When selecting over-wire silicone oil, the viscosity of dimethyl silicone oil is a crucial parameter. Too high or too low viscosity may affect over-line effect and product quality. So, how should we choose the appropriate viscosity of dimethyl silicone oil?

1. Understand the viscosity of dimethyl silicone oil
The viscosity of dimethyl silicone oil refers to its ability to resist shear forces, usually expressed in centimeters (cSt). The viscosity directly affects the fluidity and lubricating properties of silicone oil. In the application of wired silicone oil, the choice of viscosity directly affects the sliding performance of the wire and the adhesion ability of the silicone oil on the line.

2. Choose the appropriate viscosity
1. High-speed sewing thread passing through: During high-speed sewing, silicone oil is required to have good fluidity to keep the thread sliding smoothly. At this time, dimethyl silicone oil with a viscosity between 100-350 centiz is often used. Silicone oils in this range can not only provide good lubrication, but also do not increase resistance due to excessive viscosity.

2. Special process requirements: For some processes that require higher adhesion, it may be necessary to choose dimethyl silicone oil with slightly higher viscosity, such as 350-500 centiz. This ensures that the silicone oil adheres better online and provides a lasting lubrication effect.

3. Application in low-temperature environment: In low-temperature environment, the viscosity of dimethyl silicone oil will increase, affecting fluidity. Therefore, when used in cold areas or in winter, products with lower viscosity should be selected to ensure good lubricating performance.

3. Things to note
1. The viscosity selection should be adjusted according to the specific process and operating conditions and cannot be generalized.

2. When replacing silicone oil with different viscosity, the equipment should be thoroughly cleaned to avoid mixing silicone oil with different viscosity to avoid affecting the effect.

3. Check and replace the silicone oil regularly to ensure its performance is stable.

To sum up, when choosing a wired silicone oil, the viscosity of dimethyl silicone oil is a factor that needs to be carefully considered. Correct viscosity selection can ensure smooth sliding of the wire, improve production efficiency, and ensure product quality. In practical applications, the appropriate viscosity range should be selected according to specific requirements and operating conditions.