1. Relationship between thermal conductivity and cooling rate
The thermal conductivity of Mold Waterway Water Isolation Sheet directly affects the cooling rate of the mold. When the thermal conductivity of the water isolation sheet is good, it can quickly transfer the heat inside the mold to the cooling water. For example, in an injection mold, a large amount of heat is released after the plastic melt is injected into the cavity. If the water isolation sheet can efficiently transfer heat, the heat will be quickly transferred to the surrounding cooling water channel through the water isolation sheet, thereby accelerating the cooling process of the mold. On the contrary, if the thermal conductivity of the water isolation sheet is poor, the heat transfer will be blocked and the cooling time of the mold will be extended, which may lead to a longer production cycle and reduce production efficiency.
2. Impact on mold temperature distribution
The thermal conductivity also affects the temperature distribution of the mold. A high-quality water isolation sheet can evenly distribute the heat inside the mold. In the cooling water system of the mold, the heat is transferred through the water isolation sheet, so that the heat in different areas can be taken away more evenly. This is very important to ensure the dimensional accuracy of each part of the mold. Taking the die-casting mold as an example, if a certain area cools too slowly due to poor heat conduction of the water isolation sheet, it may cause deviations in the casting size of the area, affecting the product quality. Good heat conduction performance can ensure that the overall temperature of the mold drops evenly, avoiding product defects caused by local overheating or overcooling.
3. Correlation with cooling efficiency and impact on product quality
The thermal conductivity of Mold Waterway Water Isolation Sheet is closely related to cooling efficiency. Efficient heat conduction can improve cooling efficiency, which in turn affects the quality and performance of the product. In the extrusion mold, the surface quality and shape accuracy of the product are closely related to the cooling effect of the mold. Good heat conduction performance of the water isolation sheet can quickly reduce the surface temperature of the mold, so that the extruded product can be quickly shaped, reducing product deformation and surface defects. For example, for high-precision plastic pipe extrusion molds, suitable heat conduction performance of the water isolation sheet helps to produce pipes with precise dimensions and smooth surfaces.
4. Different thermal conductivity performance in different processes
In different mold processing processes, the impact of the thermal conductivity of the water isolation sheet is different. In the rapid prototyping process, the mold needs to be cooled quickly to achieve rapid demoulding and improve production efficiency. At this time, the water-blocking sheet with high thermal conductivity has obvious advantages. In some processes that require more precise temperature control, such as precision casting, the water-blocking sheet is not only required to have good thermal conductivity, but also to be able to accurately adjust the speed of heat transfer. Because too fast cooling may cause problems such as stress concentration inside the casting, it is necessary to select a water-blocking sheet with appropriate thermal conductivity according to the specific process requirements to achieve the best cooling effect and product quality.
