UTTMould controls injection mold and plastic injection molding quality from the first DFM review to final mold shipment or molded part delivery. The goal is to find tooling, dimensional, cosmetic and production risks early, before they become expensive mold changes or production delays.
For overseas buyers, quality control is not only a final inspection step. It is a project workflow that covers design review, material confirmation, machining checks, mold assembly, T1 sampling, dimensional inspection, mold correction and packaging verification.
| Stage | What UTTMould Checks | Buyer Value |
|---|---|---|
| DFM review | Wall thickness, ribs, bosses, draft, undercuts, parting line, gate position, ejection, shrinkage and visible surface risks. | Reduces mold changes before steel cutting and helps avoid sink marks, warpage, flash and difficult demolding. |
| Mold design review | Mold structure, runner and gate layout, cooling design, slides, lifters, inserts, vents and mold standard requirements. | Confirms that the mold design matches the part function, production target and approval requirements. |
| Material and steel checks | Mold steel confirmation, steel hardness, mold base dimensions and critical purchased components. | Helps verify mold durability and consistency before machining and assembly. |
| Machining inspection | Electrodes, core and cavity dimensions, inserts, fitting surfaces and critical tooling components after CNC, EDM or wire cutting. | Reduces assembly problems and dimensional errors before mold trial. |
| Mold assembly check | Parting line fit, slide/lifter movement, ejector movement, cooling connection, venting and safety details. | Improves trial stability and reduces mold trial delays caused by mechanical issues. |
| T1 mold trial | Trial molding parameters, part filling, appearance, flash, sink marks, warpage, short shots, ejection marks and assembly fit. | Shows how the mold performs with real plastic material before approval or correction. |
| First article inspection | Critical dimensions, drawing requirements, cosmetic surfaces, material confirmation and functional fit where applicable. | Provides evidence for sample approval and helps buyers decide the next mold correction step. |
| Final inspection | Final mold condition, approved samples, spare parts, mold plates, water lines, packing and export protection. | Reduces shipment risk for export molds and supports smoother production startup after delivery. |
CMM inspection with Hexagon INSPECTOR CLASSIC coordinate measuring machine and PC-DMIS 2018 software
| Risk | Possible Cause | Control Method |
|---|---|---|
| Sink marks | Thick ribs, bosses, uneven wall thickness or poor gate position. | DFM review, wall thickness advice, gate review and T1 sample inspection. |
| Warpage | Uneven shrinkage, poor cooling, material behavior or unbalanced part geometry. | Mold flow support, cooling review, material shrinkage review and trial adjustment. |
| Flash | Poor parting line fit, high pressure, venting issue or mold wear. | Parting line inspection, fitting checks and molding parameter review. |
| Short shots | Insufficient filling, venting problems, gate restrictions or process instability. | Gate and venting review, mold trial validation and process feedback. |
| Dimensional variation | Material shrinkage, unstable molding parameters, tooling tolerance or cooling difference. | Critical dimension inspection, CMM checks when required and correction tracking. |
| Cosmetic defects | Surface texture, flow marks, weld lines, scratches, ejector marks or polishing issues. | Surface requirement confirmation, trial sample review and appearance inspection. |
Yes. UTTMould checks mold trial status, final mold condition, approved samples, spare parts and export packing requirements before mold shipment.
Molded parts can be checked for critical dimensions, appearance, fit, function, material requirements, color, surface finish and packing requirements before shipment.
Yes. Buyers can request dimensional inspection for critical dimensions, and CMM inspection can be used when the project requires higher measurement confidence.
DFM review, mold trials, first article inspection and process checks help find tooling, dimensional and cosmetic issues before mass production or shipment.
Buyers should provide 3D files, 2D drawings, critical dimensions, material requirements, surface finish requirements, assembly requirements and acceptance criteria.
