Few Reasons:
If the punch Corrosion is in upper or lower, the main factor is very little or no lubrication, or the viscosity of the type of oil is not suitable, and if the design or drawing of the punch is not suitable with the cams of the machine, Corrosion in the punch Oblong appears with us.
- Lack of proper cleaning of the cams during washing
- No cleaning of the benches between operations in the large campain at a fixed rate
- Not choosing a good type of punch or not choosing a punch that is suitable for the type of powder: Atmospheric humidity
- One of the main causes of corrosion is Excess Humidity This is because corrosion often forms where there is oxygen in the air
Humidity that holds water. The percentage of water vapor in the air varies with temperature and can range from 0.2% to 4% water vapor. Excess Humidity can be in the airlock, instrument storage area, or places where the drug formulation is stored before pressing and its Significant influence on Corrosion formation in tools. It is therefore very important to control the environment in all areas of production. Since we cannot remove oxygen from the air and because the tools are made of steel, environmental factors must be present to regulate the temperature and humidity and reduce Humidity to prevent Corrosion on the punches.
Solutions
- Adjust the oilling rate and choose a suitable oil, such as the one attached in the Manual or its equivalent. Choose the punch very carefully and accurately.
- Ensure the cleaning process for the cams during the washing process. Make a constant rate of cleaning for the punch during operation campagin. Pay great attention to monthly maintenance for the machine.
- Continuously monitor the stifness during operation and enter a small limit to alert that some machines have grease. Pay attention to the viscosity of the grease and always lubricate the cams. Even if the machine does not have a grease pump, after cleaning the cams, we start putting some grease on the cams only.
Alert
The grease must have a very light viscosity so as not to clog the lubrication area. Currently, punch companies have solved the problem of Corrosion. It remains in Oblong punches. The head is made movable in the upper and lower punches to protect it from friction. Improving the environment in which tools are stored can have a significant impact on preventing Corrosion. , but other solutions should also be considered.
Read also: Tablet Tooling in Pharmaceutical Industry
Resource Person: Islam Ahmed
