Production Process

Die Casting Production Process

HUACHUAN Die Casting (Dujiangyan Huachuan Die Casting Co., Ltd.) completes every stage of a die casting, from tool design to inspection and shipping, in its Chengdu plant. Our service model is one-stop: tool design — die casting — CNC machining — surface finishing — inspection and shipping, keeping quality and lead times under control.

Six production stages

01

Tool Design

We design the die casting tool from the customer's part drawings and requirements, evaluating the parting line, gating system, cooling system and ejection structure as the basis for the following production.

  • Review of parting line, draft angle and gating system
  • Flow analysis to check air entrapment and shrinkage porosity risk
HUACHUAN Die Casting tool design drawing
02

Die Casting

Die casting machines inject molten aluminum alloy and zinc alloy into the die cavity under high pressure, forming the raw casting, with process parameters strictly controlled to safeguard product quality.

  • Shot speed, specific pressure and die temperature parameters fixed
  • First-article approval and traceable batch retention samples
HUACHUAN Die Casting foundry production photo
03

CNC Machining

Raw castings go through precision CNC machining to remove excess material and secure key dimensional accuracy and surface quality to drawing tolerances.

  • First-piece check on key dimensions + CMM spot checks
  • Fixture and tool-life checks included in routine inspection
HUACHUAN Die Casting CNC machining photo
04

Surface Finishing

Sandblasting, polishing, spray coating and electroplating are applied per product requirements to improve appearance and corrosion and wear resistance.

  • Pre-treatment and coating thickness spot-checked per batch
  • Color difference, adhesion and salt spray verified as needed
HUACHUAN Die Casting surface finishing workshop photo
05

Quality Inspection

Finished parts are inspected for dimensions, appearance and performance under the ISO 9001:2015 quality management system and IATF 16949 requirements, so that only qualified parts are shipped.

  • Three-stage inspection: dimensions, appearance and performance
  • Leak-tightness and assembly validation to customer standards
HUACHUAN Die Casting quality inspection photo
06

Packing and Shipping

Qualified parts are packed to customer requirements and shipped, using Chengdu's transport and logistics network to reach customers in the Chengdu-Chongqing area and across China efficiently.

  • Anti-scuff dividers and moisture-proof packing
  • Dispatched with customer labels and agreed logistics
HUACHUAN Die Casting product packing and shipping photo

From drawing to mass production, confirm the process fits first

High-volume production, small-batch customization and new-part prototyping can all be scheduled. Send us the part structure and annual volume, and we will assess the process route and lead time.