3D Printing Overview

Compared with Metal Injection Molding (MIM), the key distinction of sinter-based 3D printing lies in moldless manufacturing. At Precision Tech, we employ layer-by-layer deposition of heated powder followed by debinding and sintering - analogous to MIM processes - to achieve enhanced design flexibility and production efficiency for complex metal components.

3D printing

Metal powder is selectively fused by laser beam layer-by-layer, building the product through controlled localized melting.

Debinding

Depending on binder systems, debinding methods include catalytic, thermal, or solvent processes. This removes binders while retaining 2-3% residual content (plasticizers) to maintain structural integrity of "brown parts" during handling.

Sintering

Components undergo final sintering at 1200-1400°C (material-dependent), achieving:

· Complete binder removal

· Isotropic shrinkage to target dimensions

· 97% theoretical density
Resulting sintered parts exhibit mechanical properties comparable to machined components.

Post-Processing

Like conventional metal parts, MIM components can undergo:

Heat treatment

Precision machining (critical dimension tolerance control)
Precision Tech provides comprehensive post-processing including hardening, CNC finishing, surface plating, and full assembly integration.