ZheJiang HengJi YongXin New Materials Co., LTD
CNC Machining Services

CNC Machining Services

Our machining process for powder metallurgy (PM) components focuses on precision and material adaptability. We utilize CNC turning, milling and grinding centers to refine sintered PM parts, ensuring tight tolerances (down to ±0.005mm) for critical dimensions like gear teeth and bearing bores. For high-wear PM parts, we apply precision hard turning after heat treatment, avoiding grinding burns and maintaining surface roughness (Ra ≤ 0.8μm). We also use EDM for complex cavities or thin-walled structures, preventing material deformation common in traditional machining. Each machining step is paired with in-process inspection via coordinate measuring machines (CMM), guaranteeing PM components meet automotive, industrial and aerospace application requirements for durability and performance.

Computer-Aided Engineering Process

Machining is a subtractive manufacturing process that creates precise parts by removing material from a workpiece. A typical workflow begins with securing the workpiece in a fixture. Then, CNC-controlled operations like milling, turning, or drilling are performed based on digital designs. This sequence ensures parts meet strict dimensional tolerances and surface finish requirements, making it essential for final part finishing.


Roughing is the initial machining stage. It focuses on rapidly removing large amounts of material using aggressive parameters, prioritizing speed over finish. This step creates a shape close to the final dimensions, leaving a small excess stock for subsequent finishing operations.


Computer-Aided Engineering Process

Advantages of CNC Machining Services

  • Unmatched Precision and Tolerance
    Unmatched Precision and Tolerance

    Machining achieves extremely tight dimensional tolerances and superior surface finishes, which are often unattainable through net-shape processes alone. This is critical for high-performance applications.

  • Design Flexibility and Complexity
    Design Flexibility and Complexity

    It allows for the creation of complex features, such as deep internal holes, sharp corners, undercuts, and very fine details, that are impossible to mold or form in a die.

  • Superior Surface Finish
    Superior Surface Finish

    Machining processes can produce exceptionally smooth surface finishes, reducing friction, improving fatigue life, and enhancing the performance of sealing surfaces.


Applications of CNC Machining Services

CNC machining services are widely used across industries for producing high-precision metal and plastic components.

  • Automotive Industry
    Automotive Industry

    In the automotive industry, it manufactures engine parts, brake components, and transmission parts. 

  • Electronics
    Electronics

    In electronics, it creates precision housings, heat sinks, and connector parts.

  • Medical Devices
    Medical Devices

    In medical devices, it produces surgical instruments and implant components.

  • Aerospace and General Machinery
    Aerospace and General Machinery

    It also serves aerospace and general machinery with custom, high-tolerance parts that ensure stability and reliability.

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