--- id: "mold-design-en" title: "Mold Design & Manufacturing | DFM and Precision Mold Making | Zhongde Precision" description: "DFM review, mold engineering, precision machining, EDM, assembly, trials, correction and production-launch support for injection, die-casting, MIM and PM molds." source: "/en/mold-design-manufacturing" language: "en" generated: true --- # Mold Design & Manufacturing From DFM to Stable Mass Production For precision injection molds, die-casting molds, MIM / PM molds and dedicated fixtures, we provide DFM review, mold engineering, precision manufacturing, trials, correction, maintenance and production-launch support. ## What Is Mold Design and Manufacturing? A complete engineering approach connecting product structure, forming method, dimensional stability, appearance requirements and production cycle time. Production-oriented mold engineering begins with the requirements of the finished part, including dimensions, appearance, assembly relationships and cycle time. Parting, gating, venting, cooling, ejection and downstream machining datums are evaluated in advance. Zhongde Precision integrates mold engineering with forming, CNC machining, surface finishing and assembly. Mold-trial results can therefore be fed back quickly into correction, while dimensional stability and manufacturing feasibility are verified before production launch. - DFM Review - Mold Structure Design - Precision Mold Machining - Trials and Correction - Production Launch ## Mold and Tooling Scope Precision injection, aluminum and zinc die-casting, MIM / PM molds and dedicated tooling, with mold structures and manufacturing routes selected according to product geometry, material, volume and forming conditions. ### 01. Precision Injection Molds For engineering plastics, precision structural parts and appearance components, with early evaluation of parting, gating, venting, cooling, ejection and dimensional stability. INJECTION MOLD - Inserts, slides and lifters - Multi-cavity and complex parting - Trial feedback and correction ### 02. Aluminum Die-Casting Molds Engineering of filling paths, overflow and venting systems, mold thermal balance and release conditions for complex structures and stable production. ALUMINUM DIE CASTING - Runner and overflow systems - Slides and core pulling - Thermal balance and mold life ### 03. Zinc Die-Casting Molds For thin-wall precision parts and complex appearance structures, with emphasis on filling, flash, parting-surface wear and continuous-production stability. ZINC DIE CASTING - Thin-wall precision cavities - Parting and flash control - Replaceable inserts and maintenance ### 04. MIM / PM Molds and Tooling MIM injection molds, PM compaction tooling, and dedicated fixtures and gauges used for machining, inspection and assembly. MIM / PM & TOOLING - MIM and PM mold components - Machining and assembly fixtures - Positioning gauges and spare parts ## From Drawing Review to Production Handover Mold development is divided into seven verifiable stages, with defined inputs, engineering decisions and deliverables to reduce repeated corrections and production risk. ### 01. Drawing and Requirement Review Confirm 2D / 3D drawings, material, appearance, annual volume, mold life and molding-machine conditions. - Output: requirement checklist ### 02. DFM and Process Planning Evaluate parting, gating, venting, cooling, ejection, shrinkage and downstream machining datums. - Output: DFM and risk list ### 03. Mold Structure Design Design the mold base, cavities, slides, lifters, inserts, cooling circuits and maintenance structures. - Output: mold 3D data and drawings ### 04. Precision Mold Manufacturing Manufacture cores, cavities and mechanism components through CNC, EDM, wire cutting, grinding and inspection. - Output: component inspection records ### 05. Assembly and First Trial Complete fitting, assembly, motion checks and the first mold trial, recording defects and dimensional results. - Output: trial report and samples ### 06. Correction and Validation Correct dimensions, filling, venting, appearance and mechanism movement based on trial results. - Output: approved samples and records ### 07. Production Handover Finalize molding parameters, wear parts, inspection points and maintenance requirements for production. - Output: production and maintenance files ## Mold Workshop and Main Equipment A dedicated 500 m² mold workshop with 11 machines for mold-component machining and tooling production, covering precision cutting, EDM, wire cutting, correction and maintenance. ### EDM Machine Processes deep cavities, narrow slots, sharp corners and complex mold features that are difficult to cut conventionally. - Quantity: 1 ### EDM Hole Drilling Machine Produces wire-cut starting holes, small holes and deep holes for subsequent EDM and wire-cut operations. - Quantity: 1 ### Wire-Cut EDM Cuts inserts, slides, punches, plates and high-precision contours, including hardened mold materials. - Quantity: 1 ### Precision MC Machining Centers Machines cores, cavities, mold bases, inserts and mechanism components through milling, drilling and finishing. - Quantity: 3 ### Lathes / Vertical Milling Machines Machines round parts, auxiliary structures and repair components, and supports mold correction and adjustment. - Quantity: 2 lathes and 2 vertical milling machines ### Laser Cutting Machine Produces tooling base plates, sheet-metal parts, templates and auxiliary fixtures for rapid tooling preparation. - Quantity: 1 ## Design Validation and Simulation Analysis Before mold machining, filling, air-entrapment, venting, shrinkage, cooling and deformation simulations are performed according to product geometry, material, molding process and critical quality requirements. Engineering validation helps optimize gates, runners, vents, cooling circuits and mold structures in advance, reducing mold-trial corrections. Simulation items are selected according to product complexity, material behavior, molding risk and customer requirements. ### Fill-Flow Analysis Evaluates filling sequence, flow balance, pressure distribution, flow-front movement and short-shot risk. - Output: gate, runner and filling-sequence optimization ### Air-Trap Identification and Venting Identifies trapped-air locations, venting dead zones and end-of-fill regions, and checks whether venting paths are effective. - Output: vent locations, vent grooves and overflow recommendations ### Weld Lines and Gate Strategy Predicts flow-front meeting locations and evaluates weld-line risks affecting appearance, strength and critical areas. - Output: gate-location and weld-line improvement plan ### Packing and Shrinkage Analysis Evaluates packing effectiveness, volumetric shrinkage, sink-mark risk, internal stress and dimensional variation. - Output: packing conditions and dimensional compensation ### Cooling and Temperature Analysis Analyzes mold-temperature distribution, local hot spots, cooling time and temperature differences. - Output: cooling-circuit and thermal-balance optimization ### Warpage and Structural Validation Predicts warpage caused by uneven shrinkage, material orientation and cooling differences, while checking mold-structure risks. - Output: deformation compensation and mold-structure optimization ## Mold Trial Validation and Production Handover After mold assembly, initial trials, sample inspection, corrective modifications and continuous molding validation are conducted to confirm mold operation, part quality and production stability, followed by preparation of handover and maintenance documentation. - Mold trial report - Sample inspection record - Correction history - Mold drawings - Wear-parts and maintenance documents ### 01. Initial Mold Trial Confirm mold opening and closing, slides, ejection, cooling circuits, venting and basic molding conditions. - Output: initial trial record and issue list ### 02. Sample Validation Inspect appearance, critical dimensions, flash, sink marks, deformation, trapped air and demolding condition. - Output: sample inspection and approval records ### 03. Correction and Revalidation Correct dimensions, gates, vents, fitting conditions and mechanism operation according to trial results. - Output: correction history and revalidation records ### 04. Production Handover Confirm continuous molding stability and prepare mold drawings, wear parts, maintenance and servicing requirements. - Output: production-handover and mold-maintenance documents