Views: 0 Author: Site Editor Publish Time: 2025-01-20 Origin: Site
The following general operation steps of the ipoli - 2d - 200m manual metallographic grinding and polishing machine are provided by Mikrosize Equipment Supplier: Ⅰ. Pre - operation Preparation 1. Equipment Inspection: Ensure that the power connection of the grinding and polishing machine is normal, all components are undamaged, the grinding disc and polishing cloth are firmly installed, and the speed - regulating knob is in the off or low - speed position. 2. Sample Preparation: Select the metallographic samples to be ground and polished. Make sure the sample size is suitable for operation on the grinding and polishing machine, usually in the form of regular blocks or sheets. If there are oil stains, rust, etc. on the sample surface, clean it thoroughly with appropriate solvents such as alcohol or acetone first. 3. Preparation of Grinding Consumables: According to the material and hardness of the sample, choose suitable grinding sandpapers. Usually, start with coarse - grit sandpapers (e.g., 180 - grit, 240 - grit) and gradually transition to fine - grit sandpapers (e.g., 800 - grit, 1000 - grit, 1200 - grit, etc.). At the same time, prepare the polishing liquid and polishing cloth. Ⅱ. Grinding Stage 1. Sandpaper Installation: Smoothly paste the selected coarse - grit sandpaper onto the grinding disc, ensuring that the sandpaper adheres tightly to the grinding disc without air bubbles or wrinkles. 2. Sample Fixation: Fix the sample above the grinding disc either by using a clamp or by hand - holding. Keep the sample perpendicular to the sandpaper surface and apply gentle pressure to ensure full contact between the sample and the sandpaper. 3. Start Grinding: Turn on the power of the grinding and polishing machine and adjust the speed to an appropriate level. Generally, for rough grinding, the speed can be around 150 - 250 revolutions per minute. Hold the sample by hand or use a clamp to make the sample move in a circular or reciprocating motion on the grinding disc. Continuously add an appropriate amount of water or grinding fluid during the grinding process to cool the sample and flush away the grinding debris, preventing the sample from overheating and the sandpaper from clogging. 4. Sandpaper Replacement: When the scratches on the sample surface are basically uniform and the required grinding degree is reached, turn off the power, replace it with a finer - grit sandpaper, and continue grinding according to the above steps. Each time the sandpaper is replaced, clean both the sample and the grinding disc to avoid the grinding debris from the coarse - grit sandpaper from getting into the grinding process of the fine - grit sandpaper, which may affect the grinding effect. Repeat this process until the grinding is completed with the finest - grit sandpaper. Ⅲ. Polishing Stage 1. Polishing Cloth Installation: Install the polishing cloth smoothly on the polishing disc, ensuring that the polishing cloth has no wrinkles and is not loose. 2. Addition of Polishing Liquid: Drop an appropriate amount of polishing liquid onto the polishing cloth. The type and amount of the polishing liquid depend on the material of the sample and the polishing requirements. 3. Start Polishing: Turn on the power and adjust the speed to a level suitable for polishing, generally around 180 - 300 revolutions per minute. Gently place the ground sample on the polishing cloth, apply appropriate pressure to ensure full contact between the sample and the polishing cloth, and make the sample move in a circular motion or with a slight swing for the polishing operation. Maintain an appropriate supply of polishing liquid during the polishing process to ensure the polishing effect and prevent the sample from overheating. 4. Observation of Polishing Effect: Regularly remove the sample from the polishing machine, rinse it with clean water, and then observe the polishing effect under a metallographic microscope or magnifying glass. If there are still scratches or unevenness on the sample surface, continue the polishing operation until a satisfactory mirror - like finish is obtained. Ⅳ. End - work Procedures 1. Sample Cleaning: After polishing, remove the sample from the polishing machine, rinse it thoroughly with clean water to remove the polishing liquid and grinding debris on the surface. Then, use organic solvents such as alcohol for dehydration treatment, and finally dry it with a hair dryer or compressed air. 2. Cleaning of iPoli - 2D - 200M Metallographic Manual Grinding Polishing Machine: Turn off the power of the grinding and polishing machine. Use clean water and a brush to clean the grinding disc and polishing cloth to remove the grinding debris and polishing liquid, and then dry them with a clean cloth. If the sandpaper and polishing cloth are severely worn, replace them in a timely manner for future use. 3. Organization of Tools and Consumables: Organize the used sandpapers, polishing liquid and other tools and consumables properly and store them in a proper place.