As a supplier of CNC milling parts, I understand the critical importance of proper storage in maintaining the quality and performance of these precision - crafted components. CNC milling parts are used in a wide range of industries, from aerospace to automotive, and any damage or degradation during storage can lead to significant problems down the line. In this blog, I'll delve into the key storage requirements for CNC milling parts.
Environmental Conditions
Temperature
Temperature control is one of the most fundamental aspects of storing CNC milling parts. Extreme temperatures can cause thermal expansion or contraction of the parts. For example, metals expand when heated and contract when cooled. This can lead to dimensional changes, which are unacceptable for parts that require high precision.
Most CNC milling parts are best stored at a relatively stable temperature. A range of 20 - 25 degrees Celsius (68 - 77 degrees Fahrenheit) is often ideal. This temperature range helps to maintain the original dimensions of the parts and reduces the risk of internal stress build - up. In facilities where temperature control is challenging, it's important to use insulation and climate - control systems such as air conditioners or heaters to keep the temperature within the desired range.
Humidity
Humidity can have a detrimental effect on CNC milling parts, especially those made of metal. High humidity levels can lead to corrosion, which can compromise the integrity of the parts. For instance, iron - based parts are particularly susceptible to rust when exposed to moisture in the air.
To prevent corrosion, the relative humidity in the storage area should be kept below 50%. Dehumidifiers can be used to achieve and maintain this level. In addition, storing parts in sealed containers with desiccants can further protect them from moisture. Desiccants, such as silica gel packets, absorb excess moisture and help to keep the internal environment of the container dry.
Cleanliness
The storage area for CNC milling parts must be clean. Dust, dirt, and other contaminants can scratch the surface of the parts, which may affect their functionality. For example, in precision - machined parts used in optical or electronic applications, even a small scratch can disrupt the performance.
Regular cleaning of the storage space is essential. Floors should be swept and mopped, and shelves should be wiped down. It's also a good practice to use dust covers or enclosures for the parts. These covers prevent dust from settling on the parts and provide an extra layer of protection.
Storage Containers and Racks
Suitable Containers
Choosing the right storage containers is crucial. Containers should be made of materials that won't react with the parts. For example, plastic containers are often a good choice as they are non - reactive and lightweight. They can also be easily labeled, which helps with inventory management.
For parts that are particularly delicate or prone to damage, foam - lined containers can be used. The foam provides cushioning and prevents the parts from moving around during storage or transportation. This is especially important for parts with complex shapes or sharp edges.
Racks and Shelving
Racks and shelving should be sturdy and well - organized. They should be able to support the weight of the parts without sagging or collapsing. Adjustable racks are ideal as they can be customized to accommodate different sizes of parts.
Parts should be stored in an orderly manner on the racks. Grouping similar parts together and using clear labeling can make it easier to locate and retrieve parts when needed. This reduces the time spent searching for parts and improves overall efficiency.
Protection from Physical Damage
Handling
Proper handling is essential to prevent physical damage to CNC milling parts. When moving parts, it's important to use appropriate lifting equipment, such as hoists or forklifts, if the parts are heavy. For smaller parts, gloved hands should be used to avoid leaving fingerprints or scratches on the surface.
During transportation within the storage area, parts should be placed on padded trolleys or trays. This helps to absorb any shocks or vibrations that could cause damage.
Stacking
Stacking parts should be done with care. Parts should not be stacked too high to prevent them from toppling over. In addition, parts with different shapes and sizes should be stacked in a way that they won't damage each other. For example, parts with sharp edges should be separated from softer or more delicate parts.
Inventory Management
Tracking
Effective inventory management is crucial for CNC milling parts. Using a barcode or RFID (Radio - Frequency Identification) system can help to track the movement of parts in and out of the storage area. This provides real - time information about the quantity, location, and status of each part.
Regular inventory audits should be conducted to ensure that the actual stock matches the records. This helps to identify any discrepancies, such as missing or damaged parts, and allows for timely corrective action.
First - In, First - Out (FIFO)
The FIFO principle should be followed when storing and using CNC milling parts. This means that the parts that were received first should be used first. This helps to prevent parts from sitting in storage for too long, which can increase the risk of damage or degradation.
Specific Considerations for Different Materials
Aluminum Parts
Aluminum is a commonly used material in CNC milling. Aluminum parts are relatively lightweight and have good corrosion resistance. However, they can still be damaged by scratches and abrasion.
For Aluminum Milling Services, it's important to store aluminum parts in a way that protects their surface finish. Soft - lined containers or protective coatings can be used to prevent scratches. In addition, aluminum parts should be stored away from sources of strong acids or alkalis, as these can react with the aluminum and cause corrosion.
Steel Parts
Steel parts are often used in applications that require high strength. However, steel is prone to rust, especially in humid environments. To store steel parts properly, they should be coated with a rust - preventive oil or paint.
In addition, steel parts should be stored in a dry environment with low humidity. If possible, they should be stored in a sealed container with a desiccant to further protect them from moisture. For Mechanical Hardware Parts made of steel, these storage measures are crucial to ensure their long - term performance.
Plastic Parts
Plastic parts can be affected by factors such as UV light, heat, and chemicals. They should be stored in a cool, dark place away from direct sunlight. High temperatures can cause plastic to warp or deform, so it's important to keep the storage temperature within the recommended range.
Plastic parts should also be stored away from chemicals that could react with them. For example, some solvents can dissolve or damage certain types of plastic. When storing CNC Milling Machining Products made of plastic, these considerations are essential to maintain their quality.
Conclusion
Proper storage of CNC milling parts is a multi - faceted process that involves controlling environmental conditions, using suitable storage containers and racks, protecting parts from physical damage, and implementing effective inventory management. By following these storage requirements, we can ensure that the parts we supply remain in optimal condition and meet the high - quality standards expected by our customers.
If you're in the market for high - quality CNC milling parts or have any questions about their storage and handling, we'd love to have a discussion with you. Feel free to reach out to us for more information and to start a procurement conversation.
References
- ASM Handbook Volume 11: Failure Analysis and Prevention. ASM International.
- Manufacturing Engineering and Technology. S. Kalpakjian and S. R. Schmid. Pearson.
- Handbook of Machining with Cutting Tools. K. Jeswiet, N. Aspinwall, and P. De Chiffre. Springer.
