Products Description
Injection Molding with Metal Inserts is a process to make the components no need secondary assemble to metal parts. The metal parts can be Inserts or Clips or other machined components. Like Stainless steel, brass…The critical point is the Metel Inserts must withstand the injection molding temperature (Typical: 150-300°C). At XC Precision, the most often we do was injection molding with the brass insert or sheet metal clips.
What is Insert Injection Molding Process?
Injection Molding with Metal Inserts is also called Insert injection molding. It is a specialized manufacturing process where a pre-formed component (the metal inserts) into a mold cavity before plastic injection. The molten plastic is then injected around the insert, encapsulating it and forming a single, integrated part after cooling. Injection Molding with Metal Inserts can have the following advantages:
Eliminates secondary assembly (e.g., gluing or screwing inserts afterward).
Provides strong mechanical bonding (plastic shrinks around insert).
Reduces part weight compared to all-metal alternatives.
Improves precision and repeatability.
The Common Injection Molding Defects and Solutions
|
Defect |
Appearance |
Main Reasons |
Solutions |
|
Sink Marks |
Surface depressions or dents |
Insufficient Pressure or uneven wall thickness |
Increase pressure; Optimize wall thickness design |
|
Flash |
Excess material at edges |
Insufficient clamping force or worn mold |
Increase clamping force; repair or replace mold |
|
Weld Lines |
Visible linear marks on surface |
Low temperature at material flow convergence points |
Increase mold temperature; improve venting |
|
Warpage |
Product distortion and deformation |
Uneven cooling / molecular orientation |
Optimize cooling channels; adjust gate design |
|
Silver Streaks |
Silvery or streaky marks on surface |
Un-dried material moisture |
Fully dry raw materials before casting |
|
Burn Marks |
Yellow or black spots on surface |
Trapped gas ignited by compression |
Improve venting; reduce injection speed |
|
Short Shots |
Incomplete filling of the mold cavity |
Insufficient injection pressure / low temperature |
Increase injection pressure and temperature; enlarge gate size |
Quality Control and Inspection Equipment
At XC Precision, we ISO9001 certified. We take seriously on quality control, we have the standard quality process, with various inspection equipment and professional QC Team.
From raw materials incoming and during the machining process to final products for shipping. We strictly control the quality in each step.
- Make sure the materials are correctly used.
- Make sure the dimensions are strictly control within a high standard
- Make sure the appearance are in perfect situation as customers' need
Each component should be passed the quality inspections and then go for shipping
Our injection molding expert is here to help you choose the right finish for your project. Send your design drawings and requirements, we can quote within 24 hours.
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