VINACNC: Expert in Lapping Ejector Punches | High Punches Standards for Moulds

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VINACNC - Expert in High-Precision Standard Lapping Ejector Punches

In the mould and stamping industry, the punch pin (punch) is a core component that determines the precision and efficiency of the production process. VINACNC is proud to supply standard lapping ejector punches with high hardness and tight tolerances, designed to ensure superior performance and durability even under harsh production conditions. This product is one of our hot-selling solutions, trusted by many clients.

Technical Specifications, Materials, and Applications

Materials: The products are crafted from high-quality tool steels such as SKD-11, M2, and HSS. These materials are known for their high hardness, wear resistance, and good toughness after heat treatment.
Technical Properties:
- Lapping Finish: The punch pins are meticulously machined with a lapping process to achieve an extremely high surface smoothness, which reduces friction and extends the lifespan of the punch pin.
- Standard Compliance: Products comply with international standards, ensuring compatibility and high quality.
- Hardness: After heat treatment, the material achieves a stable hardness (typically HRC 58-62°), allowing the punch pin to withstand high pressure and friction during continuous operation.
- Precision: Products are CNC machined with extremely tight diameter tolerances, ensuring a perfect fit with the mould and helping to create parts with precise dimensions.
Applications: Our components are indispensable parts of stamping die sets for cutting and punching holes in sheet metal or plastic parts. They are widely used in the manufacturing of automotive parts, electronic device housings, and precision machinery.

Product Advantages

Superior Durability: With high-quality steel materials, the punch pins resist repetitive force and pressure during production, significantly extending the mould's lifespan.
Absolute Precision: Dimensions are strictly controlled down to the micrometre level, ensuring the components operate in perfect conjunction, minimizing the risk of product defects.
Optimized Performance: The smooth, lapped surface helps to reduce the stamping cycle time and enhances overall production efficiency.
Competitive Pricing: Thanks to our optimized and efficient production process, we can offer products at a very competitive price.

Post-Machining Product Inspection Process

Hardness Test: We use a professional hardness tester to verify the hardness of the heat-treated material, ensuring it meets technical specifications.
Dimensional and Tolerance Check: We use a Coordinate Measuring Machine (CMM) to verify all critical dimensions and tolerances against the technical drawings.
Surface Inspection: We use a surface roughness tester and visual inspection to ensure there are no cracks, scratches, or other defects.
Functional Test: The components are test-fitted with related parts to ensure a perfect fit and smooth operation.

Packaging and Storage Process

Cleaning and Rust Prevention: The punch pins are cleaned and coated with a specialized anti-rust oil to protect their precision surfaces.
Secure Packaging: Products are carefully packed in rigid plastic boxes or cardboard crates with foam to prevent damage during transport.
Information Labeling: The packaging is clearly labeled with product information, including the product code, dimensions, and handling instructions.
Storage Instructions: We recommend storing the products in a dry, cool environment, away from high humidity and corrosive chemicals.