Manufacturer of 40Cr & SKD61 Ejector Pins with High Quality

The detail information of product

VINACNC - Expert in High-Precision 40Cr and SKD61 Ejector Pins

In the mould industry, the ejector pin is a core component that determines the precision and efficiency of the part ejection process. VINACNC is proud to supply 40Cr and SKD61 ejector pins with high hardness and tight tolerances, ensuring superior performance and durability even under harsh production conditions.

Technical Specifications, Materials, and Applications

Material: The products are crafted from high-quality tool steels:
- 40Cr Steel: A high-quality alloy steel with good strength and hardness after heat treatment.
- SKD61 Steel (JIS): A widely used tool steel known for its hardness, strength, and good heat resistance, suitable for plastic injection and die-casting moulds.
Technical Properties:
- Hardness: After heat treatment, the material achieves a stable hardness (typically around HRC 45° for 40Cr and HRC 48-54° for SKD61), allowing the ejector pins to withstand high pressure and friction during continuous operation.
- Precision: The products are machined with extremely tight diameter tolerances, ensuring a perfect fit with the mold, preventing plastic leakage, and guaranteeing the accuracy of the final product.
- Surface Finish: The surface is specially treated to achieve high smoothness, which reduces friction, ensures a seamless ejection process, and extends the lifespan of the pins.
Applications: 40Cr and SKD61 ejector pins are indispensable components in plastic injection molds and die-casting molds for complex, high-durability parts such as automotive components, electronic device housings, and industrial products.

Product Advantages

Superior Durability: By using high-quality steel and advanced heat treatment processes, our ejector pins can withstand repetitive force and pressure during production, 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 plastic leakage and product defects.
Optimized Performance: The smooth operation helps to reduce the molding cycle time and enhances overall production efficiency.
High Wear Resistance: The ultra-precise surface finish gives the components high wear resistance, allowing them to withstand millions of production cycles.

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) or other high-precision measuring instruments to check the diameter, length, and concentricity.
Surface Inspection: We use a surface roughness tester and visual inspection to ensure there are no cracks, scratches, or other defects.
Functionality 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 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 the product code, weight, dimensions, and handling instructions.
Storage Instructions: We recommend storing the products in a dry, cool environment, away from high humidity and corrosive chemicals.