After die casting, parts typically require a range of post-processing operations to meet final delivery specifications. We offer comprehensive post-processing and secondary services – including de burring, surface finishing, tapping/drilling, and heat treatment – ensuring that every casting meets customer requirements for function, appearance, and assembly performance.
What is Post-Processing？
Post-processing refers to all auxiliary operations required after a casting is ejected from the die casting machine, before it becomes a deliverable finished part. These operations directly impact the final quality, appearance, assembly precision, and service life of the product.
Our Post-Processing Services
I. De burring & Surface Preparation
- Manual deburring (precision treatment for complex areas)
- Vibratory tumbling (batch removal of burrs and sharp edges)
- Sandblasting (surface roughness improvement, uniform matte finish)
- Shot blasting (oxide layer removal, surface strengthening)
- Barrel tumbling (ideal for high-volume small parts)
II. Machining (see CNC Machining page)
- Drilling, tapping, reaming
- Milling, turning
- Deep hole drilling
III. Surface Finishing (see Surface Finishing page)
- Anodizing (clear/dyed/hard coat)
- Powder coating (various colors and textures)
- Liquid painting (gloss/matte)
- Electroplating (zinc, nickel, chrome, etc.)
- Chemical conversion coatings (passivation, phosphating)
IV. Heat Treatment
- Stress-relief annealing (eliminates internal stress, stabilizes dimensions)
- T5/T6 solution and aging treatment (enhances mechanical properties)
- Process optimization tailored to different materials
V. Assembly & Packaging
- Parts cleaning (ultrasonic cleaning)
- Assembly (threaded insert installation, seal ring assembly, etc.)
- Functional testing (leak testing, dimensional inspection)
- Professional packaging (rust protection + custom packaging solutions)
Why Choose Our One-Stop Post-Processing Services？
- Reduced supplier management – Casting and post-processing completed in one facility – no need to manage multiple vendors
- Lower quality risk – In-house process control with clear accountability and full traceability
- Shorter total lead time – Eliminates logistics and external coordination delays
- Expert process guidance – Engineering team provides post-processing recommendations during design phase to avoid downstream issues
- Flexible capability – From simple deburring to complex surface finishing, tailored to your needs
Typical Applications：
- Cosmetic parts (anodizing/painting requirements)
- Assembly parts (tapping, reaming, sealing surface machining)
- Functional parts (heat treatment for strength enhancement)
- Cleanliness-critical parts (ultrasonic cleaning)
- Precision mating parts (dimensional finishing)
Contact us to learn more about our post-processing services.
