Junying Die Casting Company
What is the cooling time required within the injection mold?
Dec 12, 2018
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A question we often hear when designing and manufacturing injection molds is "what is the cooling time that an injection mold needs?" The answer to the cooling time required rests with a few factors, covering the processing parameters, the materials adopted, and without doubt, the design of the part and the mold itself.
Mold forming parameters affecting cooling time and shrinkage speed
The mold forming parameters have great influence on the final performance of injection molding parts. The processing conditions that affect the geometry of the final part involve temperature, packaging parameters (clamping pressure and barrel size), cooling time, and injection speed. All these conditions work well in how the material solidifies and the required cooling time to meet the part specifications.
An injection molding processor shall work in close cooperation with the mold designer to make the best tool design according to the injection molding conditions.
Resin and shrinkage
Although resins can directly affect cooling time and shrinkage rates, because each polymer owns its specific properties, the mold forming conditions can also have a great influence on the properties of the final material for any part design. The melt temperature and the mold temperature are the two most essential mold forming parameters that have impact on the polymer materials.
Experienced mold designers are familiar with the different properties of polymer resins and, over and above the shrinkage rate of the materials, can design the mold according to the specific molding process parameters.
Mold design and cooling time
The mold design, or the geometry of the parts themselves, will affect the way the parts cool in the mold. As the part starts to cool, it begins to solidify closest to the mold and gradually move inwards to the center of the mold. As a result, a thick part may have a central area that does not solidify fast enough, which produces stress, leading to dent marks on the outer surface.
If a part possesses an area with uneven wall thickness, stress may be generated during the cooling phase when a thinner part solidifies faster than a thicker part, leading to warping of the part.
Experienced design engineers understand the way the parts cool in the molds and will design the cooling systems according to the geometry of the parts, the resin adopted and the processing parameters. The cooling system is composed of water pipes that pass through the mold to correctly cool the parts. The mold designer should be so elaborative that the cooling pipeline does not affect the clamping system or the tie rod of the molding press.
Ex Mould is a custom, precision mold manufacturing company, with rich experience in designing complicated tools for a wide range of molding conditions. We integrate our experience with the latest technological progress to supply the most suitable computer-aided mold design that is tailored to your project's requirements, according to the manufacturing conditions, the resin used and the part geometry,
Ex Mould has always been committed to meeting customer requirements in the injection mold design and mold manufacturing. We are an ISO registered mold manufacturing company. Feel free to contact us for a free design suggestion and talk to our outstanding design engineers.
Mold forming parameters affecting cooling time and shrinkage speed
The mold forming parameters have great influence on the final performance of injection molding parts. The processing conditions that affect the geometry of the final part involve temperature, packaging parameters (clamping pressure and barrel size), cooling time, and injection speed. All these conditions work well in how the material solidifies and the required cooling time to meet the part specifications.
An injection molding processor shall work in close cooperation with the mold designer to make the best tool design according to the injection molding conditions.
Resin and shrinkage
Although resins can directly affect cooling time and shrinkage rates, because each polymer owns its specific properties, the mold forming conditions can also have a great influence on the properties of the final material for any part design. The melt temperature and the mold temperature are the two most essential mold forming parameters that have impact on the polymer materials.
Experienced mold designers are familiar with the different properties of polymer resins and, over and above the shrinkage rate of the materials, can design the mold according to the specific molding process parameters.
Mold design and cooling time
The mold design, or the geometry of the parts themselves, will affect the way the parts cool in the mold. As the part starts to cool, it begins to solidify closest to the mold and gradually move inwards to the center of the mold. As a result, a thick part may have a central area that does not solidify fast enough, which produces stress, leading to dent marks on the outer surface.
If a part possesses an area with uneven wall thickness, stress may be generated during the cooling phase when a thinner part solidifies faster than a thicker part, leading to warping of the part.
Experienced design engineers understand the way the parts cool in the molds and will design the cooling systems according to the geometry of the parts, the resin adopted and the processing parameters. The cooling system is composed of water pipes that pass through the mold to correctly cool the parts. The mold designer should be so elaborative that the cooling pipeline does not affect the clamping system or the tie rod of the molding press.
Ex Mould is a custom, precision mold manufacturing company, with rich experience in designing complicated tools for a wide range of molding conditions. We integrate our experience with the latest technological progress to supply the most suitable computer-aided mold design that is tailored to your project's requirements, according to the manufacturing conditions, the resin used and the part geometry,
Ex Mould has always been committed to meeting customer requirements in the injection mold design and mold manufacturing. We are an ISO registered mold manufacturing company. Feel free to contact us for a free design suggestion and talk to our outstanding design engineers.
