Injection molding is a commonly used plastic parts fabrication manufacturing process. There are different types of products manufactured using this method which vary in complexity, size and application. Automotive parts moulding is another sector that uses this process to different plastic automotive parts.
Process:
Injection molds achieved using injection molding machines, mold and raw plastic material. In the process of manufacturing auto parts, the plastic is first melted in the molding machine before it is then injected into mould, where allowed to cool and get the desired shape of product. HQ Mould is the professional manufacturer focusing on plastic injection moulding for almost 40 years.
Let us discuss the challenges and defects that make the process difficult:
Sometimes in automotive parts molding, the molten material may seep out of mould cavity and then solidifies. Because of this defect, thin layer of material attached along the parting line of the part interfering with the final quality of automotive product.
Warping:
There will be a permanent bending in the final product due to non-uniform rate of cooling and it is a common challenge in the field of automotive parts molding.
Sink marks:
The other difficulty faced in automotive parts molding process is the occurrence of sink marks. This usually occurs when the injection pressure is too low and non-uniform cooling rate.
Bubbles:
Bubbling is another problem to achieve the desired final automotive parts. It happens when the material used has too much moisture or when the injection temperatures are too high and hence, affecting the look of product in automotive parts molding.