What are the causes and solutions for the deformation of injection parts?

What are the causes and solutions for the deformation of injection parts?

1, the reasons for the deformation of injection parts can include the following 5 kinds:

(1) Uneven cooling: During the cooling process, if the cooling time is not enough, or the cooling is not uniform, it will lead to high temperature in some areas and low temperature in some areas, resulting in deformation.
(2) Improper mold design: Unreasonable mold design, such as improper gate location, or improper mold temperature control, will also lead to deformation of injection parts.
(3) Improper injection speed and pressure control: improper injection speed and pressure control will lead to uneven flow of plastic in the mold, resulting in deformation.
(4) Improper plastic materials: Some plastic materials are more prone to deformation during the injection process, such as thin-walled parts and long process parts.
(5) Improper demoulding: If the demoulding speed is too fast, or the top force is not uniform, it will lead to the deformation of the injection parts.

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2, the method to solve the deformation of injection parts can include the following 6 kinds:

(1) Control the cooling time: ensure that the injection parts are fully cooled in the mold, and avoid the temperature of some areas is too high or too low.
(2) Optimize the mold design: reasonable design of the gate position, control the mold temperature, to ensure the uniform flow of plastics in the mold.
(3) Adjust the injection speed and pressure: Adjust the injection speed and pressure according to the actual situation to ensure the uniform flow of plastic in the mold.
(4) Replace the appropriate plastic material: For plastic parts that are easy to deform, you can try to replace other types of plastic materials.
(5) Optimize the demoulding process: control the demoulding speed and ejector power to ensure that the injection parts are not subjected to excessive external forces during the demoulding process.
(6) The use of heat treatment method: for some large deformation injection parts, heat treatment method can be used to correct.

To sum up, the solution to the deformation of injection parts needs to start from many aspects, including controlling the cooling time, optimizing the mold design, adjusting the injection speed and pressure, replacing the appropriate plastic material, optimizing the demoulding process and using the heat treatment method. Specific solutions need to be adjusted and optimized according to the actual situation.


Post time: Dec-20-2023