Check components: Ensure that all parts of the equipment are intact and undamaged, such as fixtures, molds, control systems, etc.
Preheating equipment: Place the equipment on a stable workbench, connect the power supply, turn on the power for preheating, and raise the temperature of the equipment to the set temperature (usually 130-140 ℃).
2、 Sample and material preparation
Preparation of samples: Select the metallographic specimen to be embedded, ensuring that the surface of the specimen is clean and free of oil stains. You can clean the surface with alcohol or acetone and then air dry it. At the same time, confirm that the sample size and shape meet the equipment requirements, and remove burrs and dirt.
Choose inlay materials: Based on the material of the sample and experimental requirements, select suitable inlay resin materials and hardeners.
Select mold: Choose a suitable embedding mold based on the size of the sample to ensure that the sample can be wrapped.
3、 Parameter settings
Adjust the position of the mold: Adjust the handwheel or use the equipment interface to make the lower mold parallel to the lower platform.
Place the sample: Place the metallographic sample into the mold, ensuring that the sample is fixed at the bottom center of the mold. If there are multiple samples, ensure that there is enough space between them and that they do not come into contact with each other.
Add inlay material: Pour the pre prepared resin material into the mold to ensure coverage of the sample. You can gently tap or rotate the mold to help evenly distribute the resin material.
Set process parameters: Based on the requirements of the sample, set the temperature, pressure, and time parameters of the equipment. Common settings include heating temperature (usually around 150 ℃), heating time (about 10-20 minutes), and pressure (such as 100-200MPa).
4、 Equipment startup and operation
Start the device: After confirming that all parameter settings are correct, start the device. The device will automatically complete operations such as loading, embedding, and unloading samples.
Monitoring the operating status: During the operation process, close attention should be paid to the operating status of the equipment. If there are any abnormal situations, the operation should be stopped immediately.
5、 Sample unloading and removal
Cooling: After heating and pressurization are completed, wait for the equipment to cool automatically or manually to ensure resin curing. You can leave it for a period of time or use a cooling system to accelerate the cooling process.
Unloading the sample: After cooling, open the mold according to the equipment operation guide and remove the embedded metallographic specimen. At this point, the resin has wrapped around the sample and the sample is fixed in the resin.
6、 Subsequent processing and equipment maintenance
Check the quality of the inlay: Check the inlay effect of the sample to ensure that there are no problems such as bubbles or cracks. If there are any issues, it may be necessary to re operate or adjust the relevant parameters.
Follow up processing: Send the embedded sample to cutting, grinding, polishing and other equipment for further processing, and prepare for metallographic observation.
Cleaning equipment: After the operation is completed, clean all parts of the equipment, especially the residues on the modules, to prevent them from affecting the next use. Alcohol or specialized cleaning agents can be used for cleaning.
Regular maintenance: Regularly inspect the electrical, mechanical, and temperature control systems of the equipment to ensure the normal operation of all parts.