ISO9001 & IATF 16949 Certified | Precision CNC Machining Solutions — From Prototypes to Mass Production

华航新马

HUAHANG XINMA

ISO9001:2015 / IATF16949:2016 / ISO14001:2015

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Metal Injection Molding (MIM) Services

Complex Shapes · Fine Detail · High Volume Efficiency

Huahang Xinma offers high-precision MIM manufacturing, ideal for small and complex metal components with tight tolerances and smooth finishes — tailored for industries like medical, automotive, electronics, and aerospace.

What is Metal Injection Molding (MIM) ?

Metal Injection Molding (MIM) is a manufacturing process that combines the design flexibility of plastic injection molding with the strength and integrity of metal. It is ideal for producing small, intricate, high-strength parts with excellent repeatability—especially in high volumes.

MIM Technology Advantages:

One-piece forming of complex geometries

High-volume production with dimensional consistency

Material efficiency close to zero-waste

Excellent surface finish & post-processing compatibility

In-house process control ensures delivery & quality

Wide material compatibility for various industries

Why Choose Huahang Xinma for MIM?

Precision Tooling
In-house mold design and fast prototyping

High-Quality Output
Uniform density, high strength, fine surface finish

Engineering Support
DFM feedback and material selection guidance

Strict Quality Control
IATF 16949 & ISO 9001 certified processes

Global Partnerships
Trusted by clients in 50+ countries worldwide

Metal Injection Molding (MIM) Process Overview

*All steps are carried out in-house for complete control over quality and lead time.*

Huahang Xinma manages the entire MIM production in-house, ensuring tight control over quality and consistency. Here’s how we transform raw metal powders into precision-engineered parts:

Feedstock Preparation & Pelletizing

Metal powder + Thermoplastic binder → Uniform feedstock

We mix fine metal powders with thermoplastic binders to form a homogeneous mixture. This mixture is granulated into small pellets, typically a few millimeters in diameter, ready for injection molding.

Injection Molding

Pellets → Molded green parts

The feedstock is heated and injected into precision molds using high-pressure screws. Once cooled, the molded parts—called “green parts”—are ejected from the mold.

Debinding (Binder Removal)

Green parts → Brown parts

The green parts undergo debinding to remove most of the binder. This is done using thermal or solvent-based methods, leaving behind fragile “brown parts” composed of mostly metal.

Sintering

Brown parts → Fully dense metal parts

The debound parts are placed in a high-temperature furnace where sintering densifies the metal. The final parts achieve up to 98% of the density of wrought metal, with excellent mechanical and surface properties.

Optional: Secondary Operations

Post-processing as needed

Depending on application, parts may undergo further CNC machining, polishing, heat treatment, or surface coating to meet exact specifications.

Final Inspection & Packaging

Each part is thoroughly inspected for both dimensions and appearance before being carefully packaged for delivery.

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Materials

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Stainless Steel (316L, 304L, 17-4PH)

Tool Steels (M2, D2)

Titanium Alloys

Soft Magnetic Alloys

Low-Alloy Steels

Custom alloys available upon request

Industry Applications

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Image of precision-machined metal parts used in automotive and electric vehicle applications, such as gearbox housings, drive shafts, and EV battery enclosures.

Precision-machined robot joints, enclosures, and structural parts for industrial and service robots.

| Medical Devices | Orthodontic brackets, surgical tools, endoscope components |

| Consumer Electronics | SIM card trays, hinges, EMI shields |

| Automotive | Turbocharger vanes, sensor housings, locking systems |

| Defense & Aerospace | Miniature structural parts, guide sleeves |

MIM Part Design Wizard

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Complex 3D Geometries

Examples: blind holes, internal threads, internal gears, cross/angled holes

Thin-Walled Structures

Recommended wall thickness: 0.5–6.0 mm with good uniformity

Fine Details Without Post-Machining

Capable of forming features like logo engraving, precision steps, snap-fits

Min Wall Thickness

≥ 0.4 mm, recommended ≥ 0.8 mm

Max Wall Thickness

≤ 10 mm, to avoid incomplete debinding/sintering

Minimum Hole Diameter

≥ 0.3 mm (can be improved with laser/secondary machining)

Maximum Size

Typically ≤ 100 mm, depends on mold design & debinding capacity

Dimensional Tolerance

±0.03 ~ ±0.05 mm (depending on geometry complexity)

Ensure proper parting lines to minimize side actions and complex sliders

Add draft angles (recommended 0.5°–2°) for easier demolding

Avoid sharp corners and edges; use fillets for smoother transitions

Leverage MIM to consolidate multiple parts into a single component

Consult Huahang’s engineering team early for DFM (Design for Manufacturability) support

Integrated shafts, sliders, and gear components

Complex connectors with embedded inserts

Miniature medical device components

High-volume 3C (computer, communication, consumer electronics) hardware parts

Free DFM analysis and optimization

Rapid prototyping in 7–14 days

Material selection and performance consulting

Post-processing consulting (heat treatment, plating, CNC)

Quality Assurance

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All MIM parts undergo comprehensive quality checks including dimensional inspection, density verification, and mechanical testing. We provide PPAP documentation and material certificates as needed.

Certifications: ISO 9001:2015 / IATF 16949:2016

FAQ

Q: What files do you accept?

A: STEP (.stp), STL, IGES, PDF

Q: Can you do surface finishing for prototypes?

A: Yes, we offer anodizing, polishing, sandblasting, and more.

Q: How do you ensure IP protection?

A: All data is handled confidentially with NDAs available on request.

Let’s Talk About Your Project

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Ready to manufacture MIM parts that are lightweight, strong, and complex?
We help you from concept to production — including material guidance, mold development, and mass production.

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