China Injection Mold Components Factory

Yes. Replacement cores, cavity inserts, sliders, lifters, core pins and other custom components can be made from your available drawings, 3D data and existing mold information.

On replacement work the damaged part is not treated as the only reference. Wear, polishing, an earlier repair or a mold modification may have moved its dimensions, so critical mating features are reviewed against the mold before the manufacturing reference is confirmed with you.

A missing drawing does not stop the job, but it does mean we need more from you.

Useful references include the existing component, the mating pocket, related mold parts, 3D mold data, previous revisions, measurement records and clear photos. We review what you have before telling you whether the component can be reconstructed accurately enough to manufacture.

On components with complex forming geometry, both is better.

The 3D model carries the surfaces and geometry, while the 2D drawing usually carries tolerances, datums, steel, hardness, surface finish and the rest of the manufacturing requirements. Both files should represent the same approved revision.

Fit comes from the dimensions and datum relationships in your approved drawing.

On critical inserts, fitting dimensions, locating steps, shoulders and mating surfaces are handled as functional features rather than ordinary outside dimensions.

For a replacement, we may also need pocket or mating information if the mold has been repaired or modified since it was built.

More than individual dimensional tolerances.

The critical features are usually sliding fit, working angle, shutoff geometry, contact surfaces, locating features, travel related geometry and clearance to the surrounding components. Which ones matter most depends on how the part functions in your specific mold.

Yes. Components are made to the steel grade, heat treatment and hardness your approved drawing specifies.

Selection should account for component function, molded resin, wear condition, corrosion resistance and the surface finish you need. We do not treat higher hardness as automatically better for every component, because it usually costs toughness somewhere.

Where it is specified, forming surfaces can be finished to the required polishing condition within our confirmed capability.

Mark the finish on the relevant surfaces, since one component often carries polished forming areas, ground fitting faces, EDM surfaces and machined clearance areas at the same time.

Mirror and cosmetic finishes should be defined before final processing, so the steel condition and the earlier machining support the result you want.

The sequence is planned around the processes that can still move the geometry.

Depending on the component that means rough machining first, a controlled allowance, heat treatment, then grinding, EDM or finish machining. Critical dimensions are verified after the operations that establish the finished geometry, not before them.

Yes, when the features are clearly defined in the drawing or model.

Hole position, drilling depth, channel intersections, O ring groove geometry, threaded connections and sealing surfaces all follow the specified mold design. If you need pressure or leakage testing, define it as part of the project requirements so it is planned and priced in.

Repeat components come from controlled manufacturing information tied to the correct part and revision.

That record holds the approved drawing revision, steel grade, hardness, critical dimensions, surface requirements and inspection criteria. Reusing the same confirmed reference is what keeps your next spare order off outdated mold data.