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Injection Mould Repair


Weld with the same material the mold was made from; i.e P-20, S-7, H-13 or stainless steel. If the same material is not used, the weld may etch at a different rate leaving a witness line around the weld when repairing the texture.

Molds must be properly heated prior to welding. If not properly heated, it can cause the weld to cool too quickly. If this happens, even when using the same material, it will cause the weld to etch at different rate which would then require stress tempering to normalize the steel to get a constant etch for the best repair result.

With the advances of the laser texturing industry we have developed a laser repair process at DJmoldng that can be used on any mold whether it was laser textured or chemically etched to repair the damaged areas. Through this process we can laser repair the area and blend into the existing texture eliminating any visual defects restoring your tool to a like-new condition.

Injection mold repair is a crucial process to restore the functionality and integrity of a damaged or worn-out injection mold. Over time, molds may experience wear, damage, or issues that can affect the quality of the molded parts. Repairing the mold helps to extend its lifespan, reduce production downtime, and maintain consistent part quality. Here is an overview of the injection mold repair process.

Assessment and Evaluation: The first step in mold repair is to assess the condition of the mold and identify the specific issues or damages. This involves a thorough inspection of the mold components, including the core, cavity, cooling channels, gating system, and ejection system. The assessment helps to determine the extent of the repair required and develop a repair plan.

Repair Plan Development: Based on the assessment, a repair plan is developed to address the identified issues. The plan outlines the specific repairs, modifications, or replacements needed for the mold components. It may include repairs such as welding, machining, polishing, or texturing, as well as the replacement of damaged or worn-out parts.

Component Repair: The actual repair work begins by addressing the identified issues. This can involve various techniques and processes depending on the nature of the damage. For example, damaged or worn-out surfaces may require welding or machining to restore the original dimensions and contours. Cooling channels may need cleaning or rerouting to ensure efficient cooling. Any damaged or malfunctioning components, such as ejector pins or slides, may be repaired or replaced.

Surface Refinishing: After the necessary repairs, the mold surfaces may undergo refinishing processes to restore the desired surface texture and appearance. This can include polishing, grinding, or texturing to achieve the required finish on the molded parts.

Testing and Validation: Once the repairs are complete, the mold undergoes testing and validation processes. This involves conducting trial runs with the injection molding machine to verify that the repaired mold functions correctly and produces parts of the desired quality. It also helps to identify any further adjustments or modifications needed.

Preventive Measures: Alongside the repairs, preventive measures may be implemented to minimize the risk of future damage or issues. This can include the application of protective coatings or implementing maintenance procedures to ensure proper mold care and longevity.

Documentation: It is important to maintain detailed documentation of the repair process, including the issues identified, repairs performed, parts replaced, and any modifications made. This documentation helps in tracking the repair history and aids in future maintenance or troubleshooting.

Read more:  https://www.djmolding.com/injection-mould-repair/

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