die casting mold manufacturing ensures precision tooling

Die casting molds perform the critical functions of injecting molten metal, forming, gating systems, and cooling circuits, directly determining the dimensional accuracy, surface quality, thermal cycle life, and production efficiency of die-cast parts. We provide a one-stop service from mold design evaluation, material selection, mold manufacturing, trial mold verification to mass production support, suitable for mold requirements for die-casting alloys such as aluminum, zinc, and magnesium.

Main materials and specifications:

1. Common mold steels: H13, NAK80, P20, S136, stainless steel.
2. Surface treatments and strengthening: nitriding, carburizing, PVD vapor deposition, hard chrome, electrochemical polishing, etc., to improve wear resistance, anti-adhesion, and corrosion resistance.
3. Dimensions and cavity count: single-cavity and multi-cavity molds can be manufactured, supporting complex cavities, detachable mold designs, and multi-cavity arrangements.
4. Cooling systems: molds can be designed with optimized cooling circuits, including straight bores, heat exchangers, or built-in coolers, to control mold temperature and shorten cycle times.

Processing and manufacturing procedures:

1. CNC machining: Use 5-axis or multi-axis CNC machines for roughing and finishing to ensure cavity geometric accuracy and surface datums.
2. Wire cutting / EDM / WEDM: Used for complex cavities, fine features, and precision machining of high-hardness materials and mold opening operations.
3. Fine grinding and polishing: Achieve required surface finish and appearance by mirror polishing or specified texture treatments.
4. Heat treatment: Perform quenching, tempering, or quench-and-temper treatments according to material and usage requirements to increase hardness and fatigue strength while controlling distortion.
5. Surface strengthening: When necessary, perform nitriding, carburizing, or coating treatments to enhance mold wear resistance and anti-adhesion.
6. Assembly and commissioning: Install cooling channels, locating pins, ejector systems, and sliders; complete mold assembly and perform clearance and motion tests.

Trial molding and optimization:

1. Trial mold verification: Conduct first-piece die casting during the trial phase, inspect product dimensions, wall thickness consistency, filling and cooling performance, and record mold operating data.
2. Defect feedback and correction: Based on product defects such as flash, shrinkage porosity, burn marks, or reduced tool life, iteratively modify the gating system, venting, or cooling and perform localized machining repairs.
3. Confirm production parameters: Finalize injection pressure, holding pressure, solidification/setting time, mold temperature, and demolding conditions to ensure stable mass production.

Applicable industries and typical applications:

1. Automotive components.
2. Home appliance housings and functional parts.
3. Industrial equipment and mechanical components.
4. Consumer electronics and connectors.
5. Aerospace and special-alloy die-cast parts.